Chlor-alkali chemical industry technology exchange post----ion exchange membrane
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This post was last edited by sunjl1981 on 2013-1-7 00:23. Discussion thread on chlor-alkali chemical technology ---- Ion exchange membranes: Floor 1: 1-100; Floor 2: 101-200; Floor 3: 301-315. 1. Why is it necessary to circulate saltwater and alkali after shutting down an ion exchange membrane plant? 2. Information on the capacity of ion exchange membrane caustic soda production facilities that were under construction or planned for construction in 2009, for market research purposes! 3. Process conditions and control requirements when starting up a new ion exchange membrane cell (rewards may be given to those who contribute). 4. Technical question: How to reduce steam consumption in ion exchange membrane caustic soda production plants. 5. Methods for reducing TOC levels in the brine during normal operation of bipolar ion exchange membrane electrolyzers. 6. What are the main equipment components of a 3 million-ton per year ion exchange membrane caustic soda production plant? 7 Comparison of various types of ion membrane electrolyzers 8 What should be done if the circulating water stops suddenly during normal operation of an ion membrane electrolyzer? Do you need to park? 9. Selection of pipe materials around ion-exchange membrane caustic soda electrolyzers. 10. Abnormalities in the operation of ion-exchange membrane electrolyzers; it is suspected that TOC is the cause – everyone is welcome to discuss this actively. 11. What impact does high alkalinity in the primary brine have on ion-exchange membranes? 12 Reasons for excessive iron content in the secondary brine used in ion-exchange membrane caustic production and corresponding countermeasures. 13 What types of corrosion-resistant valves are mainly used in ion-exchange membrane caustic production? What is the approximate proportion of each type in use? 14 Why does the amount of concentrated brine and pure water required increase after a new ion-exchange membrane is installed in the electrolyzer? 15 Optimization of operating conditions for ion-exchange membranes and conditions for opening the membrane channels. 16 Queries regarding methods for cleaning ion-exchange membrane pipelines and pipeline pressure testing. 17 The application of domestically produced ion-exchange membranes in caustic production. 18 Differences between the ion-exchange membrane process and the raw salt process. 19 The impact of chlorates on the operation of ion-exchange membrane electrolyzers. 20 Anti-freezing measures for equipment associated with ion-exchange membranes (resin towers). 21 Can water balance be maintained in a purely ion-exchange membrane electrolysis process? Is the salt content in the 22 ion membrane at 32% alkali too high, reaching 0.3 ppm? 23 Ion membrane electrolysis Index 24 Conditions of cell assembly using old and new ion membranes 25 Which is larger, the cathode chamber or the anode chamber in an ion membrane cell? 26 What is the neutral point of ion-exchange membrane electrolyzers? 27 What is the equilibrium potential in ion-exchange membrane soda production? 28 Maintenance of ion exchange membranes 29 Data on the electrolyzer with natural circulation and NBZ-2.7 ion exchange membrane from Beihua Machinery 30 The effect of sulfate ions on the alkalinity of ion exchange membranes 31 Characteristics of electrolyzers using natural circulation and polarized ion exchange membranes at high current densities 32 Consumption rates of acid, alkali, and sodium hypochlorite in the production of caustic soda using ion exchange membranes 33 How to determine if an ion exchange membrane is leaking? 34. Pipe materials used in the ion membrane electrolysis dechlorination process. 35. Reasons for arcing at the outlet of the ion membrane cell. 36. Prospects for the domestic production of ion membranes. 37. The diameter of the chlorine scrubber for 150,000 tons of ion membrane caustic soda is 3000 mm, and its height is 13,970 mm; is such a design appropriate? 38. Impact of the shutdown of the pure water pump on the ion membrane system? 39 Energy consumption and economic considerations for concentrating brackish water into saturated salt water after dechlorination using ion exchange membranes. 40 Ion exchange membrane bubbling – take a look. 41 What impacts does unstable steam supply in caustic soda plants have on ion exchange membrane-based caustic soda production systems? 42 Oil pressure in ion exchange membrane electrolyzers. 43 What is the maximum current level that is appropriate for ion exchange membrane electrolyzers? 44 Issues related to operating current in ion exchange membranes and salt content in the alkali. 