CN212999146U - Phosphorus steam dust collector for realizing high-purity phosphorus recovery - Google Patents
Phosphorus steam dust collector for realizing high-purity phosphorus recovery Download PDFInfo
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- CN212999146U CN212999146U CN202021567429.6U CN202021567429U CN212999146U CN 212999146 U CN212999146 U CN 212999146U CN 202021567429 U CN202021567429 U CN 202021567429U CN 212999146 U CN212999146 U CN 212999146U
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Abstract
The utility model provides a phosphorus steam dust removal device for realizing high-purity phosphorus recovery, which relates to the technical field of phosphorus chemical industry and comprises a dry dust removal mechanism and a wet dust removal mechanism, wherein the dry dust removal mechanism is arranged in front of the dry dust removal mechanism, and the wet dust removal mechanism is arranged at the rear end of the dry dust removal mechanism and adopts a series wet spray tower structure; the utility model discloses the phosphorus stove gas constant temperature heater who supplies with dry process dust removal mechanism respectively from the steam that the high temperature waste gas that produces through the combustion of tail gas burning furnace burning of exhaust after handling and boiler produced, and the steam condensing tower of wet process dust removal mechanism, make the yellow phosphorus burner gas temperature among the electrostatic precipitator keep more than its self dew point temperature, prevent the phosphorus in the steam condensing tower simultaneously and appear solidifying the phenomenon, make full use of the tail gas that yellow phosphorus production produced from this, the production cost is reduced, the energy resource consumption is saved, the rate of recovery of phosphorus steam has been improved, safety and reliability, high efficiency, advantages such as with low costs.
Description
Technical Field
The utility model relates to a phosphorus chemical industry technical field, concretely relates to realize phosphorus steam dust collector of high-purity phosphorus recovery.
Background
The electric furnace method for producing yellow phosphorus is to add the mixture of phosphorus ore, silica and carbonaceous reducing agent into a closed electric furnace, melt at high temperature, carry out chemical reduction reaction to generate gaseous substances such as elemental phosphorus, carbon monoxide and the like and carry dust to escape, and is called phosphorus furnace gas. The phosphorus-containing furnace gas is subjected to dust removal, condensation washing, refining and separation to obtain finished phosphorus. As the furnace gas at the outlet of the yellow phosphorus electric furnace contains a large amount of dust which is mixed with yellow phosphorus to form crude phosphorus in the yellow phosphorus condensation process, and the crude phosphorus generates a large amount of sewage and sludge phosphorus in the refining process, serious environmental pollution and high treatment cost are caused. Therefore, before the furnace gas is condensed and recycled, the furnace gas must be subjected to dust removal treatment. The existing dust removal device has the main problems of high cost and incapability of providing a stable heat source to keep the temperature of the yellow phosphorus furnace gas above the dew point of the yellow phosphorus furnace gas.
Disclosure of Invention
In order to solve the problem, the utility model provides a with low costs, follow-up purity height of retrieving yellow phosphorus, the waste residue waste water generates few phosphorus steam dust collector.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a phosphorus steam dust removal device for realizing high-purity phosphorus recovery comprises a dry dust removal mechanism and a wet dust removal mechanism, wherein the dry dust removal mechanism is arranged in front, the wet dust removal mechanism is arranged at the rear end of the dry dust removal mechanism, and a series wet spray tower structure is adopted;
the dry dedusting mechanism comprises a phosphorus furnace gas constant temperature heater 1, a phosphorus furnace gas inlet pipe 2, an electric dust collector 3, an ash discharge device 4, an ash discharge pipeline 5 and a primary purified gas outlet pipe 6; the device comprises a phosphorus furnace gas inlet pipe 2, an electric dust remover 3, an ash discharging device 4, an ash discharging pipeline 5, a primary purified gas outlet pipe 6, a phosphorus furnace gas inlet pipe 2, a phosphorus furnace gas constant-temperature heater 1, an electric dust remover 3, a primary purified gas outlet pipe 6, a phosphorus furnace gas constant-temperature heater, a phosphorus furnace gas inlet pipe 2, an electric dust remover 3, an ash discharging pipeline 5, a primary purified gas outlet pipe 6, a phosphorus furnace; the phosphorus furnace gas constant temperature heater 1 is connected with a hot blast stove 7, the heat of the hot blast stove 7 is supplied by a tail gas combustion furnace 8 for drying phosphate ore and a coal water slurry combustion furnace 9 through respective hot blast pipes, an exhaust pipe 26 is arranged on the phosphorus furnace gas constant temperature heater 1, and the gas after heat exchange is discharged through the exhaust pipe 26 or returns to a smoke exhaust channel of the tail gas combustion furnace 8.
The wet dust removal mechanism comprises a slag pool 10, a cooling water circulation pool 11, a sewage treatment station 12 and a condensing tower; the front end of the condensing tower is connected with an air outlet pipe of the electric dust collector 3, the rear end of the condensing tower is also connected with a tail gas purification mechanism 13 and a tail gas combustion furnace 8, the condensing tower comprises a steam condensing tower 14, a hot water condensing tower 15 and a cold water condensing tower 16, and the three adopt a series structure;
the steam condensing tower 14, the hot water condensing tower 15 and the cold water condensing tower 16 have the same internal structure, a phosphorus receiving groove 17 is formed in the lower end of the tower body, water is arranged on the upper layer of the phosphorus receiving groove 17, and a water pump 18 is arranged to pump the water to a spray header for condensation and absorption of yellow phosphorus steam; the lower layer of the phosphorus receiving tank 17 is a phosphorus-mud mixture, a phosphorus pump 19 is arranged to convey the phosphorus-mud mixture into a filter residue tank 20, and then the phosphorus-mud mixture enters a yellow phosphorus filter 21; the sprayed phosphorus-containing sewage mixed phosphorus-mud mixture is conveyed to a filter residue tank 20, the filtered water is conveyed to a sewage treatment station 12, and the filter residue tank 20 is connected to a yellow phosphorus filter 21;
the difference of the three is that:
a water replenishing pipe 22 is arranged on a phosphorus receiving groove 17 at the lower end of the steam condensation tower 14 and connected to the slag pool 10 to replenish the spray water, a steam heater 23 is arranged on the periphery of the upper layer of the phosphorus receiving groove 17, and the steam heater 23 is connected with a steam generator of the tail gas combustion furnace 8 to ensure that the temperature of the spray water is maintained at 65-75 ℃.
A hot water inlet pipe communicated with a water replenishing pipe 22 is installed on a phosphorus receiving groove 17 at the lower end of the hot water condensing tower 15 and is connected to the slag pool 10, hot water in the slag pool 10 enters the phosphorus receiving groove 17, the hot water is delivered to a spray header through a water pump 18, the temperature of spray water is guaranteed to be maintained at 50-60 ℃, and phosphorus-containing steam in the hot water condensing tower 15 is subjected to condensation washing.
A cold water inlet pipe 24 is arranged on a phosphorus receiving groove 17 at the lower end of the cold water condensation tower 16 and is connected to the cooling water circulation tank 11, cold water in the cooling water circulation tank 11 is conveyed into the phosphorus receiving groove 17, the temperature of spray water is guaranteed to be lower than 40 ℃, the cold water is conveyed to a spray header through a water pump 18, and phosphorus-containing steam in the cold water condensation tower 16 is subjected to condensation washing.
Preferably, the air outlet of the cold water condensation tower 16 is connected with a packed tower 25, the packed tower 25 is connected to the tail gas purification mechanism 13, and the yellow phosphorus collection tank at the lower end of the packed tower 25 is connected to the yellow phosphorus filter 21.
Preferably, the periphery of the electric dust collector 3 is provided with a heat preservation shell 27, and the heat preservation shell is connected with the hot blast stove 7, so that the gas temperature of the phosphorus furnace is further ensured to be kept above the dew point of the phosphorus steam.
