Method for coal desulfurization catalyzed by microwave

Abstract

The invention discloses a coal desulfurization method which utilizes microwave to catalyze, which comprises the following steps: utilizing water to be dissolvent, leading coal and auxiliary agent mixture to form more even disperse system through physically stirring, and doing a thermal desulfurization reaction under the catalytic action of microwave. The method has the advantages that firstly, the method has excellent desulfurization efficiency under the premise without damaging coal quality structure, secondly, the method has high reaction efficiency and excellent statute of limitation, thirdly, the method has simple operation, whose auxiliary agent is easy to get, and the method has wide popularization using value.

Description

technical field [0001] The invention relates to a coal desulfurization method, in particular to a coal desulfurization method utilizing microwave catalysis. Background technique [0002] With the rapid development of the international economy, energy and environmental issues have become increasingly prominent. On the one hand, the high consumption of energy has brought high demand for resources, but at the same time, a large amount of resources in the world are wasted due to quality problems, and the energy shortage is imminent; on the other hand, the massive use of energy has caused the deterioration of environmental problems, While seriously affecting economic development, it also greatly threatens the living environment of human beings. The above problems are clearly reflected in coal, an important energy resource in my country. In China, due to the excessive emission of sulfur dioxide to the atmosphere due to the massive combustion of coal, my country's total sulfur di...

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Problems solved by technology

[0004] The invention with the application number 97116584.X discloses a deep physical desulfurization method for coal. After the coal is crushed, it is separated by emulsification and high-shear stirring to obtain low-sulfur coal. However, only inorganic sulfur can be removed, and the desulfurization rate is not high. High problem; the application number is 03137590.1, which discloses a new process for reducing the sulfur content of coke and a corresponding series of sulfur removal agents, which is a method of using metal compounds to convert solid sulfur in coal into volatile sulfur compounds to achieve The purpose of the method, but there is still a method with a limited desulfurization rate; the application number is 200420002579.7, which introduces a microwave desulfurization and nitrogen removal device. Nitrogen removal, but this method must completely destroy the coal structure before it can be used, and its scope of application is relatively limited

[0005] Although the above technical solutions have made some progress in the desulfurization effect, there is currently no desulfurization technology that has a high desulfurization efficiency and does not damage the coal matrix structure, and there is generally a problem of high input costs

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