Environment-friendly heat recovery system capable of reducing dioxin emission

Abstract

The invention discloses an environment-friendly heat recovery system capable of reducing dioxin emission. The system involves a primary recovery furnace, a primary heat dissipation air inlet pipe, branch heat dissipation pipes, a primary heat dissipation air outlet pipe, a filter pipe, nozzles, a flue gas main inlet pipe, a primary flue gas outlet pipe, a secondary recovery furnace, a heat exchange pipe, a secondary heat dissipation liquid inlet pipe, a secondary heat dissipation liquid outlet pipe, a secondary flue gas inlet pipe and a secondary flue gas outlet pipe. According to the system,multi-stage cooling and heat recovery treatment is arranged, high-temperature flue gas is subjected to heat recovery treatment through the primary recovery furnace and the secondary recovery furnace,the temperature can be stored in gas and liquid, preparation of the high-temperature gas and the high-temperature liquid after heat recovery is achieved, the system is suitable for being used in otherfunctional areas of a factory, and the application range of heat recovery is wide. In the primary recovery furnace, cooling and heat recovery treatment is conducted on the high-temperature flue gas,and effective and rapid treatment of harmful substances in the high-temperature flue gas is achieved.

Description

technical field [0001] The invention relates to the technical field of air pollution control, in particular to an environment-friendly heat recovery system for reducing dioxin emissions. Background technique [0002] Waste incineration has become one of the main methods of urban waste disposal. In the past ten years, China has developed rapidly in the field of waste incineration. At the same time, dioxins in waste incineration flue gas have always been a common concern in all countries in the world. Dioxin is the general term for polychlorinated dibenzodioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs), and is considered to be "one of the most toxic poisons on earth". Dioxins are fat-soluble and can accumulate in organisms and human bodies. Long-term trace intake can cause cancer and teratogenicity. Porous carbon materials include activated carbon, activated carbon fibers, and carbon nanotubes. Due to their large specific surface area and unique and excellent pore st...

AI Technical Summary

Problems solved by technology

For the recovery of high-temperature gas containing dioxin, it is necessary to gradually process the gas step by step. The process flow is complicated and accompanied by the heat flow of high-temperature flue gas. Multiple devices circulate high-temperature flue gas to ensure the safety performance of the device. At the same time, higher requirements are put forward for the preparation of the treatment device. It is necessary to timely and efficiently cool down the high-temperature flue gas before performing the tail gas treatment process; at the same time, cooling the high-temperature flue gas will result in heat loss. A device capable of efficiently recovering flue gas heat

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