CN-122012836-A - Blast furnace front dust removal control system and method

CN122012836ACN 122012836 ACN122012836 ACN 122012836ACN-122012836-A

Abstract

The invention discloses a blast furnace front dust removal control system and method, wherein the system comprises an iron notch opening machine, a hydraulic mud gun, a swing chute nozzle, front dust removal equipment and a control unit, the iron notch opening machine is used for opening a blast furnace iron notch, the hydraulic mud gun is used for plugging the blast furnace iron notch after tapping, the swing chute nozzle is used for receiving molten iron flowing out of a branch iron runner and sending the molten iron into a molten iron tank, the front dust removal equipment is electrically connected with the iron notch opening machine, the hydraulic mud gun and the swing chute nozzle through the control unit, when the iron notch opening machine starts to open the iron notch, the control unit controls the front dust removal equipment to be started and enter a first preset dust removal efficiency working state, when the hydraulic mud gun ends to plug the iron notch, the control unit controls the front dust removal equipment to reduce dust removal efficiency and enter a second preset dust removal efficiency working state, and when the swing chute nozzle ends to convey molten iron, the control unit controls the front dust removal equipment to be closed.

Inventors

ZHENG NAN
Pan Tianmeng
WU ZHIHONG
SHEN KEZHENG
WANG CHEN
ZHAO JIDONG

Assignees

中冶京诚工程技术有限公司

Dates

Publication Date: 20260512
Application Date: 20241112

Claims (11)

1. The blast furnace front dust removal control system is characterized by comprising an iron notch opening machine, a hydraulic mud gun, a swinging chute nozzle, front dust removal equipment and a control unit, wherein the iron notch opening machine is used for opening a blast furnace iron notch, the hydraulic mud gun is used for blocking the blast furnace iron notch after tapping, and the swinging chute nozzle is used for receiving molten iron flowing out of a branch iron runner and sending the molten iron into a molten iron tank; The front furnace dust removing equipment is electrically connected with the iron notch opening machine, the hydraulic mud gun and the swing chute nozzle through the control unit, when the iron notch opening machine starts to open the iron notch operation, the control unit controls the front furnace dust removing equipment to be opened and enter a first preset dust removing efficiency working state, when the hydraulic mud gun ends to block the notch operation, the control unit controls the front furnace dust removing equipment to reduce the dust removing efficiency and enter a second preset dust removing efficiency working state, and when the swing chute nozzle ends to convey molten iron, the control unit controls the front furnace dust removing equipment to be closed.
2. The blast furnace stokehold dust removal control system of claim 1, wherein the stokehold dust removal equipment comprises a tap dust removal device, a skimmer dust removal device, a branch tap dust removal device, a slag tap dust removal device and a spout dust removal device which are electrically connected with the output end of the control unit.
3. The blast furnace stokehold dust removal control system of claim 2, wherein the control unit comprises a first control module, a second control module, a third control module, a fourth control module and a fifth control module, wherein the first control module is used for controlling the start-stop and dust removal efficiency of the taphole dust removal device, the second control module is used for controlling the start-stop and dust removal efficiency of the skimmer dust removal device, the third control module is used for controlling the start-stop and dust removal efficiency of the branch iron runner dust removal device, the fourth control module is used for controlling the start-stop and dust removal efficiency of the slag runner dust removal device, and the fifth control module is used for controlling the start-stop and dust removal efficiency of the spout dust removal device.
4. The blast furnace stokehole dust removal control system according to claim 3, wherein the taphole dust removal device comprises a top suction dust removal mechanism and side suction dust removal mechanisms, the top suction dust removal mechanism is arranged above the taphole, and the side suction dust removal mechanisms are arranged on two sides of the taphole.
5. The blast furnace stokehold dust removal control system of claim 4, wherein the first control module comprises a top suction control module electrically connected to the top suction dust removal mechanism and a side suction control module electrically connected to the side suction dust removal mechanism.
6. The blast furnace stokehold dust removal control system of claim 3 or 5, wherein the spout dust removal device comprises a first dust removal mechanism and a second dust removal mechanism, and the first dust removal mechanism and the second dust removal mechanism are respectively arranged on the two sides of the tapping of the swing spout.
7. The blast furnace stokehole dust removal control system of claim 6, wherein a first molten iron collecting line and a second molten iron collecting line are respectively arranged on two sides below the swing chute, a plurality of molten iron tanks are arranged on the first molten iron collecting line and the second molten iron collecting line, the first molten iron collecting line is arranged on the same side as the first dust removing mechanism, and the second molten iron collecting line is arranged on the same side as the second dust removing mechanism.
8. The blast furnace stokehold dust removal control system according to claim 7, wherein when the swing chute is inclined downward toward the first molten iron collecting line, the fifth control module controls the first dust removal mechanism to increase dust removal efficiency and controls the second dust removal mechanism to decrease dust removal efficiency, and when the swing chute is inclined downward toward the second molten iron collecting line, the fifth control module controls the second dust removal mechanism to increase dust removal efficiency and controls the first dust removal mechanism to decrease dust removal efficiency.
9. The blast furnace stokehold dust removal control system of claim 8, wherein the fifth control module comprises a first spout dust removal control module electrically connected to the first dust removal mechanism and a second spout dust removal control module electrically connected to the second dust removal mechanism.
10. A blast furnace front dust removal control method, characterized in that the blast furnace front dust removal control method is implemented by adopting the blast furnace front dust removal control system according to any one of claims 1 to 9, comprising: Acquiring a tapping operation starting signal of the tapping machine; after a tapping operation starting signal of the tapping machine is obtained, the control unit controls the stokehole dust removal equipment to be started and enter a first preset dust removal efficiency working state based on the tapping operation starting signal of the tapping machine; Acquiring a stop signal of the plugging operation of the hydraulic mud gun; After the blocking operation stop signal of the hydraulic mud gun is obtained, the control unit controls the stokehold dust removal equipment to reduce the dust removal efficiency to enter a second preset dust removal efficiency working state based on the blocking operation stop signal of the hydraulic mud gun; acquiring a molten iron conveying end signal of the swing chute; after the molten iron conveying end signal of the swing chute is obtained, the control unit controls the stokehole dust removal equipment to be closed based on the molten iron conveying end signal of the swing chute.
11. The method for controlling dust removal in front of a blast furnace according to claim 10, wherein when a feed motor of the tapping machine starts feeding, the tapping machine sends a tapping operation start signal to the control unit, when a pressure maintaining of a rotary cylinder of the hydraulic gun reaches a preset time requirement, the hydraulic gun sends a plugging operation stop signal to the control unit, and when a driving assembly of the swing chute stops outputting, the swing chute sends a molten iron conveying end signal to the control unit.

