CN204932912U - A kind of stabilizer for benzene hydrogenation system - Google Patents
A kind of stabilizer for benzene hydrogenation system Download PDFInfo
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- CN204932912U CN204932912U CN201520668917.9U CN201520668917U CN204932912U CN 204932912 U CN204932912 U CN 204932912U CN 201520668917 U CN201520668917 U CN 201520668917U CN 204932912 U CN204932912 U CN 204932912U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The utility model discloses a kind of stabilizer for benzene hydrogenation system, comprise tower body and tower tray, tower body comprises rectifying section, stripping section and tower reactor section, the tower top outlet of rectifying section is connected with condenser and stable backflash in turn, the gaseous phase outlet stablizing backflash is connected with gaseous effluent, liquid-phase outlet refluxing opening is connected, the feed end of feed(raw material)inlet is connected with preheater, the bottom of rectifying section arranges wire packing, the bottom structured packing of stripping section, the steam inlet of tower reactor section is connected with the import and export of reboiler respectively with condensate outlet.The utility model not only production capacity improves 20 ~ 25%, the yield of product also improves about 10%, the steady quality of product, and create good operating condition for follow-up operation, have that structure is simple, working stability is reliable, simple to operate, hold manageable feature, also energy-saving and emission-reduction to greatest extent, reduction are polluted, and increase economic efficiency, are easy to promote the use of.
Description
Technical field
The utility model belongs to chemical mechanical equipment technical field, is specifically related to a kind of stabilizer for benzene hydrogenation system.
Background technology
At present, in the hydrogenation reaction system of coking crude benzene, the effect that stabilizer in hydrogenation unit has served crucial in hydrogenation reaction system, it can change the extraction position of liquid phase under steady state operation by stabilizer, remove the impurity such as low molecular hydrocarbon, carbide, sulfide that hydrogenation reaction generates in advance, thus improve the separative efficiency of benzene, toluene and dimethylbenzene, to extend the service life of extractant.Now, the normal stabilizer used in hydrogenation reaction system, float valve tray due to what all adopt at rectifying section and stripping section, find in the use procedure of reality, not only there is disposal ability low, separative efficiency is low, the problem that energy consumption is large, and the content of hydrogen sulfide is larger in the reactant of raw material crude benzol after hydrogenation reaction, damnous to tower body while, the production capacity affecting device that can be serious, finally cause the quality of product unstable, the material inlet quantity being exactly traditional stabilizer setting is in addition many, although have passed through heat exchange and intensification all in advance entering before in tower, make the material vaporization of part, feed(raw material)inlet too much can distillation operation in disorderly tower, temperature in tower is not easy to control, the operating temperature in tower can be made to raise, the load of gas phase in tower is caused to increase, the phenomenon having and rush tower can be caused in stabilizer, cause the DeGrain of separation, also have the impurity such as the sulfide produced exactly through only relying on follow-up desulphurization system process, without the task weight of desulphurization system, and the complicated component in sulfide, make removing of sulfide not thorough, the hydrogen sulfide gas simultaneously produced also can produce corrosion to the equipment in follow-up flow process, be unfavorable for the operation of lock out operation in tower, and the existence of on-condensible gas also can affect the heat transfer efficiency of follow-up heat transmission equipment in hydro carbons after being separated.Therefore, one will be aspired for stability, reliably, Operation and Maintenance is simple, desulfurized effect is obvious, product yield is high, product quality is high, effectively can improve production capacity in development, and the stabilizer for benzene hydrogenation system creating excellent operation condition for follow-up operation is desirability.
Summary of the invention
The purpose of this utility model is to provide one to aspire for stability, reliably, Operation and Maintenance is simple, desulfurized effect is obvious, product yield is high, product quality is high, effectively can improve production capacity, for follow-up operation creates the stabilizer for benzene hydrogenation system of excellent operation condition.
The purpose of this utility model realizes like this, comprise tower body and be arranged on the tower tray in tower body, tower body comprises rectifying section, stripping section and tower reactor section, rectifying section is provided with tower top outlet, feed(raw material)inlet and refluxing opening, tower top outlet is connected with condenser, the outlet of condenser is connected with stable backflash, the gaseous phase outlet stablizing backflash is connected with gaseous effluent, liquid-phase outlet is connected with refluxing opening with return duct by reflux pump, the feed end of feed(raw material)inlet is connected with preheater, discharge end is provided with liquid distribution trough, the bottom of rectifying section is provided with the high wire packing of 4 ~ 6m, the bottom of stripping section is provided with the high structured packing of 5 ~ 10m, tower reactor section is provided with interpolation mouth for subsequent use, steam inlet, tower bottom outlet, condensate outlet and desulfurization product outlet, steam inlet and condensate outlet are connected with the import and export of reboiler respectively.
