CN114452781B - Continuous filler absorption tower and absorption process thereof - Google Patents
Continuous filler absorption tower and absorption process thereof Download PDFInfo
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- CN114452781B CN114452781B CN202210149394.1A CN202210149394A CN114452781B CN 114452781 B CN114452781 B CN 114452781B CN 202210149394 A CN202210149394 A CN 202210149394A CN 114452781 B CN114452781 B CN 114452781B
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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
- B01D53/14—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
- B01D53/1406—Multiple stage absorption
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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
- B01D53/1412—Controlling the absorption process
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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
- B01D53/185—Liquid distributors
Abstract
The invention relates to the technical field of filler absorption, and discloses a continuous filler absorption tower, which comprises an absorption tower body, an air inlet pipe and an air outlet pipe; the first material pressing layer, the first supporting layer, the bearing body, the second material pressing layer and the second supporting layer are sequentially distributed, and filler is arranged between the first material pressing layer and the first supporting layer and between the second material pressing layer and the second supporting layer; an air duct; the first spray pipe and the first liquid outlet pipe are provided with a first pump body; the second spray pipe and the second liquid outlet pipe are provided with a second pump body; the top of the upper circulating tank is lower than the bottom of the first liquid outlet pipe; new fluid inflow and outflow tubes; the device comprises a first lower-layer circulating tank and a second lower-layer circulating tank, wherein a first discharge pipe and a first control valve are arranged on the first lower-layer circulating tank, and a second discharge pipe and a second control valve are arranged on the second lower-layer circulating tank; the first control mechanism, the second control mechanism and the third control mechanism. The invention can improve the utilization rate of the absorption liquid.
Description
Technical Field
The invention relates to the technical field of filler absorption, in particular to a continuous filler absorption tower and an absorption process thereof.
Background
The absorption tower is a device for realizing the absorption operation. The contact forms of gas and liquid phases are classified into three types. The first type is a plate column, a bubbling absorption column and a stirring bubbling absorption column in which gas is dispersed in a liquid phase in the form of bubbles; the second category is sprayers, venturi tubes, spray towers where the liquid is dispersed in the gas phase in the form of droplets; the third category is a packed absorber and a falling film absorber in which a liquid contacts a gas phase in a film-like motion. The flow mode of the gas phase and the liquid phase in the tower can be countercurrent or cocurrent. In general, countercurrent operation is adopted, the absorbent is added from the top of the tower and flows from top to bottom to contact with gas flowing from bottom to top, the liquid absorbing the absorbent is discharged from the bottom of the tower, and the purified gas is discharged from the top of the tower.
The packing absorption tower mainly comprises a tower body, wherein the bottom of the tower body is provided with an exhaust gas input pipe, the top of the tower body is provided with an exhaust gas output pipe, one or a plurality of layers of packing are arranged in the tower body, the bottom of each layer of packing is provided with a packing support layer, and the top of each layer of packing is provided with a packing compacting layer; a spray head is arranged above each layer of filler and is used for downwards spraying liquid for absorbing toxic and harmful components in the waste gas; in the absorption process, liquid falls downwards, gas flows upwards, and in the process of gas-liquid relative flow, the absorption of toxic and harmful substances in the gas is realized, meanwhile, a foam removing device is arranged at the top of the tower, and a pipeline from which the absorption liquid flows out is arranged at the bottom of the tower.
Disclosure of Invention
The invention aims to provide a continuous filler absorption tower and an absorption process thereof, aiming at achieving the effect of improving the utilization rate of absorption liquid.
The technical aim of the invention is realized by the following technical scheme: the continuous filler absorption tower comprises an absorption tower body, wherein the bottom of the absorption tower body is communicated with an air inlet pipe, and the top of the absorption tower body is communicated with an air outlet pipe;
the first material pressing layer, the first supporting layer, the bearing body, the second material pressing layer and the second supporting layer are sequentially distributed on the inner wall of the absorption tower body from top to bottom, fillers are respectively arranged between the first material pressing layer and the first supporting layer and between the second material pressing layer and the second supporting layer, and the outer wall of the bearing body is connected with the inner wall of the absorption tower body;
the gas guide pipe penetrates through the bearing body and is used for guiding gas below the bearing body to the position above the bearing body;
the top of the first spray pipe is higher than the first pressing layer, the top of the first liquid outlet pipe is communicated with the bottom of the bearing body, and a first pump body is arranged on the first spray pipe;
the top of the second spray pipe is positioned between the bearing body and the second pressing layer, the second liquid outlet pipe is communicated with the bottom of the absorption tower body, and a second pump body is arranged on the second spray pipe;
The first spray pipe and the first liquid outlet pipe are communicated with the upper circulating tank, and the top of the upper circulating tank is lower than the bottom of the first liquid outlet pipe;
a new liquid inflow pipe and an outflow pipe which are respectively communicated with the top and the bottom of the upper circulation tank;
the device comprises a first lower circulation tank and a second lower circulation tank, wherein the first lower circulation tank and the second lower circulation tank are lower than the upper circulation tank, a first discharge pipe is arranged at the bottom of the first lower circulation tank, a first control valve is arranged on the first discharge pipe, a second discharge pipe is arranged at the bottom of the second lower circulation tank, and a second control valve is arranged on the second discharge pipe;
the first control mechanism is used for controlling the second spraying pipe to be communicated with the first lower-layer circulating tank or the second lower-layer circulating tank, the second control mechanism is used for controlling the second liquid outlet pipe to be communicated with the first lower-layer circulating tank or the second lower-layer circulating tank, the third control mechanism is used for controlling the outflow pipe to be communicated with the first lower-layer circulating tank or the second lower-layer circulating tank, and the first control mechanism, the second control mechanism and the third control mechanism all comprise a first state and a second state;
When the first spray pipe is in the first state, the second spray pipe and the second liquid outlet pipe are both communicated with the second lower circulation tank, and the outflow pipe is communicated with the first lower circulation tank;
when the second spray pipe is in the second state, the second spray pipe and the second liquid outlet pipe are communicated with the first lower circulation tank, and the outflow pipe is communicated with the second lower circulation tank.
