Fuzzy controller for phosphoric acid slurry cooling
A fuzzy controller and slurry technology, applied in the general control system, temperature control, adaptive control, etc., can solve the problems of product quality control adverse effects, process index fluctuations, large operation difficulty, etc., and achieve simple structure and optimized process Indicators, the effect of strong anti-interference ability
Inactive Publication Date: 2015-06-17
HENGYANG NORMAL UNIV
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Problems solved by technology
However, this manual adjustment method requires the operator to have rich adjustment experience, and at the same time requires the operator to closely monitor the change of the adjustment index during the entire adjustment process (generally 2-6 hours), and a slight negligence may easily cause adjustment failure.
At the production site, this adjustment method is difficult to operate, and it is easy to cause fluctuations in process indicators, which will adversely affect product quality control.
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[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] like figure 1 As shown, the fuzzy controller used for phosphoric acid slurry cooling in the present invention is mainly used for temperature regulation of the phosphoric acid slurry cooling process, and it includes a temperature sensor 1, a vacuum sensor 2, a temperature signal processing unit 3, and a vacuum signal processing unit 4. Fuzzy information processing unit 5, sound and light alarm unit 6, output signal processing unit 7 and vacuum adjustment unit 8; wherein, temperature sensor 1 is used to detect the real-time temperature of the slurry in the phosphoric acid extraction tank, and vacuum sensor 2 is used to Detect the real-time vacuum degree in the flash condenser; the temperature signal processing unit 3 is connected with the temperature sensor 1 and converts the detection signal of the temperature sensor 1 into the ...
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The invention discloses a fuzzy controller for phosphoric acid slurry cooling. The fuzzy controller comprises a temperature sensor, a vacuum degree sensor, a fuzzy information processing unit, an output signal processing unit and a vacuum degree regulating unit, wherein the temperature sensor is used for detecting real-time temperature of the slurry in a phosphoric acid extracting tank; the vacuum degree sensor is used for detecting the real-time vacuum degree of a flash-evaporation condenser; the fuzzy information processing unit is used for carrying out fuzzing treatment and fuzzing inference after receiving the temperature signal and the vacuum degree signal of the temperature sensor and the vacuum degree sensor; the output signal processing unit is used for receiving the output result of the fuzzy information processing unit and converting the output result into a current signal; and the vacuum degree regulating unit is used for regulating the air leakage amount of an electric regulating valve according to the current signal of the output signal processing unit. The fuzzy controller for phosphoric acid slurry cooling has the advantages of being high in automation degree, convenient to use, capable of improving the stability of production process indexes, finally improving the finished product quality and the like.
Description
technical field [0001] The invention mainly relates to the field of control equipment for phosphoric acid production, in particular to a fuzzy controller suitable for cooling phosphoric acid slurry. Background technique [0002] As an important chemical raw material, phosphoric acid plays a pivotal role in my country's chemical industry. Industrial phosphoric acid is usually obtained by extracting phosphate rock with sulfuric acid, and the by-product calcium sulfate (commonly known as phosphogypsum) is produced. Calcium sulfate dihydrate has the advantages of coarse crystal particles and easy filtration and separation, so phosphoric acid manufacturers generally use dihydrate process. The process of extracting phosphoric acid is an exothermic process. If the temperature of the phosphoric acid material is not adjusted during the production process, the temperature of the extraction tank can reach 130°C, resulting in unqualified process indicators and workshop shutdown. Produ...
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IPC IPC(8): G05D23/20G05B13/02C01B25/222
Inventor 龙祖强张满红
Owner HENGYANG NORMAL UNIV