CN114618288B - Three-stage spraying treatment equipment for ventilation liquid locking assembly and tail gas containing inflammable gas - Google Patents
Three-stage spraying treatment equipment for ventilation liquid locking assembly and tail gas containing inflammable gas Download PDFInfo
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- CN114618288B CN114618288B CN202210290620.8A CN202210290620A CN114618288B CN 114618288 B CN114618288 B CN 114618288B CN 202210290620 A CN202210290620 A CN 202210290620A CN 114618288 B CN114618288 B CN 114618288B
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- 238000009423 ventilation Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 title claims description 54
- 238000005507 spraying Methods 0.000 title abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 59
- 239000007921 spray Substances 0.000 claims description 58
- 239000003513 alkali Substances 0.000 claims description 9
- 239000005662 Paraffin oil Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims 2
- 230000001681 protective effect Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 52
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 8
- 239000002912 waste gas Substances 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 7
- 238000005984 hydrogenation reaction Methods 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 238000005273 aeration Methods 0.000 description 5
- 241000282414 Homo sapiens Species 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910001872 inorganic gas Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000011272 standard treatment Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004148 unit process Methods 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
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/06—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
-
- 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
- B01D53/14—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 by absorption
- B01D53/1406—Multiple stage absorption
-
- 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
- B01D53/14—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 by absorption
- B01D53/1487—Removing organic compounds
-
- 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
- B01D53/14—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 by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
- B01D2252/205—Other organic compounds not covered by B01D2252/00 - B01D2252/20494
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/40—Absorbents explicitly excluding the presence of water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/108—Hydrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention belongs to the technical field of environmental protection, and particularly relates to a ventilation liquid-locking assembly and a three-stage spraying treatment device for tail gas containing flammable gas.
Description
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to a ventilation liquid locking assembly and a three-stage spraying treatment device for tail gas containing flammable gas.
Background
The relationship between human beings and chemical industry is very close, some chemical products play an epoch-making important role in the human development history, and the production and application of the chemical products even represent a certain historical stage of human civilization, and from the time of formation of the chemical products, the chemical products provide necessary basic substances for various industrial departments. The waste gas discharged in chemical production often contains various pollutants, has complex physical and chemical properties and different toxicity, seriously pollutes the environment and affects the health of human bodies, and can be discharged into the atmosphere after being treated and detoxified by various means.
Hydrogenation is a chemical unit process, and a process of reacting organic matters with hydrogen is an important process for producing chemical products in modern industry. The hydrogenation tail gas contains inflammable and explosive pollutants such as hydrogen, organic VOC and inorganic gas, and the conventional activated carbon adsorption or CO/TO combustion process cannot safely and effectively treat the pollutants. Therefore, the waste gas treatment device with good treatment effect, convenient use and safety is found to be an important concern in the pollution treatment industry.
Disclosure of Invention
According to the defects of the prior art, the invention aims to provide the ventilation liquid locking assembly and the three-stage spraying treatment equipment for the tail gas containing the inflammable gas, which have the advantages of compact structure, small occupied area, independent circulation of circulating liquid in a grading manner, no gas accumulation and the like.
In order to achieve the above purpose, the technical scheme adopted is as follows:
the invention aims at providing an air-ventilation liquid-locking assembly, which comprises a cylinder body, a frustum cover and a double cone, wherein the frustum cover and the double cone are arranged in the cylinder body, the lower bottom edge of the frustum cover is fixedly arranged in the cylinder body, a reflux pipe orifice is arranged on the cylinder body at a position matched with the lower bottom edge of the frustum cover, and the double cone is fixedly arranged above the frustum cover and is provided with an air flow channel with the frustum cover;
the double-cone comprises an upper cone body and a lower cone body, the cone top of the upper cone body is upward, the cone top of the lower cone body is downward, the cone bottom diameter of the upper cone body is larger than the cone bottom diameter of the lower cone body and the upper bottom diameter of the frustum cover, the upper cone body is arranged above the lower cone body, an air flow channel is arranged between the upper cone body and the lower cone body, an air vent is arranged at the cone top of the upper cone body, a lower cone bottom pipe is arranged at the cone top of the lower cone body, and the lower cone bottom pipe obliquely extends downwards to above the cone surface of the frustum cover.
Further, the bipyramid is fixed above the frustum cover through a connecting rod.
Still further, the connecting rod is the strip, is three at least.
The invention aims at providing a third-stage spraying treatment device for tail gas containing flammable gas, which comprises the ventilation liquid locking assembly, and mainly comprises a three-stage dividing and three-stage water tank, a vertical third-stage sectional independent spraying tower body, a circulating spraying assembly and an air escape communication pipeline, wherein the vertical third-stage sectional independent spraying tower body is divided into three-stage spraying of an A spraying section, a B spraying section and a C spraying section from top to bottom, each spraying section comprises a combined demister, a spray header and a gas-liquid contactor from top to bottom, and the ventilation liquid locking assembly is arranged below the gas-liquid contactor in the A spraying section and the B spraying section.
Furthermore, the grid-dividing triple water tank is formed by triple of an A circulating water tank, a B circulating water tank and a C circulating water tank, and the internal liquid is water, paraffin oil and alkali liquor respectively and corresponds to the spraying liquid of the A spraying section, the B spraying section and the C spraying section of the spraying tower body.
Still further, the A and B circulation water tanks are located at two ends, the C circulation water tank is located in the middle, and the C circulation water tank is located under the vertical three-stage sectional independent spray tower body.
Further, the tops of the circulating water tanks A and B are connected with the spray tower body through a gas escape communication pipeline with a check valve, so that circulating liquid flows back to entrain hydrogen gas entering the water tanks, the hydrogen gas is led into the tower body to be discharged from the top of the tower, and meanwhile, nitrogen protection gas is led into the circulating water tanks.
Further, the gas-liquid contactor is a longitudinal baffle plate, and the combined demister is a combined structure of the longitudinal baffle plate and the centrifugal cyclone plate.
Still further, the vertical baffle includes vertical baffle inner frame, vertical baffle baffling blade, vertical baffle outer support board, centrifugal whirl board includes centrifugal whirl board inner blind plate, centrifugal whirl board whirl blade and centrifugal whirl board outer support board.
Further, the circulation spray assembly includes a tower in and out line from the circulation tank.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts a single tower three-stage independent spray structure, three circulating liquids can be independently circulated, and waste gas is washed step by step from bottom to top.
2. The novel ventilation liquid locking assembly is adopted in the prior art, an upper cone is directly arranged at the upper part of a connecting rod, as shown in fig. 5, but in the structure, hydrogenation tail gas enters from a cone cover, most of hydrogenation tail gas overflows through a gap between the connecting rods and then moves upwards, but part of hydrogenation tail gas still accumulates at the cone top of the cone, hydrogen belongs to inflammable gas, and hidden danger of combustion and explosion can be generated after accumulation.
3. The invention adopts the non-blocking gas-liquid contactor and the combined demister component, so that the tower body is free from accumulation of dangerous gases such as hydrogen and the like, and the safety of equipment is ensured. The gas-liquid contactor is a longitudinal baffle plate, and the gas-liquid contact effect is enhanced through the liquid film turbulent mass transfer effect of gas-liquid reverse baffle; the combined demister is of a combined structure of a longitudinal baffle plate and a centrifugal cyclone plate, and gas-liquid separation is realized through baffle collision and cyclone centrifugal force.
4. According to the circulating water tank, the air escape communicating pipeline with the check valve is adopted to connect the top of the water tank with the tower body, so that circulating liquid flows back and hydrogen gas entrained in the water tank is led into the tower body to be discharged from the top of the tower, meanwhile, nitrogen protection gas is introduced into the circulating water tank, the nitrogen is utilized to purge harmful gases such as hydrogen in the water tank, and the like, and the harmful gases are led into the tower body from the air escape communicating pipeline, so that the dangerous gases are prevented from accumulating.
5. The invention adopts three-stage circulating liquid leaching absorption of alkali liquor, paraffin oil and water, wherein the first-stage alkali liquor absorbs and removes acidic and water-soluble pollutants in the tail gas, the second-stage paraffin oil absorbs and removes organic solvent organic pollutant in the tail gas by a similar compatible principle, and the third-stage circulating water strengthens and removes pollutant in the waste gas, so that the equipment can treat the waste gas up to the standard.
Drawings
FIG. 1 is a schematic diagram of a tertiary spray treatment device for tail gas containing flammable gas;
FIG. 2 is a schematic illustration of an vented lock assembly according to the present invention;
FIG. 3 is a schematic view of a centrifugal spin plate;
FIG. 4 is a schematic view of a longitudinal baffle;
FIG. 5 is a schematic diagram of a prior art vented lock assembly;
wherein, 1, A sprays the section; 2. b, spraying the section; 3. c, spraying the section; 4. a, a circulating water tank; 5. a circulating water tank B; 6. c, a circulating water tank; 7. a combined mist eliminator; 8. a gas-liquid contactor; 9. an aeration liquid locking assembly; 10. a gas escape communication pipeline; 11. a bicone; 111. an upper cone; 112. a lower cone; 113. a lower cone bottom pipe; 12. a frustum cover; 13. a connecting rod; 14. a spray header; 15. a return pipe orifice; 711. a blind plate in the centrifugal cyclone plate; 712. a centrifugal rotational flow plate rotational flow blade; 713. an outer support plate of the centrifugal cyclone plate; 811. an inner framework of the longitudinal baffle plate; 812. longitudinal baffle blades; 813. the outer support plate of the longitudinal baffle plate.
Detailed Description
The invention is described below in connection with examples which are given solely for the purpose of illustration and are not intended to limit the scope of the invention.
The utility model provides a contain flammable gas tail gas tertiary spray treatment facility, as shown in figure 1, mainly include the triple water tank of division, vertical tertiary segmentation independent spray tower body, circulation spray assembly, the gas escape UNICOM pipeline 10, wherein, vertical tertiary segmentation independent spray tower body divide into from top to bottom's A spray segment 1, B spray segment 2 and C spray segment 3 tertiary sprays, the triple water tank of division is A circulation tank 4, B circulation tank 5, C circulation tank 6 triple form, A circulation tank 4, B circulation tank 5, C circulation tank 6 upper portion intercommunication, wherein, A circulation tank 4 and B circulation tank 5 are located both ends, C circulation tank 6 is located the centre, and C circulation tank 6 is located the gas escape UNICOM pipeline 10 that vertical tertiary segmentation was independent spray tower body, B circulation tank 5 and A circulation tank 4's top is through taking check valve and spray tower body to link to each other, make the circulating fluid backward flow and carry the hydrogenation reaction tail gas that gets into in the water tank and lead in the tower body to discharge from the portion, simultaneously, circulation tank upper portion is equipped with the pipeline of connecting the guard gas, the nitrogen gas protection gas is let in the top of the circulation tank, utilize nitrogen gas protection gas, make use of the nitrogen gas to lead in the water tank to the harmful gas to carry out the gas to blow down in the dangerous gas, the gas can be carried out the gas from the pipeline 10 and the dangerous gas can be carried out from the gas removal of the gas has been effectively to the filter, the gas has been blown out from the gas has been obtained; the equipment adopts "alkali lye + paraffin oil + water" tertiary circulation liquid drip washing absorption, correspond A circulation water tank 4, B circulation water tank 5, C circulation water tank 6 inside liquid is water, paraffin oil, alkali lye respectively, correspond the A spraying section 1 of spray tower body simultaneously, B spraying section 2 and C spraying section 3 spray liquid, first order C spraying section 3 alkali lye absorbs acid and water-soluble pollutant in the tail gas and gets rid of, second level B spraying section 2 paraffin oil absorbs the organic solvent class organic pollutant in the tail gas through similar compatible principle and gets rid of, third level A spraying section 1 adopts circulating water to strengthen getting rid of pollutant in the waste gas, make equipment carry out standard treatment to waste gas.
Each spray section of the spray sections A, B, 2 and C comprises a combined demister 7, a spray header 14 and a gas-liquid contactor 8 from top to bottom, wherein the spray sections A, B, 1 and 2 are also provided with a ventilation liquid-locking assembly 9 below the gas-liquid contactor 8, the gas-liquid contactor 8 is a longitudinal baffle plate, the structure of the longitudinal baffle plate is shown in figure 4, the spray sections A, B, 2 and 3 comprise a longitudinal baffle plate inner framework 811, a longitudinal baffle plate baffle blade 812, a longitudinal baffle plate outer support plate 813, and a plurality of longitudinal baffle plate baffle blades 812 are arranged side by side and fixed on the longitudinal baffle plate inner framework 811 and the longitudinal baffle plate outer support plate 813; the combined demister 7 is a combined structure of a longitudinal baffle and a centrifugal cyclone plate, gas-liquid separation is achieved through baffle collision and cyclone centrifugal force, the structure of the centrifugal cyclone plate is shown in fig. 3, the combined demister comprises a centrifugal cyclone plate inner blind plate 711, a centrifugal cyclone plate cyclone blade 712 and a centrifugal cyclone plate outer support plate 713, the centrifugal cyclone plate inner blind plate 711 is arranged centrally, and a plurality of two ends of the centrifugal cyclone plate cyclone blade 712 are respectively connected to the centrifugal cyclone plate inner blind plate 711 and the centrifugal cyclone plate outer support plate 713.
