CN205368180U - Aromatic extraction device - Google Patents
Aromatic extraction device Download PDFInfo
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- CN205368180U CN205368180U CN201620170924.0U CN201620170924U CN205368180U CN 205368180 U CN205368180 U CN 205368180U CN 201620170924 U CN201620170924 U CN 201620170924U CN 205368180 U CN205368180 U CN 205368180U
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- full thermal
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- rectifying tower
- lateral line
- thermal coupled
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Abstract
The utility model relates to an aromatic extraction device, including buffer tank, full thermal coupling rectifying column, the buffer tank passes through the pipe connection extremely the middle part of full thermal coupling rectifying column is provided with pre -heater and feeding governing valve on the pipeline, the condenser is connected on full thermal coupling rectifying column upper portion, the return tank is connected to the condenser, the return tank is connected back full thermal coupling rectifying column upper portion, a sub -unit connection reboiler of full thermal rectification tower. The beneficial effects of the utility model are that, the device is novel in design reasonable, and the baffle will full the thermal coupling rectifying column and be separated and become toluene rectifying section, aromatic hydrocarbon predissociation section, side line ejection of compact section and public four parts of stripping section, under the prerequisite that reaches separation target purity, and the loss of energy consumption in can effectual reduction disengaging process, reduce equipment quantity, increased the economic benefits of enterprise's production.
Description
Technical field
This utility model relates to the separation technology field of aromatic hydrocarbons, particularly relates to a kind of aromatic extraction unit.
Background technology
Aromatic hydrocarbons is as a kind of important Organic Chemicals, in about 8,000,000 kinds of known organic compound, aromatic compound has accounted for the 30% of sum, usual Aromatics Production Technology is BTX(benzene, toluene and dimethylbenzene) production technology, the production scale of BTX is only second to ethylene and propylene, is one-level basic organic.BTX and derivant thereof are widely used in the production of the chemical products such as chemical fibre, plastics and rubber, and along with the sustainable development of textile industry and petrochemical industry, demand to BTX is ever-increasing trend, but, the energy consumption of aromatics seperation process accounts for about the 45% of whole art production process, how to effectively reduce the major issue that BTX energy consumption in separation process is encountered with equipment investment Ze Shi China arene industrial.
In traditional production technology, in three conventional tower direct sequence separation processes, intermediate species concentration first rectifying column reach on the column plate of tower reactor maximum after be gradually reduced, show as thermodynamic losses seriously and cannot avoid, additionally, there is also number of devices more, the not high defect of overall economic benefit.
How for above-mentioned Problems existing, efficient, the energy-conservation and economic separation realizing BTX, reduce equipment investment cost and become the key issue needing solution badly.
Summary of the invention
Technical problem to be solved in the utility model is, this device is novel in design rationally, full thermal coupled rectifying tower is separated into toluene rectifying section, aromatic hydrocarbons pre-separation section, lateral line discharging section and four parts of public stripping section by dividing plate, under the premise reaching separate targets purity, the loss of energy consumption in separation process can be effectively reduced；Decrease number of devices, add the economic benefit that enterprise produces.
For achieving the above object, this utility model adopts following technical proposals:
A kind of aromatic extraction unit, including surge tank, full thermal coupled rectifying tower, described surge tank is connected to the middle part of described full thermal coupled rectifying tower by pipeline, pipeline is provided with preheater and charging regulates valve, described full thermal coupled rectifying tower top connects condenser, described condenser connects return tank, and described return tank connects back to described full thermal coupled rectifying tower top；The bottom of described full thermal rectification tower connects a reboiler.
The technical solution of the utility model also includes, and described full thermal coupled rectifying tower is divided into toluene rectifying section, aromatic hydrocarbons pre-separation section, lateral line discharging section and public stripping section, and the middle part of tower is provided with a dividing plate.
The technical solution of the utility model also includes, and described aromatic hydrocarbons pre-separation section is provided with toluene lateral line discharging and dimethylbenzene lateral line discharging, and return tank is connected to aromatic hydrocarbons pre-separation section by pipeline.
The technical solution of the utility model also includes, and the internal actual plate of described full thermal coupled rectifying tower adds up to 83 pieces.
The technical solution of the utility model also includes, and described dividing plate is arranged between the 14-63 block column plate of full thermal coupled rectifying tower.
The technical solution of the utility model also includes, and described toluene rectifying section actual plate adds up to 13 pieces, the light component benzene of overhead extraction at full thermal coupled rectifying tower.
