CN111871075B - Be used for tar processing waste gas SOx/NOx control integration equipment - Google Patents
Be used for tar processing waste gas SOx/NOx control integration equipment Download PDFInfo
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- CN111871075B CN111871075B CN202010692050.6A CN202010692050A CN111871075B CN 111871075 B CN111871075 B CN 111871075B CN 202010692050 A CN202010692050 A CN 202010692050A CN 111871075 B CN111871075 B CN 111871075B
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D46/0052—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation
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- 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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- B01D53/32—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 electrical effects other than those provided for in group B01D61/00
- B01D53/323—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 electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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Abstract
The invention discloses integrated equipment for desulfurization and denitrification of tar processing waste gas, which comprises a dust removal device, a denitrification device, a desulfurization device and an adsorption device, wherein the dust removal device comprises a dust removal box body with an ultrasonic vibration mesh screen inside, the denitrification device comprises a denitrification box body connected to the dust removal box body, a denitrification atomization assembly is arranged inside the denitrification box body, the denitrification atomization assembly comprises a driving part and a fixing part, the driving part and the fixing part are oppositely arranged, mutually crossed fiber bundle arrays are arranged on opposite surfaces, the fixing part is connected with a denitrification liquid storage box through a water pump I, the desulfurization device comprises a desulfurization box body connected to the denitrification box body, an airflow dispersion assembly positioned inside the desulfurization box body and connected with a gas outlet II, and a spray pipe positioned at the top inside the desulfurization box body, the spray pipe is connected with the desulfurization liquid storage box through a water pump II, the adsorption device comprises an adsorption box body connected to the desulfurization box body, the adsorption box body is filled with adsorption filler.
Description
Technical Field
The invention belongs to the technical field of atmospheric pollution treatment, and particularly relates to integrated equipment for desulfurization and denitrification of tar processing waste gas.
Background
Petrochemical enterprises can produce a large amount of waste gases in the tar processing and production process, the waste gases can contain large molecular weight organic matters (heavy tar), fine particles, NOX, SO2 and other composite pollutants, wherein SO2 and NOX are main atmospheric pollutants and are main reasons for causing acid rain, and if the waste gases are not directly discharged, the waste gases not only can cause air pollution to harm the environment, but also have great influence on the daily life of people.
The Chinese patent with publication number CN104606994B discloses a dust-removing, denitration and desulfurization integrated device, which comprises an electric dust-removing area, a denitration area, a desulfurization area, a demister, an active carbon adsorption layer and an exhaust fan from the bottom of the device to the top in sequence; the waste gas electric dust removal assembly arranged in the electric dust removal area comprises a flow baffle, a dust collection polar plate, a discharge electrode, a grounding electrode, a high-voltage power supply, a dust collection conical groove, a dust discharge valve and an air inlet pipe, wherein the dust collection polar plate and the discharge electrode are arranged in a vertical air flow manner; the denitration area is provided with a waste gas denitration assembly which comprises a denitration liquid spraying device and a denitration liquid storage tank; the desulfurization area is provided with a waste gas desulfurization component which comprises a desulfurization solution spraying device, a desulfurization solution storage tank and a desulfurization solution circulating pump for pumping the desulfurization solution in the desulfurization solution storage tank into the desulfurization solution spraying device; the middle of the dedusting, denitration and desulfurization integrated device is cylindrical, the upper end and the lower end of the dedusting, denitration and desulfurization integrated device are conical tank bodies, and the tank bodies are vertically placed; the denitration liquid spraying device and the desulfuration liquid spraying device are spiral spraying devices; the demister is a baffle plate demister or a swirl plate demister. But the device electric precipitation not only equipment cost and energy consumption are high but also difficult clearance and security are low, and its denitration then adopts traditional denitration liquid that sprays to contact with the waste gas that rises and reaches the purpose of denitration, leads to denitration liquid and waste gas contact rate low, also can not clear away the residual dust that is not detached in the waste gas simultaneously, leads to dust removal and denitration and follow-up desulfurization effect all unsatisfactory.
Disclosure of Invention
Aiming at the technical problems, the invention provides integrated equipment for desulfurization and denitrification of waste gas generated in tar processing.
