A control system and method for a bag filter

A technology of bag dust collector and control system, which is applied in the direction of chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of inability to monitor bag dust removal conditions well, achieve good flue gas emission conditions, improve dust cleaning efficiency, save The effect of electricity

Active Publication Date: 2021-03-19
SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, aiming at the deficiencies of the prior art, the present invention provides a control system and method for the bag filter used in the steelmaking converter flue gas dust removal system, so as to solve the problem that the existing bag filter cannot monitor the dust removal situation in the bag well. The problem

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  • A control system and method for a bag filter

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Effect test

Embodiment 1

[0027] Embodiment 1 (the bag filter is the structure of two warehouses):

[0028] A control method of a bag filter for a flue gas dust removal system of a steelmaking converter, comprising the following steps:

[0029] (1) Signal detection: The temperature sensor detects the temperature of the flue gas entering the bag filter, the differential pressure sensor detects the pressure difference between the inlet and outlet of the bag filter, and the oxygen concentration sensor detects the oxygen concentration in the steelmaking converter;

[0030] (2) Signal comparison: The PLC controller receives the temperature signal of the temperature sensor, the differential pressure signal of the differential pressure sensor and the oxygen concentration signal of the oxygen concentration sensor, and compares it with the set value to see whether it is close to or exceeds the set value;

[0031] (3) Action:

[0032] A. When the temperature exceeds or is lower than the set value, the PLC contr...

Embodiment 2

[0035] Embodiment 2 (the bag filter is the structure of three warehouses):

[0036] A control method of a bag filter for a flue gas dust removal system of a steelmaking converter, comprising the following steps:

[0037] (1) Signal detection: The temperature sensor detects the temperature of the flue gas entering the bag filter, the differential pressure sensor detects the pressure difference between the inlet and outlet of the bag filter, and the oxygen concentration sensor detects the oxygen concentration in the steelmaking converter;

[0038] (2) Signal comparison: The PLC controller receives the temperature signal of the temperature sensor, the differential pressure signal of the differential pressure sensor and the oxygen concentration signal of the oxygen concentration sensor, and compares it with the set value to see whether it is close to or exceeds the set value;

[0039] (3) Action:

[0040] A. When the temperature exceeds or is lower than the set value, the PLC con...

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Abstract

The invention discloses a control system and a control method of a bag-type dust remover. The system comprises a temperature sensor, a differential pressure sensor, an oxygen concentration sensor anda PLC (programmable logic controller); the temperature sensor is arranged in an inlet air flue and is in signal connection with the input end of the PLC; the differential pressure sensor is arranged at the top of the bag-type dust remover and is in signal connection with the input end of the PLC; the oxygen concentration sensor is arranged in a steel-making converter and is in signal connection with the input end of the PLC; and the output port of the PLC is connected with an offline valve, a bypass valve, a blowing pulse valve and a dust-removing fan of the bag-type dust remover as well as adust-removing valve arranged at the flue gas outlet of the steel-making converter. The system has the advantages of automatic detection and automatic control and can guarantee that the production is conducted normally and orderly; furthermore, the flue gas discharge situation is good.

Description

technical field [0001] The invention relates to a control system and method for a bag filter, in particular to a control system and method for a bag filter in a steelmaking converter flue gas dust removal system, belonging to the technical field of steelmaking converter flue gas dust removal equipment. Background technique [0002] Steelmaking converter refers to oxygen top-blowing converter, including top-bottom double-blowing converter. At present, converter oxygen-blowing steelmaking with blast furnace molten iron has become the main steelmaking process at home and abroad. During the converter blowing process, the converter produces high-temperature waste gas of about 1450℃, which contains a large amount of dust, and the dust concentration can reach 150-200g / Nm 3 , it can be discharged after dust removal. [0003] As a convenient flue gas dust removal equipment, the bag filter has been widely used in the converter dust removal system. However, the existing bag filter is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/44B01D46/46B01D46/02
CPCB01D46/02B01D46/44B01D46/446B01D46/448B01D46/46B01D2258/0283
Inventor 肖磊徐进罗新生衡红尹丽罗清明
Owner SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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