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Wet-process desulphurization gypsum drying treatment device

A technology of drying treatment and wet desulfurization, which is used in drying gas arrangement, preliminary treatment to promote drying of solid materials, drying of solid materials, etc. Long-term operation, elimination of clogging and scaling, and obvious economic benefits

Active Publication Date: 2019-01-25
SHANGHAI TIANXIAO ENVIRONMENTAL PROTECTION ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, limestone / lime-gypsum wet desulfurization has begun to be applied to the desulfurization treatment of coke oven flue gas, steel sintering machine tail gas, steel pellet tail gas and various rotary kiln, mineral kiln, calcination, roasting and other tail gases. The raw materials are diverse and mixed, the combustion methods and working conditions are diverse and complex, and before entering the limestone / lime-gypsum wet desulfurization system, the dust removal effect is not good or the dust removal effect is poor, resulting in high dust concentration at the entrance of the limestone / lime-gypsum wet desulfurization system, containing tar or Asphalt dust is very high, and when encountering a lot of desulfurized gypsum, it cannot be dehydrated well, and the moisture content is too high, or even cannot be crystallized effectively, and the phenomenon of "loosening" directly occurs
[0004] In the prior art, such wet gypsum with high moisture content is directly transported and stacked. On the one hand, it increases the difficulty of handling. On the other hand, the wet gypsum with high humidity also affects the aesthetics of the factory environment.

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  • Wet-process desulphurization gypsum drying treatment device
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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] see Figure 1-Figure 2 , a wet desulfurization gypsum drying treatment device, including a drying cylinder, the bottom of the drying cylinder is provided with a broken arch triangle plate 102, and an agitator is arranged above the arch broken triangle plate; the side wall of the drying cylinder is located at the height of the agitator. There is a high-temperature flue gas inlet, and a wet gypsum inlet is provided above the high-temperature flue gas inlet; a high-temperature flue gas outlet is provided on the top of the drying cylinder, and the high-temperature flue gas outlet is connected to the dust removal device; the flue gas entering the high-temperature flue gas inlet is tar or Pitch high temperature coke oven flue gas.

[0027] In this example, see figure 1 , the drying cylinder is located below the high-temperature flue gas outl...

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Abstract

The invention relates to a wet-process desulphurization gypsum drying treatment device which comprises a drying cylinder. The bottom of the drying cylinder is provided with a base plate arch-breakingtriangular plate, a stirrer is arranged above the arch-breaking triangular plate, a high-temperature smoke inlet is formed in the position, located at the height of a stirrer, of the side wall of thedrying cylinder, and a wet gypsum inlet is formed above the high-temperature smoke inlet, the top of the drying cylinder is provided with a high-temperature smoke outlet, and the high-temperature smoke outlet is connected with a dust removal device. Smoke entering the high-temperature smoke inlet contains tar or pitch high-temperature coke oven smoke. The wet-process desulphurization gypsum dryingtreatment device cooperates with high-temperature smoke to dry and dewater wet gypsum with the moisture content higher than 15%, meanwhile moisture and dust are both discharged outward together withthe high-temperature wet smoke, then dust is collected, and two purposes are achieved in one. Existing high-temperature coke oven smoke is utilized, energy is saved. Meanwhile, the zero-discharge function of wastewater is achieved.

Description

technical field [0001] The invention relates to a wet gypsum drying treatment device, in particular to a wet desulfurization gypsum drying treatment device. Background technique [0002] Limestone / lime-gypsum wet desulfurization is a widely used desulfurization method with high efficiency, reliability, stability, safety and low operating cost. It has long been the most important method for flue gas desulfurization of thermal power coal-fired boilers. Due to the single fuel, sufficient boiler combustion, and high dust collection efficiency of subsequent dust removal equipment, after entering limestone / lime-gypsum wet desulfurization, the gypsum slurry formed after full oxidation is dehydrated through various forms of vacuum or plate and frame, and the gypsum contains water. The rate is generally around 10%. [0003] At present, limestone / lime-gypsum wet desulfurization has begun to be applied to the desulfurization treatment of coke oven flue gas, steel sintering machine tai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B1/00F26B3/08F26B21/14F26B25/04F26B25/00
CPCF26B1/00F26B3/08F26B21/14F26B25/00F26B25/04Y02P70/10
Inventor 张强杨宁费宇斌施继超
Owner SHANGHAI TIANXIAO ENVIRONMENTAL PROTECTION ENG CO LTD
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