CN215905869U - Purification device for coarse arsenic trioxide - Google Patents
Purification device for coarse arsenic trioxide Download PDFInfo
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- CN215905869U CN215905869U CN202122526649.5U CN202122526649U CN215905869U CN 215905869 U CN215905869 U CN 215905869U CN 202122526649 U CN202122526649 U CN 202122526649U CN 215905869 U CN215905869 U CN 215905869U
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Abstract
The utility model relates to a purification device of crude arsenic trioxide, which belongs to the technical field of metallurgy and comprises a material heating furnace, a material holding furnace, a water-cooling collecting device, a fan and a tail gas absorption tank which are sequentially communicated through pipelines; the heating furnace is characterized in that a heating pipe is arranged inside the material heating furnace, a heat preservation pipe is arranged inside the material heat preservation furnace, two ends of the heating pipe extend out of the material heating furnace, two ends of the heat preservation pipe extend out of the material heat preservation furnace, and one end of the heating pipe is connected with the heat preservation pipe through a flange. According to the purification device for crude arsenic trioxide, the material heating furnace and the material heat preservation furnace adopt touch screen operation intelligent PID to control the temperature, the operation is simple and convenient, and the controllable degree is high; during the operation of the equipment, the inside of the equipment is always kept in a negative pressure state, so that the phenomena of smoke leakage and the like can be avoided, and the potential safety hazard is reduced.
Description
Technical Field
The utility model relates to a purification device of crude arsenic trioxide, in particular to a purification device of crude arsenic trioxide capable of preventing arsenic-containing flue gas from leaking outwards, and belongs to the technical field of metallurgy.
Background
The preparation of arsenic trioxide is mainly divided into a wet method and a pyrogenic method, wherein the wet method generally adopts a reducing agent to reduce an arsenic-rich solution to obtain arsenic trioxide, has low requirements on equipment, but has the defects of difficult treatment of arsenic-containing wastewater and the like; the pyrogenic process purification process is to separate arsenic trioxide and impurities thereof by utilizing different boiling points at different temperatures or pressures, has high requirements on equipment, and the equipment must resist high temperature corrosion and have good tightness, so that the phenomenon of gas leakage cannot occur, and the environment is prevented from being polluted. At present, a device for purifying arsenic trioxide by a pyrogenic process generally adopts a full-automatic belt type electric furnace, realizes continuous feeding and continuously produces arsenic trioxide, but the upper end of the electric furnace is easy to leak gas, so that arsenic-containing flue gas leaks outwards, the operating environment is poor, and potential safety hazards exist. Therefore, a device for purifying arsenic trioxide is needed, which can avoid the leakage of arsenic-containing flue gas and reduce the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is: in order to overcome the defects in the prior art, the purification device for the crude arsenic trioxide is provided, the problems of external leakage of arsenic-containing flue gas and the like can be avoided, and the potential safety hazard is reduced.
The technical scheme for solving the technical problems is as follows:
a purification device for crude arsenic trioxide comprises a material heating furnace, a material holding furnace, a water-cooling collecting device, a fan and a tail gas absorption tank which are sequentially communicated through pipelines; the heating furnace is characterized in that a heating pipe is arranged inside the material heating furnace, a heat preservation pipe is arranged inside the material heat preservation furnace, two ends of the heating pipe extend out of the material heating furnace, two ends of the heat preservation pipe extend out of the material heat preservation furnace, and one end of the heating pipe is connected with the heat preservation pipe through a flange.
Furthermore, the material heating furnace adopts a light ceramic fiber refined hearth, the furnace covers of the material heating furnace and the material heat preservation furnace are of upward opening structures, and a quick-release lock for realizing locking is arranged at an opening of the furnace body.
Furthermore, the water-cooling collecting device adopts a double-layer water-cooling structure, and a water inlet pipe and a water outlet pipe are arranged on the side surface of the water-cooling collecting device; the inside of water-cooling collection device is provided with double-deck PPS dust bag, and its bottom is provided with the valve.
Furthermore, the tail gas absorption tank is internally provided with alkali liquor.
Furthermore, the heating element of the material heating furnace is a high-quality silicon carbide rod, and the heating element of the material holding furnace is a resistance wire.
Furthermore, the heating pipe and the heat preservation pipe are made of corundum and 316L respectively.
Furthermore, the material of the water-cooling collecting device is 316L.
