System and method for continuous microwave hydrothermal treatment of dioxins in incineration fly ash

A microwave hydrothermal method and fly ash incineration technology, applied in the field of fly ash disposal, can solve the problems of temperature and mechanical alternating stress that cannot meet the requirements of processing materials, difficult to accurately measure the relevant parameters of the reaction system, and high field strength requirements. Problems such as the inability to realize working conditions, to achieve the effect of high resource utilization potential, easy continuous control, and small footprint
CN113521637BActive Publication Date: 2022-06-24宝武集团环境资源科技有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
宝武集团环境资源科技有限公司
Publication Date
2022-06-24

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Abstract

The invention discloses a system and method for treating dioxin in incineration fly ash by continuous microwave hydrothermal method, wherein the system for treating dioxin in incineration fly ash by continuous microwave hydrothermal method includes a heat exchange device and a buffer stirring tank , circulation pump, microwave reaction device; the microwave reaction device includes a microwave safety shielding unit, a slurry circulation unit, a microwave irradiation unit and a control unit; the feed port of the slurry circulation unit is connected with a buffer stirring tank, and the slurry circulation unit The discharge port is connected with the heat exchange device; the pipeline between the microwave reaction device and the heat exchange device is provided with a circulation loop communicated with the buffer stirring tank. The invention is based on the traditional hydrothermal treatment and implants high-parameter microwave treatment technology, which can not only remove organic pollutants such as dioxins in incineration fly ash, but also realize large-scale continuous treatment, so that the treatment of dioxins in incineration fly ash Continuous process, safe, convenient, reliable effect, small footprint, cost-effective.
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Description

technical field

[0001] The invention belongs to the field of fly ash disposal, and in particular relates to a system and method for treating dioxins in incineration fly ash by a continuous microwave hydrothermal method. Background technique

[0002] In my country's industrial and municipal solid waste pollution control work, the incineration process is a treatment process with a high proportion of weight. The fly ash generated during the incineration process contains a large amount of heavy metals and dioxin-like organic pollutants. Therefore, the incineration fly ash must be disposed of harmlessly and utilized as a resource.

[0003] At present, one of the major technical difficulties in the resource utilization of incineration-like fly ash is the safe, continuous, reliable and efficient removal of dioxin-like organic pollutants. Small and micro experimental equipment, but they are all batch-sequential, discontinuous devices and corresponding systems, and are limited to a r...

Claims

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