CN112569749B - Device for pretreating oil-containing waste gas - Google Patents
Device for pretreating oil-containing waste gas Download PDFInfo
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- CN112569749B CN112569749B CN202011313150.XA CN202011313150A CN112569749B CN 112569749 B CN112569749 B CN 112569749B CN 202011313150 A CN202011313150 A CN 202011313150A CN 112569749 B CN112569749 B CN 112569749B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- 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
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- 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
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- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention discloses a device for pretreating oily waste gas, which comprises a spray tower main body, wherein the lower part in the spray tower main body is divided into a liquid storage tank by a slope sealing plate, the liquid storage tank is sequentially divided into a liquid storage tank 1 section, a liquid storage tank 2 section and a liquid storage tank 3 section from left to right, a filler support is further arranged in the middle in the liquid storage tank 1 section, an annular overflow groove is formed in the inner wall of the liquid storage tank above the filler support, a water falling port is formed in the position, corresponding to the liquid storage tank 1 section, of the slope sealing plate, a valve port for injecting steam is formed in the side wall of the liquid storage tank below the filler support, and the liquid storage tank 2 section is communicated with an annular gas-liquid pipe arranged at the bottom in the liquid storage tank 1 section through a pipeline and a gas-liquid mixing pump. The invention can effectively collect the oil-containing components in the waste gas in the pretreatment section in a centralized way, and avoids the risk of blocking the bed layer of the subsequent waste gas treatment system due to more oil components, thereby ensuring the reliable and stable operation of the post-treatment system.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a device for pretreating oil-containing waste gas.
Background
The oil-containing waste gas is one of the important sources of air pollution, most of the waste gases from the production processes of the industries such as chemical industry, petrifaction, rubber and the like and the sewage treatment process have toxicity, foul smell, flammability and explosiveness, and part of the waste gases are important precursors for forming ozone and fine particulate matters, so the waste gases can be discharged after being treated to reach the standard. Generally, the conventional methods such as regenerative thermal combustion (RTO), regenerative catalytic combustion (RCO), biological treatment, and activated carbon adsorption can effectively treat organic waste gas, but because the oily waste gas has complex components and contains more boiling point organic matters, the conventional methods are directly applied to treat the oily waste gas, which easily causes the problems of bed layer blockage, etc., which undoubtedly affects the stable and continuous treatment of the oily waste gas, and increases the safety risk of waste gas treatment. The selective separation of high boiling point organic compounds in the oily waste gas is a simple and effective method for converting the oily waste gas into general organic waste gas. However, a pretreatment device capable of specifically treating the bed layer components which are easy to block in the oily waste gas does not appear in the existing oily waste gas treatment process. Therefore, the development of the oil-containing waste gas pretreatment device has important significance for promoting the sustainable development of related industries, ensuring the physical health of people and winning the blue sky guard war.
Disclosure of Invention
In order to solve the technical problem, the invention provides a device for pretreating oil-containing waste gas.
The technical scheme of the invention is as follows: a device for pretreating oil-containing waste gas comprises a spray tower main body, wherein the lower part in the spray tower main body is divided into a liquid storage tank by a slope sealing plate,
the liquid storage tank is sequentially divided into a liquid storage tank 1 section, a liquid storage tank 2 section and a liquid storage tank 3 section from left to right, and the lower parts of the liquid storage tank 1 section and the liquid storage tank 2 section and the upper parts of the liquid storage tank 2 section and the liquid storage tank 3 section are communicated through a group of water through holes;
a filler bracket is also arranged in the middle of the section 1 of the liquid storage tank, an annular overflow groove is arranged on the inner wall of the liquid storage tank above the filler bracket,
the side wall of the spray tower body at one side above the gradient seal plate is provided with a gas injection port for injecting oil-containing waste gas, a water falling port is arranged at the position of the gradient seal plate corresponding to the 1 section of the liquid storage tank,
the overflow groove is connected with an oil storage groove arranged outside the spray tower main body through a guide pipe and a valve, the side wall of the liquid storage tank below the filler support is provided with a valve port for injecting steam,
the section 2 of the liquid storage tank is communicated with an annular gas-liquid pipe arranged at the bottom in the section 1 of the liquid storage tank through a pipeline and a gas-liquid mixing pump.
The device is mainly arranged aiming at the oil-containing waste gas treatment engineering generated in the existing chemical industry, petrochemical industry and other industries. Through this preprocessing device, utilize gas film tension, coconut husk filler oil absorption and high temperature deoiling principle, concentrate the oily component in the waste gas at the preliminary treatment section and collect, avoid because of the more condition of oily component, the risk of blockking up follow-up exhaust treatment system bed to ensure that aftertreatment system is reliable, steady operation.
