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Method for producing ammonium nitrate solid

A technology of ammonium nitrate and solid, which is applied in the field of nitrate, can solve the problem that the ammonium nitrate solid does not give a specific guidance plan, and achieve the effects of increasing investment in fixed assets, improving product quality, and reducing reaction time

Inactive Publication Date: 2013-07-24
杨勇 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

How this technology produces ammonium nitrate solid for the present invention does not provide specific guidance scheme

Method used

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  • Method for producing ammonium nitrate solid
  • Method for producing ammonium nitrate solid

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Experimental program
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Effect test

Embodiment 1

[0009] Embodiment 1: refer to figure 1 In the reaction tower of the tower reactor 2, a spray device 9 is installed at the top position, and an annular distributor 11 is installed at the middle position in the reaction tower. The annular distributor is an annular pipeline (transmitting ammonia), and the annular pipeline is There are a plurality of ventilation holes (holes through which ammonia gas passes) evenly distributed in the circumferential direction. The bottom of the reaction tower has a discharge hole 1 , and the top of the reaction tower has a top channel 8 . The tower reactor is a spray tower reactor, and its structure itself is a prior art.

[0010] The present invention makes ammonium nitrate solid by following method (reaction formula sees below):

[0011]

[0012] Pass into concentrated nitric acid and ammonia gas in the reaction tower of tower reactor, the ratio of the weight flow of concentrated nitric acid and ammonia gas is 4:1, specifically the spray de...

Embodiment 2

[0014]Embodiment 2: the present invention makes ammonium nitrate solid (reaction formula sees below) by following method: pass into concentrated nitric acid and ammonia in the reaction tower of tower reactor, the ratio of the weight flow of concentrated nitric acid and ammonia It is 5:1 or 5.2:1 or 4.7:1 or 3.7:1. Specifically, the concentrated nitric acid is passed into the spray device installed on the top of the reaction tower, and the ammonia gas is passed into the reaction from the middle of the reaction tower through the annular distributor. In the tower, adjust the spraying device so that the concentrated nitric acid is sprayed into fine concentrated nitric acid droplets on the top of the reaction tower through the spraying device. Generate fine droplets of ammonium nitrate solution, control the reaction temperature between 150~160°C, use the heat generated by the reaction to vaporize the water in the ammonium nitrate solution, complete the vapor-solid separation in the ...

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Abstract

The invention relates to a method for producing ammonium nitrate solid. Concentrated nitric acid and ammonia gas are introduced into a reaction tower of a tower reactor, with the weight flow ratio being 3.7-5.3:1, specifically, concentrated nitric acid is introduced into a spraying device arranged at the top of the reaction tower, ammonia gas is introduced to the reaction tower through an annulardistributor in the middle of the reaction tower, the spraying device is adjusted to enable concentrated nitric acid to be sprayed into fine concentrated nitric acid drops at the top of the reaction tower through the spraying device, the concentrated nitric acid drops contact the ascending normal-pressure ammonia gas in the reaction tower during the falling process to react and generate ammonium nitrate solution fine droplets, the reaction temperature is controlled between 150 to 190 DEG C, moisture in the ammonium nitrate solution is vaporized through heat generated by reaction, vapor-solid separation can be achieved in the reaction tower, and the ammonium nitrate particles, namely the ammonium nitrate solid can be directly prepared. According to the method, reaction flow and reaction time can be reduced, the time of materials retaining in a system can be reduced, the energy is saved and the operating steps are simple and safe.

Description

technical field [0001] The invention relates to a method for producing ammonium nitrate, which is a method for producing ammonium nitrate solid, in particular an energy-saving production method for synthesizing ammonium nitrate solid in one step, and belongs to the technical field of nitrate. Background technique [0002] Ammonium nitrate is a widely used chemical product, mainly used as fertilizer and industrial and military explosives. It can also be used in pesticides, refrigerants, nitrogen oxide absorbents, making laughing gas, fireworks, etc. Its main preparation method is the reaction of nitric acid and ammonia. Nitric acid and ammonia will have a very violent chemical reaction to produce ammonium nitrate, and release a lot of heat at the same time. The elevated temperature of the reaction system is closely related to the concentration of nitric acid. The higher the concentration of nitric acid used, the more violent the reaction and the higher the temperature rise ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01C1/18
Inventor 杨勇李志新黄诘
Owner 杨勇
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