Summary Post on Technical Exchanges (XI) – Liquefied Gas (Updated on 3/31/2009, new content added on Floor 7)
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I have compiled all the posts related to liquefied gas technology on this forum, in order to make it easier for everyone to search, save time, find what they need, and assist others in resolving their problems! Floor 1: 1–100 Floor 2: 101–200 Floor 3: 201–300 Floor 4: 301–339 (Click the title directly to access the hyperlink) 1. Liquefied gas calculation formula 2. What factors affect the saturated vapor pressure of liquefied gas? 3. What’s the reason behind the recent ban in China on adding dimethyl ether to liquefied gas? 4. Coker liquefied gas suffers from a high level of coke powder inclusion. 5. Safety technical requirements for liquefied gas cylinder filling stations – GB17265. 6. With the economic downturn and poor sales of liquefied gas, how can its processing improve its economic value? 7. What should be the oxygen flow rate for the desulfurization of gasoline and liquefied gas? 8. Issues with the catalytic liquefied gas hydrogen sulfide removal tower? 9. Liquefied gas aromatization 10. Use of liquefied gas as a substitute for acetylene gas 11. Composition of the coke produced in reactions to produce olefins from liquefied gas 12. How are environmental factors taken into account in the design of liquefied gas storage equipment? (Replies awarded) 13. Factors causing unsatisfactory sulfur content in liquefied gas. 14. How should operations be adjusted when implementing plans to produce more gasoline, more diesel, or more liquefied gas? 15. I have a question regarding the desulfurization of liquefied gas; I would appreciate some guidance from experts. 16. Is the aromatization of light hydrocarbons in liquefied gas beneficial, and what are its prospects? 17. Differences between field liquefied gas and refinery liquefied gas. 18. Is insulation required for field liquefied gas pipelines? 19. What is the best process for desulfurization and alcohol removal in LPG refining? The corrosion test results for liquefied gas at our factory are always unsatisfactory! 20. Purpose of installing emergency shut-off valves on the inlet and outlet pipelines of liquefied gas cylinders. 21. Railway liquefied gas tank cars. 22. Liquefied gas stations. 23! China’s largest LNG carrier was launched! ! 24. Request for assistance: Technology for producing high-octane gasoline from liquefied gas. 25. Analysis of the causes of copper sheet corrosion in gasoline and liquefied gas, along with solutions. 26. Low pressure at the top of the stabilizer – why can’t the pressure drop in the liquefied gas outlet be reduced? 27. Liquefied gas pumps. 28. Analysis of the reasons for unsatisfactory copper sheet corrosion in liquefied gas, along with corrective measures. 29. Discussion on issues related to unsatisfactory copper sheet corrosion in liquefied gas. 30. Liquefied gas deep desulfurization process and copper sheet corrosion testing. 31. How to calculate the costs associated with converting a liquefied gas pump into a diesel pump. 32. Plans for unloading liquefied gas. 33. Issues related to storing liquefied gas in oil depots. 34. The impact of low temperatures at the top of the tower on liquefied gas production. 35. Reasons for vacuum conditions in liquefied gas pumps and how to address them. 36. Iron oxide desulfurizing agents used in liquefied gas adsorption tanks. 37. Unsatisfactory corrosion resistance of liquefied gas in catalytic cracking units – what are good refining methods? 38. GB 14193-1993 Regulations for Filling Liquefied Gas Cylinders 39. Operating Procedures for Liquefied Gas Storage Areas 40. With the inability to export liquefied gas resources from Xinjiang, a decline in prices is inevitable 41. Safety Inspection Regulations for Liquefied Gas Transport Trucks 42. Petroleum Liquefied Gas and Gas 43. Liquefied gas, oil, stabilizer tower top reflux tank 44. Selection of Liquefied Gas Heaters 45. Regeneration of Alkaline Solutions Used in Liquefied Gas Desulfurization 46. Those working with gasoline and liquefied gas desulfurization systems, please read this 47. Production of Olefins from Liquefied Gas 48. Converting Heating Furnaces to Use Liquefied Gas 49. Is it necessary to insulate liquefied gas in process pipelines? 