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Exhaust gas waste heat gradient utilization system for small-sized living garbage pyrolysis and gasification

A technology for domestic waste, pyrolysis and gasification, applied in incinerators, combustion types, reduction of greenhouse gases, etc., can solve the problems of low exhaust gas temperature, uneven heating, white fog phenomenon, etc. The effect of improving stability

Active Publication Date: 2017-12-15
湖南省环境保护科学研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention aims to solve the problems of uneven drying and heating of household garbage, low temperature of exhaust gas, high humidity, and common white mist phenomenon, and provides a cascade utilization system for residual heat of household garbage pyrolysis gasification flue gas

Method used

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  • Exhaust gas waste heat gradient utilization system for small-sized living garbage pyrolysis and gasification
  • Exhaust gas waste heat gradient utilization system for small-sized living garbage pyrolysis and gasification

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Embodiment Construction

[0028] see figure 1 and figure 2 , the cascade utilization system for waste heat of flue gas from pyrolysis and gasification of small-scale domestic waste includes a pyrolysis furnace 16, and a garbage drying pipeline 3 is arranged in the pyrolysis furnace 16; The outlet of the flue gas pipeline 2 is connected, and the inlet of the flue gas pipeline 2 is communicated with the second combustion chamber 1 of the pyrolysis furnace 16; the flue gas outlet of the garbage drying pipeline 3 is connected with the flue gas inlet of the cooling pipe sleeve 4; The flue gas outlet of the cooling pipe sleeve 4 is connected with the flue gas inlet of the cyclone dust removal cooling device 5; the flue gas outlet of the cyclone dust removal cooling device 5 is connected with the flue gas inlet of the heat exchanger 6; the flue gas inlet of the heat exchanger 6 The gas outlet is connected with the flue gas inlet of the biomass filler detarring device 7; the flue gas outlet of the biomass fi...

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Abstract

The invention discloses an exhaust gas waste heat gradient utilization system for small-sized living garbage pyrolysis and gasification. The exhaust gas waste heat gradient utilization system comprises a pyrolysis furnace, an exhaust gas cooling casing pipe, a cyclone dust removing and cooling device, a heat exchanger, a biomass filler tar-removal device, an alkali liquor water-washing device, a smoke remover, a tube type exhaust gas reheater, a chimney discharging unit and the like, wherein a garbage drying pipeline is arranged in the pyrolysis furnace. Through full utilization of applicability of exhaust gas of different temperatures and cooling water, effective combination of exhaust gas reheat utilization and living application is achieved, the heating efficiency is improved, meanwhile, the temperature and diffusion capacity of discharged exhaust gas are improved, the risk of haze is effectively reduced, and the environment benefits are remarkable.

Description

technical field [0001] The invention relates to a cascaded utilization system of residual heat of flue gas from pyrolysis gasification of small domestic garbage. Background technique [0002] With the rapid development of social economy and the progress of science and technology, my country's domestic waste pyrolysis gasification technology is becoming more and more popular due to its advantages such as no auxiliary fuel, less pollutant discharge, low burning rate, low processing cost, and small footprint. Gradually replace the original sanitary landfill, composting, waste incineration and other technologies. The tail gas after pyrolysis and gasification of domestic waste contains acid gases such as sulfur dioxide, hydrogen chloride, and nitrogen oxides, so the wet flue gas treatment system is used, resulting in the temperature of the exhausted flue gas at about 50°C and the humidity at 200g / Nm 3 around, while the average humidity of the atmosphere in my country is only 9g / N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/46F23G5/04F23G5/027F23J15/06
CPCF23G5/027F23G5/04F23G5/46F23J15/06Y02E20/30
Inventor 邱亚群李二平熊如意胡青蔡金玲陈浩云
Owner 湖南省环境保护科学研究院
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