Bent pipe heating type coal substance decomposer

Abstract

The invention discloses a bent pipe heating type coal substance decomposer comprising a sealed rotary kiln body with a feed hole and a discharge hole, wherein a flame pipeline heating mechanism is arranged in the kiln body; a coal substance propelling and decomposing channel is formed between the flame pipeline heating mechanism and the inner wall of the kiln body; the kiln body is provided with a coal decomposed gas collection tube communicated with the coal substance propelling and decomposing channel; and a flame radiating pipe is a helical pipeline the external circumstance of which is arranged on the inner wall of the kiln body. Because the coal substance propelling and decomposing channel is arranged in the high-temperature kiln body, a great quantity of hot air in the high-temperature kiln body surrounds the coal substance propelling and decomposing channel and are conducted and radiated to coal dust in the coal substance propelling and decomposing channel; and the coal dust fully adsorbs the hot air, so the coal dust is heated and decomposed, and the coal substance is decomposed into gas, tar gas and coal with high calorific value in the coal substance propelling and decomposing channel.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of coal substances, energy saving and emission reduction, and in particular relates to a curved tube heating type coal substance decomposition device. Background technique [0002] Among the known technologies, there are those that use coal to produce gas, some that use coal to produce natural gas, and those that use coal for high-temperature, medium-temperature, and low-temperature coking and gas production. Screening block materials will increase the cost of raw materials, or the calorific value of the produced gas is not high, the added value is not large, and the economic and social benefits are not significant. The heating method of the furnace can be divided into external heating type, internal heating type and internal heating and external heating mixed type. The heating medium of the external heating furnace is not in direct contact with the raw materials, and the heat i...

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly two types of commonly used coal decomposition equipment. One is a vertical kiln structure, which burns flue gas and combustible gas produced by coal, making the combustible gas low in purity and low in added value, and some of it is discharged, causing A lot of waste of resources and pollution of the environment

Another type of vertical kiln is that the coal blocks are placed on a partition with holes, and there is a heater above the coal block. Because the coal blocks on the partition have a certain accumulation thickness, they cannot be heated and decomposed evenly, and the decomposed gas needs to be used to Circular heating, decomposition, and more importantly, because of the existence of a large number of circulation vent holes on the coal separator, coal powder will leak from the vent holes, so when coal powder needs to enter the shaft kiln, it needs to be processed into coal lumps first, Therefore, pulverized coal cannot be directly used for kiln body separation, which correspondingly increases the cost of pulverized coal decomposition and reduces economic benefits

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