Material water spraying device of low-temperature multiple-effect distillation seawater desalination evaporator
A multi-effect distillation and water spray technology, applied in seawater treatment, general water supply saving, heating water/sewage treatment, etc. Compactness and other issues, to achieve the effect of reducing equipment volume and floor space, saving heating steam, and reducing pump power consumption
Active Publication Date: 2012-09-05
CHINA SHENHUA ENERGY CO LTD +3
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Problems solved by technology
[0003] However, the existing tube bundle design cannot effectively utilize the internal space provided by the cylinder, and the heat exchange tubes cannot be arranged at the four corners of the tube bundle, which makes the tube bundle layout not compact, and the diameter of the evaporator is too large
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Embodiment Construction
[0012] see figure 1 , which shows a preferred embodiment of the material water spraying device of a low-temperature multi-effect distillation seawater desalination evaporator of the present invention, including a cylinder 1 and a heat exchange tube bundle 2 arranged in the cylinder 1, wherein the cylinder is Cylindrical shell, the heat exchange tube bundle 2 is fitted along the inside of the shell, such as figure 1 As shown, the cross-section of the heat exchange tube bank 2 is polygonal, so that as many heat exchange tubes as possible can be arranged in the same space to obtain a larger heat exchange area; at the same time, in the heat exchange tube bank 2 Spray nozzles 3 are arranged above, and the distance between the nozzles of the sprinkler nozzles 3 increases in the direction A in which the number of rows of the heat exchange tube bundle 2 decreases. Further, the heat exchange tube bundle 2 has at least a partial number of tube rows in the longitudinal direction, that i...
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The invention relates to a material water spraying device of a low-temperature multiple-effect distillation seawater desalination evaporator. The material water spraying device comprises a cylinder body and a heat exchange tube bundle arranged in the cylinder body, wherein, the cylinder body is a columnar cylinder body; the heat exchange tube bundle is adaptively arranged along the inner part of the cylinder body; spraying nozzles are arranged above the heat exchange tube bundle; and the space between adjacent spraying nozzles is increased in the tube row number reduction direction of the heat exchange tube bundle. The material water spraying device disclosed by the invention has the advantages that the structure is compact, and the occupied area of can be reduced; and a water distributorof the spraying device disclosed by the invention is optimally arranged according to the structure of the tube bundle, so that the total amount of spraying water is reduced, thereby achieving the effects of reducing the power consumption of a seawater pump and saving heating steam.
Description
technical field [0001] The invention relates to a material water spraying device, in particular to a material water spraying device for a low-temperature multi-effect distillation seawater desalination evaporator. Background technique [0002] Low-temperature multi-effect distillation seawater desalination technology is a technology that uses low-grade steam to distill and desalinate seawater at a brine temperature not higher than 70°C. Usually, the heat transfer temperature difference of each effect is 2-5°C. Due to the small heat transfer temperature difference, a large heat transfer area is required, that is, a sufficient number of horizontally arranged heat exchange tubes is required to obtain the required fresh water production. For the convenience of processing and manufacturing, the shell of the existing evaporator is generally a circular cylinder, and the arrangement of the heat exchange tube bundles in the cylinder is subject to many restrictions. Therefore, in orde...
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IPC IPC(8): C02F1/04C02F103/08
CPCY02A20/124
Inventor 周洪光杨庆卫张建丽张忠梅赵华牛聚秦邵英琳张鹏韩晶
Owner CHINA SHENHUA ENERGY CO LTD