CN111644045B - Exhaust gas leaching purification system and exhaust gas purification method - Google Patents
Exhaust gas leaching purification system and exhaust gas purification method Download PDFInfo
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- CN111644045B CN111644045B CN202010472477.5A CN202010472477A CN111644045B CN 111644045 B CN111644045 B CN 111644045B CN 202010472477 A CN202010472477 A CN 202010472477A CN 111644045 B CN111644045 B CN 111644045B
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention discloses a waste gas leaching and purifying system which comprises a waste gas purifying shell in a revolving body structure, wherein a sulfur-containing waste gas purifying cavity is arranged inside the waste gas purifying shell, and leaching absorption liquid is arranged at the bottom of the sulfur-containing waste gas purifying cavity; the part of the dispersed spray which is spirally and upwards sprayed from the upper end of the spray dispersing channel and has a smaller initial speed drops to the central part of the annular rotational flow desulfurization leaching cavity under the action of gravity, and the part of the dispersed spray which is spirally and upwards sprayed from the upper end of the spray dispersing channel does spiral falling motion under the wrapping of the rotational flow in the annular rotational flow desulfurization leaching cavity and finally drops to the bottom of the sulfur-containing waste gas purification cavity, so that the whole annular rotational flow desulfurization leaching cavity is filled with the spirally falling diluent spray, and further the sulfur-containing waste gas rotational flow in the annular rotational flow desulfurization leaching cavity is fully contacted and fused with the spirally falling diluent spray, thereby realizing the secondary absorption of the sulfur-containing waste gas.
Description
Technical Field
The invention belongs to the field of industrial waste gas desulfurization.
Background
Sulfur dioxide gas in the industrial waste gas need discharge outside again after absorbing through the absorption tower, and current absorption tower is mainly taken out the lime thick liquid to the eminence through the water pipe and releases and then form lasting effect of drenching with rain to reach the effect of fully contacting with waste gas, the raindrop of this kind of mode is tenesmus very fast, and the air dwell time is limited, leads to the absorption efficiency of single drip washing to be limited.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the waste gas leaching and purifying system with higher absorption efficiency.
The technical scheme is as follows: in order to achieve the purpose, the waste gas leaching and purifying system comprises a waste gas purifying shell in a revolving body structure, wherein a sulfur-containing waste gas purifying cavity is arranged inside the waste gas purifying shell, and leaching absorption liquid is arranged at the bottom of the sulfur-containing waste gas purifying cavity;
a rotor is also arranged in the sulfur-containing waste gas purification cavity in a coaxial rotating manner; the rotor is rotatable within the exhaust gas purification housing; the bottom of the rotor per se is used for stirring the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity when the rotor rotates;
and a plurality of jet liquid pumps are fixedly arranged above the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity, and can suck the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity and spray the sucked cleaning leaching liquid to the rotor in a jet flow mode.
Further, the casing of each injection liquid pump is fixedly supported and connected with the inner wall of the waste gas purification casing through a pump body bracket; each injection pump comprises a water spraying end and a water absorbing end, and the water absorbing end extends below the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity; the water spraying end is horizontally arranged above the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity.
Furthermore, the peripheral side wall of the waste gas purification shell of the revolving body structure is of a convex arc-shaped surface structure.
Furthermore, the rotor is of an annular rotary thin-wall structure with a three-quarter arc-shaped cross section, an annular rotational flow desulfurization leaching cavity is formed inside the rotor with the three-quarter arc-shaped cross section, the three-quarter arc-shaped cross section of the rotor sequentially comprises a first quarter arc section, a second quarter arc section and a third quarter arc section along the clockwise direction, the counterclockwise end of the first quarter arc section is tangent to the horizontal plane, and the clockwise end of the third quarter arc section is tangent to the plumb line; a waste gas overflow part is formed between the counterclockwise end of the first quarter circular arc segment and the clockwise end of the third quarter circular arc segment, and gas in the annular rotational flow desulfurization leaching cavity can overflow through the waste gas overflow part;
the plurality of liquid injection pumps are distributed in a circumferential array along the axis of the rotor, the water injection ends of the liquid injection pumps are the same as the height of the counterclockwise needle end of the first quarter circular arc section, and the liquid horizontally sprayed by the water injection ends is jetted to the inner side of the arc body of the first quarter circular arc section along the tangential direction of the first quarter circular arc section and ascends upwards along the inner side of the arc body of the first quarter circular arc section;
a horizontal round partition disc is integrally arranged at the middle height of the axis of the rotor, a cover disc body is coaxially connected above the rotor, an annular inner edge is integrally arranged on the lower side of the cover disc body along the outline, and the outline of the lower end of the annular inner edge is integrally connected with the topmost end of the rotor; the space surrounded by the second quarter arc section of the rotor, the cover disc body and the circular partition disc forms a waste gas pressure accumulation and diversion cavity; a bearing hole is formed in the axis of the cover disc body, a vertical waste gas inlet pipe is rotatably arranged in the bearing hole through a first sealing bearing, and a gas outlet end at the lower end of the waste gas inlet pipe extends into the waste gas pressure accumulation and diversion cavity; a plurality of air guide hollowed-out holes are uniformly distributed in the upper part of the second quarter arc section of the rotor in a circumferential array, and each air guide hollowed-out hole is communicated with the upper part of the annular rotational flow desulfurization leaching cavity; a disc-shaped smoke discharging cavity is formed between the cover disc body and the top wall body of the waste gas purification shell, an arc-shaped smoke guiding channel is formed between the third quarter arc section of the rotor and the side inner wall of the waste gas purification shell, the lower end of the arc-shaped smoke guiding channel is communicated with the waste gas overflow part, and the upper end of the arc-shaped smoke guiding channel is communicated with the disc-shaped smoke discharging cavity; the device also comprises a purified smoke exhaust pipe, and the air inlet end of the purified smoke exhaust pipe is communicated with the disc-shaped smoke exhaust cavity.
Furthermore, the upper end of the waste gas inlet pipe is fixedly connected with the top wall body of the waste gas purification shell, the waste gas purification shell also comprises a sulfur-containing waste gas discharge pipe, and the gas outlet end of the sulfur-containing waste gas discharge pipe is communicated with the upper end of the waste gas inlet pipe; and a pressurization air pump is also arranged on the sulfur-containing waste gas discharge pipe.
Furthermore, a plurality of jet flow dispersing stabbing piles are uniformly distributed on the inner side of the arc-shaped lower half part of the second quarter arc section of the rotor in a circumferential array; the jet flow dispersing stabs are all in the enclosing range of the arc-shaped spray restraining sleeve, and the tail end of each jet flow dispersing stabs is fixedly connected with the inner wall of the arc-shaped spray restraining sleeve; the outer wall of the arc-shaped spray restraint sleeve is also provided with a plurality of wind blades in a circumferential array, and the wind blades can drive air in the annular rotational flow desulfurization leaching cavity to form rotational flow rotating along the axis of the rotor along with the rotation of the arc-shaped spray restraint sleeve.
Further, a bearing seat is coaxially arranged at the bottom of the waste gas purification shell, a transmission shaft is rotatably arranged in the bearing seat through a second sealing bearing, and the side wall of the upper end of the transmission shaft is fixedly connected with the back side of the first quarter arc section of the rotor through a plurality of connecting rods; the transmission shaft drives the rotor to rotate along an axis through a plurality of connecting rods; the motor is fixedly installed and is in driving connection with the transmission shaft.
Furthermore, a plurality of stirring blades are distributed on the lower side of the counterclockwise end of the first quarter arc section of the rotor in a circular array, and the lower end of each stirring blade extends into the position below the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity.
Furthermore, an aeration device is also arranged in the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity.
Has the advantages that: the part of the dispersed spray which is spirally and upwards sprayed from the upper end of the spray dispersing channel and has a smaller initial speed drops to the central part of the annular rotational flow desulfurization leaching cavity under the action of gravity, and the part of the dispersed spray which is spirally and upwards sprayed from the upper end of the spray dispersing channel does spiral falling motion under the wrapping of the rotational flow in the annular rotational flow desulfurization leaching cavity and finally drops to the bottom of the sulfur-containing waste gas purification cavity, so that the whole annular rotational flow desulfurization leaching cavity is filled with the spirally falling diluent spray, and further the sulfur-containing waste gas rotational flow in the annular rotational flow desulfurization leaching cavity is fully contacted and fused with the spirally falling diluent spray, thereby realizing the secondary absorption of the sulfur-containing waste gas.
Drawings
FIG. 1 is a schematic view of the overall structure of the device;
FIG. 2 is a schematic sectional view of the apparatus;
FIG. 3 is a schematic structural view of the rotor shown in FIG. 2 with the inner portion thereof hidden;
FIG. 4 is a schematic front sectional view of the apparatus;
FIG. 5 is a schematic front sectional view of a rotor;
FIG. 6 is a schematic perspective view of a rotor;
fig. 7 is a perspective cross-sectional view of the rotor.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Introduction of structural part: the waste gas leaching purification system shown in fig. 1 to 7 comprises a waste gas purification shell 17 in a revolving structure, wherein the peripheral side wall of the waste gas purification shell 17 in the revolving structure of the embodiment is in a convex arc-shaped surface structure, a sulfur-containing waste gas purification cavity is arranged inside the waste gas purification shell 17, and leaching absorption liquid is arranged at the bottom of the sulfur-containing waste gas purification cavity;
a rotor 1 is also arranged in the sulfur-containing waste gas purification cavity in a coaxial rotating manner; the rotor 1 can rotate in the exhaust gas purification housing 17; the bottom of the rotor 1 per se is used for stirring the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity when the rotor rotates;
a plurality of liquid injection pumps 19 are fixedly arranged above the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity, and the liquid injection pumps 19 can suck the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity and spray the sucked cleaning leaching liquid to the rotor 1 in a jet flow mode.
The casing of each injection liquid pump 19 is fixedly supported and connected with the inner wall of the waste gas purification casing 17 through a pump body bracket 20; each injection pump 19 comprises a water injection end 21 and a water suction end 22, and the water suction end 22 extends below the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity; the water spraying end 21 is horizontally arranged above the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity.
The rotor 1 is an annular rotary thin-wall structure with a cross section in a shape of a three-quarter circular arc (the expression thin wall in the embodiment refers to a wall body with a wall thickness smaller than 2 cm; the cross section of the rotor 1 in the embodiment refers to the cross section on the right side of the attached drawings 5 and 4), an annular rotational flow desulfurization leaching cavity 10 is formed on the inner side of the rotor 1 with the cross section in the shape of the three-quarter circular arc, the three-quarter circular arc of the cross section of the rotor 1 sequentially comprises a first quarter circular arc section 1.1, a second quarter circular arc section 1.2 and a third quarter circular arc section 1.3 along the clockwise direction, the counterclockwise end of the first quarter circular arc section 1.1 is tangent to the horizontal plane, and the clockwise end of the third quarter circular arc section 1.3 is tangent to the plumb line; a waste gas overflow part 23 is formed between the counterclockwise end of the first quarter circular arc section 1.1 and the clockwise end of the third quarter circular arc section 1.3, and gas in the annular rotational flow desulfurization leaching cavity 10 can overflow through the waste gas overflow part 23;
the plurality of liquid injection pumps 19 are distributed along the axis of the rotor 1 in a circumferential array, the water injection ends 21 of the liquid injection pumps 19 are the same as the height of the reverse-time needle ends of the first quarter arc section 1.1, and liquid horizontally injected from the water injection ends 21 is injected to the inner side of the arc body of the first quarter arc section 1.1 along the tangential direction of the first quarter arc section 1.1 and ascends along the inner side of the arc body of the first quarter arc section 1.1;
a horizontal round partition disc 12 is integrally arranged at the middle height of the axis of the rotor 1, a cover disc body 4 is coaxially connected above the rotor 1, an annular inner edge 2 is integrally arranged on the lower side of the cover disc body 4 along the outline, and the outline of the lower end of the annular inner edge 2 is integrally connected with the topmost end of the rotor 1; a space wrapped by the second quarter circular arc section 1.2 of the rotor 1, the cover disc body 4 and the circular partition disc 12 forms a waste gas pressure accumulation and diversion cavity 11; a bearing hole 97 is formed in the axis of the cover disc body 4, a vertical waste gas inlet pipe 32 is rotatably arranged in the bearing hole 97 through a first sealing bearing 5, and a gas outlet end of the lower end of the waste gas inlet pipe 32 extends into the waste gas pressure accumulation and diversion cavity 11; a plurality of air guide hollow holes 9 are uniformly distributed on the upper part of a second quarter circular arc section 1.2 of the rotor 1 in a circumferential array, and each air guide hollow hole 9 is communicated with the upper part of an annular rotational flow desulfurization leaching cavity 10; a disc-shaped smoke discharging cavity 30 is formed between the cover disc body 4 and the top wall body of the waste gas purification shell 17, an arc-shaped smoke guiding channel 8 is formed between the third quarter arc section 1.3 of the rotor 1 and the side inner wall of the waste gas purification shell 17, the lower end of the arc-shaped smoke guiding channel 8 is communicated with the waste gas overflow part 23, and the upper end of the arc-shaped smoke guiding channel 8 is communicated with the disc-shaped smoke discharging cavity 30; the device also comprises a purified smoke exhaust pipe 7, and the air inlet end of the purified smoke exhaust pipe 7 is communicated with a disk-shaped smoke exhaust cavity 30.
