CN205216250U - Rectifier unit of using in crude benzene hydrogenation production technology - Google Patents
Rectifier unit of using in crude benzene hydrogenation production technology Download PDFInfo
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- CN205216250U CN205216250U CN201521088154.7U CN201521088154U CN205216250U CN 205216250 U CN205216250 U CN 205216250U CN 201521088154 U CN201521088154 U CN 201521088154U CN 205216250 U CN205216250 U CN 205216250U
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- distillation column
- extraction distillation
- extraction
- reboiler
- heating tube
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Abstract
The utility model provides a rectifier unit of using in crude benzene hydrogenation production technology, the export at extraction distillation column top and the import intercommunication of top of the tower cooler, the export of top of the tower cooler and the one end of counter -flow vat intercommunication, the other end of counter -flow vat and the backward flow mouth at extraction distillation column top intercommunication, the export of counter -flow vat lower part and the import intercommunication of first delivery pump, the rich extractant export of extraction distillation column bottom and the import intercommunication of second delivery pump, the poor extractant export of extraction distillation column bottom and the import intercommunication of reboiler, the export and the extraction distillation column intercommunication of reboiler, add the heating pipe on extraction distillation column's outer wall, the heating pipe is spirally twisted on extraction distillation column's outer wall. Extraction distillation column is unanimous by last temperature under to, can prevent effectively in the non - aromatic hydrocarbon that the top of the tower overflowed that heavier component returns extraction distillation column's extraction section, simple structure, convenient to use easily under the effect that flows back.
Description
Technical field
The utility model belongs to rectifying device technical field, relates to the rectifier unit in a kind of crude benzole hydrogenation production technology.
Background technology
In hydrogenated oil, be separated the method that non-aromatics generally adopts at present, be divided into liquid-phase extraction method and the large class technique of extractive distillation method two by processing mode; Liquid-phase extraction technique is applicable to the wider raw material of excursion, especially, when non-aromatics content is very high, it has some superiority in energy consumption, but technological process is longer, number of devices is various, this just brings series of problems such as construction investment is large, operating maintenance is difficult, extractant loading is large.Extractive distillation technological process is short, number of devices is few, existing extractive distillation technique, its equipment comprises extraction distillation column C-101, backflash D-101, tower top cooler E-101, reboiler E-102, pump P-102, pump P-101, raw mixture hydrogenated oil in extraction distillation column through extractant extractive distillation, overhead extraction non-aromatics, at the bottom of tower, rich extractant sends into recovery tower through the effect of pump P-102.Reclaim overhead extraction aromatic hydrocarbons, poor extractant at the bottom of tower returns extraction tower and recycles.Although above-mentioned technology all can meet the quality requirement to product, and technique is all very ripe, but it is more owing to being separated the required number of plates, about 80 polylith column plates, and stripping section due to liquid phase load less, tower diameter is comparatively thin, and on-the-spot employee operates to cause extraction distillation column to be unfavorable in height.Higher than about 20 meters, other rectifying column in whole device, be easy to the phenomenon that the loss of generation middle heat causes heat supply deficiency because full tower is higher, thus cause component heavier in the non-aromatics of tower top effusion under the effect of backflow, easily return the extraction section of extraction distillation column.
Summary of the invention
The utility model, in order to overcome the defect of prior art, devises the rectifier unit in a kind of crude benzole hydrogenation production technology, and the bulk temperature of extraction distillation column is consistent, and the energy is saved in heat exchange.
The concrete technical scheme that the utility model is taked is: the rectifier unit in a kind of crude benzole hydrogenation production technology, comprise extraction distillation column, backflash, tower top cooler, reboiler, first delivery pump, second delivery pump, the sidewall of extractive distillation top of tower is provided with extractant entrance, sidewall in the middle part of extraction distillation column is provided with hydrogenated oil entrance, the outlet of extractive distillation top of tower and the inlet communication of tower top cooler, the outlet of tower top cooler is communicated with one end of backflash, the other end of backflash is communicated with the refluxing opening of extractive distillation top of tower, the outlet of backflash bottom and the inlet communication of the first delivery pump, the rich extractant outlet of extractive distillation tower bottom and the inlet communication of the second delivery pump, the poor extractant outlet of extractive distillation tower bottom and the inlet communication of reboiler, the outlet of reboiler is communicated with extraction distillation column, key is: on the outer wall of extraction distillation column, set up heating tube, heating tube is coiled coil on the outer wall of extraction distillation column.
The head end of described heating tube is fixedly connected with the outer wall of reboiler one end, and the end of heating tube is communicated with the head end of heating tube after coiled coil successively on reboiler with extraction distillation column.
Delivery pump is provided with between the head end of described heating tube and end.
Described heating tube is provided with thermometer.
Described extractant porch and hydrogenated oil porch are all provided with valve.
The beneficial effects of the utility model are: the heating tube setting up coiled coil on the outer wall of extraction distillation column, make extraction distillation column temperature from top to bottom consistent, component heavier in the non-aromatics that can effectively prevent tower top from overflowing easily returns the extraction section of extraction distillation column under the effect of backflow, structure is simple, easy to use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In accompanying drawing, 1, extraction distillation column, 2, backflash, 3, tower top cooler, 4, reboiler, the 5, first delivery pump, the 6, second delivery pump, 7, extractant entrance, 8, hydrogenated oil entrance, 9, heating tube, 10, valve.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated:
Specific embodiment, as shown in Figure 1, rectifier unit in a kind of crude benzole hydrogenation production technology, comprise extraction distillation column 1, backflash 2, tower top cooler 3, reboiler 4, first delivery pump 5, second delivery pump 6, the sidewall at extraction distillation column 1 top is provided with extractant entrance 7, the sidewall in the middle part of extraction distillation column 1 is provided with hydrogenated oil entrance 8, extractant entrance 7 place and hydrogenated oil entrance 8 place are all provided with valve 10, more convenient to operate, more safe and reliable.The outlet at extraction distillation column 1 top and the inlet communication of tower top cooler 3, the outlet of tower top cooler 3 is communicated with one end of backflash 2, the other end of backflash 2 is communicated with the refluxing opening at extraction distillation column 1 top, the outlet of backflash 2 bottom and the inlet communication of the first delivery pump 5, rich extractant outlet bottom extraction distillation column 1 and the inlet communication of the second delivery pump 6, poor extractant outlet bottom extraction distillation column 1 and the inlet communication of reboiler 4, the outlet of reboiler 4 is communicated with extraction distillation column 1, the outer wall of extraction distillation column 1 sets up heating tube 9, heating tube 9 coiled coil on the outer wall of extraction distillation column 1.
As to further improvement of the utility model, the head end of heating tube 9 is fixedly connected with the outer wall of reboiler 4 one end, and the end of heating tube 9 is communicated with the head end of heating tube 9 after coiled coil successively on reboiler 4 with extraction distillation column 1.Heating tube 9 and reboiler 4 form heat exchange, can save the energy.
As to further improvement of the utility model, between the head end of heating tube 9 and end, be provided with delivery pump.Heat medium can be made to circulate more smooth and easy, firing rate faster evenly.
As to further improvement of the utility model, heating tube 9 is provided with thermometer, convenient temperature of checking at any time in heating tube 9.
Claims (5)
1. the rectifier unit in a crude benzole hydrogenation production technology, comprise extraction distillation column (1), backflash (2), tower top cooler (3), reboiler (4), first delivery pump (5), second delivery pump (6), the sidewall at extraction distillation column (1) top is provided with extractant entrance (7), the sidewall at extraction distillation column (1) middle part is provided with hydrogenated oil entrance (8), the outlet at extraction distillation column (1) top and the inlet communication of tower top cooler (3), the outlet of tower top cooler (3) is communicated with one end of backflash (2), the other end of backflash (2) is communicated with the refluxing opening at extraction distillation column (1) top, the outlet of backflash (2) bottom and the inlet communication of the first delivery pump (5), the rich extractant outlet of extraction distillation column (1) bottom and the inlet communication of the second delivery pump (6), the poor extractant outlet of extraction distillation column (1) bottom and the inlet communication of reboiler (4), the outlet of reboiler (4) is communicated with extraction distillation column (1), it is characterized in that: on the outer wall of extraction distillation column (1), set up heating tube (9), heating tube (9) coiled coil on the outer wall of extraction distillation column (1).
2. the rectifier unit in a kind of crude benzole hydrogenation production technology according to claim 1, it is characterized in that: the head end of described heating tube (9) is fixedly connected with the outer wall of reboiler (4) one end, the end of heating tube (9) is communicated with the head end of heating tube (9) successively after the upper coiled coil of reboiler (4) and extraction distillation column (1).
3. the rectifier unit in a kind of crude benzole hydrogenation production technology according to claim 2, is characterized in that: be provided with delivery pump between the head end of described heating tube (9) and end.
4. the rectifier unit in a kind of crude benzole hydrogenation production technology according to claim 1, is characterized in that: described heating tube (9) is provided with thermometer.
5. the rectifier unit in a kind of crude benzole hydrogenation production technology according to claim 1, is characterized in that: described extractant entrance (7) place and hydrogenated oil entrance (8) place are all provided with valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521088154.7U CN205216250U (en) | 2015-12-24 | 2015-12-24 | Rectifier unit of using in crude benzene hydrogenation production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521088154.7U CN205216250U (en) | 2015-12-24 | 2015-12-24 | Rectifier unit of using in crude benzene hydrogenation production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205216250U true CN205216250U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521088154.7U Expired - Fee Related CN205216250U (en) | 2015-12-24 | 2015-12-24 | Rectifier unit of using in crude benzene hydrogenation production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205216250U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569003A (en) * | 2018-12-31 | 2019-04-05 | 江西石华精细化工科技协同创新有限公司 | A kind of method of purification of trimethyl aluminium crude product |
| 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
- 2015-12-24 CN CN201521088154.7U patent/CN205216250U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569003A (en) * | 2018-12-31 | 2019-04-05 | 江西石华精细化工科技协同创新有限公司 | A kind of method of purification of trimethyl aluminium crude product |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 057750 Guantao County New Chemical Industrial Park in Handan, Hebei province (Guantao) Patentee after: Hebei chemical Limited by Share Ltd Address before: 057750 Guantao County New Chemical Industrial Park in Handan, Hebei province (Guantao) Patentee before: HEBEI RONGTE CHEMICAL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20181224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |