Cement rotary kiln intelligent optimization control system

Abstract

The invention discloses a cement rotary kiln intelligent optimization control system. The system structurally comprises (1) a process control subsystem composed of a rotary kiln head negative pressure control circuit, a grate cooler grate chamber pressure control circuit, the inlet temperature control circuit of a kiln head exhaust gas dust collector, the inlet negative pressure control circuit of a coal dust preparing system and the bowl mill outlet temperature control circuit of the coal dust preparing system; (2) an operation optimization subsystem composed of an operation quality index setting module, a key technological parameter control circuit optimization setting module and a circuit intelligent control module; and (3) a process monitoring subsystem having system monitoring, fault diagnosis, equipment management and safety guaranteeing functions. The system can adapt to a cement rotary kiln calcining process characterized by strong non-linearity, strong coupling, great inertia and large lag to improve the clinker unit weight qualified rate and reduce energy consumption.

Description

Technical field: [0001] The invention belongs to the technical field of cement production process automation control, in particular to an intelligent optimization control system for a cement rotary kiln. Background technique: [0002] The large-scale equipment in the cement production process mainly includes rotary kiln, grate cooler and ball mill for powder making system. For the production process of the rotary kiln, there are couplings of the flow field, temperature field, concentration field, and combustion heat release field in the kiln, and the parameters interact with each other, coupled with each other, there is a large lagging link, and there are many disturbance factors. Manual controls should only be performed by experienced operators. Due to the complex production process of the rotary kiln, including physical and chemical reaction processes such as fluid mechanics, thermodynamics, and heat conduction, and only a few parameters can be directly measured, most of ...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of severe noise interference in the detection of firing zone temperature and calciner temperature in the cement production process, frequent changes in operating conditions and working conditions, strong nonlinearity, strong coupling, large inertia, and large lag in the process. A cement rotary kiln intelligent optimization control system and method are provided

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