CN114146559A - Efficient sulfur-removing continuous copper-removing furnace and sulfur-removing process thereof - Google Patents

Efficient sulfur-removing continuous copper-removing furnace and sulfur-removing process thereof Download PDF

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Publication number
CN114146559A
CN114146559A CN202111680880.8A CN202111680880A CN114146559A CN 114146559 A CN114146559 A CN 114146559A CN 202111680880 A CN202111680880 A CN 202111680880A CN 114146559 A CN114146559 A CN 114146559A
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China
Prior art keywords
decoppering
continuous
flue
furnace
furnace according
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CN202111680880.8A
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Chinese (zh)
Inventor
谢斌
荆旭冬
赵海亮
王浩
段永红
陈龙
胡磷
刘正祥
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Jiangxi Copper Lead Zinc Metal Co ltd
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Jiangxi Copper Lead Zinc Metal Co ltd
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Priority to CN202111680880.8A priority Critical patent/CN114146559A/en
Publication of CN114146559A publication Critical patent/CN114146559A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81—Solid phase processes
    • B01D53/83—Solid phase processes with moving reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/508—Sulfur oxides by treating the gases with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/30—Alkali metal compounds
    • B01D2251/304—Alkali metal compounds of sodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/025—Other waste gases from metallurgy plants

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a continuous copper removing furnace for efficient sulfur removal and a sulfur removal process thereof.

