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Desulfurization system capable of efficiently catching aerosol in desulfurized clean flue gas

A desulfurization system and aerosol technology, applied in the direction of ammonium sulfate, combined device, and dispersed particle separation, can solve the problems of aerosol and low recovery rate of ammonium sulfate, so as to improve the recovery rate and solve the problem of low recovery rate , the effect of simple operation

Inactive Publication Date: 2013-01-16
JIANGSU HEYICHANG ENVIRONMENTAL PROTECTION ENG & TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a desulfurization system for efficiently capturing aerosols in the clean flue gas after desulfurization in view of the low recovery rate of ammonium sulfate existing in the existing ammonia desulfurization process and the existence of aerosols in the discharged flue gas

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  • Desulfurization system capable of efficiently catching aerosol in desulfurized clean flue gas
  • Desulfurization system capable of efficiently catching aerosol in desulfurized clean flue gas
  • Desulfurization system capable of efficiently catching aerosol in desulfurized clean flue gas

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] Such as figure 1 As shown, a system for efficiently capturing aerosols in the clean flue gas after desulfurization, the lower part of the desulfurization tower is the oxidation section, the middle part is the main absorption section, and the upper part is the washing, purification, and demisting section.

[0017] Main absorption section: High-temperature flue gas enters the desulfurization tower from the smoke inlet on the side of the desulfurization tower T101, and at least one spray layer is installed in the desulfurization tower and above the smoke inlet (it can be used in specific implementation) figure 1 The three-layer structure shown in, figure 1 The middle three spray layers are X-103A, X-103B, X-103C from the bottom to the last), according to the liquid-gas ratio of 1-3:1 (the liquid flow is in L / h, and the gas is in m3 / h is the u...

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Abstract

The invention relates to a desulfurization system capable of efficiently catching aerosol in desulfurized clean flue gas. A flue gas inlet is formed on the lower side wall of a desulfurization tower, and a chimney is arranged on the top of the desulfurization tower. The system is characterized in that at least two spraying layers are arranged on the upper part of the flue gas inlet in the desulfurization tower; a slurry pond is arranged below the flue gas inlet in the desulfurization tower; a stirrer and a device for increasing oxygen quantity are arranged in the slurry pond; at least two stages of demisters are arranged on the upper parts of the spraying layers; and an efficient aerosol catcher is arranged between the upper parts of the slurry spraying layers and the lower parts of the demisters in the desulfurization tower and consists of a washing water spraying layer arranged on the upper part and a washing water collection device which is arranged on the lower part and has a multi-layer shutter structure. By the system, the recovery rate of an ammonium sulfate product is improved.

Description

technical field [0001] The invention belongs to the field of flue gas desulfurization, and in particular relates to an aerosol capturing device for capturing sulfur dioxide aerosol in clean flue gas after ammonia desulfurization and improving the recovery rate of ammonium sulfate. Background technique [0002] At present, flue gas, especially coal-fired boiler flue gas, is one of the most important sources of air pollution and has become an important object of environmental governance. In 2011, my country's SO 2 The annual emission is 11.141 million tons (down 1.74% from the previous year), greatly exceeding the self-purification capacity of the environment, and the total emission ranks first in the world. The main component of flue gas is SO 2 , SO 2 It should be a sulfur resource with great value, but it has become a pollution source with great environmental hazards. Among the existing flue gas desulfurization and purification technologies, ammonia desulfurization can ...

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Application Information

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IPC IPC(8): B01D53/78B01D53/50B01D50/00C01C1/24
Inventor 刘新亚李承泉邱向东徐亚琳
Owner JIANGSU HEYICHANG ENVIRONMENTAL PROTECTION ENG & TECH
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