Compared with the prior art, the utility model has the beneficial effects that: during the operation period of the purification device, the interior of the purification device is always kept in a negative pressure state, so that the phenomena of flue gas leakage and the like can be avoided, and potential safety hazards are reduced; the double-layer PPS dust removal filter bag is adopted to collect arsenic, so that the arsenic collection rate is high and the resistance is small; the whole furnace body of the material heating furnace adopts a double-layer inner container type structure, and an air gap is arranged in the middle for isolation, so that the surface of the furnace body can be safely touched without rolling and scalding even if the temperature of a hearth is up to 1000 ℃, and the danger of scalding operators and the like in the operation of equipment is avoided; the material heating furnace and the material heat preservation furnace adopt intelligent PID control temperature through touch screen operation, the operation is simple and convenient, and the controllable degree is high; the alkali liquor is arranged in the tail gas absorption tank, so that toxic substances in the flue gas can be effectively recovered, and the safety of the equipment during operation is improved; the equipment is simple in structure and high in automation degree, potential safety hazards existing in the prior art can be effectively avoided, and the use requirements of customers are met.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a material heating furnace; 2. a material holding furnace; 3. a water-cooled collection device; 4. a fan; 5. a tail gas absorption tank; 6. heating a tube; 7. a heat preservation pipe; 8. a flange; 9. quickly disassembling the lock; 10. a water inlet pipe; 11. a water outlet pipe; 12. double layers of PPS dust filter bags; 13. a valve; 14. and (5) operating the platform.
Detailed Description
The principles and features of the present invention are described below in conjunction with the accompanying fig. 1, which is provided by way of example only to illustrate the present invention and not to limit the scope of the present invention.
A purification device for crude arsenic trioxide comprises a material heating furnace 1, a material holding furnace 2, a water-cooling collecting device 3, a fan 4 and a tail gas absorption tank 5 which are sequentially communicated through pipelines; a heating pipe 6 is arranged inside the material heating furnace 1, a heat preservation pipe 7 is arranged inside the material heat preservation furnace 2, two ends of the heating pipe 6 extend out of the material heating furnace 1, two ends of the heat preservation pipe 7 extend out of the material heat preservation furnace 2, and one end of the heating pipe 6 is connected with the heat preservation pipe 7 through a flange 8; the material heating furnace 1 and the material holding furnace 2 are placed above the operation platform 14.
The material heating furnace 1 adopts a light ceramic fiber refined hearth, the furnace covers of the material heating furnace 1 and the material holding furnace 2 are of an upward opening structure, and a quick-release lock 9 for realizing locking is arranged at an opening of the furnace body.
The water-cooling collecting device 3 adopts a double-layer water-cooling structure, and a water inlet pipe 10 and a water outlet pipe 11 are arranged on the side surface of the water-cooling collecting device; the inside of the water-cooling collecting device 3 is provided with a double-layer PPS dust removal filter bag 12 which can effectively prevent materials from being drawn out, and the bottom of the water-cooling collecting device is provided with a valve 13 which is opened intermittently to collect arsenic trioxide; the material of the water-cooling collecting device 3 is corrosion-resistant 316L.
The tail gas absorption tank 5 is internally provided with alkali liquor, tail gas enters from the lower end, and toxic substances in the flue gas can be effectively recovered.
The heating element of the material heating furnace 1 is a high-quality silicon carbide rod, the heating efficiency is high, and the highest temperature can reach 1400 ℃; the heating element of the material holding furnace 2 is a resistance wire, the temperature can reach 400 ℃, on one hand, the material can be effectively prevented from being condensed, and on the other hand, the stability of the material temperature can be maintained before the flue gas enters the water-cooling collecting device 3.
The heating pipe 6 and the heat preservation pipe 7 are respectively made of corundum and 316L, and the highest working temperature of the heating pipe 6 can be heated to 1300 ℃; the heating pipe 6 and the heat preservation pipe 7 are specially-made pipes, the connection tightness is good, and the problem of air leakage does not exist.
The material heating furnace 1 and the material holding furnace 2 adopt touch screen operation intelligent PID to control temperature, and are simple and convenient to operate and high in controllability.
The working principle is as follows: adding a crude arsenic trioxide raw material into the middle position of a heating pipe 6 in a material heating furnace 1, opening a cooling circulating water switch and a fan 4, and controlling the vacuum degree in the material heating furnace 1 by adjusting an air inlet valve 13; opening heating switches of the material heating furnace 1 and the material heat preservation furnace 2 after the vacuum degree is stable, heating to a specified temperature at a speed of 10 ℃/min, closing a temperature switch of the material heating furnace 1 after roasting for a period of time, closing the temperature switch of the material heat preservation furnace 2, the fan 4 and cooling circulating water when the temperature is reduced to be below 100 ℃, continuously cooling to room temperature, opening the material heating furnace 1, and taking out roasting slag; and opening a valve 13 at the lower end of the water-cooling collecting device 3, and taking out the arsenic trioxide sample collected inside.
