CN220478455U - Venturi washing device for purifying tail gas of phosphorus pentoxide production system - Google Patents
Venturi washing device for purifying tail gas of phosphorus pentoxide production system Download PDFInfo
- Publication number
- CN220478455U CN220478455U CN202321921366.3U CN202321921366U CN220478455U CN 220478455 U CN220478455 U CN 220478455U CN 202321921366 U CN202321921366 U CN 202321921366U CN 220478455 U CN220478455 U CN 220478455U
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- Prior art keywords
- pipe
- section
- degassing tank
- phosphorus pentoxide
- production system
- Prior art date
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- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000005406 washing Methods 0.000 title claims abstract description 8
- 238000007872 degassing Methods 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 230000008602 contraction Effects 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 238000002156 mixing Methods 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 5
- 230000003028 elevating effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 2
- 238000005201 scrubbing Methods 0.000 claims 7
- 230000000694 effects Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 34
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 18
- YWEUIGNSBFLMFL-UHFFFAOYSA-N diphosphonate Chemical compound O=P(=O)OP(=O)=O YWEUIGNSBFLMFL-UHFFFAOYSA-N 0.000 description 17
- 238000005507 spraying Methods 0.000 description 13
- 239000003595 mist Substances 0.000 description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 9
- 238000000926 separation method Methods 0.000 description 8
- 239000000779 smoke Substances 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- XURIQWBLYMJSLS-UHFFFAOYSA-N 1,4,7,10-tetrazacyclododecan-2-one Chemical compound O=C1CNCCNCCNCCN1 XURIQWBLYMJSLS-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a venturi washing device for purifying tail gas of a phosphorus pentoxide production system, which comprises an air inlet pipe, an air outlet pipe and a scrubber, wherein the scrubber comprises a venturi tube and a degassing tank, the venturi tube comprises a contraction section, a throat section and an injection section which are sequentially communicated from top to bottom, the air inlet pipe is detachably arranged at the top of the contraction section through a flange component, a spray component with a downward outlet is arranged in the contraction section, a rotating shaft is rotatably arranged at the center of the lower part in the injection section through a bracket, a helical blade is arranged on the rotating shaft, the lower part of the injection section is embedded at the top of the degassing tank, a cyclone separator is arranged in the degassing tank at the upper side of the outlet of the injection section, a liquid level meter is arranged at the lower part of the degassing tank, and a liquid drain pipe is arranged at the bottom of the degassing tank. The device not only can realize better tail gas purifying effect, but also can reduce the cost of operation parts; and the moisture content in the exhaust gas can be reduced, and better social benefits can be generated.
Description
Technical Field
The utility model belongs to the technical field of phosphorus chemical production equipment, and particularly relates to a venturi washing device for purifying tail gas of a phosphorus pentoxide production system.
Background
At present, the industrial phosphorus pentoxide preparation generally adopts an oxidation combustion method: yellow phosphorus is used as a raw material, the yellow phosphorus is heated and melted and then is added into a combustion furnace, air after drying treatment is introduced into the combustion furnace to react with the yellow phosphorus for combustion, phosphorus pentoxide flue gas is generated, and cold separation and sedimentation are carried out on the phosphorus pentoxide flue gas to prepare a phosphorus pentoxide finished product. However, in the above-mentioned production process of phosphorus pentoxide, a small amount of phosphorus pentoxide, fluoride, arsenic and its compounds are contained in the tail gas after the separation of phosphorus pentoxide by cold separation and sedimentation, and if the produced tail gas is directly discharged, serious air pollution is caused, and there is a waste of resources. In the prior art, the tail gas discharged from the production of phosphorus pentoxide is mostly purified by adopting a single purifying device, such as a spray tower, a venturi scrubber and the like, and the independently prepared purifying device has the defects of high operation cost and large occupied area, and when the venturi scrubber is adopted for washing treatment, the flowing state of the tail gas in the venturi scrubber is poor due to the unreasonability of the design of the venturi scrubber, so that the phenomenon of hardening of dust in the venturi is extremely easy to be caused, phosphorus pentoxide, arsenic and the like carried in the tail gas cannot be thoroughly removed, and the defects of high moisture content of outlet clean flue gas and unsatisfactory purifying effect exist. Therefore, the venturi washing device for purifying the tail gas of the phosphorus pentoxide production system, which has the advantages of reasonable structure, low operation cost, good purification effect and low tail gas moisture content, is objectively required.
Disclosure of Invention
The utility model aims to provide the venturi washing device for purifying the tail gas of the phosphorus pentoxide production system, which has the advantages of reasonable structure, low operation cost, good purification effect and low tail gas moisture content.
The utility model aims at realizing the purposes, comprising an air inlet pipe, an air outlet pipe and a scrubber, wherein the scrubber comprises a venturi tube and a degassing tank, the venturi tube comprises a contraction section, a throat section and an injection section which are sequentially communicated from top to bottom, the air inlet pipe is detachably arranged at the top of the contraction section through a flange component, a spraying component with a downward outlet is arranged in the contraction section, a rotating shaft is rotatably arranged at the center of the lower part in the injection section through a bracket, a spiral blade is arranged on the rotating shaft, the lower part of the injection section is embedded at the top of the degassing tank, a cyclone separator is arranged in the degassing tank at the upper side of the outlet of the injection section, a liquid level meter is arranged at the lower part of the degassing tank, a liquid discharge pipe is arranged at the bottom of the degassing tank, a liquid discharge valve is arranged on the liquid discharge pipe, and the air outlet pipe is arranged at the top of the degassing tank.
The device has the advantages that: the device optimizes the structure of the Venturi scrubber, the length of the spraying section is prolonged, the spraying component is arranged at the upper part of the contraction section, so that after tail gas is mixed with water mist sprayed by the spraying component, the flow speed of the air flow is gradually increased, the flow speed of the air flow reaches the maximum value when the water mist flows at high speed in the throat section, the water mist flowing at high speed can fully contact phosphorus pentoxide in the tail gas and is condensed into phosphoric acid water drops, when the water mist flows in the spraying section, the flow speed of the air flow is gradually reduced, the pressure is increased, the phosphoric acid water drops are mutually condensed together to form larger phosphoric acid water drops, the phosphoric acid water drops are conveniently separated after spiral movement at spiral blades, the separated water drops are collected at the lower part of the degassing tank and are discharged outwards through the liquid discharge pipe, the tail gas enters the degassing tank, the arranged Venturi scrubber can thoroughly remove phosphorus pentoxide in the tail gas, a good tail gas purifying effect is realized, and meanwhile, the tail gas scrubber is not applicable to a high-power energy consumption device in the use process, and the operation cost is lower; and secondly, the exhaust cyclone can carry out cyclone separation treatment on exhaust, so that water mist carried in the exhaust is removed, the moisture content in the exhaust is reduced, and the purification effect of the exhaust is further improved. The device has reasonable structure, is easy to implement, can generate better social benefit, and is easy to popularize and use.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic top view of a cyclonic separating plate;
in the figure: 1-air inlet pipe, 2-air outlet pipe, 3-venturi pipe, 31-contraction section, 32-throat section, 33-gas-liquid mixing zone, 34-turbulence zone, 35-diffusion zone, 36-diversion zone, 4-degassing tank, 5-spraying component, 51-water inlet pipe, 52-elbow pipe, 53-atomization pipe, 54-atomization umbrella cap, 55-fixed ring plate, 56-adjusting screw, 57-adjusting plate, 58-guiding screw, 59-locking nut, 6-rotating shaft, 7-helical blade, 8 cyclone separator, 9-liquid level meter, 10-liquid discharge pipe, 11-circulation pipe, 12-baffle plate.
Description of the embodiments
The utility model is further described below with reference to the accompanying drawings, without limiting the utility model in any way, and any alterations or modifications based on the teachings of the utility model are within the scope of the utility model.
As shown in fig. 1 to 3, the utility model comprises an air inlet pipe 1, an air outlet pipe 2 and a scrubber, the scrubber comprises a venturi tube 3 and a degassing tank 4, the venturi tube 3 comprises a contraction section 31, a throat section 32 and an injection section which are sequentially communicated from top to bottom, the air inlet pipe 1 is detachably arranged at the top of the contraction section 31 through a flange component, the flange component adopts a structure in the prior art, a plate flange, a band flange and the like can be used according to the pressure of the use, a spraying component 5 with a downward outlet is arranged in the contraction section 31, the spraying component 5 is used for spraying water mist into the contraction section 31, a rotating shaft 6 is rotatably arranged at the center of the lower part in the injection section through a bracket, a spiral vane 7 is arranged on the rotating shaft 6, the lower part of the injection section is embedded at the top of the degassing tank 4, a cyclone separator 8 is arranged in the degassing tank 4 at the upper side of the outlet of the injection section, a liquid level meter 9 is arranged at the lower part of the degassing tank 4, the liquid level meter 9 adopts a structure used in the prior art, a liquid draining valve 10 is arranged at the bottom of the degassing tank 4 according to the use pressure, a finished product between mediums and the purchase, and the liquid draining pipe 10 is arranged at the top of the degassing tank 4.
The working process of the device is as follows: the tail gas that phosphorus pentoxide production process produced enters into constriction section 31 through intake pipe 1, spray the water smoke in constriction section 31 through the spray assembly this moment, the water smoke of blowout mixes in constriction section 31 with tail gas, the velocity of flow of air flow grow gradually, when the tail gas water smoke that forms after mixing gets into throat section 32, the velocity of flow of air flow reaches the maximum, the water smoke that flows at a high speed just can fully contact phosphorus pentoxide in the tail gas and condense into phosphoric acid water droplet, and when in the spray section, the velocity of flow of air is diminishing gradually, the flow is prolonged, pressure rebound, phosphoric acid water droplet mutually gathers together and forms great phosphoric acid water droplet when moving down, be convenient for realize the separation of water droplet and tail gas behind spiral blade 7 department spiral motion of phosphoric acid water droplet, phosphoric acid water droplet after the separation is collected in the lower part of degassing tank 4 and is discharged outwards through fluid-discharge pipe 10, the tail gas enters into degassing tank 4, the tail gas cyclone 8 that sets up in the degassing tank 4 can carry out the separation treatment to the wet tail gas, and then get rid of the water smoke that carries in the tail gas, and further improve the purification effect of the moisture content in the tail gas.
Further, in order to realize efficient and continuous contact reaction, the spraying section comprises a gas-liquid mixing area 33, a turbulence area 34, a diffusion area 35 and a diversion area 36 which are sequentially arranged from top to bottom, wherein the gas-liquid mixing area 33 is of a cone structure with a small upper end and a large lower end, the turbulence area 34 is of a structure formed by connecting at least two spheres up and down, the diffusion area 35 is of a cone structure with a small upper end and a small lower end, the diversion area 36 is of a cylinder structure, and the turbulence area 34 is arranged between the gas-liquid mixing area 33 and the diffusion area 35, so that the gas-liquid mixing degree can be enhanced, the instant mass transfer can be realized very efficiently, and the effect of absorbing and purifying water mist can be promoted.
