CN103160333B - Yellow phosphorus tail gas automation total recovery system - Google Patents
Yellow phosphorus tail gas automation total recovery system Download PDFInfo
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- CN103160333B CN103160333B CN201310069076.5A CN201310069076A CN103160333B CN 103160333 B CN103160333 B CN 103160333B CN 201310069076 A CN201310069076 A CN 201310069076A CN 103160333 B CN103160333 B CN 103160333B
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- Prior art keywords
- tower
- washing
- water seal
- entrance
- outlet
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- 238000011084 recovery Methods 0.000 title claims abstract description 14
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 title abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 238000009792 diffusion process Methods 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 2
- 238000011001 backwashing Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000005494 condensation Effects 0.000 abstract 2
- 238000009833 condensation Methods 0.000 abstract 2
- 238000005119 centrifugation Methods 0.000 abstract 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a yellow phosphorus tail gas automation total recovery system, which is characterized by comprising an electric furnace (1), a condensation system, a washing system and a dedusting system, the condensation system is composed of condensing towers (2), (3) and (4) mutually connected in series in order, the washing system is composed of a centrifugation blower fan (9), two washing towers (8) and (10) arranged at the front and rear, and the dedusting system is composed of an independent dedusting tower (11). The tail gas automation total recovery system can realize the total automation control for recovering the yellow phosphorus tail gas, the labor intensity of field staff and security risk generated at equipment production can be reduced.
Description
Technical field
The present invention relates to the full recovery system of a kind of yellow phosphoric tail gas automatization.Belong to energy-conserving and environment-protective field.
Background technology
China Shi Yige phosphorus production big country, domestic You Shangbaijia phosphorus production factory, ultimate production occupies first place in the world.The production of yellow phosphorus is mainly electric furnace process, in the process of phosphorus production, can produce a large amount of tail gas, every production 1 t yellow phosphorus by-product tail gas 2500-3000m
3, as being directly discharged in atmosphere, not only can serious environment pollution, and be the significant wastage to resource.The main component of yellow phosphoric tail gas is CO, and general content is at 85%-95%, and yellow phosphoric tail gas can, as a kind of highly effective fuel, also can synthesize multiple organic chemicals as a kind of important industrial chemicals after treatment.The recovery of yellow phosphoric tail gas not only can protection of the environment thus, and remarkable in economical benefits.
Because yellow phosphorus electric furnace coal gas is containing CO approximately 90%, its explosive range is 12.5%-74.2%, as the too much air that bleeds just has explosion hazard, for guaranteeing safety, requires Control for Oxygen Content below 0.5%.So the design of its exhaust gas recovery system will be take safety as the first main points, yet in design in the past, have the inconsiderate problem of many security considerations.The problem existing for former yellow phosphoric tail gas recovery system is analyzed, and improves original designly, improves yellow phosphoric tail gas recovery system security and organic efficiency.
Due to the drag effects of plateau and exhaust temperature and pipeline, washing tower, existing vacuum pump rate of air sucked in required cannot reach design requirements, causes partial tail gas to recycle, and this partial tail gas is by being arranged on discharge after the diffusing chimney burning in total water seal.Before vacuum pump, washing overload, is provided with 2 washing towers before pump, is in order to remove as much as possible the solid impurity in tail gas, guarantees vacuum pump steady running.But have safety problem here, the major reason that pump fore portion becomes the design difficulty of exhaust gas recovery system is that negative pressure easily appears in pump fore portion, thereby causes air to enter explosion caused accident.And in above-mentioned design by the washing part of all tail gas all before pump, the resistance that tail gas is subject to before pump is excessive, thereby has increased the probability that occurs negative pressure before pump.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide that a kind of safety performance is high, practical, obvious processing effect, flexible, the energy-conservation full recovery system of yellow phosphoric tail gas automatization of processing set-up.
The object of the present invention is achieved like this: the full recovery system of a kind of yellow phosphoric tail gas automatization, it comprises electric furnace, condenser system, washing system and dust-removal system, described condenser system is by three condensing towers of mutually connecting successively, described washing system is comprised of two washing towers of centrifugal blower and front and back, described dust-removal system is comprised of gas wash tower independently, the air outlet of described electric furnace is connected with the entrance of first condensing tower, described the 3rd outlet of condensing tower and the entrance of total water seal are connected, in described total water seal, be provided with diffusing chimney, the outlet of described total water seal is connected with the entrance of washing tower above, the described outlet of washing tower and the entrance of centrifugal blower is above connected, the outlet of described centrifugal blower is connected with the entrance of washing tower below, between the washing tower of described front and back, be connected, the outlet of described washing tower is below connected with the entrance of gas wash tower, the outlet of described gas wash tower is connected with the entrance of non-return water seal, exit in described non-return water seal is provided with gas main, setting pressure sensor I between described condensing tower and total water seal, in described total water seal, diffusing chimney is set, pressure transmitter II and diffusion valve are set on described diffusing chimney, the entrance of described centrifugal blower and outlet section form and reflux, and flow control valve and under meter be set on the pipeline between the washing tower of front and back, on washing tower before described and the connecting pipeline of centrifugal blower, oxygen conten analyser and pressure regulator valve are set, described gas wash tower and non-return water seal linkage section arrange pressure transmitter III and under meter.
