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Flue gas water capture apparatus based on ceramic membrane, and ceramic membrane cleaning process

A ceramic membrane and flue gas technology, applied in the field of flue gas water capture, can solve problems such as large water consumption, chemical cleaning agent consumption, and unclean cleaning.

Pending Publication Date: 2019-11-19
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0007] The purpose of the present invention is to provide a ceramic membrane-based flue gas water catcher and ceramic membrane cleaning process, which solves the problems of large water consumption, unclean cleaning and the amount of chemical cleaning agent in the existing process
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  • Flue gas water capture apparatus based on ceramic membrane, and ceramic membrane cleaning process

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Embodiment Construction

[0026] One embodiment of the present disclosure will be specifically described below, but the present disclosure is not limited thereto.

[0027] refer to figure 1 : After the flue gas passes through FGD, it forms steam-saturated flue gas. The water vapor is captured by the membrane module, and the captured water enters the water recovery tank. Directly used as process make-up water for FGD. The flushing device is composed of chemical cleaning and gas-liquid alternate backwashing. Chemical cleaning is used to clean the heavily polluted area in front of the ceramic membrane module by adding a special cleaning agent. Rinse thoroughly with rinse water. A low-temperature process spraying device is arranged in front of the ceramic membrane module, and the low-temperature process water and backwash water must pass through the low-temperature treatment device. The ceramic membrane module is equipped with pressure measuring elements before and after to control the start and stop of ...

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Abstract

The invention belongs to the technical field of flue gas water capture, and particularly relates to a flue gas water capture apparatus based on a ceramic membrane, and a ceramic membrane cleaning process, wherein the flue gas water capture apparatus comprises a ceramic membrane unit, a chemical cleaning unit, a gas-liquid alternating backwashing unit and a low-temperature process spraying unit. According to the present invention, with the apparatus, the problems of large water consumption, incomplete cleaning and chemical cleaning agent consumption of the mechanical cleaning are solved, the problem of environmental pollution caused by tiny fine particles in flue gas and acid gas is further solved, and the capturing efficiency of the water vapor by the ceramic membrane assembly is further improved.

Description

technical field [0001] The invention belongs to the technical field of flue gas water capture, and in particular relates to a ceramic membrane-based flue gas water capture device and a ceramic membrane cleaning process. Background technique [0002] The flue gas at the FGD outlet is fully sprayed with desulfurization slurry, and the water vapor in the flue gas is in a supersaturated state. This part of the flue gas will be discharged into the atmosphere through the chimney, causing a lot of waste of water resources, and the flue gas contains a large amount of Tiny fine particles and acid gases will also cause great harm to the environment. Therefore, many people are now researching how to capture the water vapor in this part of the flue gas. Among them, the ceramic membrane technology is an advantageous method in the current water capture technology, but in the ceramic membrane water capture technology, the membrane pores with small pore sizes are very small. It is easy to ...

Claims

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Application Information

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IPC IPC(8): B01D53/22B01D53/26B01D65/02B01D46/54
CPCB01D53/268B01D53/22B01D65/02B01D46/543B01D2321/04B01D2321/168B01D2257/2045B01D2257/302B01D2257/80B01D2053/221
Inventor 肖海平袁宗海李建高丹
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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