CN117358054B - Waste gas biological treatment device based on high acid-resistant desulfurization strain - Google Patents
Waste gas biological treatment device based on high acid-resistant desulfurization strain Download PDFInfo
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- CN117358054B CN117358054B CN202311594263.5A CN202311594263A CN117358054B CN 117358054 B CN117358054 B CN 117358054B CN 202311594263 A CN202311594263 A CN 202311594263A CN 117358054 B CN117358054 B CN 117358054B
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- 239000002253 acid Substances 0.000 title claims abstract description 74
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 72
- 230000023556 desulfurization Effects 0.000 title claims abstract description 72
- 239000002912 waste gas Substances 0.000 title claims abstract description 16
- 238000005273 aeration Methods 0.000 claims abstract description 100
- 239000007788 liquid Substances 0.000 claims abstract description 81
- 239000007921 spray Substances 0.000 claims abstract description 79
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 239000011259 mixed solution Substances 0.000 claims abstract description 26
- 241000894006 Bacteria Species 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 29
- 230000000670 limiting effect Effects 0.000 claims description 26
- 238000011084 recovery Methods 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 17
- 230000002441 reversible effect Effects 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 10
- 238000005276 aerator Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000000644 propagated effect Effects 0.000 abstract description 2
- 230000001580 bacterial effect Effects 0.000 description 19
- 241000233866 Fungi Species 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 241000186361 Actinobacteria <class> Species 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000194108 Bacillus licheniformis Species 0.000 description 1
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- 241000186605 Lactobacillus paracasei Species 0.000 description 1
- 240000006024 Lactobacillus plantarum Species 0.000 description 1
- 235000013965 Lactobacillus plantarum Nutrition 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 235000014680 Saccharomyces cerevisiae Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229940072205 lactobacillus plantarum Drugs 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 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
- B01D53/84—Biological processes
-
- 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
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
-
- 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
- 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
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
-
- 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
-
- 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
- B01D2258/0266—Other waste gases from animal farms
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a waste gas biological treatment device based on a high acid-resistant desulfurization strain, and relates to the technical field of waste gas treatment. The waste gas biological treatment device based on the high acid-resistant desulfurization strain comprises an outer tower and further comprises: the spray tower is positioned in the outer tower, and a spacing space is formed between the spray tower and the outer tower and is used for accommodating the mixed solution of the high acid-resistant desulfurization strain; the heating wire is arranged on the spray tower to provide the required temperature for the outer tower and the interval space; and the aeration mechanism is used for aerating the high acid-resistant desulfurization strain in the interval space. According to the invention, the outer tower is arranged outside the spray tower, and the recovered spray bacteria liquid is temporarily stored in the interval space between the spray tower and the outer tower, so that the heating wire with proper temperature is provided in the spray tower, and the spray bacteria liquid temporarily stored in the interval space can be provided with the required temperature, so that the bacteria in the whole circulation can be propagated at the required proper temperature, and the waste gas treatment efficiency is improved.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a waste gas biological treatment device based on high acid-resistant desulfurization strains.
Background
In industry, malodorous gases such as hydrogen sulfide generated by a cultivation factory, a composting factory, a garbage treatment factory and a sewage treatment factory pollute the environment and cause damages such as equipment corrosion, and the generated gases generally have the characteristics of large quantity, low concentration and the like, wherein the hydrogen sulfide is an important component in the malodorous gases and can cause relatively large damages to human bodies and equipment.
In the prior art, as proposed in the patent publication CN111686567a, a deodorizing and desulfurizing device and a deodorizing and desulfurizing flora culture are provided, bacterial liquid sprayed from a spray tower is directly aerated and cultured in a bacterial liquid tank below, but in fact, a proper temperature is required for breeding the bacterial liquid, and the above equipment cannot reach the proper temperature for culturing and spraying bacteria.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a waste gas biological treatment device based on high acid-resistant desulfurization strains, which solves the problem of providing proper temperature for cultured and sprayed bacteria.
In order to achieve the above purpose, the invention is realized by the following technical scheme: waste gas biological treatment device based on high acid-resistant desulfurization strain, including outer tower, still include: the spray tower is positioned in the outer tower, and a spacing space is formed between the spray tower and the outer tower and is used for accommodating the mixed solution of the high acid-resistant desulfurization strain; the heating wire is arranged on the spray tower to provide the required temperature for the outer tower and the interval space; the aeration mechanism is arranged on one side of the outer tower and is used for aerating the high acid-resistant desulfurization strain in the interval space.
Further, the aeration mechanism comprises a plurality of branch pipes which are arranged side by side up and down, one end of each branch pipe is positioned in the interval space, one end of each branch pipe positioned in the interval space is provided with a flexible air inlet structure, and the other end of each flexible air inlet structure is provided with an aeration main body; the aeration main body comprises a shell, one side of the shell is provided with an aeration hole, and air flow sprayed out of the aeration hole can generate a reverse thrust force on the aeration main body, and the reverse thrust force enables the aeration main body to swing; and a lifting rope is arranged between the flexible air inlet structure and the branch pipe.