Compared with prior art, the present invention has following beneficial effect:
The present invention changes vacuum pump as centrifugal blower into, increases rate of air sucked in required, controls the stability that reverse flow valve keeps pressure before centrifugal blower, and before blower fan, increase the stability that pressure regulator valve carrys out the pressure of regulation system under low flow by increase.On the other hand, change vacuum pump into centrifugal blower, under nominal situation, save power consumption, under low flow and ultra-low quantity of flow operating mode, more can save power consumption.On diffusing chimney, any valve is not set at present, for preventing pouring in down a chimney air from diffusing chimney, pneumatic diffusion valve is set simultaneously, and seals (explosion-proof relief) in the other by-pass water of setting up of diffusion valve, when having an accident, open fast pneumatic diffusion valve and can implement tail gas emergency and diffuse.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein: electric furnace 1
Condensing tower 2,3,4
Displacement blow-down pipe 5
Diffusing chimney 6
Total water seal 7
Washing tower 8,10
Centrifugal blower 9
Gas wash tower 11
Non-return water seal 12
Gas main 13
Pressure transmitter I14
Pressure transmitter II15
Diffusion valve 16
Oxygen conten analyser 17
Pressure regulator valve 18
Flow control valve 19
Under meter 20
Pressure transmitter III21
Under meter 22.
Embodiment
Referring to Fig. 1, the present invention relates to the full recovery system of a kind of yellow phosphoric tail gas automatization, comprise electric furnace 1, condenser system, washing system and dust-removal system, described condenser system is by three condensing towers 2,3,4 of mutually connecting successively, tail gas by electric furnace 1 out, through condenser system, be condensed to total water seal 7, then through washing system, dust-removal system and non-return water seal 12, gather to gas main 13 respectively, described washing system is comprised of two washing towers 8,10 of centrifugal blower 9 and front and back, and described dust-removal system is comprised of gas wash tower 11 independently.
On the pipeline between described the 3rd condensing tower 4 and total water seal 7, be provided with pressure transmitter I14, in described total water seal 7, be provided with diffusing chimney 6, on described diffusing chimney 6, be disposed with pressure transmitter II15 and diffusion valve 16 from bottom to top, on the connecting pipeline between described washing tower 8 and centrifugal blower 9, be disposed with oxygen conten analyser 17 and pressure regulator valve 18, at described two washing towers 8, on 10 connecting pipeline, be provided with flow control valve 19 and under meter 20, on the connecting pipeline between described gas wash tower 11 and non-return water seal 12, be disposed with pressure transmitter III21, under meter 22, native system is provided with displacement blow-down pipe on the connecting pipeline of adjacent two equipment.
Under nominal situation, the pressure change of the pressure transmitter 14 of yellow phosphoric tail gas before condenser system enters total water seal 7 and gas wash tower 11 are exported to the data variation of the under meter 22 that non-return water seal 12 sets up, and by PLC system, automatically regulate frequency converter frequency to regulate the rate of discharge of centrifugal blower 9.
In low flow operating mode, place an order while adjusting centrifugal blower 9 rotating speeds cannot reach flow to mate with pressure dependence, by PLC system flow automatic regulation variable valve 19, and reach required traffic requirement by the uninterrupted of other under meter 20 demonstrations of flow control valve 19, to guarantee the system matches relation of flow and pressure.
When under ultra-low quantity of flow operating mode, yellow phosphoric tail gas enters total water seal 7 by condenser system, flow is on the low side, by PLC system, automatically regulate centrifugal blower 9 rotating speeds and flow control valve 19 to regulate and all cannot meet process requirements, while there is contradictory relation in pressure versus flow, by PLC system, automatically regulate the front pressure regulator valve 18 of centrifugal blower 9 to increase pressure, the contradiction of releasing the pressure with flow.
Under fault condition, while mainly referring to collapse material, yellow phosphoric tail gas enters total water seal 7 by condenser system, as there is abnormal pressure fluctuation in the pressure transmitter 14 before total water seal 7, exceed routine data, PLC Controlling System is controlled and is automatically opened chimney diffusion valve 16 and stop at once centrifugal blower 9 operations, gives a warning simultaneously.
When accident is taken precautions against, by monitoring, enter the detected oxygen level that exceeds standard of oxygen conten analyser 17 that total water seal 7 is front and diffusing chimney upward pressure sensor 15 pressure anomalies change or set up centrifugal blower 9 ingress, PLC system control centrifugal blower 9 stops and the security incident that opening the system that reaches of chimney diffusion valve 16 is taken precautions against.
Claims (1)
1. the full recovery system of yellow phosphoric tail gas automatization, it is characterized in that it comprises electric furnace (1), condenser system, washing system and dust-removal system, described condenser system is by three condensing towers (2) of mutually connecting successively, (3), (4), described washing system is two washing towers (8) by centrifugal blower (9) and front and back, (10) form, described dust-removal system is comprised of gas wash tower (11) independently, the air outlet of described electric furnace (1) is connected with the entrance of first condensing tower (2), the outlet of described the 3rd condensing tower (4) is connected with the entrance of total water seal (7), in described total water seal (7), be provided with diffusing chimney (6), the outlet of described total water seal (7) is connected with the entrance of washing tower (8) above, the outlet of described washing tower (8) is above connected with the entrance of centrifugal blower (9), the outlet of described centrifugal blower (9) is connected with the entrance of washing tower (10) below, described front and back washing towers (8), (10) between, be connected, the outlet of described washing tower (10) is below connected with the entrance of gas wash tower (11), the outlet of described gas wash tower (11) is connected with the entrance of non-return water seal (12), in the exit of described non-return water seal (12), be provided with gas main (13), setting pressure sensor I(14 between described condensing tower (4) and total water seal (7)), diffusing chimney (6) is set in described total water seal (7), on described diffusing chimney (6), pressure transmitter II(15 is set) and diffusion valve (16), the entrance of described centrifugal blower (9) and outlet section form and reflux, and in front and back washing tower (8), (10) flow control valve (19) and under meter (20) are set on the pipeline between, on washing tower (8) before described and the connecting pipeline of centrifugal blower (9), oxygen conten analyser (17) and pressure regulator valve (18) are set, described gas wash tower (11) arranges pressure transmitter III(21 with non-return water seal (12) linkage section) and under meter (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310069076.5A CN103160333B (en) | 2013-03-05 | 2013-03-05 | Yellow phosphorus tail gas automation total recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310069076.5A CN103160333B (en) | 2013-03-05 | 2013-03-05 | Yellow phosphorus tail gas automation total recovery system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103160333A CN103160333A (en) | 2013-06-19 |
| CN103160333B true CN103160333B (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310069076.5A Expired - Fee Related CN103160333B (en) | 2013-03-05 | 2013-03-05 | Yellow phosphorus tail gas automation total recovery system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155946A (en) * | 2014-07-29 | 2014-11-19 | 湖北亚太能源科技有限公司 | Automatic conveying system for yellow phosphorus electric furnace tail gas |
| CN105885958A (en) * | 2016-06-06 | 2016-08-24 | 中钢集团天澄环保科技股份有限公司 | Cooling device for automatically removing oil and water of coal gas in submerged arc furnace |
| CN109708483A (en) * | 2018-12-29 | 2019-05-03 | 中信锦州金属股份有限公司 | A kind of frequency conversion automatically controls the device and method of manganese silicon electric furnace gas pressure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564637A (en) * | 2009-05-27 | 2009-10-28 | 东南大学 | Method and device for removing phosphine in tail gas of yellow phosphorus boiler through oxidation |
| CN201386594Y (en) * | 2009-04-17 | 2010-01-20 | 昆明理工大学 | Yellow phosphorus tail gas fuel gas power generation device |
| CN102748957A (en) * | 2012-07-13 | 2012-10-24 | 上海一德电气科技有限公司 | Yellow phosphorus electric stove tail gas recovery system |
| CN203159560U (en) * | 2013-03-05 | 2013-08-28 | 江苏一同环保工程技术有限公司 | Full automatic recovering system for yellow phosphorus tail gas |
-
2013
- 2013-03-05 CN CN201310069076.5A patent/CN103160333B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386594Y (en) * | 2009-04-17 | 2010-01-20 | 昆明理工大学 | Yellow phosphorus tail gas fuel gas power generation device |
| CN101564637A (en) * | 2009-05-27 | 2009-10-28 | 东南大学 | Method and device for removing phosphine in tail gas of yellow phosphorus boiler through oxidation |
| CN102748957A (en) * | 2012-07-13 | 2012-10-24 | 上海一德电气科技有限公司 | Yellow phosphorus electric stove tail gas recovery system |
| CN203159560U (en) * | 2013-03-05 | 2013-08-28 | 江苏一同环保工程技术有限公司 | Full automatic recovering system for yellow phosphorus tail gas |
Non-Patent Citations (2)
| Title |
|---|
| 《黄磷尾气回收系统的安全设计》;王孝武等;《环境工程》;20031031;第21卷(第5期);第35-37页 * |
| 王孝武等.《黄磷尾气回收系统的安全设计》.《环境工程》.2003,第21卷(第5期), |
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| CN103160333A (en) | 2013-06-19 |
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