CN220276656U - Integrated efficient chemical deodorization system - Google Patents
Integrated efficient chemical deodorization system Download PDFInfo
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- CN220276656U CN220276656U CN202321052091.4U CN202321052091U CN220276656U CN 220276656 U CN220276656 U CN 220276656U CN 202321052091 U CN202321052091 U CN 202321052091U CN 220276656 U CN220276656 U CN 220276656U
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- 239000000126 substance Substances 0.000 title claims abstract description 40
- 238000004332 deodorization Methods 0.000 title claims description 24
- 239000007788 liquid Substances 0.000 claims abstract description 136
- 238000010521 absorption reaction Methods 0.000 claims abstract description 75
- 238000012856 packing Methods 0.000 claims abstract description 27
- 230000001877 deodorizing effect Effects 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 abstract description 3
- 239000003814 drug Substances 0.000 description 31
- 239000007789 gas Substances 0.000 description 31
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 24
- 239000007864 aqueous solution Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 21
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 18
- 239000003344 environmental pollutant Substances 0.000 description 16
- 231100000719 pollutant Toxicity 0.000 description 16
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 11
- 239000005708 Sodium hypochlorite Substances 0.000 description 11
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 11
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 11
- 229910021529 ammonia Inorganic materials 0.000 description 9
- 239000008399 tap water Substances 0.000 description 9
- 235000020679 tap water Nutrition 0.000 description 9
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
- 239000013589 supplement Substances 0.000 description 7
- 238000012546 transfer Methods 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 230000003009 desulfurizing effect Effects 0.000 description 5
- 238000010790 dilution Methods 0.000 description 5
- 239000012895 dilution Substances 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- -1 amine compounds Chemical class 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 239000011800 void material Substances 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses an integrated high-efficiency chemical deodorizing system, which comprises at least one deodorizer, wherein the deodorizer comprises: the storage tank is used for storing absorption liquid, the reactor, one end is connected with the air inlet pipe through the reducer pipe, the other end is connected with the storage tank, a plurality of packing layers are arranged in the reactor at intervals, the lower part of a nozzle is arranged, a supporting ring is arranged between every two adjacent packing layers, an external connecting pipe is arranged, one end is connected with the nozzle arranged in the reactor, the other end is connected with a circulating liquid inlet pipe and a dosing pipe, a demister is arranged, one end is connected with the storage tank, the other end is connected with an air outlet pipe through the reducer pipe, two ends of a circulating pump are respectively connected with the circulating liquid inlet pipe and the storage tank, the system adopts a gas-liquid homodromous chemical technology, the treatment capacity is large, the pressure drop is small, the phenomenon of no liquid flooding occurs, the tower diameter and the tower height can be obviously reduced, the investment cost of the device is reduced, and the system has the advantages of good deodorizing effect, low investment and treatment cost, simple structure, easiness in operation and the like.
Description
Technical Field
The utility model belongs to the technical field of chemical deodorization, and particularly relates to an integrated efficient chemical deodorization system.
Background
Chemical deodorization is a process of absorbing and removing gaseous pollutants in malodorous gas by chemical absorption solution. Absorption processes can be classified into co-current (co-current) absorption and counter-current (counter-current) absorption according to the form of gas-liquid contact. At present, reverse flow absorption is a main flow process of chemical deodorization technology, and has the advantages of higher absorption rate, but also has the defects of low mass transfer and reaction efficiency, easiness in flooding, high pressure loss and the like due to the fact that the contact area between gas and liquid is too small. The advantage of the gas-liquid co-current absorption is that the pressure drop is smaller, the gas speed and the liquid flow can be larger, the flooding phenomenon can not exist, and the size of the absorption equipment can be smaller. Therefore, on the premise of the advantage of the co-current absorption, the improvement of the mass transfer capacity is an important research direction.
Currently, patent CN104289078A provides a double-effect co-current seawater desulfurizing tower. The desulfurizing tower has desulfurizing efficiency of 96-99%, pressure drop of 110-440pa, air speed of 6-11m/s, no flooding, 40-70% reduced tower diameter and 35-65% reduced height compared with gas-liquid countercurrent desulfurizing tower. Patent CN111471499B provides a tubular concurrent gas-liquid contact absorber. The absorber improves turbulence effect in the gas-liquid contact process, improves gas-liquid mass transfer efficiency, has the advantages of compact structure, large treatment capacity, simple operation and the like, and can be used in a natural gas dehydration or deacidification process. The two patents improve mass transfer capacity and efficiency by optimizing tray and spray combinations or increasing gas-liquid turbulence effects. However, the above patent is not directed to the use of malodorous gas chemical absorption. In addition, the technology is found through a plurality of field practices and theoretical evidence: the double-effect parallel-flow seawater desulfurizing tower is complex, and the pressure drop of the tubular parallel-flow gas-liquid contact absorber is large.
Therefore, it is currently desirable to provide a high-efficiency chemical deodorizing system with co-current gas-liquid flow.
Disclosure of Invention
The utility model aims at solving the problems of the existing high-efficiency chemical deodorization system lacking gas-liquid co-current flow aiming at the defects existing in the prior art.
In order to achieve the above object, the present utility model provides an integrated high-efficiency chemical deodorizing system comprising at least one deodorizer comprising:
a reservoir for storing an absorption liquid;
one end of the reactor is connected with the air inlet pipe through a reducing pipe, and the other end of the reactor is connected with the storage tank;
the packing layers are arranged in the reactor at intervals and positioned below the nozzles, and supporting rings are arranged between the adjacent packing layers;
one end of the external connecting pipe is connected with a nozzle positioned in the reactor, and the other end of the external connecting pipe is connected with a circulating liquid inlet pipe and a dosing pipe;
one end of the demister is connected with the storage tank, and the other end of the demister is connected with the air outlet pipe through a reducing pipe;
the two ends of the circulating pump are respectively connected with the circulating liquid inlet pipe and the storage tank;
the odor is discharged after passing through the reactor, the storage tank and the demister.
Optionally, the method further comprises:
a concentration detection unit for detecting the concentration of the absorption liquid;
the liquid level detection unit is used for detecting the storage quantity of the absorption liquid in the storage tank;
the two ends of the first electric valve are respectively connected with the storage tank and the water inlet pipe;
the two ends of the second electric valve are respectively connected with the dosing pipe and the storage tank;
and the automatic control unit is used for controlling the opening and closing of the first electric valve and the second electric valve according to the concentration detection unit and the liquid level detection unit.
Optionally, the filler layer comprises a plurality of overlapped screens, so that the atomized absorption liquid can absorb malodor components in the inlet air and gather into liquid drops.
Optionally, the method further comprises:
the upper wall in the storage tank is provided with a baffle plate for isolating the access hole from the demister and the reactor, and the lower end of the baffle plate is positioned below the liquid level of the absorption liquid;
the storage tank is provided with a plurality of mounting openings, the storage tank is provided with a plurality of filter plates, the mounting openings are arranged at the top of the storage tank and are positioned at the sides of the overhauling openings, the demister and the reactor are far away from each other, the bottom wall in the storage tank is provided with the upward filter plates, and the filter plates are positioned at one side, close to the overhauling openings, of the partition plates.
Optionally, the demister is of a folded plate type or a packing type.
Optionally, the nozzle array has a plurality of nozzles.
Optionally, the spray range of the nozzle covers the filler layer.
Optionally, the number of the deodorizers is multiple, and the multiple deodorizers are sequentially connected.
Optionally, the absorption liquids of a plurality of said deodorizers are different.
Optionally, the nozzle is an atomizing nozzle.
The integrated efficient chemical deodorization system has the beneficial effects that:
1. the system adopts a gas-liquid homodromous fluid chemical technology, has the advantages of large treatment capacity, small pressure drop, no flooding phenomenon, capability of obviously reducing the tower diameter and the tower height, reduction of the investment cost of the device, good deodorizing effect, low investment and treatment cost, simple structure, easy operation and the like.
2. The system increases the gas-liquid reaction contact surface through the combination of the nozzle and the multi-layer packing layer, has the advantages of high gas-liquid mass transfer efficiency and good deodorizing effect, and in addition, the multi-layer reaction packing is also beneficial to the gradual increase of the particle size of the liquid drops of the absorption liquid and then falls into the storage tank, so that the recovery rate of the absorption liquid is improved, the loss of the absorption liquid is reduced, and the system has the advantage of low treatment cost.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular descriptions of exemplary embodiments of the utility model as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the utility model.
Fig. 1 shows a schematic structural view of an integrated high-efficiency chemical deodorizing system according to one embodiment of the present utility model.
Fig. 2 illustrates a cross-sectional view of an integrated high efficiency chemical deodorizing system according to one embodiment of the present utility model.
Reference numerals illustrate:
1. a storage tank; 2. a reactor; 3. a filler layer; 4. an external connection pipe; 5. a nozzle; 6. a circulating liquid inlet pipe; 7. a dosing tube; 8. a demister; 9. an air inlet pipe; 10. an air outlet pipe; 11. an access opening; 12. a mounting port; 13. a partition plate; 14. and (5) a filter plate.
Detailed Description
Preferred embodiments of the present utility model will be described in more detail below. While the preferred embodiments of the present utility model are described below, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
As shown in fig. 1-2, an integrated high efficiency chemical deodorizing system includes at least one deodorizer comprising:
a reservoir 1 for storing an absorption liquid;
one end of the reactor 2 is connected with the air inlet pipe 9 through a reducing pipe, and the other end is connected with the storage tank 1;
a plurality of packing layers 3 are arranged in the reactor 2 at intervals and positioned below the nozzles 5, and support rings are arranged between adjacent packing layers 3;
an external connecting pipe 4, one end of which is connected with a nozzle 5 positioned in the reactor 2, and the other end of which is connected with a circulating liquid inlet pipe 6 and a dosing pipe 7;
one end of the demister 8 is connected with the storage tank 1, and the other end of the demister is connected with the air outlet pipe 10 through a reducing pipe;
the two ends of the circulating pump are respectively connected with the circulating liquid inlet pipe and the storage tank 1;
the odor is discharged after passing through the reactor 2, the storage tank 1 and the demister 8.
Specifically, the circulating pump pressurizes and circulates the absorption liquid, and the absorption liquid drops with small particle size and extremely large surface area are sprayed out through the nozzle. Through the reaction of absorption liquid drops with extremely large surface area and odor, the contact area of the absorption liquid and the odor is increased, and meanwhile, the rapid air inlet air speed can effectively disturb the spraying absorption liquid, so that the turbulence degree of the gas-liquid two-phase reaction interface is increased, and the gas-liquid mass transfer effect is improved. The filler layer 3 further absorbs malodorous components in the inlet air by the absorption liquid, gradually increases the particle size of liquid drops of the absorption liquid, then falls into the storage tank 1, improves the recovery rate of the absorption liquid, can assist disturbance of convection interaction between atomized absorption liquid and malodor, and removes the absorption liquid in the deodorized airflow by the demister 8, and recovers and discharges clean deodorizing gas.
Further, single-stage, multi-stage series connection or multi-stage parallel connection can be performed.
In this embodiment, further comprising:
a concentration detection unit for detecting the concentration of the absorption liquid;
a liquid level detection unit for detecting the storage amount of the absorption liquid in the storage tank 1;
the two ends of the first electric valve are respectively connected with the storage tank 1 and the water inlet pipe;
the two ends of the second electric valve are respectively connected with the dosing pipe 7 and the storage tank 1;
and the automatic control unit is used for controlling the opening and closing of the first electric valve and the second electric valve according to the concentration detection unit and the liquid level detection unit.
Specifically, the automatic control unit automatically operates after being started, so that the manual operation burden is reduced.
Further, the automatic control unit is also connected with a medicine supplementing pump, and can automatically supplement water, medicine liquid and the like according to the requirement.
In this embodiment, the filler layer 3 comprises a plurality of superimposed screens, enabling the atomized absorption liquid to absorb malodorous components in the intake air and to pool into droplets.
Specifically, the porosity of the filler layer 3 is ensured by a plurality of layers of screens.
Further, the screen is made of corrosion-resistant materials.
In this embodiment, further comprising:
the overhaul port 11 is arranged at the top of the storage tank 1, the upper wall in the storage tank 1 is provided with a baffle plate 13 for isolating the overhaul port 11 from the demister 8 and the reactor 2, and the lower end of the baffle plate 13 is positioned below the liquid level of the absorption liquid;
a plurality of installing ports 12 are arranged at the top of the storage tank 1 and are positioned at the side of the access port 11 away from the demister 8 and the reactor 2, the inner bottom wall of the storage tank 1 is provided with an upward filter plate 14, and the filter plate 14 is positioned at one side of the partition 13 close to the access port 11.
Specifically, each functional component is installed through a plurality of installing ports 12, and residue carried in odor or after reaction with absorption liquid is avoided wearing and tearing, each functional component, instrument are covered through filter 14, and odor gas is avoided flowing through access port 11 or each installing port 12 to the baffle 13 to escape.
In this embodiment, the demister 8 is of a folded plate type or a packed type.
In this embodiment, there are a plurality of nozzle 5 arrays.
In this embodiment, the spray range of the nozzle 5 covers the filler layer 3.
In this embodiment, the number of deodorizers is plural, and the plurality of deodorizers are connected in sequence.
In this embodiment, the absorption liquids of the plurality of deodorizers are different.
Specifically, the odor containing different malodorous substances is treated by different absorption liquids.
In this embodiment, the nozzle 5 is an atomizing nozzle.
Specifically, the nozzle 5 sprays the atomized absorption liquid, and the absorption liquid after the odor impact atomization is fully contacted with the absorption liquid.
The utility model also provides an integrated high-efficiency chemical deodorization method, which comprises the following steps:
the integrated high-efficiency chemical deodorization system is utilized;
make up the dilution water in the storage tank 1, make the amount of dilution water meet the amount of circulating water;
supplementing the liquid medicine to the dilution water to form an absorption liquid, and circulating the absorption liquid until the concentration of the absorption liquid reaches the standard;
and (5) introducing odor to deodorize after circulating the absorption liquid with the concentration reaching the standard.
Specifically, when in use, firstly, the concentration of the absorption liquid is adjusted, the absorption liquid amount is ensured to be larger than the circulation amount of the circulating pump, and after the absorption liquid with the standard circulating concentration is stabilized, the odor is introduced for deodorization;
the liquid medicine and the dilution water can be externally supplemented in the running process of the system, and the dilution water can be tap water or reclaimed water reaching standards;
when the system stops running, firstly stopping introducing odor and then stopping absorbing liquid circulation;
wherein the absorption liquid is at least one of sulfuric acid, sodium hydroxide and sodium hypochlorite;
when ammonia and organic amine compounds are removed, a sulfuric acid aqueous solution is adopted, and the corresponding pH value range is 2-4;
when removing hydrogen sulfide and organic malodorous pollutants, the sodium hypochlorite aqueous solution is used alone or in combination with sodium hydroxide aqueous solution, the concentration (calculated by chlorine) of the sodium hypochlorite aqueous solution is 0.5-1g/L, and when the sodium hypochlorite aqueous solution is used in combination with the sodium hydroxide aqueous solution, the pH value range is 9-10.
During the running process of the equipment, the supplement or the periodic replacement of the absorption liquid is controlled according to an on-line instrument of the automatic control unit;
when ammonia and organic amine substances are removed by adopting sulfuric acid aqueous solution, the ammonium sulfate is replaced when the ammonium sulfate is more than 50 g/L;
when sodium hypochlorite is used or used in combination with sodium hydroxide, the displacement is performed when the sulfate is greater than 15 g/L; the rate of replacement by periodic replacement is at least 50%.
