Microwave pyrolysis system and use method thereof

Abstract

The invention discloses a microwave pyrolysis system and a use method thereof. According to the microwave pyrolysis system, microwave generators are arranged on a microwave pyrolysis segment, an activated carbon segment and a graphite segment respectively, baffles and a dust cover are arranged in the microwave pyrolysis segment from bottom to top in sequence, powdered coal is subjected to pyrolysis on the microwave pyrolysis segment, meanwhile, raw coke oven gas and a small number of dust are generated, the raw coke oven gas carries the dust to go upwards, when passing through the multiple layers of baffles in the microwave pyrolysis segment, a large number of the dust is stopped, and goes down under the action of gravity, a small number of the dust is carried by the raw coke oven gas continuously to go upwards to the dust cover, the dust is further isolated, through the microwave generators, heating is conducted, microwave pyrolysis has the characters of a unique heat conduction law,overall even heating of the interior and the exterior, high heating speed and selective heating, pyrolysis can be conducted on coal, oil sludge and oil shale materials, the pyrolysis efficiency is improved, the pyrolysis product yield and the product quality are improved, the content of the obtained raw coke oven gas and obtained nitrogen is controlled, and the high-quality raw coke oven gas can be obtained.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical industry, and in particular relates to a microwave pyrolysis system and a using method thereof. Background technique [0002] my country's energy structure is characterized by rich coal, poor oil, and little gas. As the world's largest coal production and consumption country, for a long period of time, the position of coal resources as my country's leading energy is unshakable. According to statistics, my country's proven coal reserves are 114.5 billion tons, of which low- and medium-rank coal accounts for 55.15% of the country's reserves. With the widespread use of modern comprehensive coal mining technology, the yield of lump coal has decreased (from the current 40% to 10-20%), and the pulverized coal yield has increased (from the current 60% to 80-90%) . Pulverized coal has problems such as easy dust, explosion, flammability, and difficulty in comprehensive utilization. Coal pyrol...

AI Technical Summary

Problems solved by technology

At present, air is generally used as a combustion aid, and internal heat pyrolysis technology makes the nitrogen content in raw coal gas exceed 40%, which greatly reduces the calorific value of raw coal gas and limits the utilization of high added value of raw coal gas

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