Further, the mouth that falls into water is the bar setting, the volume of 1 section of liquid reserve tank, 2 sections of liquid reserve tank and 3 sections of liquid reserve tank accounts for than being 1: 1: 2, and the 2 sections of the liquid storage tank are longitudinally provided with water tank clapboards for separation. The aforesaid accounts for than setting up, when can the effectual oil absorption deoiling setting of guaranteeing 1 section of liquid reserve tank, guarantees the stock solution performance of guaranteeing the liquid reserve tank under 2 sections of liquid reserve tanks and 3 sections of volumes of liquid reserve tank exist.
Further, the high liquid level value of the liquid storage tank is 750 mm.
Furthermore, a plurality of groups of spraying fillers and demisting fillers are sequentially arranged in the spraying tower main body above the gas injection port from bottom to top, a group of spraying pipes for spraying is respectively arranged above each layer of the spraying fillers, and the upper top surface of the spraying tower main body is communicated with an induced draft fan through a pipeline and is used for conveying to an advanced treatment device; the thickness of a single layer of the spraying filler is 800-1000 mm, and the spraying filler is made of pall ring ceramics. Through the effective purification treatment who can guarantee oiliness waste gas through above-mentioned setting, spray the filler to it simultaneously and set up in segmentation and highly inject, avoid the air current to rise and receive the hindrance, can guarantee to spray under the effective treatment of filler at each section to guarantee the high-efficient purification treatment to oiliness waste gas.
Further, a circulating water tank is arranged outside the spray tower main body, the circulating water tank is provided with a liquid level meter, a thermometer, a pH meter, a circulating water tank and other instrument control assemblies, the circulating water tank is communicated with the spray pipe and the liquid storage tank through a pipeline and a circulating water pump, and the ratio of the flow of the circulating water pump to the flow of the waste gas is 3: 1000. can make the whole hydrologic cycle that carries on of device through circulation tank setting, prescribe a limit to circulating water pump flow and waste gas flow ratio, can guarantee that the device handles the high-efficient operation of waste gas and handles.
Furthermore, the filler bracket (3) is loaded with coconut shell filler, and the thickness of the coconut shell filler and the thickness of the filler bracket are controlled to be 350 mm. The thickness control can effectively improve the transverse area of the section 1 of the liquid storage tank under the volume ratio, provide good coconut shell filling effect and improve the oil absorption and separation effect of the coconut shell filling;
the coconut shell filler comprises the following components in percentage by weight: 20-65% of coconut shell particles and 35-80% of coconut carbon-aluminum-containing ceramic particles are uniformly mixed, wherein the particle sizes of the coconut shell particles and the coconut carbon-aluminum-containing ceramic particles are both controlled to be 2-4 mm; the preparation method of the coconut carbon-aluminum-containing ceramic particles comprises the following steps: 1) uniformly mixing 5-10 parts of aluminum powder and 20-30 parts of ceramic powder in parts by weight, and pressing into small balls with the particle size of 1-2 mm; 2) then soaking the small balls into enough adhesive for 2-3s, and taking out; 3) and then placing the balls soaked with the adhesive on enough coconut carbon fibers, rolling to wrap a layer of coconut carbon fibers on the surface of the balls, and obtaining the coconut carbon-aluminum-containing ceramic particles. The coconut shell filler has extremely strong oil absorption effect, and has more excellent deoiling effect compared with the traditional coconut shell particles, thereby further improving the oil absorption and deoiling efficiency and the service life of the coconut shell filler on the basis of the existing material.
Further, the filler bracket includes:
the bracket frame body is loaded with fillers and comprises arc-shaped side edges and straight side edges, the straight side edges are detachably connected with the arc-shaped side edges, the arc-shaped side edges are of an inner-layer structure, the outer layer and the inner layer of the arc-shaped side edges are designed to be slidable, the bottom end of the outer layer is also provided with a mesh bottom plate used for covering the bracket frame body,
the filling shell is a cuboid, magnetic stripes are arranged at four edges of the filling shell, the four sides of the filling shell are of a net structure, the filling shell is provided with a plurality of rows, each longitudinal row of the filling shell is rotationally connected with the inner wall of the inner layer of the arc-shaped side through a corresponding flat slide block, a vertical groove for the sliding of a central block arranged at the rear end of the filling shell is arranged at the flat slide block, a strip-shaped groove for the sliding of the filling shell is arranged at the straight side, and a detachable soft baffle is arranged in the filling shell behind the central block,
the bar groove is externally provided with a plurality of groups of control bars for controlling the rotation and the lifting of each horizontal row of packing shells, the control bars are rotationally connected with a central shaft arranged on the side surface of one side corresponding to the packing shells, and a telescopic rod is arranged between every two adjacent groups of control bars.