The technical scheme of the invention is as follows: an integrated equipment for desulfurization and denitrification of tar processing waste gas, which comprises a dust removal device, a denitrification device, a desulfurization device and an adsorption device,
the dust removal device comprises a dust removal box body, a first air inlet and a first air outlet which are respectively arranged at the bottom and the top of the dust removal box body, and an ultrasonic vibration mesh screen is arranged in the dust removal box body and used for intercepting and removing solid particles in waste gas;
the denitration device comprises a denitration box body, the bottom of the denitration box body is provided with a second air inlet connected with a first air outlet, the top of the denitration box body is provided with a second air outlet, a denitration atomization assembly is arranged in the denitration box body and comprises a driving part and a fixing part, the driving part and the fixing part are oppositely arranged, mutually crossed fiber bundle arrays are arranged on opposite surfaces of the driving part and the fixing part, the driving part is driven by a driving motor outside the denitration box body and rotates relative to the fixing part, the fixing part is connected with a denitration liquid storage box outside the denitration box body through a first water pump and is used for spraying denitration liquid into the fiber bundle arrays to be mutually contacted with waste gas, and the bottom of the denitration box body is also provided with a precipitation funnel;
the desulfurization device comprises a desulfurization box body, an airflow dispersion assembly and a spray pipe, wherein the airflow dispersion assembly is positioned inside the desulfurization box body and is connected with the second gas outlet, the spray pipe is positioned at the top inside the desulfurization box body, the spray pipe is connected with a desulfurization solution storage box positioned outside the desulfurization box body through the second water pump, and the third gas outlet is arranged at the top of the desulfurization box body;
the adsorption device comprises an adsorption box body, a third air inlet connected to a third air outlet and a fourth gas outlet for discharging purified gas are arranged on the adsorption box body, and adsorption filler is filled in the adsorption box body.
Furthermore, the ultrasonic vibration mesh screen comprises a supporting frame detachably connected in the dust removal box body, the upper surface and the lower surface of the supporting frame are respectively connected with an upper layer of filtering mesh cloth and a lower layer of filtering mesh cloth, one side of the supporting frame is provided with a bearing plate penetrating through the outer wall of the dust removal box body, an ultrasonic vibrator is mounted on the bearing plate, the other side of the supporting frame is provided with a back washing pipe penetrating through the outer wall of the dust removal box body, and the back washing pipe is connected with an air pump and used for back washing dust adhered to the lower layer of filtering mesh cloth. The ultrasonic vibration frequency that ultrasonic vibrator sent makes upper filter screen cloth, lower floor filter screen cloth produce high-frequency vibration, not only does benefit to the collection dirt still can prevent that the dust from adhering to improve dust removal filtration efficiency.
Further, the drive division includes the rolling disc, the rolling disc passes through the axis of rotation and links to each other with the driving motor output shaft that is located the denitration box outside, be equipped with a plurality of locating levers that are concentric ring layer on the inboard surface of rolling disc, the fixed part includes the fixed disk that sets up relatively with the rolling disc, the fixed disk passes through the feed liquor pipe to be fixed on denitration box lateral wall, the feed liquor pipe passes through water pump one and links to each other with denitration liquid storage box, the fixed disk is inside to be equipped with and to manage communicating stock solution chamber with the feed liquor, fixed disk inboard surface is equipped with a plurality of concentric annular honeycomb ducts that are, a plurality of liquid holes have been seted up on the honeycomb duct, concentric ring layer cross arrangement that honeycomb duct and locating lever formed respectively, and the locating lever is located outermost ring layer, all the winding has the tow on every locating lever and the honeycomb duct, form intercrossing's tow array from this. When the first water pump sucks denitration liquid into the liquid storage cavity, the denitration liquid flows into the fiber bundle array through the liquid outlet hole of the guide pipe, when waste gas passes through the fiber bundle array, the driving motor drives the rotating disc and the positioning rod wound with the fiber bundles on the surface of the rotating disc to rotate, the fiber bundles are in relative rotation friction with the fiber bundles fixed on the inner surface of the fixed disc, the waste gas is in contact with the denitration liquid and is washed away by the fiber bundle array in a rotating mode, the contact rate of the waste gas and the denitration liquid is greatly increased, and the denitration efficiency is improved.
Furthermore, a flow baffle plate is arranged below the rotating disc and the fixed disc respectively and fixed on the inner side wall of the denitration box body for guiding airflow to flow to the fiber bundle array.
