CN110631374A - Water quenching slag discharge device and process for boiling chlorination furnace - Google Patents

Water quenching slag discharge device and process for boiling chlorination furnace Download PDF

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Publication number
CN110631374A
CN110631374A CN201910993888.6A CN201910993888A CN110631374A CN 110631374 A CN110631374 A CN 110631374A CN 201910993888 A CN201910993888 A CN 201910993888A CN 110631374 A CN110631374 A CN 110631374A
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China
Prior art keywords
slag
tank body
pipe
water
boiling chlorination
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Pending
Application number
CN201910993888.6A
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Chinese (zh)
Inventor
廉荣申
王树茂
赵海涛
马学涛
高殿坤
高斌
刘少民
李卡佳
邱建平
李振松
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China Aerospace Hertz Tangshan Titanium Industry Co Ltd
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China Aerospace Hertz Tangshan Titanium Industry Co Ltd
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Application filed by China Aerospace Hertz Tangshan Titanium Industry Co Ltd filed Critical China Aerospace Hertz Tangshan Titanium Industry Co Ltd
Priority to CN201910993888.6A priority Critical patent/CN110631374A/en
Publication of CN110631374A publication Critical patent/CN110631374A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1545—Equipment for removing or retaining slag
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Furnace Details (AREA)

Abstract

The invention relates to a water quenching slag discharge device and a water quenching slag discharge process for a boiling chlorination furnace, and belongs to the technical field of titanium tetrachloride production. The technical scheme is as follows: the upper part (20) of the tank body and the middle part (21) of the tank body are welded into an integral structure, the middle part (21) of the tank body and the lower part (28) of the tank body are connected through a connecting flange (27), the upper part (20) of the tank body is provided with a slag inlet (32) and an overflow pipe (31), the middle part (21) of the tank body is provided with an inspection port (22) and a slag flushing pipe (23), the slag flushing pipe (23) is connected with a circulating water pipe (25) through a connecting short joint (24), the circulating water pipe is connected with a submersible sewage pump (14), and the submersible sewage pump (14) is arranged in a slag-water separation tank (8); the lower part of the tank body is provided with a screen (26) and a slag discharging pipe (30) leading to a slag-water separation pool. The invention has the beneficial effects that: the problem of environmental pollution caused by the overflow of flue gas in the slag discharge process can be avoided, and meanwhile, the slag does not need to be cooled in a standing way and does not need to be provided with an independent slag yard.

Description

Water quenching slag discharge device and process for boiling chlorination furnace
Technical Field
The invention relates to a water quenching slag discharge device and a water quenching slag discharge process of a boiling chlorination furnace, and belongs to the technical field of titanium tetrachloride production processes.
Background
Currently, in the production process of titanium tetrachloride, the slag which is not completely reacted needs to be discharged so as to ensure that the production is normally carried out. In the production process, because the boiling chlorination furnace has different structures, two slag discharging modes are generally adopted, wherein one mode is that slag is discharged from the upper part of the chlorination furnace, and the slag enters a cyclone dust collector at the top of the furnace by virtue of ascending air flow and is separated, but the mode has large equipment investment, high failure rate and prominent coking condition in the furnace; the other is slag discharge at the lower part (bottom or side part) of the chlorination furnace, and slag is discharged from a slag discharge port at the bottom or side surface of the chlorination furnace by means of self gravity. In the traditional lower slag discharging operation process, a large amount of gas in the furnace overflows along with slag, inorganization discharge is caused, the surrounding environment is polluted, production facilities are corroded, meanwhile, high-temperature slag discharged into a slag box needs to be stored in a closed slag yard for cooling, but the slag yard environment is poor, and the environmental protection requirement is difficult to meet.
Disclosure of Invention
The invention aims to provide a water quenching slag discharging device and a water quenching slag discharging process of a boiling chlorination furnace, which can solve the problem of environmental pollution caused by the overflow of flue gas in the slag discharging process, simultaneously, slag does not need to be kept still for cooling, a separate slag field does not need to be arranged, the field is saved, and the problems in the background art are solved.
The technical scheme of the invention is as follows:
a boiling chlorination furnace water quenching slag discharging device comprises a boiling chlorination furnace, a furnace bottom slag discharging port, a water quenching slag tank, a slag-water separation tank, a submersible sewage pump, an inspection port, a slag flushing pipe, a connecting short section, a circulating water pipe, a screen, a connecting flange, supporting legs, a slag discharging pipe, an overflow pipe and a slag inlet, wherein the bottom of the boiling chlorination furnace is provided with the furnace bottom slag discharging port; the upper part of the tank body is provided with a slag inlet and an overflow pipe leading to the slag-water separation tank, the slag inlet is positioned below a furnace bottom slag discharge port of the boiling chlorination furnace, the middle part of the tank body is provided with an inspection port and a slag flushing pipe, the slag flushing pipe is connected with one end of a circulating water pipe through a connecting short section, the other end of the circulating water pipe is connected with a submersible sewage pump, and the submersible sewage pump is arranged in the slag-water separation tank; the lower part of the tank body is provided with a screen and a slag discharging pipe leading to the slag-water separation tank, and the screen at the lower part of the tank body is close to the middle part of the tank body.
The slag flushing direction of the slag flushing pipe faces the screen.
And a circulating water valve is arranged on the circulating water pipe.
The device is characterized in that a furnace bottom deslagging mechanism and a gas collecting hood are arranged on a furnace bottom deslagging port of the boiling chlorination furnace, the gas collecting hood is located between the boiling chlorination furnace and a water quenching slag tank, the furnace bottom deslagging mechanism comprises a deslagging rod, a U-shaped connecting rod, a deslagging pressure plate, sealing mud and a suspender, the upper end of the suspender is fixed at the bottom of the boiling chlorination furnace, the lower end of the suspender is connected to the deslagging rod, the deslagging rod is connected with the deslagging pressure plate through the U-shaped connecting rod, the deslagging pressure plate is matched with the furnace bottom deslagging port, and the deslagging pressure plate and the furnace bottom deslagging port are provided with the sealing.
The hanging rod is perpendicular to the slag discharging rod.
The water quenching slag discharge process of the boiling chlorination furnace adopts the water quenching slag discharge device of the boiling chlorination furnace, and comprises the following steps:
opening a circulating water valve, and starting a submersible sewage pump;