The invention is further provided with: the device also comprises a first communicating pipe, a second communicating pipe, a third communicating pipe, a fourth communicating pipe, a fifth communicating pipe and a sixth communicating pipe, wherein the fifth communicating pipe and the sixth communicating pipe are S-shaped or Z-shaped;
the first control mechanism comprises a first rotating shell and a first rotating body which is rotationally connected in the first rotating shell, a first communication groove is formed in the side part penetrating through the first rotating body, the second spray pipe, the first communication pipe and the second communication pipe are all communicated with the first rotating shell, the communication positions of the second spray pipe, the first communication pipe and the second communication pipe, which are communicated with the first rotating shell, are uniformly distributed on the first rotating shell in a circumferential shape, and a first operating handle extending out of the first rotating shell is arranged in the middle of the first rotating body;
The second control mechanism comprises a second rotating shell and a second rotating body which is rotationally connected in the second rotating shell, a second communication groove is formed in the side part penetrating through the second rotating body, the second liquid outlet pipe, the third communication pipe and the fourth communication pipe are all communicated with the second rotating shell, the communication parts of the second liquid outlet pipe, the third communication pipe and the fourth communication pipe, which are communicated with the second rotating shell, are uniformly distributed on the second rotating shell in a circumferential shape, and a second operating handle extending out of the second rotating shell is arranged in the middle of the second rotating body;
the third control mechanism comprises a third rotating shell and a third rotating body which is rotationally connected in the third rotating shell, a third communication groove is formed in the side part penetrating through the third rotating body, the outflow pipe, the fifth communication pipe and the sixth communication pipe are all communicated with the third rotating shell, the communication parts of the outflow pipe, the fifth communication pipe and the sixth communication pipe and the third rotating shell are uniformly distributed on the third rotating shell in a circumferential shape, and a third operation handle extending out of the first rotating shell is arranged in the middle of the third rotating body;
When the first circulating tank is in the first state, two ends of the first communicating groove are respectively communicated with the second spraying pipe and the first communicating pipe, two ends of the second communicating groove are respectively communicated with the second liquid outlet pipe and the third communicating pipe, two ends of the third communicating groove are respectively communicated with the outflow pipe and the fifth communicating pipe, the bottom of the first communicating pipe is communicated with the bottom of the second lower circulating tank, the bottom of the third communicating pipe is positioned in an opening of the second lower circulating tank, and the bottom of the fifth communicating pipe is positioned in an opening of the first lower circulating tank;
when the first communicating tank is in the second state, two ends of the first communicating tank are respectively communicated with the second spraying pipe and the second communicating pipe, two ends of the second communicating tank are respectively communicated with the second liquid outlet pipe and the fourth communicating pipe, two ends of the third communicating tank are respectively communicated with the outflow pipe and the sixth communicating pipe, the bottom of the second communicating pipe is communicated with the bottom of the first lower-layer circulating tank, the bottom of the fourth communicating pipe is positioned in an opening of the first lower-layer circulating tank, and the bottom of the sixth communicating pipe is positioned in an opening of the second lower-layer circulating tank.
The invention is further provided with: the second rotating shell is positioned between the first rotating shell and the third rotating shell, a first bulge and a second bulge are arranged on the outer wall of the second rotating shell, a termination rod perpendicular to the first operating handle is arranged on the first operating handle, and the termination rod can be abutted against the first bulge or the second bulge by rotating the first rotating body;
the two ends of the second operating handle are respectively connected with the first rotating body and the second rotating body, the two ends of the third operating handle are respectively connected with the second rotating body and the third rotating body, and the axes of the first operating handle, the second operating handle and the third operating handle are all collinear.
The invention is further provided with: temporary storage tanks with upward openings are arranged on the inner walls of the first lower circulation tank and the second lower circulation tank, and the bottom ends of the fifth communicating pipe and the sixth communicating pipe are respectively positioned above the two temporary storage tanks;
the bottom of the temporary storage tank is provided with an inverted J-shaped temporary storage pipe, the bottom of the temporary storage tank is lower than the bottom of the temporary storage tank, the top of the temporary storage pipe is bent downwards, and an opening at the top of the temporary storage pipe is positioned in the opening of the temporary storage tank and higher than the inner wall of the bottom of the temporary storage tank.
The invention is further provided with: the air duct is provided with a plurality of, the support body is the ascending cover form of opening, be provided with the gas dispersing shell in the inner chamber of support body level, a plurality of gas dispersing holes have been seted up to the bottom of gas dispersing shell, the top of air duct be the form of buckling with the top of gas dispersing shell communicates with each other, the outer wall of gas dispersing shell with set for the distance between the inner wall of support body.
The invention also discloses a process for absorption by using the continuous packing absorption tower, which comprises the following steps:
s1, enabling waste gas to enter an absorption tower body from an air inlet pipe, starting a first pump body and a second pump body, enabling liquid in an upper circulation tank to be pumped into the tail end of a first spray pipe by the first pump body, enabling the liquid to fall in a dispersed mode under the action of a plurality of spray heads distributed horizontally, enabling the liquid in a second lower circulation tank to be pumped into the tail end of a second spray pipe by the second pump body, and enabling the liquid to fall in a dispersed mode under the action of the plurality of spray heads distributed horizontally;
s2, after the waste gas sequentially passes through the second supporting layer, the filler at the lower layer and the second pressing layer, the waste gas passes through the bearing body through the air duct, and in the process, the gas and the liquid in the second spray pipe move oppositely;
S3, the gas continues to upwards, passes through the first supporting layer, the upper filler, the first pressing layer and the defoaming device in sequence, and is discharged to the outside through the gas outlet pipe;
wherein, the liquid crystal display device comprises a liquid crystal display device,
the fresh liquid continuously flows into the clean absorption liquid in the inflow pipe, and the outflow pipe continuously flows out of the absorption liquid in the upper circulating tank;
when the second lower circulation tank is adsorbing, the outflow pipe guides the liquid into the first lower circulation tank;
the outflow pipe introduces the liquid into the second lower circulation tank when the first lower circulation tank is performing adsorption.
