Scheelite reaction still temperature control system
A temperature control system and reactor technology, applied in the field of control systems, can solve the problems of unstable product quality, nonlinearity, and high energy consumption, and achieve the effects of enhancing anti-interference ability, improving control accuracy, and reasonable hardware design
Inactive Publication Date: 2018-03-09
郭琳
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[0004] The purpose of the present invention is to design a scheelite reaction process for the problems of high energy consumption and unstable product quality in the scheelite alkali pressure cooking process, as well as the shortcomings of the reaction kettle such as nonlinearity, time lag, and intermittent. Kettle temperature control system
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[0019] Such as figure 1 As shown, the system is mainly composed of a temperature detection module, a data processing module, a parameter display module, and a temperature control execution module. The core component of the temperature detection module is a temperature sensor. The present invention uses a PT100 temperature sensor to detect the temperature in the kettle; the temperature control execution module mainly includes a solenoid valve and a stepper motor, the solenoid valve is used to control the steam valve, and the stepper motor is used to control the steam valve. The opening of the refrigerant valve; the core component of the data processing module is a single-chip microcomputer, which controls the angle of the stepping motor through the fuzzy PID algorithm to adjust the opening of the refrigerant valve to achieve the purpose of controlling the temperature in the kettle.
[0020] Such as figure 2 As shown, according to the alkali pressure boiling decomposition reac...
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Aiming at the problems in the scheelite autoclave-soda process that the energy consumption is higher and the product quality is not stable and the defects that a reaction still has nonlinearity, time-lag and intermittence, the invention discloses a scheelite reaction still temperature control system. According to the heat transmission manner and the material balance principle in a reaction still,the transfer function relationship of the temperature control system is established; and the fuzzy-PID algorithm is adopted to control the rotating angle of a stepping motor so as to adjust the openness of a cryogen valve and control the temperature in the reaction still. The fuzzy-PID controller meets the temperature control requirements of the reaction still in the two aspects of overshoot and transient time, the adjusting time is about 0.5s and the overshoot is less than 1%. The simulation result of the Proteus software indicates that the scheelite reaction still temperature control systemis high in control precision and excellent in dynamic property and can realize automation of a reaction process.
Description
Technical field [0001] The invention relates to a control system, in particular to a temperature control system for a scheelite reaction kettle. Background technique [0002] The NaOH decomposition process of scheelite and black-and-white tungsten mixed ore has become the best choice for processing various tungsten minerals due to its short process, high decomposition rate, low impurity leaching rate, simple equipment, low energy consumption, and strong adaptability to ore raw materials. General technology of raw materials. At present, more than 90% of domestic tungsten mineral raw materials are decomposed using this technology. In the alkali boiling process, the use of autoclave as a reactor can solve the problem of decomposition of various tungsten mineral raw materials including scheelite. However, in the current scheelite alkali boiling process, because the decomposition process has not yet realized intelligent and automatic control, there are potentials in energy savi...
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IPC IPC(8): C22B3/02C22B3/12C22B34/36G05D23/20
CPCC22B3/02C22B3/12C22B34/36G05D23/20Y02P10/20
Inventor 郭琳
Owner 郭琳