CN113617186A - Waste gas treatment device and method during alkylphenol production - Google Patents
Waste gas treatment device and method during alkylphenol production Download PDFInfo
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- CN113617186A CN113617186A CN202111181193.1A CN202111181193A CN113617186A CN 113617186 A CN113617186 A CN 113617186A CN 202111181193 A CN202111181193 A CN 202111181193A CN 113617186 A CN113617186 A CN 113617186A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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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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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment device and a waste gas treatment method during alkylphenol production, which comprises a collection box, wherein one side of the collection box is sequentially communicated with a spraying box, a zeolite box, an incineration box and an adsorption box; a spraying mechanism and a stirring mechanism are arranged in the spraying box; the spraying mechanism comprises a spraying pipe arranged at the top in the spraying box and a plurality of spray heads arranged on the spraying pipe; one end of the spray pipe is connected with a water pipe; the water through pipe penetrates through the spraying box and is connected with a water pump; and the inlet of the water pump is connected with a water supply tank through a pipeline. The invention has the advantages of effectively treating waste gas and improving the treatment effect on the waste gas.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment device and method during alkylphenol production.
Background
Alkylphenols are a class of compounds produced by alkylation of phenols. In the production process of alkylphenol, a very small amount of phenol gas is often generated in the processes of pairing removal and fractionation, the collected waste gas is absorbed by activated carbon in the general treatment process and then is discharged by an exhaust funnel, the treatment mode is single, the purification of the waste gas usually cannot achieve the expected effect or cannot reach the standard at all, and the environmental protection is not facilitated.
Disclosure of Invention
The embodiment of the application solves the problem of single treatment mode of waste gas in the prior art by providing the waste gas treatment device and method during alkylphenol production, realizes effective treatment of waste gas, improves the treatment effect of waste gas, and avoids secondary pollution.
On one hand, the embodiment of the application provides a waste gas treatment device during alkylphenol production, which comprises a collection box, wherein one side of the collection box is sequentially communicated with a spraying box, a zeolite box, an incineration box and an adsorption box; a spraying mechanism and a stirring mechanism are arranged in the spraying box; the spraying mechanism comprises a spraying pipe arranged at the top in the spraying box and a plurality of spray heads arranged on the spraying pipe; one end of the spray pipe is connected with a water pipe; the water through pipe penetrates through the spraying box and is connected with a water pump; and the inlet of the water pump is connected with a water supply tank through a pipeline.
Further, the stirring mechanism comprises a stirring motor arranged at the bottom of the spraying box, a stirring shaft rotationally connected to the inside of the spraying box, and a first stirring part arranged on the stirring shaft; and an output shaft of the stirring motor is fixedly connected with the lower end of the stirring shaft.
Further, the first stirring part comprises a first sleeve fixed on the stirring shaft and a first stirring blade arranged on the first sleeve; the first stirring blades are arranged along the circumferential direction of the first sleeve at intervals.
Further, a second stirring part is arranged on the stirring shaft and positioned at the top of the stirring shaft; the second stirring part comprises a second sleeve fixed on the stirring shaft and a second stirring blade arranged on the second sleeve; the second stirring blades are arranged along the circumferential direction of the second sleeve at intervals.
Further, a driving mechanism is arranged at the top of the spraying box; the driving mechanism comprises a reciprocating screw rod rotationally connected to the top of the spraying box and a sliding seat in threaded connection with the reciprocating screw rod; the middle part of the spray pipe is fixedly connected with the sliding seat; the water service pipe comprises a hard pipe and a corrugated pipe, wherein one end of the hard pipe is fixed on the side wall of the spraying box, and the corrugated pipe is communicated with one end of the hard pipe; the other end of the hard pipe is communicated with a water outlet of the water pump; the other end of the corrugated pipe is communicated with the middle part of the spray pipe; the length direction of the corrugated pipe is consistent with the length direction of the reciprocating lead screw.
Furthermore, a linkage mechanism for driving the reciprocating screw rod to rotate is arranged on one side of the spraying box; the linkage mechanism comprises a fixed seat fixed on the outer side wall of the spraying box, a linkage shaft rotationally connected to the fixed seat, a first bevel gear arranged at the upper end of the linkage shaft, and a first driving wheel arranged at the lower end of the linkage shaft; the lower end of the stirring shaft penetrates through the bottom of the spraying box and is provided with a second driving wheel; the first driving wheel and the second driving wheel are sleeved with synchronous belts; one end of the reciprocating screw rod penetrates through the side wall of the spraying box and is fixed with a second bevel gear; the first bevel gear and the second bevel gear are meshed.