The beneficial effects of the invention are as follows: when waste gas is treated, firstly, the waste gas enters an absorption tower body from an air inlet pipe, a first pump body and a second pump body are started, the first pump body pumps liquid in an upper circulation tank to the tail end of a first spray pipe and dispersedly drops under the action of a plurality of spray heads distributed horizontally, and the second pump body pumps liquid in a second lower circulation tank to the tail end of a second spray pipe and dispersedly drops under the action of a plurality of spray heads distributed horizontally;
then, the waste gas passes through the bearing body through the gas guide pipe after sequentially passing through the second supporting layer, the filler at the lower layer and the second pressing layer, and in the process, the gas and the liquid in the second spray pipe move oppositely; the gas continues to upwards, and is discharged to the outside through the gas outlet pipe after sequentially passing through the first supporting layer, the upper packing, the first pressing layer and the foam removing device, wherein the packing materials at the upper side and the lower side are common packing materials in the market, can be regular packing materials or bulk packing materials, and can also be common ceramic corrugation, plastic corrugation or silk screen corrugation and the like according to the condition of waste gas;
The new liquid inflow pipe continuously flows in clean absorption liquid, the outflow pipe continuously flows out of the absorption liquid in the upper circulating tank, and the diameters, the pressures, the positions and the like of the new liquid inflow pipe and the outflow pipe are set so that the inflow speed of the new liquid inflow pipe is close to or equal to the outflow speed of the outflow pipe;
when the second lower circulation tank is in adsorption (the first lower circulation tank is in an emptying and filling waiting machine state), the outflow pipe guides liquid into the first lower circulation tank, and when the absorption liquid in the second lower circulation tank is saturated, the absorption liquid is controlled by the first control mechanism, the second control mechanism and the third control mechanism to be regulated to a second state, the first lower circulation tank is used for adsorbing the lower layer, the second control valve (preferably an electric control valve) is opened to discharge the saturated absorption liquid in the second lower circulation tank through the second discharge pipe, and the effluent liquid can fill the second lower circulation tank in the process;
when the first lower circulation tank is adsorbing, the outflow pipe guides liquid into the second lower circulation tank, and after the absorption liquid in the first lower circulation tank is absorbed into a saturated state, the absorption liquid is controlled by the first control mechanism, the second control mechanism and the third control mechanism to be regulated to a first state, the second lower circulation tank is adsorbing the lower layer at the moment, the first control valve (preferably the electric control valve) is opened to discharge the saturated absorption liquid in the first lower circulation tank, and the in-process effluent liquid can fill the first lower circulation tank.
Meanwhile, it should be noted that according to the condition of the absorbed waste gas, such as different impurity amounts, types, air flows, temperatures and the like, the packing of the upper layer and the lower layer needs to be designed in a targeted manner, the diameters of the new liquid inflow pipe, the new liquid outflow pipe, the new first spray pipe, the new liquid outflow pipe, the new second spray pipe and the new second outflow pipe are designed, design the power of the first pump body and the power of the second pump body, but also need to design thickness, quality, density or the use kind of two-layer packing about, design the shower nozzle of two places about, etc. for the effect that finally reaches is:
the speed of the new liquid inflow pipe is equal to the speed of the outflow pipe;
but also when the adsorption in the lower circulation tank (the first lower circulation tank or the second lower circulation tank) reaches saturation, the other lower circulation tank is just filled to an appropriate amount.
By the method, all the discharged absorption liquid (discharged from the first discharge pipe or the second discharge pipe) is in a saturated state, so that the use efficiency of the absorption liquid is ensured; meanwhile, as the waste gas is adsorbed below, the impurity concentration is higher, and the waste gas can have better adsorption effect when being adsorbed through the liquid flowing out of the upper circulating tank; the upper layer of gas is adsorbed, so that the cleanliness is relatively high, and the impurities are relatively less; the absorption liquid in the upper circulating tank is cleaner, so that the upper circulating tank can have a better absorption effect when absorbing the part of waste gas, and the absorption effect of the waste gas can be ensured comprehensively.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing the structure of one embodiment of a continuous packed absorber of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 2;
FIG. 4 is an enlarged view of portion C of FIG. 2;
FIG. 5 is a schematic diagram II of an embodiment of a continuous packed absorber of the invention;
FIG. 6 is an enlarged view of portion D of FIG. 5;
FIG. 7 is a cross-sectional view of one embodiment of a continuous packed absorber of the invention;
FIG. 8 is an enlarged view of portion E of FIG. 7;
fig. 9 is an enlarged view of the portion F in fig. 7;
FIG. 10 is a schematic view of one embodiment of the first rotating shell, second rotating shell and third rotating shell portions of the continuous packed absorber of the present invention in a first state;
FIG. 11 is a schematic view of an embodiment of the first rotating shell, second rotating shell and third rotating shell portions of the continuous packed absorber of the present invention in a second state.
