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Method for producing ammonium nitrate

A production method, ammonium nitrate technology, applied in the direction of ammonium nitrate, etc., can solve the problems of neutralization reaction exceeding the critical temperature, explosion accidents, etc., to reduce the possibility of explosion and achieve the effect of safe production

Active Publication Date: 2006-12-27
SEDIN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] But even so, owing to adopting the nitric acid (56%~62%) of higher concentration to participate in neutralization reaction, although reaction material is few, exothermic is still very intense, is continuous feed in addition again, and reaction control is a little undeserved , it is still easy to cause the neutralization reaction to exceed the critical temperature and cause an explosion accident

Method used

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  • Method for producing ammonium nitrate

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Embodiment Construction

[0027] One end of the tubular reactor 1 is installed with a nitric acid feed pipe 3 and a gas ammonia feed pipe 4, and material control valves FC1 and FC2 are arranged on the feed pipes. The nitric acid feeding pipe 3 and the gas ammonia feeding pipe 4 are respectively connected with steam pipes 5 and 6 behind the material control valves, and steam control valves HV1 and HV2 are set. A temperature measuring device T1 is installed on the tubular reactor 1, and FC1, FC2, HV1, HV2 are interlocked with T1. The back end of the tubular reactor 1 is connected to the flash tank 2, the bottom of the flash tank is connected to the ammonium nitrate delivery pipe 8, and the neutralization steam output pipe 9 is installed above it. The temperature measuring device T2 is installed at the lower part of the flash tank 2, and a steam condensate pipe 7 is passed into the flash tank 2, and T2 is interlocked with the control valve FC3 on the steam condensate pipe 7.

[0028] During normal produc...

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Abstract

The invention discloses a manufacturing method of ammonium nitrate through neutralizing reaction of nitrate and ammonia gas in the pipe-typed reactor, setting temperature testing device on the pipe-typed reactor; connecting steam pipe on the feeder pipe of nitrate and ammonia gas; assembling steam control valve; interlocking temperature testing device, material controlling valve and steam controlling valve; closing material controlling valve once the reacting temperature reaches the preset control temperature; opening steam controlling valve to guide low-pressure steam to pipe typed reactor; brushing reacting material; avoiding accident to realize safe manufacturing.

Description

technical field [0001] The invention relates to a method for neutralizing nitric acid with ammonia to produce ammonium nitrate, in particular to a method for neutralizing nitric acid and ammonia gas in a tubular reactor to produce ammonium nitrate. Background technique [0002] Nitric acid and ammonia will undergo a very violent chemical reaction, and the reaction can be used to produce ammonium nitrate. The reaction equation is as follows: [0003] <chemistry num="001"> <chem file="200610012913_cml001.xml" / > < / chemistry> [0004] It can be seen from the equation that a large amount of heat will be released during the reaction. If the heat released by the reaction cannot be effectively controlled or removed in time, the temperature of the reaction system will rise rapidly. Ammonium nitrate will undergo a violent decomposition reaction at a certain high temperature, release a large amount of gas, expand rapidly in volume, and cause the danger of explosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C1/18
Inventor 黄顺泰闫保贵宋玉华
Owner SEDIN ENG
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