secondly, manually operating a slag discharging rod, and enabling a slag discharging pressure plate to leave a slag discharging port at the bottom of the furnace through a U-shaped connecting rod;
dredging the furnace bottom slag discharge hole to make the sealing mud fall off from the furnace bottom slag discharge hole, so that the furnace slag flows into the water quenching slag tank from the slag inlet;
and fourthly, after being sprayed and quenched by the slag flushing water sprayed out from the slag flushing pipe at a high speed, the slag flows into the lower part of the tank body after being filtered by the screen, and is discharged into the slag-water separation tank through the slag discharging pipe to be naturally settled, and the agglomerated slag is left on the screen and is periodically cleaned through an inspection hole by an operator.
The invention has the beneficial effects that: the process is simple and practical, the problem of environmental pollution caused by the overflow of the flue gas in the slag discharge process is solved, and the service lives of equipment and plants are prolonged. Meanwhile, the slag does not need to be kept still for cooling, so that a separate slag field does not need to be arranged. And (4) carrying out gravity separation on the water-quenched slag on site, and recovering rutile and petroleum coke in the water-quenched slag. The link of slag transportation is cancelled, labor and field are saved, and the overall working efficiency is improved.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of a slagging mechanism of the present invention;
FIG. 3 is a schematic structural view of a water quenching slag pot according to the present invention;
in the figure: 1. a boiling chlorination furnace; 2. a furnace bottom slag discharge port; 3. a furnace bottom deslagging mechanism; 4. a gas-collecting hood; 5. a circulating water valve; 6. a water quenching slag pot; 7. a circulating water system; 8. a slag-water separation tank; 9. a cloud tin shaking table hopper; 10. a flush valve; 11. a cloud tin shaking table; 12. a slag box; 13. an electric grab bucket; 14. a submersible sewage pump; 15. a slag discharging rod; 16. a U-shaped connecting rod; 17. a deslagging pressure plate; 18. sealing the mud; 19. a boom; 20. the upper part of the tank body; 21. the middle part of the tank body; 22. an inspection opening; 23. a slag flushing pipe; 24. connecting short sections; 25. a circulating water pipe; 26. screening a screen; 27. a connecting flange; 28. the lower part of the tank body; 29. a support leg; 30. a slag pipe; 31. an overflow pipe; 32. a slag inlet.
Detailed Description
The invention is further illustrated by way of example in the following with reference to the accompanying drawings.
Referring to the attached drawings 1, 2 and 3, the water quenching slag discharging device for the boiling chlorination furnace comprises the boiling chlorination furnace 1, a furnace bottom slag discharging port 2, a water quenching slag tank 6, a slag-water separation tank 8, a submersible sewage pump 14, an inspection port 22, a slag flushing pipe 23, a connecting short section 24, a circulating water pipe 25, a screen 26, a connecting flange 27, a supporting leg 29, a slag discharging pipe 30, an overflow pipe 31 and a slag inlet 32, wherein the furnace bottom slag discharging port 2 is arranged at the bottom of the boiling chlorination furnace 1, the water quenching slag tank 6 comprises a tank body upper part 20, a tank body middle part 21 and a tank body lower part 28, the tank body middle part 21 is cylindrical, the tank body upper part 20 and the tank body lower part 28 are both conical shapes matched with the tank body middle part 21, the tank body upper part 20 and the tank body middle part 21 are welded into an integral structure, the tank body middle part 21 and the tank body; the upper part 20 of the tank body is provided with a slag inlet 32 and an overflow pipe 31 leading to the slag-water separation tank 8, the slag inlet 32 is positioned below a furnace bottom slag discharge port 2 of the boiling chlorination furnace 1, the middle part 21 of the tank body is provided with an inspection port 22 and a slag flushing pipe 23, the slag flushing pipe 23 is connected with one end of a circulating water pipe 25 through a connecting short joint 24, the other end of the circulating water pipe 25 is connected with a submersible sewage pump 14, and the submersible sewage pump 14 is arranged in the slag-water separation tank 8; the lower part 28 of the tank is provided with a screen 26 and a slag outlet pipe 30 leading to the slag-water separation tank 8, and the screen 26 of the lower part 28 of the tank is close to the middle 21 of the tank.
