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Two-stage circulation partition desulfurizing tower

A technology of desulfurization tower and ring groove, which is applied in the field of desulfurization tower with two-stage circulation partition, can solve the problems of high resistance in the collection device area, and achieve the effects of improving utilization rate, reducing operating energy consumption, and high desulfurization efficiency

Inactive Publication Date: 2017-05-31
浙江菲达环保科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a two-stage circulation zone desulfurization tower, which can effectively solve the problem of large resistance in the existing single-tower double-cycle slurry collection device area

Method used

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Embodiment Construction

[0017] refer to figure 1 It is an embodiment of the two-stage circulating zone desulfurization tower of the present invention, including a tower body 1, a flue gas inlet 2 is arranged under the tower body 1, a flue gas outlet 3 is arranged at the top of the tower body 1, and a first-stage circulating slurry spray is arranged inside the tower body 1. Sprinkler system and secondary circulating slurry spray system.

[0018] The first-level circulating slurry spray system includes a first-level spray layer 12, a first-level slurry pool 4 and a first-level slurry circulation pump 15. The first-level spray layer 12 is located above the flue gas inlet 2 in the tower body 1, and the first-level spray layer The layer 12 is connected to the primary slurry pool 4 through the primary slurry circulation pump 15, and the primary gypsum slurry discharge pump 16 is connected to the bottom of the primary slurry pool 4 through pipelines for the discharge of by-products. Stage agitator 17.

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Abstract

The invention discloses a two-stage circulation partition desulfurizing tower which comprises a tower body, wherein a first-stage circulation slurry spray system is arranged at the lower part of the tower body; a second-stage circulation slurry spray system is arranged at the upper part of the tower body and comprises a second-stage spray layer; a ring groove bottom plate is arranged in the tower body below the second-stage spray layer; the projection of the ring groove bottom plate on the horizontal plane is of an annular shape; the outer edge of the ring groove bottom plate is fixed on the inner wall of the tower body; a vertically upward ring groove side plate is fixed on the inner edge of the ring groove bottom plate; the ring groove side plate, the ring groove bottom plate and the tower body inner wall form a ring groove; and a liquid discharge box for discharging the spray liquid in the ring groove is also fixed on the tower body. The two-stage circulation partition desulfurizing tower disclosed by the invention has the following advantages: a 'waterfall' slurry area is avoided, the operation energy consumption is effectively reduced, and the first-stage and second-stage circulation slurry spray systems are completely separated, so that the second-stage circulation slurry spray system with a high pH value has relatively high desulfurizing efficiency, and the first-stage circulation slurry spray system with a low pH value improves the absorbent utilization rate and byproduct quality.

Description

technical field [0001] The invention relates to a two-stage circulating partition desulfurization tower. Background technique [0002] In recent years, my country has increasingly stringent requirements for pollutant emissions from coal-fired units, and has introduced a series of major measures to strictly control air pollution emissions and strengthen atmospheric environmental governance. The National Development and Reform Commission, the Energy Bureau, and the Ministry of Environmental Protection jointly issued the "Fa Gai [2014] No. 2093" document in September 2014, requiring the completion of ultra-low emission and energy-saving transformation of coal-fired units before 2020, and requiring new construction in the eastern region. The air pollutant emission concentration of coal-fired units has basically reached the emission limit of coal-fired turbines, of which SO 2 Emission concentration is not more than 35mg / Nm 3 . At present, there are many desulfurization process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/77B01D53/50
CPCB01D53/507
Inventor 周冰赵琳周岳锋俞水林章涵蔡锡锋王少权周超炯
Owner 浙江菲达环保科技股份有限公司
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