CN203425546U - Alcohol recycling device for dicumyl peroxide crystallization - Google Patents
Alcohol recycling device for dicumyl peroxide crystallization Download PDFInfo
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- CN203425546U CN203425546U CN201320294160.2U CN201320294160U CN203425546U CN 203425546 U CN203425546 U CN 203425546U CN 201320294160 U CN201320294160 U CN 201320294160U CN 203425546 U CN203425546 U CN 203425546U
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Abstract
The utility model discloses an alcohol recycling device for dicumyl peroxide crystallization. The alcohol recycling device mainly comprises a rectifying tower, wherein a distillation outlet in the rectifying tower is connected with an overhead condenser and a tower kettle on the rectifying tower is connected with a reboiler; a top liquid condenser is connected to a top liquid cooler; an escape pipe is connected to the top liquid condenser; a top liquid groove is connected to the top liquid cooler and the top liquid condenser; and a centrifugal pump is connected to the top liquid groove for refluxing liquid to the rectifying tower. The alcohol recycling device has the following advantages that the temperature and the reflux quantity of the rectifying tower are effectively controlled to guarantee the best gas-liquid separation effect and the recycling quality of tower top alcohol, and the content of alcohol in the tower kettle is guaranteed to be minimally controlled.
Description
Technical field
The utility model relates to a kind of retracting device, specifically cumyl peroxide crystallization alcohol recovery 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 be 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 during by productions DCP product that alcohol reclaims, and for the alcohol of Crystallization Procedure, after water extracts, carries out air-distillation, reaches the object reducing costs.
Existing cumyl peroxide crystallization is reclaimed the general continuous atmospheric distillation that uses with alcohol, and low-concentration ethanol is entered to concentrate in atmospheric tower, reaches the effect of purification.There is in the prior art following shortcoming: 1, alcohol recovering effect is poor, 2, tower reactor alcohol content is higher.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art, provides a kind of concentrate concentration high alcohol recovery device.
For realizing above-mentioned utility model object, the technical solution adopted in the utility model is a kind of for cumyl peroxide crystallization alcohol recovery device, mainly comprise rectifying column, on rectifying column, distillate and mouthful be connected to tower top cooler, tower reactor is connected to reboiler, on the liquid cooler of top, be connected to top liquid cooling condenser, on top liquid cooler and top liquid cooling condenser, be connected to top liquid bath, on the liquid bath of top, be connected to centrifugal pump and be back 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.
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 alcohol.2, the content of assurance tower reactor alcohol is controlled at minimum.
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. tower top cooler,
4,5. overhead condenser,
6. tower reactor blow tank,
7. tower top medial launder,
8,9,10. control valve,
11. centrifugal pumps,
12. rectifying column distributors,
13. rectifying column metal packings.
The specific embodiment
Below in conjunction with specific embodiment, further illustrate the utility model, the present embodiment is implemented take technical solutions of the utility model under prerequisite, should understand these embodiment and only for the utility model is described, be not used in restriction scope of the present utility model.
As shown in Figure 1, a kind of for cumyl peroxide crystallization alcohol recovery device, mainly comprise top distributor, middle part distributor, bottom distributor, between each distributor 12, be provided with metal packing 13, inside is provided with Pressure gauge, thermometer.
On feed pipe, be connected with control valve, flowmeter 8, 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 tower reactor blow tank 6; Top is connected with top liquid cooler 3, then is connected with top liquid cooling condenser 4,5; Top liquid cooler 3 and top liquid cooling condenser 4,5 bottom discharges, and be connected with tower top medial launder 7, on top liquid bath 7, be connected to centrifugal pump 11 and be back 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 4,5, be connected with independent refrigerant, described refrigerant is≤-1 ℃ of propylene glycol solution.
Top liquid bath 7 is provided with blow-down pipe, and charging aperture is inserted to groove inner bottom part; Tower reactor blow tank 6 is provided with blow-down pipe, and charging aperture is inserted to groove inner bottom part.
On overhead condenser 4, there is blow-down pipe.
Operation principle of the present utility model is: mixed liquor is introduced by rectifying column middle part, and low-boiling component is easily vaporized and risen, the constantly condensation in steam of component that boiling point is high, and vapor portion condensation liberated heat is partly vaporized liquid 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, at tower top, obtains 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 alcohol that concentration is low is controlled to flow at 1.1～4 m through feed rate control valve 8
3/ h enters rectifying column 1, carries out continuous atmospheric distillation, and top temperature control is at 77～81 ℃, and still temperature control is at 85～102 ℃.Still liquid continuous discharge is in groove 6; Top gaseous phase material enters tower top medial launder 7 successively after cold 3, two cold 4, three cold 5 cooling condensations of rectifying column 1 one, by rectifying column reflux pump 11 parts, through overhead reflux control valve 9, controls capacity of returns at 2～12 m
3/ h enters rectifying column 1, and a part is controlled discharging through tower top medial launder Liquid level adjusting valve 10.
Example
Atmospheric distillation: the content of alcohol is: 85-90%.The process conditions of air-distillation and the results are shown in Table 1.
The process conditions of table 1 atmospheric distillation 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 alcohol; And the content that has guaranteed tower reactor alcohol is controlled at minimum.
With reference to specific embodiment, describe the utility model in detail above, obviously, in the situation that do not depart from the utility model scope defined in 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 (4)
1. a cumyl peroxide crystallization alcohol recovery device, it is characterized in that: mainly comprise rectifying column (1), on rectifying column (1), distillate and mouthful be connected to tower top cooler (3), tower reactor is connected to reboiler (2), on top liquid cooler (3), be connected to top liquid cooling condenser (4,5), on top liquid cooler (3) and top liquid cooling condenser (4,5), be connected to top liquid bath (7), on the liquid bath of top, (7) are connected to centrifugal pump (11) and are back to rectifying column (1).
2. 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 (13) between each distributor (12).
3. 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. retracting device according to claim 1, is characterized in that: described top liquid cooling condenser (4,5) has independent refrigerant, and this independent coolant media is≤-1 ℃ of propylene glycol solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320294160.2U CN203425546U (en) | 2013-05-27 | 2013-05-27 | Alcohol recycling device for dicumyl peroxide crystallization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320294160.2U CN203425546U (en) | 2013-05-27 | 2013-05-27 | Alcohol recycling device for dicumyl peroxide crystallization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203425546U true CN203425546U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320294160.2U Expired - Lifetime CN203425546U (en) | 2013-05-27 | 2013-05-27 | Alcohol recycling device for dicumyl peroxide crystallization |
Country Status (1)
| Country | Link |
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| CN (1) | CN203425546U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949078A (en) * | 2014-04-15 | 2014-07-30 | 苏州金牛精密机械有限公司 | Solvent distilling and recycling machine |
| CN104910059A (en) * | 2015-05-07 | 2015-09-16 | 中石化上海工程有限公司 | Dicumyl peroxide (DCP) apparatus circulating mother liquor recovery method |
-
2013
- 2013-05-27 CN CN201320294160.2U patent/CN203425546U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949078A (en) * | 2014-04-15 | 2014-07-30 | 苏州金牛精密机械有限公司 | Solvent distilling and recycling machine |
| CN103949078B (en) * | 2014-04-15 | 2017-05-24 | 泉州味盛食品有限公司 | Solvent distilling and recycling machine |
| CN107080964A (en) * | 2014-04-15 | 2017-08-22 | 葛云龙 | The higher solvent of the rate of recovery is distilled to recover machine and its method of work |
| CN104910059A (en) * | 2015-05-07 | 2015-09-16 | 中石化上海工程有限公司 | Dicumyl peroxide (DCP) apparatus circulating mother liquor recovery method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |
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| CX01 | Expiry of patent term |