In this embodiment, referring to fig. 1 and 2, a furnace bottom slag discharge mechanism 3 and a gas collecting hood 4 are arranged on a furnace bottom slag discharge port 2 of a boiling chlorination furnace 1, the gas collecting hood 4 is located between the boiling chlorination furnace 1 and a water quenching slag tank 6, the furnace bottom slag discharge mechanism 3 comprises a slag discharge rod 15, a U-shaped connecting rod 16, a slag discharge pressure plate 17, sealing mud 18 and a suspender 19, the upper end of the suspender 19 is fixed at the bottom of the boiling chlorination furnace 1, the lower end of the suspender 19 is connected to the slag discharge rod 15, the suspender 19 is arranged perpendicular to the slag discharge rod 15, the slag discharge rod 15 is connected with the slag discharge pressure plate 17 through the U-shaped connecting rod 16, the slag discharge pressure plate 17 is matched with the furnace bottom slag discharge port 2, and the sealing mud 18.
Referring to the attached figures 1, 2 and 3, the slag-water separation tank 8 is a corrosion-resistant cement tank. Cloud tin table 11 model: s-6, manufacturer: the Yunan tin table is produced according to the standard drawing of Yunan tin company, and is mainly suitable for various non-ferrous metalsThe tin-cloud table concentrator has the characteristics of stable performance, high and stable beneficiation efficiency, low noise, convenience in use and maintenance and the like. Electric grab bucket 13 model: 1m3And (3) manufacturer: the south of Henan Guangxing heavy machinery, Inc.; submersible sewage pump 14 model: WQ65-35-60, manufacturer: shanghai' an Huanyuan pump Co., Ltd.
The circulating water system 7 consists of a submersible sewage pump 14, a circulating water pipe 25, a circulating water valve 5, a connecting short joint 24 and a slag flushing pipe 23.
Referring to the attached figures 1, 2 and 3, before discharging the chlorination furnace slag, the addition of the mixture and the chlorine gas into the boiling chlorination furnace 1 needs to be stopped, and the micro-positive pressure in the boiling chlorination furnace 1 needs to be maintained. The circulating water valve 5 is opened, the submersible sewage pump 14 is started, the slag flushing water flows normally in the circulating water system 7, the slag discharging rod 15 on the hanging rod 19 is operated manually after the slag flushing water operates normally, and the slag discharging pressure plate 17 is separated from the slag discharging port 2 of the furnace bottom through the U-shaped connecting rod 16, so that the slag discharging mechanism 3 of the furnace bottom is opened. Then, the furnace bottom slag discharge port 2 is dredged by using an iron drill, so that the sealing mud 18 falls off from the furnace bottom slag discharge port 2, thereby enabling the slag to flow into the water quenching slag tank 6 from the slag inlet 32 and fall into the water quenching slag tank through the upper part 20 of the tank body and the middle part 21 of the tank body, then the slag is sprayed and water quenched by the slag flushing water sprayed out at high speed from the slag flushing pipe 23, filtered by the screen 26 and flows into the lower part 28 of the tank body, then the slag is discharged from the slag discharging pipe 30, finally the slag is converged into the slag flushing channel and flows into the slag-. The excess slag flushing water in the water quenching slag tank 6 is discharged from the overflow pipe 31 and flows into the slag-water separation tank 8, and the agglomerated slag is left on the screen 26 and is periodically removed by the inspection opening 22.
The slag-off flue gas is collected by the gas-collecting hood 4 and introduced into the flue gas absorption tower for treatment. During the slag discharging process, the water feeding condition of the submersible sewage pump 14 and the slag discharging condition of the water quenching slag tank 6 are observed. When the slag discharge reaches the set time, the slag discharge rod 15 on the suspension rod 19 is manually operated, and the slag discharge pressure plate 17 is close to the furnace bottom slag discharge port 2 through the U-shaped connecting rod 16, so that the sealing mud 18 blocks the furnace bottom slag discharge port 2, and the furnace bottom slag discharge mechanism 3 is closed.
After the circulating water system 7 continues to run for 5 minutes, the submersible sewage pump 14 is stopped and the circulating water valve 5 is closed. And (3) periodically operating an electric grab bucket 13 above the slag-water separation tank 8 to convey the slag at the bottom of the slag-water separation tank 8 into a cloud tin shaking table hopper 9, opening a flushing valve 10, starting a cloud tin shaking table 11, performing gravity separation on the slag entering the bed surface of the cloud tin shaking table 11, introducing separated petroleum coke and rutile into respective slag boxes 12, and then respectively conveying the petroleum coke and the rutile to an airing field for airing and returning to a titanium tetrachloride production system for recycling.

