Material layer thickness characterization method based on grate cooler hydraulic pressure

A technology of material layer thickness and grate cooler, which is applied in the field of cement industry, can solve the problems of staying in the experimental research stage and difficult promotion, and achieve the effects of improving heat recovery efficiency, considerable economic benefits, and improving stability

Active Publication Date: 2016-02-03
中才邦业(杭州)智能技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the literature, there are many studies trying to solve this problem, proposing a method of comprehensively characterizing the thickness of the material layer by combining the pressure of the grate with the current of a fan in a chamber or the current of the main engine of the grate cooler, but they all remain at the stage of experimental research and are still difficult. promote

Method used

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  • Material layer thickness characterization method based on grate cooler hydraulic pressure
  • Material layer thickness characterization method based on grate cooler hydraulic pressure
  • Material layer thickness characterization method based on grate cooler hydraulic pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1. PID control

[0045]The hydraulic signal of the first-stage grate cooler is used as the controlled variable, and the grate speed of the first-stage grate cooler is used as the manipulated variable, and a PID loop is constructed to realize the automatic adjustment of the grate speed of the first-stage grate cooler, thereby improving the stability of the grate-cooler material layer thickness.

Embodiment 2

[0046] Example 2. Model Predictive Control

[0047] Taking the hydraulic signals of the first-stage, second-stage and third-stage grate coolers as the controlled variables, and the grate speed of the first-stage, second-stage, and third-stage grate coolers as the manipulated variables, a model predictive controller is constructed to realize the control of the first-stage, second-stage, and third-stage grate coolers. The coordinated adjustment of the grate speed of the cooler improves the stability of the material layer thickness of the first, second and third stage grate coolers, so that the working conditions of the whole grate cooler tend to be stable, and the heat recovery efficiency is greatly improved.

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Abstract

The invention discloses a material thickness characterization method based on hydraulic pressure of a grate cooler. The maximum value of a hydraulic transmission signal of the grate cooler in a period of time window is collected and used for characterizing the material thickness of the grate cooler. According to the material thickness characterization method based on the hydraulic pressure of the grate cooler, the hydraulic pressure of the grate cooler is used as a controlled variable to be combined with a control system, therefore, automatic adjustment of the grate speed of the grate cooler can be achieved, and the stability of the material thickness can be greatly improved. Furthermore, due to improvement of the stability of the material thickness, the heat recovery efficiency of the grate cooler can be stabilized and improved, and considerable economic benefits are obtained.

Description

technical field [0001] The invention relates to the field of cement industry, in particular to a material layer thickness characterization method based on grate cooler hydraulic pressure. Background technique [0002] The cement grate cooler is one of the key equipments in the cement production line. Its main function is to cool and transport the high-temperature clinker after calcination in the kiln. main equipment. [0003] The grate cooler is an air quench cooler, and its process flow chart is as follows figure 1 shown. The hot clinker is unloaded from the kiln mouth to the grate bed, and is distributed along the whole bed of the grate bed under the push of the reciprocating grate plate to form a clinker layer of a certain thickness. Diffusion, vertically passing through the clinker moving on the grate bed to make it quench, the wind and the clinker are fully heat exchanged, such as figure 1 shown. Along the direction of clinker movement, according to different tempe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D19/00
Inventor 欧丹林袁亦斌
Owner 中才邦业(杭州)智能技术有限公司
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