In the figure, 1, an absorption tower body; 2. an air inlet pipe; 3. an air outlet pipe; 4. a first press layer; 5. a first support layer; 6. a receiving body; 7. a second press layer; 8. a second support layer; 9. an air duct; 10. a first shower; 11. a first liquid outlet pipe; 12. a first pump body; 13. a second shower; 14. a second liquid outlet pipe; 15. a second pump body; 16. an upper circulation tank; 17. new liquid flows into the pipe; 18. an outflow tube; 19. a first lower circulation tank; 20. a second lower circulation tank; 21. a first discharge pipe; 22. a first control valve; 23. a second discharge pipe; 24. a second control valve; 25. a first communication pipe; 26. a second communicating pipe; 27. a third communicating pipe; 28. a fourth communicating pipe; 29. a fifth communicating pipe; 30. a sixth communicating pipe; 31. a first rotating case; 32. a first rotating body; 33. a first communication groove; 34. a first operation handle; 35. a second rotating case; 36. a second rotating body; 37. a second communication groove; 38. a second handle; 39. a third rotary case; 40. a third rotor; 41. a third communication groove; 42. a third operation handle; 43. a first protrusion; 44. a second protrusion; 45. a termination lever; 46. a temporary storage tank; 47. a temporary storage tube; 48. and dispersing the air shell.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
A continuous packed absorber, as shown in FIGS. 1 to 11 (the sizes, lengths, etc. of the respective structures in the drawings are not represented by actual sizes, lengths, etc.), comprises,
the absorption tower comprises an absorption tower body 1, wherein the bottom of the absorption tower body 1 is communicated with an air inlet pipe 2, and the top of the absorption tower body is communicated with an air outlet pipe 3;
the first material pressing layer 4, the first supporting layer 5, the bearing body 6, the second material pressing layer 7 and the second supporting layer 8 are sequentially distributed on the inner wall of the absorption tower body 1 from top to bottom, filling materials are respectively arranged between the first material pressing layer 4 and the first supporting layer 5 and between the second material pressing layer 7 and the second supporting layer 8, and the outer wall of the bearing body 6 is connected with the inner wall of the absorption tower body 1;
an air duct 9, the air duct 9 penetrating through the receiving body 6 and being used for introducing the air below the receiving body 6 to the upper side of the receiving body 6;
The top of the first spray pipe 10 is higher than the first pressing layer 4, the top of the first spray pipe 11 is communicated with the bottom of the bearing body 6, and a first pump body 12 is arranged on the first spray pipe 10;
the top of the second spray pipe 13 is positioned between the bearing body 6 and the second pressing layer 7, the second spray pipe 14 is communicated with the bottom of the absorption tower body 1, and a second pump body 15 is arranged on the second spray pipe 13;
an upper circulation tank 16, wherein the first spray pipe 10 and the first liquid outlet pipe 11 are communicated with the upper circulation tank 16, and the top of the upper circulation tank 16 is lower than the bottom of the first liquid outlet pipe 11;
a new liquid inflow pipe 17 and an outflow pipe 18, the new liquid inflow pipe 17 and the outflow pipe 18 being respectively communicated with the top and bottom of the upper circulation tank 16;
the first lower circulation tank 19 and the second lower circulation tank 20, wherein the first lower circulation tank 19 and the second lower circulation tank 20 are lower than the upper circulation tank 16, a first discharge pipe 21 is arranged at the bottom of the first lower circulation tank 19, a first control valve 22 is arranged on the first discharge pipe 21, a second discharge pipe 23 is arranged at the bottom of the second lower circulation tank 20, and a second control valve 24 is arranged on the second discharge pipe 23;
A first control mechanism, a second control mechanism and a third control mechanism, wherein the first control mechanism is used for controlling the second spraying pipe 13 to be communicated with the first lower circulation tank 19 or the second lower circulation tank 20, the second control mechanism is used for controlling the second liquid outlet pipe 14 to be communicated with the first lower circulation tank 19 or the second lower circulation tank 20, the third control mechanism is used for controlling the outflow pipe 18 to be communicated with the first lower circulation tank 19 or the second lower circulation tank 20, and the first control mechanism, the second control mechanism and the third control mechanism all comprise a first state and a second state;
when in the first state, the second spraying pipe 13 and the second liquid outlet pipe 14 are communicated with the second lower circulation tank 20, and the outflow pipe 18 is communicated with the first lower circulation tank 19;
when in the second state, the second spray pipe 13 and the second liquid outlet pipe 14 are both communicated with the first lower circulation tank 19, and the outflow pipe 18 is communicated with the second lower circulation tank 20.
The system further comprises a first communicating pipe 25, a second communicating pipe 26, a third communicating pipe 27, a fourth communicating pipe 28, a fifth communicating pipe 29 and a sixth communicating pipe 30, wherein the fifth communicating pipe 29 and the sixth communicating pipe 30 are in an S shape or a Z shape;
The first control mechanism comprises a first rotating shell 31 and a first rotating body 32 rotatably connected in the first rotating shell 31, a first communication groove 33 is formed through the side part of the first rotating body 32, the second spray pipe 13, the first communication pipe 25 and the second communication pipe 26 are all communicated with the first rotating shell 31, the communication parts of the second spray pipe 13, the first communication pipe 25 and the second communication pipe 26 with the first rotating shell 31 are uniformly distributed on the first rotating shell 31 in a circumferential shape, and a first operation handle 34 extending out of the first rotating shell 31 is arranged in the middle part of the first rotating body 32;
the second control mechanism comprises a second rotating shell 35 and a second rotating body 36 rotatably connected in the second rotating shell 35, a second communication groove 37 is formed through the side part of the second rotating body 36, the second liquid outlet pipe 14, the third communication pipe 27 and the fourth communication pipe 28 are all communicated with the second rotating shell 35, the communication parts of the second liquid outlet pipe 14, the third communication pipe 27 and the fourth communication pipe 28 and the second rotating shell 35 are uniformly distributed on the second rotating shell 35 in a circumferential shape, and a second operation handle 38 extending out of the second rotating shell 35 is arranged in the middle of the second rotating body 36;
The third control mechanism includes a third rotating shell 39 and a third rotating body 40 rotatably connected in the third rotating shell 39, a third communication slot 41 is opened through a side portion of the third rotating body 40, the outflow pipe 18, the fifth communication pipe 29 and the sixth communication pipe 30 are all communicated with the third rotating shell 39, and communication positions of the outflow pipe 18, the fifth communication pipe 29 and the sixth communication pipe 30 and the third rotating shell 39 are uniformly distributed on the third rotating shell 39 in a circumferential shape, and a third operation handle 42 extending out of the first rotating shell 31 is provided in a middle portion of the third rotating body 40;
when in the first state, two ends of the first communicating groove 33 are respectively communicated with the second spraying pipe 13 and the first communicating pipe 25, two ends of the second communicating groove 37 are respectively communicated with the second liquid outlet pipe 14 and the third communicating pipe 27, two ends of the third communicating groove 41 are respectively communicated with the outflow pipe 18 and the fifth communicating pipe 29, the bottom of the first communicating pipe 25 is communicated with the bottom of the second lower circulation tank 20, the bottom of the third communicating pipe 27 is positioned in the opening of the second lower circulation tank 20, and the bottom of the fifth communicating pipe 29 is positioned in the opening of the first lower circulation tank 19;
When in the second state, the two ends of the first communicating groove 33 are respectively communicated with the second shower pipe 13 and the second communicating pipe 26, the two ends of the second communicating groove 37 are respectively communicated with the second liquid outlet pipe 14 and the fourth communicating pipe 28, the two ends of the third communicating groove 41 are respectively communicated with the outflow pipe 18 and the sixth communicating pipe 30, the bottom of the second communicating pipe 26 is communicated with the bottom of the first lower circulation tank 19, the bottom of the fourth communicating pipe 28 is positioned in the opening of the first lower circulation tank 19, and the bottom of the sixth communicating pipe 30 is positioned in the opening of the second lower circulation tank 20.
The second rotating shell 35 is located between the first rotating shell 31 and the third rotating shell 39, a first protrusion 43 and a second protrusion 44 are provided on an outer wall of the second rotating shell 35, a stop rod 45 perpendicular to the first operating handle 34 is provided on the first operating handle 34, and rotating the first rotating body 32 can cause the stop rod 45 to abut against the first protrusion 43 or the second protrusion 44;
the two ends of the second operating handle 38 are respectively connected with the first rotating body 32 and the second rotating body 36, the two ends of the third operating handle 42 are respectively connected with the second rotating body 36 and the third rotating body 40, and the axes of the first operating handle 34, the second operating handle 38 and the third operating handle 42 are all collinear.
Temporary storage tanks 46 with upward openings are arranged on the inner walls of the first lower circulation tank 19 and the second lower circulation tank 20, and the bottom ends of the fifth communication pipe 29 and the sixth communication pipe 30 are respectively positioned above the two temporary storage tanks 46;
the bottom of temporary storage tank 46 is provided with the temporary storage pipe 47 of reverse J font, the bottom of temporary storage tank 46 is less than the bottom of temporary storage tank 46, and the top is the form of buckling downwards, the opening at temporary storage pipe 47 top is located in the opening of temporary storage tank 46, and is higher than the inner wall of temporary storage tank 46 bottom.
The air duct 9 is provided with a plurality of, the support body 6 is the ascending cover form of opening, be provided with the gas dispersing shell 48 in the inner chamber of support body 6 level, a plurality of gas dispersing holes have been seted up to the bottom of gas dispersing shell 48, the top of air duct 9 be the form of buckling with the top of gas dispersing shell 48 communicates with each other, the outer wall of gas dispersing shell 48 with set for the distance between the inner wall of support body 6.
The invention also provides a process for absorption using a continuous packed absorber as defined in any one of the preceding claims, comprising the steps of:
s1, enabling waste gas to enter an absorption tower body 1 from an air inlet pipe 2, starting a first pump body 12 and a second pump body 15, enabling the first pump body 12 to pump liquid in an upper circulation tank 16 to the tail end of a first spray pipe 10, enabling the liquid to fall in a dispersed mode under the action of a plurality of spray heads distributed horizontally, enabling the second pump body 15 to pump liquid in a second lower circulation tank 20 to the tail end of a second spray pipe 13, and enabling the liquid to fall in a dispersed mode under the action of a plurality of spray heads distributed horizontally;
S2, after the waste gas sequentially passes through the second supporting layer 8, the filler at the lower layer and the second pressing layer 7, the waste gas passes through the bearing body 6 through the air duct 9, and in the process, the gas and the liquid in the second spraying pipe 13 move in opposite directions;
s3, the gas continues to upwards, and is discharged to the outside through the gas outlet pipe 3 after sequentially passing through the first supporting layer 5, the upper filler, the first pressing layer 4 and the defoaming device;
wherein, the liquid crystal display device comprises a liquid crystal display device,
fresh liquid continuously flows into the clean absorption liquid flowing pipe 17, and the absorption liquid continuously flows out of the upper circulating tank 16 through the outflow pipe 18;
the outflow pipe 18 introduces the liquid into the first lower circulation tank 19 while the second lower circulation tank 20 is adsorbing;
the outflow pipe 18 introduces the liquid into the second lower circulation tank 20 while the first lower circulation tank 19 is adsorbing.
