Production of vinyl chloride from acetylene
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Is an inert gas added during the reaction of acetylene and hydrogen chloride to produce vinyl chloride? :handshake
Our factory doesn’t add it, and I haven’t heard of any other factories doing so either.
It’s a synthetic reaction; why add an inert gas? Does it promote a reaction or protect something?
Inert gases should be eliminated as much as possible.
I don’t think I’ve heard of anything that specifically adds an inert gas?
The impurities present in the reaction of acetylene with hydrogen chloride include H2O, N2, H2, and so on. The water content must not exceed 0.03%; the lower, the better. Exceeding this limit can cause the catalyst to clog, leading to an increase in pressure drop and localized overheating. Oxygen and chlorine cannot be mixed into the gas mixture either. One more question: why do you want to add inert gases? Can it increase the reaction rate and conversion rate? It should be noted that at 180°C, the conversion rate remains above 99%, and the reaction speed is even faster – extremely rapid. Last edited by shizhiyong001 on 2009-2-27 14:28.]
I’ve been working in this industry for five years, and I haven’t heard of the need to add inert gases; if inert gases are used, it would increase the load on the distillation process.
Adding an inert gas increases the entrainment loss in exhaust gas venting. Unless in one case, where the converter is not used for a long time and is protected with nitrogen.
I am working on designing this reaction; I saw a problem in a book that involved nitrogen
In the production of vinyl chloride, nitrogen is primarily used for venting the system or equipment; it is employed during the feeding and venting process of the acetylene generator. The introduction of inert gases increases the load on the distillation unit as well as on the exhaust gas condenser. It is necessary to remove as much impure gas as possible.
I don’t think I’ve heard of anything that specifically adds an inert gas?
The original poster is a bookworm~~~:lol
Haven’t heard of it; are we just uninformed? The inert gas used is usually nitrogen, employed as a protective measure when the converter is not in use for an extended period of time.
Adding nitrogen is only to maintain pressure when the system is shut down or for purging; activation must be carried out before use
In a pure synthetic reaction, inert gases should not be added; however, due to objective reasons, a certain amount of impurity gases are always present during the reaction process, such as nitrogen! Two sources: 1, a small amount of gas remaining during pipeline purging and insulation ； 2. Small amounts of gases entrained in the HCL synthesis reaction, such as nitrogen, hydrogen, etc. The entire process can be determined through material balance, and it is worth studying.
Adding nitrogen is useless; it only increases the distillation load. If nitrogen is added during the conversion process, the impact is minor, but if it is added before conversion, it alters the ratio of acetylene to hydrogen chloride, resulting in a greater impact