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Control system and control method of bag-type dust remover

A bag filter and control system technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as the inability to monitor bag dust removal conditions well, achieve good flue gas discharge, improve dust removal efficiency, and save money The effect of electricity

Active Publication Date: 2018-08-10
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

Method used

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  • Control system and control method of bag-type dust remover

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Embodiment 1

[0027] Embodiment 1 (the bag filter is a two-storey structure):

[0028] A control method for a bag filter used in a steelmaking converter flue gas dust removal system, 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 if it is close to or exceeds the set value;

[0031] (3) Action:

[0032] A. When the temperature exceeds or falls below the set value, the PLC controller closes the...

Embodiment 2

[0035] Embodiment 2 (the bag filter is a three-storey structure):

[0036] A control method for a bag filter used in a steelmaking converter flue gas dust removal system, 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 if it is close to or exceeds the set value;

[0039] (3) Action:

[0040] A. When the temperature exceeds or falls below the set value, the PLC controller closes t...

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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 of a bag dust collector, in particular to a control system and method of a bag dust collector used in a steelmaking converter flue gas dust removal system, and belongs to the technical field of steelmaking converter flue gas dust removal equipment. Background technique [0002] The steelmaking converter refers to the oxygen top-blown converter, including the top-bottom re-blown converter. At present, the converter oxygen-blown steelmaking of blast furnace molten iron has become the main steelmaking process at home and abroad. During the blowing process of the converter, high-temperature exhaust gas of about 1450°C is produced in the converter, which contains a large amount of dust, and the dust concentration can reach 150-200g / Nm 3 , need to 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 sy...

Claims

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Application Information

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Patent Type & Authority Applications(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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