Through the structural design of above-mentioned filler support, can carry out the switching processing between two kinds of modes through the control strip, consequently can carry out fast switch over to filler support according to the user demand to satisfy different service environment demands, carry out the selection of different modes according to waste gas grease content height.
Furthermore, the control bar comprises a control shell, a plurality of groups of rotating teeth connected with the central shaft in a one-to-one correspondence manner, toothed belts sleeved on the rotating teeth, and a shifting lever for shifting the toothed belts to rotate, wherein sliding blocks which are uniformly distributed are arranged on the outer side wall of the toothed belts and slidably clamped with sliding block grooves in the inner wall of the control shell, a slotted hole for the shifting lever to move is formed in the side wall edge of the front end of the control shell, and the shifting lever is fixedly connected with the toothed belts. Through the structural design of the control strips, the horizontal packing shells corresponding to the control strips can be quickly controlled, so that the packing shells are arranged and assembled.
The invention has the beneficial effects that:
(1) according to the invention, according to the physicochemical characteristics of the oily waste gas, the oily components in the oily waste gas are separated at the pretreatment section by utilizing the principles of gas film tension, filler low-temperature oil absorption and high-temperature deoiling, so that the subsequent waste gas treatment bed layer is prevented from being blocked due to more oily components and high boiling point, the safe and stable operation of the whole waste gas treatment is ensured, and the service life of the subsequent treatment device is prolonged. The device is widely applied to the treatment of oily waste gas generated in the industrial production processes of chemical industry, petrifaction, rubber and the like and the wastewater treatment process, and has good application prospect.
(2) The application also provides a filler which takes cheap agriculture and forestry waste coconut shells as a main component, the filler not only has extremely strong grease adsorption effect, but also has more excellent deoiling effect compared with the traditional coconut shell particles, so that the oil absorption and deoiling efficiency and the service life of the coconut shell are further improved, and the waste is changed into valuable.
(3) The application still provides a filler support structure, can carry out the mode to filler support according to device structural design and switch between to carry out the selection of different modes according to waste gas grease content height, and then satisfy different oily exhaust-gas treatment operating modes, expanded the application scope of device greatly.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of the structure of the liquid storage tank of the present invention.
Fig. 3 is a schematic cross-sectional view taken along line a-a of fig. 2 in accordance with the present invention.
FIG. 4 is a schematic cross-sectional view taken at B-B of FIG. 2 according to the present invention.
FIG. 5 is a schematic diagram of the construction of the inventive packing support.
FIG. 6 is an exploded view of the support frame of the packing support of the present invention.
Fig. 7 is a schematic front view of the construction of the packing shell of the present invention.
Fig. 8 is a schematic back view of the construction of the packing shell of the present invention.
Fig. 9 is a schematic view of the internal structure of the control strip of the present invention.
Fig. 10 is a first mode of operation of the filler bracket of the present invention.
Fig. 11 is a second mode of operation of the packing holder of the present invention.
Wherein, 1-spray tower main body, 11-gradient closing plate, 111-water falling port, 12-gas injection port, 13-spray filler, 14-demisting filler, 2-liquid storage tank, 21-liquid storage tank 1 section, 22-liquid storage tank 2 section, 23-liquid storage tank 3 section, 24-water passing hole, 25-overflow groove, 26-valve port, 27-annular gas-liquid pipe, 3-filler support, 31-support frame body, 311-arc side, 311 a-outer layer, 311 b-inner layer, 312-straight side, 313-strip groove, 32-filler shell, 321-central shaft, 322-magnetic strip, 323-central block, 324-soft baffle, 33-flat slide block, 331-vertical groove, 34-control strip, 341-control shell, 342-rotating teeth, 343-toothed belts, 344-deflector rods, 345-slotted holes, 35-telescopic rods, 4-oil storage tanks, 5-gas-liquid mixing pumps, 6-spray pipes, 7-induced draft fans and 8-circulating water tanks.
