Study On LNG Production Of Recycling Of Chemical Tail Gas Containing Methane And Other Alkanes

Natural gas resources as the most important raw materials of contemporary industry,its reserves are very limited,reasonable and effective use of natural gas resources is the need for sustainable development of society,more and more people attracted wide attention.With the rapid development of domestic industry and manufacturing industry,there is a huge gap in the field of energy,natural gas as a high-quality clean energy,the compressed volume is only 1/625 gaseous,very easy to store and transport.At the same time China’s coke production has been ranked first in the world for many years,after the coke oven after the high temperature dry distillation by-product of a large number of coke oven gas.Coke oven gas as a combustible gas is usually in addition to the furnace heating and production and synthesis,the country each year about 20 billion m3 of waste coke oven gas,not only caused a huge waste of resources on the ecological environment caused great damage.(LNG)with a concentration of up to 99%,which can not only open up new energy fields,technological innovation in the coking industry and energy industry,as well as the industrial upgrading of the coke oven gas and the process of methane and liquefaction.Internal structural adjustment is epoch-making.In this paper,the methods and ideas of optimizing the operation of natural gas plant in coke oven gas are systematically sorted by collecting and analyzing the relevant information about the production of natural gas by methanization after the deep purification of coke exhaust gas at home and abroad.This paper summarizes and summarizes the selection methods of different methanation units and the selection of pretreatment unit equipment compared with the traditional process flow by comparing and analyzing the present situation of the gasification process and equipment used in methane gasification of coke oven gas at home and abroad.On the basis of this,according to the quality and quantity of coke oven gas from a coking plant in Jiangsu Province,the LNG of the chemical tail gas rich in methane and other alkanes was determined by comparative analysis to achieve the recovery of coke oven gas and the methanation reaction The purpose of the LNG is to complete the research and verification of the basic parameters of the equipment pretreatment unit,the operation rules of the pretreatment unit TSA equipment in the analysis device,the pretreatment unit equipment and the methanation plant equipment in the integration device,and the cryogenic liquefaction The operation of the program.