Coal bed gas enrichment process

Abstract

The invention discloses a coal bed gas enrichment process comprising the steps of: adsorbing methane in a coal bed gas with an ethyl ether solvent; then desorbing a solvent rich solution which adsorbs methane to separate methane; collecting to obtain a methane-rich gas; removing ethyl ether from the methane-rich gas to prepare a methane product. The coal bed gas enrichment process is simple in route, convenient to operate and small in investment.

Description

technical field [0001] The invention relates to the field of coal bed gas treatment in coal mines, and specifically designs a coal bed gas enrichment process. Background technique [0002] Coalbed methane, commonly known as gas, is a hydrocarbon gas that exists in coal seams, and its main component is CH 4 . Coalbed methane has high comprehensive utilization value. In addition to civil use, it can also be used as power fuel for gas turbine power generation, heat supply, compression and liquefaction, and chemical products such as methanol and synthetic ammonia. It is also the basis of organic chemical products such as pesticides, medicines, and dyes. raw material. Table 1 is a table of the extraction volume, utilization and discharge of coalbed methane in my country from 2007 to 2011. [0003] Table 1 2007 ~ 2011 my country's coalbed methane extraction, utilization, emission table [0004] [0005] At present, the main reason for a large amount of coalbed methane venti...

AI Technical Summary

Problems solved by technology

[0011] Among the five processes mentioned above, some of them have large investment in basic equipment and high operating costs, and some of them are immature, complicated in process and high in energy consumption.

Images