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Household garbage coupling fluidized bed hierarchical pyrolytic gasifier

A technology of pyrolysis and gasification of domestic waste, which is applied in the gasification of granular/powdered fuels, the manufacture of combustible gases, and the petroleum industry. It can solve the problems of difficult phenol water, high utilization of waste resources, and low calorific value of gases

Active Publication Date: 2013-03-20
田原宇
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Its advantages are rapid capacity reduction and complete high-temperature harmlessness. It occupies a small area and has heat recovery. However, due to the presence of oxygen, chlorine-containing organic substances in garbage will inevitably produce highly toxic dioxins that are difficult to decompose. , becoming a bottleneck restricting the application of waste incineration
[0004] Domestic waste pyrolysis is a newly developed technology in recent years. It has a high utilization rate of waste resources and no generation of dioxins. However, the composition of oil products is complex, it is difficult to use, and it produces difficult-to-handle phenol water. In addition, fixed-bed technology is mainly used Difficult to achieve large-scale production; domestic waste gasification has a high utilization rate of waste resources, less dioxin formation, but the gas has a low calorific value, tar needs to be removed, and it is difficult to use. At present, it is difficult to achieve large-scale production with fixed bed technology.

Method used

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  • Household garbage coupling fluidized bed hierarchical pyrolytic gasifier

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Embodiment Construction

[0017] The domestic waste coupled fluidized bed classification pyrolysis gasifier is composed of a deironing crusher (15), a sleeve drum dryer (16), a coupled fluidized bed (1), a gas distributor (2), and an air inlet pipe ( 3), ash discharge pipe (4), pulverized coal inlet (5), primary gas-solid separator (6), coarse ash circulation return pipe (7), returner (8), secondary gas-solid The separator (9), the fine ash circulating return pipe (10), the entrained bed (11), and the gas outlet (12) are composed, and it is characterized in that the front end of the coupled fluidized bed (1) is sequentially provided with a deironing crusher (15) ) And sleeve type tumble dryer (16), the bottom of the coupled fluidized bed (1) is equipped with a gas distributor (2), an air inlet pipe (3) and an ash discharge pipe (4), below the gas distributor (2) An air inlet pipe (3) is provided, and the ash discharge pipe (4) is arranged in the center of the gas distributor (2) or triangularly distribu...

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Abstract

The invention provides household garbage coupling fluidized bed hierarchical pyrolytic gasifier, comprising a deferrization pulverizer, a tubular cylinder drying machine, a coupling fluidized bed, a gas distributor, an ash discharge tube, an air intake pipe, a material-feeding port, a first-stage gas-solid separator, a coarse ash cycle refeed pipe, a refeeder, a second-stage gas-solid separator, a fine ash cycle refeed pipe, an entrained-flow bed and a gas outlet. The deferrization pulverizer and the tubular cylinder drying machine are disposed at the front end of the coupling fluidized bed; the gas distributor and the ash discharge tube are disposed at the bottom of the coupling fluidized bed; the entrained-flow bed is disposed at a position 1,000-2,000 mm away from the bottom of the coupling fluidized bed; the material-feeding port is disposed at a position 500-3,000 mm away from the bottom of the entrained-flow bed; and the first-stage gas-solid separator and the second-stage gas-solid separator are disposed at the top of the entrained-flow bed; the coarse particle ash cycle refeed pipe of the first-stage gas-solid separator is connected with the bottom of the combined circulating fluidized bed through the refeeder; and the fine particle cycle refeed pipe of the second-stage gas-solid separator is connected with the spiral-flow type entrained flow bed through the refeeder.

Description

1. Technical Field [0001] The invention provides a staged pyrolysis gasifier coupled with a fluidized bed for household garbage, which belongs to the field of environmental protection equipment. 2. Background technology [0002] At present, the treatment methods of municipal waste in various countries in the world mainly include classified recycling, landfill, composting and incineration, cracking and gasification. Landfill treatment requires a large amount of land. At the same time, the harmful components in the garbage will also cause serious pollution to the atmosphere, soil and water sources, not only destroying the ecological environment, but also seriously endangering human health. Composting requires sorting and classification of the garbage, which requires a high organic content. Moreover, the compost treatment cannot be reduced, and a large amount of land is still required. [0003] The essence of incineration is to oxidize organic waste into inert gaseous matter and ino...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/56C10J3/66
Inventor 田原宇乔英云王林
Owner 田原宇
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