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Automatic-cleaning type evaporative crystallization device

An automatic cleaning, evaporation and crystallization technology, applied in the direction of evaporation, separation, crystallization, evaporation, solution crystallization, etc., can solve the problems of insufficient efficiency, complex structure, and inability to meet the descaling requirements of crystallization evaporators, and achieve strong descaling and cleaning capabilities, Simple structure and reliable effect

Inactive Publication Date: 2018-10-19
HUNAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that the structure is complex, the circulation flow is large, the liquid film is thick, the frequency is very low, the descaling intensity is not high enough, it cannot meet the descaling requirements of the crystallization evaporator, and the efficiency is not high enough

Method used

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Embodiment Construction

[0017] In order to illustrate the technical solution of the present invention more clearly, the technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the following descriptions are only some embodiments of the present invention. In other words, other embodiments can also be obtained according to these embodiments without paying creative efforts.

[0018] refer to figure 1 , figure 2 , a kind of self-cleaning type evaporation and crystallization device, has the top chamber 2 that self-cleaning mechanism 6 is installed, the falling film evaporator 26 of the top and demister 3, crystallization bottom tank 20 of the bottom, external circulation pump 21 system, make drop The five processes of membrane evaporation concentration, crystallization, dense deposition, coarse and fine classification, and defoaming are integrated.

[0019] The automatic cleaning mechanism 6 configur...

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Abstract

The invention discloses an automatic-cleaning type evaporative crystallization device. A falling film evaporator is arranged at the upper part, the center of the falling film evaporator is provided with a demister, a crystal bottom tank is arranged at the lower part, and a circulation system of the evaporative crystallization device and metering and pipe valve systems for entering and existing offeed liquid are arranged at the outside. The automatic-cleaning type evaporative crystallization device is structurally characterized in that the falling film evaporator, the crystal bottom tank, andthe demister are of three-in-one. An automatic cleaning mechanism of a heating tube of the falling film evaporator consists of a soft spring, a reciprocating motion film distributor capable of movingup and down, and a cleaning spiral; the soft spring is mounted on a fixing plate of a top chamber, and is connected with the cleaning spiral through the reciprocating motion film distributor; the softspring is used for high-power amplification of undulating flow in the heating tube of the falling film evaporator to realize spiral reciprocating automatic cleaning of crystallized salt fouling on the inner wall of the tube. The evaporator of the device is automatically cleaned, the crystal bottom tank is anti-blocking, the advantages of high efficiency, large energy saving, reliability and compact structure are realized, and the device is especially suitable for technical upgrading of small falling film evaporators and current natural circulation evaporators.

Description

technical field [0001] The invention relates to an automatic cleaning evaporation and crystallization device, relates to the descaling and cleaning and heat transfer enhancement of crystallized salt scale in the tube of a tubular falling film evaporator, and also relates to the anti-blocking of the crystallization bottom tank. It is mainly suitable for the technical transformation of small falling film evaporation crystallization bottom tanks for periodic parking and cleaning and active natural circulation evaporation crystallization bottom tanks. It can not only greatly increase production capacity, but also have relatively large energy-saving benefits. Background technique [0002] There are many kinds of existing evaporator automatic cleaning technologies. [0003] The fluidized cleaning technology introduced in the document "New Anti-scaling Technology for Evaporation Devices and Its Application in Calcium Chloride Production" (No. 8, Inorganic Salt Industry, 2008) is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/00B01D1/22B01D1/30B01D9/02
CPCB01D1/0094B01D1/22B01D1/30B01D1/305B01D9/0018
Inventor 俞天兰彭德其俞天翔冯修燕张治坤俞秀民吴金香
Owner HUNAN UNIV OF TECH
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