Mother liquor evaporation system

A mother liquor evaporation and evaporation system technology, applied in the field of ammonium chloride production equipment, can solve the problems of tube and tube heat exchanger mother liquor crystallization clogging, affecting the production efficiency of the evaporation process, and unable to carry out normal production, etc., so as to achieve a small amount of system maintenance , high production efficiency and low energy consumption

Inactive Publication Date: 2012-06-13
赵晨
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Problems solved by technology

The biggest defect of this evaporation process is that the tube-and-tube heat exchanger in the evaporator is easily blocked by mother liquor crystallization. In case of mild blockage, it needs to be flushed and dredged with steam. When serious blockage occurs, only through Dismantling the evaporator to clear the blockage will n

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  • Mother liquor evaporation system
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[0016] The present invention will now be further described through embodiments and in conjunction with the drawings.

[0017] The mother liquor evaporation process of the present invention uses a plurality of evaporators to form a multi-effect evaporation system. The steam passes through the heat exchanger tube of the evaporator and exchanges heat with the mother liquid in the evaporator tank and outside the heat exchanger tube. Evaporation; the one-effect evaporator of the multi-effect evaporator uses the primary steam as the heat exchange medium, and the heat exchangers of each evaporator after the one-effect evaporator use the secondary steam generated by the evaporator before it separately or simultaneously. The heat exchange medium of the heat exchanger exchanges heat with the mother liquid in the corresponding evaporator tank. And by installing a separating plate on the top of the evaporator, part of the condensate collected from the upper part of the separating plate in th...

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Abstract

The present invention discloses a mother liquor evaporation system with good evaporation effect, high production efficiency and low energy consumption. The mother liquor evaporation system comprises evaporators which are composed of a tank and a heat exchanger provided in the tank, an evaporation system is composed of the evaporators, the evaporation system is a multi-effect evaporation system constituted by a plurality of evaporators, in the evaporators of the multi-effect evaporation system, an outlet of the tank of the front evaporator tank is connected to an inlet of the heat exchanger of the rear evaporator; steam passes through the heat exchanger, the one effect evaporator introduces steam for once, the subsequent evaporators successively introduce secondary steam which can be taken as a heat exchange medium.

Description

technical field [0001] The invention relates to an ammonium chloride production device. In particular, it relates to a mother liquor evaporation system. Background technique [0002] In the existing ammonium chloride production process, the mother liquor evaporation of ammonium chloride usually adopts an evaporator with a tube-and-tube heat exchanger inside to evaporate the mother liquor at one time. The tube heat exchanger passes through the tube, and performs isolated heat exchange with the hot water or steam outside the tube heat exchanger and the inner chamber of the evaporator tank, and the mother liquor after passing through the evaporator directly enters the next process. The biggest defect of this evaporation process is that the tube-and-tube heat exchanger in the evaporator is easily blocked by mother liquor crystallization. In case of mild blockage, it needs to be flushed and dredged with steam. When serious blockage occurs, only through Dismantling the evaporato...

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Application Information

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IPC IPC(8): B01D1/26C01F7/02
Inventor 赵晨
Owner 赵晨
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