Furthermore, a plasma pretreatment device is connected between the first air outlet and the second air inlet and comprises a shell, a first connecting port and a second connecting port which are arranged at the upper end and the lower end of the shell and used for air inlet and outlet, and two plasma electrode plates which are oppositely arranged inside the shell, wherein the two plasma electrode plates are respectively connected with the positive pole and the negative pole of an external high-voltage pulse power supply. Through plasma to waste gas with the preliminary treatment, can reduce follow-up SOx/NOx control device's operating pressure, improve exhaust purification efficiency.
Furthermore, a first return pipe is arranged between the upper portion of the sedimentation funnel and the first water pump, a slag discharge port is formed in the bottom of the sedimentation funnel, and a discharge valve is arranged on the slag discharge port.
Further, the airflow dispersion assembly comprises an air inlet pipe vertically connected to the inside of the desulfurization box body, the upper end of the air inlet pipe is connected with a second air outlet, the lower end of the air inlet pipe extends to the lower portion of the desulfurization box body and is connected with a conical disc, the opening of the conical disc is downward, a cavity communicated with the air inlet pipe is formed in the conical disc, a plurality of air outlet holes communicated with the cavity are formed in the inner surface of the conical disc and used for dispersing and refining waste gas, and the surface of the conical disc is a smooth layer and used for guiding the desulfurization liquid falling down. The waste gas is dispersed by the conical disc to be convenient for fully contacting with the desulfurization solution, so that the desulfurization efficiency is improved.
And furthermore, a second return pipe connected with a second water pump is arranged at the bottom of the desulfurization box body.
Furthermore, a demister is arranged in the air outlet III of the desulfurization box body.
Furthermore, a plurality of baffle plates for separating the adsorption filler are arranged in the adsorption box body. The adsorption filler can be activated carbon particles or silica gel particles and is used for further adsorbing and purifying the waste gas.
The invention has the beneficial effects that:
(1) the ultrasonic vibration mesh screen is used for dedusting the waste gas, the concentration of the filter mesh screen on dust can be improved by using the ultrasonic frequency of high-frequency vibration, the capture and filtration are convenient, the dust adhesion can be prevented, and compared with an electric field, the dust removal device is low in energy consumption, easy to clean, low in cost and high in safety.
(2) The denitration device is provided with the denitration atomization component, the denitration liquid is conveyed to the fiber bundles on the surface of the fixed disc, the rotating disc is utilized to drive part of the fiber bundles to rotate, so that a fiber bundle array with relative rotation friction is formed with the fiber bundles on the surface of the fixed disc, the denitration liquid is subjected to rotation atomization, and when waste gas passes through the fiber bundle array with relative rotation friction, the waste gas is repeatedly washed, so that the contact rate of the waste gas and the atomized denitration liquid is greatly increased, the denitration efficiency is improved, and residual dust in the waste gas can be removed for the second time.
(3) The invention utilizes the plasma pretreatment device to pretreat the waste gas after dust removal, can reduce the operating pressure of the subsequent desulfurization and denitrification device, and improves the purification efficiency of the waste gas.
In a word, the device has the advantages of good desulfurization and denitrification effects on the tar processing waste gas, high gas purification rate, easy maintenance of the device and the like.
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 an ultrasonically vibrating mesh screen of the present invention;
FIG. 3 is a schematic structural view of a denitration atomizing assembly according to the present invention;
FIG. 4 is an enlarged schematic view at A in FIG. 3;
FIG. 5 is a top plan view of the rotatable disk of the present invention;
FIG. 6 is a top view of the holding pan of the present invention;
FIG. 7 is a cross-sectional view of the air flow dispersion assembly of the present invention.
Wherein, 1-a dust removing device, 11-a dust removing box body, 12-a gas inlet I, 13-a gas outlet I, 14-an ultrasonic vibration mesh screen, 141-a supporting frame, 142-an upper layer filter mesh cloth, 143-a lower layer filter mesh cloth, 144-a supporting plate, 145-an ultrasonic vibrator, 146-a backwashing pipe, a 2-a denitration device, 21-a denitration box body, 22-a gas inlet II, 23-a gas outlet II, 24-a driving part, 241-a rotating disc, 242-a rotating shaft, 243-a positioning rod, 244-a driving motor, 25-a fixing part, 251-a fixing disc, 252-a liquid inlet pipe, 253-a liquid storage cavity, 254-a guide pipe, 255-a liquid outlet hole, 26-a fiber bundle, 27-a denitration liquid storage box, 28-a water pump I, a denitration device and a method, 29-a settling funnel, 210-a baffle plate, 211-a first return pipe, 212-a slag discharge port, 213-a discharge valve, 3-a desulfurizing device, 31-a desulfurizing box body, 32-an airflow dispersing component, 321-an air inlet pipe, 322-a conical disc, 323-a cavity, 324-an air outlet hole, 33-a spray pipe, 34-a desulfurizing liquid storage box and 35-a second water pump, 36-a third air outlet, 37-a second return pipe, 38-a demister, 4-an adsorption device, 41-an adsorption box body, 42-a third air inlet, 43-a fourth gas outlet, 44-an adsorption filler, 45-a baffle plate, 5-a plasma pretreatment device, 51-a shell, 52-a first connecting port, 53-a second connecting port and 54-a plasma electrode plate.
