CN116531929B - Quenching tower device for improving acrylonitrile recovery rate - Google Patents
Quenching tower device for improving acrylonitrile recovery rate Download PDFInfo
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- CN116531929B CN116531929B CN202310819260.0A CN202310819260A CN116531929B CN 116531929 B CN116531929 B CN 116531929B CN 202310819260 A CN202310819260 A CN 202310819260A CN 116531929 B CN116531929 B CN 116531929B
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- 238000010791 quenching Methods 0.000 title claims abstract description 54
- 230000000171 quenching effect Effects 0.000 title claims abstract description 43
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000011084 recovery Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 121
- 238000001816 cooling Methods 0.000 claims abstract description 69
- 238000009826 distribution Methods 0.000 claims abstract description 47
- 239000007921 spray Substances 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims description 61
- 239000002253 acid Substances 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 claims description 27
- 239000012535 impurity Substances 0.000 claims description 23
- 210000001503 joint Anatomy 0.000 claims description 19
- 239000000428 dust Substances 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 44
- 229910021529 ammonia Inorganic materials 0.000 abstract description 22
- 238000006386 neutralization reaction Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 60
- 239000000498 cooling water Substances 0.000 description 15
- 238000005507 spraying Methods 0.000 description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 8
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012495 reaction gas Substances 0.000 description 3
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000007259 addition reaction Methods 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000561734 Celosia cristata Species 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- FXZWOQFWONGGEK-UHFFFAOYSA-N azane;prop-2-enenitrile Chemical compound N.C=CC#N FXZWOQFWONGGEK-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
- B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/50—Inorganic acids
- B01D2251/506—Sulfuric acid
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention belongs to the technical field of acrylonitrile production equipment, and particularly relates to a quenching tower device for improving the recovery rate of acrylonitrile, which comprises a cooling tower, a precooling mechanism, a water distribution component, a gas lift pipe and a spray frame, wherein the cooling tower consists of a lower quenching tower and an upper quenching tower; the water distribution assembly consists of a rotating head, a water distribution pipe, a water outlet, a guide sleeve, a lower adjusting plate, a rotating frame, a connecting rod, a guide wheel, an upper adjusting plate, a supporting rod, a first gear, a second gear, a first swing arm and a second swing arm. The invention can ensure the saturation of the neutralization ammonia, thereby improving the recovery rate of the acrylonitrile.
Description
Technical Field
The invention relates to the technical field of quench towers, in particular to a quench tower device for improving the recovery rate of acrylonitrile.
Background
In the preparation of acrylonitrile by ammoxidation of propylene, ammonia and air are ammoxidized by a fluidized bed reactor to produce acrylonitrile as a main product and acetonitrile, hydrocyanic acid, acrolein, acrylic acid, carbon monoxide and carbon dioxide as by-products, and also a small amount of unreacted propylene and ammonia. After the reaction gas leaves the reactor, the reaction gas enters a neutralization tower after cooling, and unreacted ammonia is absorbed by sulfuric acid aqueous solution to generate ammonium sulfate so as to generate ammonium sulfate sewage. The gas from which the unreacted ammonia is removed enters a water absorption tower, and all organic matters in the gas are absorbed by low-temperature water. The absorption liquid is separated into high-purity acrylonitrile, hydrocyanic acid and crude acetonitrile through an acrylonitrile recovery and refining process.
In the acrylonitrile production process, the quenching tower device is generally required to spray sulfuric acid liquid to remove unreacted ammonia in reaction gas, and the quenching tower device rotates and distributes water to the filler through a rotary water distributor when spraying the acid liquid, so that the cooled acid liquid precools and neutralizes the unreacted ammonia in tail gas, but the conventional rotary water distributor has smaller coverage by spraying water flow through water spraying ports distributed at intervals, and cannot ensure the saturation effect of the lower section of the quenching tower on the neutralization of the unreacted ammonia.
Disclosure of Invention
The invention aims to provide a quenching tower device for improving the recovery rate of acrylonitrile so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the quenching tower device for improving the recovery rate of the acrylonitrile comprises a cooling tower, a precooling mechanism, a water distribution component, a gas lift pipe and a spray frame, wherein the cooling tower consists of a lower quenching tower and an upper quenching tower, the lower quenching tower and the upper quenching tower of the cooling tower are separated by the gas lift pipe arranged in the middle part, one side of the bottom of the cooling tower is connected with a tail gas pipe in a penetrating way,
the tail gas pipe penetrates through the middle part of the inner side of the cooling tower and is fixedly provided with a impurity removing box, one end of the tail gas pipe is in butt joint with the precooling mechanism, a water inlet pipe vertically penetrates through the middle of the bottom of the cooling tower, an acid injection pipe penetrating through the cooling tower is welded on one side of the water inlet pipe, a filler is arranged on the upper side of the precooling mechanism, and a water distribution component is arranged at the top end of the water inlet pipe penetrating through and extending out of the filler;
the water distribution assembly consists of a rotating head, a water distribution pipe, a water outlet, a guide sleeve, a lower adjusting plate, a rotating frame, a connecting rod, a guide wheel, an upper adjusting plate, a supporting rod, a first gear, a second gear, a first swing arm and a second swing arm, the upper end of the water inlet pipe is movably connected with the rotating head, the outer wall of the rotating head is connected with the water distribution pipe, the surface of the water distribution pipe is provided with the water outlet, a spray frame is arranged in the upper section quenching tower of the cooling tower, a foam remover is arranged at the top of the spray frame, and the foam remover is arranged on the inner wall surface of the cooling tower.
Preferably, the top head of the cooling tower is connected with a tail gas recovery pipe, the bottom of the cooling tower is connected with a lower section kettle liquid discharge pipe, the lower section kettle liquid discharge pipe is in butt joint with an input port of a first cooler, an output port of the first cooler is in butt joint with a water inlet pipe, the side surface of the cooling tower, which is close to a riser, is connected with an upper section kettle liquid discharge pipe, the upper section kettle liquid discharge pipe is in butt joint with an input port of a second cooler, and an output port of the second cooler is in butt joint with a spray frame.
Preferably, the outer side of the water distribution pipe far away from the water outlet is welded with a guide sleeve, two sides of the guide sleeve, which are close to the inner wall of the water distribution pipe, are provided with arc-shaped sliding cavities, and two sides of the sliding cavity of the guide sleeve are respectively inserted with a lower adjusting plate and an upper adjusting plate;
the lower side of the lower adjusting plate is welded with a rotating frame penetrating through the reserved groove at the lower side of the guide sleeve, a connecting rod is fixed on one side of the rotating frame, and a guide wheel is movably connected to the lower end of one side of the rotating frame, which is close to the connecting rod.
Preferably, a support rod is welded on the upper side surface of the upper adjusting plate, a first gear and a second gear are movably mounted on one side, close to the guide wheel, of the guide sleeve through a rotating pin respectively, the first gear is meshed with the second gear, a first swing arm is welded on the outer side surface of the first gear, a second swing arm is welded on the outer side surface of the second gear, the first swing arm is connected with the connecting rod in an inserting mode through a strip-shaped hole of the end portion, and the second swing arm is connected with the support rod in an inserting mode through a strip-shaped hole of the end portion.
Preferably, the cooling tower is close to the inner wall face welding of riser downside and has the ring rail, and the upside surface of ring rail waiting the contained angle is provided with the arch, and the guide pulley is located the ring rail directly over.
Preferably, the inside of edulcoration box is fixed with two sets of filter, and the filter is the cockscomb structure, and the surface of filter is provided with the mesh, and the top welding of edulcoration box has the dust absorption pipe.
Preferably, the precooling mechanism comprises a liquid guide cavity, a collecting hopper, a rotary sleeve and a transmission blade, wherein the liquid guide cavity is arranged in a quenching tower at the lower section of the cooling tower, and one side of the liquid guide cavity is communicated with the tail gas pipe;
the upper side of the liquid guide cavity is welded with a collecting hopper which is communicated with the liquid guide cavity, a rotary sleeve is arranged in the liquid guide cavity, the outer wall of the rotary sleeve is welded with a transmission blade, and the rotary sleeve is connected with the water inlet pipe in a penetrating manner through an inner bearing.
Preferably, a regulating disc is connected between the upper section quenching tower of the cooling tower and the head of the tower through a flange, a baffle is welded on the inner side of the regulating disc, through holes distributed at equal included angles are formed in the surface of the baffle, a rotating shaft is connected to the middle of the baffle, three groups of circular plates are welded on the upper side surface of the baffle, and the three groups of circular plates are all concentric with the rotating shaft.
Preferably, a baffle bar for shielding the through hole is fixed at the outer side of the rotating shaft at equal included angles, one end of the baffle bar, which is far away from the rotating shaft, is connected with a tension spring, and one end of the tension spring, which is far away from the baffle bar, is in butt joint with the traction arm;
the baffle is close to the inner wall edge waiting contained angle of regulating disk and is provided with the lug, and the upside of lug and the tooth post swivelling joint of trailing arm, and the outside of trailing arm is provided with the operation ring, and the operation ring is through tooth post and the rack of operation ring inner wall meshing connection.
Preferably, two groups of transmission rods which are symmetrically distributed are welded on the outer side edge of the operation ring, the transmission rods are connected with sliding grooves formed in the outer wall of the adjusting disc in a penetrating mode, arc-shaped sealing plates are welded in the middle of the outer side of the adjusting disc in a penetrating mode, the outer ends of the transmission rods are connected with the output ends of the air cylinders in a rotating mode, and the tail ends of the air cylinders, far away from the transmission rods, are in butt joint with movable seats on the outer wall of the adjusting disc.
Compared with the prior art, the invention has the beneficial effects that:
1. in the use process, when the bulges on the ring rail are in extrusion contact with the guide wheels, the two groups of sawtooth groove structures of the lower regulating plate and the upper regulating plate are mutually close to each other, so that water flow sprayed from water outlets which are distributed at intervals can be regulated to be in a continuous water spraying state, the coverage surface of sprayed water flow can be increased, when the guide wheels on one side of the rotating frame are separated from extrusion contact with the bulges, the two groups of sawtooth groove structures which are distributed in a staggered manner can not shade the water outlets, and as the bulges are arranged on the ring rail at equal included angles, the state that the water distribution pipe sprays cooling water containing acid liquid can be regulated intermittently, so that the saturation of ammonia can be guaranteed when the cooling water containing the acid liquid is sprayed out by the water distribution component, and the recovery rate of acrylonitrile can be improved;
2. when the tail gas mixed with impurities flows through the impurity removing box in the use process, the filtering area of the filter plate with the zigzag structure can be increased, the dust collector arranged outside can suck impurities on the front side interception surfaces of the two groups of filter plates through the F-shaped dust collecting pipe by starting the electric control valve on the dust collecting pipe at regular intervals, meanwhile, high-temperature gas entering the liquid guide cavity can be directly blown to the rotating transmission blade, the transmission blade can drive the rotating water flow to continuously contact with the high-temperature gas, so that the high-temperature gas is fully contacted with cooling water, and the cooling liquid at the lower section of the quenching tower can be used for fully precooling the high-temperature gas;
3. when the tail gas moves upwards along the through hole on the surface of the regulating disc, the operating ring is pulled by the actuating cylinder to drive the transmission rod, so that racks on the inner wall of the operating ring are meshed with tooth columns of the traction arms to rotate, barrier strips distributed at equal angles are enabled to block the through holes distributed at equal angles when rotating, the barrier strips can block the through holes at the outer edge of the partition plate when rotating, the blocking surface of the through holes at the periphery of the annular plate is larger than the blocking surface of the through holes at the inner periphery of the annular plate, when the tail gas rises along the through holes, the flow rate of the through holes at the inner periphery of the annular plate is larger when the tail gas is discharged, and three groups of annular plates which are arranged in concentric circles can guide the discharged gas, so that acid liquid sprayed at the upper section of the quenching tower plays a role in efficiently flushing and washing the tail gas which is gathered and rises.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic top view of the ring rail of the present invention;
FIG. 3 is a schematic diagram of a front view of a water distribution assembly according to the present invention;
FIG. 4 is a schematic rear view of the water distribution assembly of the present invention;
FIG. 5 is a schematic diagram of a left-hand structure of the water distribution assembly of the present invention;
FIG. 6 is a schematic diagram of a left-hand structure of the water distribution assembly according to the present invention after the rotation angle;
FIG. 7 is a schematic view of a cross-sectional left-hand view of the water distribution assembly of the present invention;
FIG. 8 is a schematic view of a cross-sectional front view of the present invention illustrating the docking of the tail gas tube with the pre-cooling mechanism;
FIG. 9 is a schematic top view of a swivel case of the present invention;
FIG. 10 is a schematic top view of a cross-sectional structure of a tuning disk of the present invention;
FIG. 11 is a schematic top view of a cross-section of an adjusting plate with the angle of the barrier strips adjusted;
fig. 12 is an enlarged schematic view of the structure of fig. 11 a according to the present invention.
In the figure: 1. a cooling tower; 2. a tail gas pipe; 21. a impurity removal box; 22. a filter plate; 23. a mesh; 24. a dust collection pipe; 3. a precooling mechanism; 31. a liquid guiding cavity; 32. a collecting hopper; 33. a rotating sleeve; 34. a drive vane; 4. a water inlet pipe; 41. an acid injection pipe; 5. a filler; 6. a water distribution component; 61. turning the head; 62. a water distribution pipe; 63. a water outlet; 64. a guide sleeve; 65. a lower adjusting plate; 66. a rotating frame; 67. a connecting rod; 68. a guide wheel; 69. an upper adjusting plate; 610. a support rod; 611. a first gear; 612. a second gear; 613. a swing arm I; 614. swing arm II; 7. a circular rail; 71. a protrusion; 8. a riser; 9. an adjusting plate; 91. a partition plate; 92. a through hole; 93. a rotation shaft; 94. a circular plate; 95. a barrier strip; 96. a tension spring; 97. a traction arm; 98. an operating ring; 99. a rack; 910. a transmission rod; 911. a chute; 912. a sealing plate; 913. a cylinder; 10. a spray rack; 11. a demister; 12. a first cooler; 13. and a second cooler.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides an improve quick cooling tower device of acrylonitrile rate of recovery, including cooling tower 1, precooling mechanism 3, water distribution subassembly 6, riser 8 and spray frame 10, cooling tower 1 comprises lower section quick cooling tower and upper segment quick cooling tower, the lower section quick cooling tower of cooling tower 1 and upper segment quick cooling tower are separated by riser 8 that the middle part set up, one side of cooling tower 1 bottom runs through and is connected with tail gas pipe 2, tail gas pipe 2 runs through the middle part that stretches into cooling tower 1 inboard and is fixed with edulcoration box 21, one end of tail gas pipe 2 interfaces with precooling mechanism 3, vertically run through in the middle of the bottom of cooling tower 1 has inlet tube 4, one side welding of inlet tube 4 has the notes sour pipe 41 that runs through with cooling tower 1, the upside of precooling mechanism 3 is provided with filler 5, inlet tube 4 runs through the top that stretches out filler 5 and is provided with the water distribution subassembly 6 of ammonia; a spray frame 10 is arranged in the upper section quench tower of the cooling tower 1, a foam remover 11 is arranged at the top of the spray frame 10, the foam remover 11 is arranged on the inner wall surface of the cooling tower 1, a tail gas recovery pipe is connected with a top head of the cooling tower 1, an induced draft fan is arranged on the tail gas recovery pipe, the bottom of the cooling tower 1 is connected with a lower section kettle liquid discharge pipe, the lower section kettle liquid discharge pipe is in butt joint with an input port of a first cooler 12, an output port of the first cooler 12 is in butt joint with a water inlet pipe 4, the side surface of the cooling tower 1, which is close to a riser 8, is connected with an upper section kettle liquid discharge pipe, the upper section kettle liquid discharge pipe is in butt joint with an input port of a second cooler 13, an output port of the second cooler 13 is in butt joint with the spray frame 10, and water pumps are arranged at the input port and the output port of the first cooler 12 and the second cooler 13;
referring to fig. 1, 10 and 11, an adjusting disc 9 is connected between the upper quench tower and the top head of the cooling tower 1 through a flange, a partition plate 91 is welded on the inner side of the adjusting disc 9, through holes 92 distributed with equal included angles are formed in the surface of the partition plate 91, a rotating shaft 93 is connected to the middle part of the partition plate 91, three groups of annular plates 94 are welded on the upper side surface of the partition plate 91, the three groups of annular plates 94 are all arranged in concentric circles with the rotating shaft 93, a spray frame 10 is composed of a lower spray pipe, a middle spray pipe, an upper spray pipe and a water pipe, the spray frame 10 is in butt joint with an output port of a second cooler 13 through the water pipe, the water pipe is simultaneously fixedly communicated with the three groups of spray pipes, the lower spray pipe and the middle spray pipe are located below the adjusting disc 9, and the upper spray pipe is located above the adjusting disc 9.
In the specific implementation, the outlet of the acrylonitrile reactor is in butt joint with the tail gas pipe 2 of the cooling tower 1, so that the acrylonitrile gas mixed with impurities is led into the impurity removal box 21 along the tail gas pipe 2 for impurity removal, the high-temperature gas after impurity removal is subjected to quenching and cooling through the precooling mechanism 3 in the lower-stage quenching tower, during cooling, acid liquid is injected into the water inlet pipe 4 through the acid injection pipe 41, the acid liquid is sulfuric acid, cooling water in the first cooler 12 is pumped into the water distribution component 6 along the water inlet pipe 4 through the water pump for water distribution, so that the cooling water containing the acid liquid is downwards guided along the filler 5, thereby cooling and reacting the acrylonitrile tail gas, so that the acid liquid and unreacted ammonia in the acrylonitrile are subjected to neutralization reaction, the tail gas after reaction enters into the upper-stage quenching tower along the riser 8, sulfuric acid liquid is also injected into the cooling liquid sprayed out of the spray frame 10, so that the liquid can be further neutralized with ammonia, the tail gas after the reaction is treated by the water in the water injection pipe 11 at the upper side of the cooling tower 1, and then is discharged through the subsequent head of the tower top for further treatment;
the adjusting disk 9 is arranged between the upper quenching tower and the top head of the cooling tower 1 through a flange, and cooling water containing acid liquor is sprayed out through the spray frame 10, so that the acid liquor sprayed out by the lower spray pipe and the middle spray pipe can neutralize unreacted ammonia again for gas sprayed out by the riser pipe 8.
Referring to fig. 8, two groups of filter plates 22 are fixed inside the impurity removing box 21, the filter plates 22 are in a zigzag structure, meshes 23 for intercepting impurities are arranged on the surfaces of the filter plates 22, a dust collecting pipe 24 is welded at the top of the impurity removing box 21, the dust collecting pipe 24 is in an 'F' -shape, two dust collecting ends of the dust collecting pipe 24 are respectively positioned at the front side positions of the impurity interception of the two groups of filter plates 22, dust discharging ends of the dust collecting pipe 24 penetrate through and are led out of the cooling tower 1 to be butted with a dust collector, and an electric control valve for connecting and disconnecting pipelines is arranged on the dust collecting pipe 24.
When concrete implementation, when the tail gas that mixes with impurity flows through edulcoration box 21, on the direct impact of tail gas was to zigzag structure filter 22, mesh 23 intercepts the impurity in the tail gas, because filter 22 is zigzag structure, can increase filtration area, prevent that mesh 23 from blockking up, simultaneously, the filter effect has been improved in setting up of two sets of filter 22, through the automatically controlled valve on the regular opening dust absorption pipe 24, and start externally mounted's dust catcher, the front side filtration impurity through the dust absorption pipe 24 of dust catcher can be to two sets of filter 22 is faced impurity and is sucked, the impurity that will gather after the filtration is discharged regularly, and can derive the impurity in the mesh 23, prevent that mesh 23 from being blocked.
Referring to fig. 1, 8 and 9, the precooling mechanism 3 includes a liquid guiding cavity 31, a collecting hopper 32, a rotary sleeve 33 and a transmission blade 34, wherein the liquid guiding cavity 31 is arranged in a lower quenching tower of the cooling tower 1, and one side of the liquid guiding cavity 31 is communicated with the tail gas pipe 2; the upper side of the liquid guide cavity 31 is welded with a collecting hopper 32, the collecting hopper 32 is communicated with the liquid guide cavity 31, a rotary sleeve 33 is arranged in the liquid guide cavity 31, the outer wall of the rotary sleeve 33 is welded with a transmission blade 34, and the rotary sleeve 33 is connected with the water inlet pipe 4 in a penetrating way through an inner bearing; the top outer edge of the collecting hopper 32 is welded with the inner wall of the cooling tower 1, the bottom opening diameter of the collecting hopper 32 is smaller than the top opening diameter of the liquid guide cavity 31, the inner side diameter of the bottom of the liquid guide cavity 31 is larger than the inner side diameter of the top of the liquid guide cavity 31, the lower side surface of the liquid guide cavity 31 is provided with a water leakage port, the transmission blade 34 on the outer wall of the rotary sleeve 33 is of an arc-shaped structure, and the rotary sleeve 33 and the transmission blade 34 are of impeller-shaped structures.
In the concrete implementation, as the induced draft fan is arranged on the tail gas recovery pipe of the head of the tower, the running induced draft fan can suck the gas in the lower quenching tower to the upper quenching tower, when the tail gas after impurity removal enters the inside of the liquid guide cavity 31 along the tail gas pipe 2, the first cooler 12 sends cooling water into the water inlet pipe 4 through the water pump, the water distribution component 6 enables the cooling water mixed with acid liquid to flow downwards along the filler 5, the cooling water enters the liquid guide cavity 31 along the collecting hopper 32, the downwards collected cooling water can intensively impact the rotating sleeve 33 on the outer side surface of the water inlet pipe 4, and when the collected cooling water flows along the transmission blades 34, the transmission blades 34 generate thrust to enable the transmission blades 34 to drive the rotating sleeve 33 to rotate, and the rotation can be easier through the auxiliary effect of the bearing;
at this time, the high temperature gas entering the liquid guiding cavity 31 is directly blown to the rotating transmission blade 34, the transmission blade 34 drives the rotating water flow to be in contact with the high temperature gas continuously, so that the high temperature gas is in full contact with the cooling water, and the water leakage port is formed in the lower side of the liquid guiding cavity 31, so that the water flow can be quickly led into the bottom of the tower, the high temperature gas can be quickly cooled, the cooled gas rises along the collecting hopper 32, the heat exchange liquid is led into the first cooler 12 along the lower kettle liquid discharge pipe for cooling, and the cooled circulating liquid is led into the second cooler from the water inlet pipe 4 for recycling.
Referring to fig. 3-7, the water distribution assembly 6 is composed of a rotary head 61, a water distribution pipe 62, a water outlet 63, a guide sleeve 64, a lower adjusting plate 65, a rotary frame 66, a connecting rod 67, a guide wheel 68, an upper adjusting plate 69, a supporting rod 610, a first gear 611, a second gear 612, a first swing arm 613 and a second swing arm 614, wherein the upper end of the water inlet pipe 4 is movably connected with the rotary head 61, the outer wall of the rotary head 61 is connected with the water distribution pipe 62, the surface of the water distribution pipe 62 is provided with the water outlet 63, the outer side of the water distribution pipe 62 far away from the water outlet 63 is welded with the guide sleeve 64, both sides of the guide sleeve 64, which are close to the inner wall of the water distribution pipe 62, are respectively provided with an arc-shaped sliding cavity, the two sides of the sliding cavity of the guide sleeve 64 are respectively inserted with the lower adjusting plate 65 and the upper adjusting plate 69, and the water distribution pipe 62 is distributed at the outer side of the rotary head 61 at equal included angles;
a rotating frame 66 penetrating through a reserved groove at the lower side of the guide sleeve 64 is welded at the lower side of the lower adjusting plate 65, a connecting rod 67 is fixed at one side of the rotating frame 66, and a guide wheel 68 is movably connected at the lower end of one side of the rotating frame 66 close to the connecting rod 67; the lower adjusting plate 65 and the upper adjusting plate 69 are arc-shaped structures, the lower adjusting plate 65 and the upper adjusting plate 69 are in sliding connection with the sliding cavity on the inner wall of the guide sleeve 64, the side, close to the water outlet 63, of the lower adjusting plate 65 and the upper adjusting plate 69 is provided with sawtooth groove structures, and the sawtooth groove structures on the edges of the lower adjusting plate 65 and the upper adjusting plate 69 are distributed in a staggered mode;
the upper side surface of the upper adjusting plate 69 is welded with a support rod 610, one side of the guide sleeve 64, which is close to the guide wheel 68, is movably provided with a first gear 611 and a second gear 612 through rotating pins respectively, the first gear 611 and the second gear 612 are meshed with each other, the outer side surface of the first gear 611 is welded with a first swing arm 613, the outer side surface of the second gear 612 is welded with a second swing arm 614, the first swing arm 613 is spliced with the connecting rod 67 through a strip-shaped hole at the end part, and the second swing arm 614 is spliced with the support rod 610 through a strip-shaped hole at the end part.
In specific implementation, when the water inlet pipe 4 injects water into the rotary head 61 of the water distributor, the water distribution pipe 62 at the outer side of the rotary head 61 ejects water flow through the water outlet 63, so that the water distribution pipe 62 has a thrust for reverse rotation, the rotation of the water distributor is the prior art, when the water distribution pipe 62 rotates, the guide wheel 68 at the lower side of the rotary frame 66 is driven to move along the circular rail 7, when the bulge 71 at the upper side of the circular rail 7 is in extrusion contact with the guide wheel 68, the bulge 71 drives the guide wheel 68 to lift upwards to swing, the guide wheel 68 drives the rotary frame 66 and the lower adjusting plate 65 to slide and stretch out of the guide sleeve 64 when the guide wheel 68 moves upwards to swing, the rotary frame 66 extrudes along the strip-shaped hole of the first swing arm 613 through the connecting rod 67 at one side while swinging, so that the connecting rod 67 pushes the first swing arm 613 to rotate, so that the gear 611 at the end part of the first swing arm 613 is meshed with the second gear 612, the included angle between the first swing arm 613 and the second gear 612 is gradually reduced, and the second swing arm 614 extrudes the support rod 610 through the strip-shaped hole at the end part 614 when the swing, so that the support rod 610 pushes the upper adjusting plate 69 to slide out of the guide sleeve 64;
when the lower adjusting plate 65 and the upper adjusting plate 69 are close to each other, the staggered sawtooth groove structures of the lower adjusting plate 65 and the upper adjusting plate 69 are close to each other, so that the staggered sawtooth groove distances are gradually reduced, the two sawtooth groove structures can change the shape and structure of water flow sprayed out of the water outlet 63, when the two sawtooth groove structures are gradually close to each other, the water flow sprayed out of the water outlet 63 at intervals can be adjusted to be in a continuous water spraying state, meanwhile, the coverage surface of the sprayed water flow can be increased, when the guide wheel 68 on one side of the rotating frame 66 is separated from the extrusion contact with the protrusion 71, the rotating frame 66 reversely swings to drive the swing arm one 613 to reversely rotate and mesh the gear one 611 reversely, so that the gear two 612 drives the swing arm two 614 to reversely rotate, and the lower adjusting plate 65 and the upper adjusting plate 69 slide and shrink into the guide sleeve 64, and the two groups of staggered sawtooth groove structures are prevented from shielding the water outlet 63;
in order to improve the recovery rate of acrylonitrile in the quenching tower, the self-polymerization of acrylonitrile and the addition reaction of acrylonitrile-ammonia need to be inhibited as much as possible, the purpose of spraying acid liquor at the upper section of the quenching tower is to remove unreacted ammonia through the neutralization reaction between sulfuric acid and the unreacted ammonia, so that the addition reaction between acrylonitrile and ammonia is reduced, and meanwhile, the quenching system is acidic and is also beneficial to inhibiting the self-polymerization of acrylonitrile, so that the quenching tower is an important ring for improving the recovery rate of acrylonitrile by uniformly distributing the acid liquor when spraying liquid in a circulating way; the saw tooth grooves with different opening degrees can ensure that sprayed acid liquor impacts the edges of the saw tooth grooves to finish adjusting the coverage of sprayed acid liquor through intermittently adjusting the opening degree of the saw tooth groove structure, and in the process of changing the opening degree of the two saw tooth grooves, the pressure sprayed by the water outlet 63 can finish intermittent adjustment, the water outlet 63 can be impacted to realize anti-blocking, and when the reaction of acrylonitrile and ammonia is inhibited, the spraying track and the spraying quantity of the acid liquor are changed by adopting a spraying mode which is not limited by a conventional multi-nozzle, so that the inside of the cooling tower 1 is ensured to have high saturated acid liquor cooling water by changing the moment, the condition of strong alkalinity in a local area of spraying can be prevented, meanwhile, the self-aggregation and addition polymerization loss of the acrylonitrile can be avoided, the recovery rate of the acrylonitrile in the quenching tower can be improved, and the recovery rate of the acrylonitrile by the quenching tower is improved by 2%.
Referring to fig. 1 and 2, an inner wall surface of the cooling tower 1 near the lower side of the riser 8 is welded with a circular rail 7, a protrusion 71 is disposed on the upper surface of the circular rail 7 at equal angles, and a guide wheel 68 is located right above the circular rail 7.
In specific implementation, the protrusions 71 are arranged on the annular rail 7 at equal included angles, so that the state that the water distribution pipe 62 sprays cooling water containing acid liquor can be intermittently adjusted, and the water distribution assembly 6 can ensure the saturation of the neutralized ammonia when spraying the cooling water containing acid liquor.
Referring to fig. 10-12, a blocking strip 95 for shielding the through hole 92 is fixed at the outer side of the rotating shaft 93 at equal included angles, one end of the blocking strip 95 away from the rotating shaft 93 is connected with a tension spring 96, and one end of the tension spring 96 away from the blocking strip 95 is in butt joint with a traction arm 97; the baffle plate 91 is provided with a convex block close to the inner wall edge of the adjusting disk 9 and the like in an included angle, the upper side of the convex block is rotationally connected with tooth columns of the traction arms 97, the outer side of the traction arms 97 is provided with an operation ring 98, the operation ring 98 is in meshed connection with racks 99 on the inner wall of the operation ring 98 through the tooth columns, the inner side of the circular ring plate 94 is provided with reserved channels for the rotation of barrier strips 95, and the number of the barrier strips 95 is the same as that of the traction arms 97; two groups of symmetrically distributed transmission rods 910 are welded on the outer side edge of the operation ring 98, the transmission rods 910 are connected with a sliding groove 911 formed in the outer wall of the adjusting disc 9 in a penetrating mode, an arc-shaped sealing plate 912 is welded in the middle of the outer side of the adjusting disc 9 in a penetrating mode of the transmission rods 910, the outer ends of the transmission rods 910 are connected with the output end of an air cylinder 913 in a rotating mode, and the tail end of the air cylinder 913, which is far away from the transmission rods 910, is in butt joint with a movable seat of the outer wall of the adjusting disc 9.
When the tail gas moves upwards along the through holes 92 on the surface of the adjusting disk 9, the tail gas rises along six groups of through holes 92 distributed at equal included angles, so that the tail gas can be directly sprayed into the adjusting disk 9 to perform the final ammonia neutralization reaction on the tail gas when the acid liquid is sprayed out by the upper spray pipe, the transmission rod 910 is pulled by the starting cylinder 913, the operation ring 98 is pulled by the transmission rod 910 along the sliding groove 911, the operation ring 98 rotates outside the traction arm 97 distributed at equal included angles, racks 99 on the inner wall of the operation ring 98 are meshed with tooth columns of the traction arm 97 to rotate, the tension spring 96 is pulled when the traction arm 97 rotates, the baffle strip 95 is driven to rotate around the rotating shaft 93, the baffle strip 95 is enabled to cover the through holes 92 distributed at equal included angles when rotating, the baffle strip 95 can firstly cover the through holes 92 positioned at the outer edge of the baffle plate 91, the shielding surface of the through holes 92 at the periphery of the annular plate 94 is larger than the through holes 92 arranged at the inner periphery of the annular plate 94, when the tail gas rises along the through holes 92, the through holes 92 in the annular plate 94 can be enabled to rotate at the outer periphery of the annular plate 94, the rack 99 is meshed with the tooth columns of the traction arm 97, the toothed columns of the traction arm 97 can rotate, the tension spring 96 is driven by the baffle strip 95 rotates around the rotating shaft 93, the baffle strip 92, the through holes 92 distributed through holes at equal included in the edges, the tail gas can be sprayed out of the periphery, and the acid liquid can be sprayed out by the water by the concentric groups, and can be sprayed out and can reach the effect on the spray and can;
conversely, when the starting cylinder 913 is extended, the driving rod 910 is pushed to drive the operation ring 98 to reversely rotate, so that the barrier strips 95 distributed at equal included angles rotate in the reserved channels of the annular plate 94, and the barrier strips 95 are driven to move away from the through holes 92, when the liquid generated after tail gas is neutralized and ammonia is accumulated on the upper side of the riser 8 at the upper section of the quenching tower, the liquid in the upper-section kettle liquid discharge pipe is pumped into the second cooler 13 for cooling by the water pump at the input port of the second cooler 13, and when the driving rod 910 rotates, the arc-shaped sealing plate 912 can shield the sliding grooves 911, so that water mist sprayed inside the quenching tower is prevented from splashing.
In summary, the high temperature gas of the acrylonitrile reaction is cooled by the precooling mechanism 3 in the lower quenching tower, when the temperature is cooled, water is distributed by the water distribution component 6, so that the acid liquor and the unreacted ammonia in the acrylonitrile are neutralized, the tail gas after the reaction enters the upper quenching tower through the riser 8, then, the cooling liquid sprayed out by the spray rack 10 is further reacted with the neutralized ammonia, the tail gas after the reaction is treated by the demister 11 on the upper side of the cooling tower 1 and then is discharged through the tail gas recovery pipe of the top head of the tower, and the tail gas is further treated, thereby improving the recovery rate of the acrylonitrile.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (7)
1. The utility model provides an improve quench tower device of acrylonitrile rate of recovery, includes cooling tower (1), precooling mechanism (3), water distribution subassembly (6), riser (8) and spray frame (10), cooling tower (1) comprises hypomere quench tower and upper segment quench tower, hypomere quench tower and upper segment quench tower of cooling tower (1) are separated by riser (8) that the middle part set up, one side through connection of cooling tower (1) bottom has tail gas pipe (2), its characterized in that:
the device is characterized in that a impurity removal box (21) is fixed in the middle of the inner side of the tail gas pipe (2) penetrating and extending into the cooling tower (1), one end of the tail gas pipe (2) is in butt joint with the pre-cooling mechanism (3), a water inlet pipe (4) vertically penetrates through the middle of the bottom of the cooling tower (1), an acid injection pipe (41) penetrating through the cooling tower (1) is welded on one side of the water inlet pipe (4), a filler (5) is arranged on the upper side of the pre-cooling mechanism (3), and a water distribution component (6) is arranged on the top end of the filler (5) penetrating and extending out of the water inlet pipe (4);
the water distribution assembly (6) consists of a rotating head (61), a water distribution pipe (62), a water outlet (63), a guide sleeve (64), a lower adjusting plate (65), a rotating frame (66), a connecting rod (67), a guide wheel (68), an upper adjusting plate (69), a supporting rod (610), a first gear (611), a second gear (612), a first swing arm (613) and a second swing arm (614), wherein the upper end of the water inlet pipe (4) is movably connected with the rotating head (61), the outer wall of the rotating head (61) is connected with the water distribution pipe (62), the surface of the water distribution pipe (62) is provided with the water outlet (63), a spray frame (10) is arranged in the upper-section quenching tower of the cooling tower (1), a foam remover (11) is arranged at the top of the spray frame (10), and the foam remover (11) is arranged on the inner wall surface of the cooling tower (1); the outer side of the water distribution pipe (62) far away from the water outlet (63) is welded with a guide sleeve (64), two sides of the guide sleeve (64) close to the inner wall of the water distribution pipe (62) are provided with arc-shaped sliding cavities, and two sides of the sliding cavity of the guide sleeve (64) are respectively inserted with a lower adjusting plate (65) and an upper adjusting plate (69);
a rotating frame (66) penetrating through a reserved groove at the lower side of the guide sleeve (64) is welded at the lower side of the lower adjusting plate (65), a connecting rod (67) is fixed at one side of the rotating frame (66), and a guide wheel (68) is movably connected at the lower end of one side of the rotating frame (66) close to the connecting rod (67);
a support rod (610) is welded on the upper side surface of the upper adjusting plate (69), a first gear (611) and a second gear (612) are movably mounted on one side, close to the guide wheel (68), of the guide sleeve (64) through a rotating pin respectively, the first gear (611) and the second gear (612) are meshed with each other, a first swing arm (613) is welded on the outer side surface of the first gear (611), a second swing arm (614) is welded on the outer side surface of the second gear (612), the first swing arm (613) is spliced with the connecting rod (67) through a strip-shaped hole at the end part, and the second swing arm (614) is spliced with the support rod (610) through a strip-shaped hole at the end part;
the cooling tower (1) is close to the inner wall face welding of riser (8) downside and has ring rail (7), the upper side surface constant angle of ring rail (7) is provided with arch (71), and guide pulley (68) are located ring rail (7) directly over.
2. The quenching tower apparatus for increasing the recovery rate of acrylonitrile according to claim 1, wherein: the top of the tower head of cooling tower (1) is connected with the tail gas recovery pipe, the bottom of cooling tower (1) is connected with lower section cauldron liquid discharge pipe, and lower section cauldron liquid discharge pipe and the input port butt joint of a cooler (12) to the delivery outlet of a cooler (12) is docked with inlet tube (4), the side that cooling tower (1) is close to riser (8) is connected with upper section cauldron liquid discharge pipe, and upper section cauldron liquid discharge pipe and the input port butt joint of No. two coolers (13) to the delivery outlet of No. two coolers (13) is docked with spray frame (10).
3. The quenching tower apparatus for increasing the recovery rate of acrylonitrile according to claim 1, wherein: two groups of filter plates (22) are fixed in the impurity removal box (21), the filter plates (22) are of a zigzag structure, meshes (23) are arranged on the surfaces of the filter plates (22), and dust collection pipes (24) are welded at the tops of the impurity removal box (21).
4. The quenching tower apparatus for increasing the recovery rate of acrylonitrile according to claim 1, wherein: the precooling mechanism (3) comprises a liquid guide cavity (31), a collecting hopper (32), a rotary sleeve (33) and transmission blades (34), wherein the liquid guide cavity (31) is arranged in a lower section quench tower of the cooling tower (1), and one side of the liquid guide cavity (31) is communicated with the tail gas pipe (2);
the utility model discloses a liquid collecting device, including drain chamber (31), rotary sleeve (33), drive vane (34) are welded to the upside of drain chamber (31), drain chamber (32) and drain chamber (31) intercommunication, the inside of drain chamber (31) is provided with rotary sleeve (33), rotary sleeve (33) are through inboard bearing and inlet tube (4) through connection.
5. The quenching tower apparatus for increasing the recovery rate of acrylonitrile according to claim 2, wherein: there is regulating disk (9) through flange joint between the upper segment quench tower of cooling tower (1) and the top of the tower head, the inboard welding of regulating disk (9) has baffle (91), through-hole (92) that the contained angle distributes have been seted up on the surface of baffle (91), the middle part of baffle (91) is connected with rotation axis (93), the upside surface welding of baffle (91) has three group's ring board (94), and three group ring board (94) all are concentric circle setting with rotation axis (93).
6. The quenching tower apparatus for increasing acrylonitrile recovery rate according to claim 5, wherein: a blocking strip (95) for shielding the through hole (92) is fixed at the outer side of the rotating shaft (93) at equal included angles, one end of the blocking strip (95) far away from the rotating shaft (93) is connected with a tension spring (96), and one end of the tension spring (96) far away from the blocking strip (95) is in butt joint with a traction arm (97);
the baffle (91) is close to contained angle such as inner wall edge of regulating disk (9) and is provided with the lug, and the upside of lug and the tooth post swivelling joint of trailing arm (97), the outside of trailing arm (97) is provided with operation ring (98), operation ring (98) are through tooth post and rack (99) of operation ring (98) inner wall meshing connection.
7. The quenching tower apparatus for increasing acrylonitrile recovery rate according to claim 6, wherein: the outside edge welding of operation ring (98) has two sets of transfer line (910) that are symmetric distribution, spout (911) through connection that transfer line (910) offered with regulating disk (9) outer wall, transfer line (910) run through the middle part welding that stretches out regulating disk (9) outside has arc shape closing plate (912), the outer end of transfer line (910) and the output swivelling joint of cylinder (913), the tail end that transfer line (910) were kept away from to cylinder (913) is docked with the movable seat of regulating disk (9) outer wall.
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| CN214990966U (en) * | 2021-03-11 | 2021-12-03 | 浙江石油化工有限公司 | Nitrogen-reducing detoxifying pretreatment device for acrylonitrile wastewater |
| CN218002299U (en) * | 2022-06-13 | 2022-12-09 | 焦作市鼎昌化工设备有限公司 | Water distributor of cooling tower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1176636A (en) * | 1995-02-28 | 1998-03-18 | 旭化成工业株式会社 | Process for producing acrylonitrile |
| US5944094A (en) * | 1996-08-30 | 1999-08-31 | The Marley Cooling Tower Company | Dry-air-surface heat exchanger |
| CN1413983A (en) * | 2001-10-22 | 2003-04-30 | 中国石油化工股份有限公司 | Quench process for raising recovery of acrylonitrile |
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| CN218002299U (en) * | 2022-06-13 | 2022-12-09 | 焦作市鼎昌化工设备有限公司 | Water distributor of cooling tower |
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