Low-rank coal drying and pyrolysis integral quality improvement processing process equipment

Abstract

The invention relates to low-rank coal drying and pyrolysis integral quality improvement processing process equipment, which comprises a pyrolysis device, a drying device, a circulation fan flow division device, a support rotating device, an annular material guide airlock device, an annular discharging airlock device and a discharging device, wherein the pyrolysis device is arranged in the dryingdevice; the circulation fan flow division device is arranged in the drying device; the support rotating device is arranged at the bottom of the drying device and is opposite to the circulation fan flow division device; the annular material guide airlock device is arranged at one end of the drying device and communicates with the pyrolysis device; the annular discharging airlock device is arrangedat one end of the pyrolysis device, and is opposite to the annular material guide airlock device; the discharging device is arranged at the annular discharging airlock device. The pyrolysis device ofthe low-rank coal drying and pyrolysis integral quality improvement processing process equipment and the drying device are combined into a whole; the process arrangement is simplified; the process cost is reduced.

Description

technical field [0001] The invention relates to the technical field of coal chemical technology equipment, in particular to a low-rank coal drying and pyrolysis integrated quality-upgrading treatment process equipment for low-rank coal quality-upgrading treatment and power plant coal clean combustion. Background technique [0002] Low-rank coal refers to coal with a relatively low degree of coalification. It is mainly divided into lignite and sub-bituminous coal. It has the characteristics of high volatile matter, high activity, and high moisture, making low-rank coal inconvenient for long-distance transportation. Low, direct combustion not only wastes a lot of energy, but the harmful gases such as dust, sulfur oxides, nitrogen oxides, hydrocarbons and carbon monoxide contained in the combustion products are discharged into the atmosphere and cause serious air pollution. The current smog that endangers the closure of businesses and schools has a causal relationship with the ...

AI Technical Summary

Problems solved by technology

[0003] The current technology used for industrial pyrolysis of low-rank coal mainly includes vertical carbonization furnace thermal cracking. This technology requires large particle size of raw coal and poor applicability; long production cycle, low processing capacity, low tar output, and low calorific value of gas

[0004] The rotary pyrolysis furnace that has recently entered the experiment and pilot test divides the middle moisture drying and pyrolysis gas production of low-rank coal into two rotary furnaces, and is indirect externally heated, with low thermal efficiency and difficult temperature rise. The feed port is easy to coke and block

The transmission and support components are all placed on the high-temperature heating cylinder, resulting in large thermal deformation and large heat loss. Usually, thicker insulation materials are required. The process is long and the waste heat of pyrolysis cannot be effectively utilized.

Images