Who can answer the questions about naphtha?

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1. Naphtha density: up to Kg/m3; explosion limit: %-- %. 2. H2S is a highly toxic substance; when its concentration in the surrounding air reaches mg/m3, it can cause sudden unconsciousness within seconds, leading to instant death. 3. Explosion limits of n-pentane: %--%; explosion limits of isopentane: %--%; explosion limits of H2: %--%. 4. The naphtha feedstock is required to have a total sulfur content of ≤ PPm, a total chlorine content of ≤ PPm, and a bromine value of ≤ gBr/100g. 5. The sulfur content in naphtha hydrogenation products is ≤ PPm, and the chlorine content is ≤ PPm to be considered qualified. 6. The reaction section of the naphtha hydrogenation unit is crucial; the furnace and reactor are key components thereof. The wall thickness of the furnace tubes in the radiant chamber of the furnace is mm, while the wall thickness of the reactor is mm. The design temperature for the furnace tubes in the radiant chamber is °C, and the design temperature for the reactor is °C. 7. Design pressure of V-901: MPa; design pressure of V-902: MPa; design pressure of V-903: MPa; design pressure of V-904: MPa; design pressure of V-905: MPa; design pressure of V-906: MPa; design pressure of R-901AB: MPa. 8. Safety valves are the most important safety protection devices. Under normal circumstances, the set pressure of safety valves is lower than the design pressure of the equipment. The set pressure of the outlet safety valve for the recycle hydrogen compressor is ___ MPa, and that of the safety valve V-903 is ___ MPa. 9. The names of the C5 separation units are T-101 and T-102. The ignition temperature of n-pentane is °C, and that of isopentane is °C. The purity of n-pentane in the product is ≥, while the purity of isopentane is ≥. 10. During normal production, the pressure of the circulating water pump is Mpa; the steam pressure entering the unit is Mpa, with a temperature of ℃. The pressure of the instrument air in the unit area is Mpa, while the rated exhaust pressure of the air compressor in the nitrogen production room is Mpa. The volume of compressed air produced is M3/min. 11. The rated flow rate of feed pump P-2103 in the MTBE desulfurization unit is M3/H, and its head is m. The diameter of reboiler E-2106 is mm, and that of cooler EC-2101 is mm. 12. For the three storage tank areas V-3012, V-3015, and V-3016, the names of the media are ____, ____, ____. The maximum safe liquid level in the tanks is ___ m. 13. In terms of the internal structure of the trays, the plate towers in the three unit areas mainly include , . 14. The structures of mechanical pumps vary, but there are mainly two types of sealing methods: sealing and sealing. Fire foam is used in oil processing facilities, tank areas, and key fire protection systems. The flow rate of our factory’s fire foam pumps is L/S, the rated pressure is MPa, the capacity of the fire foam tanks is m3, the maximum flow rate is L/S, and the mixing ratio is — %. The maximum water level in the fire foam tank is m. The qualified discharged wastewater from the sewage treatment system meets the following standards: COD ≤ mg/L, ammonia nitrogen ≤ mg/L, and total salts ≤ mg/L. The testing instruments for wastewater treatment systems include dissolved oxygen meters, pen-type pH meters, and others. 18. The equipment of the flare system mainly includes the flare tower, pilot light, flare nozzle, etc. Q&A on equipment maintenance (3 points per question, totaling 30 points). What are the “four understandings” and “three abilities”? What is the purpose of turning the standby pump? 3. What are the “five fixed principles” and “three filtrations” for lubricating oil? What are the main components of a floating-head heat exchanger? What are Dàyǒu Company’s records regarding the equipment? What roles does equipment lubrication play? 7. What preparatory steps must be taken before operating a centrifugal pump? Main components of a centrifugal pump? 9. What are the components of the cylindrical heating furnace in this device? 10. Name 6 static equipment items in this device? Safety Quiz (0.5 points per blank; 3 points for each easy question; total 17 points) What are the necessary conditions for combustion? A. Combustible materials B. Oxidizers C. What are the pathways for heat propagation? A. Heat conduction B. Heat convection C. What are the basic principles of fire extinguishing? A. Cooling B. C. D. Chemical inhibition. Into which 2 categories can explosions be divided? A. Physical explosion B. . What components make up a fire extinguisher? A. Cylinder; B, C. Fire extinguishers – into which categories can they be classified based on their mode of movement? A. Portable B. . What components make up a fire hydrant? A, B, outlet C: When using a dry powder fire extinguisher to combat fires involving flammable and combustible liquids, it should be aimed in a sweeping motion. When using a carbon dioxide fire extinguisher outdoors, it should be directed in a certain direction for spraying. What is the principle behind water’s ability to extinguish fires? A. Cooling B. 11. Push-type fire extinguishers are generally operated by individuals. 12. What are the things to note when reporting a fire? A. When calling the fire department, stay calm and provide information promptly and accurately. Clearly state which department and area is on fire, what materials are burning, and the extent of the fire. B. C. Designate personnel to wait at intersections where fire trucks might arrive to guide them. D. The six strict requirements for operators? The six prohibitions for hot work? 15. The four principles of safety management: no letting go? Brief answers on processes (18 points in total). What is the process flow for wastewater treatment? (4 points) What are the startup steps for naphtha hydrogenation? (4 points) What are the operating steps for lighting the furnace? (3 points) What are the steps for switching a centrifugal pump? (3 points) 5. What are the inspection routes and contents for the three overall installation areas? (4 points)