The invention provides a
methane chloride recycling and feeding process and device. The process comprises the following specific steps: removing the vast majority of dust from a
methane-
chloride-containing gas mixture from the top of a reactor via a dust removal
system, and then washing the gas mixture via a dust removal
tower to remove high-boiling-point substances and
fine powder; after condensing a material on the top of the dust removal
tower via a cooling
system, taking part of the material as a cleaning solution, and feeding the other part of the material to a refining
tower; feeding noncondensable gas in the cooling
system to a compressing system; carrying out heat exchange on compressed gas and
liquid methane chloride via a
vaporizer, vaporizing the
liquid methane chloride, coolingand condensing the compressed gas, and then feeding the compressed gas into a condenser for further condensing, carrying out
tail gas removal treatment on noncondensable gas in the condenser, and feeding condensate to a buffering tank; enabling the
methane chloride of the buffering tank and the methane chloride of a
storage tank to enter the refining tower together; and enabling a
gas phase on the top of the refining tower to enter a partial condenser for partial condensing, and feeding the condensate into a refluxing tank and totally refluxing the condensate into the refining tower. The methane chloride can be recycled effectively, the main content is higher than 99.5%, moreover, the process is simple, the investment of equipment is low, and
energy conservation and consumption reductionare implemented.