Preferably, the inside downside of the gas intake pipe 2 of the phosphorus furnace is provided with an automatic ash removal device, which specifically comprises a high-pressure gas ash removal spray head 28, the high-pressure gas ash removal spray head 28 is connected with an inert compressed gas source and is controlled by a pneumatic valve 29, the pneumatic valve 29 is connected with a controller 30 to receive signals of the pneumatic valve, the controller 30 is connected with a temperature sensor 31 arranged on the inner wall of the gas intake pipe 2 of the phosphorus furnace close to the electric dust collector 3 through a wire and receives temperature signals of the temperature sensor, if dust accumulation occurs in the gas intake pipe 2 of the phosphorus furnace, local high temperature caused by unsmooth gas circulation is caused, the temperature sensor 31 transmits the temperature signals to the controller 30, and the controller 30 commands the pneumatic valve 29 to act, so that the high-pressure gas ash removal spray head 28 continuously or intermittently.
The utility model discloses the phosphorus stove gas constant temperature heater 1 that dry process dust removal mechanism was supplied with respectively to the steam that will follow the steam that 8 high temperature waste gases of burning production of exhaust after handling and boiler produced in tail gas combustion furnace, and the steam condensing tower 14 of wet process dust removal mechanism, make the yellow phosphorus burner gas temperature among the electrostatic precipitator 3 keep more than its self dew point temperature, prevent simultaneously that the phosphorus in the steam condensing tower 14 from appearing solidifying the phenomenon, make full use of the tail gas that yellow phosphorus production produced from this, the production cost is reduced, energy consumption has been practiced thrift, the rate of recovery of phosphorus steam has been improved, and the steam generator is safe and reliable, high efficiency, advantages such as with low costs.
Drawings
FIG. 1 is a schematic view showing the structure and connection of a phosphorus vapor dust removing apparatus described in example 1.
FIG. 2 is a schematic view showing the structure and connection of the phosphorus vapor dust removing apparatus described in example 2.
FIG. 3 is a schematic structural view of an electric precipitator according to example 3.
FIG. 4 is a schematic structural view of the automatic ash removal device described in example 4.
In the figure: the device comprises a phosphorus furnace gas constant temperature heater 1, a phosphorus furnace gas inlet pipe 2, an electric dust remover 3, an ash discharge device 4, an ash discharge pipeline 5, a primary purified gas outlet pipe 6, a hot blast stove 7, a tail gas combustion furnace 8, a coal water slurry combustion furnace 9, a slag pool 10, a cooling water circulation pool 11, a sewage treatment station 12, a tail gas purification mechanism 13, a steam condensation tower 14, a hot water condensation tower 15, a cold water condensation tower 16, a phosphorus receiving groove 17, a water pump 18, a phosphorus pump 19, a slag filtering groove 20, a yellow phosphorus filter 21, a water replenishing pipe 22, a steam heater 23, a cold water inlet pipe 24, a packed tower 25, an exhaust pipe 26, a heat preservation shell 27, an ash removal spray head 28, a pneumatic valve 29, a controller 30 and.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1
As shown in fig. 1, the phosphorus vapor dust removal device for realizing high-purity phosphorus recovery in this embodiment includes a dry dust removal mechanism and a wet dust removal mechanism, wherein the dry dust removal mechanism is arranged in front of the dry dust removal mechanism, and the wet dust removal mechanism is arranged at the rear end of the dry dust removal mechanism and adopts a series wet spray tower structure;
the dry dedusting mechanism comprises a phosphorus furnace gas constant temperature heater 1, a phosphorus furnace gas inlet pipe 2, an electric dust collector 3, an ash discharge device 4, an ash discharge pipeline 5 and a primary purified gas outlet pipe 6; the device comprises a phosphorus furnace gas inlet pipe 2, an electric dust remover 3, an ash discharging device 4, an ash discharging pipeline 5, a primary purified gas outlet pipe 6, a phosphorus furnace gas inlet pipe 2, a phosphorus furnace gas constant-temperature heater 1, an electric dust remover 3, a primary purified gas outlet pipe 6, a phosphorus furnace gas constant-temperature heater, a phosphorus furnace gas inlet pipe 2, an electric dust remover 3, an ash discharging pipeline 5, a primary purified gas outlet pipe 6, a phosphorus furnace; the phosphorus furnace gas constant temperature heater 1 is connected with a hot blast stove 7, the heat of the hot blast stove 7 is supplied by a tail gas combustion furnace 8 for drying phosphate ore and a coal water slurry combustion furnace 9 through respective hot blast pipes, an exhaust pipe 26 is arranged on the phosphorus furnace gas constant temperature heater 1, and the gas after heat exchange is discharged through the exhaust pipe 26 or returns to a smoke exhaust channel of the tail gas combustion furnace 8.
The wet dust removal mechanism comprises a slag pool 10, a cooling water circulation pool 11, a sewage treatment station 12 and a condensing tower; the front end of the condensing tower is connected with an air outlet pipe of the electric dust collector 3, the rear end of the condensing tower is also connected with a tail gas purification mechanism 13 and a tail gas combustion furnace 8, the condensing tower comprises a steam condensing tower 14, a hot water condensing tower 15 and a cold water condensing tower 16, and the three adopt a series structure;
the steam condensing tower 14, the hot water condensing tower 15 and the cold water condensing tower 16 have the same internal structure, a phosphorus receiving groove 17 is formed in the lower end of the tower body, water is arranged on the upper layer of the phosphorus receiving groove 17, and a water pump 18 is arranged to pump the water to a spray header for condensation and absorption of yellow phosphorus steam; the lower layer of the phosphorus receiving tank 17 is a phosphorus-mud mixture, a phosphorus pump 19 is arranged to convey the phosphorus-mud mixture into a filter residue tank 20, and then the phosphorus-mud mixture enters a yellow phosphorus filter 21; the sprayed phosphorus-containing sewage mixed phosphorus-mud mixture is conveyed to a filter residue tank 20, the filtered water is conveyed to a sewage treatment station 12, and the filter residue tank 20 is connected to a yellow phosphorus filter 21;
the difference of the three is that:
a water replenishing pipe 22 is arranged on a phosphorus receiving groove 17 at the lower end of the steam condensation tower 14 and connected to the slag pool 10 to replenish the spray water, a steam heater 23 is arranged on the periphery of the upper layer of the phosphorus receiving groove 17, and the steam heater 23 is connected with a steam generator of the tail gas combustion furnace 8 to ensure that the temperature of the spray water is maintained at 65-75 ℃.
A hot water inlet pipe communicated with a water replenishing pipe 22 is installed on a phosphorus receiving groove 17 at the lower end of the hot water condensing tower 15 and is connected to the slag pool 10, hot water in the slag pool 10 enters the phosphorus receiving groove 17, the hot water is delivered to a spray header through a water pump 18, the temperature of spray water is guaranteed to be maintained at 50-60 ℃, and phosphorus-containing steam in the hot water condensing tower 15 is subjected to condensation washing.
A cold water inlet pipe 24 is arranged on a phosphorus receiving groove 17 at the lower end of the cold water condensation tower 16 and is connected to the cooling water circulation tank 11, cold water in the cooling water circulation tank 11 is conveyed into the phosphorus receiving groove 17, the temperature of spray water is guaranteed to be lower than 40 ℃, the cold water is conveyed to a spray header through a water pump 18, and phosphorus-containing steam in the cold water condensation tower 16 is subjected to condensation washing.
Example 2
As shown in fig. 2, the phosphorus vapor dust removing apparatus for recovering high-purity phosphorus in this embodiment has a structure substantially the same as that described in embodiment 1, except that: the air outlet of the cold water condensing tower 16 is connected with a packed tower 25, the packed tower 25 is connected to the tail gas purification mechanism 13, and the yellow phosphorus collecting tank at the lower end of the packed tower is connected to the yellow phosphorus filter 21.
Example 3
As shown in fig. 3, the phosphorus vapor dust removing apparatus for recovering high-purity phosphorus in this embodiment has a structure substantially the same as that described in embodiment 1, except that: and a heat preservation shell 27 is arranged on the periphery of the electric dust collector 3 and is connected with the hot blast stove 7, so that the gas temperature of the phosphorus furnace is further ensured to be kept above the dew point of phosphorus steam.
Example 4
As shown in fig. 4, the phosphorus vapor dust removing apparatus for recovering high-purity phosphorus in this embodiment has a structure substantially the same as that described in embodiment 1, except that: the inside downside of the gas intake pipe 2 of the phosphorus furnace is provided with an automatic ash cleaning device, which specifically comprises a high-pressure gas ash cleaning spray head 28, the high-pressure gas ash cleaning spray head 28 is connected with an inert compressed gas source and is controlled by a pneumatic valve 29, the pneumatic valve 29 is connected with a controller 30 to receive signals of the pneumatic valve, the controller 30 is connected with a temperature sensor 31 arranged on the inner wall of the end, close to the electric dust collector 3, of the gas intake pipe 2 of the phosphorus furnace through a wire and receives temperature signals of the temperature sensor, if dust accumulation occurs in the gas intake pipe 2 of the phosphorus furnace, local high temperature caused by unsmooth gas circulation is caused, the temperature sensor 31 transmits the temperature signals to the controller 30, and the controller 30 commands the pneumatic valve 29 to act, so that the high-pressure gas ash cleaning.
Claims (4)
1. A phosphorus steam dust removal device for realizing high-purity phosphorus recovery is characterized by comprising a dry dust removal mechanism and a wet dust removal mechanism, wherein the dry dust removal mechanism is arranged in front, the wet dust removal mechanism is arranged at the rear end of the dry dust removal mechanism, and a series wet spray tower structure is adopted;
the dry dedusting mechanism comprises a phosphorus furnace gas constant temperature heater (1), a phosphorus furnace gas inlet pipe (2), an electric dust remover (3), an ash discharge device (4), an ash discharge pipeline (5) and a primary purified gas outlet pipe (6); the phosphorus furnace gas inlet pipe (2) is connected with a tail gas pipe of a yellow phosphorus electric furnace, the periphery of the phosphorus furnace gas inlet pipe is wrapped by a phosphorus furnace gas constant-temperature heater (1), the phosphorus furnace gas inlet pipe (2) is connected to an electric dust remover (3), the lower end of the electric dust remover (3) is provided with an ash discharge device (4), the ash discharge device is connected with an ash discharge pipeline (5) and is converged with phosphorus-containing sewage generated by a wet dust removal mechanism, and an air outlet of the electric dust remover (3) is connected with a primary purified gas outlet pipe (6) and is connected to the wet dust removal mechanism; the phosphorus furnace gas constant temperature heater (1) is connected with a hot blast stove (7), the heat of the hot blast stove (7) is supplied by a tail gas combustion furnace (8) for drying phosphate ore and a coal water slurry combustion furnace (9) through respective hot blast pipes, an exhaust pipe (26) is arranged on the phosphorus furnace gas constant temperature heater (1), and the gas after heat exchange is discharged through the exhaust pipe (26) or returns to a smoke exhaust channel of the tail gas combustion furnace (8);
the wet dust removal mechanism comprises a slag pool (10), a cooling water circulation pool (11), a sewage treatment station (12) and a condensing tower; the front end of the condensing tower is connected with an air outlet pipe of the electric dust collector (3), the rear end of the condensing tower is also connected with a tail gas purification mechanism (13) and a tail gas combustion furnace (8), the condensing tower comprises a steam condensing tower (14), a hot water condensing tower (15) and a cold water condensing tower (16), and the steam condensing tower, the hot water condensing tower and the cold water condensing tower are in a series connection structure;
the steam condensing tower (14), the hot water condensing tower (15) and the cold water condensing tower (16) are identical in internal structure, a phosphorus receiving groove (17) is formed in the lower end of the tower body, water is arranged on the upper layer of the phosphorus receiving groove (17), and a water pump (18) is arranged to pump the water to a spray header for condensation and absorption of yellow phosphorus steam; the lower layer of the phosphorus receiving tank (17) is a phosphorus-mud mixture, a phosphorus pump (19) is arranged to convey the phosphorus-mud mixture into a filter residue tank (20), and then the phosphorus-mud mixture enters a yellow phosphorus filter (21); the sprayed phosphorus-containing sewage mixed phosphorus-mud mixture is conveyed into a filter residue tank (20), the filtered water is conveyed into a sewage treatment station (12), and the filter residue tank (20) is connected into a yellow phosphorus filter (21);
wherein:
a water replenishing pipe (22) is arranged on a phosphorus receiving groove (17) at the lower end of the steam condensing tower (14) and is connected to the slag pool (10); in addition, a steam heater (23) is arranged on the periphery of the upper layer of the phosphorus receiving groove (17), and the steam heater (23) is connected with a steam generator of the tail gas combustion furnace (8);
a hot water inlet pipe communicated with a water replenishing pipe (22) is arranged on a phosphorus receiving groove (17) at the lower end of the hot water condensing tower (15) and is connected to the slag pool (10);
a cold water inlet pipe (24) is arranged on a phosphorus receiving groove (17) at the lower end of the cold water condensing tower (16) and is connected to the cooling water circulation pool (11).
