CN202576367U - System for removing benzene homologues from coke oven gas - Google Patents
System for removing benzene homologues from coke oven gas Download PDFInfo
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- CN202576367U CN202576367U CN 201220059037 CN201220059037U CN202576367U CN 202576367 U CN202576367 U CN 202576367U CN 201220059037 CN201220059037 CN 201220059037 CN 201220059037 U CN201220059037 U CN 201220059037U CN 202576367 U CN202576367 U CN 202576367U
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- packed bed
- hypergravity
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- rotary packed
- benzene
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Abstract
A system suitable for removing benzene homologues from coke oven gas includes a hypergravity rotating packed bed, wherein a liquor inlet and a liquor outlet of the hypergravity rotating packed bed are respectively connected to a barren liquor trough and a rich liquor trough through pipelines, a first pump is mounted between the hypergravity rotating packed bed and the barren liquor trough, a second pump is mounted between the hypergravity rotating packed bed and the rich liquor trough, a gas inlet and a gas outlet of the hypergravity rotating packed bed are respectively connected to a gas pipeline, and a third pump, a benzene distillation tower, a cooler and a fourth pump are sequentially mounted between the rich liquor trough and the barren liquor trough. The cross-flow type hypergravity rotating packed bed is the core of the device, so that the cross-flow contact of gas and liquor can avoid the phenomenon of flooding due to an excessively large gas volume; the content of benzene homologues in coke oven gas can be reduced to below 1g/m<3> once for all; and the occupied area of the device is only 1/10 of that of a benzene washing tower.
Description
Technical field
The utility model relates to a kind of system that removes benzene series thing in the coke-oven gas, is applicable to the purification of coking industry coke-oven gas and the recovery of benzene series thing.
Background technology
In coking or steel industry; An important ring of coke oven gas purification is the benzene series thing that removes in the coke-oven gas; Domestic most enterprises adopt washing oil to wash the benzene device to carry out the benzene series thing and remove; This device is at the huge benzene top of tower of washing the washing oil spray line to be installed; Coal gas gets into from washing the benzene tower bottom, contacts with flushing liquor is reverse, absorbs high boiling materials such as lower boiling charing hydrogen compound such as benzene,toluene,xylene and cyclopentadiene in the coal gas and organic sulfide, vinylbenzene, benzene coumarone with washing oil.This method causes assimilated efficiency low because the gas-to-liquid contact face is limited, and plant area is big, and energy consumption is high.
At present; High-gravity rotating bed reactor drum as important reinforcement gas-liquid mass transfer; In a plurality of chemical units, be applied, for example, a kind of equipment that removes hydrogen sulfide in the industrial gasses of announcing in the Chinese patent 2006200223555.9; This equipment is used for removing the hydrogen sulfide of industrial gaseous waste, is exactly high-gravity rotating bed a kind of concrete application form.High-gravity rotating bed core is loaded with the rotor of the high speed rotating of filler for the rotating bed inner chamber.Rotor is in genvironments telling under the slew rope, and liquid is cut into tiny drop, brin or liquid film, has improved gas-liquid mass transfer available ratio surface and rate of mass transfer greatly.
The utility model content
To above-mentioned situation; The utility model is intended to utilize high-gravity technology; A kind of system and method that is fit to remove benzene series thing in the coke-oven gas is provided; Can overcome and existing wash that benzene tower assimilated efficiency is low, floor space is big, the high deficiency of running cost, this device can disposablely be removed to 1g/m with benzene series thing in the coke-oven gas
3Below, take up an area of to be merely and wash 1/10 of benzene tower.
The technical scheme of the utility model is,
A kind of system that removes benzene series thing in the coke-oven gas; It is characterized in that; Comprise that hypergravity is rotary packed bed; Said hypergravity is rotary packed bed to have fluid inlet, leakage fluid dram, inlet mouth and venting port totally four communication ports; Fluid inlet that said hypergravity is rotary packed bed and leakage fluid dram are connected respectively to lean solution groove and rich solution groove through pipeline; And at said hypergravity between the rotary packed bed and lean solution groove, said hypergravity is rotary packed bed and the rich solution groove between first pump and second pump are installed, inlet mouth and venting port that said hypergravity is rotary packed bed are connected respectively to gas line, and the 3rd pump, benzene steaming tower, water cooler and the 4th pump are installed between said rich solution groove and lean solution groove successively in proper order.
Rotary packed bed static housing and the dynamic rotation axis of comprising of said hypergravity; Wherein, Motor rotates through moving packing layer of rotation axis pipe racks and demist layer, and liquid is input to fluid pipeline by first pump and through behind the aperture on the fluid pipeline, liquid throws out casing through packing layer under centrifugal action; The liquid that is thrown out of is by outside the leakage fluid dram discharger; On casing, be provided with support ring, be respectively equipped with large-scale sliding rail between said support ring and packing layer and the demist layer, be provided with small-sized sliding rail between said filler internal layer and the rotation central siphon; The rotating speed of rotation axis was 100r/min-2000r/min during said hypergravity was rotary packed bed.
The beneficial effect of the utility model is, provides a kind of coke-oven gas that is applicable to wash the industrial production system of benzene, is used for removing coke-oven gas benzene series thing.The core of this device is that the hypergravity of cross-current type is rotary packed bed, and gas liquid cross-flow contact is difficult for need not between sparge pipe and packing layer, to leave than large space because of the excessive generation liquid flooding of tolerance phenomenon, disposable benzene series thing in the coke-oven gas is removed to 1g/m
3Below, take up an area of to be merely and wash 1/10 of benzene tower.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is one of rotary packed bed structural representation of hypergravity;
Fig. 3 is two of the rotary packed bed structural representation of hypergravity.
Among the figure: 11 first pumps, 12 second pumps, 13 the 3rd pumps, 14 the 4th pumps, 2 hypergravities are rotary packed bed; 21 housings, 22 rotation axiss, 23 packing layers, 24 demist layers, 25 apertures; 26 support rings, 27 large-scale sliding rails, 28 small-sized sliding rails, 29 motors; 3 lean solution grooves, 4 rich solution grooves, 5 benzene steaming towers, 6 water coolers.
Embodiment
Like Fig. 1～shown in Figure 3, the utility model relates to a kind of system that removes benzene series thing in the coke-oven gas, is applicable to the purification of coking industry coke-oven gas and the recovery of benzene series thing.System mainly comprises the rotary packed bed and rich solution regenerating unit of hypergravity; The gas-liquid of hypergravity in rotary packed bed realized more fully under the hypergravity effect, mass transfer faster; Improve coke-oven gas greatly and washed benzene efficient; And regenerating unit can be realized the regeneration of benzole wash oil, and rich solution can be recycled after benzene is handled through taking off.The liquid flooding phenomenon has been avoided in the rotary packed bed employing cross-flow contact of hypergravity in the utility model, has reduced the size of packing layer, has dwindled the plant area area, and energy-saving effect is obvious.The rich solution regenerating unit adopts debenzolizing tower, can realize recycling of flushing liquor.Specific as follows:
A kind of system that removes benzene series thing in the coke-oven gas comprises that hypergravity is rotary packed bed 2, has fluid inlet, leakage fluid dram, inlet mouth and venting port totally four communication ports on the shell of hypergravity rotary packed bed 2, can be connected with other interfaces through flange.Rotary packed bed static housing 21 and the dynamic rotation axis 22 of comprising of said hypergravity; Wherein, motor 29 rotates through moving packing layer 23 of rotation axis pipe racks and demist layer 24, wherein; Motor rotates through moving packing layer 23 of rotation axis pipe racks and demist layer 24; Liquid is input to fluid pipeline by first pump and through behind the aperture 25 on the fluid pipeline, liquid throws out casing through packing layer 23 under centrifugal action, and the liquid that is thrown out of is by outside the leakage fluid dram discharger.On casing 21, be provided with support ring 26, be respectively equipped with large-scale sliding rail 27 between support ring 26 and packing layer 23 and the demist layer 24, be provided with small-sized sliding rail 28 between filler internal layer and the rotation central siphon; The rotating speed of rotation axis was 100-2000r/min during said hypergravity was rotary packed bed.The fluid inlet of hypergravity rotary packed bed 2 and leakage fluid dram are connected respectively to lean solution groove 3 and rich solution groove 4 through pipeline; And at said hypergravity between the rotary packed bed and lean solution groove, said hypergravity is rotary packed bed and the rich solution groove between first pump 11 and second pump 12 are installed; The inlet mouth and the venting port of hypergravity rotary packed bed 2 are connected respectively to gas line; Order is installed the 3rd pump 13, benzene steaming tower 5, water cooler 6 and the 4th pump 14 successively between rich solution groove and lean solution groove, so can realize the circulation of benzole wash oil liquid.