50. The inspection of liquefied gas storage tanks includes an external inspection of the tanks. 51. The structure of large-scale liquefied gas cryogenic storage tanks and their insulation design. 52. Level measurement in liquefied gas tanks. 53. Who can provide the formula for calculating the volume of liquefied gas tanks? 54. Recent developments in deep desulfurization technologies for liquefied gas. 55. The distribution of ethanolamine in gaseous liquefied gas. 56. Knowledge about pressure relief valves on liquefied gas cylinders. 57. What causes the yellowing of catalytic liquefied gas? 58. Determining the degree of cracking based on the components of liquefied gas. 59. Where to find drawings for liquefied gas tank trucks. 60. Does liquefied gas have an expiration date? 61. Issues related to the C5 content in catalytic liquefied gas. 62. Desulfurization and denaturation processes for coker-generated liquefied gas. 63. Problems associated with measuring liquefied gas. 64. What methods are used to reduce liquefied gas levels and increase the yield of gasoline and diesel? 65. When there is an excess of liquefied gas – the cost is less than 3,000 yuan – how should this be handled from a process perspective? 66. Liquefied gas transfer pipes. 67. Information on units for producing propylene from liquefied gas and their process flow diagrams. 68. Is it necessary to modify liquefied gas desulfurization and denaturation units? 69. HG/T 2475-1993 | Detailed rules for quality grading of railway tank cars carrying liquefied gases. 70. Some basic knowledge about liquefied gas. 71. Can hoses be used for loading and unloading liquid chlorine, liquid ammonia, and liquefied gas? 72. Severe water contamination in liquefied gas after desulfurization and denaturation. 73. Information on synthetic liquefied gas technology 74. Materials promoting synthetic liquefied gas as a scam – be cautious to avoid being deceived. 75. Which is better: liquefied gas made purely from dimethyl ether or one made from methanol and dimethyl ether? 76. Sharp drops in the prices of propylene and liquefied gas. 77. Inspections of liquefied gas storage tanks include an external inspection of the tanks. 78. Determination of process parameters for removing hydrogen sulfide from liquefied gas. 79. Determination of the filling factor for low-pressure liquefied gases. 80. Analysis of the liquefied gas market in the northwest region as of November 5th. 81. Process flow diagram for liquefied gas. 82. Prices of liquefied gas remain low during peak demand periods. 83. Seeking help with heating liquefied gas using Texaco’s gasification furnace. 84. Safety assessment report for liquefied gas stations. 85. Sample assessment report for petroleum liquefied gas stations. 86. Continued decline in liquefied gas prices in October. 87. Why does ice form on liquefied gas pipelines? 88. GB17379-1998: General rules for port storage of bulk petroleum and liquefied gas products. 89. Evaluation of liquefied gas desulfurization agents. 90. Liquefied gas desulfurization technologies. 91. Density of liquefied gas. 92. What considerations are necessary when transporting liquefied gas? 93. What are the safety regulations for LPG sampling and acidic gas sampling? 94. Composition of liquefied gas. 95. Does anyone have information on liquefied gas vaporization units as well as maintenance guidelines for them? 96. What is the typical sulfur content in liquefied gas that enters the double distillation process? Thank you. 97. Safety operating procedures for loading liquefied gas. 98. Information and basic maintenance guidelines for petroleum liquefied gas vaporization units. 99. What extent of analysis is required for safety assessment reports in machinery factories, regarding sewage treatment and liquefied gas stations? 100. How high can the levels of propylene and isobutylene be in FCC liquefied gas? This post was last edited by chengkang on 2009-4-2 18:31]
