CN203159560U - Full automatic recovering system for yellow phosphorus tail gas - Google Patents
Full automatic recovering system for yellow phosphorus tail gas Download PDFInfo
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- CN203159560U CN203159560U CN 201320099028 CN201320099028U CN203159560U CN 203159560 U CN203159560 U CN 203159560U CN 201320099028 CN201320099028 CN 201320099028 CN 201320099028 U CN201320099028 U CN 201320099028U CN 203159560 U CN203159560 U CN 203159560U
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- centrifugal blower
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Abstract
The utility model relates to a full automatic recovering system for yellow phosphorus tail gas. The system is characterized by comprising an electric furnace (1), a condensing system, a washing system and a dedusting system, wherein the condensing system consists of three condensing towers (2, 3, 4) sequentially connected in series, the washing system consists of a centrifugal fan (9) and front and back washing towers (8, 10), and the dedusting system consists of an independent dedusting tower (11). The system provided by the utility model realizes full automatic control of recovering yellow phosphorus tail gas, so that the labor intensity of field staff and the security risk in production of the device are reduced.
Description
Technical field
The utility model is related to a kind of yellow phosphorus tail gas automation total recovery system.Belong to energy-conserving and environment-protective field.
Background technology
China is a phosphorus production big country, and domestic You Shangbaijia phosphorus productions factory, total output occupies first place in the world.The production of yellow phosphorus is mainly electric furnace process, during phosphorus production, can produce substantial amounts of tail gas, often produces 1 t yellow phosphorus by-product tail gas 2500-3000m3, be such as directly discharged in air, not only can severe contamination environment, and be also the significant wastage to resource.The main component of yellow phosphoric tail gas is CO, and general content is in 85%-95%, and yellow phosphoric tail gas also can synthesize a variety of organic chemicals as a kind of highly effective fuel as a kind of important industrial chemicals after treatment.Thus the recovery of yellow phosphoric tail gas not only can be with environmental protection, and remarkable in economical benefits.
Because yellow phosphorus electric furnace coal gas contains CO about 90%, its explosive range is 12.5%-74.2%, has explosion danger if leaking into excessive air, to ensure safety, it is desirable to which Control for Oxygen Content is below 0.5%.So the design of its exhaust gas recovery system will be using safety as the first main points, but in conventional design, it there are the problem of many security considerations are inconsiderate.The problem of existing for former yellow phosphoric tail gas recovery system is analyzed, and improves former design, improves yellow phosphoric tail gas recovery system security and organic efficiency.
Due to plateau and exhaust temperature and pipeline, the drag effects of scrubbing tower, existing vavuum pump rate of air sucked in required is unable to reach design requirement, causes partial tail gas not recycle, and the partial tail gas is discharged after being burnt by the diffusing chimney being arranged in total water seal.Washed before vavuum pump and 2 scrubbing towers are provided with before overload, pump, be to remove the solid impurity in tail gas as much as possible, it is ensured that vavuum pump stable operation.But there is safety problem here, the major reason that pump forward part turns into the design difficulty of exhaust gas recovery system is that pump forward part negative pressure easily occurs, so that causing air to enter triggers explosion accident.And in above-mentioned design by the washing part of all tail gas all before pump, the resistance for making tail gas be subject to before pump is excessive, so as to add the probability for occurring negative pressure before pump.
The content of the invention
The purpose of this utility model be overcome it is above-mentioned it is not enough there is provided a kind of security performance is high, practical, obvious processing effect, technology arrangement flexibly, the yellow phosphorus tail gas automation total recovery system of energy-conservation.
What the purpose of this utility model was realized in：A kind of yellow phosphorus tail gas automation total recovery system, it includes electric furnace, condenser system, washing system and dust pelletizing system, the condenser system is by three condensing towers being serially connected successively, the washing system is made up of centrifugal blower and two front and rear scrubbing towers, the dust pelletizing system is made up of independent gas wash tower, the gas outlet of the electric furnace is connected with the entrance of first condensing tower, the outlet of 3rd condensing tower is connected with the entrance of total water seal, diffusing chimney is provided with total water seal, the outlet of total water seal is connected with the entrance of scrubbing tower above, the outlet of scrubbing tower before described is connected with the entrance of centrifugal blower, the outlet of the centrifugal blower is connected with the entrance of scrubbing tower below, it is connected before and after described between scrubbing tower, the outlet of scrubbing tower behind described is connected with the entrance of gas wash tower, the outlet of the gas wash tower is connected with the entrance of non-return water seal, the exit of the non-return water seal is provided with gas main, pressure sensor I is installed between the condensing tower and total water seal, diffusing chimney is set in total water seal, pressure sensor II and diffusion valve are set on the diffusing chimney, the entrance of the centrifugal blower flows back with outlet section formation, and flow control valve and flowmeter are set on the pipeline between front and rear scrubbing tower, scrubbing tower before described and setting oxygen conten analyser and pressure-regulating valve III on the connecting line of centrifugal blower, the gas wash tower sets pressure sensor and flowmeter with non-return water seal linkage section.
Compared with prior art, the utility model has the advantages that：
Vavuum pump is changed to centrifugal blower by the utility model, increases rate of air sucked in required, and the stability of pressure before centrifugal blower is kept by increasing control return valve, and increase pressure-regulating valve carrys out the stability of pressure of the regulating system under low discharge before blower fan.On the other hand, vavuum pump is changed under centrifugal blower, nominal situation save under power consumption, low discharge and ultra-low quantity of flow operating mode and can more saves power consumption.Any valve is not provided with current diffusing chimney, to prevent from pouring in down a chimney air from diffusing chimney, while set pneumatic diffusion valve, and bypass water-stop is set up by diffusion valve（Explosion-proof relief）, when an accident occurs, quickly open pneumatic diffusion valve and can implement tail gas emergency and diffuse.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Wherein：Electric furnace 1
Condensing tower 2,3,4
Replace blow-down pipe 5
Diffusing chimney 6
Total water seal 7
Scrubbing tower 8,10
Centrifugal blower 9
Gas wash tower 11
Non-return water seal 12
Gas main 13
Pressure sensor I14
Pressure sensor II15
Diffusion valve 16
Oxygen conten analyser 17
Pressure-regulating valve 18
Flow control valve 19
Flowmeter 20
Pressure sensor III21
Flowmeter 22.
Embodiment
Referring to Fig. 1, the utility model is related to a kind of yellow phosphorus tail gas automation total recovery system, including electric furnace 1, condenser system, washing system and dust pelletizing system, the condenser system is by three condensing towers being serially connected successively 2,3,4, tail gas is come out by electric furnace 1, condensed system condensing is to total water seal 7, then scrubbed system, dust pelletizing system and non-return water seal 12 collect to gas main 13 respectively, the washing system is made up of centrifugal blower 9 and front and rear two scrubbing towers 8,10, and the dust pelletizing system is made up of independent gas wash tower 11.
Pressure sensor I14 is provided with pipeline between the 3rd condensing tower 4 and total water seal 7, diffusing chimney 6 is provided with total water seal 7, pressure sensor II15 and diffusion valve 16 are disposed with from bottom to top on the diffusing chimney 6, oxygen conten analyser 17 and pressure-regulating valve 18 are disposed with connecting line between the scrubbing tower 8 and centrifugal blower 9, in described two scrubbing towers 8, flow control valve 19 and flowmeter 20 are provided with 10 connecting line, pressure sensor III21 is disposed with connecting line between the gas wash tower 11 and non-return water seal 12, flowmeter 22, the system is provided with displacement blow-down pipe on the connecting line of two neighboring equipment.
The pressure change and gas wash tower 11 of pressure sensor 14 before the condensed system of yellow phosphoric tail gas enters total water seal 7 in normal conditions are exported to the data variation for the flowmeter 22 that non-return water seal 12 is set up, and the rate of discharge of centrifugal blower 9 is adjusted to automatically adjust frequency converter frequency by PLC system.
When the dull rotating speed of centrifugal blower 9 is unable to reach flow and matched with pressure dependence at the lower flow conditions, pass through PLC system flow automatic regulation regulating valve 19, and the uninterrupted shown by the by-pass flow gauge 20 of flow control valve 19 is come the traffic requirement needed for reaching, to ensure the system matches relation of flow and pressure.
Flow is relatively low when yellow phosphoric tail gas enters total water seal 7 by condenser system under ultra-low quantity of flow operating mode, the rotating speed of centrifugal blower 9 is automatically adjusted by PLC system and flow control valve 19 adjusts and can not all meet process requirements, when there is contradictory relation with flow in pressure, pressure-regulating valve 18 is automatically adjusted before centrifugal blower 9 by PLC system to increase pressure, alleviates the contradiction of pressure and flow.
Under fault condition, refer mainly to collapse material when, yellow phosphoric tail gas enters total water seal 7 by condenser system, as abnormal pressure fluctuation occurs in the pressure sensor 14 before total water seal 7, beyond routine data, PLC control system control automatically opens up chimney diffusion valve 16 and stops centrifugal blower 9 at once and runs, and is simultaneously emitted by warning.
In accident prevention, the exceeded oxygen content that the oxygen conten analyser 17 that before total water seal 7 and the change of the pressure anomaly of pressure sensor 15 or the porch of centrifugal blower 9 are set up on diffusing chimney is detected is entered by monitoring, PLC system control centrifugal blower 9 stops and the security incident for opening to reach system of chimney diffusion valve 16 is taken precautions against.
Claims (1)
1. a kind of yellow phosphorus tail gas automation total recovery system, it is characterised in that it includes electric furnace（1）, condenser system, washing system and dust pelletizing system, the condenser system is by three condensing towers being serially connected successively（2）、（3）、（4）, the washing system is by centrifugal blower（9）With two front and rear scrubbing towers（8）、（10）Composition, the dust pelletizing system is by independent gas wash tower（11）Composition, the electric furnace（1）Gas outlet and first condensing tower（2）Entrance be connected, the 3rd condensing tower（4）Outlet and total water seal（7）Entrance be connected, in total water seal（7）On be provided with diffusing chimney（6）, total water seal（7）Outlet and scrubbing tower above（8）Entrance be connected, it is described before scrubbing tower（8）Outlet and centrifugal blower（9）Entrance be connected, the centrifugal blower（9）Outlet and scrubbing tower below（10）Entrance be connected, it is described before and after scrubbing tower（8）、（10）Between be connected, it is described behind scrubbing tower（10）Outlet and gas wash tower（11）Entrance be connected, the gas wash tower（11）Outlet and non-return water seal（12）Entrance be connected, in the non-return water seal（12）Exit be provided with gas main（13）, the condensing tower（4）With total water seal（7）Between pressure sensor I is installed（14）, total water seal（7）Upper setting diffusing chimney（6）, in the diffusing chimney（6）Upper setting pressure sensor II（15）And diffusion valve（16）, the centrifugal blower（9）The formation of entrance and outlet section flow back, and in front and rear scrubbing tower（8）、（10）Between pipeline on flow control valve is set（19）And flowmeter（20）, it is described before scrubbing tower（8）With centrifugal blower（9）Connecting line on oxygen conten analyser is set（17）With pressure-regulating valve III（18）, the gas wash tower（11）With non-return water seal（12）Linkage section sets pressure sensor（21）And flowmeter（22）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320099028 CN203159560U (en) | 2013-03-05 | 2013-03-05 | Full automatic recovering system for yellow phosphorus tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320099028 CN203159560U (en) | 2013-03-05 | 2013-03-05 | Full automatic recovering system for yellow phosphorus tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203159560U true CN203159560U (en) | 2013-08-28 |
Family
ID=49020760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320099028 Withdrawn - After Issue CN203159560U (en) | 2013-03-05 | 2013-03-05 | Full automatic recovering system for yellow phosphorus tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203159560U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160333A (en) * | 2013-03-05 | 2013-06-19 | 江苏一同环保工程技术有限公司 | Yellow phosphorus tail gas automation total recovery system |
| CN103657329A (en) * | 2013-12-25 | 2014-03-26 | 贵州开磷（集团）有限责任公司 | Yellow phosphorus exhaust gas centralized control, recycling and purifying device |
-
2013
- 2013-03-05 CN CN 201320099028 patent/CN203159560U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160333A (en) * | 2013-03-05 | 2013-06-19 | 江苏一同环保工程技术有限公司 | Yellow phosphorus tail gas automation total recovery system |
| CN103160333B (en) * | 2013-03-05 | 2014-04-16 | 江苏一同环保工程技术有限公司 | Yellow phosphorus tail gas automation total recovery system |
| CN103657329A (en) * | 2013-12-25 | 2014-03-26 | 贵州开磷（集团）有限责任公司 | Yellow phosphorus exhaust gas centralized control, recycling and purifying device |
| CN103657329B (en) * | 2013-12-25 | 2016-05-04 | 贵州开磷集团股份有限公司 | A kind of yellow phosphoric tail gas centralized Control reclaims and purifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130828 Effective date of abandoning: 20140416 |
|
| RGAV | Abandon patent right to avoid regrant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160830 Granted publication date: 20130828 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20170228 Granted publication date: 20130828 |