Method for producing alcohol ether fuel from hydrogen prepared from coke oven gas and synthesis gas prepared from scorched particles

Abstract

The invention discloses a manufacturing method of alcohol ether fuel which is produced by synthesis gas while the synthesis gas is produced by hydrogen and scorched particles collaboratively, and the hydrogen and scorched particles are made by coke-oven gas. The method comprises the processes of gas making, rough decoking, fine decoking, pretreatment of coke-oven gas, adsorption and extraction of hydrogen through transformation, methyl alcohol synthesis and methyl alcohol rectification, the alcohol ether fuel is made after the processes. The invention makes use of abandoned scorched particles to prepare water gas and takes advantage of PSA technique to extract hydrogen in coke-oven gas, and alcohol ether fuel is synthesized after adding water gas. Furthermore, the rest materials with higher thermal value are returned to a coke oven to be used as fuel, thus, coke-oven gas firstly is avoided to be blown down and environment pollution and resource waste are reduced; secondly, a single transforming process for preparing methyl alcohol by coke-oven gas, equipment investment and operation risk are avoided; thirdly, the processes of carbon monoxide conversion and decarburization are reduced so as to ensure the integrative use of carbon resources in the system, pyrogenic gas is used rationally and effectively and cost and operation difficulty of methyl alcohol is reduced so as to guarantee the continuous and steady run of system and realizing a plurality of advantages of environmental improvement, rational use of resources, reduction of cost, reduction of working procedure.

Description

technical field [0001] The invention belongs to a method for producing synthesis gas from coke oven gas, in particular to a method for extracting hydrogen from coke oven gas and cooperating with water gas produced by gasification of coke particles to produce synthesis gas to produce alcohol ether fuel. Background technique [0002] my country is a big country of coke production. In 2004, China's coke output reached 209 million tons, accounting for 49% of the world's total coke output. However, coke oven gas cannot be effectively utilized, and about 29-30 billion Nm is emptied every year by "lighting sky lanterns" 3 , which is equivalent to twice the annual gas transmission volume of the country’s West-to-East Gas Transmission Project, causing serious environmental pollution and waste of resources. Currently, in the entire production chain from natural gas to downstream liquid products such as methanol and fuel oil, 60%-70% % of the production cost is the production process o...

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Problems solved by technology

[0006] In order to overcome the shortcomings of the above-mentioned existing traditional technology, the present invention recycles and comprehensively utilizes excess coke oven gas, solves the problem of wasting resources and pollutes the environment after coke oven gas is released, and extracts H from coke oven gas 2 To supplement the insufficient hydrogen of water gas produced by coke gas production to achieve a suitable hydrogen-carbon ratio and solve the problem of H in coke oven gas 2 gas use problem

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