When waste gas is treated, firstly, the waste gas enters the absorption tower body 1 from the air inlet pipe 2, the first pump body 12 and the second pump body 15 are started, the first pump body 12 pumps liquid in the upper circulation tank 16 to the tail end of the first spray pipe 10 and dispersedly drops under the action of a plurality of spray heads distributed horizontally, and the second pump body 15 pumps liquid in the second lower circulation tank 20 to the tail end of the second spray pipe 13 and dispersedly drops under the action of a plurality of spray heads distributed horizontally;
Then the waste gas passes through the bearing body 6 through the gas guide pipe 9 after sequentially passing through the second supporting layer 8, the filler at the lower layer and the second pressing layer 7, and in the process, the gas and the liquid in the second spray pipe 13 move in opposite directions; the gas continues to upwards, and is discharged to the outside through the air outlet pipe 3 after sequentially passing through the first supporting layer 5, the upper packing, the first pressing layer 4 and the foam removing device, wherein the packing materials at the upper side and the lower side are common packing materials in the market, can be regular packing materials or random packing materials, and can be common ceramic corrugation, plastic corrugation or silk screen corrugation and the like according to the condition of waste gas;
wherein, the fresh liquid continuously flows into the clean absorption liquid in the inflow pipe 17, and the outflow pipe 18 continuously flows out of the absorption liquid in the upper circulation tank 16, and the diameters, the pressure, the position and the like of the fresh liquid inflow pipe 17 and the outflow pipe 18 are set so that the inflow speed of the fresh liquid inflow pipe 17 is close to or equal to the outflow speed of the outflow pipe 18;
when the second lower circulation tank 20 is in adsorption (the first lower circulation tank 19 is in a standby state of emptying, filling and the like), the outflow pipe 18 guides the liquid into the first lower circulation tank 19, and when the absorption liquid in the second lower circulation tank 20 is saturated, the second lower circulation tank 19 is adsorbed when the second lower circulation tank 20 is adjusted to be in a second state by the first control mechanism, the second control mechanism and the third control mechanism, and the second control valve 24 (preferably an electric control valve) is opened to discharge the saturated absorption liquid in the second lower circulation tank 20 through the second discharge pipe 23, and the second lower circulation tank 20 can be filled by the outflow liquid in the process;
When the first lower circulation tank 19 is adsorbing, the outflow pipe 18 guides the liquid into the second lower circulation tank 20, and after the absorption liquid in the first lower circulation tank 19 is absorbed into the saturated state, the absorption liquid is controlled by the first control mechanism, the second control mechanism and the third control mechanism to be regulated to the first state, at this time, the second lower circulation tank 20 adsorbs the lower layer, the first control valve 22 (preferably an electric control valve) is opened to discharge the saturated absorption liquid in the first lower circulation tank 19, and the in-process effluent can fill the first lower circulation tank 19.
It should also be noted that, according to the conditions of the exhaust gas to be adsorbed, such as different amounts, types, and gas flows, temperatures, etc., the upper and lower layers of packing are required to be designed with pertinence, the diameters of the new liquid inflow pipe 17, the outflow pipe 18, the first shower pipe 10, the first liquid outflow pipe 11, the second shower pipe 13, and the second outflow pipe 18 are designed, the power of the first pump body 12 and the power of the second pump body 15 are designed, and the thickness, quality, density, or types of usage of the upper and lower layers of packing are also required to be designed, the spray heads at the upper and lower positions are designed, etc., so that the finally achieved effects are that:
The velocity of the new flow into the pipe 17 is equal to the velocity of the outflow pipe 18;
but also when the adsorption in the lower circulation tank (the first lower circulation tank 19 or the second lower circulation tank 20) reaches saturation, the other lower circulation tank is just filled to an appropriate amount.
By the above method, all the discharged absorption liquid (discharged from the first discharge pipe 21 or the second discharge pipe 23) is in a saturated state, thereby ensuring the use efficiency of the absorption liquid; meanwhile, as the waste gas is adsorbed below, the impurity concentration is higher, and the waste gas can have better adsorption effect when being adsorbed through the liquid flowing out of the upper circulating tank 16; the upper layer of gas is adsorbed, so that the cleanliness is relatively high, and the impurities are relatively less; the absorption liquid in the upper circulation tank 16 is also cleaner, so that the absorption effect on the exhaust gas can be better when the exhaust gas is absorbed, and the absorption effect on the exhaust gas can be comprehensively ensured.
Taking the state in fig. 1 as an example:
at this time, in a first state in which the stopping rod 45 is abutted against the upper left of the first protrusion 43, and then the lower side at this time is used with the second lower circulation tank 20; that is, after the second pump body 15 is opened, the liquid in the second lower circulation tank 20 is pumped up through the first communication pipe 25, the first communication groove 33 and the second shower pipe 13 in order for use; simultaneously, the liquid in the second liquid outlet pipe 14 flows back to the second lower circulation tank 20 through the second liquid outlet pipe 14, the second communication groove 37 and the third communication pipe 27 in sequence;
Simultaneously, the fresh liquid flows into the fresh liquid inflow pipe 17 and flows into the upper circulation tank 16, and the outflow pipe 18 flows out the partially adsorbed liquid (balance of both), and then sequentially passes through the third communication groove 41 and the fifth communication pipe 29 and then flows into the first lower circulation tank 19 (the fifth communication pipe 29 is S-shaped or zigzag-shaped, and can guide the liquid, and likewise the sixth communication pipe 30);
during adjustment (either manual adjustment is performed periodically or the first operating handle 34 is driven to rotate by a servo motor at fixed time), the first operating handle 34 is rotated anticlockwise, so that the stop rod 45 is abutted against the right side of the second protrusion 44, and at this time, the first rotating body 32, the second rotating body 36 and the third rotating body 40 are driven to rotate by the second operating handle 38 and the third operating handle 42 in sequence, and the second state is reached;
in this state, the first lower circulation tank 19 is used below; after the second pump body 15 is opened, the liquid in the first lower circulation tank 19 is pumped up through the second communicating pipe 26, the first communicating groove 33 and the second spraying pipe 13 in sequence for use; simultaneously, the liquid in the second liquid outlet pipe 14 sequentially passes through the second liquid outlet pipe 14, the second communication groove 37 and the fourth communication pipe 28 and returns to the first lower circulation tank 19;
At the same time, the outflow pipe 18 flows out the partially adsorbed liquid, sequentially through the third communication groove 41 and the sixth communication pipe 30, and then flows into the second lower circulation tank 20.
Thus, the absorption liquid can be efficiently utilized.
Wherein the first handle 34, the second handle 38 and the third handle 42 pass through one or two of the first rotating shell 31, the second rotating shell 35 and the third rotating shell 39 and are then connected with the first rotating shell 31, the second rotating shell 35 and the third rotating shell 39 in a sealing way; since only the first operation handle 34 is required to be turned during actual operation, the synchronization and effect of the actual operation are better.