Working process is following:
Step 1 starts all pumps simultaneously, and the lean solution lean solution (25-30 ℃) that contains in the low lean solution groove of benzene degree is got to the rotary packed bed inside of hypergravity through pump and fluid inlet;
Step 2 feeds untreated rich benzene coke-oven gas (28-35 ℃) to the rotary packed bed inlet mouth of said hypergravity, and the coke-oven gas after the processing is discharged back and next clean unit UNICOM through venting port;
In the above-mentioned steps,
Rich benzene coke-oven gas and lean solution way of contact with gas liquid cross-flow in hypergravity is rotary packed bed are adsorbed; Lean solution after the exchange absorption becomes rich solution after pump and liquid outlet are rejected in the rich solution groove; After heat exchange and tube furnace heating, reach more than 200 ℃, rich solution gets into benzene steaming tower again, then through making rich solution be reduced to lean solution at the benzene steaming tower internal reaction; The product that the benzene steaming tower cat head comes out is the benzene series thing; After water at low temperature is fully cooled off, (be lower than 25 ℃) and get into the benzene-type products groove, be lean solution at the bottom of the benzene steaming tower tower, lean solution is cooled to below 50 ℃ through supercooler after discharging at the bottom of the benzene steaming tower tower again; For use through being pumped into oil-poor groove then, the benzene liquid (debenzolized oil) that takes off wherein can be recycled.
In the above-mentioned steps, the rotary packed bed inlet mouth of this hypergravity feeds rich benzene coke-oven gas, venting port and next clean unit UNICOM.The rotary packed bed fluid inlet of hypergravity links to each other with the lean solution groove through pump; Leakage fluid dram links to each other with the rich solution groove through pump; The liquid exit of rich solution groove is beaten the feed(raw material)inlet to benzene steaming tower through pump, and lean solution is cooled to below 50 ℃ through supercooler earlier at the bottom of the benzene steaming tower tower, again through being pumped into oil-poor groove.
The way of contact of the high-gravity rotating bed employing gas liquid cross-flow in this device; Motor drives packing layer, the rotation of demist layer through rotation axis; Liquid is imported fluid pipeline with pump; Through the aperture on the liquid-inlet pipeline, under centrifugal action, throw out the casing housing through packing layer, the liquid that is thrown out of is by outside the leakage fluid dram discharger.Be provided with large-scale sliding rail between support ring and packing layer and the demist layer; Be provided with small-sized sliding rail between filler internal layer and the liquid-inlet pipeline, form the dynamic seal structure, after guaranteeing that gas is by the inlet mouth input; Can get into by the rear end from the packing layer front end and get rid of, contact with the liquid cross-flow.
