CN213031894U - High-efficient condensation recovery unit of phosphorus steam - Google Patents
High-efficient condensation recovery unit of phosphorus steam Download PDFInfo
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- CN213031894U CN213031894U CN202021567436.6U CN202021567436U CN213031894U CN 213031894 U CN213031894 U CN 213031894U CN 202021567436 U CN202021567436 U CN 202021567436U CN 213031894 U CN213031894 U CN 213031894U
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Abstract
The utility model provides a high-efficiency condensation recovery device of phosphorus steam, which relates to the technical field of phosphorus chemical industry, and comprises a yellow phosphorus electric furnace, a slag water quenching pool, a cooling water circulation pool, a sewage treatment station, an electric dust remover and a condensation tower; the front end of condensing tower links to each other with electrostatic precipitator's outlet duct, and its rear end still is connected with tail gas purification mechanism and tail gas boiler, the condensing tower includes steam condensing tower, hot water condensing tower and cold water condensing tower, and the three adopts series structure. The condensation recovery process of the yellow phosphorus steam and the corresponding equipment are refined, the level of the condensation process is increased, and the condensation efficiency is improved; and the waste heat generated by the electric furnace phosphorus production is used for keeping and controlling the temperature of the spray water in the yellow phosphorus steam condensation and recovery device, thereby achieving the purpose of fully utilizing energy.
Description
Technical Field
The utility model relates to a bonderizing chemical technology field, concretely relates to high-efficient condensation recovery unit of phosphorus steam.
Background
The production flow of preparing phosphorus by an electric furnace method can be basically summarized as follows: the device comprises five components of a feeding system, a power supply system, a phosphorus making electric furnace, a dust removal device, a phosphorus collecting system and the like.
The raw materials are fed into an electric furnace, the reduction reaction is carried out in the furnace at high temperature, the mixed furnace gas of phosphorus steam, carbon monoxide and the like which are reaction products is led out from a gas guide pipe, and the main components of the furnace gas are carbon monoxide, phosphorus steam and a small amount of CO2、N2、SiF4、PH3、H2And the like, and in addition, a part of fine dust with the particle size of less than 2 mu m can be carried, after the dust is discharged from the furnace gas by the electric dust collector 5, the furnace gas is cooled and condensed in a condensation system by taking water as a cooling medium, and phosphorus steam is condensed to obtain crude phosphorus.
Condensing system among the prior art adopts the direct mode of spraying to condense into liquid phosphorus with phosphorus steam cooling, adopts two condensation tower series structures usually, and first tower is "high temperature condensation tower", sprays 60 ℃ of hot water, and the second tower is "low temperature condensation tower", sprays about 20 ℃ of cooling water, operates under the freezing point temperature that is less than the phosphorus to reduce the phosphorus loss that tail gas was taken away.
Along with the requirement of national admission conditions of the yellow phosphorus industry, the comprehensive utilization rate of the tail gas is improved to more than 90 percent, the existing high-efficiency condensation and recovery device for phosphorus steam needs to be continuously improved, the level of the condensation process can be properly increased, the condensation efficiency is improved, the recovery rate of the phosphorus steam is improved, and the phosphorus content in the final phosphorus furnace tail gas is reduced.
