A method for optimizing the uniformity of SCR denitration system
An optimization method and uniformity technology, applied in chemical instruments and methods, separation methods, general control systems, etc., can solve problems such as low denitrification efficiency and difficult control of ammonia concentration, and achieve improved denitrification efficiency, real-time and efficient control, and external The effect of strong resilience to disturbance
Active Publication Date: 2022-07-26
山东微立方信息技术股份有限公司
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[0004] For this reason, the technical problem to be solved by the present invention is: to provide a method for optimizing the uniformity of the SCR denitrification system to solve the current technical problem that the ammonia concentration is difficult to control and the denitrification efficiency is low
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[0015] The following specific embodiments are used to illustrate the embodiments of the present invention. Those who are familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0016] Terms such as "front", "rear", "left", "right", "inner", "outer", "middle", etc. quoted in this specification are only for the convenience of description and clarity, and are not used for Limiting the applicable scope of the present invention, the change or adjustment of the relative relationship shall also be regarded as the applicable scope of the present invention without substantially changing th...
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The invention discloses a method for optimizing the uniformity of an SCR denitration system, belonging to the technical field of flue gas treatment. 3 Coverage, Export NH 3 Concentration observer; (a2) verify the stability of the controller and calculate the total amount of ammonia injection; (a3) initialize the weight coefficient; (a4) obtain the result value of the sampling point in the outlet area of the SCR flue and the original opening of the ammonia injection valve; (a5) ) Calculate the optimal input adjustment amount based on the current valve opening, the detection value and the model, and obtain the recommended opening value of the final valve; (a6) Adjust the valve opening based on the recommended opening value, check the results of the outlet sampling point again, and iterate online Weight coefficients, update the model. The invention solves the technical problem of low denitration efficiency caused by the difficulty in controlling the concentration of ammonia gas at present, and is widely used in flue gas treatment.
Description
technical field [0001] The invention belongs to the technical field of flue gas treatment, and in particular relates to a method for optimizing the uniformity of an SCR denitration system. Background technique [0002] Due to the low requirements for the emission standards of flue gas pollutants in coal-fired power plants in the early days, for a long time, the research on SCR denitration system of coal-fired power plants has mainly focused on the denitration principle, catalyst, reactor flow field, etc. The research on the control method of SCR denitration system has not Receive attention. However, the control accuracy of the denitration system not only determines whether the flue gas emission meets the standard, but also affects the operating cost of the power plant. The main control amount in the process of SCR flue gas denitration is the amount of ammonia injection. Too little ammonia injection will lead to insufficient reaction of NOx in the flue gas, and the concentra...
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IPC IPC(8): G05B19/418B01D53/86
CPCG05B19/41865B01D53/8696B01D53/8625B01D2251/2062B01D2258/0283G05B2219/32252Y02P90/02
Inventor 王晓东刘炳军
Owner 山东微立方信息技术股份有限公司