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System for transforming waste combustible material recovered from building rubbish into clean gas

A construction waste and clean technology is applied in the system field of converting into clean gas, which can solve the problems of high catalytic reaction temperature, poor catalytic effect, and high content of harmful substances in the exhaust gas, and achieve the effects of low cost and large output.

Active Publication Date: 2015-04-22
北京国佳新创科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] However, as mentioned above, in the above-mentioned prior art, it is mainly aimed at domestic waste, and there is a lack of processes and devices for gasifying combustibles of construction waste with large composition differences. In the existing treatment methods, there is still There is a problem of generating a large amount of tar. The conventional tar decomposition catalyst used has poor catalytic effect and high catalytic reaction temperature. In addition, the content of harmful substances in the tail gas in the conventional process is relatively high

Method used

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  • System for transforming waste combustible material recovered from building rubbish into clean gas

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Embodiment 1

[0043] The present invention will be further described below in conjunction with the accompanying drawings.

[0044]The present invention is a clean gas conversion system for waste combustibles recovered from construction waste. The system includes a comprehensive raw material processing unit 1, a temperature-controlled cracking furnace 2, a primary purifier 3, a secondary purifier 4, a primary separator 5, and a secondary purifier. Stage separator 6, Roots air blower 7, three-stage purifier and the connecting pipeline 8 therein, the outer wall of the described temperature-controlled cracking furnace is provided with a spiral flue, and the described flue is arranged on the temperature-controlled cracking furnace 2 The input end of the thermostat is connected, the output end of the thermostat is connected to the primary purifier 3, the front end of the secondary purifier 4 is connected to the primary purifier 3, the rear end is connected to the primary separator 3, and the secon...

Embodiment 2

[0047] Use the system of Example 1 to perform clean gas conversion of combustibles recovered from construction waste, wherein the waste combustibles recovered from construction waste are cracked and gasified in a temperature-controlled cracking furnace, followed by primary purification and secondary purification , and then perform primary separation and secondary separation. After the secondary separation, the tail gas is drawn out by a fan for tertiary purification. The construction waste is waste from building demolition, and its combustibles include wood products, plastics, textiles and the like. The catalyst used in the cracking process includes a carrier and active components loaded on the carrier, wherein the carrier is fly ash, and the catalytically active components are NiO, CuO, Fe 2 o 3 A composite oxide of three oxides, the catalyst is expressed as NiO-CuO-Fe 2 o 3 / fly ash, wherein the molar ratio of Ni, Cu, Fe is 5:1:15, based on the total weight of the cataly...

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Abstract

The invention relates to a system for transforming a waste combustible material recovered from building rubbish into clean gas. The system is characterized in that the waste combustible material recovered from the building rubbish is subjected to pyrolysis gasification in a temperature-controlled pyrolysis furnace, then subjected to primary purification and secondary purification and then subjected to primary separation and secondary separation; after the secondary separation, a tail gas is led out by using an air blower to be subjected to tertiary purification. The invention also discloses a process for gasifying the combustible material from the building rubbish. The system and process which are disclosed by the invention have the advantages of very high pertinence on the combustible material from the building rubbish, low tar content and low content of harmful substances contained in the tail gas.

Description

technical field [0001] The present invention relates to a system for reusing waste combustibles from construction waste, in particular converting them into clean gas. technical background [0002] In recent years, with the continuous increase of city scale and the continuous deepening of urbanization construction, the amount of waste generated is increasing day by day. However, many insurmountable problems exposed by traditional treatment methods have made waste pyrolysis treatment technology more and more popular. People are concerned, especially for municipal solid waste with high content such as kitchen waste, plastic, rubber, etc., the more valuable its pyrolysis and gasification process can be. Due to the various components of municipal solid waste, the pyrolysis and gasification process is quite complicated. In the process of pyrolysis and gasification, not only large molecules are cracked into small molecules, but also small molecules may be aggregated into larger mol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/00C10B57/06C10K1/00
CPCC10B53/00C10B53/06C10B57/06C10J3/00C10J3/84C10J2200/06C10J2300/0946C10J2300/0986C10J2300/1603C10K1/00C10K1/002
Inventor 张颖王以峰刘喜进孟德义吴建民葛海卿
Owner 北京国佳新创科技发展有限公司
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