Disclosure of Invention
In order to solve the problems, the utility model provides a high-efficiency condensation recovery device of phosphorus steam, which refines the condensation recovery process of the yellow phosphorus steam and the corresponding equipment, increases the level of the condensation process and improves the condensation efficiency; and the waste heat generated by the electric furnace phosphorus production is used for keeping and controlling the temperature of the spray water in the yellow phosphorus steam condensation and recovery device, thereby achieving the purpose of fully utilizing energy.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a high-efficiency condensation recovery device of phosphorus steam comprises a yellow phosphorus electric furnace 1, a slag water quenching tank 2, a cooling water circulation tank 3, a sewage treatment station 4, an electric dust collector 5 and a condensation tower; the front end of the condensing tower is connected with an air outlet pipe of the electric dust collector 5, and the rear end of the condensing tower is also connected with a tail gas purification mechanism 6 and a tail gas boiler 7, and the condensing tower is characterized by comprising a steam condensing tower 8, a hot water condensing tower 9 and a cold water condensing tower 10 which are in a series connection structure, wherein an air inlet of the steam condensing tower 8 is connected with the air outlet pipe of the electric dust collector 5, an air outlet of the steam condensing tower is connected with an air inlet of the hot water condensing tower 9, and an air outlet of the hot water condensing tower 9 is connected with an air inlet of the cold;
the lower end of the steam condensation tower 8 is connected with a first phosphorus receiving groove 801, the upper layer of the first phosphorus receiving groove 801 is water, a first water pump 802 is arranged to pump the water into the steam condensation tower 8, and yellow phosphorus steam is condensed and absorbed through a spray header; the lower layer of the first phosphorus receiving tank 801 is a phosphorus-mud mixture, and a first phosphorus pump 803 is arranged to convey the phosphorus-mud mixture into the slag filtering tank 12 and then into the yellow phosphorus filter 11; in addition, a water replenishing pipe 804 is arranged on the first phosphorus receiving groove 801 and connected to the slag water quenching tank 2 so as to replenish spray water pumped away by a first phosphorus pump 803, a steam heater 805 is arranged on the periphery of the upper layer of the first phosphorus receiving groove 801 and connected with a steam inlet pipe 806, and the steam inlet pipe 806 is connected with a steam generator of the tail gas boiler 7 so as to ensure that the temperature of the spray water is maintained at 75 +/-2 ℃;
a second phosphorus receiving tank 901, a second water pump 902 and a second phosphorus pump 903 are arranged at the lower end of the hot water condensation tower 9, the structure of the second phosphorus receiving tank is consistent with that of the first phosphorus receiving tank 801, a hot water inlet pipe 904 is installed at the top end of the second phosphorus receiving tank 901 and connected to the slag water quenching tank 2, a hot water pump 905 is arranged on the hot water inlet pipe 904, hot water in the slag water quenching tank 2 is conveyed into the second phosphorus receiving tank 901, the hot water is conveyed to a spray header through the second water pump 902, phosphorus-containing steam in the hot water condensation tower 9 is subjected to condensation washing, phosphorus-containing sewage subjected to spray heat exchange is mixed and precipitated to a phosphorus-sludge mixture at the lower layer of the second phosphorus receiving tank 901 and conveyed into a slag filtering tank 12 through the second phosphorus pump 903, filtered water is conveyed to the sewage treatment station 4, and the slag filtering tank 12 is connected to the yellow phosphorus filtering machine 11; the hot water in the slag water quenching tank 2 is continuously sent to a second phosphorus receiving tank 901 to ensure that the temperature of spray water is maintained at 55 +/-2 ℃;
the lower end of the cold water condensing tower 10 is provided with a third phosphorus receiving tank 101, a third water pump 102 and a third phosphorus pump 103, the structure of the cold water condensing tower is consistent with that of the first phosphorus receiving tank 801 and the second phosphorus receiving tank 901, the top end of the third phosphorus receiving tank 101 is provided with a cold water inlet pipe 104 which is connected to a cooling water circulating pool 3, the cold water inlet pipe 104 is provided with a cold water pump 105 which conveys the cold water in the cooling water circulating pool 3 to the third phosphorus receiving tank 101, the cold water is conveyed to a spray header through the third water pump 102 to carry out condensation washing on the phosphorus-containing steam in the cold water condensing tower 10, the sprayed phosphorus-containing sewage is mixed and precipitated to the phosphorus-containing mixture at the lower layer of the third phosphorus receiving tank 101 and conveyed to a yellow phosphorus filter 11 through the third phosphorus pump 103, and the phosphorus is filtered and then conveyed to the sewage treatment; the cold water in the cooling water circulation pool 3 is continuously sent to the third phosphorus receiving tank 101 to ensure that the temperature of the spray water is maintained at 30 +/-2 ℃.
Preferably, a refrigeration device 106 is arranged on the cold water inlet pipe 104 of the third phosphorus receiving groove 101 and is connected with a thermal resistor arranged in the third phosphorus receiving groove 101 through a lead, and if the influence of the received air temperature causes that the water temperature of the cooling water circulation tank 3 is higher than a set value, the refrigeration device 106 is started to ensure that the water temperature sent to the third phosphorus receiving groove 101 is controlled at a limit value.
Preferably, in order to further improve the recovery rate of yellow phosphorus, an air guide pipe is arranged on an air outlet of the cold water condensing tower 10 and connected with a packed tower 13, the air outlet of the packed tower 13 is connected with a tail gas purification mechanism 6 and a tail gas boiler 7, and a yellow phosphorus collecting tank at the lower end of the packed tower is connected to a yellow phosphorus filter 11.
The principle and the beneficial effect of the application are as follows: because the melting point of phosphorus is about 44 ℃, the phosphorus can be solidified when the temperature is lower than the melting point, in the application, the steam condensing tower 8 adopts steam to heat and preserve heat hot water for spraying, so that the condensing and washing speed can be accelerated, a large amount of phosphorus is prevented from being solidified on the tower wall, the effective volume of the tower is ensured to fully play a role, and more than 95 percent of phosphorus in yellow phosphorus steam can be washed and collected in a first condensing tower; the basic principle of the hot water condensing tower 9 is similar to that of the steam condensing tower 8, and belongs to the supplement of the steam condensing tower 8; in order to fully exert the advantages of the first two condensing towers, the constant temperature setting is specially carried out on the temperature of the condensed water in the application, and for the steam condensing tower 8 with the highest water temperature requirement, the steam prepared in the tail gas combustion boiler is led out to carry out constant temperature heat preservation on spray water of the tail gas combustion boiler, so that the recovery rate of the steam condensing tower 8 is improved to the greatest extent; for the hot water condensing tower 9 with the lower requirement on the temperature of condensed water, hot water in a water quenching pool for cooling slag is introduced into the hot water condensing tower, so that the constant temperature of the condensed water is ensured; the phosphorus content of the phosphorus steam in the cold water condensation tower 10 is lower, the condensation speed is slower and slower, and the condensation time is prolonged, so that low-temperature water is adopted for spraying and washing. This application rational utilization the heat that self produced in the yellow phosphorus production process to be used for these heats in process of production, practiced thrift the energy, make the operational environment that the condensation was retrieved simultaneously remain stable, improved the condensation rate of recovery of yellow phosphorus steam.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the cold water condensing tower and its connection in example 2.
FIG. 3 is a schematic diagram of the cold water condensing tower and its connections as described in example 3.
In the figure: yellow phosphorus electric furnace 1, slag water quenching tank 2, cooling water circulation tank 3, sewage treatment station 4, electric dust collector 5, tail gas purification mechanism 6, tail gas boiler 7, steam condensing tower 8, first phosphorus receiving tank 801, first water pump 802, first phosphorus pump 803, water replenishing pipe 804, steam heater 805, steam inlet pipe 806, hot water condensing tower 9, second phosphorus receiving tank 901, second water pump 902, second phosphorus pump 903, hot water inlet pipe 904, hot water pump 905, cold water condensing tower 10, third phosphorus receiving tank 101, third water pump 102, third phosphorus pump 103, cold water inlet pipe 104, cold water pump 105, refrigerating device 106, yellow phosphorus filter 11, slag filtering tank 12 and packed tower 13.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1
As shown in fig. 1, the high-efficiency condensation and recovery device for phosphorus vapor in the embodiment includes a yellow phosphorus electric furnace 1, a slag water quenching tank 2, a cooling water circulation tank 3, a sewage treatment station 4, an electric dust collector 5, and a condensation tower; the front end of the condensing tower is connected with an air outlet pipe of the electric dust collector 5, the rear end of the condensing tower is also connected with a tail gas purification mechanism 6 and a tail gas boiler 7, the condensing tower comprises a steam condensing tower 8, a hot water condensing tower 9 and a cold water condensing tower 10, and the steam condensing tower 8, the hot water condensing tower 9 and the cold water condensing tower 10 are in a series connection structure, wherein an air inlet of the steam condensing tower 8 is connected with the air outlet pipe of the electric dust collector 5, an air outlet of the steam condensing tower is connected to an air inlet of the hot water condensing tower 9, and;
