CN203648114U - Cumene recovery device - Google Patents
Cumene recovery device Download PDFInfo
- Publication number
- CN203648114U CN203648114U CN201320293496.7U CN201320293496U CN203648114U CN 203648114 U CN203648114 U CN 203648114U CN 201320293496 U CN201320293496 U CN 201320293496U CN 203648114 U CN203648114 U CN 203648114U
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- Prior art keywords
- tower
- top liquid
- isopropylbenzene
- rectifying column
- condenser
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Abstract
The utility model discloses a cumene recovery device. The device mainly comprises a rectifying tower, wherein a distillation outlet on the rectifying tower is connected with a tower top cooler; a tower bottom is connected with a reboiler; a top liquid cooler is connected with a top liquid condenser; the top liquid condenser is connected with a vacuum buffer tank; the vacuum buffer tank is connected with a vacuum pump; the top liquid cooler and the top liquid condenser are connected with top liquid grooves; the top liquid grooves are connected with centrifugal pumps and liquid flows back to the rectifying tower; and reflux condensers are connected between the centrifugal pumps and the rectifying tower. The cumene recovery device has the advantages that the temperature of the rectifying tower and the quantity of reflux are effectively controlled, so that best gas-liquid separation effect is ensured, and the recovery quality of cumene at the tower top is ensured; and the content of the cumene in the tower kettle is controlled to the minimum.
Description
Technical field
The utility model relates to a kind of retracting device, specifically isopropylbenzene retracting device.
Background technology
Cumyl peroxide (DCP) is a kind of organic peroxide crosslinking agent, main as various olefin polymers and the crosslinking agent of copolymer (as polyethylene, haloflex, silicon rubber etc.) and the polymerization initiator of polystyrene, be also the curing agent of unsaturated polyester resin.After DCP is crosslinked, the physical property of polymer is greatly improved, its heat resistance, chemical resistance, resistance to pressure, crack resistance and mechanical strength all increase to some extent.DCP is widely used in the industries such as electric wire, shoemaking, building materials, and in recent years along with the continuous expansion in macromolecular material market, the demand of DCP increases year by year, and market potential is huge.
Industrial production DCP is take isopropylbenzene as raw material, by oxidation, isopropylbenzene is reacted into hydrogen phosphide cumene, and part hydrogen phosphide cumene is generated to dimethyl benzyl alcohol by reduction reaction, then dimethyl benzyl alcohol and hydrogen phosphide cumene carry out condensation reaction generation DCP.It is that the isopropylbenzene that each production link is collected when producing DCP product effectively reclaims that isopropylbenzene reclaims, and reaches the object reducing costs.
Relevant parameter: 152.4 ℃ of isopropylbenzene boiling points, 165 ℃ of methyl styrene boiling points, 202 ℃ of acetophenone boiling points, 202 ℃ of dimethyl benzyl alcohol boiling points.DCP boiling point is very high, but exceedes 100 ℃ of decomposition, exceedes 120 ℃ of accelerated decomposition.
There is in the prior art following shortcoming: 1, isopropylbenzene recovering effect is poor; 2, tower reactor isopropylbenzene content is higher.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art, and a kind of isopropylbenzene retracting device is provided.
For realizing above-mentioned utility model object, isopropylbenzene retracting device of the present utility model, mainly comprise rectifying column, on rectifying column, distillate and mouthful be connected to top liquid cooler, tower reactor is connected to reboiler, on the liquid cooler of top, be connected to top liquid cooling condenser, on top liquid cooling condenser, be connected to vacuum buffer tank, on vacuum buffer tank, be connected to vavuum pump, on top liquid cooler and top liquid cooling condenser, be connected to tower top medial launder, on tower top medial launder, be connected to reflux pump and be back to rectifying column, reflux pump is connected to reflux condenser to rectifying column.
Described rectifying column upper, middle and lower is provided with distributor, is provided with metal packing between distributor.
Described top liquid cooling apparatus has independent refrigerant, and this independent coolant media is≤33 ℃ of water.
Described top liquid condensing utensil has independent refrigerant, and this independent coolant media is≤-1 ℃ of propylene glycol solution.
Described reflux condenser has independent refrigerant, and this independent coolant media is≤-1 ℃ of propylene glycol solution.
The beneficial effects of the utility model are: 1, effectively control rectifying column temperature and capacity of returns, guarantee to obtain best gas-liquid separation effect, guarantee the recovery quality of tower top isopropylbenzene.2, guarantee the content of isopropylbenzene in tower reactor distillate.
Provided description is provided and will be more obviously seen the more suitable application area of the utility model.Should be appreciated that the description of this part and specific examples, only for explanation, do not limit scope of the present utility model.
Accompanying drawing explanation
By reference to the accompanying drawings, by preferred embodiment provided herein, can understand better the utility model.Accompanying drawing provided herein is for illustration purpose, and can not limit scope of the present utility model, in the accompanying drawings:
Fig. 1 is the utility model structural representation.
Reference numerals list:
1. rectifying column,
2. reboiler,
3. top liquid cooler,
4. top liquid cooling condenser,
5. reflux condenser,
6. tower reactor blow tank,
7. tower top medial launder,
8. vacuum buffer tank,
9. vavuum pump,
10,11,12,13. control valves,
14. reflux pumps,
15. rectifying column distributors,
16. rectifying column metal packings.
The specific embodiment
Below in conjunction with specific embodiment, further illustrate the utility model, the present embodiment is implemented under take technical solutions of the utility model as prerequisite, should understand these embodiment and only be not used in restriction scope of the present utility model for the utility model is described.
As shown in Figure 1, a kind of retracting device for isopropylbenzene, mainly comprises top distributor, middle part distributor, bottom distributor, between each distributor 15, is provided with metal packing 16, and inside is provided with Pressure gauge, thermometer.
On feed pipe, be connected with control valve, flowmeter 10, enter rectifying column 1 middle part; Tower bottom of rectifying tower is connected with reboiler 2, and thermal source is low-pressure steam.Bottom discharge pipe is connected with discharging control valve 11, then is connected with blow tank 6; Top is connected with top liquid cooler 3, being connected with top liquid cooling condenser 4, on top liquid cooling condenser 4, is connected with vacuum buffer tank again, is finally connected with vavuum pump; Top liquid cooler 3 and top liquid cooling condenser 4 bottom discharges, and be connected with tower top medial launder 7, on tower top medial launder 7, being connected to reflux pump 14 and being back to rectifying column 1, reflux pump 14 is connected to reflux condenser 5 to rectifying column 1.
On top liquid cooler 3, be connected with independent refrigerant, described refrigerant is≤33 ℃ of water; On top liquid cooling condenser 4, be connected with independent refrigerant, described refrigerant is≤-1 ℃ of propylene glycol solution; On reflux condenser 5, be connected with independent refrigerant, described refrigerant is≤-1 ℃ of propylene glycol solution.
Tower top medial launder 7 is provided with blow-down pipe, and charging aperture is inserted to groove inner bottom part, and carries out fluid-tight; Tower reactor blow tank 6 is provided with blow-down pipe, and charging aperture is inserted to groove inner bottom part, and carries out fluid-tight.
Rectifying column 1 has balance pipe to be connected with on tower reactor blow tank 6.
Operation principle of the present utility model is: mixed liquor is introduced by rectifying column middle part, the easily vaporization and rising of low-boiling component, and the high component of boiling point is by constantly condensation in steam, and vapor portion condensation liberated heat makes liquid part vaporization on column plate.In liquid phase, volatile component shifts in vapour phase, and in vapour phase, the component of difficult volatilization shifts in liquid phase.This vapour-liquid two-phase counter current contacting in tower, simultaneously carries out the transmission of heat and quality in multiple times, obtains at tower top the volatile components that content is high, and a part returns in tower and reflux (phegma), a part of as overhead distillate (product); From still liquid at the bottom of tower, obtain the difficulty volatilization heavy constituent that content is high, a part can be returned to reboiler and do tower bottoms circulation, and a part is as tower reactor heavy component (product) discharging.
The course of work of the present utility model is: the isopropylbenzene of concentration is controlled to flow at 0.8～2.4 m through feed rate control valve 10
3/ h enters rectifying column 1, carries out continuous rectification under vacuum, and top temperature control is at 48～70 ℃, and still temperature control is at 85～105 ℃.Still liquid is controlled continuous discharge in groove 6 by control valve 11; Top gaseous phase material enters tower top medial launder 7 successively after rectifying column 1 top liquid cooler 3, top liquid cooling condenser 4 cooling condensations, controls capacity of returns at 1～10 m by rectifying column reflux pump 14 parts through overhead reflux control valve 12
3/ h enters rectifying column 1, and a part is controlled discharging through tower top medial launder Liquid level adjusting valve 13.Rectifying column 1 vacuum pressure is≤4kP to be supplied with by rectifying tower vacuum pump 9.
Example
Rectification under vacuum: the content of isopropylbenzene: 85-90%.The process conditions of decompression distillation and the results are shown in Table 1.
The process conditions of table 1 rectification under vacuum and result
As can be seen from Table 1, by effective control rectifying column temperature and capacity of returns, obtain good gas-liquid separation effect, guaranteed the recovery quality of tower top isopropylbenzene; And the content that has guaranteed tower reactor isopropylbenzene is controlled at minimum.
