A method for simultaneously producing tar, phenol and water gas

A water gas and tar technology, applied in the field of coal chemical industry, can solve the problems of large heat consumption, heat loss, high organic impurity content, and achieve the effect of strengthening the vaporization process and saving energy consumption.

Active Publication Date: 2015-12-30
杨皓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • A method for simultaneously producing tar, phenol and water gas

Examples

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Comparison scheme
Effect test

Embodiment 1

[0017] In this embodiment, a kind of anthracite lump coal is used as raw material, and the main composition is: 86% fixed carbon, 3% moisture, 6% volatile matter and 5% ash.

[0018] (1) Anthracite lump coal is dehydrated to less than 2% through the drying layer, and then enters the dry distillation layer to remove volatile matter to 5%, and simultaneously obtains hot coke oven gas and hot semi-coke. The hot coke oven gas passes through the washing equipment to obtain tar and phenol water, and then through the organic matter separation equipment to obtain coke oven gas with high calorific value and the mixed gas of hydrogen, nitrogen, carbon monoxide and carbon dioxide. The tar phenol water is obtained by extracting phenol and tar to obtain tar, phenol and Oil-poor phenol water, part of oil-poor phenol water is returned to the purification equipment as washing water, and part of oil-poor phenol water is vaporized and enters the fluidized bed as a gasification agent; part of the...

Embodiment 2

[0021] In this embodiment, a lignite lump coal is used as a raw material, and the main composition is: 28% fixed carbon, 40% moisture, 27% volatile matter, and 5% ash.

[0022] (1) The lignite lump coal is dehydrated to less than 5% through the drying layer; then enters the dry distillation layer to remove the volatile matter to 5%, and simultaneously obtains hot coke oven gas and hot semi-coke. The hot coke oven gas passes through the washing equipment to obtain tar and phenol water, and then through the organic matter separation equipment to obtain coke oven gas with high calorific value and the mixed gas of hydrogen, nitrogen, carbon monoxide and carbon dioxide. The tar phenol water is obtained by extracting phenol and tar to obtain tar, phenol and Oil-poor phenol water, part of oil-poor phenol water is returned to the purification equipment as washing water, and part of oil-poor phenol water is vaporized and enters the fluidized bed as a gasification agent; part of the high...

Embodiment 3

[0025] In this embodiment, a long-flame coal stick is used as a raw material, and the main composition is: 35% fixed carbon, 10% moisture, 46% volatile matter, and 9% ash.

[0026] (1) Long-flame coal coal sticks go through the drying layer to remove water to less than 2%, and then enter the dry distillation layer to remove volatile matter to 8%, and obtain hot coke oven gas and hot semi-coke at the same time. The hot coke oven gas passes through the washing equipment to obtain tar and phenol water, and then through the organic matter separation equipment to obtain coke oven gas with high calorific value and the mixed gas of hydrogen, nitrogen, carbon monoxide and carbon dioxide. The tar phenol water is obtained by extracting phenol and tar to obtain tar, phenol and Oil-poor phenol water, part of oil-poor phenol water is returned to the purification equipment as washing water, and part of oil-poor phenol water is vaporized and enters the fluidized bed as a gasification agent; p...

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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 method 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 process of making sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/04C10K1/10C10J3/54
Inventor 杨皓宁平王巍王娟芸
Owner 杨皓
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