Detailed Description
Example 1
As shown in fig. 1, a device for pretreating oily waste gas comprises a spray tower main body 1, wherein a plurality of groups of spray fillers 13 and demisting fillers 14 are sequentially arranged in the spray tower main body 1 above a gas injection port 12 from bottom to top, a group of spray pipes 6 for spraying are respectively arranged above each layer of spray fillers 13, and the upper top surface of the spray tower main body 1 is communicated with an induced draft fan 7 through a pipeline and is used for conveying the spray pipes to an advanced treatment device; the thickness of a single layer of the spraying filler 13 is 900mm, and the spraying filler is made of pall ring ceramics;
as shown in fig. 2, the lower part of the spray tower main body 1 is divided into a liquid storage tank 2 by a slope closing plate 11, the liquid storage tank 2 is divided into a liquid storage tank 1 section 21, a liquid storage tank 2 section 22 and a liquid storage tank 3 section 23 from left to right, and the lower parts of the liquid storage tank 1 section 21 and the liquid storage tank 2 section 22, and the upper parts of the liquid storage tank 2 section 22 and the liquid storage tank 3 section 23 are communicated through a group of water through holes 24; the middle part in the section 21 of the liquid storage tank 1 is also provided with a bracket for loading coconut shell filler, and the inner wall of the liquid storage tank 2 above the coconut shell filler is provided with an annular overflow groove 25, wherein the coconut shell filler is coconut shell particles with the particle size of 2-4 mm;
as shown in fig. 2, the 1 lateral wall of spray tower main part of slope shrouding 11 top one side is equipped with the gas injection mouth 12 that is used for pouring into oily waste gas into, and the mouth 111 that falls into water has been seted up with 1 section 21 position department of storage tank to slope shrouding 11, and the mouth 111 that falls into water is the bar setting, and the volume of 1 section 21 of storage tank, 2 sections 22 of storage tank and 3 sections 23 of storage tank accounts for than being 1: 1: 2, a water tank partition plate is longitudinally arranged on the section 22 of the liquid storage tank 2 for separation; the overflow groove 25 is connected with an oil storage tank 4 arranged outside the spray tower main body 1 through a guide pipe and a valve, a valve port 26 for injecting steam is arranged on the side wall of the liquid storage tank 2 below the coconut shell filler, the section 22 of the liquid storage tank 2 is communicated with an annular gas-liquid pipe 27 arranged at the bottom in the section 21 of the liquid storage tank 1 through a pipeline and a gas-liquid mixing pump 5, the high liquid level value of the liquid storage tank 2 is 750mm, and the thickness of the coconut shell filler is controlled at 350 mm;
as shown in fig. 1, spray tower main part 1 is external to have circulation tank 8, and circulation tank 8 disposes level gauge, thermometer, pH meter, instrument control assembly such as circulation tank, and circulation tank 8 communicates with shower 6, liquid reserve tank 2 through pipeline and circulating water pump, and circulating water pump flow and exhaust gas flow ratio are 3: 1000.
the method for treating the oily waste gas of the device comprises the following steps: under the action of a draught fan 7, oily waste gas enters the spray tower main body 1 from a gas injection port 12 at the bottom and uniformly passes through a spray filler 13 in the spray tower main body 1, the waste gas is reversely and fully contacted with spray water of the spray pipe 6, and oil-containing and water-soluble organic and inorganic components in the waste gas are intercepted; the oil is circulated to the liquid storage tank 2 along with the circulating water; the light part floats to the surface and is directly discharged out through an overflow trough 25; heavy oil is adsorbed by coconut shell filler, steam is introduced from a valve port 26 or an electric heater is turned on according to actual adsorption conditions, the temperature of water liquid is increased, the coconut shell filler and the heavy oil sprayed on the filler are separated, meanwhile, a gas-liquid mixing pump 5 is turned on, the oil floats to the liquid level through the surface tension of bubbles, and the oil is discharged to an oil storage tank 4 through an overflow tank 25.
Example 2
This example is essentially the same as example 1, except that the coconut shell filler is composed of, in weight percent: 45 percent of coconut shell particles and 55 percent of coconut carbon-aluminum-containing ceramic particles are uniformly mixed, wherein the particle sizes of the coconut shell particles and the coconut carbon-aluminum-containing ceramic particles are controlled to be 2-4 mm; the preparation method of the coconut carbon-aluminum-containing ceramic particles comprises the following steps: 1) uniformly mixing 7 parts of aluminum powder and 24 parts of ceramic powder in parts by weight, and pressing into small balls with the particle size of 2 mm; 2) then soaking the small balls into enough adhesive for 2s, and taking out; 3) and then placing the pellets soaked with the adhesive on enough coconut carbon fibers, rolling to wrap a layer of coconut carbon fibers on the surface of the pellets, and obtaining the coconut carbon-aluminum-containing ceramic particles.