The upper end of the waste gas introducing pipe 32 is fixedly connected with the top wall body of the waste gas purifying shell 17, the waste gas purifying shell also comprises a sulfur-containing waste gas discharge pipe 6, and the gas outlet end of the sulfur-containing waste gas discharge pipe 6 is communicated with the upper end of the waste gas introducing pipe 32; a pressurization air pump is also arranged on the sulfur-containing waste gas discharge pipe 6.
A plurality of jet flow dispersing stabbing piles 24 are uniformly distributed in a circumferential array on the inner side of the arc-shaped lower half part of a second quarter arc section 1.2 of the rotor 1; the jet flow dispersing stabbed pile structure is characterized by further comprising an arc-shaped splash restraining sleeve 27 coaxially sleeved on the waist of the rotor 1, an annular splash dispersing channel 25 which is communicated up and down is arranged between the inner wall of the arc-shaped splash restraining sleeve 27 and the inner side wall of the arc-shaped of the second quarter arc section 1.2, all the jet flow dispersing stabbed piles 24 are located in the enclosing range of the arc-shaped splash restraining sleeve 27, and the tail end of each jet flow dispersing stabbed pile 24 is fixedly connected with the inner wall of the arc-shaped splash restraining sleeve 27; the outer wall of the arc-shaped spray restraining sleeve 27 is also provided with a plurality of wind blades 26 in a circumferential array, and the wind blades 26 can drive the air in the annular rotational flow desulfurization leaching cavity 10 to form rotational flow rotating along the axis of the rotor 1 along with the rotation of the arc-shaped spray restraining sleeve 27.
A bearing seat 15 is coaxially arranged at the bottom of the waste gas purification shell 17, a transmission shaft 13 is rotatably arranged in the bearing seat 15 through a second sealing bearing 14, and the side wall of the upper end of the transmission shaft 13 is fixedly connected with the back side of a first quarter arc section 1.1 of the rotor 1 through a plurality of connecting rods 16; the transmission shaft 13 drives the rotor 1 to rotate along the axis through a plurality of connecting rods 16; the device also comprises a motor which is fixedly arranged and is in driving connection with the transmission shaft 13.
A plurality of stirring blades 29 are distributed on the lower side of the counterclockwise end of the first quarter arc section 1.1 of the rotor 1 in a circular array, and the lower end of each stirring blade 29 extends into the lower part of the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity.
The leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity is also provided with an aeration device, so that the absorption liquid is oxidized in real time.
