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Evaporating crystallizer

A technology of evaporation crystallizer and evaporation chamber, which is applied in the field of wastewater treatment equipment, can solve problems such as blockage and frequency, and achieve the effect of continuous production and extended equipment operation cycle

Inactive Publication Date: 2015-12-09
CHINA CEC ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an evaporation crystallizer, which is suitable for the evaporation treatment of salty wastewater under various concentrations and medium conditions, and can solve the problems of frequent tank cleaning and cleaning caused by blockage and scaling of equipment and heat exchange tubes

Method used

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  • Evaporating crystallizer

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Embodiment Construction

[0009] The present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.

[0010] Such as figure 1 As shown, the evaporation crystallizer includes an evaporation chamber 1, a heating chamber 2, a forced circulation pump 3, a circulation pipe 4, and a salt leg 5. The cone section on the top of the evaporation chamber is provided with an exhaust port 6, an observation mirror 7, a demister 8, Spray device 9, secondary steam outlet 10, exhaust port 6 is provided on the top of evaporation chamber 1, bell mouth 11 is installed inside evaporation chamber 1, and bell mouth 11 is below the liquid surface; steam inlet 12 is arranged on the upper part of the heating chamber, The lower part is provided with a condensed water outlet 13, and the upper and lower ends are provided with a non-condensable gas outlet 14; the forced circulation pump 3 is connected to the heat exchanger through the circulation pipe by means of side entry and ejec...

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Abstract

An evaporating crystallizer comprises an evaporating chamber, a heat exchanger, a forced circulating pump, a circulating pipe clamp sleeve and a salt leg. A foam remover is arranged in the evaporating chamber. Spraying devices are arranged in front of and behind the foam remover. A horn mouth is formed in the center of the foam remover and is located below the liquid level. The forced circulating pump is connected with the heat exchanger through a circulating pipe in a side-inlet and top-outlet mode. A material liquid inlet is formed in the horizontal section of the circulating pipe. A clamp sleeve connector is arranged on the perpendicular section of the circulating pipe. By means of forced circulating heat exchange, the possibility that salt-bearing wastewater is prone to blocking the heat exchanger and producing scales in the heat exchanger in a conventional process is lowered; meanwhile, by means of the built-in foam remover and the spraying devices, secondary steam carries little liquid foam; due to the tank type, the evaporating crystallizer is suitable for various salt-bearing wastewater concentration working conditions, is particularly suitable for an MVR process device, can achieve continuous production, and is long in running cycle, stable in operation and convenient to control.

Description

technical field [0001] The invention belongs to waste water treatment equipment, in particular to an evaporation crystallizer used for treating waste water in pulp and paper making, coal chemical industry, desulfurization waste water and other industries. Background technique [0002] In the saline wastewater treatment process of pulp and paper, coal chemical industry, desulfurization wastewater and other fields, most of the water can be recovered through pretreatment, ultrafiltration + reverse osmosis, nanofiltration, electrodialysis and other processes, but some high Concentrated saline wastewater. These high-concentration saline wastewater contains a large amount of inorganic salts such as sodium chloride and sodium sulfate. If they are discharged directly without treatment, it will not only lead to a great waste of resources, but also cause pollution to the local environment. At present, the conventional saline wastewater evaporation treatment process uses evaporators s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04
Inventor 林卫李冰张剑军万华朱利民赵红乔
Owner CHINA CEC ENG
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