Example 3
This embodiment is basically the same as embodiment 1, and is different therefrom in that a filler support 3 for loading coconut stuffing is further disposed in the middle of the inside of the section 21 of the liquid storage tank 1, and the filler support 3 includes:
as shown in fig. 5 and 6, the rack frame 31 for loading the filler includes an arc-shaped side 311 and a straight side 312, the straight side 312 is detachably connected to the arc-shaped side 311, the arc-shaped side 311 is an inner-outer layer structure, an outer layer 311a and an inner layer 311b are slidably designed, a mesh bottom plate for covering the rack frame 31 is further disposed at the bottom end of the outer layer 311a,
as shown in fig. 10, a plurality of sets of the square filler shells 32 are arranged, as shown in fig. 7 and 8, magnetic stripes 322 are disposed at four sets of edges of the filler shell 32, four sets of sides of the filler shell 32 are all of a mesh structure, the filler shell 32 is provided with a plurality of rows, each longitudinal row of the filler shell 32 is rotatably connected with the inner wall of the inner layer 311b of the arc-shaped side 311 through a corresponding flat slider 33, a vertical groove 331 for sliding a central block 323 disposed at the rear end of the filler shell 32 is disposed at the flat slider 33, a strip-shaped groove 313 for sliding the filler shell 32 is disposed on the straight side 312, a detachable soft baffle 324 is disposed in the filler shell 32 behind the central block 323,
as shown in fig. 5 and 9, a plurality of groups of control bars 34 are arranged outside the strip-shaped groove 313 to control and switch the rotation and lifting of each row of the packing shell 32, the control bars 34 are rotationally connected with a central shaft 321 arranged on the side surface of the corresponding side of the packing shell 32, an expansion link 35 is arranged between two adjacent groups of control bars 34, each control bar 34 comprises a control shell 341, a plurality of groups of rotating teeth 342 connected with the central shaft 321 in a one-to-one correspondence manner, a toothed belt 343 sleeved on each rotating tooth and a shift lever 344 for shifting the toothed belt 343 to rotate, sliders uniformly distributed are arranged on the outer side wall of the toothed belt 343 and slidably engaged with slider grooves on the inner wall of the control shell 341, a slot 345 for movement of the shift lever 344 is arranged on the side wall edge of the front end of the control shell 341, and the shift lever 344 is fixedly connected with the toothed belt 343.
The use method of the filler bracket 3 comprises the following steps: selecting different modes according to the oily waste gas, wherein the mode I is used when the oil content in the oily waste gas is high, and the mode II is used when the oil content in the oily waste gas is low;
the coconut stuffing is filled into each stuffing shell 32, then the straight side 312 and the stuffing shells 32 are assembled with the arc-shaped side 311 in an inserting way, then the stuffing support 3 is loaded to the area of the coconut stuffing, and then the mode adjustment is carried out according to the use requirement, which is as follows:
mode one → mode two: the control bar 34 is lifted up to drive the corresponding packing shell 32, and then the shift lever 344 is shifted to drive the toothed belt 343 to move to the other end of the slot 345, so that each rotating tooth 342 is rotated under the action of the toothed belt 343, and the corresponding packing shell 32 is switched from the diagonal vertical to the horizontal vertical, so that the mode I in fig. 10 is switched to the mode II in fig. 11;
mode two → mode one: the shift lever 344 is shifted to drive the toothed belt 343 to move to the other end of the slot 345, and each rotating tooth 342 is rotated under the action of the toothed belt 343, so that the corresponding packing casing 32 is switched from horizontal to vertical to diagonal, and then each row in the longitudinal direction is naturally attracted, so that the mode two in fig. 11 is switched to the mode one in fig. 10.
Example 4
The present embodiment is substantially the same as embodiment 2, and is different from embodiment 2 in that the coconut stuffing is prepared by different groups, specifically: the coconut shell filler comprises the following components in percentage by weight: the coconut shell particles with the particle size of 20 percent and the coconut carbon-aluminum-containing ceramic particles with the particle size of 80 percent are evenly mixed, wherein the particle sizes of the coconut shell particles and the coconut carbon-aluminum-containing ceramic particles are controlled to be 2-4 mm; wherein, the preparation method of the coconut carbon-aluminum-containing ceramic particles comprises the following steps: 1) uniformly mixing 7 parts of aluminum powder and 24 parts of ceramic powder in parts by weight, and pressing into small balls with the particle size of 2 mm; 2) then soaking the small balls into enough adhesive for 2s, and taking out; 3) and then placing the pellets soaked with the adhesive on enough coconut carbon fibers, rolling to wrap a layer of coconut carbon fibers on the surface of the pellets, and obtaining the coconut carbon-aluminum-containing ceramic particles.