Detailed Description
As shown in fig. 1, an integrated equipment for desulfurization and denitrification of tar processing waste gas comprises a dust removal device 1, a denitrification device 2, a desulfurization device 3 and an adsorption device 4.
As shown in fig. 1, the dust removing device 1 includes a dust removing box 11, a first air inlet 12 and a first air outlet 13 respectively arranged at the bottom and the top of the dust removing box 11, and an ultrasonic vibration mesh screen 14 arranged inside the dust removing box 11 for intercepting and removing solid particles in the exhaust gas; as shown in fig. 2, the ultrasonic vibration mesh screen 14 includes a supporting frame 141 detachably connected in the dust removing box 11, the upper and lower surfaces of the supporting frame 141 are respectively connected with an upper layer filter mesh cloth 142 and a lower layer filter mesh cloth 143, one side of the supporting frame 141 is provided with a supporting plate 144 penetrating through the outer wall of the dust removing box 11, the supporting plate 144 is provided with an ultrasonic vibrator 145, the other side of the supporting frame 141 is provided with a back-washing pipe 146 penetrating through the outer wall of the dust removing box 11, and the back-washing pipe 146 is connected with an air pump for back-washing dust adhered to the lower layer filter mesh cloth 143. The ultrasonic vibration frequency that ultrasonic vibrator 145 sent makes upper filter screen cloth 142, lower floor's filter screen cloth 143 produce high-frequency vibration, not only does benefit to the collection dirt but also can prevent that the dust from adhering to improve dust removal filtration efficiency.
As shown in fig. 1, the denitration device 2 includes a denitration box 21, a second air inlet 22 connected to the first air outlet 13 is disposed at the bottom of the denitration box 21, a second air outlet 23 is disposed at the top of the denitration box 21, a denitration atomization assembly is installed inside the denitration box 21, the denitration atomization assembly includes a driving portion 24 and a fixing portion 25, as shown in fig. 3, 4, 5 and 6, the driving portion 24 includes a rotating disc 241, the rotating disc 241 is connected to an output shaft of a driving motor 244 located outside the denitration box 21 through a rotating shaft 242, a plurality of positioning rods 243 in concentric ring layers are disposed on the inner side surface of the rotating disc 241, the fixing portion 25 includes a fixing disc 251 disposed opposite to the rotating disc 241, the fixing disc 251 is fixed on the side wall of the denitration box 21 through an air inlet pipe 252, the air inlet pipe 252 is connected to a denitration liquid storage tank 27 through a first water pump 28, a liquid storage cavity 253 communicated with the air inlet pipe 252 is disposed inside the fixing disc 251, the inner side surface of the fixed disc 251 is provided with a plurality of concentric annular flow guide pipes 254, the flow guide pipes 254 are provided with a plurality of liquid outlet holes 255, the flow guide pipes 254 and the positioning rods 243 form concentric annular layers in a crossed manner, the positioning rods 243 are positioned on the outermost annular layer, and each positioning rod 243 and each flow guide pipe 254 are wound with a fiber bundle 26, so that a mutually crossed fiber bundle array is formed. When the first water pump 28 pumps the denitration liquid into the liquid storage cavity 253 and flows into the fiber bundle array through the liquid outlet holes 255 of the guide pipe 254, when the waste gas passes through the fiber bundle array, the driving motor 244 drives the rotating disc 241 and the positioning rod 243 wound with the fiber bundles 26 on the surface to rotate and rub against the fiber bundles 26 fixed on the inner surface of the fixed disc 251 in a relative rotating manner, so that the waste gas is in contact with the denitration liquid and is simultaneously washed away by the fiber bundle array in a rotating manner, the contact rate of the waste gas and the denitration liquid is greatly increased, and the denitration efficiency is improved.