Furthermore, two first stirring parts are arranged at intervals along the height direction of the stirring shaft; and the two first stirring parts are close to the inner bottom of the spraying box.
Further, the first stirring blades of the two first stirring parts are obliquely arranged; the first stirring blades of the two first stirring parts are opposite in inclination direction.
Further, the second stirring blade is obliquely arranged; the second stirring blade and the first stirring blade adjacent to the second stirring blade are opposite in inclination direction.
On the other hand, the embodiment of the present application provides a method for treating waste gas in alkylphenol production, where the method includes the following steps: s1, exhausting, S11, introducing the waste gas to be treated into a collecting box; s12, stirring the collecting box by starting a stirring and mixing mechanism in the collecting box, and stirring and mixing the waste gas and the dust mixed in the waste gas together; s13, opening a discharge hole of the collecting box, and discharging waste gas in the collecting box into the spraying box; s2, spraying to remove impurities, S21, starting a water pump, spraying into the spraying box to form a water curtain, and bringing the impurities in the air into the solution in the water supply box at the bottom of the spraying box; s22, starting a stirring mechanism to stir the solution in the spraying box, so that part of waste gas which can be dissolved in the solution in the water supply box can be fully reacted; s23, the second stirring part is driven by the stirring shaft to stir the water curtain on the upper layer of the spraying box, so that the water splash is splashed to form a horizontal water curtain, and the impurity removal effect is improved; s3, zeolite adsorption, wherein the sprayed waste gas is physically adsorbed by a porous zeolite molecular sieve, so that organic matters contained in the waste gas are effectively removed; s4, burning, namely burning the waste gas adsorbed by the zeolite to pyrolyze part of the organic waste gas; s5, adsorbing by activated carbon, namely introducing the waste gas into an adsorption box, and adsorbing organic matters which are peculiar smell and difficult to degrade in the waste gas by a porous structure.
The technical scheme provided in the embodiment of the application at least has the following technical effects or advantages:
1. owing to adopted and sprayed the mechanism, so can spray the dust fall to waste gas through letting in the case that sprays with waste gas, reduce the impurity granule that contains in the waste gas, effectively solved the lower problem of exhaust-gas treatment effect when alkylphenol produces among the prior art, and then realized having improved the effect of carrying out high-efficient dust removal to waste gas when alkylphenol produces.
2. Owing to adopted rabbling mechanism, so can stir the solution that sprays the mechanism and spray in spraying the incasement and mix for the waste gas that gets into in the spraying case carries out the intensive mixing reaction, further improves the treatment effect to waste gas.
3. Owing to adopted first stirring portion and second stirring portion, stir the mixture through first stirring portion to being located the solution that sprays the bottom of the case portion accumulation, strengthen the abundant reaction that can dissolve in the partial waste gas of solution, the second stirring position is located the top of (mixing) shaft, can stir the water curtain that sprays the mechanism and spout down for the waste gas that is located to spray the incasement can further abundant reaction, improves and goes miscellaneous effect.
4. Owing to adopted link gear, can drive the (mixing) shaft through agitator motor and rotate, improve the exhaust-gas treatment effect of spraying the incasement, can also drive shower reciprocating motion through agitator motor, spray the waste gas of each position of spraying the incasement, reduce the granule impurity that contains in the waste gas, be favorable to the energy saving, improve the exhaust-gas treatment's of spraying the incasement multifunctionality.