45 Which processes in ion exchange membrane chlor-alkali plants require emergency power supplies? 46 This is a simple process for ion membrane electrolysis designed by me for use in the laboratory; I would appreciate guidance from Captain Yang and everyone else. 47 Issues related to adjusting the color of ion membrane sheets using alkali. 48 Seeking to purchase used ion membranes. 49 Saltwater concentration in ion membrane electrolysis. 50 Hydrochloric acid in the ion membrane chlor-alkali process. 51 What type of ion membrane is this? 52 The effects of low temperature in ion membrane cells 53 Ion membrane liquid caustic soda 54 What are the water quality requirements for the water used in the production of ion membrane caustic soda? 55 Heat recovery issues related to wet chlorine and wet hydrogen gas using ion membranes 56 Do ion membranes actually have physical channels? 57 What are the differences in the ultimate effects of calcium and magnesium ions on ion membranes? 58 Seeking 50,000-ton ion exchange membrane equipment that has stopped working due to closure. 59 Bubbling of ion exchange membranes. 60 Which company uses liquid salt to produce ion exchange membrane caustic soda? 61 I am conducting ion membrane electrolysis experiments in the laboratory. Should I buy a constant current power supply or a constant voltage power supply? 62. Regarding the sludge generated from the treatment of ion-exchange membrane caustic soda wastewater. 63. Which equipment in the ion-exchange membrane caustic soda production process requires level measurement? 64. Differences between domestic and imported ion-exchange membranes. 65. Will the hydrogen produced by ion-exchange membrane electrolysis contain a large amount of alkali? 66 Control of the amount of acid added to ion membrane cells 67 Low vacuum level in ion membrane vacuum dechlorination towers 68 Suppliers of titanium and nickel for ion membrane systems 69 Reasons for bubbles forming on ion membranes 70 Main factors affecting the performance of ion membranes and electrolysis cells 71 Could everyone discuss the methods used to maintain moisture levels when ion membrane cells are shut down? 72 Are there any colleagues who use brine in ion membrane cells? Please share your experience. 73 Seeking professional advice regarding the construction of new caustic soda ion membrane and PVC production facilities 74 How should discarded ion membranes be disposed of? 75 Methods for handling ion membrane cells during shutdown in chlorine production processes 76 Storage conditions for ion membranes! 77 Frequent start-up and shutdown of ion membrane electrolysis 78 Control of the inlet temperature in the polarization ion membrane dechlorination tower 79 Is it necessary to install a dummy membrane when replacing the membrane in an ion membrane electrolyzer as a whole? Public utility configuration for 80.15 million tons/year ion-exchange membrane caustic soda plant 81 Principle of ion-exchange membrane production. It would be best to have details on the differences between the diaphragm method, mercury method, and ion-exchange membrane method as shown in Figure 82. Can Asahi Glass Co., Ltd. supply customers with both ion-exchange membrane electrolyzers and ion-exchange membranes? 84 What is the investment cost for an annual production capacity of 100,000 tons of ion-exchange membrane caustic soda and diaphragm caustic soda? What are the differences between 85 ion-exchange membrane caustic and diaphragm caustic in terms of usage? 86 How can ion-exchange membrane and diaphragm systems operate most economically and efficiently under low-load conditions? 87 Could everyone discuss the manufacturers of ion exchange membranes? 88 Issue with ion exchange membrane electrolyzers: The catholyte outlet pipe of one cell is blocked by black rubber. 89 Why is the cell voltage at the end frames of polarized ion exchange membrane electrolyzers higher than that at the middle frames? 90. Cut-off time of ion membrane cells 91. Efforts to improve the level of ion membrane technology in China 92. Theoretical power consumption in metal anode electrolysis and ion membrane cells 93. Using ion membrane analysis techniques to guide caustic soda production 94. Internal control parameters for 48% caustic soda (ion membrane process) 95. Let’s discuss the operation conditions of the ion membranes that each of us uses 96. Analysis of various raw material consumptions in ion membrane caustic soda production 97. What causes high salt content in ion membranes? 98. How to extend the lifespan of ion membranes in caustic soda production 99. Discussions on the power consumption in ion membrane electrolysis 100. What is the relationship between PVC and ion membrane caustic soda? # hcbbs
101 The permeability of ion exchange membranes. 102 Why does the amount of caustic soda produced by ion exchange membranes decrease by 5 tons without any apparent reason? 103 Discussion on non-circulation and no liquid discharge in polarized ion membrane electrolyzers 104 Raw materials for ion membrane chlor-alkali processes 105 What materials are used in ion membranes in industry today? 106 Shutdown of Asahi Kasei’s ion-exchange membrane cells. 107 Which domestic companies are currently working on ion-exchange membrane caustic soda projects? 108 Calculations in the production of ion-exchange membrane caustic soda. 109 What is a sacrificial core material in ion-exchange membrane systems? 110 Question: The production, effects, and decomposition of ClO3- in ion-exchange membrane caustic soda. 111 Does anyone have information on rectifiers used in ion-exchange membrane caustic soda production? 112 What is the service life of gaskets in ion-exchange membrane electrolyzers? What are the precautions for pipeline purging during the first start-up of an 113 ion-exchange membrane cell? 114 Request for help with material balance and heat balance calculations for ion-exchange membrane caustic soda production. 115 Classification of ion-exchange membrane electrolyzers. 116 What causes blackening on the surface of ion-exchange membranes? 117 Steam consumption in ion-exchange membrane caustic soda production. 118 Why do the Asahi Kasei ion-exchange membrane plants not have chlorate decomposition units? 119 Shared brine for diaphragm and ion exchange membranes 120 Consumption standards for raw materials in ion exchange membrane caustic soda production 121 Anode impurities in ion exchange membrane electrolyzers 122 What is the difference between natural circulation and forced circulation in caustic soda production using ion exchange membrane technology? 123 Progress in the development of domestic ion exchange membranes 124 Which chelating resin is suitable for the secondary purification of ion exchange membranes? 125 The ion-exchange membrane electrolyzer has now reached the end of its useful life; what can be done to modify it? 126: Which manufacturer produces the ion membrane electrolyzers used by Hubei Yihua? 127: What are the reasons that can cause damage to the ion membrane during operation? 128: Ion membrane electrolyzers used for producing sodium hypochlorite. 129: Is the density of the ion membrane caustic solution the same as that of the diaphragm caustic solution? 130 Qualified suppliers of materials for ion membrane devices 131 Study on the working mechanism of ion membranes? 132.1 million tons/year – capacity of the ion-exchange membrane caustic soda and pure water production plant. 133 – Control of chlorate (NaClO3) in ion-exchange membrane electrolyte solution. 134 – Effluents from ion-exchange membrane electrolyzers. 135 – Help – Sparking at the outlet hose of the ion-exchange membrane anode? ? 136 How is the consumption of ion-exchange membrane caustic soda and concentrated sulfuric acid determined? 137. What process is used by Asahi Kasei to address the accumulation of chlorates in ion exchange membranes? 138. How is pressure testing carried out in ion exchange membrane chlorine systems? 139. The amount of steam required to increase the concentration of ion exchange membrane caustic soda from 32% to 50%, given a production volume of 150,000 tons. 140. Adjusting the acid concentration in ion exchange membrane electrolyzers. 141. Problems related to gasketing in the resin towers of ion exchange membrane systems. 142. Characteristics of ion exchange membranes produced by Asahi Glass, Asahi Kasei, and DuPont. 143. Accessories for ion exchange membranes. 144. The sodium chloride content in caustic soda produced by ion exchange membrane electrolyzers. 145. What causes ion exchange membranes to turn dark brown? 146. Procedures for dealing with fires in ion exchange membrane electrolyzers. 147. Request for guidelines regarding the economic analysis of caustic soda production using ion exchange membrane technology. 148. Schematic diagrams of the ion exchange membrane electrolysis process and the secondary brine treatment process. 149. Reasons why the inlet and outlet hoses of ion exchange membrane electrolyzers turn yellow-brown. 150. What are the reasons for severe corrosion at the anode and cathode of North China Chemical Machinery’s naturally polarized ion exchange membrane electrolyzers? What are the factors that affect operation of 151 ion exchange membranes when the alkali concentration remains constant but the water addition amount decreases? 152 (30 Wealth) Is there any information regarding clusters in ion exchange membranes? (Good heavens, isn’t there any at all?) 153 What is the theoretical decomposition voltage for chlor-alkali ion exchange membrane electrolysis? 