The technical solution of the utility model also includes, and described toluene lateral line discharging is arranged at the 21st piece of column plate place of described full thermal coupled rectifying tower, extraction toluene；Described dimethylbenzene lateral line discharging is arranged at the 36th piece of column plate place of described full thermal coupled rectifying tower, extraction dimethylbenzene.
The technical solution of the utility model also includes, and the number of actual plates of described public stripping section is 20 pieces, at extraction heavy constituent material at the bottom of tower.
The beneficial effects of the utility model are,
1, the dividing plate of the setting in full thermal coupled rectifying tower is divided into toluene rectifying section, aromatic hydrocarbons pre-separation section, lateral line discharging section and four parts of public stripping section, and tower self-energy coupling efficiency is high, and can repeatedly be used, and reduces operation energy consumption.
2, the use of full thermal coupled rectifying tower, effectively reduces intermediate species at the air-teturning mixed phenomenon at the bottom of tower, improves energy utilization efficiency.
3, the use of full thermal coupled rectifying tower, reduces the thermic load of reboiler, condenser nearly 30%, and most gross investment in off year (TAC) is saved up to more than 30%.
3, the full thermal coupled rectifying tower in this utility model instead of traditional three-tower rectification, for the separation of BTX component in aromatic hydrocarbons mixture, decreases number of devices, hence it is evident that reduces the energy loss separating BTX component, adds the economic benefit that enterprise produces.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is this tradition separation process schematic diagram.
Wherein, 1, full thermal coupled rectifying tower；1-1, toluene rectifying section；1-2, aromatic hydrocarbons pre-separation section；1-3, public stripping section；1-4, dividing plate；1-5, lateral line discharging section；2, surge tank；3, preheater；4, charging regulates valve；5, condenser；6, cooling sea water regulating valve；7, return tank；8, reflux pump；9, pump is regulated；10, pre-separation side regulates valve；11, lateral line discharging regulates valve；12, toluene discharging regulates valve；13, dimethylbenzene discharging regulates valve；14, reboiler；15, steam control valve；16, return valve；17, benzene column；18, toluene tower；19, benzenol hydrorefining.
Detailed description of the invention
In order to the technical characterstic of this programme is clearly described, below in conjunction with drawings and Examples, this utility model is further described.
A kind of aromatic extraction unit, as shown in Figure 1, including surge tank 2, full thermal coupled rectifying tower 1, described surge tank 2 is connected to the middle part of described full thermal coupled rectifying tower 1 by pipeline, pipeline is provided with preheater 3 and charging regulates valve 4, feeding temperature is 350K, described full thermal coupled rectifying tower 1 top connects condenser 5, condensed water cooled water regulating valve 6 eductor condenser 5, described condenser 5 connects return tank 7, described return tank 7 connects back to described full thermal coupled rectifying tower 1 top, and pipeline is provided with reflux pump 8 and return valve 16；The bottom of described full thermal rectification tower connects a reboiler 14, is regulated the quantity of steam entered in reboiler 14 by steam control valve 15.
Described full thermal coupled rectifying tower 1 is divided into toluene rectifying section 1-1, aromatic hydrocarbons pre-separation section 1-2, lateral line discharging section 1-5 and public stripping section 1-3, and is provided with a dividing plate 1-4 at the middle part of tower.
Being provided with toluene lateral line discharging and dimethylbenzene lateral line discharging on described aromatic hydrocarbons pre-separation section 1-2, return tank 7 is connected to aromatic hydrocarbons pre-separation section 1-2 by pipeline.
The internal actual plate of described full thermal coupled rectifying tower 1 adds up to 83 pieces, and operation pressure is 0.1MPa.
Described dividing plate 1-4 is arranged between the 14-63 block column plate of full thermal coupled rectifying tower 1.
Described toluene rectifying section 1-1 actual plate adds up to 13 pieces, and return tank 7 is at the light component benzene of overhead extraction of full thermal coupled rectifying tower 1.
Described toluene lateral line discharging is arranged at the 21st piece of column plate place of described full thermal coupled rectifying tower 1, extraction toluene, and is provided with toluene discharging adjustment valve 12 on discharging pipeline；Described dimethylbenzene lateral line discharging is arranged at the 36th piece of column plate place of described full thermal coupled rectifying tower 1, extraction dimethylbenzene, and is provided with dimethylbenzene discharging adjustment valve 13 on discharging pipeline.
The number of actual plates of described public stripping section 1-3 is 20 pieces, extraction heavy constituent material at the bottom of the tower of full thermal coupled rectifying tower 1.
Component in toluene rectifying section 1-1 column plate extraction is adjusted pump 9 and extracts out, regulates valve 10 again through pre-separation side and lateral line discharging regulates valve 11 and is assigned to aromatic hydrocarbons pre-separation section 1-2 and lateral line discharging section 1-5 by a certain percentage.
