Constant temperature control system and control method for tower top of acid sprayer for triazole production

Abstract

The invention discloses a tower top constant temperature control system and method for an acid sprayer for triazole production, and the system comprises an obtaining module which is used for obtaining the current temperature of the acid sprayer at a position h away from the ground; the setting module is used for setting a preset temperature range, and the preset temperature range comprises a first temperature value and a second temperature value; the second temperature value is greater than the first temperature value; calculating an intermediate temperature value according to the first temperature value and the second temperature value; segmenting the preset temperature range according to the intermediate temperature value to obtain a first temperature interval and a second temperature interval; and the first determination module is used for adopting different control instructions for the temperature control module according to the relationship between the current temperature and the first temperature interval and the relationship between the current temperature and the second temperature interval. The high-precision temperature control is realized, the gaseous ammonium formate can be better ensured to be liquefied, the loss of the ammonium formate is avoided, and the automation of operation is also realized at the same time.

Description

technical field [0001] The invention relates to the technical field of constant temperature control, in particular to a constant temperature control system and a control method for the tower top of an acid leaching device for triazole production. Background technique [0002] At present, based on the increase of the exchange area of ​​the acid leaching device, the separation of the gaseous amine formate can be realized. In order to ensure the recovery of the ammonium formate, a temperature control system is added to the outflow part of the trachea at the top of the tower. When the current temperature at the distance h from the ground does not meet the predetermined temperature requirement, heating or cooling is performed at a set rate, and when the temperature at the top of the tower differs greatly from the predetermined temperature requirement, heating or cooling is performed at a smaller rate, resulting in The time to reach the predetermined temperature requirement is pro...

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Problems solved by technology

[0002] At present, based on the increase of the exchange area of ​​the acid leaching device, the separation of gaseous ammonium formate can be realized. In order to ensure the recovery of ammonium formate, a temperature control system is added at the outlet of the tower top gas pipe. In the prior art, the acid leaching device is determined When the current temperature at the distance h from the ground does not meet the predetermined temperature requirement, heating or cooling is performed at a set rate, and when the temperature at the top of the tower differs greatly from the predetermined temperature requirement, heating or cooling is performed at a smaller rate, resulting in The time to reach the predetermined temperature requirement is extended, which in turn affects the recovery of ammonium formate; when heating or cooling at a higher rate, it is easy to cause the temperature to be unable to be accurately and reasonably controlled at the predetermined temperature when the predetermined temperature requirement is about to be reached. Inaccurate, resulting in low recovery rate of ammonium formate, also resulted in the loss of part of ammonium formate

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