New combined technique for simultaneously preparing tar, phenol and water gas

Abstract

The invention discloses a new combined technique for simultaneously preparing tar, phenol and water gas. The technique is characterized by comprising the following steps: by using smokeless lump coal, blind bar coal, bituminous lump coal and bituminous bar coal as raw materials, crushing hot semicoke prepared by a traditional semicoke-furnace semicoke preparation process, and directly sending into a fluidized bed water gas preparation device; purifying and separating hot coke furnace gas prepared by the semicoke furnace to remove organic substances, thereby obtaining a hydrogen-nitrogen-carbon monoxide-carbon dioxide gas mixture, tar and phenol; and carrying out solid separation on the water gas prepared by the fluidized bed to obtain hydrogen, nitrogen, carbon monoxide and carbon dioxide. The technique solves the problem that the semicoke prepared by the semicoke furnace needs to be cooled and quenched, also solves the problems of high organic content and need for drying raw coal in the water gas prepared by the fluidized bed, and overcomes the defect that high-added-value tar and phenol can be converted into water gas in the fluidized bed water gas preparation process.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to a new combined process for simultaneously producing tar, phenol and water gas. Background technique [0002] At present, the process of preparing semi-coke in semi-coke oven is as follows: raw coal is used as raw material, and the coke oven gas is obtained by drying, dry distillation, blending and cooling processes, and after purification, hydrogen, nitrogen, carbon monoxide and carbon dioxide mixed gas and tar, Phenol; semi-coke is obtained after cooling the hot coke, and the product semi-coke is obtained after heating and drying the semi-coke. The disadvantages of this process are: there is a cooling section in the preparation of semi-coke, which will undoubtedly cause huge heat loss, the prepared semi-coke contains water, the investment in the treatment of phenol-containing wastewater is huge, and it is easy to cause environmental pollution. [0003] The proces...

AI Technical Summary

Problems solved by technology

The disadvantages of this process are: there is a cooling section in the preparation of semi-coke, which undoubtedly causes huge heat loss, the prepared semi-coke contains water, the investment in the treatment of phenolic wastewater is huge, and it is easy to cause environmental pollution

The disadvantages of this process are: the content of organic impurities in the product gas is relatively high; the raw coal has a drying section, which requires relatively large heat consumption

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