Example 1
The present embodiment provides an integrated high-efficiency chemical deodorization system, comprising: a reactor 2, a storage tank 1, a circulating pump (not shown), a demister 8, an automatic control unit (not shown);
the upper flange of the reducer pipe is connected with an air inlet pipe 9, the lower flange is connected with the reactor 2, and the lower flange is provided with a nozzle 5 and an external connecting pipe 4; the exposed end of the external connecting pipe 4 is connected with a circulating liquid inlet pipe 6 and a dosing pipe 7; the circulating liquid inlet pipe 6 is connected with the outlet of the circulating pump; the dosing pipe 7 is connected with an external dosing pump pipeline;
the reactor 2, the overall height of which is 0.8m, mainly comprises: a nozzle 5 and a filler layer 3; a support ring; the packing layers 3 are multiple packing layers, each packing layer is arranged at intervals, and the supporting rings are used for supporting the intervals;
the packing layer 3 is 2 layers; each packing layer 3 is formed by pressing 10 layers of plane screens, the screen meshes are square, the side length is 5mm, and the void ratio of each packing layer is 99%; the support ring is used for supporting each packing layer 4.3, and the height dimension of the support ring is 20cm.
The number of the nozzles 5 is one; the median diameter of the spray liquid drop volume of the nozzle 5 is less than 500 mu m; 1000Nm per treatment 3 The amount of the gas and the spray liquid is 3m 3 ；
The circulating pump adopts an acid and alkali resistant in-tank vertical pump;
the reservoir 1 is provided with: an access opening 11 and a plurality of functional component mounting openings 12.
The demister 8 is a folded plate type, and the speed range of the empty tower is 1-4 m/s;
the automatic control unit is used for controlling the chain reaction of the system.
The volume of the absorption liquid in the storage tank 1 is the rated flow volume of the circulating pump for 5 min.
The integrated high-efficiency chemical deodorization system is used in series of 2 stages, and the method comprises the following steps:
the first stage is an acid washing process, malodorous gaseous pollutants such as ammonia, organic amine and the like are removed, sulfuric acid aqueous solution is adopted, the corresponding pH value control range is 2-4, in the deodorizing process, the supplement or the periodic replacement of the absorption liquid is controlled according to an on-line instrument of an automatic control unit, and when the ammonium sulfate is more than 50g/L, the replacement is carried out;
the second stage is alkaline washing oxidation process, hydrogen sulfide and organic gaseous pollutants are removed, sodium hypochlorite aqueous solution and sodium hydroxide aqueous solution are used in combination, the corresponding pH value control range is 9-10, and the concentration (calculated by chlorine) of the sodium hypochlorite aqueous solution control range is 0.5-1g/L. In the deodorizing process, the supplement or the periodic replacement of the absorption liquid is controlled according to an on-line instrument of the automatic control unit, and the replacement is carried out when the sulfate is more than 15 g/L.
The method comprises the following steps:
s1: replenishing the reservoir 1 with an appropriate volume of water; the water can be tap water or reclaimed water reaching the standard;
the volume of tap water or reclaimed water reaching the standard in the storage tank 1 is the rated flow volume of the circulating pump for 5 min;
replenishing the absorption liquid medicine to form the absorption liquid with proper concentration.
S2: starting a circulating pump; starting an external dosing pump and adding liquid medicine into the dosing pipe through a pipeline; determining the adding amount of the liquid medicine through on-line instrument data in the automatic control unit; stopping adding the liquid medicine and sending malodorous gas into the reactor 2 of the storage tank 1 through the air inlet pipe 9 and the reducing pipe for deodorization treatment when the adding amount of the liquid medicine reaches the preset concentration; the superficial flow rate of the gas in the reactor 2 was 3m/s. The medicine adding port 7 can be used for supplementing medicine liquid or absorption liquid according to the requirement;
s3: the gas after deodorization is discharged out of the system from the gas outlet pipe 8 after the entrained absorption liquid is recovered by the demister 8.
The level 2 series system of the embodiment is applied to malodorous gas collected in sludge dewatering rooms of municipal sewage treatment plants, the removal rate of hydrogen sulfide and ammonia in the level 2 series system of the embodiment is over 96.3 percent, the removal rate of methyl mercaptan and total non-methane hydrocarbon is over 86.8 percent, and various indexes including odor concentration and the like meet the national current emission limit of atmospheric pollutants of an exhaust stack.
Example 2
This embodiment provides a high-efficiency chemical deodorizing system, which differs from embodiment 1 only in that:
the height of the reactor 2 is 1m; 4 nozzles 5; the nozzle 5 handles 1000Nm per treatment 3 The amount of the gas and the spray liquid is 5m 3 ；
The packing layers 3 are 3 layers, each packing layer 3 is formed by pressing 5 layers of plane screens, the side length of each screen is 3mm, and the void ratio of each packing layer is 95%;
the height dimension of the supporting ring is 10cm;
the volume of the absorption liquid in the storage tank 4 is the rated flow volume of the circulating pump 4 min.
The high-efficiency chemical deodorizing system is used in 3 stages in series, and the difference between the embodiment and the embodiment 1 is that:
the first stage is an acid washing process, malodorous gaseous pollutants such as ammonia, organic amines and the like are removed, and a sulfuric acid aqueous solution is adopted, so that the corresponding pH value control range is 2-4;
the second stage is alkaline washing process to remove hydrogen sulfide and partial organic gaseous pollutants, and sodium hydroxide aqueous solution is adopted, and the corresponding pH value control range is 9-10;
the third stage is an oxidation process, residual hydrogen sulfide and organic gaseous pollutants are removed, and a sodium hypochlorite aqueous solution is adopted, wherein the concentration (calculated by chlorine) is controlled to be 0.5-1g/L;
the method comprises the following steps:
s1: replenishing the reservoir 1 with an appropriate volume of water; the water can be tap water or reclaimed water reaching the standard;
the volume of tap water or reclaimed water reaching the standard in the storage tank 1 is the rated flow volume of the circulating pump for 4 min;
replenishing the absorption liquid medicine to form the absorption liquid with proper concentration.
S2: starting a circulating pump; starting an external dosing pump and adding a liquid medicine into the dosing pipe through a pipeline; determining the adding amount of the liquid medicine through on-line instrument data in the automatic control unit; stopping adding the liquid medicine and sending malodorous gas into the upper reactor 2 of the storage tank 1 through the air inlet pipe 9 and the reducing pipe for deodorization treatment when the adding amount of the liquid medicine reaches a preset concentration; the superficial flow rate of the gas in the reactor 2 was 2.5m/s. The medicine adding pipe 7 can supplement absorption liquid or liquid medicine according to the requirement;
s3: the gas after deodorization is discharged out of the system from the gas outlet pipe 8 after the entrained absorption liquid is recovered by the demister 8.
The level 3 series system of the embodiment is applied to malodorous gas collected in sludge dewatering rooms of municipal sewage treatment plants, the removal rate of hydrogen sulfide and ammonia in the level 3 series system of the embodiment is over 98.6%, the removal rate of methyl mercaptan and total non-methane hydrocarbon is over 88.3%, and various indexes including odor concentration and the like meet the national current emission limit of atmospheric pollutants of an exhaust stack.
Example 3
The present embodiment provides an integrated efficient chemical deodorizing system, and the difference between the present embodiment and embodiment 1 is that:
the height of the reactor 2 is 1.2m; 1 nozzle 5; the nozzle 5 handles 1000Nm per treatment 3 The gas and spray liquid amounts to 1m 3 ；
The packing layers 3 are 4 layers, each packing layer 3 is formed by pressing 2 layers of plane screens, the side length of each screen is 0.5mm, and the void ratio of each packing layer is 92%;
the height dimension of the supporting ring is 5cm;
the integrated high-efficiency chemical deodorizing system is used in series of 4 stages, and the difference between the embodiment and the embodiment 1 is that:
the first stage is an acid washing process, malodorous gaseous pollutants such as ammonia, organic amines and the like are removed, and a sulfuric acid aqueous solution is adopted, so that the corresponding pH value control range is 2-4;
the second stage is an acid washing process, so that malodorous gaseous pollutants such as ammonia, organic amines and the like are removed, and a sulfuric acid aqueous solution is adopted, wherein the corresponding pH value control range is 2-4;
the third stage is alkaline washing process to remove hydrogen sulfide and partial organic gaseous pollutants, and sodium hydroxide aqueous solution is adopted, and the corresponding pH value control range is 9-10;
the fourth stage is an oxidation process, residual hydrogen sulfide and organic gaseous pollutants are removed, and a sodium hypochlorite aqueous solution is adopted, wherein the concentration (calculated by chlorine) is controlled to be 0.5-1g/L;
the method comprises the following steps:
s1: replenishing the reservoir 1 with an appropriate volume of water; the water can be tap water or reclaimed water reaching the standard;
the volume of tap water or reclaimed water reaching the standard in the storage tank 1 is the rated flow volume of the circulating pump for 6 min;
replenishing the absorption liquid medicine to form the absorption liquid with proper concentration.
S2: starting a circulating pump; starting an external dosing pump and adding a liquid medicine into the dosing pipe through a pipeline; determining the adding amount of the liquid medicine through on-line instrument data in the automatic control unit; stopping adding the liquid medicine and sending malodorous gas into the upper reactor 2 of the storage tank 1 through the air inlet pipe 9 and the reducing pipe for deodorization treatment when the adding amount of the liquid medicine reaches a preset concentration; the superficial flow rate of the gas in the reactor 2 was 1m/s. The medicine adding pipe 7 can supplement absorption liquid or liquid medicine according to the requirement;
s3: the gas after deodorization is discharged out of the system from the gas outlet pipe 8 after the entrained absorption liquid is recovered by the demister 8.
The level 4 series system of the embodiment is applied to malodorous gas collected in sludge dewatering rooms of municipal sewage treatment plants, the removal rate of hydrogen sulfide and ammonia in the level 4 series system of the embodiment is over 97.8%, the removal rate of methyl mercaptan and total non-methane hydrocarbon is over 87.2%, and various indexes including odor concentration and the like meet the national current emission limit of atmospheric pollutants of an exhaust stack.
Example 4
The present embodiment provides an integrated efficient chemical deodorizing system, and the difference between the present embodiment and embodiment 1 is that:
the height of the reactor 2 is 1m; 3 nozzles 5; the nozzle 5 handles 1000Nm per treatment 3 The amount of the gas and the spray liquid is 3m 3 ；
The packing layers 3 are 3 layers, each packing layer 3 is formed by pressing 8 layers of plane screens, the side length of each screen is 4mm, and the void ratio of each packing layer is 98%;
the height dimension of the supporting ring is 10cm;
the integrated high-efficiency chemical deodorizing system is used in a single stage, and the difference between the embodiment and the embodiment 1 is that:
the single stage is an alkaline washing oxidation process, hydrogen sulfide and organic gaseous pollutants are removed, a sodium hypochlorite aqueous solution and a sodium hydroxide aqueous solution are used in a combined way, the corresponding pH value control range is 9-10, and the concentration (calculated by chlorine) of the sodium hypochlorite aqueous solution control range is 0.5-1g/L;
the method comprises the following steps:
s1: replenishing the reservoir 1 with an appropriate volume of water; the water can be tap water or reclaimed water reaching the standard;
the volume of tap water or reclaimed water reaching the standard in the storage tank 1 is the rated flow volume of the circulating pump for 6 min;
replenishing the absorption liquid medicine to form the absorption liquid with proper concentration.
S2: starting a circulating pump; starting an external dosing pump and adding a liquid medicine into the dosing pipe through a pipeline; determining the adding amount of the liquid medicine through on-line instrument data in the automatic control unit; stopping adding the liquid medicine and sending malodorous gas into the upper reactor 2 of the storage tank 1 through the air inlet pipe 9 and the reducing pipe for deodorization treatment when the adding amount of the liquid medicine reaches a preset concentration; the superficial flow rate of the gas in the reactor 2 was 5m/s. The medicine adding pipe 7 can supplement the absorption liquid according to the requirement;
s3: the gas after deodorization is discharged out of the system from the gas outlet pipe 8 after the entrained absorption liquid is recovered by the demister 8.
The single-stage system of the embodiment is applied to malodorous gas collected in a pretreatment section of a municipal sewage treatment plant, and the advanced treatment is carried out on the malodorous gas after biological deodorization by adopting the single-stage serial system of the embodiment. After the advanced treatment of the single-stage system of the embodiment, the removal rate of hydrogen sulfide is over 93.8 percent, the removal rates of methyl mercaptan and non-methane total hydrocarbon are over 83.1 percent, and various indexes including odor concentration and the like meet the national current emission limiting value of atmospheric pollutants of an exhaust stack.
The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (10)
1. An integrated high efficiency chemical deodorizing system comprising at least one deodorizer, said deodorizer comprising:
a reservoir for storing an absorption liquid;
one end of the reactor is connected with the air inlet pipe through a reducing pipe, and the other end of the reactor is connected with the storage tank;
the packing layers are arranged in the reactor at intervals and positioned below the nozzles, and support rings are arranged between the adjacent packing layers;
one end of the external connecting pipe is connected with a nozzle positioned in the reactor, and the other end of the external connecting pipe is connected with a circulating liquid inlet pipe and a dosing pipe;
one end of the demister is connected with the storage tank, and the other end of the demister is connected with the air outlet pipe through a reducing pipe;
the two ends of the circulating pump are respectively connected with the circulating liquid inlet pipe and the storage tank;
the odor is discharged after passing through the reactor, the storage tank and the demister.
2. The integrated high-efficiency chemical deodorization system according to claim 1, further comprising:
a concentration detection unit for detecting the concentration of the absorption liquid;
the liquid level detection unit is used for detecting the storage quantity of the absorption liquid in the storage tank;
the two ends of the first electric valve are respectively connected with the storage tank and the water inlet pipe;
the two ends of the second electric valve are respectively connected with the dosing pipe and the storage tank;
and the automatic control unit is used for controlling the opening and closing of the first electric valve and the second electric valve according to the concentration detection unit and the liquid level detection unit.
3. The integrated high efficiency chemical deodorizing system of claim 1, wherein said filler layer comprises a plurality of superimposed screens enabling atomized absorption liquid to absorb malodorous components in the intake air and to pool into droplets.
4. The integrated high-efficiency chemical deodorization system according to claim 1, further comprising:
the upper wall in the storage tank is provided with a baffle plate for isolating the access hole from the demister and the reactor, and the lower end of the baffle plate is positioned below the liquid level of the absorption liquid;
the storage tank is provided with a plurality of mounting openings, the storage tank is provided with a plurality of filter plates, the mounting openings are arranged at the top of the storage tank and are positioned at the sides of the overhauling openings, the demister and the reactor are far away from each other, the bottom wall in the storage tank is provided with the upward filter plates, and the filter plates are positioned at one side, close to the overhauling openings, of the partition plates.
5. The integrated high efficiency chemical deodorizing system of claim 1, wherein said mist eliminator is of the folded plate type or the packed type.
6. The integrated high-efficiency chemical deodorizing system according to claim 1, wherein said nozzle array has a plurality of nozzles.
7. The integrated high efficiency chemical deodorizing system of claim 1, wherein the spray area of said nozzle covers said filler layer.
8. The integrated high-efficiency chemical deodorizing system according to claim 1, wherein the number of said deodorizers is plural, and the plural said deodorizers are connected in sequence.
9. The integrated high-efficiency chemical deodorizing system according to claim 8, wherein the absorbing liquid of a plurality of said deodorizers is different.
10. The integrated high efficiency chemical deodorizing system of claim 1, wherein said nozzle is an atomizing nozzle.
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| CN202321052091.4U CN220276656U (en) | 2023-05-05 | 2023-05-05 | Integrated efficient chemical deodorization system |
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| CN202321052091.4U CN220276656U (en) | 2023-05-05 | 2023-05-05 | Integrated efficient chemical deodorization system |
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