CN207024674U - A kind of extractive distillation device in hydrofining process of crude benzene - Google Patents
A kind of extractive distillation device in hydrofining process of crude benzene Download PDFInfo
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- CN207024674U CN207024674U CN201720572454.5U CN201720572454U CN207024674U CN 207024674 U CN207024674 U CN 207024674U CN 201720572454 U CN201720572454 U CN 201720572454U CN 207024674 U CN207024674 U CN 207024674U
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- tower body
- steam
- benzene
- pipe
- extractive distillation
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Abstract
The utility model discloses the extractive distillation device in a kind of hydrofining process of crude benzene, including tower body and steam generator, the tower body bosom is provided with steam pipe vertically, the steam pipe connects the steam (vapor) outlet of steam generator by pipeline, the upper end side wall of the tower body is provided with condenser, and the condenser connects purified petroleum benzin case by defeated benzene pipe, and the lower sides of the tower body are provided with reboiler, the reboiler connects toluene case by pipeline, and the upper end of the tower body is provided with charging aperture.Extractive distillation device in the hydrofining process of crude benzene, the setting of coil pipe is preheated, the raw material of addition can tentatively be preheated, convenient follow-up distillation, the setting of umbrella baffle plate, facilitate raw material to be sufficiently spread out after entering, facilitate benzene to evaporate, steam jet is obliquely installed, benzene liquid is avoided to enter steam jet, the setting of reboiler, the benzene liquid for making evaporation insufficient evaporate and return to tower body by reboiling return duct again, ensure separation purity.
Description
Technical field
The utility model belongs to technical field of chemical, and in particular to the extraction in a kind of hydrofining process of crude benzene is steamed
Distillation unit.
Background technology
Benzene and toluene and dimethylbenzene are all very important industrial chemicals, the stone being mainly derived from petrochemical process
Coking crude benzene in oily benzene and coking industry, above-mentioned change crude benzol is by techniques such as purification ＆ isolations so as to obtaining pure benzene and first
Benzene.At present, the process for refining of coking crude benzene mainly uses hydrofinishing method, and the hydrogenation technique of coking crude benzene, it includes pre- advanced
The de- weight of row, heavy benzol and light benzene are separated into by crude benzol, then are hydrogenated with light benzene, and light benzene is carried out instead under the catalytic action of catalyst
Should, so as to obtain benzene, toluene and dimethylbenzene agent and other light hydrocarbon components, then by de- light processing, by above-mentioned mixture
In light components and reaction impurities removing, so as to obtain the mixtures such as the benzene of semi-finished product, toluene dimethylbenzene and non-aromatics,
Also known as hydrogenated oil, hydrogenated oil remove the non-aromatic component in hydrogenated oil by extraction rectification technique, obtain the mixed of benzene and toluene
The mixture of compound, benzene and toluene is passed through in benzene knockout tower, you can separates benzene and toluene.The extraction of existing benzene and toluene is steamed
Technique is evaporated, the primarily discrete tower of its equipment, after raw material enters knockout tower, after being exchanged heat in knockout tower with the steam being passed through,
Benzene is discharged from the top of knockout tower, straight after then being cooled down by return duct charge air cooler by entering backflash after condenser
Tap into purified petroleum benzin groove, and the dimethylbenzene after separating then is discharged by bottom and is sent to by reflux pump in toluene groove.On although
The technology stated can reach the purpose to product separation, and the technique of separation is all very ripe, still, in the production of reality
In, the number of trays in knockout tower is more, and the height of tower is higher, and tower diameter is just relatively thin by contrast, not only bad for the behaviour at scene
Make, and inferior separating effect.
Utility model content
The purpose of this utility model is in the extractive distillation device in a kind of hydrofining process of crude benzene is provided, with solution
State the problem of being proposed in background technology.