As shown in fig. 1, the bottom of the denitration tank 21 is further provided with a settling funnel 29, the bottom of the settling funnel 29 is provided with a slag discharge port 212, and the slag discharge port 212 is provided with a discharge valve 213. The first water pump 28 is also connected with a first return pipe 211 through a three-way pipe, and the first return pipe 211 is positioned at the upper part of the settling hopper 29. Two flow baffle plates 210 are oppositely arranged on the inner side wall of the denitration box body 21, and the two flow baffle plates 210 are respectively positioned below the rotating disc 241 and the fixed disc 251 and are used for guiding airflow to flow to the fiber bundle array.
As shown in fig. 1, a plasma pretreatment device 5 is connected between the first gas outlet 13 and the second gas inlet 22, the plasma pretreatment device 5 includes a housing 51, a first connection port 52 and a second connection port 53 disposed at the upper and lower ends of the housing 51 for gas inlet and outlet, and two plasma electrode plates 54 oppositely disposed inside the housing 51, and the two plasma electrode plates 54 are respectively connected to the positive electrode and the negative electrode of an external high voltage pulse power supply. Through plasma to waste gas with the preliminary treatment, can reduce follow-up SOx/NOx control device 2's operating pressure, improve exhaust purification efficiency.
As shown in fig. 1, the desulfurization device 3 includes a desulfurization box 31, and an airflow dispersion assembly 32 located inside the desulfurization box 31 and connected to the second air outlet 23, as shown in fig. 7, the airflow dispersion assembly 32 includes an air inlet pipe 321 vertically connected to the inside of the desulfurization box 31, an upper end of the air inlet pipe 321 is connected to the second air outlet 23, a lower end of the air inlet pipe 321 extends to a lower portion of the desulfurization box 31 and is connected to a conical disc 322, the conical disc 322 has a downward opening and is internally provided with a cavity 323 communicated with the air inlet pipe 321, an inner surface of the conical disc 322 is provided with a plurality of air outlet holes 324 communicated with the cavity 323 for dispersing and refining the exhaust gas, and a surface of the conical disc 322 is a smooth layer for guiding the falling desulfurization solution. The waste gas is dispersed by the conical disc 322 to be convenient for fully contacting with the desulfurization solution, and the desulfurization efficiency is improved. A spray pipe 33 is further arranged at the top inside the desulfurization box body 31, the spray pipe 33 is connected with a desulfurization solution storage tank 34 positioned outside the desulfurization box body 31 through a second water pump 35, a third air outlet 36 is arranged at the top of the desulfurization box body 31, a demister 38 is arranged in the third air outlet 36, and the demister 38 is a commercially available baffling demister; the second water pump 35 is also connected with a second return pipe 37 positioned at the bottom of the desulfurization box body 31 through a three-way pipe and used for returning the used desulfurization waste liquid. In order to facilitate the blocking, filter screens may be provided in the second return pipe 37 and the first return pipe 211.
As shown in fig. 1, the adsorption apparatus 4 includes an adsorption box 41, the adsorption box 41 is provided with a gas inlet three 42 connected to the gas outlet three 36 and a gas outlet four 43 for discharging purified gas, and the adsorption box 41 is filled with an adsorption packing 44. A plurality of baffles 45 for partitioning the adsorption packing 44 are further provided in the adsorption case 41. The adsorption packing 44 may be activated carbon particles or silica gel particles for further adsorption purification of the exhaust gas.
The working method of the embodiment comprises the following steps: waste gas in the tar processing process is introduced into the dedusting box body 11 from the gas inlet I12, the waste gas passes through the ultrasonic vibration mesh 14 in the upward movement process, the ultrasonic vibrator 145 is started to enable the supporting frame 141 with the upper layer filter mesh 142 and the lower layer filter mesh 143 to vibrate in a high frequency mode, dust particles are intercepted below the lower layer filter mesh 143, the waste gas after dedusting and filtering is discharged through the gas outlet I13, and enters the shell 51 from the first connection port 52 of the plasma pretreatment device 5, the electrified plasma electrode plates 54 arranged at two sides in the shell 51 release plasma treatment to pretreat the toxic and harmful substances in the waste gas, the pretreated waste gas is discharged from the second connection port 53, and inside two 22 air inlets from denitrification facility 2 entered into denitration box 21, the waste gas after the preliminary treatment carries out the fibre bundle array through the denitration atomization component of top after two fender stream boards 210 that set up at the denitration box 21 inside wall carry out the water conservancy diversion.
The first water pump 28 is started to pump the denitration liquid from the denitration liquid storage box 27 to the liquid storage cavity 253 in the fixed disc 251, and the denitration liquid flows to the fiber bundle array through the liquid outlet holes 255 of the guide pipe 254, when the waste gas passes through the fiber bundle array, the driving motor 244 drives the rotating disc 241 and the positioning rod 243 wound with the fiber bundles 26 on the surface to rotate, and the rotating disc and the positioning rod rotate relative to the fiber bundles 26 fixed on the inner surface of the fixed disc 251, so that the waste gas is contacted with the denitration liquid and is simultaneously washed by the fiber bundle array in a rotating mode, the contact rate of the waste gas and the denitration liquid is greatly increased, and the denitration efficiency is improved. The denitration liquid that has contacted with waste gas takes reaction impurity to fall into precipitation funnel 29 together, and denitration liquid after precipitating filtration is carried to water pump 28 through a back flow pipe 211 and is retrieved, deposits impurity and piles up in precipitation funnel 29 bottom, and when needs clearance, open discharge valve 213 will deposit impurity and follow row cinder notch 212 discharge can.
And the denitrated waste gas is discharged from the second gas outlet 23, flows to the gas inlet pipe 321 of the desulfurization device 3 and the conical disc 322 at the bottom of the desulfurization device, is finally dispersed by the gas outlet holes 324 on the inner surface of the conical disc 322 and then enters the desulfurization box body 31, the second water pump 35 is opened to pump the desulfurization liquid to the spray pipe 33 from the desulfurization liquid storage box 34, the denitrated waste gas is subjected to spray desulfurization treatment, and the desulfurization waste liquid after being contacted with the waste gas is sent to the second water pump 35 through the second return pipe 37 for recycling.
The desulfurized waste gas is subjected to water mist removal by the demister 38 in the third gas outlet 36, enters the adsorption tank 41 from the third gas inlet 42, is subjected to adsorption post-treatment by the adsorption packing 44 between the baffle plates 45, and is discharged from the fourth gas outlet 43.
Claims (5)
1. A desulfurization and denitrification integrated equipment for tar processing waste gas is characterized by comprising a dust removal device (1), a denitrification device (2), a desulfurization device (3) and an adsorption device (4),
the dust removal device (1) comprises a dust removal box body (11), and a first air inlet (12) and a first air outlet (13) which are respectively arranged at the bottom and the top of the dust removal box body (11), wherein an ultrasonic vibration mesh screen (14) is arranged inside the dust removal box body (11) and is used for intercepting and removing solid particles in waste gas;
the denitration device (2) comprises a denitration box body (21), wherein a second air inlet (22) connected with the first air outlet (13) is arranged at the bottom of the denitration box body (21), a second air outlet (23) is arranged at the top of the denitration box body (21), a denitration atomization component is arranged inside the denitration box body (21), the denitration atomization component comprises a driving part (24) and a fixing part (25), the driving part (24) and the fixing part (25) are oppositely arranged, a fiber bundle array which is mutually crossed is arranged on the opposite surface, the driving part (24) is driven by a driving motor (244) outside the denitration box body (21) and rotates relative to the fixing part (25), the fixing part (25) is connected with a denitration liquid storage box (27) outside the denitration box body (21) through a first water pump (28) and is used for spraying denitration liquid into the fiber bundle array to be mutually contacted with waste gas, a settling funnel (29) is also arranged at the bottom of the denitration box body (21);
the desulfurization device (3) comprises a desulfurization box body (31), an airflow dispersion assembly (32) which is positioned inside the desulfurization box body (31) and connected with the second air outlet (23), and a spray pipe (33) which is positioned at the inner top of the desulfurization box body (31), wherein the spray pipe (33) is connected with a desulfurization solution storage box (34) which is positioned outside the desulfurization box body (31) through a second water pump (35), and the top of the desulfurization box body (31) is provided with a third air outlet (36);
the adsorption device (4) comprises an adsorption box body (41), a third air inlet (42) connected to the third air outlet (36) and a fourth gas outlet (43) for discharging purified gas are arranged on the adsorption box body (41), and an adsorption filler (44) is filled in the adsorption box body (41);
the ultrasonic vibration mesh screen (14) comprises a supporting frame (141) detachably connected in the dust removal box body (11), the upper surface and the lower surface of the supporting frame (141) are respectively connected with an upper layer of filter mesh cloth (142) and a lower layer of filter mesh cloth (143), one side of the supporting frame (141) is provided with a supporting plate (144) penetrating through the outer wall of the dust removal box body (11), the supporting plate (144) is provided with an ultrasonic vibrator (145), the other side of the supporting frame (141) is provided with a back-washing pipe (146) penetrating through the outer wall of the dust removal box body (11), and the back-washing pipe (146) is connected with an air pump;
the denitration device is characterized in that the driving part (24) comprises a rotating disc (241), the rotating disc (241) is connected with an output shaft of a driving motor (244) positioned outside the denitration box body (21) through a rotating shaft (242), a plurality of positioning rods (243) in a concentric ring layer are arranged on the inner side surface of the rotating disc (241), the fixing part (25) comprises a fixing disc (251) which is arranged opposite to the rotating disc (241), the fixing disc (251) is fixed on the side wall of the denitration box body (21) through a liquid inlet pipe (252), the liquid inlet pipe (252) is connected with a denitration liquid storage box (27) through a water pump I (28), a liquid storage cavity (253) communicated with the liquid inlet pipe (252) is arranged inside the fixing disc (251), a plurality of concentric annular guide pipes (254) are arranged on the inner side surface of the fixing disc (251), and a plurality of liquid outlet holes (255) are formed in the guide pipes (254), the honeycomb duct (254) and the positioning rod (243) form concentric ring layers in a crossed mode, the positioning rod (243) is located on the outermost ring layer, and fiber bundles (26) are wound on each positioning rod (243) and the honeycomb duct (254), so that a fiber bundle array which is crossed with each other is formed;
a flow baffle plate (210) is respectively arranged below the rotating disc (241) and the fixed disc (251), and the flow baffle plate (210) is fixed on the inner side wall of the denitration box body (21) and used for guiding airflow to flow to the fiber bundle array;
airflow dispersion subassembly (32) are including connecting perpendicularly intake pipe (321) inside desulfurization box (31), intake pipe (321) upper end with two (23) link to each other in the gas outlet, intake pipe (321) lower extreme extends to desulfurization box (31) lower part and is connected with conical disk (322), conical disk (322) opening is downward and inside be equipped with communicating cavity (323) of intake pipe (321), conical disk (322) internal surface be equipped with a plurality of with communicating venthole (324) in cavity (323) for with waste gas dispersion refines, conical disk (322) surface is used for the doctor solution of water conservancy diversion whereabouts for the smooth layer.
2. The integrated equipment for desulfurization and denitrification of exhaust gas from tar processing according to claim 1, wherein a first return pipe (211) is arranged between the upper part of the settling funnel (29) and the first water pump (28), a slag discharge port (212) is arranged at the bottom of the settling funnel (29), and a discharge valve (213) is arranged on the slag discharge port (212).
3. The integrated equipment for desulfurization and denitrification of waste gas generated in tar processing according to claim 1, wherein a second return pipe (37) connected with the second water pump (35) is arranged at the bottom of the desulfurization tank body (31).
4. The integrated equipment for desulfurization and denitrification of exhaust gas from tar processing according to claim 1, wherein a demister (38) is arranged in the third air outlet (36) of the desulfurization tank body (31).
5. The integrated equipment for desulfurization and denitrification of exhaust gas from tar processing according to claim 1, wherein a plurality of baffle plates (45) for separating the adsorption packing (44) are provided in the adsorption box body (41).
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| CN202010692050.6A CN111871075B (en) | 2020-07-17 | 2020-07-17 | Be used for tar processing waste gas SOx/NOx control integration equipment |
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| CN202010692050.6A CN111871075B (en) | 2020-07-17 | 2020-07-17 | Be used for tar processing waste gas SOx/NOx control integration equipment |
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| CN114191955A (en) * | 2021-12-09 | 2022-03-18 | 宋政译 | Coke oven gas desulfurizing tower |
| CN114950080B (en) * | 2022-05-29 | 2024-04-12 | 江苏俊华海洋工程装备有限公司 | High cleanliness desulfurization system suitable for ocean boats and ships |
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