Method for producing synthesis gas by using coal powder as raw material

A technology for synthesis gas and pulverized coal, which is applied in the gasification of granular/powdered fuel, chemical instruments and methods, and the manufacture of combustible gases, etc.

Active Publication Date: 2012-02-15
THE NORTHWEST RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Wet gasification has high requirements on the ash melting point and ash content of coal, and because there is a large amount of liquid water in the raw materials entering the furnace, the efficiency of the gasification process is affected, the gasificati...

Method used

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  • Method for producing synthesis gas by using coal powder as raw material
  • Method for producing synthesis gas by using coal powder as raw material
  • Method for producing synthesis gas by using coal powder as raw material

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Embodiment 1

[0125] Embodiment 1: According to the inventive method, take pulverized coal as raw material to produce synthesis gas

[0126] The method of the present invention is implemented using Shaanxi Shenfu coal as a raw material. The raw material calorific value: 27070J / g, the main element analysis results are listed in the following table 1:

[0127] Table 1: Analytical results of major elements of Shaanxi Shenfu coal

[0128]

[0129] The implementation steps are as follows:

[0130] A. Preparation of dry coal powder: After removing iron that may exist in Shaanxi Shenfu coal with a magnet, use an impact crusher produced by Shanghai Yuanhua Machinery Manufacturing Co., Ltd. to crush coal particles with a particle size of less than 30mm, and then let this The coal particles are lifted to the silo 6 through the bucket elevator 5 . The coal particles in the silo are quantitatively sent to the mill 8 by the feeder 7, and the mill grinds the coal particles into coal powder, and a...

Embodiment 2

[0145] Example 1 The method of the present invention is implemented using Shaanxi Shenfu coal as a raw material, which is long-flame coal with low ash content and low ash melting point with a relatively shallow metamorphism. In this embodiment, Huainan lean coal with high ash content, high ash melting point and deep deterioration degree is used as raw material. The calorific value of the raw material: 22590J / g, the main element analysis results are as follows:

[0146]

[0147] The implementation steps are as follows:

[0148] A. Preparation of dry coal powder: After the Huainan coal is removed with a magnet to remove possible iron, it is crushed with an impact crusher until the particle size is less than 30 mm, and then the coal particles are lifted to the silo 6 through the bucket elevator 5 . The coal particles in the silo are quantitatively sent to the mill 8 by the feeder 7, and the mill grinds the coal particles, and at the same time fully exchanges heat with the hot...

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Abstract

The invention discloses a pressurization high temperature gasification method of dry coal powder. The method comprises the following five steps: the preparation of dry coal powder, the pressurization delivery of the dry coal powder, the pressurization and high temperature gasification of the dry coal powder, the cooling of high temperature crude synthesis gas and molten ash and the washing and purifying of the crude synthesis gas, and the treatment of water containing fine ash. The method is suitable for not only the bituminous coal with low ash content and low ash fusion point, but also other types of coal, which widely exist at home and abroad, have different metamorphic degrees and qualities and contain the coal with low ash content and high ash fusion point, the coal with high ash content and low ash fusion point and the anthracite, bituminous coal and lignite with high ash content and high ash fusion point. The method has good gasification index, simple equipment, flexible process configuration, low investment and operation convenience, the large-scale product is easy to realize, and the method has the beneficial effects of wide raw material application range, environmental friendliness and the like.

Description

【Technical field】 [0001] The invention belongs to the technical field of high-efficiency and clean utilization of coal, and more specifically, the invention relates to a method for preparing synthetic gas by pressurized high-temperature gasification of dried coal powder. 【Background technique】 [0002] As we all know, among the world's mineral energy reserves, hydrocarbon-containing substances such as petroleum, natural gas, and coal account for a considerable proportion, while coal carbon sources account for an overwhelming proportion of hydrocarbon resources. Realizing the clean and efficient utilization of coal has great practical and strategic significance. The use of coal gasification to realize clean and efficient utilization of resources has developed rapidly in recent years, avoiding the low utilization rate of heat energy caused by direct combustion of coal, and producing a large amount of greenhouse gases and solid dust, and curbing the further damage to the ecolog...

Claims

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Application Information

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IPC IPC(8): C10J3/46C10J3/50C10J3/84C10J3/72C02F9/10
CPCY02E20/18
Inventor 贺根良韦孙昌徐宏伟朱春鹏葛宁罗进成郑亚兰门长贵
Owner THE NORTHWEST RES INST OF CHEM IND
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