CN101816840B - Down air-inlet multistage purification recovery device for ester-containing tail gas - Google Patents
Down air-inlet multistage purification recovery device for ester-containing tail gas Download PDFInfo
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- CN101816840B CN101816840B CN201010159494XA CN201010159494A CN101816840B CN 101816840 B CN101816840 B CN 101816840B CN 201010159494X A CN201010159494X A CN 201010159494XA CN 201010159494 A CN201010159494 A CN 201010159494A CN 101816840 B CN101816840 B CN 101816840B
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Abstract
The invention provides a down air-intake multistage purification recovery device for ester-containing tail gas. The device comprises a tower cap, a tower body, an air inlet pipe, an air outlet pipe, an upper ester outlet pipe and a lower ester outlet pipe, wherein the tower cap consists of an inner cap and an outer cap; the inner cap and the outer cap are in a shape of a tapered table; a third water condensing coil is arranged in the hollow part between the inner cap and the outer cap; an inclined plane of a tapered table of the inner cap is provided with a vent hole; the tapered table top of the outer cap is communicated with the air outlet pipe, and the table top of the air outlet pipe is provided with a vent hole; the upper ester outlet pipe is arranged at the bottom of the tower cap; the tower body is a cylinder, and an ester accumulating area, a first condensing coil, a first tray with a hole, a first physical interception layer, a gas buffering area, a second condensing coil, a second tray with a hole and a second physical interception layer are sequentially arranged in the tower body from bottom to top; the gas buffering area is arranged between the tower cap and the second physical interception layer; the lower ester outlet pipe is arranged at the bottom of the tower body; and the air inlet pipe is positioned below the first condensing coil and above the ester accumulating area.
Description
Technical field
The present invention relates to the separation of material, be specifically related to the separator of a kind of Ester and air.
Background technology
At present, be entrained with the Ester that exists with steam or droplet state in the tail gas that in most Ester production processes, produces.Most manufacturing enterprises consider its cost recovery, and the directly ways of this type of tail gas of discharging that adopt had both been polluted environment more, had wasted the Ester that exists in the tail gas again.
Factor such as taking environmental conservation into consideration and cost recovery needs that a kind of tail gas clean-up rate of recovery is high, simple in structure, equipment investment is little, power consumption is low, processing ease, maintenance simply contain the Ester exhaust gas cleaner.
Summary of the invention
The present invention aim to provide a kind ofly have that the tail gas clean-up rate is high, equipment investment is little, power consumption is low, processing ease, maintenance simply contain Ester tail gas clean-up retracting device.
In order to achieve the above object, the present invention realizes through following technical scheme:
Down air-inlet multistage purification recovery device for ester-containing tail gas comprises tower cap, body of the tower, air inlet pipe, escape pipe, goes up ester output pipe and following ester output pipe; The tower cap is made up of interior cap and outer cap; Interior cap is circular cone shape with outer cap; Hollow is provided with the 3rd water condensation coil pipe between interior cap and the outer cap; The frustum of a cone inclined-plane of interior cap is provided with passage, and the circular cone table top of outer cap is communicated with its table top and is provided with passage with escape pipe, is provided with the ester output pipe in tower cap bottom; Body of the tower is a cylinder; Inside is provided with long-pending ester district, first condenser coil, first pallet with holes, the first physics intercept layer, gas buffer region, second condenser coil, second pallet with holes, the second physics intercept layer from lower to upper successively, is provided with gas buffer region between the tower cap and the second physics intercept layer; The body of the tower bottom is provided with down the ester output pipe; Air inlet pipe is positioned at first condenser coil below, top, long-pending ester district.
It is corrosion-resistant that wherein the physics intercept layer can be filled porcelain ripple packing, Pall ring filler, Raschig ring filler, cascade ring filler, berl saddle, becket intalox saddle, metal corrugated plate filler etc.; Any or the two or more mixture in the filler of air-flow can be slowed down and disperse, thereby the Ester of droplet-like can be effectively tackled.
For the ease of observing the Ester in long-pending ester district, can establish the liquid level observation port in body of the tower side, long-pending ester district.
For the ease of the ester that discharging is reclaimed, can be at ester output Guan Shangshe control valve.Control valve can be set to automatic valve, the pressure by-pass valve control that utilizes long-pending ester groove lactone material to form, and when reaching certain pressure intensity, valve is opened the eliminating Ester automatically.
For avoiding tail gas to discharge along the ester output pipe, it is inner to prevent that also extraneous air from getting into tower body, guarantees that the tower body internal gas pressure is stable, can the ester output pipe be made as and can deposit the ester bend pipe.
In order to control the throughput that of escape pipe, adjustment tower internal pressure is controlled at the stable state that helps Ester recovery in the gas most with the body of the tower internal pressure, and control valve can be set on escape pipe.
In order to make gas better in physics intercept layer and the zone condensation of water condensation coil pipe, air inlet pipe is placed first water condensing tube below, extend to the other end of body of the tower, and air inlet pipe extension lower ending opening.
The cooling medium of said condenser coil circulation can be various refrigerants or industrial water, and when adopting industrial water, water temperature remains between 15 ℃～25 ℃, and water circulates the temperature constant of assurance condenser coil in condenser coil.
Adopt down air-inlet multistage purification recovery device for ester-containing tail gas of the present invention; After tail gas enters into the body of the tower bottom through admission line; Air-flow upwards flows; Through the first order retracting device of being made up of the first water condensation coil pipe, first pallet with holes and the first physics intercept layer, the part ester class that contains in the tail gas forms drop and drips to long-pending ester district, tower body bottom; Remaining tail gas continues the second level retracting device that rises and form through by the second water condensation coil pipe, second pallet with holes and the second physics intercept layer after gas buffer region is assembled; Remaining tail gas passes the pore on the cap frustum of a cone inclined-plane in being located at after gas buffer region is assembled, after the condensation of third level water condensation coil pipe, the ester class that condensation is got off is discharged through the ester output pipe of tower cap bottom, and no ester air is discharged from escape pipe.After band ester tail gas purified recovery through device according to the invention, the most of Ester that contains in the tail gas was recovered, and air discharged has obtained purification.
Beneficial effect:
(1), after tail gas gets into body of the tower inside through air inlet pipe; Respectively through the first order and second level retracting device, pass through the third level water condensation coil pipe of cat head at last after, discharge from escape pipe; Purify removal process through multiple condensation, can guarantee efficiently to reclaim completely the ester class in the gas.
(2), because the temperature of the water that flows in the condenser coil is a room temperature, and water temperature remains 15 ℃～25 ℃, and water circulates in condenser coil, cooling does not need other refrigerating plant of extra increase naturally, greatly reduces production cost, and it is lower to consume energy.
(3), be provided with pneumatic control valve in the gas outlet; When the fluctuation of tower internal gas pressure value surpasses prescribed limit; Through the folding of pneumatic control valve, effectively regulate charge flow rate and go out throughput, the body of the tower internal pressure is controlled at helps the stable state that Ester reclaims in the gas most.
(4) the ester output pipe is made as and can deposits the ester bend pipe, and the pressure that utilizes Ester self to form just can be discharged Ester automatically, does not need other supplementary equipment therefore, has simplified production control condition; Constantly all have Ester because bend pipe is inner simultaneously, both avoided inner tail gas to run out of effectively, it is inner to prevent that also extraneous air from getting into tower body, guarantees the stable gas pressure that reclaims in the tower body; On bend pipe, increase valve, can control reaction effectively.
(5), air inlet pipe extends to the other end and the extension lower opening of body of the tower, tail gas enters into body of the tower inside uniformly and reclaims through the opening of below, and Open Side Down can increase tail gas in the inner time of staying of body of the tower, is convenient to the condensation of gas.
(6), first pallet with holes and second pallet with holes be provided with the pore that only supplies tail gas to pass through, and top, all adjacent condensate pans area under control guarantees that pallet has relative low temperature; Droplet-like Ester in the tail gas can not air passing hole; Form big drop at lower surface easily, splash into long-pending ester district, be convenient to reclaim.
(7), the frustum of a cone inclined-plane of interior cap is provided with passage; The circular cone table top of outer cap is provided with passage; Guarantee that the droplet-like Ester is intercepted at body of the tower inside as far as possible; And from the circular cone inclined-plane air inlet of interior cap, discharge tail gas from the circular cone table top of outer cap again, effectively increase the condensation time of tail gas.
(8), tail gas clean-up retracting device of the present invention reclaims the Ester obtain and can directly use as finished product, reduce the Ester loss effectively, also reduced cost recovery simultaneously
(9), reach the gas discharge standard fully through gas purification retracting device purified gas of the present invention, and gas remove the ester rate and reach as high as 99%.Both reduced effectively and directly discharged the pollution of tail gas, and protected environment to reach environmental protection production, reduced the product loss again, saved production cost, increased economic benefit environment.And the compact conformation of present device own, easy to operate, safeguard easily.