154 Ion membrane repair machine 155 Punctures in ion membrane anode plates 156 How to calculate the salt consumption of raw salt in ion membrane electrolysis 157 Why are no circuit breakers installed at the inlets and outlets for the alkaline solution and brine in ion membrane cells? 158 In the ion membrane chlor-alkali industry, which manufacturers produce DCS operating systems? 159 Does an ion membrane operation room require a DCS? 160 Why does the cell voltage decrease in an ion membrane cell that is leaking? 161 Does anyone have an estimate for ion-exchange membrane chlor-alkali production? 162 What is the cost comparison for new projects involving ion-exchange membrane caustic soda production? 163 What are the safety precautions when starting up an ion-exchange membrane plant? 164 For conducting ion-exchange membrane electrolysis experiments in the laboratory, what material is suitable for use as the electrolyzer? 165 Problems with acid addition in Asahi Kasei ion membrane cells 166 Investigation into the usage of ion membrane electrolyzers produced by Beihua Ji 167 The ion membrane method has the following advantages 168 Why is there such a big difference in performance when using ion membrane caustic compared to ordinary caustic? 169 Problems with sulfate in ion-exchange membrane brackish water? 170 Oil pressure control in polarized ion membrane electrolyzers 171 How to cause rapid interlayer delamination in a small piece of ion membrane? 172: Acid addition was stopped due to an unresolved acidification chain reaction; no further chain shutdown occurred. 173: The ion membrane electrolyzer has been started up. 174: Ion membrane current efficiency. 175: Pinholes have appeared on the ion membrane, but the situation is not severe – how much longer can it function? 176 In ion-exchange membrane chlor-alkali plants, which pipes require dual valves? 177 Ion-exchange membrane evaporation unit: SET Company’s operational experience! 178 I need this book! 179 The impact of organic substances in brine on ion-exchange membrane caustic soda production plants 180 Queries regarding the application of ion-exchange membrane electrolysis to LiCl aqueous solutions 181 The current status of domestic production of ion-exchange membrane caustic soda 182 Relevant documents such as operation guidelines for ion-exchange membrane chlor-alkali processes 183 Please discuss methods for calculating the AC power consumption of ion-exchange membranes 184 Help! ! Asahi Kasei ion membrane is bubbling. 185 Problems with U-type manometers used in ion exchange membranes 186 Where can I purchase small quantities of ion exchange membrane cathodes? 187 Issues related to draining liquid from ion exchange membrane cells when they are shut down! 188 Developing ion membrane production! 189 The biggest difference between ion-exchange membrane caustic soda production plants and traditional plants 190 Scaling of plate heat exchangers in ion-exchange membrane caustic soda production plants 191 On the effectiveness of vacuum dechlorination using ion-exchange membrane technology for brackish water 192 Reports on ion-exchange membrane caustic soda production 193 Gaskets for ion-exchange membrane electrolyzers 194 Which ion-exchange membrane manufacturers in Jiangsu, Zhejiang, and Shandong need major repairs this year? 195 There is a question regarding the working principle of ion exchange membranes. 196 When will we be able to use domestically produced ion exchange membranes? 197 Information on the ion-exchange membrane caustic soda production process 198 Urgently need a comprehensive book on the ion-exchange membrane alkali production process! ! ! 199 Which one can draw a schematic diagram of the process from the ion-exchange membrane electrolyzer to hydrochloric acid? 200 Ion-exchange membrane; allowable limit for specific energy consumption at 32%
201. Which domestic companies were working on ion-exchange membrane caustic soda production projects in 2008? 202. Urgent need for detailed information on Beihua Machinery’s polarized ion-exchange membrane electrolyzers. 203. Does anyone have exam questions related to the production of caustic soda using ion-exchange membrane electrolysis? 204. What knowledge does an operator of ion-exchange membrane DCS systems need to acquire? 205. Comparison of the advantages between ion-exchange membrane electrolysis and diaphragm electrolysis. 206. Exchange of experience regarding the use of 6801 ion-exchange membranes. 207. Investigation of the reasons for increased voltage after maintenance of ion-exchange membrane electrolyzers, as well as preventive measures! For the 208 ion-exchange membrane electrolysis unit, what material do you choose for the caustic soda and brine pipelines? 