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Method for producing tar and hydrocarbon fuel products with coal

A technology for hydrocarbon fuel and tar, applied in the field of coal resource processing, can solve the problems of not being reasonably reflected, wasting coal, reducing the utilization efficiency of coal resources, etc.

Active Publication Date: 2015-04-22
THE NORTHWEST RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coal tar is derived from the natural macromolecular organic substances contained in coal, but in the more violent gasification process similar to the combustion process, the macromolecular substances in coal rarely or cannot achieve their long-chain breaking and escape activities. Mostly or completely converted to CO and H 2 , causing the utilization value of macromolecular substances in coal to be seldom or even not rationally reflected at all, wasting this precious resource in coal, reducing the utilization efficiency of coal resources as a whole, and especially in the utilization of coal with high volatile matter In terms of high-efficiency utilization of low-rank coal, coal classification and quality utilization are considered to be the most reasonable way of coal utilization at present.

Method used

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  • Method for producing tar and hydrocarbon fuel products with coal
  • Method for producing tar and hydrocarbon fuel products with coal
  • Method for producing tar and hydrocarbon fuel products with coal

Examples

Experimental program
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Effect test

Embodiment 1

[0095] Embodiment 1: The present invention utilizes coal to produce tar and hydrocarbon fuel products

[0096] The implementation steps of this embodiment are as follows:

[0097] See attached for specific implementation steps figure 1 .

[0098] A long-flame coal in northern Shaanxi was used as raw material, and the methods specified in GB212-91 and GB476-91 were used for analysis. The results of the coal quality analysis are listed in Table 1.

[0099] The raw coal is ground to a particle size distribution of 100% by weight and less than 500 μm, wherein 55% is less than 125 μm, 40% is less than 75 μm, and 26% is less than 44 μm powder, and is transported to the heat sink through the feeding device according to the feeding amount of 5000kg / h. In the decomposition process, the pyrolysis reaction was carried out for 80 minutes at a temperature of 450 °C and an absolute pressure of 0.05 MPa. The resulting pyrolysis products are treated by the pyrolysis process internal dust r...

Embodiment 2

[0111] Embodiment 2: The present invention utilizes coal to produce tar and hydrocarbon fuel products

[0112] The implementation steps of this embodiment are the same as those of this embodiment, only some technical parameters are different.

[0113] Using the raw coal used in Example 1 as raw material, grind it to 100% less than 100 μm, and the particle size distribution is broken and freely distributed powder, and transport it to the pyrolysis process through the feeding device according to the feeding amount of 20t / h, at a temperature of 800 Under the conditions of ℃ and absolute pressure -0.05MPa, the pyrolysis reaction was carried out for 35min. Finally, the tar with a mass flow rate of 2135kg / h and a water content of 5% by weight, the semi-coke product with a mass flow rate of 13350kg / h and the volumetric flow rate of 4396m 3 / h of crude gas products, of which the pyrolysis crude gas used as heating fuel combustion is 2480m 3 / h.

[0114] The crude gas obtained from ...

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Abstract

The invention relates to a method for producing tar and hydrocarbon fuel products with coal. The method comprises the steps such as pyrolysis, coarse gas purification and desulfuration, methanation reaction, gasification reaction, transformation reaction, purification treatment, sulfur recovery procedure, fine desulfurization treatment and synthesis procedure. According to the method provided by the invention, raw coal is subjected to low-temperature pyrolysis and then subjected to gasification transformation, which not only increases the number of categories of coal chemical products, but also increases the utilization efficiency of raw coal material. The method provided by the invention solves the problem that low-rank coal is hard to gasify and utilize with a wet-process entrained-flow bed, lowers the consumption of raw material in the gasification process, reduces the emission of waste water, lowers the production of greenhouse gas in the process and achieves the purpose of efficient classified and quality-divided utilization of coal resources.

Description

【Technical field】 [0001] The invention belongs to the technical field of coal resource processing. More specifically, the present invention relates to a method of producing tar and hydrocarbon fuel products from coal. 【Background technique】 [0002] my country is rich in coal, short of oil and short of gas. Using relatively abundant coal resources to produce relatively scarce natural gas and fuel oil (hydrocarbon fuel) is my country's basic energy strategic route and an important technology to ensure my country's social stability and national security. ensure. The use of coal to produce hydrocarbon fuel products is generally a method of resynthesizing coal through gasification and then using the crude gas produced by gasification. This method has the characteristics of high technological maturity, single crude gas product, and flexible subsequent processing routes. The existing coal chemical industry hotspots focus on the route, but with the deepening of our country's under...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10J3/46C10J3/84C10K1/20C10K3/04C10L3/08C10J1/06C10G2/00
CPCC10B53/04C10G2/32C10J1/06C10J3/46C10J3/84C10J2300/0936C10K1/205C10K3/04C10L3/08Y02P30/00
Inventor 贺根良罗进成韦孙昌门长贵葛启明戴爱军谢馨欣邹涛曾梅刘军
Owner THE NORTHWEST RES INST OF CHEM IND
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