Description

Blast furnace front dust removal control system and method Technical Field The invention relates to the technical field of dust removal in front of a blast furnace, in particular to a dust removal control system and method in front of the blast furnace. Background The operation of the blast furnace is that the place for slag tapping and iron slag treatment of the blast furnace comprises the operation taking slag tapping as main content, the maintenance of a tap hole formed for slag tapping, the maintenance of a skimming tool and an iron slag runner, the maintenance of tapping equipment in front of the furnace, the replacement of a tuyere and the like. Because the blast furnace still has a large amount of smoke and dust dissipation problem even if the blast furnace is shielded by the slag runner cover plate in the tapping process, the blast furnace not only causes great environmental pollution, but also causes great threat to the health of operators in front of the blast furnace. So a dust removing device is usually arranged in the area where the smoke dust escapes in front of the furnace to reduce the smoke dust pollution and improve the operation environment in front of the furnace. The blast furnace stokehold dust removing equipment mainly comprises a tap hole dust removing device, a skimming device dust removing device, a branch tap hole dust removing device, a slag hole dust removing device, a chute dust removing device and the like. At present, the furnace front dust removing equipment is in an independent control state, is simultaneously opened or closed in a manual control or electric control mode in the tapping process, and has the problems of inconvenient operation, untimely dust removal and the like. Disclosure of Invention The invention aims to provide a blast furnace front dust removal control system, which at least solves the problem of inconvenient operation caused by independent control of blast furnace front dust removal equipment in the prior art. The above object of the present invention can be achieved by the following technical solutions: The invention provides a blast furnace front dust removal control system which comprises an iron notch opening machine, a hydraulic mud gun, a swinging chute mouth, front dust removal equipment and a control unit, wherein the iron notch opening machine is used for opening a blast furnace iron notch, the hydraulic mud gun is used for sealing the blast furnace iron notch after tapping, the swinging chute mouth is used for receiving molten iron flowing out of a branch iron runner and sending the molten iron into a molten iron tank, the front dust removal equipment is electrically connected with the iron notch opening machine, the hydraulic mud gun and the swinging chute mouth through the control unit, when the iron notch opening machine starts to open an iron notch operation, the control unit controls the front dust removal equipment to be started and enter a first preset dust removal efficiency working state, when the hydraulic mud gun ends a blocking operation, the control unit controls the front dust removal equipment to reduce dust removal efficiency and enter a second preset dust removal efficiency working state, and when the swinging chute mouth ends a molten iron conveying operation, the control unit controls the front dust removal equipment to be closed. Specifically, the stokehold dust collecting equipment comprises a tap hole dust collecting device, a skimming device dust collecting device, a branch tap hole dust collecting device, a slag hole dust collecting device and a chute dust collecting device which are electrically connected with the output end of the control unit. Preferably, the control unit comprises a first control module, a second control module, a third control module, a fourth control module and a fifth control module, wherein the first control module is used for controlling the start-stop and dust removal efficiency of the tap hole dust removal device, the second control module is used for controlling the start-stop and dust removal efficiency of the slag skimmer dust removal device, the third control module is used for controlling the start-stop and dust removal efficiency of the branch iron runner dust removal device, the fourth control module is used for controlling the start-stop and dust removal efficiency of the slag runner dust removal device, and the fifth control module is used for controlling the start-stop and dust removal efficiency of the spout dust removal device. Preferably, the iron notch dust removing device comprises a top suction dust removing mechanism and side suction dust removing mechanisms, wherein the top suction dust removing mechanism is arranged above the iron notch, and the side suction dust removing mechanisms are arranged on two sides of the iron notch. Preferably, the first control module comprises a top suction control module electrically connected with the top suction dust removing mechanism and a