Coal gasification reaction device and reaction system and process based on the device

Abstract

The invention provides a coal gasification reaction device, which is sequentially provided with a first straight pipe gasification section and a second straight pipe gasification section from bottom to top; the first straight pipe gasification section and the second straight pipe gasification section The ratio of the diameter of the section is 2:1-3:1; the length-to-diameter ratio of the first straight pipe gasification section is 10:1-20:1, and the length-diameter ratio of the second straight pipe gasification section is 10:1-20:1, so that the flow field distribution inside the coal gasification reaction device can be optimized. In the device, as the height of the material bed increases, the solid material decreases, the gas component increases, and the porosity of the material occurs. At this time, by reducing the diameter of the upper gasification section and increasing the internal gas flow rate, it is conducive to the rapid export of gas components, and plays a "traction" role on the material-intensive area in the lower part, which is conducive to the continuation of the internal flow field Stable operation ensures the continuous and efficient operation of the gasification reaction inside the device, the conversion rate of the gasification reaction is high, and the yield and quality of crude gas can be greatly improved.

Description

technical field [0001] The invention relates to a coal gasification reaction device, a reaction system and a process based on the device, and belongs to the technical field of coal gasification. Background technique [0002] With the increasingly tight supply of fossil energy, especially oil, and the increasingly serious problems of environmental pollution and global warming caused by the use of fossil energy, human beings urgently need to change the traditional energy consumption pattern and consumption structure. At present, the world's energy consumption structure has completed the transformation from solid energy to liquid energy, and has begun to transform to gas energy. However, my country's primary energy consumption is still dominated by coal, accounting for about 70%. In order to realize the strategic adjustment of my country's energy structure, coal gasification and other clean coal utilization technologies have been widely developed in recent years, and the develo...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that in the existing coal gasification process, the fluidized gasification reaction inside the riser reactor cannot run stably, the reaction conversion rate is low, and the crude gas production is low. Coal gasification reaction device and process that can realize coal gasification at low temperature

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