Drawings
Fig. 1 is a schematic structural view of the whole in the embodiment of the present application;
FIG. 2 is a schematic view of the installation positions of the first pipeline, the second pipeline and the spraying box in the embodiment of the present application;
FIG. 3 is a schematic structural view of a linkage assembly in an embodiment of the present application;
FIG. 4 is a schematic view of the internal structure of the spray box in the embodiment of the present application;
FIG. 5 is an enlarged schematic view at A in FIG. 4;
in the figure: 1. a collection box; 11. a first conduit; 12. an air pump; 2. a spray box; 21. a second conduit; 22. a valve; 23. a limiting groove; 24. a U-shaped seat; 25. a water outlet pipe; 3. a zeolite tank; 31. a third pipeline; 4. an incineration box; 41. a fourth conduit; 5. an adsorption tank; 6. a spraying mechanism; 61. a shower pipe; 62. a spray head; 63. a water pipe; 631. a hard tube; 632. a bellows; 64. a water pump; 65. a water supply tank; 7. a drive mechanism; 71. a reciprocating screw; 72. a slide base; 73. a limiting block; 8. a stirring mechanism; 81. a stirring shaft; 82. a stirring motor; 83. a first stirring section; 831. a first sleeve; 832. a first stirring blade; 84. a second stirring section; 841. a second sleeve; 842. a second stirring blade; 9. a linkage mechanism; 91. a fixed seat; 92. a linkage shaft; 93. a first bevel gear; 94. a second bevel gear; 95. a first drive pulley; 96. a second transmission wheel; 97. and (4) a synchronous belt.
Detailed Description
The embodiment of the application discloses waste gas treatment device and method during alkylphenol production, spray case 2, zeolite case 3, burn case 4 and adsorption tank 5 through setting gradually, spray the waste gas of collecting in proper order, zeolite adsorbs, burn and active carbon adsorbs, combine through multiple processing mode and handle waste gas, the problem of single processing mode to waste gas among the prior art has been solved, effective processing waste gas has been realized, improve the treatment effect to waste gas, avoid causing secondary pollution.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Referring to fig. 1 and 2, a waste gas treatment device during alkylphenol production comprises a collection box 1, wherein the collection box 1 is a container for collecting waste gas generated in alkylphenol production, one side of the collection box 1 is sequentially communicated with a spray box 2, a zeolite box 3, an incineration box 4 and an adsorption box 5, the collection box 1 is communicated with the spray box 2 through a first pipeline 11, one end of the first pipeline 11 is located at the upper end of the collection box 1, a safety valve is installed at the position of the first pipeline 11, and the other end of the first pipeline 11 is communicated with the bottom of the spray box 2. The spraying box 2 is communicated with the zeolite box 3 through a second pipeline 21, one end of the second pipeline 21 is communicated with the top of the spraying box 2, and the other end of the second pipeline 21 is communicated with one side of the zeolite box 3. The zeolite box 3 is communicated with the incineration box 4 through a third pipeline 31, one end of the third pipeline 31 is communicated with one side of the zeolite box 3 far away from the spraying box 2, and the other end of the third pipeline 31 is communicated with one side of the incineration box 4. The incineration tank 4 is communicated with the adsorption tank 5 through a fourth pipeline 41, one end of the fourth pipeline 41 is communicated with one side of the incineration tank 4 far away from the zeolite tank 3, and the other end of the fourth pipeline 41 is communicated with one side of the adsorption tank 5. An air suction pump 12 is installed on each of the first pipe 11 and the second pipe 21 for transferring the exhaust gas. Valves 22 are installed at the position of the second pipeline 21 far away from the incineration box 4 and the position of the fourth pipeline 41 close to the incineration box 4, and in the process of treating the waste gas, the two valves 22 are controlled to be in a normally open state, so that the continuous operation of the waste gas treatment is kept. After exhaust-gas treatment, when need not use this exhaust-gas treatment device, clear up each mechanism of exhaust-gas treatment device, control two valves 22 and be normally closed state, through burning the heating in the case 4 for the heat current lets in to zeolite case 3 in, heats the porous zeolite molecular sieve in zeolite case 3, makes the organic matter in the waste gas of adsorption in zeolite case 3 can the desorption, conveniently clears up in zeolite case 3, the reuse of zeolite case 3 of being convenient for. Through multiple mode combination to waste gas treatment, improve exhaust-gas treatment efficiency, and then improve purifying effect.
Referring to fig. 3 and 4, the spraying box 2 is rectangular, the spraying mechanism 6, the driving mechanism 7, the stirring mechanism 8 and the linkage mechanism 9 are installed in the spraying box 2, the spraying mechanism 6 and the stirring mechanism 8 can fully react waste gas introduced into the spraying box 2, the driving mechanism 7 is used for driving the spraying mechanism 6 to reciprocate in the horizontal direction along the spraying box 2, and the linkage mechanism 9 is connected with the driving mechanism 7 and the stirring mechanism 8, so that energy is saved, and the waste gas treatment effect is improved.
Referring to fig. 4 and 5, the shower mechanism 6 includes a shower pipe 61, a shower head 62, a water pipe 63, a water pump 64, and a water supply tank 65, the shower pipe 61 is horizontally disposed at an inner top portion of the shower tank 2, and a longitudinal direction of the shower pipe 61 coincides with a longitudinal direction of the shower tank 2. The plurality of spray heads 62 are uniformly distributed along the circumferential direction of the spray pipe 61, and the exhaust gas in the spray box 2 can be sprayed in multiple directions for dust reduction. The feed water tank 65 is filled with a solution capable of reacting with the waste gas, the feed water tank 65 is fixed on one side of the spray tank 2, the inlet of the water pump 64 is communicated with the side wall of the feed water tank 65 through a pipeline, the water service pipe 63 comprises a hard pipe 631 and a corrugated pipe 632, one end of the hard pipe 631 is fixedly connected with the outlet of the water pump 64, the other end of the hard pipe 631 is fixedly installed on the side wall of the spray tank 2, one end of the corrugated pipe 632 is communicated with the end part of the hard pipe 631, which is fixed on the side wall of the spray tank 2, and the other end of the corrugated pipe 632 penetrates through the side wall of the spray tank 2 and is communicated with the middle part of the spray pipe 61. The length direction of the corrugated tube 632 is perpendicular to the length direction of the shower pipe 61.
Referring to fig. 4 and 5, the driving mechanism 7 includes a reciprocating lead screw 71 and a slide seat 72, the reciprocating lead screw 71 is rotatably connected to the inner top of the spray box 2, the length direction of the corrugated pipe 632 is consistent with the length direction of the reciprocating lead screw 71, the corrugated pipe 632 and the reciprocating lead screw 71 are located on the same vertical plane, a limit groove 23 is formed in the inner top wall of the spray box 2, a limit block 73 is fixed on the upper end surface of the slide seat 72, the limit block 73 is slidably connected in the limit groove 23, and the lower end surface of the slide seat 72 is fixedly connected with the upper surface of the spray pipe 61 and located in the middle position of the spray pipe 61. Through the rotation of the reciprocating screw rod 71, the sliding seat 72 can be driven to slide along the length direction of the reciprocating screw rod 71, and then the spraying pipe 61 can be driven to slide along the length direction of the reciprocating screw rod 71, so that the inside of the spraying box 2 is sprayed on a large scale, and the waste gas treatment effect is improved.
Referring to fig. 2, 3 and 4, the stirring mechanism 8 includes a stirring shaft 81, a stirring motor 82, a first stirring portion 83 and a second stirring portion 84, the U-shaped seat 24 is fixedly installed at the outer bottom of the spray box 2, the stirring shaft 81 is rotatably connected to the center of the spray box 2, the top of the stirring shaft 81 is spaced from the lower surface of the corrugated pipe 632, the bottom of the stirring shaft 81 penetrates through the bottom of the spray box 2 and is rotatably connected to the inner side wall of the U-shaped seat 24, the stirring motor 82 is fixedly installed at the outer bottom of the U-shaped seat 24, and the output shaft of the stirring motor 82 is fixedly connected to the bottom of the stirring shaft 81. First stirring portion 83 and second stirring portion 84 are all fixedly mounted on stirring shaft 81, and first stirring portion 83 is provided with two, and two first stirring portions 83 are close to the interior bottom of spray box 2, and two first stirring portions 83 interval sets up. The second stirring section 84 is located at the top position of the stirring shaft 81. The interval between the two first stirring parts 83 is smaller than the interval between the uppermost first stirring part 83 and the second stirring part 84. First stirring portion 83 includes first sleeve 831, first stirring leaf 832, and on first sleeve 831 cover was established and was fixed in (mixing) shaft 81, first stirring leaf 832 was provided with a plurality ofly along the circumference interval of first sleeve 831, first stirring leaf 832 and first sleeve 831 fixed connection. The second stirring portion 84 includes a second sleeve 841 and a second stirring blade 842, the second sleeve 841 is sleeved on and fixed to the stirring shaft 81, and the second stirring blade 842 is provided with a plurality of stirring blades along the circumferential direction of the second sleeve 841. The second stirring blade 842 is fixedly connected with the second sleeve 841. The first stirring blade 832 and the second stirring blade 842 are both inclined, and the inclination directions of the stirring blades of the two first stirring parts 83 are opposite. The second agitating blade 842 and the first agitating blade 832 adjacent thereto are inclined in opposite directions. The first stirring vane 832 located at the lowermost position is inclined toward the top of the shower box 2. Bottom fixed mounting at spray box 2 has outlet pipe 25, and outlet pipe 25 has switch valve, and when the hydrops in spray box 2 reached certain height, can reduce the solution height of scraping up in spray box 2 through opening switch valve for two first stirring portions 83 can soak all the time in the hydrops that spray box 2, and second stirring portion 84 is located the top that sprays box 2 hydrops. Can stir the waste gas that is located the hydrops of spraying 2 bottoms of case and process hydrops through first stirring portion 83, dissolve partial waste gas. The solution sprayed by the spray pipe 61 is agitated by the second stirring portion 84 to improve the effect of spraying the impurities in the exhaust gas located above the spray tank 2.
Referring to fig. 3 and 4, the linkage mechanism 9 is mounted on the shower box 2 and drives the reciprocating screw 71 to rotate. The linkage mechanism 9 comprises a fixed seat 91, a linkage shaft 92, a first bevel gear 93, a second bevel gear 94, a first driving wheel 95, a second driving wheel 96 and a synchronous belt 97, the fixed seat 91 is fixedly arranged on one side of the spraying box 2 close to the water tank, two fixed seats 91 are arranged at intervals along the height direction of the spraying box 2, the linkage shaft 92 is vertically arranged, the linkage shaft 92 is rotatably connected to the two fixed seats 91, the first bevel gear 93 is fixed at the upper end of the linkage shaft 92, one end of a reciprocating screw 71 penetrates through the spraying box 2 and is fixedly connected with the second bevel gear 94, the first bevel gear 93 is meshed with the second bevel gear 94, the first driving wheel 95 is fixedly arranged at the lower end of the linkage shaft 92, the second driving wheel 96 is fixedly arranged on the stirring shaft 81, the second driving wheel 96 is positioned inside the U-shaped seat 24, the first driving wheel 95 and the second driving wheel 96 are positioned on the same horizontal plane, the synchronous belt 97 is sleeved on the first driving wheel 95 and the second driving wheel 96, the stirring shaft 81 is driven to rotate by the stirring motor 82, the second transmission wheel 96 can be driven to rotate, the first transmission wheel 95 is driven to rotate under the action of the synchronous belt 97, the linkage shaft 92 is enabled to rotate, the first bevel gear 93 and the second bevel gear 94 are meshed with each other, the reciprocating lead screw 71 can be driven to rotate, when the reciprocating lead screw 71 rotates, the sliding seat 72 in threaded connection with the reciprocating lead screw 71 moves along the length direction of the reciprocating lead screw 71, when the sliding seat 72 moves to one end of the reciprocating lead screw 71, the reciprocating motion of the spraying pipe 61 is driven, and the stirring shaft 81 can be driven to drive the first stirring part 83 and the second stirring part 84 to rotate.
Referring to fig. 1 to 5, on the other hand, the embodiment of the present application discloses a method for treating exhaust gas during alkylphenol production, and specific steps of the treatment method are as follows.
S1, exhaust through the waste gas produced after the alkylphenol is prepared in the production that will collect in collecting box 1, be convenient for carry out effective processing to this waste gas, install the stirring mixing mechanism of miscellany in collecting box 1, stirring mixing mechanism is including being fixed in the hybrid motor at collecting box 1 top, rotate the pivot of connecting in collecting box 1, be fixed in the epaxial blade of commentaries on classics, hybrid motor' S output shaft and the upper end fixed connection of pivot.
S11, collecting the waste gas generated in the process of producing alkylphenol into the collection box 1.
S12, stirring the collecting box 1 by starting a stirring and mixing mechanism in the collecting box 1, and stirring and mixing the waste gas and the dust mixed in the waste gas together, thereby being convenient for removing the impurities and the waste gas in the collecting box 1.