Continued: 101. Safety requirements for the operation of liquefied gas vessels. 102. Safety guidelines for the transfer of liquefied gas aboard vessels. 103. Converting liquefied gas desulfurization and hydrodenitration units into desulfurization units. 104. Calculation methods for venturi mixers used in the alkaline washing of liquefied gas. 105. Fire protection plans for small liquefied gas stations. 106. What are some effective technologies for liquefied gas desulfurization? 107. Desulfurization of dry gas liquefied gas. 108. Issues related to the desulfurization and hydrodenitration of coking plant-derived liquefied gas. 109. Are there any online analyzers available for detecting liquefied gas corrosion? 110. Liquefied gas in atmospheric and vacuum distillation units. 111. Why is the temperature high after liquefied gas is cooled, and why is there a large amount of non-condensable gas? 112. Can gasoline and liquefied gas be loaded together? 113. Cavitation in liquefied gas hydrocarbon pumps. 114. Dimensions of a 3,000-cubic-foot liquefied gas tank. 115. Alcohol-based fuels as a new energy source: 40% cheaper than liquefied gas. 116. How can liquefied gas processing facilities be made safer? 117. Insulation and pressure relief design for enclosed liquefied gas pipelines. 118. Pressure vessels and industrial pipelines – liquefied gas tank trucks. 119. What is the combustion temperature of liquefied gas? 120. Regarding the filling of liquefied gas tankers, I would appreciate some guidance from experts. 121. Discussion on the conversion technology between natural gas and pipeline liquefied gas. 122. Issues related to the vapor pressure of liquefied gas and gasoline~~~~123. Is the liquefied gas coming out of the top of the stabilizer in gaseous or liquid form? Or is it both? 124. General Report on the Development of 280M3 Liquefied Gas Special Vessels 125. Techniques for Plugging Leaks in Liquefied Gas Systems 126. How to Choose a Flow Meter for Low-Flow Liquefied Gas? 127. Issues related to the use of fiber membrane desulfurization units for treating coking liquefied gas. 128. Levels of hydrogen sulfide and thiols in the liquefied gas produced by crude oil distillation units. 129. What are the methods for removing sulfur from liquefied gas? 130. Control of C5 content in liquefied gas 131. Safety questions and answers regarding railway tank cars for liquefied gases---053 132. Safe use and maintenance of road tank cars for liquefied gases----052 133. Technology for separating propylene from liquefied gas 134. Safety technical requirements for liquefied gas cylinder filling stations 135. Hazard analysis of liquefied gas storage tanks at low temperature and normal pressure, as well as prediction of the impacts of sudden tank ruptures 136. Purpose of installing emergency shut-off valves on the inlet and outlet pipelines of liquefied gas spheres 137. Engineering design review for liquefied gas systems 138. Removal of trace amounts of oil from liquefied gas obtained through industrial exhaust gas recovery 139. Request for guidance on how to determine the saturated vapor pressure of liquefied gas 140. Regulations for the management of liquefied gas and propylene storage tanks! Urgent!!! ! ! ! ! 141. Liquefied gas processing route 142. Diagram of large liquefied gas storage tanks 143. Water cooling for liquefied gas 144. General layout of new liquefied gas stations 145. Operational issues related to the regenerator tower in the wet desulfurization process using diethanolamine for liquefied gas 146. How does static electricity arise during dehydration of liquefied gas tanks? 147. Materials for desulfurization equipment in dry gas and liquefied gas. 148. Liquefied gas desulfurization technologies. 149. Design of liquefied gas pipelines. 150. A question regarding liquefied gas. 151. Commissioning plan and operating procedures for the company’s 200,000-ton liquefied gas separation unit. 152. What type of valves are suitable for use in liquefied gas storage tank areas? 153. Market forecasts for some chemical products in August – liquefied gas, fuel oil 154. Market forecasts for some chemical products in August – fuel oil, liquefied gas 155. What situations can cause an interruption in the reflux of liquefied gas from the stabilizer tower? 156. Can magnetic pumps be used to transport liquefied gas? 157. Construction considerations for liquefied gas pipelines in tank farms 158. Quality analysis of liquefied gas 159. Regular inspection of liquid-phase flexible hoses used for filling liquefied gas tankers 160. Is heat tracing required for gasoline and liquefied gas in northern regions? 161. Raising the temperature of liquefied gas upon starting up a catalytic unit. 162. Domestic manufacturers of liquefied gas for civilian use and their production capacities (prize for replies). 163. Who has detailed information on the properties of gasoline and liquefied gas? 164. Regarding the transportation of liquefied gases. 165. Seeking advice on detecting the leakage flow rate from low-temperature liquefied gas tanks. 166. How to deal with high C5 content in liquefied gas? 167. Utilization of liquefied gas from delayed coking processes? 168. Questions regarding the ball valves used for loading liquefied gas. 169. Composition of liquefied gas. 170. Prospects for downstream development projects related to liquefied gas. 171. How is the flow rate of the DEA solution in the dry gas, liquefied gas, and medium-pressure gas desulfurization towers determined in desulfurization units? 172. Is the control room in the liquefied gas tank farm considered a zone with explosion hazards? 173. Issues related to the loading of liquefied gas. 174. Level correction for the level gauge on the side pipe of liquefied gas cylinders. 175. Preventing freezing of the level gauge used in liquefied gas cylinders. 176. How to handle the heat-stable salts contained in high-efficiency desulfurizing agents for liquefied gas? What are the hazards? 177. Please share your experiences with liquefied gas leaks. 178. Question: Why is the design pressure for liquefied gas storage tanks set at 1.77 MPa? 179. When selecting level gauges for liquefied gas storage tanks, which brands offer good products? 180. Safety valves for LPG tanks used by individual business owners 181. Losses that occur during loading and unloading of LPG tankers 182. Design and manufacturing requirements for LPG cylinders 183. Is it necessary to ensure a safe flow rate of 3 m/s for LPG (liquid)? 184. Seek information on crude oil transfer pumps, refined oil pumps, and liquefied gas pumps, along with details of the manufacturers. 185. The Guangzhou Quality Supervision Bureau is investigating the mixing of dimethyl ether in liquefied gas; market reactions vary. 186. What are the standards for determining the safe capacity of liquefied gas tankers? 187. What are the approaches for liquefied gas and the deep processing of aromatics? We are preparing to conduct an inspection of Unit 188. May I ask what method is used for liquefied gas cooling in your catalytic cracking unit? 189. Questions regarding the desulfurization system for dry gas and liquefied gas. 190. Methods to increase the unloading speed of liquefied gas tankers. 191. Discussion on the desulfurization of dry gas and liquefied gas. 192. Can a bellows-type safety valve (discharge temperature: -15°C) be used for liquefied gas? 193. Drawings of liquefied petroleum gas storage tanks 194. Application of liquefied gas desulfurization technology – alkali washing and water washing – improvements 195. Vacuum-insulated cryogenic liquefied gas storage tanks and their inspection 196. What are the standards for removing residual liquid from liquefied gas cylinders? 197. Introduction to desulfurization of liquefied gas. 198. Refrigeration units in Dalian, annual inspections of liquefiers (which are inspections for category III containers); what to do with R22 in liquefied gas? 199. Safe nitrogen displacement methods for liquefied gas storage tanks. 200. Can liquefied gas be used as a substitute for acetylene?
Continued: 201. Request for operating procedures for desulfurization and hydrodesulfurization of dry gas and liquefied gas. 202. Frost and condensation prevention for liquefied gas storage tanks in winter. 203. Is it possible to start up absorption stabilization processes without using gas or liquefied gas? 204. Liquefied gas transportation – factors related to the fluid itself. 205. Crystalline water in liquefied gas. 206. Safety hazards associated with the hoses used for loading and unloading liquefied gas from tankers. 207. Loading and unloading of liquefied gas. 208. Basic knowledge about liquefied gas. 209. Desulfurization and hydrodesulfurization of liquefied gas. 210. Design and application of high-toughness 16MnR (WH510) steel for liquefied gas storage tanks. 211. Can the oily wastewater from liquefied gas water separation units be discharged into an open oily wastewater system? 