Example 5
The present embodiment is substantially the same as embodiment 2, and is different therefrom in that the coconut shell filler is prepared from different groups, specifically: the coconut shell filler comprises the following components in percentage by weight: the coconut shell particles with the particle size of 65 percent and the coconut carbon-aluminum-containing ceramic particles with the particle size of 35 percent are uniformly mixed, wherein the particle sizes of the coconut shell particles and the coconut carbon-aluminum-containing ceramic particles are controlled to be 2-4 mm; the preparation method of the coconut carbon-aluminum-containing ceramic particles comprises the following steps: 1) uniformly mixing 7 parts of aluminum powder and 24 parts of ceramic powder in parts by weight, and pressing into small balls with the particle size of 2 mm; 2) then soaking the small balls into enough adhesive for 2s, and taking out; 3) and then placing the pellets soaked with the adhesive on enough coconut carbon fibers, rolling to wrap a layer of coconut carbon fibers on the surface of the pellets, and obtaining the coconut carbon-aluminum-containing ceramic particles.
Example 6
The present embodiment is substantially the same as embodiment 2, and is different from embodiment 2 in that the coconut stuffing is prepared by different groups, specifically: the coconut shell filler comprises the following components in percentage by weight: 45 percent of coconut shell particles and 55 percent of coconut carbon-aluminum-containing ceramic particles are uniformly mixed, wherein the particle sizes of the coconut shell particles and the coconut carbon-aluminum-containing ceramic particles are controlled to be 2-4 mm; the preparation method of the coconut carbon-aluminum-containing ceramic particles comprises the following steps: 1) uniformly mixing 5 parts of aluminum powder and 20 parts of ceramic powder in parts by weight, and pressing into small balls with the particle size of 2 mm; 2) then soaking the small balls into enough adhesive for 2s, and taking out; 3) and then placing the balls soaked with the adhesive on enough coconut carbon fibers, rolling to wrap a layer of coconut carbon fibers on the surface of the balls, and obtaining the coconut carbon-aluminum-containing ceramic particles.
Example 7
The present embodiment is substantially the same as embodiment 2, and is different therefrom in that the coconut shell filler is prepared from different groups, specifically: the coconut shell filler comprises the following components in percentage by weight: 45 percent of coconut shell particles and 55 percent of coconut carbon-aluminum-containing ceramic particles are uniformly mixed, wherein the particle sizes of the coconut shell particles and the coconut carbon-aluminum-containing ceramic particles are controlled to be 2-4 mm; the preparation method of the coconut carbon-aluminum-containing ceramic particles comprises the following steps: 1) uniformly mixing 10 parts of aluminum powder and 30 parts of ceramic powder in parts by weight, and pressing into small balls with the particle size of 2 mm; 2) then soaking the small balls into enough adhesive for 2s, and taking out; 3) and then placing the pellets soaked with the adhesive on enough coconut carbon fibers, rolling to wrap a layer of coconut carbon fibers on the surface of the pellets, and obtaining the coconut carbon-aluminum-containing ceramic particles.
Examples of the experiments
Experiment one: explore the oil absorption and desorption effects of the coconut shell filler
Grouping tests: the method comprises the steps of selecting the embodiment 1, the embodiment 2 and the embodiments 4 to 7 to respectively treat oily waste gas produced by a certain factory in the city, and respectively testing the oil removal effect and the oil removal duration of the oily waste gas, wherein the good and bad desorption effects have influence on the use of coconut shell filler, so that the oil removal duration is mainly determined;
the test method comprises the following steps: the same volume of oily waste gas is injected into the oil-containing waste gas respectively for example 1, example 2 and examples 4 to 7, and the oil-containing waste gas is continuously injected for a plurality of times until the oil removing effect is obviously reduced, and the oil removing frequency is recorded, and the results are shown in the following table 1:
TABLE 1 oil removal frequency of each apparatus of examples 1, 2, 4-7
| Example 1 | Example 2 | Example 4 | Example 5 | Example 6 | Example 7 | |
| Number of times/ |
7 | 14 | 10 | 12 | 13 | 12 |
And (4) conclusion: as can be seen from the results in Table 1, the oil removal times of example 2 are significantly improved compared with example 1, and it can be seen that the service life of the coconut shell filler provided in example 2 is significantly better than that of example 1; in examples 4-7, the coconut stuffing components are the same but different from those in example 2, and it can be seen that the adjustment of the combination of coconut shell particles and coconut carbon-aluminum containing ceramic particles or the adjustment of the combination of coconut carbon-aluminum containing ceramic particles has a certain effect on the use effect of the coconut stuffing, and it can be seen that the coconut stuffing combination effect in example 2 is the best.
