Device and method for moisture recovery and gypsum rain control in wet desulphurization flue gas of thermal power plant

A technology for wet desulfurization and thermal power plant is applied in the field of moisture recovery and gypsum rain treatment devices in the wet desulfurization flue gas of thermal power plants. degree, the effect of reducing operating costs

Active Publication Date: 2013-10-09
BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above methods all require additional special devices, which increases the operating cost, equipment complexity and on-site construction difficulty.

Method used

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  • Device and method for moisture recovery and gypsum rain control in wet desulphurization flue gas of thermal power plant
  • Device and method for moisture recovery and gypsum rain control in wet desulphurization flue gas of thermal power plant

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Embodiment 1

[0026] See attached figure 1 , the lower part of the chimney inner cylinder 5 is short cylindrical, the upper part is high cylindrical, and the short cylindrical and high cylindrical are connected by a conical form. The hot flue gas 1 enters from the lower part of the high cylinder through the flue 2; a plurality of air inlets 3 are arranged on the wall of the short cylinder part of the chimney, and the air enters the chimney from the air inlet 3, and a conical air inlet 3 is installed above the air inlet 3 Surrounding eaves 4, the surrounding eaves 4 are the part extending downwards from the conical surface of the conical part of the chimney, the size of the air inlet 3 is adjustable, and the flow rate of the incoming air is adjusted by adjusting the size of the air inlet 3. Air is sucked into the flue and / or chimney through the self-extraction force of the flue and / or chimney, the air is mixed with the flue gas, the temperature of the flue gas is lowered, the water vapor in ...

Embodiment 2

[0028] See attached figure 2 , the flue 2 includes a wet desulfurization absorption tower 1, the tower top is conical, and the tower wall is vertical; a vertical flue is installed on the conical tower top, and the diameter of the vertical flue is smaller than that of the wet desulfurization absorption The diameter of the tower makes the flue gas flow out from the top of the wet desulfurization absorption tower. A plurality of air inlets 3 are arranged on the wall surface of the upper part of the vertical tower wall, and the air enters the wet desulfurization absorption tower 1 from the air inlets 3, and a conical eaves 4 are installed above the air inlets 3, and the enclosure The eaves 4 are the part extending downward from the conical surface of the conical tower top. The size of the air inlet 3 is adjustable, and the flow rate of the incoming air is adjusted by adjusting the size of the air inlet 3 . Air is sucked into the flue and / or chimney through the self-extraction f...

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Abstract

The invention provides a device and a method for moisture recovery and gypsum rain control in wet desulphurization flue gas of a thermal power plant. According to a process, air is sucked into a flue and/or chimney by utilizing the specially designed flue and/or chimney through an own pullout force of the flue and/or chimney, and mixed with flue gas to reduce the temperature of the flue gas and enable water vapor in the flue gas to be condensed into liquid water which is recovered or reduce the condensation of the water vapor in the flue gas in the chimney. By using the device and the method, under the condition of not needing to arrange a separate device, the reduction of the water vapor in the recovered flue gas and a function of removing the liquid water carried in the flue gas at an outlet of the chimney are realized, meanwhile, the formation of the gypsum rain is inhibited, and the operation cost and equipment complexity are reduced.

Description

technical field [0001] The invention relates to a device and method for recovering moisture in flue gas, in particular to a device and method for recovering moisture in wet desulfurization flue gas of a thermal power plant and controlling gypsum rain. [0002] Background technique [0003] The water consumption of thermal power plants is huge, which is about half of the total industrial water consumption in the country. At present, the water used in thermal power plants mainly includes: circulating cooling water, industrial cooling water, chemical desalination water, desulfurization water, dust reduction and washing water, domestic water, etc. With the shortage of water resources, water saving has been paid more and more attention by people. For thermal power plants, saving water not only saves water resources, but also reduces power generation costs. Therefore, saving water is of great significance to thermal power plants. [0004] Wet flue gas desulfurization technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D5/00F23J11/00
Inventor 刘科伟王洪亮庄烨陈振宇王峰
Owner BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENG
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