Describe the utility model in detail with reference to specific embodiment above, obviously, in the case of the utility model scope defined in not departing from claims, can change and change.More specifically, preferred or favourable although aspects more of the present utility model are confirmed as in this article, the utility model needn't be limited to these preferred embodiments of the present utility model.
Claims (5)
1. an isopropylbenzene retracting device, it is characterized in that: mainly comprise rectifying column (1), on rectifying column (1), distillate mouth and be connected to top liquid cooler (3), tower reactor is connected to reboiler (2), on top liquid cooler (3), be connected to top liquid cooling condenser (4), on top liquid cooling condenser (4), be connected to vacuum buffer tank (8), on vacuum buffer tank (8), be connected to vavuum pump (9), on top liquid cooler (3) and top liquid cooling condenser (4), be connected to tower top medial launder (7), on tower top medial launder (7), be connected to reflux pump (14) and be back to rectifying column (1), reflux pump (14) is connected to reflux condenser (5) to rectifying column (1).
2. isopropylbenzene retracting device according to claim 1, is characterized in that: described rectifying column is provided with top distributor, middle part distributor, bottom distributor, is provided with metal packing (16) between each distributor (15).
3. isopropylbenzene retracting device according to claim 1, is characterized in that: described top liquid cooler (3) has independent refrigerant, and this independent coolant media is≤33 ℃ of water.
4. isopropylbenzene retracting device according to claim 1, is characterized in that: described top liquid cooling condenser (4) has independent refrigerant, and this independent coolant media is≤-1 ℃ of propylene glycol solution.
5. isopropylbenzene retracting device according to claim 1, is characterized in that: described reflux condenser (5) has independent refrigerant, and this independent coolant media is≤-1 ℃ of propylene glycol solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320293496.7U CN203648114U (en) | 2013-05-27 | 2013-05-27 | Cumene recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320293496.7U CN203648114U (en) | 2013-05-27 | 2013-05-27 | Cumene recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203648114U true CN203648114U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320293496.7U Expired - Lifetime CN203648114U (en) | 2013-05-27 | 2013-05-27 | Cumene recovery device |
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| Country | Link |
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| CN (1) | CN203648114U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788281A (en) * | 2015-05-07 | 2015-07-22 | 中石化上海工程有限公司 | Method for recovering circulating cumene of dicumyl peroxide (DCP) device |
| CN105502788A (en) * | 2015-12-31 | 2016-04-20 | 遵义鑫湘生物科技有限公司 | Gallate wastewater disposal system |
| CN107382650A (en) * | 2017-07-26 | 2017-11-24 | 江苏道明化学有限公司 | A kind of recovery method of isopropylbenzene |
| CN107648939A (en) * | 2017-10-17 | 2018-02-02 | 太仓塑料助剂厂有限公司 | The waste gas recovering device of cumyl peroxide |
| CN108958026A (en) * | 2017-05-27 | 2018-12-07 | 蓝星（北京）技术中心有限公司 | Optimal control method and system for heavy constituent separation system in Chemical Manufacture |
| CN114681943A (en) * | 2022-03-16 | 2022-07-01 | 中国石油化工股份有限公司 | Method for heating cumene recovery tower |
-
2013
- 2013-05-27 CN CN201320293496.7U patent/CN203648114U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788281A (en) * | 2015-05-07 | 2015-07-22 | 中石化上海工程有限公司 | Method for recovering circulating cumene of dicumyl peroxide (DCP) device |
| CN105502788A (en) * | 2015-12-31 | 2016-04-20 | 遵义鑫湘生物科技有限公司 | Gallate wastewater disposal system |
| CN108958026A (en) * | 2017-05-27 | 2018-12-07 | 蓝星（北京）技术中心有限公司 | Optimal control method and system for heavy constituent separation system in Chemical Manufacture |
| CN108958026B (en) * | 2017-05-27 | 2021-07-27 | 蓝星（北京）技术中心有限公司 | Optimized control method and system for heavy component separation system in chemical production |
| CN107382650A (en) * | 2017-07-26 | 2017-11-24 | 江苏道明化学有限公司 | A kind of recovery method of isopropylbenzene |
| CN107648939A (en) * | 2017-10-17 | 2018-02-02 | 太仓塑料助剂厂有限公司 | The waste gas recovering device of cumyl peroxide |
| CN114681943A (en) * | 2022-03-16 | 2022-07-01 | 中国石油化工股份有限公司 | Method for heating cumene recovery tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |
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| CX01 | Expiry of patent term |