Further, an inner cylinder is arranged in the middle of the inside of the aeration hole and is used for receiving gas entering the inside of the shell from the flexible air inlet structure; the two sides of the inner wall of the shell are provided with baffles along the diameter direction of the inner cylinder, the baffles and the inner cylinder divide the inner space of the shell into a first space and a second space, and the positions of the two sides of the shell corresponding to the first space and the second space are provided with aeration holes; an air port is arranged on one side of the inner cylinder, which is close to the second space, and is used for spraying out the gas in the inner cylinder through an aeration hole; a fan blade is arranged in the air port, one end of the inner cylinder, which is far away from the flexible air inlet structure, is rotatably arranged in the shell through a central shaft, and air flow passing through the fan blade can drive the inner cylinder to rotate by taking the central shaft as a circle center so that the air port is alternately positioned in the first space and the second space; one side of the partition plate, which is close to the inner cylinder, is fixed with a minor arc limiting plate, and the inner cambered surface of the minor arc limiting plate is used for limiting the rotation of the inner cylinder.
Further, the flexible air inlet structure comprises a second air inlet pipe, a first air inlet pipe, a valve core and a connecting hose, wherein the second air inlet pipe is fixed on the shell and communicated with the inner barrel; the valve core comprises an L-shaped valve plate, the L-shaped valve plate comprises a first plate and a second plate, the first plate seals a channel in the second air inlet pipe, and the second plate is fit on the arc-shaped inner wall of one side, far away from the first air inlet pipe, of the second air inlet pipe; a spring is fixedly arranged on one side of the first plate, which is close to the inner cylinder, a spring seat is fixed between the other end of the spring and the second air inlet pipe, an L-shaped valve plate is positioned between the first air inlet pipe and the shell in a natural state of the spring, a limiting block is arranged on the inner wall of the second air inlet pipe and used for limiting the first plate to move towards the direction of the inner cylinder, and the L-shaped valve plate can be pushed when the shell is filled with mixed liquid of high acid-resistant desulfurization strains; one surface of the first plate, which is close to the spring, is provided as an inclined surface.
Further, the aeration mechanism further comprises an aeration machine, a main air inlet pipe is fixed at an exhaust port of the aeration machine, and one end of the branch pipe, which is far away from the outer tower, is fixedly communicated with the main air inlet pipe.
Further, an introduction mechanism is arranged at the bottom of the spray tower; the guiding mechanism comprises a filter box arranged below the spray tower, a liquid discharging pipe connected with the filter box and the spray tower, a guiding pump for pumping out liquid of the filter box, and a guiding pipe connected with a liquid outlet of the guiding pump and an interval space.
Further, a spray assembly is arranged in the spray tower, an overflow port is formed in one side of the top of the outer tower, and a bacterial liquid reflux mechanism is arranged between the overflow port and the spray assembly; the fungus liquid reflux mechanism comprises a recovery pump arranged on one side of the spray tower, an overflow pipe fixed between a liquid inlet and an overflow port of the recovery pump and a recovery pipe arranged between a liquid outlet of the recovery pump and the spray assembly.
Further, the spray assembly comprises annular pipes which are arranged in the spray tower side by side up and down, nozzles are uniformly arranged on the lower surface of the annular pipes, liquid supporting pipes are fixedly arranged on one side of the annular pipes, and main liquid pipes are fixedly arranged between the liquid supporting pipes; the main liquid pipe is fixedly communicated with the recovery pipe.
Further, one side of the spray tower is provided with a biological filter tower, the upper end of the spray tower is fixedly communicated with the lower end of the biological filter tower through a connecting pipe, and an exhaust chimney is arranged at the upper end of the biological filter tower.
Further, a turbulence structure is arranged in the interval space.
The invention has the following beneficial effects:
(1) This waste gas biological treatment device based on high acid-resistant desulfurization strain is through setting up outer tower in the outside of spray column, with the spray fungus liquid of retrieving temporarily store in the interval space between outer tower of spray column to provide the heater strip of suitable temperature in the spray column and can also provide required temperature to the spray fungus liquid of temporarily storing in the interval space, make the fungus liquid fungus of whole circulation reproduce at required suitable temperature, improve fungus liquid decomposition efficiency, thereby improve waste gas treatment's efficiency.
(2) This waste gas biological treatment device based on high acid-resistant desulfurization strain makes the aeration main body can receive the reverse thrust of blowout air current through setting up the aeration main body that unilateral sprayed paint in the same time quantum to make the aeration main body can do swing motion along the lifting rope, enlarge the travel path of aeration main body, thereby improve aeration efficiency, improve the propagation efficiency of strain.
(3) This waste gas biological treatment device based on high acid-resistant desulfurization strain through rotating the installation inner tube in the shell of aeration main part to install the fan in inner tube open position, thereby make the air current accessible fan drive inner tube of entering inner tube rotatory, make the air current can be in the aeration of shell both sides in turn, avoid aeration main part winding lifting rope and coupling hose.
(4) This waste gas biological treatment device based on high acid-resistant desulfurization bacterial strain can make only when the fungus liquid reaches the high of aeration main part through setting up L shape valve plate and aerate, breeds when the fungus liquid highly is less than the aeration main part, and the air supply main part self-closing can not aerate.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
Fig. 1 is an external view of the present invention.
FIG. 2 is a schematic view of the internal structure of the outer column of the present invention.
Fig. 3 is an enlarged view of area a of fig. 2 in accordance with the present invention.
Fig. 4 is a longitudinal sectional view of the aeration main body of the present invention.
Fig. 5 is a transverse sectional view of the aeration main body of the present invention.
Fig. 6 is an exploded view of fig. 5 in accordance with the present invention.
Fig. 7 is another view of fig. 1 according to the present invention.
Fig. 8 is a schematic view showing the internal structure of the spray tower of the present invention.
Fig. 9 is an enlarged view of region B of fig. 8 in accordance with the present invention.
110, an outer tower; 120. a turbulence structure; 130. a spray tower; 131. a grommet; 132. a nozzle; 133. a liquid supporting pipe; 134. a main liquid pipe; 200. an aeration mechanism; 210. an aerator; 220. a main air inlet pipe; 230. a flexible air intake structure; 231. an air intake hose; 233. a second air inlet pipe; 234. a first air inlet pipe; 235. a spring; 236. a spring seat; 237. a limiting block; 238. an L-shaped valve plate; 240. an aeration main body; 241. a housing; 242. aeration holes; 243. an inner cylinder; 244. inferior arc limiting plates; 245. a center shaft; 246. a fan blade; 247. a partition plate; 248. a baffle; 250. a branch pipe; 260. a hanging rope; 300. a bacterial liquid reflux mechanism; 310. a recovery pump; 320. a recovery pipe; 330. an overflow pipe; 400. a heating wire; 500. an introduction mechanism; 510. an introduction pump; 520. a filter box; 530. a liquid discharging pipe; 540. an ingress pipe; 600. an exhaust gas intake pipe; 700. a connecting pipe; 800. an exhaust chimney; 900. a biological filtration tower.
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.
In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1 and 2, the embodiment of the present invention provides the following technical solutions: an exhaust gas biological treatment device based on high acid-resistant desulfurization strains, comprising an outer tower 110, further comprising: a spray tower 130 as a place where microorganisms treat exhaust gas (the bottom of one side of the spray tower 130 should be provided with an exhaust gas inlet pipe 600, exhaust gas entering from the exhaust gas inlet pipe 600 can flow from bottom to top), the spray tower 130 is located inside the outer tower 110, and a space is formed between the spray tower 130 and the outer tower 110, the space is used for containing high acid-resistant desulfurization strain mixed liquor, that is, the periphery of the spray tower 130 is provided with high acid-resistant desulfurization strain mixed liquor; the heating wire 400 is arranged on the spray tower 130 to provide the required temperature for the outer tower 110 and the interval space, so that the mixed solution of the high acid-resistant desulfurization strains stored in the interval space and the mixed solution of the high acid-resistant desulfurization strains sprayed in the spray tower 130 can be synchronously controlled in temperature only by adding a set of temperature control system, and after the synchronous temperature control is carried out to the required temperature, the high acid-resistant desulfurization strains in two states (namely, the first high acid-resistant desulfurization strain stored in the interval space and the second high acid-resistant desulfurization strain mixed solution in the spray state in the spray tower 130) can be rapidly cultivated.
The high acid resistance desulfurization strain comprises nitrifying bacteria, actinomycetes, filamentous bacteria, photosynthetic bacteria, lactobacillus plantarum, bacillus subtilis, saccharomyces cerevisiae, lactobacillus paracasei and bacillus licheniformis.
With continued reference to fig. 1 and 2, in order to achieve that the mixed solution of the high acid-resistant desulfurization strains stored in the space can be contacted with oxygen to provide a better propagation environment, an aeration mechanism 200 is further provided, wherein the aeration mechanism 200 is arranged at one side of the outer tower 110, and the aeration mechanism 200 is used for aerating the high acid-resistant desulfurization strains in the space, so that the propagation of the high acid-resistant desulfurization strains is ensured to be rapid.
As shown in fig. 2 and 3, the above-mentioned aeration mechanism 200 includes a plurality of branch pipes 250 arranged side by side up and down, one end of each branch pipe 250 is located in the space, one end of each branch pipe 250 located in the space is provided with a flexible air inlet structure 230, the other end of each flexible air inlet structure 230 is provided with an aeration main body 240, the branch pipes 250 are used for air inlet from the outer ends, air flow can reach the aeration main bodies 240 through the flexible air inlet structures 230, and the aeration main bodies 240 are located in the space, so that the air sprayed from the aeration main bodies 240 can aerate the mixed liquid of the high acid-resistant desulfurization strains in the space; preferably, the aeration main body 240 comprises a shell 241, and an aeration hole 242 is arranged on one side of the shell 241, so that the aeration main body 240 can exhaust from one side, the exhausted air flow can reach into the mixed solution of the high acid-resistant desulfurization bacterial strain to aerate the bacterial strain, and the one side exhaust has the advantage that the gas sprayed from the one side aeration hole 242 can generate a part of reverse thrust to the aeration main body 240, so that the aeration main body 240 can swing along the flexible air inlet structure 230, the occupied area of a moving path of the aeration main body 240 is enlarged, and the aeration main body 240 can effectively improve the aeration efficiency in swinging; preferably, a lifting rope 260 is arranged between the flexible air inlet structure 230 and the branch pipe 250, so that the aeration main body 240 is lifted on the branch pipe 250 by the lifting rope 260, the stress of the flexible air inlet structure 230 is reduced, and the service life of the flexible air inlet structure 230 is prolonged.
In this embodiment, as shown in fig. 3, since the branch pipe 250 is inserted into the outer tower 110, the outer tower 110 should be provided with a mounting hole for the branch pipe 250, and a sealing member is provided between the mounting hole and the branch pipe 250, wherein the mounting hole is preferably a protruding mounting hole protruding from the surface of the outer tower 110, so that the contact area between the mounting hole and the branch pipe 250 is increased, the volume of the sealing member is increased, and the sealing effect is improved, and the sealing member is preferably an acid-resistant rubber sealing ring.
In addition, the aeration main body 240 is preferably made of acid-resistant polypropylene, because polypropylene has a light weight and can be subjected to a large liquid buoyancy, and after reaching the inside of the mixed solution of the high acid-resistant desulfurization strains, the reverse thrust of the gas ejected from the aeration holes 242 is small, so that the swing of the aluminum alloy shell 241 can be realized.
As shown in fig. 3 to 6, since the reaction force of the gas ejected from the single-side aeration holes 242 to the housing 241 is single in the above-described scheme, in order to avoid the situation that the flexible gas inlet structure 230 is wound and dead-tied in a single direction due to the single reaction force, an inner cylinder 243 is provided in the middle of the inside of the aeration holes 242, and the inner cylinder 243 is used for receiving the gas entering the inside of the housing 241 from the flexible gas inlet structure 230; the baffle 248 is arranged on two sides of the inner wall of the shell 241 along the diameter direction of the inner cylinder 243, the baffle 248 and the inner cylinder 243 divide the inner space of the shell 241 into a first space and a second space, the positions of the two sides of the shell 241 corresponding to the first space and the second space are respectively provided with an aeration hole 242, one side of the inner cylinder 243 close to the second space is provided with an air port, the air port is used for spraying air in the inner cylinder 243 through the aeration holes 242, namely when the air port is aligned with the first space, the aeration holes 242 corresponding to the first space can be used for spraying air, otherwise when the air port is aligned with the second space, the aeration holes 242 corresponding to the second space can be used for spraying air, so that the aeration holes 242 on two sides can be used for alternately spraying air, the reverse thrust direction borne by the shell 241 can be alternately changed under the condition of alternately spraying air, the flexible air inlet structure 230 can be automatically reversed after winding, and the condition of winding dead knots of the flexible air inlet structure 230 caused by single reverse thrust can be avoided.
3-6, in order to realize the alternate operation of the aeration holes 242 on the two sides, the fan blades 246 are disposed in the air opening, one end of the inner cylinder 243 far away from the flexible air inlet structure 230 is rotatably mounted in the outer shell 241 through the central shaft 245, when the air flow in the inner cylinder 243 passes through the air opening, the fan blades in the inner cylinder can generate tangential thrust to the inner cylinder 243 due to the thrust of the air flow, so that the inner cylinder 243 can perform rotational movement by taking the central shaft 245 as the center of a circle, and the air openings on the inner cylinder 243 can be alternately located in the first space and the second space, so that alternate air injection of the aeration holes 242 on the two sides is realized.
In addition, in order to ensure the stability of the inner cylinder 243 during rotation, a minor arc limiting plate 244 is fixed on one side of the partition plate 247, which is close to the inner cylinder 243, the minor arc limiting plate 244 increases the contact area between the inner cylinder 243 and the baffle 248, the inner arc surface of the minor arc limiting plate 244 is used for limiting the rotation of the inner cylinder 243, the rotation stability of the inner cylinder 243 is ensured, and balls can be arranged on the inner arc surface of the minor arc limiting plate 244 so as to reduce the friction between the inner cylinder 243 and the minor arc limiting plate 244.
As shown in fig. 3 and 4, since the mixed solution of the high acid-resistant desulfurization strains in the space is not necessarily in a full state, that is, the aeration main body 240 higher in the space may be in a emptied state, that is, the bacteria liquid level cannot reach the level of the aeration main body 240 above, it is preferable that the aeration main body 240 above is not in an aerated state at this time, and in order to achieve this, the flexible air intake structure 230 includes the second air intake pipe 233 fixed to the housing 241 and communicating with the inner cylinder 243, the first air intake pipe 234 installed at the cambered side of the second air intake pipe 233, the valve core located in the second air intake pipe 233, and the connection hose 231 connecting the second air intake pipe 233 and the branch pipe 250, that is, when the valve core is opened, the air flow in the branch pipe 250 can be introduced into the inner cylinder 243 through the connection hose 231, the first air intake pipe 234 and the second air intake pipe 233, whereas when the valve core is closed, the air flow cannot reach the inner cylinder 243.
With continued reference to fig. 3 and 4, for the purpose of automatically opening the valve core when a certain aeration body 240 is located in the mixed solution of high acid-resistant desulfurization strains, and automatically closing the valve core when a certain aeration body 240 is not located in the mixed solution of high acid-resistant desulfurization strains, the valve core includes an L-shaped valve plate 238, the L-shaped valve plate 238 is located in the second air intake pipe 233, and the L-shaped valve plate 238 includes a first plate and a second plate, the first plate seals the inner passage of the second air intake pipe 233, and the second plate is fitted on the arc-shaped inner wall of the side of the second air intake pipe 233 away from the first air intake pipe 234; a spring 235 is fixedly arranged on one side of the first plate, which is close to the inner cylinder 243, a spring seat 236 is fixedly arranged between the other end of the spring 235 and the second air inlet pipe 233, the L-shaped valve plate 238 is located between the first air inlet pipe 234 and the inner cylinder 243 in a natural state of the spring 235, so that the first air inlet pipe 234 and the inner cylinder 243 are isolated, a limiting block 237 is arranged on the inner wall of the second air inlet pipe 233, the limiting block 237 is used for limiting the movement of the first plate towards the inner cylinder 243, namely, when the liquid level of mixed liquid of a high acid-resistant desulfurization strain does not reach the height of a certain aeration main body 240, the air flow of the branch pipe 250 wants to enter the inner cylinder 243 through the second air inlet pipe 233, the first plate is pushed, the air in the branch pipe 250 is prevented from entering the inner cylinder 243, otherwise, when the liquid level of the high acid-resistant desulfurization strain mixed liquid reaches the outer shell 241 through the aeration holes 242, the high acid-resistant desulfurization strain 238 can give thrust to the L-shaped valve plate 238, the L-shaped inner cylinder valve plate 238 can move towards the direction far away from the inner cylinder 243, the air inlet pipe 243 is stretched, and the spring 242 can be opened, and all the air flow can be blown out of the inner cylinder 243 through the first air inlet pipe 233, and the air inlet pipe 242 can be opened, and all the air inlet valve plate 242 can be opened, and all the air can be opened from the aeration main body 240, can be opened, and the air inlet valve plate can be opened, and the air valve can and the air can be opened.
Second, because the first air inlet pipe 234 is located at the cambered surface side of the second air inlet pipe 233, during the movement of the L-shaped valve plate 238 in the direction away from the inner cylinder 243, the air flow entering the first air inlet pipe 234 does not generate thrust to the first plate in the direction towards the inner cylinder 243, and further, the L-shaped valve plate 238 can continuously move to the position farthest from the inner cylinder 243 in the second air inlet pipe 233, during the process, the air entering the first air inlet pipe 234 can also generate thrust to the second plate, and due to the thrust, the whole L-shaped valve plate 238 can be stably located at the position farthest from the inner cylinder 243 in the second air inlet pipe 233, so that the air circulation of the air in the second air inlet pipe 233 is satisfied, preferably, one surface of the first plate close to the spring 235 is provided with an inclined surface, the winded area of the first plate 234 in the process of gradually separating from the inner cylinder 243 is reduced, and due to the action of the inclined surface, the air entering the first air inlet pipe 234 can provide a forward buoyancy to the movement of the first plate, and further ensure that the movement direction of the L-shaped valve plate 238 is convenient for automatic opening of the valve core when the liquid level arrives.
Moreover, when aeration is not performed any more, the L-shaped valve plate 238 can reach the position of the limiting block 237 again due to the rebound of the spring 235 due to the loss of the thrust and the buoyancy of the air flow, so that the valve core can be automatically closed when aeration is not performed.
Referring to fig. 1, 2 and 7, in particular, the aeration mechanism 200 further includes an aerator 210, an air outlet of the aerator 210 is fixed with a main air inlet pipe 220, and one end of a branch pipe 250, which is far from the outer tower 110, is fixedly connected to the main air inlet pipe 220, so that when the aerator 210 operates, it can absorb external air through its air inlet portion, reaches into the main air inlet pipe 220 through its air outlet portion, and enters into the aeration main body 240 through the branch pipe 250 and the flexible air inlet structure 230.
With continued reference to fig. 1, 5 and 7, in order to recover the spray liquid (i.e., the mixed liquid of the high acid-resistant desulfurization strains) used in the spray tower 130 into the space, an introduction mechanism 500 is installed at the bottom of the spray tower 130, preferably the introduction mechanism 500 includes a filter tank 520 provided below the spray tower 130, a downcomer 530 connecting the filter tank 520 with the spray tower 130, an introduction pump 510 for pumping out the liquid of the filter tank 520, and an introduction pipe 540 connecting a liquid outlet of the introduction pump 510 with the space, i.e., the spray liquid reaches the downcomer 530 downward due to gravity, and reaches the filter tank 520 to be filtered by a filter screen therein, the liquid after filtering impurities can be introduced into the space through the introduction pump 510, and the liquid (i.e., the mixed liquid of the high acid-resistant desulfurization strains) in the space can reach a desired temperature and be aerated for the space, whereas the speed is greatly increased.
The filter box is provided with the filter screen in the box body, the filter screen can filter impurities, and the filter box is preferably arranged to be detachable, so that the filter screen in the box body can be cleaned conveniently.
Referring to fig. 8, in order to enable spraying in the spray tower 130, a spray assembly is provided in the spray tower 130, an overflow port is provided on one side of the top of the outer tower 110, and a bacteria liquid reflux mechanism 300 is provided between the overflow port and the spray assembly, that is, when the high acid-resistant desulfurization strain mixed liquid recovered from the spray assembly in the space reaches the height of the overflow port during use, the bacteria liquid reflux mechanism 300 can be reached through the overflow port, and the bacteria liquid reflux mechanism 300 reintroduces the high acid-resistant desulfurization strain mixed liquid into the spray assembly for use.
As shown in fig. 7, the above-mentioned bacteria liquid reflux mechanism 300 includes a recovery pump 310 disposed at one side of the spray tower 130, an overflow pipe 330 fixed between the liquid inlet and the overflow port of the recovery pump 310, and a recovery pipe 320 disposed between the liquid outlet of the recovery pump 310 and the spray assembly, i.e. when the recovery pump 310 works, it can pump the bacteria liquid discharged from the overflow port into the spray assembly through the recovery pipe 320 for re-spraying.
In this embodiment, in fact, the spraying assembly should be further connected to an external high acid-resistant desulfurization strain mixed solution tank, which can provide the spraying assembly with the high acid-resistant desulfurization strain mixed solution in an initial state, and as the high acid-resistant desulfurization strain mixed solution provided by the spraying assembly is increased, the bacterial solution recovered in the space is increased, so that the bacterial solution in the external high acid-resistant desulfurization strain mixed solution tank can be not used any more, but only the bacterial solution recovered in the space is used for spraying, and the bacterial solution in the external high acid-resistant desulfurization strain mixed solution tank can be intermittently subjected to liquid supplementing operation, in particular, a pipeline can be arranged on the spraying assembly to be connected with the high acid-resistant desulfurization strain mixed solution tank, and an intermittent opening valve is arranged.
As shown in fig. 9, the spray assembly includes a collar 131 arranged in the spray tower 130 in parallel from top to bottom, nozzles 132 are uniformly arranged on the lower surface of the collar 131, a liquid supporting pipe 133 is fixedly arranged on one side of the collar 131, and a main liquid pipe 134 is fixedly arranged between the liquid supporting pipes 133; the main liquid pipe 134 is fixedly communicated with the recovery pipe 320; in this embodiment, when the bacterial liquid discharged from the recovery tube 320 reaches the main liquid tube 134 and is dispersed into the branch liquid tube 133, then enters the loop pipe 131, and finally is sprayed from the nozzle 132, the loop pipe 131 is provided to increase the spraying area.
As shown in fig. 1, it is preferable that a biofilter tower 900 is provided at one side of the spray tower 130, and an upper end of the spray tower 130 is fixedly connected to a lower end of the biofilter tower 900 through a connection pipe 700, and an exhaust chimney 800 is installed at an upper end of the biofilter tower 900, so that the exhaust gas desulfurized and deodorized by the spray tower 130 can enter the biofilter tower 900 through the connection pipe 700 to be biologically filtered, and is discharged from the exhaust chimney 800 after secondary purification.
As shown in fig. 2, it is preferable that a turbulence structure 120 is disposed in the space, and the turbulence structure 120 may turbulence the mixed solution of the high acid-resistant desulfurization strain recovered in the space, so that the mixed solution of the high acid-resistant desulfurization strain recovered in the space encounters resistance, unstable flow and other phenomena during the moving process, resulting in a change of the flowing direction and speed, and the flowing track becomes complex and various, so that the mixed solution of the high acid-resistant desulfurization strain is uniformly heated.
In use (during operation), the high acid-resistant desulfurization strain mixed liquor enters the spray tower 130 through the exhaust gas inlet pipe 600, is pumped into the spray assembly through the external high acid-resistant desulfurization strain mixed liquor box, contacts the downward sprayed high acid-resistant desulfurization strain mixed liquor with the upward flowing exhaust gas, the mixed solution of the high acid-resistant desulfurization strains can primarily decompose hydrogen sulfide in the exhaust gas to remove odor, and can enter the biological filter tower 900 through the connecting pipe 700 to carry out biological filtration, and the mixed solution is discharged from the exhaust chimney 800 after secondary purification.
The sprayed mixed solution of the high acid-resistant desulfurization strain reaches the lower liquid pipe 530 downwards due to gravity, and reaches the filter box 520 to be filtered by the filter screen in the filter box, the filtered mixed solution of the high acid-resistant desulfurization strain in the space and the mixed solution of the high acid-resistant desulfurization strain in the spray tower 130 can be heated to the optimum temperature for the propagation of the required strain by the heating wire 400, and the aeration mechanism 200 aerates the bacterial solution, but when the bacterial solution height cannot reach the height of the upper aeration main body 240, the upper aeration main body 240 is in an aeration state, when the air flow of the branch pipe 250 wants to enter the inner cylinder 243 through the second air inlet pipe 233, the air flow of the branch pipe 250 can give a thrust to the first plate, but the first plate cannot be pushed due to the limiting effect of the limiting block 237, and the air in the branch pipe 250 is prevented from entering the inner cylinder 243; conversely, when the liquid level of the mixed liquid of the high acid-resistant desulfurization strain reaches the height of one aeration main body 240, the mixed liquid of the high acid-resistant desulfurization strain reaches the inside of the shell 241 through the aeration holes 242, so that the mixed liquid of the high acid-resistant desulfurization strain can give the L-shaped valve plate 238 thrust, the L-shaped valve plate 238 can move towards the direction far away from the inner cylinder 243, the spring 235 is in a stretched state, the valve core is opened at the moment, so that the external airflow can enter the inner cylinder 243, when the airflow in the inner cylinder 243 passes through the air opening, the fan 246 in the inner cylinder can generate tangential thrust to the inner cylinder 243 due to the thrust of the airflow, thereby the inner cylinder 243 can perform rotary motion taking the center shaft 245 as the center of a circle, and the air opening on the inner cylinder 243 can be alternately positioned in the first space and the second space, so that the alternate air openings of the aeration holes 242 on two sides can be alternately sprayed, namely, the aeration holes 242 on one side are in a consent period, the one-side exhaust has the advantage, namely the air sprayed out from the aeration main body 240 can generate a reverse thrust, so that the aeration main body 240 can swing along the flexible structure 230, thereby the swing aeration main body 240 can generate swing motion, and the swing efficiency of the swing aeration main body 240 can be increased, and the swing aeration main body 240 can occupy the swing effective area; preferably, a lifting rope 260 is arranged between the flexible air inlet structure 230 and the branch pipe 250, so that the aeration main body 240 is suspended on the branch pipe 250 by the lifting rope 260, the stress of the flexible air inlet structure 230 is reduced, the service life of the flexible air inlet structure 230 is prolonged, the situation that the flexible air inlet structure 230 is wound and dead-tied due to single reverse thrust force can be avoided by alternative aeration, the aeration and bacterial liquid under proper temperature can be rapidly propagated in a space, and then the bacterial liquid can be discharged from an overflow port and the mixed liquid of the high acid-resistant desulfurization bacterial strain can be reintroduced into the spraying assembly by the bacterial liquid reflux mechanism 300 for use.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. Waste gas biological treatment device based on high acid-resistant desulfurization strain, including outer tower (110), characterized by still includes:
the spray tower (130), the spray tower (130) is positioned inside the outer tower (110), and a space is formed between the spray tower (130) and the outer tower (110), and the space is used for containing the mixed solution of the high acid-resistant desulfurization strain;
an introduction mechanism (500) is arranged at the bottom of the spray tower (130);
the introducing mechanism (500) comprises a filter box (520) arranged below the spray tower (130), a liquid discharging pipe (530) for connecting the filter box (520) with the spray tower (130), an introducing pump (510) for pumping out liquid of the filter box (520), and an introducing pipe (540) for connecting a liquid outlet of the introducing pump (510) with the interval space;
a spray assembly is arranged in the spray tower (130), an overflow port is formed in one side of the top of the outer tower (110), and a bacteria liquid reflux mechanism (300) is arranged between the overflow port and the spray assembly;
the bacteria liquid reflux mechanism (300) comprises a recovery pump (310) arranged at one side of the spray tower (130), an overflow pipe (330) fixed between a liquid inlet and an overflow port of the recovery pump (310) and a recovery pipe (320) arranged between a liquid outlet of the recovery pump (310) and the spray assembly;
a heating wire (400), the heating wire (400) being mounted on the spray tower (130) to provide a desired temperature to the outer tower (110) and the space;
and the aeration mechanism (200) is arranged on one side of the outer tower (110), and the aeration mechanism (200) is used for aerating the high acid-resistant desulfurization strain in the interval space.
2. The exhaust gas biological treatment device based on a high acid-resistant desulfurization strain according to claim 1, characterized in that: the aeration mechanism (200) comprises a plurality of branch pipes (250) which are arranged side by side up and down, one end of each branch pipe (250) is positioned in the interval space, one end of each branch pipe (250) positioned in the interval space is provided with a flexible air inlet structure (230), and the other end of each flexible air inlet structure (230) is provided with an aeration main body (240);
the aeration main body (240) comprises a shell (241), one side of the shell (241) is provided with an aeration hole (242), and air flow sprayed out of the aeration hole (242) can generate a reverse thrust to the aeration main body (240), and the reverse thrust enables the aeration main body (240) to swing;
a lifting rope (260) is arranged between the flexible air inlet structure (230) and the branch pipe (250).