212. Industrial application research on the triphenyl production process via liquefied gas aromatization. 213. Drawings of the secondary water separation tanks for liquefied gas storage tanks. 214. Tables of design parameters, calculation documents, and animated demonstrations related to petroleum liquefied gas storage tanks. 215. Desulfurization of liquefied gas 216. Seeking a desulfurizing agent for the desulfurization and alkylation of liquefied gas 217. Flowcharts for the desulfurization of dry gas and liquefied gas 218. How is the control level for liquefied gas storage tanks determined? 219. How is the liquid level control for liquefied gas tanks determined? 220. Installation of emergency shut-off valves on liquefied gas cylinders 221. The problem of coke powder in liquefied gas 222. Why is the pressure rating for liquefied gas pipelines in the storage and transportation department 2.0 MPa, while it is 2.5 MPa for pipelines in the process department? 223. Color codes for liquefied gas storage tanks 224. Liquefied gas tanks supplying feed pumps to petrochemical plants 225. Who has a complete set of documents related to the monitoring of liquefied gas storage tanks? 226. Emergency shut-off valves for liquefied gas cylinders 227. Parameters of the bottom water injection pump for liquefied gas cylinders 228. Issues related to water injection into liquefied gas storage tanks 229. Process for removing water from liquefied gas 230. Composition of coking unit liquefied gas 231. Why is the pore size in the liquefied gas desulfurization tower (MDEA extraction sieve tray tower) only 1%? 232. Urgent: Does anyone have information on the process related to liquefied gas cylinders for reference? 233、One of the highlights of China’s 147,000 cubic meter LNG tankers! ! 234. Procedures and operation cards for oil products (liquefied gas). 235. Advantages of dimethyl ether (DME) over liquefied petroleum gas (LPG). 236. What type of level gauge should be used in newly built liquefied gas storage tanks? 237. Is it necessary to use nitrogen for loading liquefied gas onto trains? Investigate whether it is required 238. Liquefied gas separation: Temperature-composition-pressure relationship of propane-propylene. 239. Excessive carbon pentane content in liquefied gas produced by heavy catalytic reforming. 240. Why are the vapor valves on liquefied gas tank trucks DN25 in size? Can it be increased to DN50? 241. Design issues related to underground liquefied gas storage tanks (urgent)! ! 242. Are there any other uses for the disulfides obtained after the deodorization of liquefied gas at present? ? ? 243. How to consider the pumping water pumps for liquefied gas cylinders? 244. How to measure underground liquefied gas storage tanks? 245. Must a liquidation balloon tank be equipped with a water injection pump? 246. How to design underground liquefied gas storage tanks? 247. Flow rate of the bottom injection pump for liquefied gas cylinders 248. The latest methods for unloading liquefied gas 249. Liquefied gas 250. Flowchart for filling liquefied gas into bottles 251. Simulation report on desulfurization of dry gas and liquefied gas 252. Question: What is the maximum allowable storage height for a 1000-cubic-meter liquefied gas cylinder? 253. Regarding the sulfur content in liquefied gas. 254. Refined oil-derived liquefied gas has been designated as a key monitoring target this year. 255. Matters related to liquefied gas. 256. How is the pressure inside a liquefied gas tank balanced? 257. What kind of pump is generally used for pumping liquefied gas? 258. Grounding of vehicle fuel filling stations and fuel and liquefied gas tankers. 259. Scale of desulfurization for dry gas and liquefied gas. 260. Who knows how to handle liquefied gas present in catalytic dry gas? 261. Issues with glass plate level gauges in the liquefied gas tank area! ! 262. Questions regarding the water washing of catalytic cracking liquefied gas? 263. Overturning of 36-ton liquefied gas tankers; Dandong fire department in Liaoning handles the situation successfully. 264. Fire hazards of compressed gases and liquefied gases and their fire prevention requirements. 265. Liquefied gas desulfurization towers. 