Introduction of the principle:
the waste gas sulfur dioxide absorption process and the working principle of the waste gas leaching and purifying system on the premise of the equipment are as follows:
a preparation stage: with the inside of the exhaust gas purification shell 17 of appropriate amount of absorption liquid injection that is used for absorbing sulfur dioxide, the absorption liquid of this embodiment is the lime thick liquid, thereby can absorb sulfur dioxide when the lime thick liquid contacts with the waste gas that contains sulfur dioxide and play the effect of purifying waste gas, and concrete absorption principle is following equation: SO2+ H2O → H2SO 3; CaCO3+ H2SO3 → CaSO3+ CO2+ H2O; gradually accumulating the leaching absorption liquid along with the bottom of the sulfur-containing waste gas purification cavity until the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity completely submerges the water suction ends 22 of all the injection pumps 19; meanwhile, continuously starting an aeration device in the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity, wherein the aeration device mainly has the effect of oxidizing CaSO3, and the reaction formula is CaSO3+ O2 → CaSO 4;
working stages and principles of desulfurization: under the action of the air pump, the waste gas containing sulfur dioxide is continuously led into the waste gas pressure accumulation and diversion cavity 11 through the waste gas inlet pipe 32, so that positive pressure gas is formed in the waste gas pressure accumulation and diversion cavity 11, and then the positive pressure gas in the waste gas pressure accumulation and diversion cavity 11 continuously downwards jets into the annular rotational flow desulfurization leaching cavity 10 through the plurality of air guide hollowed-out holes 9; meanwhile, the motor drives the transmission shaft 13, so that the whole rotor 1 rotates at the rotating speed of 300r/min to 600r/min, and at this time, the wind-driven blades 26 on the arc-shaped spray restraining sleeve 27 drive the air in the whole annular rotational flow desulfurization leaching cavity 10 to form rotational flow rotating along the axis of the rotor 1 along with the rotation of the arc-shaped spray restraining sleeve 27; starting all the liquid jet pumps 19 at the same time, further continuously sucking the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity by the water suction ends 22 of all the liquid jet pumps 19, further horizontally jetting the leaching liquid jet from all the water jet ends 21 of all the liquid jet pumps 19, then jetting the leaching liquid jet horizontally jetted from all the water jet ends 21 to the inner side of the arc body of the first quarter arc section 1.1 along the tangential direction of the first quarter arc section 1.1, rapidly ascending along the inner side of the arc body of the first quarter arc section 1.1 under the action of inertia, then jetting the cleaning liquid which ascends along the inner side of the arc body of the first quarter arc section 1.1 all upwards jetting the annular water bloom dispersion channel 25, and a plurality of jet flow dispersion piles 24 in the annular water bloom dispersion channel 25 rotating at the rotating speed of 300r/min to 600r/min along the axis of the rotor 1, so that the water jet which upwards jetted into the annular water bloom dispersion channel 25 can be rapidly jetted by a plurality of jet flow dispersion piles 24 rotating at high speed The water splash is quickly scattered and is torn into a large amount of splashed water splash in a rotating way, the dispersed water splash formed in the annular water splash dispersing channel 25 makes spiral climbing movement under the comprehensive action of the rotating drive of the plurality of jet flow dispersed barbed piles 24 and the upward inertia of the dispersed water splash, then a large amount of splashed spray is upwards sprayed out in a spiral shape from the upper end of the annular spray dispersion channel 25 under the constraint of the arc spray constraint sleeve 27, so that the dispersed water spray which is spirally and upwards sprayed is converged with the sulfur-containing waste gas which is downwards injected into the annular rotational flow desulfurization leaching cavity 10 from the plurality of air guide hollow holes 9, the sulfur-containing waste gas which is absorbed for the first time is downwards diffused into the whole annular rotational flow desulfurization leaching cavity 10, and sulfur-containing flue gas which is diffused into the whole annular rotational flow desulfurization leaching cavity 10 forms rotational flow which rotates along the axis of the rotor 1 under the driving of the pneumatic blades 26; a part of the dispersed spray which is spirally and upwards sprayed from the upper end of the spray dispersing channel 25 and has a smaller initial velocity drops to the central part of the annular rotational flow desulfurization leaching cavity 10 under the action of gravity, and spirally drops under the wrapping of the rotational flow in the annular rotational flow desulfurization leaching cavity 10, and finally drops to the bottom of the sulfur-containing waste gas purification cavity, so that the whole annular rotational flow desulfurization leaching cavity 10 is filled with the spirally-dropping dilute solution spray, and further the sulfur-containing waste gas rotational flow in the annular rotational flow desulfurization leaching cavity 10 is fully contacted and fused with the spirally-dropping dilute solution spray, thereby realizing the secondary absorption of the sulfur-containing waste gas; meanwhile, the sulfur-containing waste gas which is absorbed for the second time in the annular rotational flow desulfurization leaching cavity 10 continuously overflows to the arc smoke guide channel 8 through the waste gas overflow part 23 under the action of air pressure;
meanwhile, a part of the spray dispersing channel 25 with a larger initial speed which is spirally and upwards sprayed at the upper end of the spray dispersing channel can hit the inner wall of the third quarter arc section 1.3, and attached to the inner wall of the No. three quarter-arc section 1.3 to flow downwards clockwise, finally drops downwards at the clockwise needle end of the No. three quarter-arc section 1.3 in a raindrop mode and returns to the bottom of the sulfur-containing waste gas purification cavity, so that the exhaust gas overflow 23 forms a continuous "water curtain" of a large number of raindrops dripping downwards, further, the waste gas passing through the waste gas overflow part 23 can reach the arc smoke guide channel 8 after being washed for the third time by the water curtain, then the waste gas leached for the third time in the arc-shaped smoke guide channel 8 continuously flows upwards into the disc-shaped smoke exhaust cavity 30, and finally the waste gas leached for the third time in the disc-shaped smoke exhaust cavity 30 is discharged through the purified smoke exhaust pipe 7.