Figure of description
Fig. 1 is the structural representation of embodiment 1 said ester-containing tail gas purification recovery device.
Fig. 2 is the structural representation of embodiment 2 said ester-containing tail gas purification recovery devices.
Fig. 3 is the structural representation of embodiment 3 said ester-containing tail gas purification recovery devices.
Fig. 4 is the structural representation of embodiment 4,5 said ester-containing tail gas purification recovery devices.
The specific embodiment
As shown in Figure 1, present embodiment is to utilize bottom inflow formula multistage purification recovery device for ester-containing tail gas according to the invention to handle the tail gas that contains tributyl 2-acetylcitrate.This exhaust gas cleaner comprises tower cap, body of the tower, air inlet pipe (16), escape pipe (5), goes up ester output pipe and following ester output pipe; The tower cap is made up of interior cap (1) and outer cap (2); Interior cap is circular cone shape with outer cap, and hollow is provided with third level water condensation coil pipe (3) between interior cap and the outer cap, and the frustum of a cone inclined-plane of interior cap is provided with passage (4); The circular cone table top of outer cap is communicated with its table top with escape pipe (5) and is provided with passage (4), is provided with ester output pipe (6) in tower cap bottom; Body of the tower is a cylinder; Inside is provided with long-pending ester district (7), first condenser coil (8), first pallet with holes (9), the first physics intercept layer (10), gas buffer region (11), second condenser coil (12), second pallet with holes (13), the second physics intercept layer (14) from lower to upper successively, is provided with gas buffer region (11) between the tower cap and the second physics intercept layer; The body of the tower bottom is provided with down ester output pipe (15), and air inlet pipe (16) is positioned at first condenser coil (8) below, top, long-pending ester district.The material of physics intercept layer is the porcelain ripple packing.
After tail gas enters into the body of the tower bottom through admission line; Air-flow upwards flows; Through the first order retracting device of being made up of the first water condensation coil pipe, first pallet with holes and the first physics intercept layer, the part ester class that contains in the tail gas forms drop and drips to long-pending ester district, tower body bottom; Remaining tail gas continues the second level retracting device that rises and form through by the second water condensation coil pipe, second pallet with holes and the second physics intercept layer after gas buffer region is assembled; Remaining tail gas passes the pore on the cap frustum of a cone inclined-plane in being located at after gas buffer region is assembled, after the condensation of third level water condensation coil pipe, the ester class that condensation is got off is discharged through the ester output pipe of tower cap bottom, and no ester air is discharged from escape pipe.After band ester tail gas purified recovery through device according to the invention, the most of Ester that contains in the tail gas was recovered, and air discharged has obtained purification.Through measuring, the tail gas clean-up rate reaches 98%.
As shown in Figure 2, present embodiment is that device of the present invention is used to purify the tail gas that contains ethyl acetate.The specific embodiment is with embodiment 1, and difference is that valve (6) and valve (17) are autocontrol valves, and position, long-pending ester district (10) is provided with liquid level observation port (18) in body of the tower (2) bottom, and the material of physics intercept layer is the Pall ring filler.Through measuring, the tail gas clean-up rate reaches 98.5%.
As shown in Figure 3, present embodiment is that device of the present invention is used to purify the tail gas that contains ATBC.The specific embodiment is with embodiment 2, and difference is that escape pipe (5) is provided with pressure valve (17), and the material of physics intercept layer is the Raschig ring filler.Through measuring, the tail gas clean-up rate reaches 98.4%.
As shown in Figure 4, present embodiment is that device of the present invention is used to purify the tail gas that contains butyl acetate.The specific embodiment is with embodiment 3, and difference is ester output pipe (6) and/or ester output pipe (15) is for can deposit ester U type bend pipe down, and the material of physics intercept layer is the becket intalox saddle.Through measuring, the tail gas clean-up rate reaches 98.5%.
As shown in Figure 4, present embodiment is that device of the present invention is used to purify the tail gas that contains glyceryl triacetate.The specific embodiment is with embodiment 3, and difference is that air inlet pipe (16) extends to the other end and its lower opening (19) of body of the tower, and the material of physics intercept layer is the metal corrugated plate filler.Through measuring, the tail gas clean-up rate reaches 99%.
Claims (10)
1. down air-inlet multistage purification recovery device for ester-containing tail gas; It is characterized in that: comprise tower cap, body of the tower, air inlet pipe (16), escape pipe (5), go up ester output pipe (6) and following ester output pipe (15); The tower cap is made up of interior cap (1) and outer cap (2); Interior cap all is circular cone shape with outer cap, and hollow and inside are provided with third level water condensation coil pipe (3) between interior cap and the outer cap, and the frustum of a cone inclined-plane of interior cap is provided with passage (4); The circular cone table top of outer cap is communicated with its table top with escape pipe (5) and is provided with passage (4), is provided with ester output pipe (6) in tower cap bottom; Body of the tower is a cylinder; Inside is provided with long-pending ester district (7), first condenser coil (8), first pallet with holes (9), the first physics intercept layer (10), gas buffer region (11), second condenser coil (12), second pallet with holes (13), the second physics intercept layer (14) from lower to upper successively, is provided with gas buffer region (11) between the tower cap and the second physics intercept layer; Following ester output pipe (15) is arranged on the body of the tower bottom; Air inlet pipe (16) is positioned at first condenser coil (8) below and is positioned at top, long-pending ester district (7).
2. down air-inlet multistage purification recovery device for ester-containing tail gas according to claim 1 is characterized in that: last ester output pipe (6) is or/and descend ester output pipe (15) or/and establish control valve (17) on the escape pipe (5).
3. down air-inlet multistage purification recovery device for ester-containing tail gas according to claim 1 is characterized in that: long-pending ester district (10) establishes liquid level observation port (18) in the body of the tower side.
4. down air-inlet multistage purification recovery device for ester-containing tail gas according to claim 2 is characterized in that: long-pending ester district (10) establishes liquid level observation port (18) in the body of the tower side.
5. according to any described down air-inlet multistage purification recovery device for ester-containing tail gas in the claim 1,2,3 or 4, it is characterized in that: air inlet pipe (16) extends to the other end of body of the tower, and extension lower opening (19).
6. according to any described down air-inlet multistage purification recovery device for ester-containing tail gas in the claim 1,2,3 or 4, it is characterized in that: go up ester output pipe (6) and/or following ester output pipe (15) for can deposit the ester bend pipe.
7. down air-inlet multistage purification recovery device for ester-containing tail gas according to claim 5 is characterized in that: go up ester output pipe (6) and/or following ester output pipe (15) for can deposit the ester bend pipe.
8. according to any described down air-inlet multistage purification recovery device for ester-containing tail gas in the claim 1,2,3 or 4, it is characterized in that: the first physics intercept layer and the second physics intercept layer are filled to one or more the mixture in porcelain ripple packing, Pall ring filler, Raschig ring filler, cascade ring filler, berl saddle, becket intalox saddle, the metal corrugated plate filler.
9. down air-inlet multistage purification recovery device for ester-containing tail gas according to claim 5 is characterized in that: the first physics intercept layer and the second physics intercept layer are filled to one or more the mixture in porcelain ripple packing, Pall ring filler, Raschig ring filler, cascade ring filler, berl saddle, becket intalox saddle, the metal corrugated plate filler.
10. down air-inlet multistage purification recovery device for ester-containing tail gas according to claim 6 is characterized in that: the first physics intercept layer and the second physics intercept layer are filled to one or more the mixture in porcelain ripple packing, Pall ring filler, Raschig ring filler, cascade ring filler, berl saddle, becket intalox saddle, the metal corrugated plate filler.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010159494XA CN101816840B (en) | 2010-04-29 | 2010-04-29 | Down air-inlet multistage purification recovery device for ester-containing tail gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010159494XA CN101816840B (en) | 2010-04-29 | 2010-04-29 | Down air-inlet multistage purification recovery device for ester-containing tail gas |
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| CN101816840A CN101816840A (en) | 2010-09-01 |
| CN101816840B true CN101816840B (en) | 2012-08-08 |
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| CN103894615B (en) * | 2012-12-25 | 2016-10-05 | 北京有色金属研究总院 | A kind of collection wax device of internal gradient structural porous foam metal |
| CN106045011A (en) * | 2016-08-15 | 2016-10-26 | 江苏裕隆环保有限公司 | Improved intercepting apparatus for suspended filler |
| CN108465315A (en) * | 2018-05-07 | 2018-08-31 | 河南省中原大化集团有限责任公司 | High pressure is passivated air compressor unit blowdown separating and reclaiming device and application process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531582A (en) * | 2009-01-06 | 2009-09-16 | 云南省玉溪市溶剂厂有限公司 | Method for preparing sodium diacetate by industrial waste |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531582A (en) * | 2009-01-06 | 2009-09-16 | 云南省玉溪市溶剂厂有限公司 | Method for preparing sodium diacetate by industrial waste |
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