Microwave vacuum pyrolysis method for combustible solid waste

A solid waste, microwave vacuum technology, applied in the combustion method, microwave heating, combustion type and other directions, can solve the problems of poor safety and deflagration, and achieve the effect of shortening the combustion time and sufficient combustion

Inactive Publication Date: 2020-01-14
中国人民解放军火箭军研究院核技术研究所
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  • Claims
  • Application Information

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Problems solved by technology

[0007] However, a large amount of gas will be produced during the pyrolysis process, such as methane, hydrogen, carbon monoxide, etc. If it is not handled properly, it will deflagrate during the heating process, and the safety is poor

Method used

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  • Microwave vacuum pyrolysis method for combustible solid waste
  • Microwave vacuum pyrolysis method for combustible solid waste

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with specific embodiments.

[0023] A microwave vacuum pyrolysis method for combustible solid waste, comprising the steps of:

[0024] (1) Vacuum treatment of combustible solid waste to reach a state of negative pressure, and the degree of vacuum is kept at least -30KPa.

[0025] (2) Heating the combustible waste after vacuum treatment. The heating method adopts microwave heating to 580-640 ℃. During the heating process, the vacuum degree should always be maintained to reach -30KPa to -70KPa, and the gas generated by pyrolysis should be heated. It is extracted and discharged after being purified by the flue gas purification system; the heating time varies according to the weight of the combustible solid waste. The reference value is: the heating time of 2 kg of pure cotton cloth is 22 minutes.

[0026] (3) Stop heating, and the temperature of combustible solid waste will continue to rise. De...

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Abstract

The invention aims at providing a microwave vacuum pyrolysis method for combustible solid waste. The method comprises the following steps that (1) the combustible solid waste is vacuumized; (2) the vacuumized combustible waste is heated; (3) heating is stopped; (4) ventilation is conducted, so that the product after being subjected to pyrolysis burns, the temperature is quickly increased during burning, and after the temperature is lowered, burning is basically completed. The microwave vacuum pyrolysis method has the advantages that by applying the method, the burning time is greatly shortened, burning is more sufficient, the ratio of volume reduction to weight reduction is much larger than 40, and the smoke quality meets the demand of GB 18484-2001 hazardous waste burning pollution control standard regulation.

Description

technical field [0001] The invention belongs to a waste treatment method, and in particular relates to a microwave vacuum pyrolysis method for combustible solid waste. A harmless treatment method for incineration in a ventilated state. Background technique [0002] Pyrolysis refers to the thermal degradation of materials in an oxygen-free or anoxic environment. It is a complex thermochemical process in which endothermic and exothermic reactions are interlaced, and finally three-phase components such as gas, liquid, and solid are generated. At present, the more common heating method is mainly electric heating pyrolysis, which has low thermal efficiency and complicated equipment composition and operation. [0003] A comparison of the various types of pyrolysis technologies currently available is shown in Table 1. [0004] Table 1 Comparison of various pyrolysis technologies [0005] Pyrolysis method flue gas quality final product Device volume operate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/027H05B6/64
CPCF23G5/027F23G5/0276H05B6/64
Inventor 左莉李霄李藐罗中兴张开邓云跃陈显波袁伟赵锋涛
Owner 中国人民解放军火箭军研究院核技术研究所
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