Industrial nitric acid preparation system
A nitric acid, industrial technology, applied in the field of industrial nitric acid production system, can solve the problems of incomplete dissolution reaction of nitrogen dioxide, use restriction, and inability to break bubbles, etc., to achieve the effect of improving cooling effect, increasing cooling space, and increasing flow stroke
Active Publication Date: 2018-09-07
六安中达信息科技有限公司
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Problems solved by technology
Although this technical scheme can lower the temperature of the distilled water in the absorption tower, the technical scheme cannot crush the bubbles in the absorption tower, so that the nitrogen dioxide in the bubbles cannot be fully dissolved and reacted; the use of this invention is limited
Method used
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Embodiment approach
[0026] As an embodiment of the present invention, the cooling device 2 includes an infusion unit 21 and a cooling unit 22, and the infusion unit 21 includes a cooling cylinder 211, a No. 1 partition 212 and a No. 1 water pipe 213; two No. 1 partitions 212 is fixed seamlessly and symmetrically installed on the inner wall of the cooling cylinder 211; multiple No. 1 water pipes 213 are connected between the two No. 1 partitions 212; the cooling unit 22 is located between the two No. 1 partitions 212, The cooling unit 22 is used to cool the No. 1 water pipe 213; during operation, the distilled water in the absorption layer 18 enters the cooling cylinder 211 through the No. 1 liquid through hole 15 and the liquid supply pipe 16, and then enters through a plurality of No. 1 water pipes 213 In the cooling unit 22, a plurality of No. 1 water pipes 213 are used to divide the distilled water in the cooling device 2, which increases the cooling area of the No. 1 water pipe 213 of the co...
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The invention belongs to the technical field of nitric acid preparation, and specifically relates to an industrial nitric acid preparation system. The system comprises an absorbing tower, a cooling device and pneumatic stirring devices, wherein screening plates are arranged on the inner wall of the absorbing tower in a staggered manner and uniformly divide the absorbing tower into a plurality of absorbing layers; each pneumatic stirring device is arranged in each absorbing layer; the cooling device is arranged outside the absorbing tower; a ventilating hole and a first water inlet are formed in the top of the absorbing tower; a first air inlet and a liquid draining opening are formed in the bottom of the absorbing tower; each pneumatic stirring device comprises a telescoping unit and a stirring unit; the stirring units are used for crushing bubbles in the absorbing layer and increasing the gas dissolving speed. According to the system, water is mainly used for absorbing nitrogen dioxide gas, so that the nitric acid preparation efficiency can be improved; the pollution of nitrogen dioxide to air can be reduced.
Description
technical field [0001] The invention belongs to the field of nitric acid production equipment, in particular to an industrial nitric acid production system. Background technique [0002] At present, the absorption tower is an industrial equipment for absorbing nitrogen dioxide or liquid. It is widely used in the production processes of chemicals, coatings, paints, and pharmaceutical intermediates. Nitrogen dioxide gas produced by the reaction of ammonia and air in the nitric acid industry enters the bottom of the absorption tower, distilled water flows from the top of the tower from top to bottom, and reacts with the rising nitrogen dioxide to form a nitric acid solution. This absorption process is exothermic. chemical reaction process. According to the relevant principles of chemical thermodynamics, the heat of reaction in the tower needs to be removed from the equipment in time to improve the efficiency of absorbing nitrogen dioxide in the absorption tower. At present, d...
Claims
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Login to View More IPC IPC(8): C01B21/40
CPCC01B21/40
Inventor 胡自然周军鹏
Owner 六安中达信息科技有限公司