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Partitioned condensation desulfurization slurry flash evaporation heat extraction water taking device and method

A technology of desulfurization slurry and water intake device, which is applied in flash evaporation, steam/steam condenser, lighting and heating equipment, etc., can solve the problem of water balance need to be re-established, avoid excessive water replenishment, reduce water consumption, improve water quality effect

Pending Publication Date: 2020-05-19
HUANENG CLEAN ENERGY RES INST
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a device and method for desulfurization slurry flash heat extraction and water extraction by partition condensation, which solves the problem that the water balance needs to be re-established in the existing desulfurization slurry flash process, resulting in a large amount of supplementary water for the desulfurization system.

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  • Partitioned condensation desulfurization slurry flash evaporation heat extraction water taking device and method
  • Partitioned condensation desulfurization slurry flash evaporation heat extraction water taking device and method

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] Such as figure 1 As shown, a desulfurization slurry flash heat extracting water extraction device provided by the present invention includes a tower body 1, a demister 2, a first-stage heat exchanger 3, a liquid distribution tube bundle 4, a nozzle 5, and a slurry pump 6 , drainage pump 7, second-stage heat exchanger 8, vacuum pump 9 and condensate pump 10, wherein, the tower body 1 is a U-shaped tube structure, and the open end of the U-shaped structure is a contracted structure; the tower body The inner cavity of 1 is a negative pressure environment.

[0031] At least two stages of heat exchangers are arranged in the inner cavity of the tower body 1 .

[0032] In the inner cavity of the left pipe of the tower body 1, a liquid distribution tube bundle 4, a mist eliminator 2 and a first-stage heat exchanger 3 are sequentially arranged from bottom to ...

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Abstract

According to a partitioned condensation desulfurization slurry flash evaporation heat extraction water taking device and method, a large amount of water vapor can be extracted from desulfurization slurry through adoption of a flash evaporation method, condensed water formed after the water vapor is condensed is excellent in quality and can serve as supplemented water of a power plant system, and water consumption of a power plant is reduced; after flash evaporation steam is condensed in a partitioned mode, a first-stage heat exchanger plays a role of a tubular demister, generated condensed water can also play a certain role in flushing the demister below the first-stage heat exchanger, and the water quality of the condensed water is further improved; concentration of cold slurry at the bottom of the flash tower is adjusted by distributing condensation amount of heat exchangers in different areas, and excessive water replenishment of the desulfurization tower is avoided.

Description

technical field [0001] The invention belongs to the field of energy saving and emission reduction of thermal power generation, and specifically relates to a desulfurization slurry flash steam extraction heat extraction device and method for partition condensation. Background technique [0002] At present, most coal-fired cogeneration units have adopted a number of energy-saving measures. After the cold-end loss is basically eliminated, the reduction of smoke exhaust loss has become the largest part of the unit’s energy-saving potential. Recovering the waste heat of the flue gas to reduce the exhaust gas temperature and reduce the loss of exhaust gas can effectively improve the energy utilization efficiency of the unit. The recovery of flue gas waste heat mainly adopts the method of partition wall heat exchanger. Since the coal-fired flue gas is ash-containing and acid-containing gas, it is easy to cause wear and corrosion of the heat exchanger, and the reliability of the equ...

Claims

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Application Information

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IPC IPC(8): B01D3/06F28B9/08
CPCB01D3/06F28B9/08
Inventor 周贤彭烁钟迪王保民许世森姚国鹏
Owner HUANENG CLEAN ENERGY RES INST