Device for utilizing desulfurization waste liquid and operation method thereof

A technology of desulfurization waste liquid and operation method, applied in separation methods, steam generation methods, chemical instruments and methods, etc., can solve problems such as environmental pollution and poor sales, and achieve the effect of avoiding secondary pollution

Pending Publication Date: 2020-06-05
禹勤工程设计咨询有限公司
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Problems solved by technology

[0004] A large amount of saline waste liquid produced in the desulfurization process of coke oven gas, its main components are thiocyanate, thiosulfate, sulfate, etc., among which thiocyanate has strong toxicity, the desulfurization liquid is harmless if it is not treated Direct discharge after chemical treatment will cause seri

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  • Device for utilizing desulfurization waste liquid and operation method thereof
  • Device for utilizing desulfurization waste liquid and operation method thereof
  • Device for utilizing desulfurization waste liquid and operation method thereof

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Embodiment Construction

[0060] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0061] refer to Figure 1-Figure 7 ,in, figure 1 This is the elevation of the drying and curing and exhaust gas section of the device, which mainly reflects the relationship and relative position of each equipment floor, as well as the direction of main materials in the section. The structure of this area is a two-story frame structure above the ground, and an underground regulating pool is set underground. The produced products are delivered to the sulfur burning section through the conveyor 15 after being output by the second dryer 2 . This section is connected with the sulfur burning section.

[0062] figure 2 This is the elevation of the pretreatment gas section of the device, which mainly reflects the relationship and relative position of each equipment floor, as well as the direction of main materi...

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Abstract

The invention discloses a device for utilizing desulfurization waste liquid and an operation method thereof. The device comprises a pretreatment adjusting section, a drying curing and tail gas section, a sulfur burning section, a cooling section, a washing section, a conversion absorption section and a tail gas treatment section. The invention further provides an operation method of the device forutilizing the desulfurization waste liquid, wherein comprehensive treatment is conducted on the desulfurization liquid and sulfur foam generated in the coking HPF wet desulfurization process, so thatthe waste is turned into resources, internal circulation is achieved, secondary pollution is eradicated, the production cost is saved, automatic control is achieved, and energy consumption is reduced. Sulfuric acid is prepared through the two-conversion and two-absorption process, a vanadium catalyst is used, a converter uses a refractory fiber adhesive, a ceramic fiber plate and a refractory fiber reinforced coating, the catalytic conversion rate of sulfur dioxide is increased, and the conversion rate is larger than or equal to 99.75%.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of desulfurization waste liquid, and in particular relates to a device for utilizing desulfurization waste liquid and an operation method thereof. Background technique [0002] The existing coking gas is desulfurized by the HPF wet liquid phase catalytic method using ammonia as the alkali source, and a large amount of sulfur foam and desulfurization liquid will be generated during the desulfurization process. Most domestic sulfur foams recover wet sulfur by pressure filtration, or recover solid sulfur by melting sulfur kettles. Due to the high content of impurities in the recovered sulfur, comprehensive utilization is very difficult, and the sales of sulfur are greatly restricted. The desulfurization process contains a large amount of harmful substances, the main components are thiocyanate, thiosulfate, sulfate, etc. Among them, thiocyanate has strong toxicity. If the desulfuriza...

Claims

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Application Information

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IPC IPC(8): C01B17/74F22B1/00F26B21/00F28B9/08B01D53/78
CPCB01D53/78C01B17/74F22B1/00F26B21/001F28B9/08
Inventor 沈鑫
Owner 禹勤工程设计咨询有限公司
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