Catalyst feeding programmed control system and method
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A catalyst and feeding technology, applied in the field of program control, to achieve the effect of rapid blockage removal, labor intensity reduction and cost reduction
Pending Publication Date: 2022-02-15
重庆金维实业有限责任公司
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[0005] The purpose of the present invention is to overcome the existing problems in the prior art of manually clearing the pipeline when the catalyst is fed, and to provide a program-controlled system and method for catalyst feeding
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Embodiment 1
[0038] In an exemplary embodiment, a catalyst feeding program control system is provided, such as figure 1 , 2 As shown, the system includes a catalyst feed pipeline 1, a separator 2, a silo 3, a vacuum pump 4 and a DCS program control unit 8, and the separator 2 is connected to the catalyst feed pipeline 1, the silo 3, and the vacuum pump 4 respectively;
[0039] The catalyst feeding pipeline 1 is provided with a first control valve 11, the separator 1 is connected with the vacuum pump 4 through a vacuum pipeline 41, the vacuum pipeline 41 is provided with a second control valve 42, and the separator 1 The lower end of the separator 2 is connected to the silo 3 through the feeding pipeline 21, the feeding pipeline 21 is provided with a third control valve 31, the upper part of the separator 2 is connected with a gas pressurizing pipeline 5, and the gas pressurizing The pipeline 5 is provided with a fourth control valve 51;
[0040] The third control valve 31 is connected t...
Embodiment 2
[0051] In conjunction with embodiment 1, in this embodiment, a kind of catalyst feed program control method is provided, and described method comprises:
[0052] An interlock program is set in the DCS program control unit 8, which includes the control of the first control valve 11, the second control valve 42, the third control valve 31, the fourth control valve 51 and the purge solenoid valve 61 information;
[0053] The second control valve 42, the first control valve 11, the fourth control valve 51, and the third control valve 31 are sequentially opened through the interlocking procedure to start the feeding process of the catalyst. 30 seconds (adjustable) to close, and the third control valve 31 is opened to delay 300 seconds (adjustable) to close to complete a feeding cycle.
[0054] In the feeding process, the pressure in the separator 2 is detected in real time by the pressure transmitter 7, and whether the separator 2 is blocked is judged according to the detection va...
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Abstract
The invention discloses a catalyst feeding programmed control system and method, and belongs to the technical field of program control. The system comprises a catalyst feeding pipeline (1), a separator (2), a stock bin (3), a vacuum pump (4) and a DCS program control unit (8), wherein the lower end of the separator (1) is connected with the stock bin (3) through a discharging pipeline (21), the discharging pipeline (21) is provided with a third control valve (31), and the separator (2) is connected with a gas pressurization pipeline (5); a gas purging pipeline (6) is connected to the third control valve (31), a purging electromagnetic valve (61) is arranged on the gas purging pipeline (6), a hole is formed in the top of the separator (2), a pressure transmitter (7) is installed in the hole, and a DCS program control unit (8) is connected with the first control valve (11), the second control valve (42), the third control valve (31), the fourth control valve (51) and the purging electromagnetic valve (61). According to the invention, the automatic unblocking of the system is realized by additionally arranging pressure interlocking and a purging gas circuit and redesigning an interlocking program.
Description
technical field [0001] The invention relates to the technical field of program control, in particular to a program control system and method for catalyst feeding. Background technique [0002] In a chemical reaction, a substance that can change the chemical reaction rate of the reactant (both increased and decreased) without changing the chemical balance, and whose quality and chemical properties have not changed before and after the chemical reaction is called a catalyst (a solid catalyst is also called a catalyst). catalyst). According to statistics, more than 90% of industrial processes use catalysts, such as chemical, petrochemical, biochemical, and environmental protection. [0003] Such as figure 2 As shown, the existing catalyst feeding system consists of program-controlled valves, vacuum pumps, separators, silos and the like. When feeding, the vacuum pump starts, and the dried catalyst is sent to the separator through the acceleration chamber and the feeding switc...
Claims
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Application Information
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