The above is only a preferred embodiment of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (6)
1. Waste gas drip washing clean system, its characterized in that: the waste gas purifying device comprises a waste gas purifying shell (17) in a revolving body structure, wherein a sulfur-containing waste gas purifying cavity is arranged inside the waste gas purifying shell (17), and leaching absorption liquid is arranged at the bottom of the sulfur-containing waste gas purifying cavity;
a rotor (1) is also arranged in the sulfur-containing waste gas purification cavity in a coaxial rotating manner; the rotor (1) is rotatable within the exhaust gas purification housing (17); the bottom of the rotor (1) per se is used for stirring the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity when the rotor rotates;
a plurality of liquid injection pumps (19) are fixedly installed above the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity, and the liquid injection pumps (19) can suck the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity and spray the sucked cleaning leaching liquid to the rotor (1) in a jet flow mode;
the shell of each injection liquid pump (19) is fixedly supported and connected with the inner wall of the waste gas purification shell (17) through a pump body bracket (20); each liquid injection pump (19) comprises a water injection end (21) and a water suction end (22), and the water suction ends (22) extend into the lower part of the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity; the water spraying end (21) is horizontally arranged above the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity;
the peripheral side wall of the waste gas purification shell (17) of the revolving body structure is of a convex arc surface structure;
the rotor (1) is of an annular rotary thin-wall structure with the cross section in a three-quarter circular arc shape, an annular rotational flow desulfurization leaching cavity (10) is formed on the inner side of the rotor (1) with the cross section in the three-quarter circular arc shape, the three-quarter circular arc of the cross section of the rotor (1) sequentially comprises a first quarter circular arc section (1.1), a second quarter circular arc section (1.2) and a third quarter circular arc section (1.3) along the clockwise direction,
the counterclockwise end of the first quarter circular arc section (1.1) is tangent to the horizontal plane, and the clockwise end of the third quarter circular arc section (1.3) is tangent to the plumb line; a waste gas overflow part (23) is formed between the counterclockwise end of the first quarter circular arc section (1.1) and the clockwise end of the third quarter circular arc section (1.3), and gas in the annular rotational flow desulfurization leaching cavity (10) can overflow through the waste gas overflow part (23);
the plurality of liquid injection pumps (19) are distributed in a circumferential array along the axis of the rotor (1), the water spraying end (21) of each liquid injection pump (19) is as high as the counterclockwise end of the first quarter circular arc section (1.1), and liquid horizontally sprayed out of each water spraying end (21) shoots to the inner side of the arc body of the first quarter circular arc section (1.1) along the tangential direction of the first quarter circular arc section (1.1) and ascends upwards along the inner side of the arc body of the first quarter circular arc section (1.1);
a horizontal round partition disc (12) is integrally arranged at the middle height of the axis of the rotor (1), a cover disc body (4) is coaxially connected above the rotor (1), an annular inner edge (2) is integrally arranged at the lower side of the cover disc body (4) along the outline, and the outline of the lower end of the annular inner edge (2) is integrally connected with the topmost end of the rotor (1); a space surrounded by the second quarter arc section (1.2) of the rotor (1), the cover disc body (4) and the circular partition disc (12) forms a waste gas pressure accumulation and diversion cavity (11); a bearing hole (97) is formed in the axis of the cover disc body (4), a vertical waste gas inlet pipe (32) is rotatably arranged in the bearing hole (97) through a first sealing bearing (5), and a gas outlet end at the lower end of the waste gas inlet pipe (32) extends into the waste gas pressure