An intelligent setting system and method for alumina evaporation process
A kind of aluminum oxide, intelligent technology, applied in the direction of chemical process analysis/design, chemical instruments and methods, aluminum compounds, etc., can solve the problems of difficult judgment of the evaporation process for the operator, the decline of the pass rate of the output concentration, and the low efficiency of the evaporator, etc. Achieve the effects of avoiding subjectivity and arbitrariness, reducing workload, and ensuring product quality
Active Publication Date: 2021-06-08
NORTHEASTERN UNIV LIAONING
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Problems solved by technology
[0003] At present, the output concentration of the alumina evaporation process relies on manual control. Due to the complexity of the evaporation process, the concentration adjustment has a lag, and it is difficult for the operator to make timely and accurate judgments on the evaporation process, and it is difficult to make timely adjustments to the evaporator feed. Timely and accurate adjustments are made, so that the output concentration is in a state of too high or too low concentration most of the time, resulting in waste of energy, low evaporator efficiency, and a decline in the pass rate of the output concentration.
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[0098] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0099] Such as figure 1 As shown, the structure of an intelligent setting system for an alumina evaporation process in this embodiment is as follows, including: a bottom evaporation circuit, a data processing and display layer, and an operation layer;
[0100] The underlying evaporation circuit provides basic data for the intelligent setting layer, and the basic data includes: circuit data, process operation data and assay data;
[0101] The bottom evaporation loop includes: feed pipe, discharge pipe, falling film evaporator, flash evaporator, blending tank, temperature sensor, flow sensor, concentration meter, electric regulating valve, and basic control loop;
[0102] ...
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The invention discloses an intelligent setting system and method for an alumina evaporation process, belonging to the technical field of industrial automation control. The system monitors the feed and discharge concentration, flow rate, and feed temperature during the evaporation process in real time. According to the discharge concentration, the method of rule reasoning is used to make feedback adjustments to the feed flow value; according to the change of the boundary conditions of the feed temperature and feed concentration, the method of rule reasoning is used to make feedforward adjustments to the feed flow value; and through the basic control The loop controls the electric regulating valve to adjust the feed flow, realizing the intelligent setting control of the alumina evaporation system. Compared with adjusting the feed flow through manual experience operation, this intelligent setting system and method reduces the workload of operators, avoids the subjectivity and arbitrariness of production based on experience, and effectively improves product quality and other production indicators. Reliable guarantee.
Description
technical field [0001] The invention relates to the technical field of industrial automation control, in particular to an intelligent setting system and method for an alumina evaporation process. Background technique [0002] In the process of producing alumina by the Bayer method, the main purpose of the alumina evaporation process is to remove excess water in the production process by heating and evaporating the mother liquor, increase the concentration of the mother liquor, and make the evaporated mother liquor meet the subsequent lye preparation process The requirements for preparing qualified circulating lye, thereby ensuring the normal progress of the Bayer process alumina production cycle. [0003] At present, the output concentration of the alumina evaporation process relies on manual control. Due to the complexity of the evaporation process, the concentration adjustment has a lag, and it is difficult for the operator to make timely and accurate judgments on the evap...
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IPC IPC(8): G16C20/10
CPCC01F7/0666
Inventor 王良勇李战辉柴天佑贾瑶唐光振
Owner NORTHEASTERN UNIV LIAONING