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Intelligent blast energy-saving control method for lime calcining kiln

A technology of energy-saving control and calcination kiln, which is applied in the field of lime kiln and can solve the problem of high energy consumption

Inactive Publication Date: 2013-04-24
SHIJIAZHUANG UNIVERSITY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an intelligent blast control method based on the measurement of the gas content in the calcination tail gas, so as to adjust the blast volume in real time according to the calcination working conditions, so as to make up for the defect of high energy consumption of the existing lime calcination kiln

Method used

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  • Intelligent blast energy-saving control method for lime calcining kiln

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Embodiment Construction

[0008] According to attached figure 1 , the method of the present invention uses a gas sampling unit, a preprocessing unit, a gas analyzer, a data processing and control unit, and a frequency converter for detection and control. The gas is sent from the gas sampling unit to the pretreatment unit through the dust filter to remove moisture, then dried and dedusted and sent to the gas analyzer. The gas analyzer uses an infrared gas analyzer to analyze the oxygen, carbon monoxide and carbon dioxide in the tail gas in real time. The component content data is converted into an electrical signal; the data processing and control unit uses a PLC circuit or an industrial computer to process the electrical signal of the gas component; the frequency converter receives the signal from the data processing and control unit and executes the process of increasing or decreasing the frequency operate.

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Abstract

The invention discloses an intelligent blast energy-saving control method for lime calcining kiln. A gas sampling unit, a pretreatment unit, a gas content on-line testing unit, a data processing and control unit, and a frequency converter are included. The gas sampling unit collects kiln gas on-line; the pretreatment unit removes the moisture and ash content in a sample gas; a gas content on-line testing unit detects the contents of gas components; and the data processing and control unit acquires data of the contents gas components for processing and controls the frequency inverter to conduct frequency converting control on a blast fan, so as to adjust the blast volume according to the amount of oxygen required by calcination.

Description

technical field [0001] The invention belongs to the technical field of lime kilns, and in particular relates to an intelligent blast energy-saving control method for lime calcination kilns. Background technique [0002] At present, in the production process of light calcium carbonate, mixed-fired kilns are generally used for calcination of limestone, and then digestion and carbonization reactions are used to produce light calcium carbonate products. [0003] Reasonable air supply is required during the combustion process of the mixed firing kiln, mainly due to the following two reasons: First, in the lime calcination process, most of the feed materials are intermittently fed, and the oxygen required for calcination fluctuates with the feeding cycle, so the calcination process The need for oxygen is not constant; secondly, the amount of wind in the lime calcination process is calculated according to the oxygen demand of the combustible components of the fuel. If the air suppl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/10
CPCY02P40/40
Inventor 吕立强张星辰韩卫荣周二鹏刘会茹
Owner SHIJIAZHUANG UNIVERSITY
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