209 Issues regarding the market and development of ion exchange membranes 210 Who are the suppliers of equipment for building ion exchange membrane caustic soda plants? What is the level of automatic control for 211 ion membrane evaporation? Statistics on hydrochloric acid used in the 212100kt/a ion-exchange membrane caustic soda plant? 213 Difficulties related to polarized ion membrane electrolyzers 214 Questions regarding ion membranes, as well as the use and operation of electrolyzers at collection points 215 What is the maximum annual production capacity of ion membrane double-layer electrolyzers? 216 The impact of broken resin in the secondary brine resin tower on ion membrane electrolysis units 217 The process of dechlorinating fresh brine to produce ion membrane caustic soda 218 The influence of impurities in deionized water on ion membrane caustic soda production units 219 During thunderstorm seasons, there can be certain impacts on ion membrane production; do you have any good strategies to deal with this? 220 The issue of drift potential in ion membrane cells 221 What are the causes of bubbling in ion membranes? 222: How long can the gaskets of Asahi Kasei’s ion-exchange membrane electrolyzers in Japan last? 223: What are the processes for evaporating lye in the ion-exchange membrane method for producing soda ash? 224 Help with the operation of ion membrane electrolyzers 225 Issues related to the coating of DuPont ion membranes 226 The installed capacity of a 120,000-ton ion membrane caustic soda production plant 227 Does anyone have detailed information on ICI’s ion membrane electrolyzers in the UK? 228 Consumption per ton of ion-exchange membrane caustic soda; 229 Fluctuations in the cell pressure of ion-exchange membrane cells; 230 Can membrane leakage tests for ion-exchange membranes be ignored? 231 Issues related to the sodium chlorate content in the caustic soda produced by the ion-exchange membrane process; 232 What are the current prices of ion-exchange membranes used in chlor-alkali production? 233: The longest continuous operating time of ion membrane caustic soda systems from various manufacturers. 234: Could anyone provide me with some schematic diagrams of the processes related to chlor-alkali production (ion membrane caustic soda), as well as relevant materials? Thank you very much! 235 Please share how your company controls and adjusts the chlorine-hydrogen pressure difference in its ion exchange membrane cells. 236 I’m looking for a comparison table showing the NaOH concentration as well as the concentration in g/l for diaphragm cell alkali and ion exchange membrane cell alkali. 237 Issues related to ion exchange membrane-based soda production. 238 An analysis of the advantages and disadvantages of having both diaphragm cells and ion exchange membrane cells in current chlor-alkali plants. 239 Damage to ion membranes 240 Does anyone have information on how ion membranes behave under abnormal voltage conditions? 241 Reasons for the high hydrogen-chlorine pressure difference alarm in Asahi Kasei’s ion-exchange membrane electrolyzers. 242 Does anyone have a comparison between the ion-exchange membrane process and the diaphragm process? 243 How should valves be selected in the ion-exchange membrane caustic soda production process? ? ? 244 Power consumption of ion exchange membrane cells 245 New ion exchange membrane electrolysis projects 246 Problem of acid addition to the anode solution in ion exchange membrane caustic soda plants 247 Guidance on shutting down BITAC-854 type cells in ion exchange membrane electrolysis 248 Remedial measures for contaminated ion exchange membranes 249 How much investment is required for a 50,000-ton ion exchange membrane chlor-alkali plant? ? ? 250 Separate analysis of free chlorine and sodium hypochlorite in the dilute brine coming out of the ion exchange membrane process. 251 What is the current scale of ion exchange membrane chlor-alkali production in China? 252 Comparison of investment costs for caustic soda production using the ion-exchange membrane method and the diaphragm method at equivalent scales 253 DuPont ion-exchange membrane N2010 254 Chlorate in ion-exchange membrane electrolyzers 255 Voltage efficiency of ion-exchange membranes 256 Ion-exchange membrane leakage 257 Regarding the power consumption in ion-exchange membrane electrolysis 258 What effects does frequent changes in current have on electrolyzers and ion-exchange membranes? 259 Anode outlet after starting up with a newly installed ion exchange membrane; the tube does not change color. 260 Problems related to chlorates in caustic soda produced using ion exchange membranes. 