MVR evaporative crystallization system

A technology of evaporative crystallization and evaporation tank

Pending Publication Date: 2021-01-15
BEIJING HORIZON ENVIRONMENTAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] MVR evaporation technology is a relatively energy-saving evaporation technology. It usually consists of three major parts: evaporator, vapor-liquid separator and steam compressor. The traditional MVR system has disadvantages: large structure, especially the overall high evaporation tank, maintenance and Transportation is more troublesome
[0005] The

Method used

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  • MVR evaporative crystallization system
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  • MVR evaporative crystallization system

Examples

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Embodiment Construction

[0041] Below in conjunction with accompanying drawing and embodiment of description, specific embodiment of the present invention is described in further detail:

[0042] refer to Figure 1 to Figure 9 A MVR evaporation and crystallization system shown includes evaporation tank 2, crystallizer 3, falling film pipeline group, steam compressor 5 and water distribution device, the number of falling film pipeline groups is multiple, and along the evaporation tank The circumference of 2 is equiangularly distributed inside it, and the falling film pipeline group is arranged vertically. The falling film pipeline group includes the heat conduction sleeve 4 and the heat conduction inner tube 4a arranged inside the heat conduction sleeve 4, and the inner wall of the heat conduction sleeve 4 A liquid supply chamber 4b is formed between the outer wall of the heat-conducting inner tube 4a, and the middle section of the heat-conducting inner tube 4a is covered with a thickening layer 1. Th...

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Abstract

The invention relates to the field of MVR evaporative crystallization equipment, in particular to an MVR evaporative crystallization system. The system comprises an evaporation tank, a crystallizer, aplurality of falling-film pipeline sets, a steam compressor and a water distribution device, wherein the plurality of falling-film pipeline sets are distributed in the evaporation tank along the circumference of the evaporation tank at equal angles; each falling-film pipeline set comprises a heat conduction sleeve and an inner heat conduction pipe arranged in the heat conduction sleeve, a liquidfeeding cavity is formed between the heat conduction sleeve and the inner heat conduction pipe, a thickening layer is arranged at the middle section area of the inner heat conduction pipe, and a spiral groove channel is formed in the thickening layer; the water distribution device is arranged at the top end of the evaporation tank and communicates with all the liquid feeding cavities; the crystallizer is arranged at the bottom of the evaporation tank and communicates with the evaporation tank; the bottom of the evaporation tank is provided with a steam distribution disc communicating with allthe inner heat conduction pipes; and the output end of the steam compressor communicates with the evaporation tank and the steam distribution disc through a steam circulation pipeline of a Y-shaped structure. According to the invention, the length of falling-film pipelines can be reduced, and meanwhile, a water film can be effectively heated and evaporated.

Description

technical field [0001] The invention relates to the field of MVR evaporation crystallization equipment, in particular to an MVR evaporation crystallization system. Background technique [0002] MVR evaporation technology is a relatively energy-saving evaporation technology. It usually consists of three major parts: evaporator, vapor-liquid separator and steam compressor. The traditional MVR system has disadvantages: large structure, especially the overall high evaporation tank, maintenance and Transportation is more troublesome. [0003] The existing MVR evaporation and crystallization system using a vertical tube falling film evaporator, the feed liquid flows in the vertical tube falling film evaporator under the double action of its own weight and steam flow, and the speed is extremely high. In order to ensure high efficiency, heating The length of the tube is usually long, which leads to a large vertical height of the vertical tube falling film evaporator, so the cost of...

Claims

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Application Information

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IPC IPC(8): B01D1/00B01D1/06B01D1/28B01D1/22
CPCB01D1/007B01D1/0047B01D1/065B01D1/2843
Inventor 赵利鑫
Owner BEIJING HORIZON ENVIRONMENTAL TECH
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