Moreover, when the water in the fifth communication pipe 29 or the sixth communication pipe 30 just flows out, the water does not directly flow into the first lower circulation tank 19 or the second lower circulation tank 20, but flows into the temporary storage tank 46 first, and does not flow out immediately; at this time, the first discharge pipe 21 or the second discharge pipe 23 is still in a water discharge state; after the first discharge pipe 21 or the second discharge pipe 23 is discharged, the liquid level in the temporary storage tank 46 just reaches (or reaches in a near time) the bent position at the top of the temporary storage tank 46, and the liquid in the temporary storage tank 46 can flow out completely under the action of the siphoning phenomenon.
That is, the temporary storage tank 46 and the temporary storage pipe 47 can prevent water in the partial outflow pipe 18 from flowing out when not being used, and further ensure the utilization rate of the absorption liquid.
When the gas flows out from the top of the gas guide pipe 9, the gas firstly flows into the gas dispersing shell 48 and then flows out through the gas dispersing holes on the gas dispersing shell 48, and the gas dispersing shell 48 is immersed below the liquid level in the bearing body 6, so that after the gas flows out from the gas dispersing shell 48, the gas can be further adsorbed by the adsorbed liquid once, and the adsorption effect on toxic and harmful substances in the gas is further ensured.
In another embodiment, the gas dispersing shell 48 is higher than the supporting body 6, and the liquid level in the supporting body 6 is lower than the bottom of the gas dispersing shell 48, so that the gas at the bottom can normally flow into the upper part of the supporting body 6 although the gas is not adsorbed by the liquid in the supporting body 6.
In a further embodiment, the air dispersing shell 48 is not arranged, but the top of the air duct 9 is in an inverted J shape, and the opening at the top of the air duct 9 is higher than the top of the liquid level in the bearing body 6; meanwhile, as the top of the air duct 9 is barb-shaped, the absorption liquid above can be well prevented from being directly left in the absorption unit below.
It should be noted that, in the present description, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different manner from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (4)
1. A continuous packing absorber, characterized in that: comprising the steps of (a) a step of,
the absorption tower comprises an absorption tower body (1), wherein an air inlet pipe (2) is communicated with the bottom of the absorption tower body (1), and an air outlet pipe (3) is communicated with the top of the absorption tower body;
the absorption tower comprises a first pressing layer (4), a first supporting layer (5), a bearing body (6), a second pressing layer (7) and a second supporting layer (8) which are sequentially distributed on the inner wall of the absorption tower body (1) from top to bottom, wherein fillers are respectively arranged between the first pressing layer (4) and the first supporting layer (5) and between the second pressing layer (7) and the second supporting layer (8), and the outer wall of the bearing body (6) is connected with the inner wall of the absorption tower body (1);
an air duct (9), wherein the air duct (9) passes through the bearing body (6) and is used for guiding the air below the bearing body (6) to the upper part of the bearing body (6);
The top of the first spray pipe (10) is higher than the first pressing layer (4), the top of the first spray pipe (11) is communicated with the bottom of the bearing body (6), and a first pump body (12) is arranged on the first spray pipe (10);
the top of the second spray pipe (13) is positioned between the bearing body (6) and the second pressing layer (7), the second spray pipe (14) is communicated with the bottom of the absorption tower body (1), and a second pump body (15) is arranged on the second spray pipe (13);
the first spray pipe (10) and the first liquid outlet pipe (11) are communicated with the upper circulating tank (16), and the top of the upper circulating tank (16) is lower than the bottom of the first liquid outlet pipe (11);
a new liquid inflow pipe (17) and an outflow pipe (18), wherein the new liquid inflow pipe (17) and the outflow pipe (18) are respectively communicated with the top and the bottom of the upper circulation tank (16);
the device comprises a first lower circulation tank (19) and a second lower circulation tank (20), wherein the first lower circulation tank (19) and the second lower circulation tank (20) are lower than the upper circulation tank (16), a first discharge pipe (21) is arranged at the bottom of the first lower circulation tank (19), a first control valve (22) is arranged on the first discharge pipe (21), a second discharge pipe (23) is arranged at the bottom of the second lower circulation tank (20), and a second control valve (24) is arranged on the second discharge pipe (23);
The first control mechanism is used for controlling the second spraying pipe (13) to be communicated with the first lower circulation tank (19) or the second lower circulation tank (20), the second control mechanism is used for controlling the second liquid outlet pipe (14) to be communicated with the first lower circulation tank (19) or the second lower circulation tank (20), the third control mechanism is used for controlling the outflow pipe (18) to be communicated with the first lower circulation tank (19) or the second lower circulation tank (20), and the first control mechanism, the second control mechanism and the third control mechanism all comprise a first state and a second state;
when in the first state, the second spraying pipe (13) and the second liquid outlet pipe (14) are communicated with the second lower circulation tank (20), and the outflow pipe (18) is communicated with the first lower circulation tank (19);
when in the second state, the second spraying pipe (13) and the second liquid outlet pipe (14) are communicated with the first lower circulation tank (19), and the outflow pipe (18) is communicated with the second lower circulation tank (20);
the device further comprises a first communicating pipe (25), a second communicating pipe (26), a third communicating pipe (27), a fourth communicating pipe (28), a fifth communicating pipe (29) and a sixth communicating pipe (30), wherein the fifth communicating pipe (29) and the sixth communicating pipe (30) are S-shaped or Z-shaped;
The first control mechanism comprises a first rotating shell (31) and a first rotating body (32) which is rotationally connected in the first rotating shell (31), a first communication groove (33) is formed in the side part penetrating through the first rotating body (32), the second spray pipe (13), the first communication pipe (25) and the second communication pipe (26) are all communicated with the first rotating shell (31), and the communicating parts of the second spray pipe (13), the first communication pipe (25) and the second communication pipe (26) and the first rotating shell (31) are uniformly distributed on the first rotating shell (31) in a circumferential shape, and a first operation handle (34) extending out of the first rotating shell (31) is arranged in the middle of the first rotating body (32);