Claims (6)

1. The utility model provides a boiling chlorination furnace shrend sediment device that arranges which characterized in that: comprises a boiling chlorination furnace (1), a furnace bottom slag discharge port (2), a water quenching slag tank (6), a slag-water separation tank (8), a submersible sewage pump (14), an inspection port (22), a slag flushing pipe (23), a connecting short section (24), a circulating water pipe (25), a screen mesh (26), a connecting flange (27), a support leg (29), a slag discharging pipe (30), an overflow pipe (31) and a slag inlet (32), wherein the bottom of the boiling chlorination furnace (1) is provided with the furnace bottom slag discharge port (2), the water quenching slag tank (6) comprises a tank body upper part (20), a tank body middle part (21) and a tank body lower part (28), the tank body middle part (21) is cylindrical, the tank body upper part (20) and the tank body lower part (28) are both conical shapes matched with the tank body middle part (21), the tank body upper part (20) and the tank body middle part (21) are welded into an integral structure, and the tank body middle part (21) and the tank body, the lower part (28) of the tank body is fixed on the supporting leg (29); the upper part (20) of the tank body is provided with a slag inlet (32) and an overflow pipe (31) leading to the slag-water separation tank (8), the slag inlet (32) is positioned below a furnace bottom slag discharge port (2) of the boiling chlorination furnace (1), the middle part (21) of the tank body is provided with an inspection port (22) and a slag flushing pipe (23), the slag flushing pipe (23) is connected with one end of a circulating water pipe (25) through a connecting short joint (24), the other end of the circulating water pipe (25) is connected with a submersible sewage pump (14), and the submersible sewage pump (14) is arranged in the slag-water separation tank (8); the lower part (28) of the tank body is provided with a screen (26) and a slag discharging pipe (30) leading to the slag-water separation tank (8), and the screen (26) at the lower part (28) of the tank body is close to the middle part (21) of the tank body.
2. The water quenching slag discharging device of the boiling chlorination furnace as claimed in claim 1, wherein: the slag flushing direction of the slag flushing pipe (23) faces the screen (26).
3. The water quenching slag discharging device of the boiling chlorination furnace as claimed in claim 1, wherein: and a circulating water valve (5) is arranged on the circulating water pipe (25).
4. The water quenching slag discharging device of the boiling chlorination furnace as claimed in claim 1, wherein: be equipped with end slag discharging mechanism (3) and gas collecting hood (4) on the stove bottom row of cinder notch (2) of boiling chlorination stove (1), gas collecting hood (4) are located between boiling chlorination stove (1) and water quenching sediment jar (6), end slag discharging mechanism (3) contain row sediment pole (15), U-shaped connecting rod (16), arrange sediment pressure disk (17), sealed mud (18) and jib (19), and the bottom at boiling chlorination stove (1) is fixed to the upper end of jib (19), and the lower extreme of jib (19) is connected on arranging sediment pole (15), arrange sediment pole (15) and be connected with arranging sediment pressure disk (17) through U-shaped connecting rod (16), arrange sediment pressure disk (17) and stove bottom row of cinder notch (2) phase-match, arrange sediment pressure disk (17) and be equipped with sealed mud (18) on end row of sediment mouth (2).
5. The water quenching slag discharging device of the boiling chlorination furnace as claimed in claim 4, wherein: the hanging rod (19) is perpendicular to the slag discharging rod (15).
6. A boiling chlorination furnace water quenching slag discharging process adopts the boiling chlorination furnace water quenching slag discharging device defined by any one of claims 1-5, and is characterized by comprising the following steps:
opening a circulating water valve (5) and starting a submersible sewage pump (14);
secondly, manually operating a slag discharging rod (15), and enabling a slag discharging pressure plate (17) to leave a furnace bottom slag discharging port (2) through a U-shaped connecting rod (16);
thirdly, dredging the furnace bottom slag discharge port (2) to lead the sealing mud (18) to fall off from the furnace bottom slag discharge port (2), thereby leading the slag to flow into the water quenching slag pot (6) from the slag inlet (32);
and fourthly, after being sprayed and water-quenched by the slag flushing water sprayed out at high speed from the slag flushing pipe (23), the slag flows into the lower part (28) of the tank body after being filtered by the screen (26) and is discharged into the slag-water separation tank (8) through the slag discharging pipe (30) to be naturally settled, and the agglomerated slag is left on the screen (26) and is periodically cleaned by an operator through the inspection hole (22).
CN201910993888.6A 2019-10-18 2019-10-18 Water quenching slag discharge device and process for boiling chlorination furnace Pending CN110631374A (en)

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CN201910993888.6A CN110631374A (en) 2019-10-18 2019-10-18 Water quenching slag discharge device and process for boiling chlorination furnace

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Application Number Priority Date Filing Date Title
CN201910993888.6A CN110631374A (en) 2019-10-18 2019-10-18 Water quenching slag discharge device and process for boiling chlorination furnace

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Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114162855A (en) * 2021-12-16 2022-03-11 朝阳百盛钛业股份有限公司 Technology for slag discharge and slag water quenching without stopping chlorine in boiling chlorination

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114162855A (en) * 2021-12-16 2022-03-11 朝阳百盛钛业股份有限公司 Technology for slag discharge and slag water quenching without stopping chlorine in boiling chlorination

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