Experiment two: explore the using effect of the filler bracket
Grouping tests: selecting the embodiment 1 and the embodiment 3 to respectively treat the waste gas with low oil content and high oil content produced by a certain factory in the city;
the test method comprises the following steps: the tests were performed by injecting low oil content exhaust gas into example 1 and example 3 (mode two), and injecting high oil content exhaust gas into example 1 and example 3 (mode one), respectively, and the duration of treating the same volume of oil-containing exhaust gas was measured, and the results are as follows:
low oil content exhaust gas: the grease removal effect in effluent is similar, and the time for treating the oil-containing waste gas with the same volume in the example 3 is shortened by 13 percent compared with that in the example 1;
high oil content exhaust gas: the grease removal effect in effluent is similar, and the time for treating the oil-containing waste gas with the same volume in the example 3 is similar to that in the example 1;
and (4) conclusion: can learn through above-mentioned result, can carry out the mode switch according to waste gas oil content through the filler support 3 that this application provided to correspond the adjustment to different oil content waste gases, in low oil content exhaust-gas treatment process, when can effectual improvement treatment effect, and do not influence deoiling effect.
Claims (2)
1. The device for pretreating the oily waste gas comprises a spray tower main body (1) and is characterized in that the lower part of the spray tower main body (1) is divided into a liquid storage tank (2) by a slope sealing plate (11),
the liquid storage tank (2) is sequentially divided into a liquid storage tank 1 section (21), a liquid storage tank 2 section (22) and a liquid storage tank 3 section (23) from left to right, and the lower parts of the liquid storage tank 1 section (21) and the liquid storage tank 2 section (22) and the upper parts of the liquid storage tank 2 section (22) and the liquid storage tank 3 section (23) are communicated through a group of water through holes (24);
a filler bracket (3) is also arranged in the middle of the inner part of the section (21) of the liquid storage tank 1, an annular overflow groove (25) is arranged on the inner wall of the liquid storage tank (2) above the filler bracket (3),
a gas injection port (12) for injecting oily waste gas is arranged on the side wall of the spray tower main body (1) at one side above the gradient seal plate (11), a water falling port (111) is arranged at the position corresponding to the 1 section (21) of the liquid storage tank on the gradient seal plate (11),
the overflow groove (25) is connected with an oil storage tank (4) arranged outside the spray tower main body (1) through a guide pipe and a valve, a valve port (26) for injecting steam is arranged on the side wall of the liquid storage tank (2) below the filler support (3),
the liquid storage tank 2 section (22) is communicated with an annular gas-liquid pipe (27) arranged at the bottom in the liquid storage tank 1 section (21) through a pipeline and a gas-liquid mixing pump (5);
the mouth of falling into water (111) is the bar setting, the volume of 1 section of liquid reserve tank (21), 2 sections of liquid reserve tank (22) and 3 sections of liquid reserve tank (23) accounts for than being 1: 1: 2, a water tank partition plate is longitudinally arranged on the section (22) of the liquid storage tank 2 for separation;
the high liquid level value of the liquid storage tank (2) is 750mm, and the thickness of the filler support (3) is controlled to be 350 mm;
a plurality of groups of spraying fillers (13) and demisting fillers (14) are sequentially arranged in the spraying tower main body (1) above the gas injection port (12) from bottom to top, a group of spraying pipes (6) for spraying are respectively arranged above each layer of the spraying fillers (13), and the upper top surface of the spraying tower main body (1) is communicated with an induced draft fan (7) through a pipeline and is used for conveying to an advanced treatment device; the thickness of a single layer of the spraying filler (13) is 800-1000 mm, and the spraying filler is made of pall ring ceramics;
spray column main part (1) is external to have circulation tank (8), circulation tank (8) dispose level gauge, thermometer, pH meter, circulation tank instrument control assembly, and circulation tank (8) are through pipeline and circulating water pump and shower (6), liquid reserve tank (2) intercommunication, circulating water pump flow and exhaust gas flow ratio are 3: 1000, parts by weight;
coconut shell filler is loaded in the filler support (3), and the thicknesses of the coconut shell filler and the filler support (3) are controlled to be 350 mm; the coconut shell filler comprises the following components in percentage by weight: 20-65% of coconut shell particles and 35-80% of coconut carbon-aluminum-containing ceramic particles are uniformly mixed, wherein the particle sizes of the coconut shell particles and the coconut carbon-aluminum-containing ceramic particles are both controlled to be 2-4 mm; the preparation method of the coconut carbon-aluminum-containing ceramic particles comprises the following steps: 1) uniformly mixing 5-10 parts of aluminum powder and 20-30 parts of ceramic powder in parts by weight, and pressing into small balls with the particle size of 1-2 mm; 2) then soaking the small balls into enough adhesive for 2-3s, and taking out; 3) then placing the balls soaked with the adhesive on enough coconut carbon fibers to roll so that the surfaces of the balls are wrapped by a layer of coconut carbon fibers to obtain coconut carbon-aluminum-containing ceramic particles;
