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Device and method for controlling discharge of kiln combustible waste gas

A technology of exhaust gas emission and control device, applied in furnace control device, furnace, waste heat treatment and other directions, can solve problems such as energy waste, unreasonable structure and combustion method, and atmospheric pollution.

Inactive Publication Date: 2014-02-19
ANHUI XINLONG ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, my country's boiler and kiln products are widely used in all walks of life, but the structure and combustion method of traditional furnaces are unreasonable, and insufficient combustion causes a large waste of energy. A large part is directly discharged to the outside world, and direct discharge to the air will cause greater pollution to the atmospheric environment

Method used

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  • Device and method for controlling discharge of kiln combustible waste gas
  • Device and method for controlling discharge of kiln combustible waste gas
  • Device and method for controlling discharge of kiln combustible waste gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The pressure acquisition unit detects the gas flow in the pipeline. When the detected gas flow reaches 10mA after A / D conversion, the PLC control module turns on the first kiln ignition device. When the gas flow continues to increase and reaches 15mA after A / D conversion The PLC control module turns on the second kiln ignition device, and when the gas flow continues to increase and reaches 20mA after A / D conversion, the PLC control module turns on the third kiln ignition device.

Embodiment 2

[0028] According to actual needs, a temperature acquisition unit (temperature sensor) and a pressure sensor can be used to collect the gas temperature and pressure signals in the pipeline. The temperature and pressure signals collected by the temperature sensor and pressure sensor are converted into 4-20mA current signals, and the 4 channels of the analog input module S7-300AI module are selected to simultaneously receive and process the 4-20mA current signals.

[0029] The PLC control module simultaneously detects the current signals sent back by temperature and pressure; the priority of the temperature signal is higher than that of the pressure signal. When the temperature feedback in the pipeline is lower than 8mA, no matter how much the pressure feedback is, 3 ignition devices are turned on; when the temperature feedback is at 8mA When the temperature is ~16mA, add an ignition device for each stage on the basis of Example 1; when the temperature feedback is higher than 16mA...

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Abstract

The invention relates to a device and method for controlling discharge of kiln combustible waste gas. The device for controlling discharge of the kiln combustible waste gas comprises a collection unit, a kiln ignition device and a control module. The collection unit collects a signal of the kiln combustible waste gas inside a kiln combustible waste gas pipeline and inputs the signal to the control module; the control module sends a control instruction to control the kiln ignition device. The method for controlling discharge of the kiln combustible waste gas comprises the steps that 1, the collection unit collects detected gas flow; 2, the detected gas flow is converted into a current signal in an A / D mode; 3, the control module controls the starting number of the kiln ignition device according to the converted current signal; 4, when automatic control is out of order, the ignition work is carried out by controlling the starting number of the kiln ignition device manually. By means of the device and method for controlling discharge of the kiln combustible waste gas, the kiln combustible waste gas of secondary products produced in the chemical production process is discharged, and pollution to the atmospheric environment is reduced.

Description

technical field [0001] The invention relates to the field of industrial control, and relates to a device and method for controlling the discharge of combustible waste gas from kilns. Background technique [0002] At present, boiler and kiln products in our country are widely used in all walks of life, but the structure and combustion method of traditional furnaces are unreasonable, and insufficient combustion causes a large waste of energy. A large part is directly discharged to the outside world, and direct discharge to the air will cause greater pollution to the atmospheric environment. [0003] Since the ignition point of the combustible waste gas of the kiln is low, there is no fire barrier, and it is fully burned to make the waste gas a mixture of carbon dioxide and nitrogen and then discharged into the atmosphere, minimizing the pollution of the combustible waste gas of the kiln to the atmosphere so as to achieve The purpose of protecting the environment. Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/06F27D17/00F27D19/00
Inventor 束龙胜袁学超徐怀宾万华颖林武刘雪侠吴小春
Owner ANHUI XINLONG ELECTRICAL