Production equipment for producing concentrated nitric acid through magnesium nitrate method

A production equipment and technology for concentrated nitric acid, applied in the field of concentrated nitric acid production, can solve the problems of inability to rationally utilize tower tail water, inability to realize energy saving and emission reduction, and high acid concentration in acidic wastewater, avoiding wall flow and vertical drop, low resistance, The effect of high number of theoretical plates

Active Publication Date: 2018-09-21
宁夏润夏能源化工有限公司
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  • Abstract
  • Description
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Problems solved by technology

Although this method can effectively meet the requirements of environmental protection discharge, the acid concentration of acidic wastewater is high, and it needs to consume a large amount of liquid caustic s

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  • Production equipment for producing concentrated nitric acid through magnesium nitrate method
  • Production equipment for producing concentrated nitric acid through magnesium nitrate method
  • Production equipment for producing concentrated nitric acid through magnesium nitrate method

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0023] The embodiment of the present invention provides a kind of production equipment that magnesium nitrate method produces concentrated nitric acid, refer to figure 1 , figure 2 with image 3 :

[0024] A kind of production equipment of concentrated nitric acid produced by magnesium nitrate method, said production equipment compr...

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Abstract

The embodiment of the invention discloses production equipment for producing concentrated nitric acid through a magnesium nitrate method. By the improvement of a concentration tower, the wall flowingand vertical liquid dropping of a magnesium nitrate solution can be effectively avoided, the content of dilute magnesium nitrate can be greatly reduced, and therefore the concentration of tail water of magnesium formed by the condensation of acid vapour steamed by a magnesium nitrate steamer is 0.1% or less. By adding an acid separator, thorough gas liquid exchange between the magnesium tail waterand the acid vapour can be conducted in the acid separator to effectively reduce the concentration of the tail water of a tower. The magnesium tail water is used as production water and delivered toa circulation water tank to act as production supplying water. By the above improvement, the comprehensive utilization of the tail water of the tower and acid waste water of the magnesium tail water can be achieved, and zero emission of the acid waste water is achieved.

Description

technical field [0001] The invention relates to the technical field of concentrated nitric acid production, in particular to a production equipment for producing concentrated nitric acid by a magnesium nitrate method. Background technique [0002] The magnesium nitrate method concentrated nitric acid production process is a process in which magnesium nitrate solution is used as a dehydrating agent to distill dilute nitric acid to produce concentrated nitric acid. Due to the characteristics of this process, while the nitric acid vapor is condensed in the concentrated nitric acid condenser to generate concentrated nitric acid, a small amount of tail gas and non-condensable gas is circulated through the tower tail water ejector to form a negative pressure and pumped to the tower tail water circulation tank for circular absorption to form acidic tower tail water. The dilute magnesium nitrate solution contains a small amount of non-condensable acid gas produced during the concent...

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Application Information

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IPC IPC(8): C01B21/42B01D3/16B01D3/42
CPCB01D3/16B01D3/42C01B21/42
Inventor 杨超戴付龙魏巍刘伟柏发路刘光明姚莉王娟
Owner 宁夏润夏能源化工有限公司
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