266. Information related to the heat pump process in liquefied gas separation units. 267. Where can one find information on the latent heat of vaporization of liquefied gases under pressure release conditions? 268. How to reduce residual liquids in household liquefied gas. 269. Metering instruments for liquefied gas tanks. 270. Operation of water-bath type liquefied gas vaporizers. 271. How to calculate the water content in liquefied gas residues? 272. How is the mixing ratio of dimethyl ether and liquefied gas determined? 273. Domestic liquefied gas cylinders 274. Application of mass flow meters in measuring liquefied gas flow rates 275. Operating procedures for liquefied gas storage areas 276. Safety management procedures for railway tank cars carrying liquefied gas 277. Safety inspection procedures for gas cylinders and safety supervision procedures for road tank cars carrying liquefied gas 278. How to prevent frosting in liquefied gas pipelines 279. Causes of corrosion of copper components in liquefied gas systems and solutions 280. Knowledge on the design of liquefied gas storage and transportation systems 281. What measures can be taken by catalytic units to improve the yield of liquefied gas? 282. Performance of catalyst cracking liquefied gas coalescers 283. How to deal with wastewater from liquefied gas storage areas? 284. Differences between specialized quick connectors for liquefied gas and ordinary quick connectors 285. GBT19905-2005: Liquefied gas transport vehicles 286. Alkali-free deodorization process for fixed-bed liquefied gas treatment 287. What are the reasons for unqualified total sulfur levels after liquefied gas deprovisioning in polypropylene production, and how to address it? ? 288. Discussion on inspection methods for hydrogen corrosion in LPG storage tanks 289. The dangers of overfilling low-pressure liquefied gases 290. What are the requirements for storing liquefied gas cylinders? 291. Issues related to the mixing of dimethyl ether and liquefied gas. 292. How to determine the saturation temperature of liquefied gas at a given pressure. 293. **Notice from the Supervisory Administration regarding the explosion at the liquefied gas storage tank at the fueling station on Pusan Road in Shanghai on November 24th.** 294. Under what circumstances can waste drainage ditches in liquefied gas storage areas be omitted? 295. Discussion on the desulfurization of liquefied gas using fibrous membranes. 296. Seek information on liquefied gas desulfurization technologies. 297. Emergency assistance: Our plant uses liquefied gas for civilian purposes; the hydrogen sulfide level is within acceptable limits, but the total sulfur content exceeds the specified threshold. 298. Is it better to use servo or radar level gauges for the liquefied gas storage tanks? 299. Liquefied gas prices reach record highs 300. Methods for replacing large liquefied gas storage tanks
Continuing: 301. For liquefied gas cylinder tanks, is it better to have separate inlet and outlet pipelines or shared ones? 302. How should rainwater and spray cooling water from the liquefied gas tank area be recycled? 303. What are the requirements for anti-static grounding of liquefied gas pipeline flanges? 304. What are the causes of scaling in liquefied gas condensers? 305. Basic knowledge on the safe use of LPG cylinders 306. Installation of electronic fences in LPG storage areas 307. Hazard analysis of the operations at LPG filling stations 308. Filling of liquefied gases 309. Schematic diagram of the LPG unloading process? 310. How to handle leaks from liquefied gas tankers 311. The issue of hydrogen sulfide in liquefied gas 312. Assembly plan for the 2000M3 liquefied gas spherical tank at Qiange Refinery 313. Guidelines for loading liquefied gas onto vehicles 314. Explosions involving liquefied gas 315. Analysis of the causes of cracks in liquefied gas desulfurization and dehydration towers 316. JB-T 4781-2005 Liquefied gas tank containers.pdf 317. Design for the storage and transportation of liquefied gas 318. Factors affecting the yield of products in liquefied gas towers 319. Report on the explosion at the “Lidong” liquefied gas station in Shangqiu on July 21, 2005 320. On natural gas and liquefied gas 321. Shield pumps for liquefied gas 322. Complete set of engineering drawings for liquefied gas