the second control mechanism comprises a second rotating shell (35) and a second rotating body (36) which is rotationally connected in the second rotating shell (35), a second communication groove (37) is formed through the side part of the second rotating body (36), the second liquid outlet pipe (14), the third communication pipe (27) and the fourth communication pipe (28) are all communicated with the second rotating shell (35), and the communication parts of the second liquid outlet pipe (14), the third communication pipe (27) and the fourth communication pipe (28) and the second rotating shell (35) are uniformly distributed on the second rotating shell (35) in a circumferential shape, and a second operation handle (38) which extends out of the second rotating shell (35) is arranged in the middle part of the second rotating body (36);
The third control mechanism comprises a third rotating shell (39) and a third rotating body (40) which is rotationally connected in the third rotating shell (39), a third communication groove (41) is formed through the side part of the third rotating body (40), the outflow pipe (18), the fifth communication pipe (29) and the sixth communication pipe (30) are all communicated with the third rotating shell (39), and the communication parts of the outflow pipe (18), the fifth communication pipe (29) and the sixth communication pipe (30) and the third rotating shell (39) are uniformly distributed on the third rotating shell (39) in a circumferential shape, and a third operating handle (42) which extends out of the first rotating shell (31) is arranged in the middle part of the third rotating body (40);
when in the first state, two ends of the first communicating groove (33) are respectively communicated with the second spraying pipe (13) and the first communicating pipe (25), two ends of the second communicating groove (37) are respectively communicated with the second liquid outlet pipe (14) and the third communicating pipe (27), two ends of the third communicating groove (41) are respectively communicated with the outflow pipe (18) and the fifth communicating pipe (29), the bottom of the first communicating pipe (25) is communicated with the bottom of the second lower circulating tank (20), the bottom of the third communicating pipe (27) is positioned in the opening of the second lower circulating tank (20), and the bottom of the fifth communicating pipe (29) is positioned in the opening of the first lower circulating tank (19);
When in the second state, two ends of the first communicating groove (33) are respectively communicated with the second spraying pipe (13) and the second communicating pipe (26), two ends of the second communicating groove (37) are respectively communicated with the second liquid outlet pipe (14) and the fourth communicating pipe (28), two ends of the third communicating groove (41) are respectively communicated with the outflow pipe (18) and the sixth communicating pipe (30), the bottom of the second communicating pipe (26) is communicated with the bottom of the first lower circulating tank (19), the bottom of the fourth communicating pipe (28) is positioned in the opening of the first lower circulating tank (19), and the bottom of the sixth communicating pipe (30) is positioned in the opening of the second lower circulating tank (20);
temporary storage tanks (46) with upward openings are arranged on the inner walls of the first lower circulation tank (19) and the second lower circulation tank (20), and the bottom ends of the fifth communicating pipe (29) and the sixth communicating pipe (30) are respectively positioned above the two temporary storage tanks (46);
the bottom of temporary storage tank (46) is provided with temporary storage pipe (47) of reverse J font, the bottom of temporary storage tank (46) is less than the bottom of temporary storage tank (46), and the top is the form of buckling downwards, the opening at temporary storage pipe (47) top is located in the opening of temporary storage tank (46), and is higher than the inner wall of temporary storage tank (46) bottom.
2. The continuous packed absorber according to claim 1, wherein: the second rotating shell (35) is positioned between the first rotating shell (31) and the third rotating shell (39), a first bulge (43) and a second bulge (44) are arranged on the outer wall of the second rotating shell (35), a termination rod (45) perpendicular to the first operating handle (34) is arranged on the first operating handle (34), and the first rotating body (32) can enable the termination rod (45) to be in contact with the first bulge (43) or the second bulge (44);
the two ends of the second operating handle (38) are respectively connected with the first rotating body (32) and the second rotating body (36), the two ends of the third operating handle (42) are respectively connected with the second rotating body (36) and the third rotating body (40), and the axes of the first operating handle (34), the second operating handle (38) and the third operating handle (42) are all collinear.
3. The continuous packed absorber according to claim 1, wherein: the air duct (9) is provided with a plurality of, the support body (6) is the ascending cover form of opening, be provided with in the inner chamber level of support body (6) and scatter gas shell (48), a plurality of air vents have been seted up to the bottom of dispelling gas shell (48), the top of air duct (9) be the form of buckling with the top of dispelling gas shell (48) communicates with each other, the outer wall of dispelling gas shell (48) with set for the distance between the inner wall of support body (6).
4. A process for absorption using the continuous packed absorber according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
s1, enabling waste gas to enter an absorption tower body (1) from an air inlet pipe (2), starting a first pump body (12) and a second pump body (15), enabling the first pump body (12) to pump liquid in an upper circulation tank (16) to the tail end of a first spray pipe (10), enabling the liquid to fall down in a dispersed mode under the action of a plurality of spray heads distributed horizontally, enabling the second pump body (15) to pump liquid in a second lower circulation tank (20) to the tail end of a second spray pipe (13), and enabling the liquid to fall down in a dispersed mode under the action of the plurality of spray heads distributed horizontally;
s2, after the waste gas sequentially passes through the second supporting layer (8), the filler at the lower layer and the second pressing layer (7), the waste gas passes through the bearing body (6) through the air duct (9), and in the process, the gas and the liquid in the second spraying pipe (13) move in opposite directions;
s3, the gas continues to upwards, and is discharged to the outside through the gas outlet pipe (3) after sequentially passing through the first supporting layer (5), the upper filler, the first pressing layer (4) and the defoaming device;
wherein, the liquid crystal display device comprises a liquid crystal display device,
the fresh liquid inflow pipe (17) continuously flows in clean absorption liquid, and the outflow pipe (18) continuously flows out of the absorption liquid in the upper circulating tank (16);
When the second lower circulation tank (20) is adsorbing, the outflow pipe (18) guides the liquid into the first lower circulation tank (19);
when the first lower circulation tank (19) is adsorbing, the outflow pipe (18) guides the liquid into the second lower circulation tank (20).
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| CN202210149394.1A CN114452781B (en) | 2022-02-18 | 2022-02-18 | Continuous filler absorption tower and absorption process thereof |
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