Grinding system energy consumption optimization method

A technology of grinding and grinding discs, which is applied to the parameter optimization of the grinding system, and optimizes the energy consumption of the mill through the mathematical model, which can solve the problems of missing the opportunity of process optimization and the inability to quickly capture the operating state of the process, so as to ensure the feasibility , the effect of improving the estimation accuracy

Pending Publication Date: 2020-04-21
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

In addition, in the case of manual operation, it is often impossible to quickly capture the operating status of the process and take corresponding measures, thus missing the opportunity for process optimization

Method used

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  • Grinding system energy consumption optimization method
  • Grinding system energy consumption optimization method
  • Grinding system energy consumption optimization method

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Experimental program
Comparison scheme
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Embodiment

[0205] In step S01, the properties of the raw material are sampled multiple times to obtain an average value, which is used as the initial value of the parameters in the model, including the moisture content of the raw material and the hardness index of the raw material.

[0206] Step S02 establishes various steady-state models and optimization models through the equations shown in formulas (1-1)-(1-33), which also includes the correlation model between air volume and fan speed or baffle opening, gas viscosity coefficient and Establishment of empirical models such as the relationship between gas temperatures.

[0207] Step S03 estimates model parameters through historical data and empirical knowledge. The least squares method is used to estimate and solve the model parameters: the model parameters are used as decision variables, and the minimum square sum of the deviation between the actual process state and the model predicted state is used as the optimization goal to establi...

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Abstract

The invention relates to a grinding system energy consumption optimization method based on an optimization model. The method comprises the following steps: firstly, dividing a grinding system into a plurality of different subunits, establishing a corresponding model on each subunit, and obtaining an optimization model of the grinding system; on the basis, establishing the optimization problem between the energy consumption and the running state of the grinding system, and finally, optimizing the energy consumption of the grinding system by optimizing the state set value of the grinding system.The method can effectively reduce the comprehensive energy consumption level of the main motor and the fan in the grinding system.

Description

technical field [0001] The invention relates to the field of parameter optimization of a grinding system, in particular to the field of optimizing energy consumption of a mill through a mathematical model. Background technique [0002] The cement production process requires crushing and grinding of raw materials for subsequent processing. Traditional ball mills are gradually replaced by vertical roller mills due to their high energy consumption, large footprint and low production efficiency. [0003] The energy consumption of the entire cement production line is mainly divided into electricity consumption and coal consumption. Coal consumption mainly depends on the design and operation of the firing system, while electricity consumption is distributed throughout the plant. The raw material grinding and cement clinker grinding systems account for 25%-30% of the power consumption of the whole plant respectively. In the case of a given system design, its energy consumption mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/04B02C25/00
CPCG06Q10/04G06Q50/04B02C25/00Y02P90/30
Inventor 钱锋朱远明钟伟民杜文莉
Owner EAST CHINA UNIV OF SCI & TECH
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