the lower end of the steam condensation tower 8 is connected with a first phosphorus receiving groove 801, the upper layer of the first phosphorus receiving groove 801 is water, a first water pump 802 is arranged to pump the water into the steam condensation tower 8, and yellow phosphorus steam is condensed and absorbed through a spray header; the lower layer of the first phosphorus receiving tank 801 is a phosphorus-mud mixture, and a first phosphorus pump 803 is arranged to convey the phosphorus-mud mixture into the slag filtering tank 12 and then into the yellow phosphorus filter 11; in addition, a water replenishing pipe 804 is arranged on the first phosphorus receiving groove 801 and connected to the slag water quenching tank 2 so as to replenish spray water pumped away by a first phosphorus pump 803, a steam heater 805 is arranged on the periphery of the upper layer of the first phosphorus receiving groove 801 and connected with a steam inlet pipe 806, and the steam inlet pipe 806 is connected with a steam generator of the tail gas boiler 7 so as to ensure that the temperature of the spray water is maintained at 75 +/-2 ℃;
a second phosphorus receiving tank 901, a second water pump 902 and a second phosphorus pump 903 are arranged at the lower end of the hot water condensation tower 9, the structure of the second phosphorus receiving tank is consistent with that of the first phosphorus receiving tank 801, a hot water inlet pipe 904 is installed at the top end of the second phosphorus receiving tank 901 and connected to the slag water quenching tank 2, a hot water pump 905 is arranged on the hot water inlet pipe 904, hot water in the slag water quenching tank 2 is conveyed into the second phosphorus receiving tank 901, the hot water is conveyed to a spray header through the second water pump 902, phosphorus-containing steam in the hot water condensation tower 9 is subjected to condensation washing, phosphorus-containing sewage subjected to spray heat exchange is mixed and precipitated to a phosphorus-sludge mixture at the lower layer of the second phosphorus receiving tank 901 and conveyed into a slag filtering tank 12 through the second phosphorus pump 903, filtered water is conveyed to the sewage treatment station 4, and the slag filtering tank 12 is connected to the yellow phosphorus filtering machine 11; the hot water in the slag water quenching tank 2 is continuously sent to a second phosphorus receiving tank 901 to ensure that the temperature of spray water is maintained at 55 +/-2 ℃;
the lower end of the cold water condensing tower 10 is provided with a third phosphorus receiving tank 101, a third water pump 102 and a third phosphorus pump 103, the structure of the cold water condensing tower is consistent with that of the first phosphorus receiving tank 801 and the second phosphorus receiving tank 901, the top end of the third phosphorus receiving tank 101 is provided with a cold water inlet pipe 104 which is connected to a cooling water circulating pool 3, the cold water inlet pipe 104 is provided with a cold water pump 105 which conveys the cold water in the cooling water circulating pool 3 to the third phosphorus receiving tank 101, the cold water is conveyed to a spray header through the third water pump 102 to carry out condensation washing on the phosphorus-containing steam in the cold water condensing tower 10, the sprayed phosphorus-containing sewage is mixed and precipitated to the phosphorus-containing mixture at the lower layer of the third phosphorus receiving tank 101 and conveyed to a yellow phosphorus filter 11 through the third phosphorus pump 103, and the phosphorus is filtered and then conveyed to the sewage treatment; the cold water in the cooling water circulation pool 3 is continuously sent to the third phosphorus receiving tank 101 to ensure that the temperature of the spray water is maintained at 30 +/-2 ℃.
Example 2
As shown in fig. 1 and 2, the structure of the apparatus for condensing and recovering phosphorus vapor in this embodiment is substantially the same as that of embodiment 1, except that a refrigeration device 106 is disposed on the cold water inlet pipe 104 of the third phosphorus receiving tank 101 and is connected to a thermal resistor disposed in the third phosphorus receiving tank 101 through a wire, and if the water temperature in the cooling water circulation tank 3 is higher than a set value due to the influence of the received air temperature, the refrigeration device 106 is activated to ensure that the water temperature delivered to the third phosphorus receiving tank 101 is controlled at a limit value.
Example 3
As shown in fig. 1, 2 and 3, the structure of the apparatus for condensing and recovering phosphorus vapor in this embodiment is substantially the same as that of embodiment 2, except that an air duct is provided at the air outlet of the cold water condensing tower 10 to connect with a packed tower 13, the air outlet of the packed tower 13 is connected to a tail gas purifying mechanism 6 and a tail gas boiler 7, and the yellow phosphorus collecting tank at the lower end thereof is connected to a yellow phosphorus filter 11.