To achieve the above object, the utility model provides following technical scheme：A kind of extraction in hydrofining process of crude benzene
Distilling apparatus, including tower body and steam generator are taken, the tower body bosom is provided with steam pipe vertically, and the steam pipe passes through
Pipeline connects the steam (vapor) outlet of steam generator, and the side wall of the steam pipe is provided with steam jet, and the inside of the tower body is also set
There is umbrella baffle plate, the surface of the umbrella baffle plate is provided with small opening, and the upper end side wall of the tower body is provided with condenser, the condenser
Purified petroleum benzin case is connected by defeated benzene pipe, the lower sides of the tower body are provided with reboiler, and the reboiler connects toluene by pipeline
Case, the reboiler connect tower body by reboiling return duct, and the upper end of the tower body is provided with charging aperture.
Preferably, the steam jet is inclined in the side wall of steam pipe downwards.
Preferably, the upper end of the condenser connects tower body by muffler.
Preferably, one end of the charging aperture connection preheating coil pipe, the other end of the preheating coil pipe are connected inside tower body,
The upper end of the tower body is provided with preheating cabinet, and the preheating coil pipe is arranged in preheating cabinet.
Preferably, the temperature of the preheating cabinet is 60-75 DEG C.
Preferably, the length of the preheating coil pipe is not less than one meter.
Technique effect of the present utility model and advantage：Extractive distillation device in the hydrofining process of crude benzene, structure are closed
Reason, it is practical, the setting of coil pipe is preheated, the raw material of addition can tentatively be preheated, convenient follow-up distillation, umbrella baffle plate
Setting, facilitate raw material to be sufficiently spread out after entering, facilitate benzene to evaporate, steam jet is obliquely installed, and avoids benzene liquid from entering steam jet,
The setting of reboiler, the benzene liquid for making evaporation insufficient evaporate and return to tower body by reboiling return duct again, ensure separation purity.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is umbrella baffle arrangement schematic diagram of the present utility model；
Fig. 3 is preheating coil arrangement schematic diagram of the present utility model.
In figure：It is 1 tower body, 2 steam generators, 3 steam pipes, 4 steam jets, 5 umbrella baffle plates, 6 small openings, 7 condensers, 8 defeated
Benzene pipe, 9 purified petroleum benzin casees, 10 mufflers, 11 reboilers, 12 toluene casees, 13 reboiling return ducts, 14 charging apertures, 15 preheating cabinets, 16 preheatings
Coil pipe.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The utility model provides the extractive distillation device in a kind of hydrofining process of crude benzene as Figure 1-3, bag
Tower body 1 and steam generator 2 are included, the bosom of tower body 1 is provided with steam pipe 3 vertically, and the steam pipe 3 is connected by pipeline
The steam (vapor) outlet of steam generator 2, the side wall of the steam pipe 3 are provided with steam jet 4, and the steam jet 4 tilts downwards
It is arranged in the side wall of steam pipe 3, the inside of the tower body 1 is additionally provided with umbrella baffle plate 5, and the surface of the umbrella baffle plate 5 is provided with
Small opening 6, the upper end side wall of the tower body 1 are provided with condenser 7, and the upper end of the condenser 7 connects tower body 1 by muffler 10,
The condenser 7 connects purified petroleum benzin case 9 by defeated benzene pipe 8, and the lower sides of the tower body 1 are provided with reboiler 11, the reboiler
11 connect toluene case 12 by pipeline, and the reboiler 11 connects tower body 1, the upper end of the tower body 1 by reboiling return duct 13
Provided with charging aperture 14, one end of the connection of the charging aperture 14 preheating coil pipe 16, the other end connection tower body 1 of the preheating coil pipe 16
Inside, the upper end of the tower body 1 are provided with preheating cabinet 15, and the preheating coil pipe 16 is arranged in preheating cabinet 15, the preheating cabinet 15
Temperature be 60-75 DEG C, it is described preheating coil pipe 16 length be not less than one meter.