And traditional aromatic extraction unit, as shown in Figure 2, the buffered tank 2 of aromatic hydrocarbons to be separated enters preheater 3, is heated to after separating required temperature, regulates valve 4 through charging and regulates feed rate entrance benzene column 17, at overhead extraction benzene, mixture enters toluene tower 18 through overhead extraction, and at overhead extraction toluene, the mixture of extraction at the bottom of tower enters back into benzenol hydrorefining 19, it is overhead extraction dimethylbenzene at benzenol hydrorefining 19, extraction heavy component at the bottom of tower.Number of devices is many, and back-mixing at the bottom of tower seriously causes that energy consumption is high, and technological process is long, deficiency in economic performance.
This utility model can pass through existing techniques in realizing without the technical characteristic described, and does not repeat them here.Certainly; described above is not to restriction of the present utility model; this utility model is also not limited to the example above, the change done in essential scope of the present utility model of the art those of ordinary skill, remodeling, interpolation or replacing, also should belong to protection domain of the present utility model.
Claims (8)
1. an aromatic extraction unit, including surge tank, full thermal coupled rectifying tower, described surge tank is connected to the middle part of described full thermal coupled rectifying tower by pipeline, pipeline is provided with preheater and charging regulates valve, it is characterized in that, described full thermal coupled rectifying tower top connects condenser, and described condenser connects return tank, and described return tank connects back to described full thermal coupled rectifying tower top；The bottom of described full thermal rectification tower connects a reboiler.
2. a kind of aromatic extraction unit as claimed in claim 1, it is characterised in that described full thermal coupled rectifying tower is divided into toluene rectifying section, aromatic hydrocarbons pre-separation section, lateral line discharging section and public stripping section, and the middle part of tower is provided with a dividing plate.
3. a kind of aromatic extraction unit as claimed in claim 2, it is characterised in that described lateral line discharging section includes toluene lateral line discharging and dimethylbenzene lateral line discharging, and described toluene lateral line discharging is positioned at the top of described dimethylbenzene lateral line discharging.
4. a kind of aromatic extraction unit as claimed in claim 1 or 2, it is characterised in that the internal actual plate of described full thermal coupled rectifying tower adds up to 83 pieces.
5. a kind of aromatic extraction unit as claimed in claim 2, it is characterised in that described dividing plate is between the 14-63 block column plate of described full thermal coupled rectifying tower.
6. a kind of aromatic extraction unit as claimed in claim 2, it is characterised in that described toluene rectifying section actual plate adds up to 13 pieces.
7. a kind of aromatic extraction unit as claimed in claim 3, it is characterised in that described toluene lateral line discharging is arranged at the 21st piece of column plate place of described full thermal coupled rectifying tower, and described dimethylbenzene lateral line discharging is arranged at the 36th piece of column plate place of described full thermal coupled rectifying tower.
8. a kind of aromatic extraction unit as claimed in claim 2, it is characterised in that the number of actual plates of described public stripping section is 20 pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620170924.0U CN205368180U (en) | 2016-03-07 | 2016-03-07 | Aromatic extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620170924.0U CN205368180U (en) | 2016-03-07 | 2016-03-07 | Aromatic extraction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205368180U true CN205368180U (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620170924.0U Expired - Fee Related CN205368180U (en) | 2016-03-07 | 2016-03-07 | Aromatic extraction device |
Country Status (1)
| Country | Link |
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| CN (1) | CN205368180U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937968A (en) * | 2018-09-25 | 2020-03-31 | 中国石油化工股份有限公司 | Device and process for producing aromatic hydrocarbon product |
| CN111905397A (en) * | 2020-08-10 | 2020-11-10 | 张家港保税区慧鑫化工科技有限公司 | Dividing wall tower rectification system and technology |
-
2016
- 2016-03-07 CN CN201620170924.0U patent/CN205368180U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937968A (en) * | 2018-09-25 | 2020-03-31 | 中国石油化工股份有限公司 | Device and process for producing aromatic hydrocarbon product |
| CN110937968B (en) * | 2018-09-25 | 2022-03-08 | 中国石油化工股份有限公司 | Device and process for producing aromatic hydrocarbon product |
| CN111905397A (en) * | 2020-08-10 | 2020-11-10 | 张家港保税区慧鑫化工科技有限公司 | Dividing wall tower rectification system and technology |
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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: 20160706 Termination date: 20180307 |
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| CF01 | Termination of patent right due to non-payment of annual fee |