The utility model is by the rational modification to tower body and internals, compare traditional stabilizer, not only production capacity improves 20 ~ 25%, the yield of rectifying afterproduct also improves about 10%, in addition have employed high flux and high efficiency structured packing, its efficiency be separated have also been obtained significant raising, the boiling range degree of coming to nothing between each product is increased, while raising production capacity, effective guarantee also improves the quality of product, and just hydrogen sulfide can be separated from liquid phase in tower reactor section, can ensure under the condition that product liquid cut is constant, hydrogen sulfide is separated completely from liquid distillate, the successful of desulfurization, ensure that in tower, the stable of lock out operation carries out, effectively reduce the particular/special requirement of follow-up equipment to material, improve the ability of follow-up flow process products of separated, also can not the heat exchange efficiency of follow-up equipment, for follow-up operation creates good operating condition, it is simple that the utility model has structure, working stability is reliable, simple to operate, hold manageable feature, also energy-saving and emission-reduction to greatest extent, reduce and pollute, increase economic efficiency, be easy to promote the use of.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of tower body;
In figure: 1-preheater, 2-tower body, 21-tower bottom outlet, 22-interpolation mouth for subsequent use, 23-structured packing, 24-stripping section, 25-wire packing, 26-rectifying section, 27-liquid distribution trough, 28-feed(raw material)inlet, 29-tower tray, 210-demister, 211-tower top outlet, 212-refluxing opening, 213-tower reactor section, 214-steam inlet, 215-condensate outlet 3-condenser, 4-gaseous effluent, 5-desulfurizing purifier, 6-stablizes backflash, 7-reboiler.
Detailed description of the invention
Be further described the utility model below in conjunction with accompanying drawing, but limited the utility model never in any form, any change done based on the utility model training centre or improvement, all belong to protection domain of the present utility model.
As shown in Fig. 1 ~ 2, the tower tray 29 that the utility model comprises tower body 2 and is arranged in tower body 1, tower body 1 comprises rectifying section 26, stripping section 24 and tower reactor section 213, rectifying section 26 is provided with tower top outlet 211, feed(raw material)inlet 28 and refluxing opening 212, tower top outlet 211 is connected with condenser 3, the outlet of condenser 3 is connected with stable backflash 6, the gaseous phase outlet stablizing backflash 6 is connected with gaseous effluent 4, liquid-phase outlet is connected with refluxing opening 212 with return duct by reflux pump, the feed end of feed(raw material)inlet 28 is connected with preheater 1, discharge end is provided with liquid distribution trough 27, the bottom of rectifying section 26 is provided with the high wire packing of 4 ~ 6m 25, the bottom of stripping section 24 is provided with the high structured packing of 5 ~ 10m 23, tower reactor section (213) is provided with interpolation mouth 22 for subsequent use, steam inlet 214, tower bottom outlet 21, condensate outlet 215 and desulfurization product outlet, steam inlet 214 is connected with the import and export of reboiler 7 respectively with condensate outlet 215.
Further, the gas outlet of described gaseous effluent 4 is also provided with desulfurizing purifier 5, is to the hydrogen sulfide gas being mixed into tower body top be removed, ensure the service life of follow-up heat transmission equipment, further alleviate the burden of follow-up desulphurization system.
In order to ensure the smooth discharge of the product liquid bottom tower body, described tower bottom outlet 21 place is provided with anti-swirl baffle.
Preferably, described tower tray 29 is the float valve tray of double overflow type, is because this float valve tray can be elevated, to keep the stable operation in tower in wider gas speed scope freely along with the increase and decrease of gas speed.
Further, the top of described rectifying section 26 is provided with demister 210, when being to prevent that in tower, operating gas velocity is larger, there will be tower top entrainment, the efficiency that impact is separated, and preferably, demister is porous material demister and glass fibre demister.
Further, described liquid distribution trough 27 is tank type liquid distributor, in order to raw material can be avoided to block or washed out by liquid distribution trough, cause sharply fluctuating of cell body liquid level, prevent the impact that gradient of liquid level is large, feed liquid is splashed on mass-transfer efficiency in separation process, to improve the uniformity of liquid distribution.
The course of work of the present utility model is: enter into tower body 2 in by feed(raw material)inlet 28 by the liquid hydrocarbon after gas separaion groove is separated after preheater 1 preheating, liquid hydrocarbon is after 27 of liquid distribution trough evenly sprays, can be evenly distributed on tower tray 29 by liquid hydrocarbon, then successively through tower tray 29, wire packing 25, after the separating treatment of tower tray 29 and structured packing 23, most of foreign gas in liquid hydrocarbon is removed all, after a part in hydrogenated oil after separation is flow into and is become steam by condensate outlet 215 in reboiler 7 after heating, be back in tower body 2 by steam inlet 214 again, thus as the thermal source of tower body 2 imurity-removal gas, after the liquid level of the hydrogenated oil in tower reactor section 213 exceedes the liquid level of setting, then discharged by tower bottom outlet 21, and the gas of the solution gas taken away from tower top outlet 211 and generation is condenser 3 after condensation, be sent in stable backflash 6, gas phase and liquid phase separation is carried out in stabilizer backflash 6, liquid phase after separation flows in gaseous effluent 4 and cools further and isolate a small amount of condensable liquid hydrocarbon, the liquid hydrocarbon produced is separated sent back to the seal pot of first piece of tower tray 29 of rectifying section 26 by refluxing opening 212 as phegma after reflux pump pressurization after again, waste gas is then discharged into the boundary of plant area after desulfurizing purifier 5.
Claims (6)
1. the stabilizer for benzene hydrogenation system, comprise tower body (2) and be arranged on the tower tray (29) in tower body (1), it is characterized in that: described tower body (1) comprises rectifying section (26), stripping section (24) and tower reactor section (213), rectifying section (26) is provided with tower top outlet (211), feed(raw material)inlet (28) and refluxing opening (212), tower top outlet (211) is connected with condenser (3), the outlet of condenser (3) is connected with stable backflash (6), the gaseous phase outlet stablizing backflash (6) is connected with gaseous effluent (4), liquid-phase outlet is connected with refluxing opening (212) with return duct by reflux pump, the feed end of feed(raw material)inlet (28) is connected with preheater (1), discharge end is provided with liquid distribution trough (27), the bottom of rectifying section (26) is provided with the high wire packing of 4 ~ 6m (25), the bottom of stripping section (24) is provided with the high structured packing of 5 ~ 10m (23), tower reactor section (213) is provided with interpolation mouth (22) for subsequent use, steam inlet (214), tower bottom outlet (21), condensate outlet (215) and desulfurization product outlet, steam inlet (214) is connected with the import and export of reboiler (7) respectively with condensate outlet (215).
2. a kind of stabilizer for benzene hydrogenation system according to claim 1, is characterized in that: the gas outlet of described gaseous effluent (4) is also provided with desulfurizing purifier (5).
3. a kind of stabilizer for benzene hydrogenation system according to claim 1, is characterized in that: described tower bottom outlet (21) place is provided with anti-swirl baffle.
4. a kind of stabilizer for benzene hydrogenation system according to claim 1, is characterized in that: the float valve tray that described tower tray (29) is double overflow type.
5. a kind of stabilizer for benzene hydrogenation system according to claim 1, is characterized in that: the top of described rectifying section (26) is provided with demister (210).
6. a kind of stabilizer for benzene hydrogenation system according to claim 1, is characterized in that: described liquid distribution trough (27) is tank type liquid distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520668917.9U CN204932912U (en) | 2015-09-01 | 2015-09-01 | A kind of stabilizer for benzene hydrogenation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520668917.9U CN204932912U (en) | 2015-09-01 | 2015-09-01 | A kind of stabilizer for benzene hydrogenation system |
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| CN204932912U true CN204932912U (en) | 2016-01-06 |
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| CN201520668917.9U Active CN204932912U (en) | 2015-09-01 | 2015-09-01 | A kind of stabilizer for benzene hydrogenation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106083515A (en) * | 2016-08-11 | 2016-11-09 | 中冶焦耐(大连)工程技术有限公司 | Stabilizer tower top material condensation refrigerated separation method and device in benzene hydrogenation process |
| CN111939584A (en) * | 2020-09-04 | 2020-11-17 | 中冶焦耐(大连)工程技术有限公司 | Process and system for evaporating crude benzene in benzene hydrogenation reaction system |
| CN114470834A (en) * | 2020-10-27 | 2022-05-13 | 湖南中岭化工有限责任公司 | Crude benzene hydrogenation extraction device |
-
2015
- 2015-09-01 CN CN201520668917.9U patent/CN204932912U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106083515A (en) * | 2016-08-11 | 2016-11-09 | 中冶焦耐(大连)工程技术有限公司 | Stabilizer tower top material condensation refrigerated separation method and device in benzene hydrogenation process |
| CN111939584A (en) * | 2020-09-04 | 2020-11-17 | 中冶焦耐(大连)工程技术有限公司 | Process and system for evaporating crude benzene in benzene hydrogenation reaction system |
| CN111939584B (en) * | 2020-09-04 | 2023-09-15 | 中冶焦耐(大连)工程技术有限公司 | Crude benzene evaporation process and system in benzene hydrogenation reaction system |
| CN114470834A (en) * | 2020-10-27 | 2022-05-13 | 湖南中岭化工有限责任公司 | Crude benzene hydrogenation extraction device |
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