Claims (3)
1. A high-efficiency condensation recovery device of phosphorus steam comprises a yellow phosphorus electric furnace (1), a slag water quenching tank (2), a cooling water circulation tank (3), a sewage treatment station (4), an electric dust remover (5) and a condensation tower; the front end of the condensing tower is connected with an air outlet pipe of the electric dust collector (5), and the rear end of the condensing tower is also connected with a tail gas purification mechanism (6) and a tail gas boiler (7), the condensing tower is characterized by comprising a steam condensing tower (8), a hot water condensing tower (9) and a cold water condensing tower (10), and the steam condensing tower (8) and the cold water condensing tower are in a series structure, wherein an air inlet of the steam condensing tower (8) is connected with the air outlet pipe of the electric dust collector (5), an air outlet of the steam condensing tower is connected to an air inlet of the hot water condensing tower (9), and an air outlet of the hot water condensing tower (9) is connected;
the lower end of the steam condensing tower (8) is connected with a first phosphorus receiving groove (801), the upper layer of the first phosphorus receiving groove (801) is water, a first water pump (802) is arranged to pump the water into the steam condensing tower (8), and yellow phosphorus steam is condensed and absorbed through a spray header; in addition, a water replenishing pipe (804) is arranged on the first phosphorus receiving groove (801) and is connected to the slag water quenching pool (2) to replenish spray water pumped by a first phosphorus pump (803), a steam heater (805) is arranged on the periphery of the upper layer of the first phosphorus receiving groove (801) and is connected with a steam inlet pipe (806), the steam inlet pipe (806) is connected with a steam generator of the tail gas boiler (7),
the lower end of the hot water condensation tower (9) is provided with a second phosphorus receiving tank (901), a second water pump (902) and a second phosphorus pump (903), the structure of the hot water condensation tower is consistent with that of the first phosphorus receiving tank (801), the top end of the second phosphorus receiving tank (901) is provided with a hot water inlet pipe (904) and connected to the slag water quenching tank (2), the hot water inlet pipe (904) is provided with a hot water pump (905), and the slag filtering tank (12) is connected to the yellow phosphorus filtering machine (11);
the lower extreme of cold water condensing tower (10) sets up No. three and receives phosphorus groove (101), No. three water pump (102) and No. three phosphorus pump (103), its structure is unanimous with receiving phosphorus groove (801) and No. two and receiving phosphorus groove (901), receive the top in phosphorus groove (101) No. three and install cold water inlet tube (104), and connect to cooling water circulation pond (3), be provided with cold water pump (105) on cold water inlet tube (104), carry the cold water in cooling water circulation pond (3) No. three and receive phosphorus groove (101), send cold water to the shower head through No. three water pump (102).
2. The high-efficiency condensation and recovery device for phosphorus vapor as claimed in claim 1, wherein a refrigeration device (106) is arranged on the cold water inlet pipe (104) of the third phosphorus receiving groove (101), and is connected with a thermal resistor arranged in the third phosphorus receiving groove (101) through a wire.
3. The high-efficiency condensation and recovery device for phosphorus vapor according to claim 1 or 2, characterized in that a gas guide pipe is arranged on the gas outlet of the cold water condensation tower (10) and connected with a packed tower (13), the gas outlet of the packed tower (13) is connected with a tail gas purification mechanism (6) and a tail gas boiler (7), and the yellow phosphorus collecting tank at the lower end of the packed tower is connected with a yellow phosphorus filter (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021567436.6U CN213031894U (en) | 2020-08-01 | 2020-08-01 | High-efficient condensation recovery unit of phosphorus steam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021567436.6U CN213031894U (en) | 2020-08-01 | 2020-08-01 | High-efficient condensation recovery unit of phosphorus steam |
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| CN213031894U true CN213031894U (en) | 2021-04-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113368600A (en) * | 2021-05-11 | 2021-09-10 | 何建军 | Vacuum constant temperature yellow phosphorus filter |
| CN114367124A (en) * | 2021-12-31 | 2022-04-19 | 云南澄江志成磷业化工有限责任公司 | Yellow phosphorus furnace gas treatment equipment and method |
| CN116143089A (en) * | 2023-01-10 | 2023-05-23 | 昆明理工大学 | Indium phosphide recovery device |
-
2020
- 2020-08-01 CN CN202021567436.6U patent/CN213031894U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113368600A (en) * | 2021-05-11 | 2021-09-10 | 何建军 | Vacuum constant temperature yellow phosphorus filter |
| CN113368600B (en) * | 2021-05-11 | 2022-10-14 | 何建军 | Vacuum constant temperature yellow phosphorus filter |
| CN114367124A (en) * | 2021-12-31 | 2022-04-19 | 云南澄江志成磷业化工有限责任公司 | Yellow phosphorus furnace gas treatment equipment and method |
| CN114367124B (en) * | 2021-12-31 | 2023-02-10 | 云南澄江志成磷业化工有限责任公司 | Yellow phosphorus furnace gas treatment equipment and method |
| CN116143089A (en) * | 2023-01-10 | 2023-05-23 | 昆明理工大学 | Indium phosphide recovery device |
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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. |