Solid waste pyrolyzing system coupling with direct combustion of high-temperature pyrolysis gas

Abstract

The invention relates to a solid waste pyrolyzing system coupling with direct combustion of high-temperature pyrolysis gas. The solid waste pyrolyzing system is characterized in that an outlet of a solid waste conveying system is connected with an inlet of a pretreatment system; a material outlet of the pretreatment system is connected with an inlet of a pyrolysis furnace; a residual coke outlet of the pyrolysis furnace is connected with a coke collecting tank; a gas outlet of the pyrolysis furnace is connected with an inlet of a high-temperature synthesis gas pipeline; a high-temperature deduster is arranged on the high-temperature synthesis gas pipeline; an outlet of the high-temperature synthesis gas pipeline is connected with an inlet of a combustion system; an air blower is connectedwith an air preheater; a hot air outlet of the air preheater is connected with the inlet of the combustion system; an outlet of the combustion system is connected with an inlet of a heating furnace; the pyrolysis furnace is positioned in the heating furnace; a flue gas outlet of the heating furnace is connected with the air preheater; a flue gas outlet of the air preheater is connected with a fluegas purifying system. The solid waste pyrolyzing system coupling with the direct combustion of high-temperature pyrolysis gas has the advantages that the energy recycling rate is higher, the blockageis avoided, and the secondary pollution to tar is avoided.

Description

technical field [0001] The invention relates to a solid waste pyrolysis and pyrolysis tar purification treatment system. Background technique [0002] The rapid development of my country's economy and urbanization has led to a large amount of urban solid waste. The traditional direct landfill method of solid waste not only occupies a large amount of land resources, but also easily causes secondary pollution of groundwater and soil. It is difficult to realize the high-value utilization of solid waste by means of solid waste incineration. Compared with direct landfill and incineration methods, solid waste pyrolysis technology can not only realize the reduction, harmlessness and resource utilization of solid waste, but also obtain combustible synthesis gas, coke and other products. The main technical bottleneck of solid waste pyrolysis technology is the inevitable generation of tar during the pyrolysis process, resulting in a series of problems such as a decrease in the energy...

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Problems solved by technology

[0003] In order to overcome the shortcomings of the existing solid waste pyrolysis technology, such as the low energy recovery rate of solid waste caused by pyrolysis tar, the blockage of equipment and pipelines by pyrolysis tar, and the secondary pollution caused by pyrolysis tar, the present invention provides a Solid waste pyrolysis system with high energy recovery rate, avoiding clogging and tar secondary pollution, coupled with direct combustion of high-temperature pyrolysis gas

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