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Tubular furnace negative pressure ammonia distillation process

A negative pressure ammonia steaming and tube furnace technology, which is used in the preparation/separation of ammonia, degassed water/sewage treatment, etc., can solve the problem of large consumption of ammonia steam, increased waste water, and no significant energy savings, etc. problems, to achieve the effect of low operating cost, reduced operating load, and obvious environmental protection effects

Active Publication Date: 2012-02-01
上海同特化工科技有限公司 +2
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  • Description
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AI Technical Summary

Problems solved by technology

However, through many years of production practice, the direct steam ammonia distillation process has generally exposed two problems: First, the steam consumption of ammonia distillation is large. Usually, the steam consumption of ammonia distillation in the coking production process accounts for a considerable amount of steam consumption in the entire coking production. Second, the heat source of the direct steam ammonia distillation process comes from direct steam, which greatly increases the amount of wastewater to be treated in biochemistry
However, the heat source is provided by gas heating, and the energy has not been greatly saved.

Method used

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  • Tubular furnace negative pressure ammonia distillation process
  • Tubular furnace negative pressure ammonia distillation process
  • Tubular furnace negative pressure ammonia distillation process

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and examples. These examples should be understood as only for illustrating the present invention but not for limiting the protection scope of the present invention. After reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

[0019] Such as figure 1 As shown, in the tubular furnace negative pressure ammonia distillation process for processing coking residual ammonia provided by the preferred embodiment of the present invention, after the residual ammonia is separated from the tar in the residual ammonia tank 1, it is pressurized by the raw ammonia water pump 2, and The ammonia distillation wastewater at the bottom of the tower enters the top of the ammonia distillat...

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Abstract

The invention discloses a tubular furnace negative pressure ammonia distillation process used for treating coking residual ammonia water. The residual ammonia water enters into an ammonia distillation tower which is used for drawing the negative pressure in the top of the tower by using a vacuum pump of a vacuum system or cooling ammonia in the top of the tower by using a venturi injector, the ammonia of the residual ammonia water is volatilized under the negative pressure state, heat source required by ammonia distillation is provided by the ammonia distillation waste water from the bottom of a circular heating ammonia distillation tower of the tubular furnace. The process of the invention has the advantages of energy conservation, emission reduction and daily operation cost reduction; simultaneously the operation state under the negative pressure and low temperature determines that the requirement of the material quality of the main equipment is not high so that the equipment investment cost at early stage is reduced.

Description

technical field [0001] The invention belongs to a process for treating residual ammonia water in the coking industry, and in particular relates to a process for distilling ammonia under negative pressure in a tubular furnace. Background technique [0002] At present, most of the domestic ammonia distillation processes are direct steam method, which is the most traditional and mature ammonia-rich water distillation process. However, through many years of production practice, the direct steam ammonia distillation process has generally exposed two problems: First, the steam consumption of ammonia distillation is large. Usually, the steam consumption of ammonia distillation in the coking production process accounts for a considerable amount of steam consumption in the entire coking production. Second, the heat source of the direct steam ammonia distillation process comes from direct steam, which greatly increases the amount of biochemical wastewater to be treated. These two asp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C1/10C02F1/20
Inventor 余兆祥黄恒波赵刚山冯志安李现坡杨勇
Owner 上海同特化工科技有限公司
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