The structure of the ventilation liquid locking assembly 9 is shown in fig. 2, the ventilation liquid locking assembly 9 mainly comprises a cylinder, a frustum cover 12 and a double cone 11, wherein the frustum cover 12 and the double cone 11 are arranged in the cylinder, the lower bottom edge of the frustum cover 12 is fixedly arranged in the cylinder, the frustum cover 12 is hollow, namely, no upper bottom and no lower bottom are arranged, a reflux pipe orifice 15 is arranged at a position on the cylinder, which is matched with the lower bottom edge of the frustum cover 12, the double cone 11 is fixedly arranged above the frustum cover 12 through a connecting rod 13, and the connecting rod 13 is in a strip shape, so that at least three conical bodies 112 are supported; the double-cone 11 comprises an upper cone 111 and a lower cone 112, the cone top of the upper cone 111 is upward, the cone top of the lower cone 112 is downward, the cone bottom diameter of the upper cone 111 is larger than the cone bottom diameter of the lower cone 112 and the upper bottom diameter of the frustum cover 12, the upper cone 111 is arranged above the lower cone 112, a vent hole is arranged between the upper cone 111 and the lower cone 112, a vent hole is also arranged at the cone top of the upper cone 111, a lower cone bottom pipe 113 is arranged at the cone top of the lower cone 112, and the lower cone bottom pipe 113 extends obliquely downwards to above the cone surface of the frustum cover 12.
The circulating liquid falling from the upper part can be effectively collected under the structure of the assembly, the circulating liquid of the layer is prevented from flowing to the circulating system of the lower layer, and the low resistance of waste gas can be ensured to pass through. The vent holes are arranged at the connecting positions of the upper cone 111 and the lower cone 112, so that the situation that hydrogen accumulation does not occur at the connecting positions of the upper cone and the lower cone can be ensured, the gas which is originally accumulated at the top of the upper cone 111 overflows through the vent holes at the top of the upper cone 111, circulating liquid flowing down through the vent holes of the upper cone 111 is caught by the lower cone 112, is discharged into a cavity between the frustum cover 12 and the cylinder body through the lower cone bottom pipe 113, and returns to the circulating box through the backflow pipe orifice 15, so that the gas in the double cones 11 cannot be accumulated, and the danger is reduced.
The circulating spray assembly comprises a tower inlet pipeline from a circulating water tank, water from the circulating water tank A enters a spray header 14 between the combined demister 7 and the gas-liquid contactor 8 through the pipeline, after being sprayed out of the spray header 14, the water reaches the aeration lock liquid assembly 9 through the gas-liquid contactor 8 below, then flows back to the circulating water tank A through a reflux pipe orifice 15 at the bottom of the aeration lock liquid assembly 9, paraffin oil from the circulating water tank B5 enters the spray header 14 between the combined demister 7 and the gas-liquid contactor 8 through the pipeline, after being sprayed out of the spray header 14, the water reaches the aeration lock liquid assembly 9 through the gas-liquid contactor 8 below, then flows back to the circulating water tank B through the reflux pipe orifice 15 at the bottom of the aeration lock liquid assembly 9, alkali liquor from the circulating water tank C enters the spray header 14 between the combined demister 7 and the gas-liquid contactor 8 through the pipeline, after being sprayed out of the spray header 14, the alkali liquor from the circulating water tank C enters the circulating water tank C6 directly below through the gas-liquid contactor 8 below, a gas-liquid contactor C section 8 is provided with a gas inlet below the circulating water tank C6, a gas inlet above the circulating water tank C6, hydrogenation reaction to be treated enters the tower top of the tower B through the gas inlet 3, and a spray tower B is discharged from the spray tower top 2 in sequence, and the tail gas is discharged from the spray tower top 1.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The ventilation liquid locking assembly is characterized by comprising a cylinder body, a frustum cover (12) and a double cone (11), wherein the frustum cover (12) and the double cone (11) are arranged in the cylinder body, the lower bottom edge of the frustum cover (12) is fixedly arranged in the cylinder body, a reflux pipe orifice (15) is arranged at a position on the cylinder body, which is matched with the lower bottom edge of the frustum cover (12), the double cone (11) is fixedly arranged above the frustum cover (12), and an airflow channel is reserved between the double cone and the frustum cover (12);
the double-cone (11) comprises an upper cone (111) and a lower cone (112), the cone top of the upper cone (111) faces upwards, the cone top of the lower cone (112) faces downwards, the cone bottom diameter of the upper cone (111) is larger than that of the lower cone (112) and that of the frustum cover (12), the upper cone (111) is arranged above the lower cone (112), an airflow channel is arranged between the upper cone (111) and the lower cone (112), an air vent is arranged at the cone top of the upper cone (111), a lower cone bottom pipe (113) is arranged at the cone top of the lower cone (112), and the air vent is uniformly arranged at the joint of the upper cone and the lower cone, and the lower cone bottom pipe (113) obliquely extends downwards to above the cone of the frustum cover (12).
2. The venting lock fluid assembly according to claim 1, wherein the double cone (11) is fixed above the frustum housing (12) by a connecting rod (13).
3. A venting lock fluid assembly according to claim 2, wherein the connecting rods (13) are strip-shaped, at least three.
4. The three-stage spray treatment equipment for the tail gas containing flammable gas is characterized by mainly comprising a three-stage dividing and three-stage water tank, a vertical three-stage sectional independent spray tower body, a circulating spray assembly and an air escape communication pipeline (10), wherein the vertical three-stage sectional independent spray tower body is divided into three-stage sprays of an A spray section (1), a B spray section (2) and a C spray section (3) from top to bottom, each spray section comprises a combined demister (7), a spray header (14) and an air-liquid contactor (8) from top to bottom, and an air-ventilation liquid-locking assembly (9) as claimed in claim 1 is further arranged below the air-liquid contactor (8) in the A spray section (1) and the B spray section (2);
the gas-liquid contactor (8) is a longitudinal baffle plate, and the combined demister (7) is a combined structure of the longitudinal baffle plate and a centrifugal cyclone plate;
the longitudinal baffle comprises a longitudinal baffle inner framework (811), longitudinal baffle blades (812) and a longitudinal baffle outer supporting plate (813), and a plurality of longitudinal baffle blades (812) are arranged side by side and fixed on the longitudinal baffle inner framework (811) and the longitudinal baffle outer supporting plate (813); the centrifugal cyclone plate comprises a centrifugal cyclone plate inner blind plate (711), centrifugal cyclone plate cyclone blades (712) and a centrifugal cyclone plate outer support plate (713), wherein the centrifugal cyclone plate inner blind plate (711) is arranged in the middle, and two ends of the plurality of centrifugal cyclone plate cyclone blades (712) are respectively connected to the centrifugal cyclone plate inner blind plate (711) and the centrifugal cyclone plate outer support plate (713);
the grid-dividing triple water tank is divided into an A circulating water tank (4), a B circulating water tank (5) and a C circulating water tank (6), and spray liquids of an A spray section (1), a B spray section (2) and a C spray section (3) of the corresponding spray tower body are respectively stored; the liquid in the corresponding A circulation water tank (4), B circulation water tank (5) and C circulation water tank (6) is water, paraffin oil and alkali liquor respectively.
5. The combustible gas-containing tail gas three-stage spray treatment device according to claim 4, wherein the C circulating water tank (6) is positioned right below the vertical three-stage segmented independent spray tower body.
6. The three-stage spray treatment device for tail gas containing flammable gas according to claim 4, wherein the tops of the circulating water tank B (5) and the circulating water tank A (4) are connected with a spray tower body through a gas escape communication pipeline (10), and a pipeline connected with protective gas is arranged at the upper part of the circulating water tank.
7. The combustible gas-containing tail gas tertiary spray treatment apparatus of claim 4 wherein the circulating spray assembly includes a tower in and out line from a circulating water tank.
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| CN202210290620.8A CN114618288B (en) | 2022-03-23 | 2022-03-23 | Three-stage spraying treatment equipment for ventilation liquid locking assembly and tail gas containing inflammable gas |
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| CN114618288B true CN114618288B (en) | 2023-12-26 |
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| CN114618288A (en) | 2022-06-14 |
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