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Anti-scaling system and method for wet deslagging system of thermal power plant

A thermal power plant and regeneration system technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, gaseous discharge wastewater treatment, etc., can solve the problems of low cost, reduce production, solve scaling blockage, reduce The effect of lime dosage

Pending Publication Date: 2020-03-27
XIAN THERMAL POWER RES INST CO LTD
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a system and method for anti-scaling of the wet slag removal system in thermal power plants. Disposal of recycled wastewater from the factory, and the cost is low

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  • Anti-scaling system and method for wet deslagging system of thermal power plant

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Embodiment Construction

[0020] The present invention is described in further detail below in conjunction with accompanying drawing:

[0021] refer to figure 1 , the anti-scaling system of the thermal power plant wet slag removal system according to the present invention includes a controller, a fine treatment regeneration system 1, a first online pH meter 3, a fine treatment regeneration acidic wastewater delivery valve 15, a finishing treatment regeneration alkaline wastewater delivery valve 13 , chemical regeneration system 2, second online pH meter 4, chemical regeneration acidic wastewater delivery valve 16, chemical regeneration alkaline wastewater delivery valve 14, desulfurization system 12, slag removal system replenishment pool 5, slag removal system replenishment pool transfer pump M3, Slag removal machine 7, boiler 6, slag overflow pool 8, concentration pool 9, clean water pool 10 and the third online pH meter; the outlet of the fine treatment regeneration system 1 is divided into two chan...

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Abstract

The invention discloses an anti-scaling system and method for a wet deslagging system of a thermal power plant. The anti-scaling system comprises a controller, a fine treatment regeneration system, afirst online pH meter, a fine treatment regeneration acidic wastewater delivery valve, a fine treatment regeneration alkaline wastewater delivery valve, a chemical regeneration system, a second onlinepH meter, a chemical regeneration acidic wastewater delivery valve, a chemical regeneration alkaline wastewater delivery valve, a desulfurization system, a slag removal system water replenishing tank, a slag removal system water replenishing tank delivery pump, a slag conveyor, a boiler, a slag overflow tank, a concentration tank, a clean water tank and a third online pH meter, According to the system and the method, the scaling problem of pipelines and equipment of the wet deslagging system can be prevented and the disposal problem of regenerated wastewater of the whole plant can be solved and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of boiler slag removal, and relates to a scale prevention system and method for a wet slag removal system in a thermal power plant. Background technique [0002] The slag is the melt produced after the high-temperature combustion of the boiler. The slag contains basic oxide substances such as calcium oxide. After the slag enters the wet slag removal system, the alkaline substances such as calcium oxide are dissolved in the water. The pH of slag water increases gradually, Ca 2+ The concentration gradually increases, which will inevitably cause HCO in the process of continuous recycling of slag water. 3 - to CO 3 2- conversion, resulting in the generation of CaCO in the wet slag removal system 3 scaling problem. With the increasingly stringent national environmental protection requirements and the promulgation of "Water Ten Measures" and other policies in 2015, zero discharge of wastewater from power pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F103/18
CPCC02F9/00C02F2103/18C02F1/66C02F1/04C02F1/28
Inventor 杨阳黄琼胡大龙许臻
Owner XIAN THERMAL POWER RES INST CO LTD
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