accumulation and diversion cavity (11); a plurality of air guide hollow holes (9) are uniformly distributed in a circumferential array on the upper part of a second quarter circular arc section (1.2) of the rotor (1), and each air guide hollow hole (9) is communicated with the upper part of the annular rotational flow desulfurization leaching cavity (10); a disc-shaped smoke discharging cavity (30) is formed between the cover disc body (4) and the top wall body of the waste gas purification shell (17), an arc smoke guiding channel (8) is formed between the third quarter arc section (1.3) of the rotor (1) and the side inner wall of the waste gas purification shell (17), the lower end of the arc smoke guiding channel (8) is communicated with the waste gas overflow part (23), and the upper end of the arc smoke guiding channel (8) is communicated with the disc-shaped smoke discharging cavity (30); the device also comprises a purified smoke exhaust pipe (7), and the air inlet end of the purified smoke exhaust pipe (7) is communicated with the disc-shaped smoke exhaust cavity (30).
2. The exhaust gas scrubbing purification system of claim 1, wherein: the upper end of the waste gas guide pipe (32) is fixedly connected with the top wall body of the waste gas purification shell (17), the waste gas purification shell also comprises a sulfur-containing waste gas discharge pipe (6), and the gas outlet end of the sulfur-containing waste gas discharge pipe (6) is communicated with the upper end of the waste gas guide pipe (32); and a pressurization air pump is also arranged on the sulfur-containing waste gas discharge pipe (6).
3. The exhaust gas scrubbing purification system of claim 2, wherein: a plurality of jet flow dispersing stabbing piles (24) are uniformly distributed on the arc inner side of the lower half part of the second quarter circular arc section (1.2) of the rotor (1) in a circumferential array; the jet flow dispersing stabbed pile structure is characterized by further comprising an arc-shaped splash restraining sleeve (27) coaxially sleeved on the waist of the rotor (1), an annular splash dispersing channel (25) which is communicated up and down is arranged between the inner wall of the arc-shaped splash restraining sleeve (27) and the arc-shaped inner side wall of the second quarter arc section (1.2), all jet flow dispersing stabbed piles (24) are located in the enclosing range of the arc-shaped splash restraining sleeve (27), and the tail end of each jet flow dispersing stabbed pile (24) is fixedly connected with the inner wall of the arc-shaped splash restraining sleeve (27); the outer wall of the arc-shaped spray restraint sleeve (27) is also provided with a plurality of wind blades (26) in a circumferential array distribution, and the wind blades (26) can drive air in the annular rotational flow desulfurization leaching cavity (10) to form rotational flow rotating along the axis of the rotor (1) along with the rotation of the arc-shaped spray restraint sleeve (27).
4. The exhaust gas scrubbing purification system of claim 3, wherein: a bearing seat (15) is coaxially arranged at the bottom of the waste gas purification shell (17), a transmission shaft (13) is rotatably arranged in the bearing seat (15) through a second sealing bearing (14), and the side wall of the upper end of the transmission shaft (13) is fixedly connected with the back side of a first quarter arc section (1.1) of the rotor (1) through a plurality of connecting rods (16); the transmission shaft (13) drives the rotor (1) to rotate along the axis through a plurality of connecting rods (16); the device also comprises a motor which is fixedly installed and is in driving connection with the transmission shaft (13).
5. The exhaust gas scrubbing purification system of claim 4, wherein: a plurality of stirring blades (29) are distributed on the lower side of the counterclockwise end of the first quarter arc section (1.1) of the rotor (1) in a circular array, and the lower end of each stirring blade (29) extends into the position below the liquid level of the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity.
6. The exhaust gas scrubbing purification system of claim 5, wherein: an aeration device is also arranged in the leaching absorption liquid at the bottom of the sulfur-containing waste gas purification cavity.
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