Description

Efficient sulfur-removing continuous copper-removing furnace and sulfur-removing process thereof
Technical Field
The invention belongs to the field of lead fire refining, and particularly relates to a continuous copper removing furnace capable of efficiently removing sulfur and a sulfur removing process thereof.
Background
The continuous decoppering furnace is important equipment for the fire refining process of the crude lead, and the continuous decoppering furnace mainly has the function of realizing the continuous decoppering of the crude lead, so that sulfur needs to be continuously added into the furnace. The added sulfur can generate a large amount of sulfur dioxide in the continuous copper removing furnace, and the atmosphere pollution is caused when the waste gas is discharged; meanwhile, due to the strong corrosivity of sulfur dioxide, the furnace life of the continuous copper removing furnace is shortened, so that the economic benefit and the production efficiency are influenced.
Disclosure of Invention
The invention discloses a continuous copper removing furnace capable of efficiently removing sulfur and a sulfur removing process thereof, which can effectively reduce the concentration of sulfur dioxide in the continuous copper removing furnace and the content of sulfur dioxide in waste gas of the continuous copper removing furnace, prevent the furnace life of the continuous copper removing furnace from being shortened due to the corrosion of sulfur dioxide, effectively prevent air pollution and have higher economic benefit and environmental benefit.
In order to achieve the purpose, the invention adopts the following technical scheme:
a continuous decoppering furnace for efficient desulphurization comprises a decoppering furnace body 1, wherein the decoppering furnace body 1 is provided with a lead inlet 2, a scum outlet 3, a vulcanizing agent feeding port 4 and a lead liquid outlet 5, the side wall of the decoppering furnace body 1 is communicated with a plurality of flues 6, and the flues 6 are additionally provided with a desulphurization device 8;
the specific structure of the desulfurization device 8 is as follows: the bottom of a desulfurizing agent hopper 801 is connected with a stirring bin 802, the bottom of the stirring bin 802 is connected with a discharging pipe 803, the discharging pipe 803 is connected with a discharging hopper 804, and the bottom of the discharging hopper 804 is connected with a conveying pipe 805; a stirrer 806 is arranged in the stirring bin 802, a discharging spiral 807 is arranged in the discharging pipe 803, and the stirrer 806 and the discharging spiral 807 are connected with a motor 809 through a linkage 808; one end of the conveying pipe 805 is communicated with the flue 6, and the other end of the conveying pipe is provided with a compressed air interface 810.
Furthermore, 2 top observation holes 7 are arranged at the top of the decoppering furnace body 1.
Furthermore, the number of the flues 6 is 2, and the flues are respectively positioned at two sides of the decoppering furnace body 1.
Further, the motor 809 is used in combination with a speed reducer to adjust the rotation speed.
Further, a cleaning port 9 is arranged at the bottom of the flue 6.
Further, the outlet end of the flue 6 is connected with a filter.
Further, the feeding pipe 803 is integrally formed at the bottom of the stirring bin 802.
The desulfurizer is added into the desulfurization device, so that sulfur dioxide in the flue and the copper removal furnace body can be effectively absorbed. The desulfurizer is sodium carbonate or sodium bicarbonate.
Because sodium carbonate or sodium bicarbonate is a solid agent, the desulfurizer is easy to settle in the flue, and is concentrated after entering the flue through the desulfurization device, and the contact with waste gas is insufficient, so that the dosage of the desulfurizer needs to be increased, and a good desulfurization effect can be achieved. Therefore, an elastic vibration reflection device is added in the flue opposite to the outlet of the conveying pipe in our direction, and the desulfurizer is ejected upwards through the elastic vibration reflection device, so that the sedimentation of the desulfurizer is effectively reduced; and because the elastic vibration reflection device is in a damping vibration state under the action of the waste gas and the desulfurizer conveying gas, the upward ejection angles of the desulfurizer are different, the desulfurization effect is greatly improved, and thus, the using amount of the desulfurizer can be effectively reduced.
The elastic vibration reflection device comprises a tongue-shaped plate 61, one end of the tongue-shaped plate 61 is movably connected with a connecting bolt 65, and the connecting bolt 65 is fixed on the inner wall of the flue 6; the bottom of the other end of the tongue-shaped plate 61 is connected with the flue 6 through a bottom spring 62, and a top support rod 63 is arranged at the top of the other end of the tongue-shaped plate 61.
When the elastic vibration reflection device works, the tongue-shaped plate forms a damping vibration shape by a bottom spring under the action of waste gas and desulfurizer conveying gas, and meanwhile, the arrangement of the top supporting rod can effectively prevent the tongue-shaped plate from completely sealing the flue.
Further, a supporting block 64 is mounted on the top support rod 63 to protect the inner wall of the flue.
The invention has the advantages that:
1. the desulfurizer is simple in structure, reasonable in design and convenient to use, and the desulfurizer is added through the desulfurizer, so that sulfur dioxide in the flue and the copper removing furnace body is effectively absorbed, the concentration of sulfur dioxide in the copper removing furnace body and waste gas is reduced, the furnace life of the continuous copper removing furnace is prevented from being shortened due to corrosion of sulfur dioxide, air pollution is effectively prevented, and high economic benefit and environmental benefit are achieved;
2. the elastic vibration reflection device is arranged in the flue and forms a damping vibration shape under the action of the waste gas and the desulfurizer conveying gas, so that the upward ejection angles of the desulfurizer are different, the desulfurization effect is greatly improved, and the using amount of the desulfurizer is effectively reduced.
Drawings
FIG. 1 is a schematic view of a continuous decoppering furnace according to the present invention;
FIG. 2 is an enlarged view of a part of a desulfurization apparatus in accordance with example 1 of the present invention;
FIG. 3 is an enlarged view of a part of a desulfurizing device in example 2 of the present invention;
FIG. 4 is a front view of the elastic shock reflecting device of the present invention;
in the figure, 1-a decoppering furnace body, 2-a lead inlet, 3-a scum outlet, 4-a vulcanizing agent inlet, 5-a lead liquid outlet, 6-a flue, 61-a tongue plate, 62-a bottom spring, 63-a top support rod, 64-a support block, 65-a connecting bolt, 7-a top observation hole, 8-a desulfurizing device, 801-a desulfurizing agent hopper, 802-a stirring bin, 803-a blanking pipe, 804-a blanking hopper, 805-a conveying pipe, 806-a stirrer, 807-a blanking spiral, 808-a linkage device, 809-a motor, 810-a compressed air interface and 9-a cleaning port
Detailed Description
Example 1
As shown in figure 1, the continuous decoppering furnace for efficient desulphurization comprises a decoppering furnace body 1, wherein the decoppering furnace body 1 is provided with a lead inlet 2, a scum outlet 3, a vulcanizing agent inlet 4 and a lead liquid outlet 5, the side walls of two sides of the decoppering furnace body 1 are communicated with 2 flues 6, the top of the decoppering furnace body 1 is provided with 2 top observation holes 7, and the flues 6 are additionally provided with a desulphurization device 8;
the specific structure of the desulfurization device 8 is as follows: the bottom of a desulfurizer hopper 801 is connected with a stirring bin 802, the bottom of the stirring bin 802 is connected with a blanking pipe 803, the blanking pipe 803 is integrally formed at the bottom of the stirring bin 802, the blanking pipe 803 is connected with a blanking hopper 804, and the bottom of the blanking hopper 804 is connected with a conveying pipe 805; a stirrer 806 is arranged in the stirring bin 802, a blanking screw 807 is arranged in the blanking pipe 803, the stirrer 806 and the blanking screw 807 are connected with a motor 809 through a linkage 808, and the motor 809 is used with a speed reducer to adjust the rotating speed; one end of the conveying pipe 805 is communicated with the flue 6, and the other end of the conveying pipe is provided with a compressed air interface 810; the bottom of the flue 6 is provided with a cleaning port 9, and the outlet end of the flue 6 is connected with a filter.
The working principle is as follows:
when the continuous copper removing furnace works, lead liquid is introduced from a lead inlet, sulfur or other vulcanizing agents are introduced from a vulcanizing agent adding inlet, copper matte slag is discharged from a scum outlet, and the lead liquid after copper removing is discharged from a lead liquid outlet; adding a desulfurizer into a desulfurizer hopper, and dispersing the desulfurizer in a stirring bin by a stirrer to prevent blockage by accumulated materials; the desulfurizer enters a blanking pipe, enters a blanking hopper under the action of a blanking screw and then enters a conveying pipe under the action of gravity, and the desulfurizer is conveyed into a flue in the conveying pipe by virtue of accessed compressed air, so that the conveying pipe is ensured not to have hidden danger of blockage; the desulfurizer is discharged along with the waste gas and is collected by the filter, and a small amount of settled desulfurizer can be cleaned by the cleaning port.
The test was carried out in a stable, continuously operating decoppering furnace in which the initial concentration of sulfur dioxide in the off-gas was 479ppm and the off-gas flow rate was about 45300m3H; the concentration of sulfur dioxide in the waste gas can be reduced to 253ppm by adding 48kg of sodium bicarbonate in the waste gas per hour, so that the concentration of the sulfur dioxide in the waste gas meets the requirement of the directly discharged waste gas that the concentration of the sulfur dioxide is less than or equal to 400 ppm. After one day of continuous operation, the total amount of solid cement cleaned through the cleaning port was 51.75 kg.
Example 2
On the basis of the embodiment 1, an elastic vibration reflection device is additionally arranged in the flue opposite to the outlet of the conveying pipe, and comprises a tongue-shaped plate 61, one end of the tongue-shaped plate 61 is movably connected with a connecting bolt 65, and the connecting bolt 65 is fixed on the inner wall of the flue 6; the bottom of the other end of the tongue-shaped plate 61 is connected with the flue 6 through a bottom spring 62, and the top of the other end of the tongue-shaped plate 61 is provided with a top supporting rod 63; a support block 64 is mounted on the top strut 63.
When the elastic vibration reflection device works, the tongue-shaped plate forms a damping vibration shape by a bottom spring under the action of waste gas and desulfurizer conveying gas, and meanwhile, the arrangement of the top support rod can effectively prevent the tongue-shaped plate from completely sealing the flue; the supporting block can protect the inner wall of the flue.
The desulfurizer is ejected upwards through the elastic vibration reflection device, so that the sedimentation of the desulfurizer is effectively reduced; and because the elastic vibration reflection device is in a damping vibration state under the action of the waste gas and the desulfurizer conveying gas, the upward ejection angles of the desulfurizer are different, the desulfurization effect is greatly improved, and thus, the using amount of the desulfurizer can be effectively reduced.
The test was carried out in the same decoppering furnace as in example 1, in which the initial concentration of sulfur dioxide in the off-gas was 485ppm and the off-gas flow rate was about 45600m3H; the sulfur dioxide concentration in the exhaust gas was reduced to 208ppm by adding 31.5kg of sodium bicarbonate per hour to the exhaust gas. After one day of continuous operation, the total amount of solid cement cleaned through the cleaning port was 10.65 kg.
Compared with example 1, the frequency of cleaning the flue only needs to be maintained at 1/5-1/3 of example 1 because less solid binder is settled.
And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims (10)

1. The utility model provides a continuous decoppering stove of high-efficient sulphur removal which characterized in that: the continuous decoppering furnace comprises a decoppering furnace body, wherein a lead inlet, a scum outlet, a vulcanizing agent feeding port and a lead liquid outlet are formed in the decoppering furnace body, the side wall of the decoppering furnace body is communicated with a plurality of flues, and a desulfurizing device is additionally arranged on each flue;
the desulfurization device has the following specific structure: the bottom of the desulfurizer hopper is connected with a stirring bin, the bottom of the stirring bin is connected with a blanking pipe, the blanking pipe is connected with a blanking hopper, and the bottom of the blanking hopper is connected with a conveying pipe; a stirrer is arranged in the stirring bin, a discharging screw is arranged in the discharging pipe, and the stirrer and the discharging screw are connected with a motor through a linkage device; one end of the conveying pipe is communicated with the flue, and the other end of the conveying pipe is a compressed air interface.
2. The continuous decoppering furnace according to claim 1, characterized in that: the top of the decoppering furnace body is provided with 2 top observation holes.
3. The continuous decoppering furnace according to claim 1, characterized in that: the number of the flues is 2, and the flues are respectively positioned at two sides of the decoppering furnace body.
4. The continuous decoppering furnace according to claim 1, characterized in that: the motor is used together with the speed reducer.
5. The continuous decoppering furnace according to claim 1, characterized in that: the bottom of the flue is provided with a cleaning port.
6. The continuous decoppering furnace according to claim 1, characterized in that: the outlet end of the flue is connected with a filter.
7. The continuous decoppering furnace according to claim 1, characterized in that: the blanking pipe is integrally formed at the bottom of the stirring bin.
8. The continuous decoppering furnace according to claim 1, characterized in that: an elastic vibration reflection device is arranged in the flue opposite to the outlet of the conveying pipe, the elastic vibration reflection device comprises a tongue-shaped plate, one end of the tongue-shaped plate is movably connected with a connecting bolt, and the connecting bolt is fixed on the inner wall of the flue; the bottom of the other end of the tongue-shaped plate is connected with the flue through a bottom spring, and a top supporting rod is arranged at the top of the other end of the tongue-shaped plate.
9. The continuous decoppering furnace according to claim 8, characterized in that: and the top supporting rod is provided with a supporting block.
10. A process for sulphur removal using a continuous decoppering furnace according to any of claims 1 to 9, characterized in that: the process specifically comprises the following steps: adding a desulfurizing agent into the desulfurizing device to reduce the concentration of sulfur dioxide in the continuous decoppering furnace and the flue; wherein the desulfurizer is sodium carbonate or sodium bicarbonate.
CN202111680880.8A 2021-12-31 2021-12-31 Efficient sulfur-removing continuous copper-removing furnace and sulfur-removing process thereof Pending CN114146559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111680880.8A CN114146559A (en) 2021-12-31 2021-12-31 Efficient sulfur-removing continuous copper-removing furnace and sulfur-removing process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111680880.8A CN114146559A (en) 2021-12-31 2021-12-31 Efficient sulfur-removing continuous copper-removing furnace and sulfur-removing process thereof

Publications (1)

Publication Number Publication Date
CN114146559A true CN114146559A (en) 2022-03-08

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CN202111680880.8A Pending CN114146559A (en) 2021-12-31 2021-12-31 Efficient sulfur-removing continuous copper-removing furnace and sulfur-removing process thereof

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