During work, open motor and adjust rotating speed, between 100-2000r/min, adjust usually according to containing benzene concentration in pending gas flow and the coke-oven gas.It is rotary packed bed that coke-oven gas gets into hypergravity through gas feed, and through the packing layer of high speed rotating, through lean solution see pump squeeze into liquid-inlet pipeline vertically by lean solution for gas; Be sprayed at the packing layer inboard uniformly through the aperture on the liquid-inlet pipeline, when lean solution touched the packing layer of high speed rotating, moment was torn; And changed original heading; In powerful centrifuge field, lean solution and coke-oven gas are accomplished the transient absorption to the benzene series thing in the coke-oven gas under high turbulence, strong blended effect, and the coke-oven gas that removes the benzene series thing gets into the demist layer; After the small amount of liquid separation of carrying secretly, get rid of from pneumatic outlet.The rich solution that absorbs the benzene series thing is got rid of entering rich solution groove through leakage fluid dram.Rich solution is sent into the lean solution groove and is recycled after taking off the benzene processing.
Debenzolized oil in the present embodiment is different in different stage address, according to the difference that includes benzene concentration, wherein comprises rich solution, lean solution and takes off title such as benzene liquid.
Embodiment recited above describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; This area person skilled all should expand as in the determined protection domain of the utility model claims the various distortion and the improvement of the utility model.
Claims (2)
1. system that removes benzene series thing in the coke-oven gas; It is characterized in that; Comprise hypergravity rotary packed bed (2); Said hypergravity rotary packed bed (2) has fluid inlet, leakage fluid dram, inlet mouth and venting port totally four communication ports; The fluid inlet of said hypergravity rotary packed bed (2) and leakage fluid dram are connected respectively to lean solution groove (3) and rich solution groove (4) through pipeline; And at said hypergravity between the rotary packed bed and lean solution groove, said hypergravity is rotary packed bed and the rich solution groove between first pump (11) and second pump (12) are installed, the inlet mouth and the venting port of said hypergravity rotary packed bed (2) are connected respectively to gas line, and the 3rd pump (13), benzene steaming tower (5), water cooler (6) and the 4th pump (14) are installed between said rich solution groove and lean solution groove successively in proper order.
2. a kind of system that removes benzene series thing in the coke-oven gas according to claim 1; It is characterized in that; Rotary packed bed static housing (21) and the dynamic rotation axis (22) of comprising of said hypergravity, wherein, motor rotates through moving packing layer (23) of rotation axis pipe racks and demist layer (24); After liquid is input to fluid pipeline and passes through the aperture on the fluid pipeline by first pump; Liquid throws out casing through packing layer (23) under centrifugal action, the liquid that is thrown out of is provided with support ring (26) by outside the leakage fluid dram discharger on casing (21); Be respectively equipped with large-scale sliding rail (27) between said support ring (26) and packing layer (23) and the demist layer (24), be provided with small-sized sliding rail (28) between said filler internal layer and the rotation central siphon; The rotating speed of rotation axis was 100r/min-2000r/min during said hypergravity was rotary packed bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220059037 CN202576367U (en) | 2012-02-22 | 2012-02-22 | System for removing benzene homologues from coke oven gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220059037 CN202576367U (en) | 2012-02-22 | 2012-02-22 | System for removing benzene homologues from coke oven gas |
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| Publication Number | Publication Date |
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| CN202576367U true CN202576367U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220059037 Expired - Fee Related CN202576367U (en) | 2012-02-22 | 2012-02-22 | System for removing benzene homologues from coke oven gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500324A (en) * | 2019-01-31 | 2020-08-07 | 恒华源化工设备(武汉)有限公司 | System for removing hydrogen sulfide in coke oven gas |
-
2012
- 2012-02-22 CN CN 201220059037 patent/CN202576367U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500324A (en) * | 2019-01-31 | 2020-08-07 | 恒华源化工设备(武汉)有限公司 | System for removing hydrogen sulfide in coke oven gas |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20170222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |