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Optimized control system and method of synthetic ammonia hydrogen nitrogen ratio

A technology of optimal control and hydrogen-nitrogen ratio, applied in control/regulation system, multiple fluid ratio control, ratio control, etc., can solve problems such as inability to precisely control the controlled object.

Active Publication Date: 2012-12-19
ZHEJIANG SUPCON TECH
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Problems solved by technology

[0006] In view of this, the present invention provides a synthetic ammonia-hydrogen-nitrogen ratio optimization control system and method to solve the problem that the controlled object cannot be precisely controlled due to various uncertain factors in the existing systems and methods

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  • Optimized control system and method of synthetic ammonia hydrogen nitrogen ratio
  • Optimized control system and method of synthetic ammonia hydrogen nitrogen ratio
  • Optimized control system and method of synthetic ammonia hydrogen nitrogen ratio

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Embodiment Construction

[0071] For the sake of reference and clarity, the technical terms, abbreviations or abbreviations used in this article are summarized and explained as follows:

[0072] DMC: Dynamic Matrix Control, that is, dynamic matrix control, is an incremental algorithm based on computer control, and based on the unit step response of the system, it is suitable for stable linear systems. Having pure hysteresis in the dynamics of the system does not affect the direct application of the algorithm.

[0073] I control: control with integral characteristics.

[0074] PI control: Control with proportional and integral characteristics.

[0075] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments ...

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Abstract

The application discloses an optimized control system and an optimized control method of synthetic ammonia hydrogen nitrogen ratio. The system comprises a channel device, a detection device, a multi-path voting device, a target optimizing device and a dynamic matrix DMC (digital micro-circuit) control device. The method comprises a dynamic matrix DMC control algorithm with waiting follow-up characteristics, multiple groups of control channels built on the basis of flow simulation, a multi-path voting technology aiming at the situation of a meter signal, and a self-optimizing strategy of a control target. The optimized control system and the optimized control method of synthetic ammonia hydrogen nitrogen ratio provided by the application have better static and dynamic performances; precise and stable control of the hydrogen nitrogen ratio can be achieved; meanwhile, the control scheme is high in online rate, and strong in fault tolerance and robustness. The control difficulties of large delay complex integral objects of a plurality of links, strong interference, non-linearity and strong time-variation in the synthetic ammonia hydrogen nitrogen ratio control can be better adapted and solved.

Description

technical field [0001] The present application relates to the field of automatic control optimization and chemical technology, in particular to a system and method for optimizing the hydrogen-nitrogen ratio of synthetic ammonia. Background technique [0002] At present, the "circulation method" is widely used in the industry to synthesize industrial ammonia. The synthetic process mainly includes the steps of gas generation, desulfurization, transformation, decarburization, and ammonia synthesis. The synthesis of industrial ammonia mainly uses hydrogen and nitrogen to react to synthesize ammonia products. In order to solve the problem of low conversion rate of hydrogen and nitrogen synthesis during the reaction, it is necessary to separate the ammonia products from the gas after the synthesis reaction, and then separate the ammonia products The remaining gas is mixed with fresh nitrogen and hydrogen to participate in the synthesis reaction again. During the process, the rati...

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Application Information

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IPC IPC(8): G05D21/02
Inventor 刘金刚刘双刚马越峰赖景宁
Owner ZHEJIANG SUPCON TECH
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