A kind of coal catalytic gasification reaction material and its preparation method and application

Abstract

The invention provides a coal catalytic gasification reaction material and a preparation method thereof. The coal catalytic gasification reaction material includes coal powder and a coal catalytic gasification catalyst loaded on the coal powder, wherein the coal powder includes a particle size Multiple parts that increase in sequence, and relative to the coal powder of the same mass unit, the amount of coal catalytic gasification catalyst loaded on the coal powder with a larger particle size in the adjacent latter part is not less than that of the adjacent previous part with a smaller particle size The amount of coal catalytic gasification catalyst loaded on the pulverized coal. The invention provides the application of the coal catalytic gasification reaction material in the coal catalytic gasification. Adopting the coal catalytic gasification reaction material of the present invention can effectively improve the gasification activity of coarse coal powder, and can reduce the loss of coal catalytic gasification catalyst caused by the carry-over of fine coal powder, thereby improving the coal gasification as a whole. s efficiency.

Description

Technical field [0001] The invention relates to a coal catalytic gasification reaction material and a preparation method thereof, and the application of the coal catalytic gasification reaction material of the invention in coal catalytic gasification. Background technique [0002] The coal resources in our country are rich and widely distributed. Low-rank coals, especially bituminous coal and lignite, have a high proportion, have the characteristics of high volatile matter and high reactivity, and are suitable as coal chemical raw materials. [0003] According to reports, more than 40% of my country’s bituminous coal reserves have the characteristics of high ash content and high ash melting point, referred to as "double high coal". The ash melting point of these coals is generally above 1400 ℃, and some even higher than 1580 ℃, and raw coal The ash content is as high as 30-40% by weight, even after washing, the ash content is as high as about 15% by weight, which brings some techni...

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Problems solved by technology

[0006] Although coal catalytic gasification technology has the above-mentioned technical advantages, the existing catalytic gasification technology has a certain upper limit requirement for coal powder. Generally, the particle size range of coal powder is generally below 10mm or below 5mm, that is, the particle size range of coal powder It varies between 0-10mm or 0-5mm, and during catalyst impregnation, because under the same impregnation conditions, the catalyst loading of fine-grained coal powder is high, while that of coarse-grained coal powder is low, thus The gasification activity of coarse coal powder is reduced due to the low amount of catalyst loaded on the coarse coal powder, and the catalyst loaded on the fine coal powder is carried out because the fine coal powder is easily carried out during the catalytic coal gasification process , thereby increasing catalyst loss due to carryover of fine coal fines

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