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Method for producing tar and hydrocarbon fuel products from coal

A hydrocarbon fuel and tar technology, applied in the field of coal resource processing, can solve problems such as waste of coal, low utilization value of macromolecular substances, and reduction of coal resource utilization efficiency

Inactive Publication Date: 2015-09-09
XIAN ORIGIN CHEM TECH +1
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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 from coal
  • Method for producing tar and hydrocarbon fuel products from coal
  • Method for producing tar and hydrocarbon fuel products from coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0122] Example 1: The present invention uses coal to produce tar and natural gas products

[0123] The implementation steps of this embodiment are as follows:

[0124] See attached for specific implementation steps figure 1 .

[0125] A. Pyrolysis

[0126] Taking a certain long flame coal in northern Shaanxi as raw material, using the methods specified in GB212-91 and GB476-91 for analysis, the coal quality analysis results are listed in Table 1.

[0127] The raw coal is ground to a particle size distribution of 100% by weight less than 500μm, of which 50% is less than 125μm, 40% is less than 75μm, and 25% is less than 44μm powder, and is transported to the heat through a feeding device at a feed rate of 5000kg / h. Solution process. The pyrolysis equipment used in the pyrolysis process is, for example, the pyrolysis equipment launched and sold under the trade name WR-800 pyrolysis reactor by Lanzhou Tianhua Chemical Machinery and Automation Research and Design Institute. The pulveriz...

Embodiment 2

[0149] Example 2: The present invention uses coal to produce tar, natural gas and fuel oil products

[0150] In addition to tar, this embodiment also produces two hydrocarbon fuel products at the same time.

[0151] A. Pyrolysis

[0152] Using the raw coal used in Example 1 as the raw material, the raw coal was initially crushed and ground to a particle size distribution of 100% by weight less than 500 μm, of which 70% was less than 125 μm, 50% was less than 75 μm, and 30% was powder less than 44 μm. And according to the 5000kg / h feed rate, it is transported to the pyrolysis process through the feeder. The pyrolysis equipment used in the pyrolysis process is, for example, the pyrolysis equipment launched and sold under the trade name WR-800 pyrolysis reactor by Lanzhou Tianhua Chemical Machinery and Automation Research and Design Institute. The pulverized coal undergoes pyrolysis reaction for 45 minutes at a temperature of 600°C and atmospheric pressure. Produce a gaseous mixed pr...

Embodiment 3

[0170] Example 3: The present invention uses coal to produce tar, natural gas and fuel oil products

[0171] The implementation steps of this embodiment are roughly the same as those of the embodiment 2, except that the selected processes and technical parameters of some processes are different.

[0172] A. Pyrolysis

[0173] Take the raw coal used in Example 1 as raw material, grind it to a powder with 100% less than 100μm and a particle size distribution that is broken and freely distributed, and transport it to the pyrolysis process through the feeder at a feed rate of 20t / h. The pyrolysis equipment used in the process is, for example, the pyrolysis equipment launched and sold under the trade name WR-800 pyrolysis reactor by Lanzhou Tianhua Chemical Machinery and Automation Research and Design Institute. The pulverized coal undergoes a pyrolysis reaction for 35 minutes under the conditions of a temperature of 800° C. and a gauge pressure of -0.05 MPa. Finally, tar with a mass fl...

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Abstract

The invention relates to a method for producing tar and hydrocarbon fuel products from coal. The method comprises steps of pyrolysis, raw gas purification and desulfurization, a methanation process, a methane separation process, a gasification process, a conversion process, a purification process, a sulfur recovery process, a fine desulfurization process, a synthesis process and the like. With the adoption of the method, raw coal is firstly subjected to low-temperature pyrolysis and then subjected to gasification conversion, the types of coal chemical products are increased, and the utilization efficiency of the coal raw material is improved; the problem that low-rank coal cannot be gasified and utilized by a wet-process entrained-flow bed is solved, the raw material consumption during gasification is reduced, the waste water discharge is reduced, the greenhouse gas production amount in the process is reduced, and efficient class-based and quality-based utilization of the coal resource is realized.

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 using coal to produce tar and hydrocarbon fuel products. 【Background technique】 [0002] my country is rich in coal, short in oil, and low in gas. The use of relatively abundant coal resources to produce relatively scarce natural gas and fuel oil (hydrocarbon fuels) is my country’s basic energy strategy and an important technology to ensure social stability and national security. Guarantee. The use of coal to produce hydrocarbon fuel products is generally a method of re-synthesizing the crude gas produced by gasification after coal gasification. This method has the characteristics of high technological maturity, single crude gas product, and flexible subsequent processing routes. The existing coal chemical industry is focusing on the hot spot route, but with the deepening of our country's understanding of the coal indu...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10B57/18C10L3/08C10L3/10C10J3/60C01B17/02C10G5/00
CPCY02P30/00
Inventor 贺根良罗进成韦孙昌门长贵葛启明戴爱军谢欣馨邹涛曾梅刘军
Owner XIAN ORIGIN CHEM TECH
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