stations 323. Problems related to starting liquefied gas pumps 324. Solutions to excessive levels of C5 compounds in liquefied gas 325. How to extinguish fires involving liquefied gas cylinders 326. Cases of accidents involving liquefied gas tankers 327. Emergency plans for liquefied gas tankers 328. Safety regulations for liquefied gas road tankers 329. Information regarding pipelines at liquefied gas filling stations 330. Request for help: Safety issues related to the use of liquefied gas and oxygen 331. Research on catalysts for the oxidation reaction of sodium thiol during liquefied gas desulfurization and purification 332. Safety requirements for the operation of liquefied gas carriers GB18180-2000 333. HG 3158-2005 Emergency shut-off valves for liquefied gas tankers 334. Changes in the composition of liquefied gas in storage tanks 335. GB 10478-89 Technical specifications for railway tank cars used for transporting liquefied gas 336. GB17422-1998 Safety guidelines for the transfer of liquefied gas carriers on water 337. HG 3157-2005 Spring safety valves for liquefied gas tankers 338. GB 17265—1998 Safety technical specifications for liquefied gas cylinder filling stations 339. Converting liquefied gas into gasoline
Newly added (2009.3.31): 340. The liquefied gas in the vapor separation unit has variable properties and its operation is intermittent; what precautions should be taken during operation to ensure qualified product quality? 341. Gasoline desulfurization and liquefied gas desulfurization technologies 342. C5 content in liquefied gas 343. Air cooling in liquefied gas has become blocked 344. What should be noted during the alkaline washing of liquefied gas? 345. Control of C3 in dry gas and control of C5 in liquefied gas 346. What are the control parameters for the liquefied gas at the top of the absorption stabilizer? 347. Reaction depth and the C5 content in liquefied gas. 348. Why can’t a alkali cycle be established during the initial alkali washing of liquefied gas? 349. Liquefied gas leakage. 350. Poor flow during the pre-alkali washing of liquefied gas. 351. Liquefied gas distributors. 352. Liquefied gas production capacity. 353. How much liquefied gas is required for the gas separation unit to operate. 354. High sulfur content in liquefied gas. 355. Production of C4 liquefied gas, straight-run gasoline, vehicle-grade liquefied gas, and 90-octane high-octane gasoline. 356. Are coagulators necessary for the alkali washing and water washing of liquefied gas? 357. What types of liquefied gas raw materials can be used to produce vehicle-grade liquefied gas? 358. Is it okay to eliminate the spray pump in the cooling spray system of the liquefied gas tank farm and use direct fire-fighting water instead? 359. Can the fire spray and cooling spray systems for liquefied gas spherical tanks be shared as one system? . . . Are there any guidelines? 360. How should the off-gases from liquefied gas desulfurization be handled? ? ? 361. What is the optimal temperature for the amine solution used in the desulfurization of dry gas and liquefied gas? 362. What is the best use for the coking liquefied gas produced in refineries, as well as the catalytic liquefied gas from which propylene has been extracted? 363. How much liquefied gas is required per hour for heating a continuous reforming unit with a capacity of 1.2 million tons per year? 364. Treatment of coking liquefied gas 365. Treatment regarding the hydrogen sulfide removal tower for liquefied gas. 366. Does anyone know the viscosity of 40% amine solution and that of liquefied gas? 367. Flow meter for liquefied gas. 368. Nitrogen sealing for the desulfurization amine-depleted liquid tank in dry gas and liquefied gas processes. 369. Why are the yields of dry gas and slurry increasing, while the yields of diesel, gasoline, and liquefied gas are decreasing? 370. Everyone, what is the typical outlet temperature of the liquefied gas from your respective units? 371. How is the liquefied gas distributed in the stabilizer top cooler of the catalytic unit? 372. What factors determine the volume of acidic gas in the liquefied gas desulfurization process? 373. What standards are currently in use for the production of light diesel, lead-free gasoline for vehicles, and liquefied gas for vehicles?