261 What materials are used in ion exchange membrane electrolysis platforms in accordance with standard specifications? ? 262 Documents on the quality and cost assessment of ion-exchange membrane caustic soda 263 Cases of ion-exchange membrane cell failures and analysis of their causes 264 Material choices for the “cathode liquid receiving tank” in ion-exchange membrane caustic soda production projects 265 The impact of brine concentration on ion-exchange membrane caustic soda production 266 How to stabilize the voltage of ion-exchange membrane electrolyzers 267 What is the current status of ion-exchange membrane technology in China? Views are welcome. 268 Large voltage differences among various cells when increasing the voltage in ion-exchange membrane systems 269 The structure of ion-exchange membranes 270 Discussion on the safe design of using a single chlorine drying system for both diaphragms and ion-exchange membranes 271 What is the import tariff for ion-exchange membrane electrolyzers? 272 Methods for testing for leaks in ion-exchange membranes 273 Requirements regarding the quality of brine for ion-exchange membrane caustic soda production 274 The impact of brine quality on ion-exchange membrane caustic soda production 275 The freezing point of ion-exchange membrane caustic soda 276 Voltage levels when there is a leak in an ion-exchange membrane 277 Recent developments in ion-exchange membrane technology 278 Maintenance of ion-exchange membranes 279 Control of the amount of acid added to ion-exchange membrane electrolyzers 280 Changes in the current efficiency of ion-exchange membrane electrolyzers 281 Pinhole testing for ion-exchange membranes 282 Will ion-exchange membrane caustic soda replace diaphragm caustic soda? 283 Experience sharing on replacing ion exchange membranes 284 The optimal timing for replacing membranes in ion exchange membrane electrolyzers 285 What are the requirements regarding hydrochloric acid used in ion exchange membrane processes? 286 Good methods for recovering chlorine from ion exchange membrane electrolysis 287 How to make proper use of old ion exchange membranes 288 Repairing ion exchange membrane electrolyzers 289 Who can provide a document on the cost analysis of quality for ion exchange membrane caustic soda? 290 Does anyone know anything about the new INOES ion exchange membrane electrolyzers? 291 Do the active groups in the ion membrane structure used in chlor-alkali production include hydrogen ions? 292 Detection and testing of pores in ion membranes. 293 Selection of ion membrane-based caustic soda evaporation systems. 294 Questions regarding ion membranes. 295 Please share some of the key parameters related to the operation of ion membrane electrolyzers. 296 Reasons for bubbling during low-current operation of ion membranes! ! ! 297 Where do you think the natural circulation of ion membrane electrolyzers in your company is manifested? 298: What are the prices per 10,000 tons for several ion membrane electrolyzer manufacturers currently? 299: The issue of free chlorine in brackish water in ion membrane processes. 300: Causes of pinholes in ion membranes and ways to prevent them. 301: How should large-scale ion membrane caustic soda production facilities be designed? ? 302 Is it necessary to soak the ion exchange membranes in water during replacement? 303 Usage of ion exchange membrane electrolyzers by Asahi Kasei in Japan. 304 The main reaction equations behind the increase in sodium chlorate content in the brine produced by ion exchange membrane caustic production. 305 Coatings for ion exchange membrane electrolyzers. 306 Voltage of ion exchange membrane electrolyzers. 307 Does anyone have a maintenance plan for ion exchange membrane electrolyzers? 308 Composition of the active cathode coating in ion exchange membrane electrolyzers. 309 Process for setting up ion exchange membrane caustic production facilities. 310 Discussion on issues related to chlorates and acid addition in ion exchange membrane electrolysis systems. 311 Issues regarding the utilization of hydrogen gas produced by ion exchange membrane caustic production. 312 Investment requirements for a 150,000-ton capacity ion exchange membrane caustic production project. 313 pH measurement in the ion exchange membrane caustic production process. 314 Can anyone provide the operating procedures for various positions involved in ion exchange membrane electrolysis? 315 Safety technical standards for producing caustic using ion exchange membranes
I would like to learn about the production process and maintenance of ion exchange membranes; please give me some guidance
It’s so comprehensive; thanks for the hard work, OP! Studying*
Original poster, do you have any materials? Please send them to me. Thank you. My email address is 1362277058@qq.com