During the operation period of the purification device, the interior of the purification device is always kept in a negative pressure state, so that the phenomena of flue gas leakage and the like can be avoided, and potential safety hazards are reduced; the double-layer PPS dust removal filter bag 12 is adopted to collect arsenic, the arsenic collection rate is high, and the resistance is small; the whole furnace body of the material heating furnace 1 adopts a double-layer inner container type structure, and an air gap is arranged in the middle for isolation, so that the surface of the furnace body can be safely touched without rolling and scalding even if the temperature of a hearth is up to 1000 ℃, and the dangers of scalding operators and the like in the operation of equipment are avoided; the material heating furnace 1 and the material heat preservation furnace 2 adopt intelligent PID control temperature through touch screen operation, and are simple and convenient to operate and high in controllability; the alkali liquor is arranged in the tail gas absorption tank 5, so that toxic substances in the flue gas can be effectively recovered, and the safety of the equipment during operation is improved; the equipment is simple in structure and high in automation degree, potential safety hazards existing in the prior art can be effectively avoided, and the use requirements of customers are met.
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 utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A purification device of crude arsenic trioxide is characterized in that: comprises a material heating furnace (1), a material heat preservation furnace (2), a water-cooling collecting device (3), a fan (4) and a tail gas absorption tank (5) which are sequentially communicated through a pipeline; the heating furnace is characterized in that a heating pipe (6) is arranged inside the material heating furnace (1), a heat preservation pipe (7) is arranged inside the material heat preservation furnace (2), the two ends of the heating pipe (6) extend out of the material heating furnace (1), the two ends of the heat preservation pipe (7) extend out of the material heat preservation furnace (2), and one end of the heating pipe (6) is connected with the heat preservation pipe (7) through a flange (8).
2. The apparatus for purifying crude arsenic trioxide as recited in claim 1, wherein: the material heating furnace (1) adopts a light ceramic fiber refined hearth, the furnace covers of the material heating furnace (1) and the material heat preservation furnace (2) are of an upward opening structure, and a quick-release lock (9) for realizing locking is arranged at an opening of the furnace body.
3. The apparatus for purifying crude arsenic trioxide as recited in claim 1, wherein: the water-cooling collecting device (3) adopts a double-layer water-cooling structure, and a water inlet pipe (10) and a water outlet pipe (11) are arranged on the side surface of the water-cooling collecting device; the inside of water-cooling collection device (3) is provided with double-deck PPS dust removal filter bag (12), and its bottom is provided with valve (13).
4. The apparatus for purifying crude arsenic trioxide as recited in claim 1, wherein: and alkali liquor is arranged in the tail gas absorption tank (5).
5. The apparatus for purifying crude arsenic trioxide as recited in claim 1, wherein: the heating element of the material heating furnace (1) is a high-quality silicon carbide rod, and the heating element of the material holding furnace (2) is a resistance wire.
6. The apparatus for purifying crude arsenic trioxide as recited in claim 1, wherein: the heating pipe (6) and the heat preservation pipe (7) are respectively made of corundum and 316L.
7. The apparatus for purifying crude arsenic trioxide as recited in claim 1, wherein: the material of the water-cooling collecting device (3) is 316L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122526649.5U CN215905869U (en) | 2021-10-20 | 2021-10-20 | Purification device for coarse arsenic trioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122526649.5U CN215905869U (en) | 2021-10-20 | 2021-10-20 | Purification device for coarse arsenic trioxide |
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| Publication Number | Publication Date |
|---|---|
| CN215905869U true CN215905869U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122526649.5U Active CN215905869U (en) | 2021-10-20 | 2021-10-20 | Purification device for coarse arsenic trioxide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114890469A (en) * | 2022-06-22 | 2022-08-12 | 国投金城冶金有限责任公司 | Arsenic trioxide purification system and purification method |
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2021
- 2021-10-20 CN CN202122526649.5U patent/CN215905869U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114890469A (en) * | 2022-06-22 | 2022-08-12 | 国投金城冶金有限责任公司 | Arsenic trioxide purification system and purification method |
| CN114890469B (en) * | 2022-06-22 | 2023-11-14 | 国投金城冶金有限责任公司 | Arsenic trioxide purification system and purification method |
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