S13, opening the discharge hole of the collecting box 1, discharging the waste gas in the collecting box 1 to the spraying box 2 by starting the corresponding air pump 12, and enabling the waste gas to enter the spraying box 2 from the bottom of the spraying box 2, so that the gas or impurities dissolved in the solution in the water supply box 65 in the waste gas can be cleaned, and the waste gas can be subjected to centralized treatment in the following process.
And S2, spraying to remove impurities, removing impurities such as dust particles contained in the waste gas by spraying to remove impurities, and effectively treating part of the waste gas which can be dissolved in the solution in the water supply tank 65.
S21, starting the water pump 64, extracting the solution from the water supply tank 65 through the water pump 64, spraying the solution into the spray tank 2 through the plurality of spray heads 62 on the spray pipe 61 to form a water curtain, and bringing the impurities in the air into the solution in the water supply tank 65 at the bottom of the spray tank 2.
S22, start rabbling mechanism 8, shower nozzle 62 sprays the particulate matter of suspension, and the solution accumulation that sprays is in the bottom of spraying case 2, drives two sets of first stirring leaf 832 through (mixing) shaft 81 and stirs the hydrops that lie in spraying case 2 bottom for when waste gas gets into through spraying case 2 bottom, can dissolve in the partial waste gas of supply tank 65 interior solution and carry out the abundant reaction, degradation partial waste gas.
S23 and the second stirring portion 84 are driven by the stirring shaft 81 to stir the water curtain on the upper layer of the spray box 2, so that the water spray sprayed by the spray head 62 splashes to form the water curtain with irregular shape, thereby cleaning the waste gas in the spray box 2 in a large range, and further improving the impurity removal effect in the spray box 2.
And S3, adsorbing the zeolite, pumping the waste gas into the zeolite box 3 through the air pump 12 on the second pipeline 21 after the spraying is completed, and physically adsorbing the waste gas through the porous zeolite molecular sieve to effectively remove organic matters contained in the waste gas.
S4, burning, further treating the waste gas, and burning the waste gas adsorbed by the zeolite to pyrolyze part of organic waste gas so as to effectively reduce harmful substances in the waste gas.
S5, adsorbing by activated carbon, introducing the waste gas into the adsorption box 5, and adsorbing organic matters which have peculiar smell and are difficult to degrade in the waste gas by the waste gas through a porous structure, thereby improving the waste gas treatment effect.
And S6, discharging the treated exhaust gas.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can substitute or change the technical solution and its concept of the present application within the technical scope disclosed in the present application, and shall be covered by the scope of the present application.
Claims (10)
1. A waste gas treatment device during alkylphenol production comprises a collection box (1), and is characterized in that one side of the collection box (1) is sequentially communicated with a spraying box (2), a zeolite box (3), an incineration box (4) and an adsorption box (5);
a spraying mechanism (6) and a stirring mechanism (8) are arranged in the spraying box (2);
the spraying mechanism (6) comprises a spraying pipe (61) arranged at the inner top of the spraying box (2) and a plurality of spray heads (62) arranged on the spraying pipe (61);
one end of the spray pipe (61) is connected with a water pipe (63); the water pipe (63) penetrates through the spraying box (2) and is connected with a water pump (64); the inlet of the water pump (64) is connected with a water supply tank (65) through a pipeline.
2. The waste gas treatment device in the production of alkylphenol of claim 1, characterized in that the stirring mechanism (8) comprises a stirring motor (82) arranged at the bottom of the spray tank (2), a stirring shaft (81) rotatably connected to the inside of the spray tank (2), and a first stirring part (83) arranged on the stirring shaft (81);
and an output shaft of the stirring motor (82) is fixedly connected with the lower end of the stirring shaft (81).
3. The exhaust gas treatment device according to claim 2, wherein the first stirring section (83) includes a first sleeve (831) fixed to the stirring shaft (81), and a first stirring blade (832) provided on the first sleeve (831); the first stirring vanes (832) are arranged in plurality at intervals along the circumferential direction of the first sleeve (831).
4. An exhaust gas treatment apparatus in the production of alkylphenol as claimed in claim 3, wherein a second stirring portion (84) is provided on the stirring shaft (81) at a top of the stirring shaft (81);
the second stirring part (84) comprises a second sleeve (841) fixed on the stirring shaft (81) and a second stirring blade (842) arranged on the second sleeve (841); the second stirring blades (842) are arranged along the circumferential direction of the second sleeve (841) at intervals.