the filler holder (3) comprises:
the support frame body (31) for loading the filler, the support frame body (31) comprises an arc-shaped side (311) and a straight side (312), the straight side (312) is detachably connected with the arc-shaped side (311), the arc-shaped side (311) is of an inner-layer structure and an outer layer (311a) and an inner layer (311b) are designed to be slidable, a mesh bottom plate for covering the support frame body (31) is further arranged at the bottom end of the outer layer (311a),
the packing casing (32) is composed of a plurality of groups of square packing casings (32) which are arranged in an arrangement manner, magnetic stripes (322) are arranged at four groups of edges of each packing casing (32), four groups of sides of each packing casing (32) are of a net structure, a plurality of rows of packing casings (32) are arranged, each longitudinal row of packing casings (32) is rotatably connected with the inner wall of the inner layer (311b) of the arc-shaped side (311) through a corresponding flat sliding block (33), a vertical groove (331) for a central block (323) arranged at the rear end of each packing casing (32) to slide is arranged at each flat sliding block (33), a strip-shaped groove (313) for the sliding of each packing casing (32) is arranged on each straight side (312), a detachable soft baffle (324) is arranged in each packing casing (32) behind each central block (323),
a plurality of groups of control strips (34) are arranged outside the strip-shaped groove (313) to control and switch the rotation and the lifting of each row of the packing shell (32), the control strips (34) are rotationally connected with a central shaft (321) arranged on the side surface of one side corresponding to the packing shell (32), and a telescopic rod (35) is arranged between every two adjacent groups of control strips (34);
the control bar (34) comprises a control shell (341), a plurality of groups of rotating teeth (342) which are connected with the central shaft (321) in a one-to-one correspondence manner, toothed belts (343) which are sleeved on the rotating teeth, and a shifting lever (344) which shifts the toothed belts (343) to rotate, wherein sliding blocks which are uniformly distributed are arranged on the outer side walls of the toothed belts (343) and are in sliding clamping connection with sliding block grooves on the inner wall of the control shell (341), a slotted hole (345) which is used for the shifting lever (344) to move is formed in the side edge of the front end side wall of the control shell (341), and the shifting lever (344) is fixedly connected with the toothed belts (343).
2. The operating process of an apparatus for the pretreatment of an oil-containing exhaust gas according to claim 1, wherein the operating process comprises the steps of:
step 1: oil-containing waste gas enters the spray tower main body (1) from the gas injection port (12) under the action of the induced draft fan (7);
step 2: the oily waste gas passes through the spraying filler (13) under the action of the induced draft fan (7), and the oily waste gas is reversely and fully contacted with water sprayed out by the spraying pipe (6) to intercept an oily component;
and step 3: the oil-containing component flows to a liquid storage tank (2) along with circulating water, wherein the light part floats to the surface, and the heavy oil is loaded with coconut shell filler in a filler bracket (3) for adsorption;
and 4, step 4: the temperature of water liquid is raised by introducing steam or turning on an electric heater, heavy oil on the coconut shell filler and the spraying filler (13) is separated, and meanwhile, a gas-liquid mixing pump (5) is turned on to enable the oil to float to the liquid level and be discharged to an oil storage tank (4) through an overflow tank (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313150.XA CN112569749B (en) | 2020-11-20 | 2020-11-20 | Device for pretreating oil-containing waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313150.XA CN112569749B (en) | 2020-11-20 | 2020-11-20 | Device for pretreating oil-containing waste gas |
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| Publication Number | Publication Date |
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| CN112569749A CN112569749A (en) | 2021-03-30 |
| CN112569749B true CN112569749B (en) | 2022-05-31 |
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| CN202011313150.XA Active CN112569749B (en) | 2020-11-20 | 2020-11-20 | Device for pretreating oil-containing waste gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116272273B (en) * | 2023-05-18 | 2023-07-21 | 天津市英格环保科技有限公司 | Deep treatment system for seasoning waste gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2537449Y (en) * | 2002-04-22 | 2003-02-26 | 黄立新 | Waste gas treating device |
| CN206308161U (en) * | 2016-11-03 | 2017-07-07 | 辽宁省环境科学研究院 | A kind of pretreatment unit for processing Integrated Refinery And Petrochemical oily waste water |
| CN106669392A (en) * | 2016-12-23 | 2017-05-17 | 常州大学 | Waste gas treatment device for setting machine |
| CN210874784U (en) * | 2019-07-28 | 2020-06-30 | 石家庄辰泰环境科技有限公司 | Washing oil film removes naphthalene equipment |
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