3. The exhaust gas biological treatment device based on a high acid-resistant desulfurization strain according to claim 2, characterized in that:
an inner cylinder (243) is arranged in the middle of the inside of the aeration hole (242), and the inner cylinder (243) is used for receiving gas entering the inside of the shell (241) from the flexible air inlet structure (230);
baffle plates (248) are arranged on two sides of the inner wall of the shell (241) along the diameter direction of the inner cylinder (243), the baffle plates (248) and the inner cylinder (243) divide the inner space of the shell (241) into a first space and a second space, and aeration holes (242) are arranged on two sides of the shell (241) and at positions corresponding to the first space and the second space;
an air port is arranged on one side of the inner cylinder (243) close to the second space, and is used for spraying out air in the inner cylinder (243) through an aeration hole (242);
a fan blade (246) is arranged in the air opening, one end of the inner cylinder (243) far away from the flexible air inlet structure (230) is rotatably arranged in the shell (241) through a middle shaft (245), and air flow passing through the fan blade (246) can drive the inner cylinder (243) to rotate by taking the middle shaft (245) as a center of a circle so that the air opening is alternately positioned in the first space and the second space;
one side of the baffle (248) close to the inner cylinder (243) is fixed with a minor arc limiting plate (244), and the inner cambered surface of the minor arc limiting plate (244) is used for limiting the rotation of the inner cylinder (243).
4. The exhaust gas biological treatment device based on a high acid-resistant desulfurization strain according to claim 2, characterized in that: the flexible air inlet structure (230) comprises a second air inlet pipe (233) which is fixed on the shell (241) and communicated with the inner cylinder (243), a first air inlet pipe (234) which is arranged on one side of the cambered surface of the second air inlet pipe (233), a valve core which is positioned in the second air inlet pipe (233) and a connecting hose (231) which is used for connecting the first air inlet pipe (234) with the branch pipe (250);
the valve core comprises an L-shaped valve plate (238), the L-shaped valve plate (238) comprises a first plate and a second plate, the first plate seals a channel in the second air inlet pipe (233), and the second plate is fit on the arc-shaped inner wall of one side, far away from the first air inlet pipe (234), of the second air inlet pipe (233);
a spring (235) is fixedly arranged on one side of the first plate, which is close to the inner cylinder (243), a spring seat (236) is fixed between the other end of the spring (235) and the second air inlet pipe (233), an L-shaped valve plate (238) is positioned between the first air inlet pipe (234) and the outer shell (241) in a natural state of the spring (235), a limiting block (237) is arranged on the inner wall of the second air inlet pipe (233), the limiting block (237) is used for limiting the first plate to move towards the inner cylinder (243), and the L-shaped valve plate (238) can be pushed when the outer shell (241) is filled with mixed liquid of high acid-resistant desulfurization strains;
one surface of the first plate, which is close to the spring (235), is provided as an inclined surface.
5. The exhaust gas biological treatment device based on a high acid-resistant desulfurization strain according to claim 4, characterized in that: the aeration mechanism (200) further comprises an aerator (210), a main air inlet pipe (220) is fixed at an exhaust port of the aerator (210), and one end, far away from the outer tower (110), of the branch pipe (250) is fixedly communicated with the main air inlet pipe (220).
6. The exhaust gas biological treatment device based on a high acid-resistant desulfurization strain according to claim 1, characterized in that: the spray assembly comprises annular pipes (131) which are arranged in the spray tower (130) side by side up and down, nozzles (132) are uniformly arranged on the lower surface of the annular pipes (131), liquid supporting pipes (133) are fixedly arranged on one side of the annular pipes (131), and main liquid pipes (134) are fixedly arranged between the liquid supporting pipes (133);
the main liquid pipe (134) is fixedly communicated with the recovery pipe (320).
7. The exhaust gas biological treatment device based on a high acid-resistant desulfurization strain according to claim 6, characterized in that: one side of the spray tower (130) is provided with a biological filter tower (900), the upper end of the spray tower (130) is fixedly communicated with the lower end of the biological filter tower (900) through a connecting pipe (700), and an exhaust chimney (800) is arranged at the upper end of the biological filter tower (900).
8. The exhaust gas biological treatment device based on a high acid-resistant desulfurization strain according to claim 1 or 7, characterized in that: a turbulence structure (120) is arranged in the interval space.
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| CN202311594263.5A CN117358054B (en) | 2023-11-27 | 2023-11-27 | Waste gas biological treatment device based on high acid-resistant desulfurization strain |
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| CN209865729U (en) * | 2019-03-12 | 2019-12-31 | 青岛宏树生物科技有限公司 | Deodorization desulphurization unit |
| WO2022271011A1 (en) * | 2021-06-21 | 2022-12-29 | Paques I.P. B.V. | A process to continuously treat a hydrogen sulphide comprising gas and sulphur reclaiming facilities |
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| JPH0975663A (en) * | 1995-09-12 | 1997-03-25 | Kyowa Kako Kk | Apparatus and method for desulfurizing treatment of hydrogen sulfide-containing gas |
| CN205392149U (en) * | 2016-03-01 | 2016-07-27 | 中石化石油工程设计有限公司 | Self -circulation desulfurizing tower |
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