Operation principle：Raw material enters from charging aperture 14, is tentatively preheated by preheating cabinet 15, into after tower body 1, by steam
Steam caused by generator 2, carries out heating evaporation, and benzene enters condenser 7 after evaporation, is stored in after condensation in purified petroleum benzin case 9, first
The boiling point of benzene is more than 100 DEG C, will not evaporate, and is stored in after the processing of the reboiling of reboiler 11 in toluene case 12.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical scheme described in foregoing embodiments, or to which part technical characteristic
Progress equivalent substitution, all within the spirit and principles of the utility model, any modification, equivalent substitution and improvements made etc.,
It should be included within the scope of protection of the utility model.
Claims (6)
1. the extractive distillation device in a kind of hydrofining process of crude benzene, including tower body (1) and steam generator (2), its feature
It is：Tower body (1) bosom is provided with steam pipe (3) vertically, and the steam pipe (3) connects steam generator by pipeline
(2) steam (vapor) outlet, the side wall of the steam pipe (3) are provided with steam jet (4), and the inside of the tower body (1) is additionally provided with umbrella
Baffle plate (5), the surface of the umbrella baffle plate (5) are provided with small opening (6), and the upper end side wall of the tower body (1) is provided with condenser (7),
The condenser (7) connects purified petroleum benzin case (9) by defeated benzene pipe (8), and the lower sides of the tower body (1) are provided with reboiler (11),
The reboiler (11) connects toluene case (12) by pipeline, and the reboiler (11) connects tower body by reboiling return duct (13)
(1), the upper end of the tower body (1) is provided with charging aperture (14).
2. the extractive distillation device in a kind of hydrofining process of crude benzene according to claim 1, it is characterised in that：It is described
Steam jet (4) is inclined at downwards in the side wall of steam pipe (3).
3. the extractive distillation device in a kind of hydrofining process of crude benzene according to claim 1, it is characterised in that：It is described
The upper end of condenser (7) connects tower body (1) by muffler (10).
4. the extractive distillation device in a kind of hydrofining process of crude benzene according to claim 1, it is characterised in that：It is described
One end of charging aperture (14) connection preheating coil pipe (16), the other end connection tower body (1) of the preheating coil pipe (16) is internal, described
The upper end of tower body (1) is provided with preheating cabinet (15), and the preheating coil pipe (16) is arranged in preheating cabinet (15).
5. the extractive distillation device in a kind of hydrofining process of crude benzene according to claim 4, it is characterised in that：It is described
The temperature of preheating cabinet (15) is 60-75 DEG C.
6. the extractive distillation device in a kind of hydrofining process of crude benzene according to claim 4, it is characterised in that：It is described
The length for preheating coil pipe (16) is not less than one meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720572454.5U CN207024674U (en) | 2017-05-22 | 2017-05-22 | A kind of extractive distillation device in hydrofining process of crude benzene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720572454.5U CN207024674U (en) | 2017-05-22 | 2017-05-22 | A kind of extractive distillation device in hydrofining process of crude benzene |
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| Publication Number | Publication Date |
|---|---|
| CN207024674U true CN207024674U (en) | 2018-02-23 |
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ID=61479265
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720572454.5U Expired - Fee Related CN207024674U (en) | 2017-05-22 | 2017-05-22 | A kind of extractive distillation device in hydrofining process of crude benzene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207024674U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001177A (en) * | 2019-12-17 | 2020-04-14 | 安徽昊源化工集团有限公司 | Device for preventing polymerization of gas phase dead zone of reboiler in styrene rectification process |
| 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 |
-
2017
- 2017-05-22 CN CN201720572454.5U patent/CN207024674U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001177A (en) * | 2019-12-17 | 2020-04-14 | 安徽昊源化工集团有限公司 | Device for preventing polymerization of gas phase dead zone of reboiler in styrene rectification process |
| CN111001177B (en) * | 2019-12-17 | 2023-05-30 | 安徽昊源化工集团有限公司 | Device for preventing polymerization of reboiler gas phase dead zone in styrene rectification process |
| 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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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20190522 |