5. The exhaust gas treatment device for alkylphenol production as claimed in claim 2, wherein a drive mechanism (7) is provided at the top of the shower tank (2);
the driving mechanism (7) comprises a reciprocating screw rod (71) which is rotatably connected to the top of the spraying box (2), and a sliding seat (72) which is in threaded connection with the reciprocating screw rod (71);
the middle part of the spray pipe (61) is fixedly connected with the sliding seat (72); the water service pipe (63) comprises a hard pipe (631) with one end fixed on the side wall of the spraying box (2) and a corrugated pipe (632) communicated with one end of the hard pipe (631);
the other end of the hard pipe (631) is communicated with a water outlet of the water pump (64); the other end of the corrugated pipe (632) is communicated with the middle part of the spray pipe (61); the length direction of the corrugated pipe (632) is consistent with the length direction of the reciprocating screw rod (71).
6. The waste gas treatment device in the production of alkylphenol of claim 5, characterized in that one side of the spray box (2) is provided with a linkage mechanism (9) for driving the reciprocating screw rod (71) to rotate;
the linkage mechanism (9) comprises a fixed seat (91) fixed on the outer side wall of the spraying box (2), a linkage shaft (92) rotatably connected to the fixed seat (91), a first bevel gear (93) arranged at the upper end of the linkage shaft (92), and a first driving wheel (95) arranged at the lower end of the linkage shaft (92);
the lower end of the stirring shaft (81) penetrates through the bottom of the spraying box (2) and is provided with a second driving wheel (96); a synchronous belt (97) is sleeved on the first transmission wheel (95) and the second transmission wheel (96);
one end of the reciprocating screw rod (71) penetrates through the side wall of the spraying box (2) and is fixed with a second bevel gear (94); the first bevel gear (93) and the second bevel gear (94) are engaged.
7. An exhaust gas treatment apparatus in the production of alkylphenols according to claim 3, wherein two of said first stirring section (83) are provided at an interval in the height direction of said stirring shaft (81); the two first stirring parts (83) are close to the inner bottom of the spraying box (2).
8. The exhaust gas treatment device according to claim 7, wherein the first stirring vanes (832) of both of the first stirring sections (83) are disposed obliquely; the first stirring vanes (832) of the two first stirring parts (83) are inclined in opposite directions.
9. The exhaust gas treatment apparatus for alkylphenol production of claim 4, wherein the second stirring vane (842) is disposed obliquely; the second stirring blade (842) and the first stirring blade (832) adjacent to the second stirring blade (842) are inclined in opposite directions.
10. An exhaust gas treatment method in the production of alkylphenol by using the exhaust gas treatment device according to any one of claims 1 to 9, characterized by comprising the steps of:
s1, exhausting
S11, introducing the waste gas to be treated into the collecting box (1);
s12, stirring the collecting box (1) by starting a stirring and mixing mechanism in the collecting box (1), and stirring and mixing the waste gas and the dust mixed in the waste gas together;
s13, opening a discharge hole of the collecting box (1), and discharging waste gas in the collecting box (1) into the spraying box (2);
s2, spraying to remove impurities
S21, starting a water pump (64), spraying the water in the spraying box (2) to form a water curtain, and bringing impurities in the air into the solution in the water supply box (65) at the bottom of the spraying box (2);
s22, starting a stirring mechanism (8) to stir the solution in the spraying box (2) so that part of waste gas dissolved in the solution in the water supply box (65) is fully reacted;
s23, the second stirring part (84) is driven by the stirring shaft (81) to stir the water curtain on the upper layer of the spraying box (2), so that the water splash is splashed to form a horizontal water curtain, and the impurity removal effect is improved;
s3, zeolite adsorption, wherein the sprayed waste gas is physically adsorbed by a porous zeolite molecular sieve, so that organic matters contained in the waste gas are effectively removed;
s4, burning, namely burning the waste gas adsorbed by the zeolite to pyrolyze part of the organic waste gas;
s5, adsorbing by activated carbon, namely introducing the waste gas into an adsorption box (5), and adsorbing organic matters which are peculiar smell and difficult to degrade in the waste gas by a porous structure.
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