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Hot water heating low-temperature multi-effect distillation seawater desalination device

A low-temperature, multi-effect distillation technology for heating, applied in heating water/sewage treatment, seawater treatment, water/sewage treatment, etc. It can solve the problems of high power consumption for water production, large equipment investment, complex design, etc., and reduce the power consumption for water production. , The effect of simple system and convenient maintenance

Pending Publication Date: 2021-03-30
SHANGHAI POWER STATION ACCESSORY MACHINERY PLANT CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of complex design of the existing hot water flash evaporation low temperature multi-effect distillation seawater desalination technology system, large equipment investment, large land occupation and high water and electricity consumption

Method used

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  • Hot water heating low-temperature multi-effect distillation seawater desalination device
  • Hot water heating low-temperature multi-effect distillation seawater desalination device
  • Hot water heating low-temperature multi-effect distillation seawater desalination device

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Embodiment Construction

[0023] In order to make the present invention more obvious and understandable, the preferred embodiments are described in detail as follows in conjunction with the accompanying drawings:

[0024] Such as Figure 1-5 As shown, the present invention provides a hot water heating low-temperature multi-effect distillation seawater desalination device, including a low-temperature multi-effect evaporator 1; the evaporator shell of the first effect 2 of the low-temperature multi-effect evaporator 1 is provided with a heat exchange tube bundle -3. A spray device 8 is arranged above the heat exchange tube bundle -3. The end of the heat exchange tube bundle 1 close to the hot water supply pipe is set as the front end, and the end of the heat exchange tube bundle 1 far away from the hot water supply pipe is set as the rear end; the front end of the heat exchange tube bundle 1 is provided with a front water chamber 4, and the heat exchange tube bundle 1 3 The rear end of the water chamber...

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Abstract

The invention relates to a hot water heating low-temperature multi-effect distillation seawater desalination device, and belongs to the technical field of seawater treatment. The system comprises a low-temperature multi-effect evaporator; wherein a unique heat exchange tube bundle structure is arranged in an evaporator shell of the first effect of an evaporator of the low-temperature multi-effectevaporator, and a spraying device is arranged above a heat exchange tube bundle. Based on the design of the longitudinal channels in the heat exchange tube bundle, the influence of secondary steam flowing on falling film liquid distribution is reduced, and normal operation and efficient heat transfer of hot water heating falling film evaporation are guaranteed; the hot water directly enters a first-effect heat exchange tube of the evaporator to serve as a heating heat source, pressure loss of the hot water entering and exiting the low-temperature multi-effect distillation seawater desalinationdevice can be reduced, a large-flow high-lift hot water return pump is not needed, and water production power consumption of seawater desalination is reduced; therefore, a hot water spraying system is not needed, the first effect of the evaporator does not generate condensed water, and the system is simple and convenient to maintain; besides, the system is free of a hot water flash evaporation devic, so that the equipment investment and occupied area of seawater desalination are reduced.

Description

technical field [0001] The invention relates to a hot water heating low-temperature multi-effect distillation seawater desalination device, which belongs to the technical field of seawater desalination. Background technique [0002] Desalination of seawater is an important source of fresh water resources, which can effectively alleviate the contradiction between supply and demand of fresh water resources in coastal areas, and it is an inevitable trend for coastal areas to solve the fresh water crisis by asking for fresh water from the ocean. In recent years, large-scale steel, refining and chemical industries in coastal areas have adopted seawater desalination technology to prepare fresh water to meet their water needs. Since most of these industrial users have abundant and low-cost low-temperature waste heat in the form of hot water, waste heat utilization combined with low-temperature multi-effect distillation seawater desalination technology has become the mainstream tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/06C02F1/04C02F103/08
CPCC02F1/06C02F1/043C02F2103/08C02F2209/02Y02A20/124
Inventor 樊智锋李海红吴彬彬王晓鹏
Owner SHANGHAI POWER STATION ACCESSORY MACHINERY PLANT CO LTD
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