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A zero-discharge treatment method and system for desulfurization wastewater adapted to multiple working conditions

A technology for desulfurization wastewater and treatment method, which is applied in the fields of gaseous discharge wastewater treatment, water/sewage treatment, heating water/sewage treatment, etc., which can solve the problem of insufficient sources of desulfurization wastewater, failure to achieve zero discharge of desulfurization wastewater, and insufficient operating conditions. And other issues

Active Publication Date: 2021-09-14
XIAN THERMAL POWER RES INST CO LTD +3
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Problems solved by technology

However, the operating conditions considered are not comprehensive enough. When the SO in the flue gas 2 When the concentration is not high, the drainage capacity of the gas-liquid separation tank is small, which will cause the problem of insufficient source of desulfurization wastewater; and the desulfurization wastewater in this specification is subsequently treated with dosing, clarification and concentration, and zero discharge of desulfurization wastewater has not been realized. and water quality requirements are not as strict as zero discharge of desulfurization wastewater

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  • A zero-discharge treatment method and system for desulfurization wastewater adapted to multiple working conditions

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Embodiment Construction

[0033] The present invention is described in further detail below in conjunction with accompanying drawing:

[0034] refer to figure 1 , the zero-discharge treatment system for desulfurization wastewater adapted to multiple working conditions according to the present invention includes a boiler 1, a dust collector 4, a desulfurization absorption tower 6, a chimney 7, a gypsum cyclone 9, a filtrate tank 13, a gypsum dehydrator 10, a gas-liquid Separation tank 11, waste water collection tank 15, waste water concentration tower 18, thick slurry tank 22, clarifier 24, spray water tank 25 and waste water drying tower 27; the tail flue of boiler 1 is provided with an economizer 2 along the flue gas flow direction And the air preheater 3, the tail flue of the boiler 1 and the bottom outlet of the waste water drying tower 27 are all connected with the inlet of the dust collector 4, and the outlet of the dust collector 4 is connected with the flue gas inlet of the waste water concentra...

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Abstract

The invention discloses a zero-discharge treatment method and system for desulfurization wastewater suitable for multiple working conditions, including a boiler, a dust collector, a desulfurization absorption tower, a chimney, a gypsum cyclone, a filtrate water tank, a gypsum dehydrator, a gas-liquid separation tank, and a waste water. Collection box, waste water concentration tower, thick pulp box, clarifier, spray water tank and waste water drying tower, the system and method can adapt to the treatment of various flue gas components, and have the characteristics of high reliability, energy saving and economy.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment of wet flue gas desulfurization systems, and relates to a zero-discharge treatment method and system for desulfurization waste water adapting to multiple working conditions. Background technique [0002] The wet flue gas desulfurization process is widely used in the field of flue gas pollutant treatment technology. The sulfur dioxide SO in the flue gas 2 It is absorbed by the alkaline absorbent in the desulfurization absorption tower to form desulfurization gypsum slurry. After the gypsum slurry passes through the gypsum cyclone and gypsum dehydrator to remove most of the water, it becomes gypsum solid and is transported for resource utilization. Acidic pollutants such as hydrogen chloride HCl in the flue gas are absorbed together in the desulfurization absorption tower, and the chloride ion Cl - Exists in the form of desulfurization slurry, Cl - It is difficult to form sediments w...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23J15/02F22D1/36B01D53/50B01D53/68B01D53/80C02F1/04C02F1/16
CPCF23J15/022F23J15/02F22D1/36C02F1/048C02F1/16B01D53/80B01D53/50B01D53/68B01D2258/0283C02F2103/18F23J2215/20F23J2215/30B01D53/502B01D2251/404B01D2257/2045B01D2257/30C02F9/00C02F1/38C02F1/004C02F2101/101F23J15/04F23J2219/50F23J15/006B01D21/267B01D53/1425B01D53/1481B01D53/18B01D53/96B01D2251/608B01D2257/204
Inventor 苏立新程阳丹慧杰茅义军李海滨牛国平何育东陈丰陈常青牛拥军雷鸣余福胜邵丽华王定帮王少亮李楠邹强宇李兴华郭浩然石振晶孟令海余昭宦宣州何仰鹏吴晓龙王韶晖
Owner XIAN THERMAL POWER RES INST CO LTD
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