2. The phosphorus vapor dust removing device for realizing high-purity phosphorus recovery as recited in claim 1, wherein the cold water condensing tower (16) has its outlet connected to a packed tower (25), the packed tower (25) is connected to the tail gas purification mechanism (13), and its lower yellow phosphorus collecting tank is connected to the yellow phosphorus filter (21).
3. The phosphorus steam dust removal device for realizing high-purity phosphorus recovery according to claim 1, wherein a heat preservation shell (27) is arranged at the periphery of the electric dust remover (3) and is connected with the hot blast stove (7).
4. The phosphorus steam dust removal device for realizing high-purity phosphorus recovery according to claim 1, wherein an automatic dust removal device is arranged at the lower side of the inside of the phosphorus furnace gas inlet pipe (2), and specifically comprises a high-pressure gas dust removal nozzle (28), the high-pressure gas dust removal nozzle (28) is connected with an inert compressed gas source and is controlled by a pneumatic valve (29), the pneumatic valve (29) is connected with a controller (30) to receive signals of the pneumatic valve, and the controller (30) is connected with a temperature sensor (31) arranged on the inner wall of the phosphorus furnace gas inlet pipe (2) close to one end of the electric dust remover (3) through a wire and receives temperature signals of the temperature sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021567429.6U CN212999146U (en) | 2020-08-01 | 2020-08-01 | Phosphorus steam dust collector for realizing high-purity phosphorus recovery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021567429.6U CN212999146U (en) | 2020-08-01 | 2020-08-01 | Phosphorus steam dust collector for realizing high-purity phosphorus recovery |
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| CN212999146U true CN212999146U (en) | 2021-04-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193178A (en) * | 2022-06-29 | 2022-10-18 | 成都易态科技有限公司 | Flue gas filtering and dust removing device and yellow phosphorus flue gas purification system |
| CN115212669A (en) * | 2022-06-29 | 2022-10-21 | 成都易态科技有限公司 | Yellow phosphorus flue gas purification system |
-
2020
- 2020-08-01 CN CN202021567429.6U patent/CN212999146U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115193178A (en) * | 2022-06-29 | 2022-10-18 | 成都易态科技有限公司 | Flue gas filtering and dust removing device and yellow phosphorus flue gas purification system |
| CN115212669A (en) * | 2022-06-29 | 2022-10-21 | 成都易态科技有限公司 | Yellow phosphorus flue gas purification system |
| CN115212669B (en) * | 2022-06-29 | 2023-07-04 | 成都易态科技有限公司 | Yellow phosphorus flue gas purification system |
| CN115193178B (en) * | 2022-06-29 | 2023-07-04 | 成都易态科技有限公司 | Flue gas filtering and dust removing device and yellow phosphorus flue gas purifying system |
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Address after: 655102 Liao Jia Tian, Jitou village, Malong District, Qujing City, Yunnan Province Patentee after: Qujing Yunhua Phosphorus Chemical Co.,Ltd. Address before: 655102 Liao Jia Tian, Jitou village, Malong District, Qujing City, Yunnan Province Patentee before: Yunnan Malong Yunhua Phosphorus Chemical Co.,Ltd. |