Further, in order to realize the efficient mixing of water smoke and tail gas, spray subassembly 5 inlet tube 51, return bend 52 and atomizing pipe 53, inlet tube 51 runs through and installs on shrink section 31, install inlet valve and force (forcing) pump in proper order on the inlet tube 51, the return bend 52 is installed and is located the inside inlet tube 51 tip of shrink section 31, atomizing pipe 53 is installed in the lower extreme of return bend 52, is provided with atomizing umbrella cap 54 in the below of atomizing pipe 53, install the elevating system that drives atomizing umbrella cap 54 and go up and down on the outer wall of atomizing pipe 53, after atomizing pipe 53 blowout water smoke through the evenly distributed of atomizing umbrella cap 54, can be full of shrink section 31's inside, realize the even spraying to the tail gas, simultaneously, the elevating system of setting can realize that the interval of atomizing umbrella cap 54 and atomizing pipe 53 is adjustable, and then realizes the adjustable of spraying space size, reaches the regulation of adjusting spraying pressure size. Preferably, the lifting mechanism comprises a fixed ring plate 55, an adjusting screw 56 and an adjusting plate 57, the upper end of the adjusting screw 56 is vertically arranged at the top of the inner side of the atomizing umbrella cap 54, the adjusting plate 57 is rotatably arranged at the lower end of the adjusting screw 56, 3-5 guide holes are uniformly distributed on the atomizing umbrella cap 54, a guide screw 58 is slidably arranged in the guide holes, the upper end of the guide screw is fixedly connected with the fixed ring plate, the lower end of the guide screw 58 is rotatably arranged on the adjusting plate 57, a locking nut 59 is rotatably arranged between the guide screw 58, the adjusting screw 56 and the upper surface and the lower surface of the adjusting plate 57, during adjustment, the locking nut 59 is unscrewed, the adjusting screw 56 drives the atomizing umbrella cap 54 to ascend or descend along the guide screw 58, the distance between the atomizing umbrella cap 54 and the atomizing pipe 53 can be adjusted, and after adjustment, the locking nut 59 is screwed.
Further, in order to reduce the running cost of the device, the liquid discharge pipe 10 is provided with a circulation pipe 11, the circulation pipe 11 is provided with a control valve, the circulation pipe 11 is communicated with a water inlet pipe 51 between the booster pump and the water inlet valve, and the water discharged from the liquid discharge pipe 10 can be returned to the spray assembly for recycling.
Further, the cyclone separator 8 comprises a plurality of cyclone plate fins, the cyclone plate fins are uniformly arranged between the injection section and the degassing tank 4 at an angle of 10-20 degrees, the cyclone plate fins can enable the tail gas to ascend in a cyclone way in the degassing tank 4, water mist carried in the tail gas can be separated in the cyclone ascending process, the purpose of gas-liquid separation is achieved, and the water mist content in the tail gas is reduced. Preferably, the cyclone separator 8 is at least two layers according to the requirements of use.
Further, a plurality of layers of baffle plates 12 are arranged in the degassing tank 4 between the upper layer of cyclone separators 8 and the lower layer of cyclone separators at intervals, the section shape of each baffle plate 12 is in a ladder shape, the baffle plates 12 can change the ascending flow direction of tail gas in the degassing tank 4, and the ascending speed of the tail gas is reduced, so that the purpose of efficiently removing water mist can be achieved.
Claims (8)
1. The utility model provides a phosphorus pentoxide production system tail gas purification uses venturi washing device, includes intake pipe (1), blast pipe (2) and scrubber, its characterized in that: the scrubber comprises a venturi tube (3) and a degassing tank (4), the venturi tube (3) comprises a contraction section (31), a throat section (32) and an injection section which are sequentially communicated from top to bottom, the air inlet pipe (1) is detachably arranged at the top of the contraction section (31) through a flange component, a spray component (5) with an outlet downwards is arranged in the contraction section (31), a rotating shaft (6) is rotatably arranged at the center of the lower part in the injection section through a bracket, a helical blade (7) is arranged on the rotating shaft (6), the lower part of the injection section is embedded at the top of the degassing tank (4), a cyclone separator (8) is arranged in the degassing tank (4) at the upper side of the outlet of the injection section, a liquid level meter (9) is arranged at the lower part of the degassing tank (4), a liquid discharge pipe (10) is arranged at the bottom of the degassing tank (4), a liquid discharge valve is arranged on the liquid discharge pipe (10), and the exhaust pipe (2) is arranged at the top of the degassing tank (4).
2. The venturi scrubbing apparatus for purifying exhaust gas of a phosphorus pentoxide production system according to claim 1, wherein: the jet section comprises a gas-liquid mixing area (33), a turbulent flow area (34), a diffusion area (35) and a diversion area (36) which are sequentially arranged from top to bottom, the gas-liquid mixing area (33) is of a cone structure with a small upper end and a large lower end, the turbulent flow area (34) is of a structure formed by connecting at least two spheres up and down, the diffusion area (35) is of a cone structure with a small upper end and a small lower end, and the diversion area (36) is of a cylinder structure.
3. The venturi scrubbing apparatus for purifying exhaust gas of a phosphorus pentoxide production system according to claim 1, wherein: spray subassembly (5) inlet tube (51), return bend (52) and atomizing pipe (53), inlet tube (51) run through and install on shrink section (31), inlet valve and force (forcing) pump have been installed in proper order on inlet tube (51), return bend (52) are installed and are located inside inlet tube (51) tip of shrink section (31), atomizing pipe (53) are installed in the lower extreme of return bend (52), are provided with atomizing umbrella cap (54) in the below of atomizing pipe (53), install the elevating system who drives atomizing umbrella cap (54) oscilaltion on atomizing pipe (53) outer wall.
4. A venturi scrubbing apparatus for purifying exhaust gas of a phosphorus pentoxide production system according to claim 3, wherein: the lifting mechanism comprises a fixed ring plate (55), an adjusting screw (56) and an adjusting plate (57), wherein the upper end of the adjusting screw (56) is vertically arranged at the top of the inner side of the atomizing umbrella cap (54), the adjusting plate (57) is rotatably arranged at the lower end of the adjusting screw (56), 3-5 guide holes are uniformly distributed on the atomizing umbrella cap (54), a guide screw (58) is slidably arranged in the guide holes, the upper end of the guide screw is fixedly connected with the fixed ring plate, the lower end of the guide screw (58) is rotatably arranged on the adjusting plate (57), and a locking nut (59) is rotatably arranged between the guide screw (58), the adjusting screw (56) and the upper surface and the lower surface of the adjusting plate (57).
5. A venturi scrubbing apparatus for purifying exhaust gas of a phosphorus pentoxide production system according to claim 3, wherein: the liquid discharge pipe (10) is provided with a circulating pipe (11), the circulating pipe (11) is provided with a control valve, and the circulating pipe (11) is communicated with a water inlet pipe (51) between the booster pump and the water inlet valve.
6. The venturi scrubbing apparatus for purifying exhaust gas of a phosphorus pentoxide production system according to claim 1, wherein: the cyclone separator (8) comprises a plurality of cyclone plate fins which are uniformly arranged between the injection section and the degassing tank (4) at an angle of 10-20 degrees.
7. The venturi scrubbing apparatus for purifying exhaust gas of a phosphorus pentoxide production system according to claim 1, wherein: the cyclone separator (8) is at least two layers.
8. The venturi scrubbing apparatus for purifying exhaust gas of a phosphorus pentoxide production system according to claim 1, wherein: a plurality of layers of baffle plates (12) are arranged in the degassing tank (4) between the upper layer of cyclone separators (8) and the lower layer of cyclone separators at intervals, and the section shape of each baffle plate (12) is in a ladder shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321921366.3U CN220478455U (en) | 2023-07-20 | 2023-07-20 | Venturi washing device for purifying tail gas of phosphorus pentoxide production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321921366.3U CN220478455U (en) | 2023-07-20 | 2023-07-20 | Venturi washing device for purifying tail gas of phosphorus pentoxide production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220478455U true CN220478455U (en) | 2024-02-13 |
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ID=89830579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321921366.3U Active CN220478455U (en) | 2023-07-20 | 2023-07-20 | Venturi washing device for purifying tail gas of phosphorus pentoxide production system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220478455U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118122088A (en) * | 2024-05-06 | 2024-06-04 | 青海华鑫再生资源有限公司 | Zinc is smelted with even acid mist purifier who sprays |
-
2023
- 2023-07-20 CN CN202321921366.3U patent/CN220478455U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118122088A (en) * | 2024-05-06 | 2024-06-04 | 青海华鑫再生资源有限公司 | Zinc is smelted with even acid mist purifier who sprays |
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