CN204601661U - A kind of stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP - Google Patents
A kind of stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP Download PDFInfo
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- CN204601661U CN204601661U CN201520304231.1U CN201520304231U CN204601661U CN 204601661 U CN204601661 U CN 204601661U CN 201520304231 U CN201520304231 U CN 201520304231U CN 204601661 U CN204601661 U CN 204601661U
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- cyclone separator
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Abstract
The utility model discloses a kind of stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP, primarily of compositions such as falling film evaporator, stripper, centrifugal pump, cyclone separator, condenser, pans, discharging pumps.First treating material sends into falling film evaporator, by falling film evaporator material is warming up to about 180 DEG C and by part low boiling material evaporation.Material sends into stripper by centrifugal pump subsequently, steam enters by bottom stripper, water vapour and material adverse current in tower fully contacts, take and after packing layer, blocking solution ring, cyclone separator, enter condenser from stripper top outlet until the water in material and alcohol and carry out condensation recovery, the filled layer of DOTP drop, blocking solution ring, blast cap and cyclone separator that steam is carried secretly are separated and return stripper, and material is exported by bottoms material and sends.
Description
Technical field
The utility model relates to a kind of stripping vaporising device, particularly relates to a kind of stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP.
Background technology
DOTP (DOTP) product put into production the eighties, was a kind of environment-friendlyplasticizer plasticizer, and as the primary plasticizer of polyvinyl chloride (PVC) plastics.Because the toxicity of DOTP is low, security is high, and Waterproofing/oilproofing extraction performance is comparatively strong, is used always, allow to be used in medical PVC goods and various plastic toy by as nontoxic plasticizer.And widely used primary plasticizer dioctyl phthalate (DOP) always, because it has potential toxicity to human body, its use is restricted.
Current industrial production DOTP substantially adopts terephthalic acid (TPA) (TPA) method (direct esterification), TPA method be by isooctanol with PTA by certain amount of substance than dropping into esterifying kettle, add catalyst and react 10 ~ 12h at 170 ~ 230 DEG C, liquid acid number to be esterified is reduced to 0.2mgg
-1below, esterification terminal is.Esterification terminates the rear esterification waste heat that first utilizes and removes part alcohol excess, adds monoesters acid complete with unreacted in NaOH afterwards, reduces product acidity, and catalyst is hydrolyzed into the cotton-shaped titanium dioxide of solid, soluble in water, separates from ester.Under reduced vacuum state, pass into the steam stripped mode of steam afterwards water remaining in neutralization &washing operation and alcohol are cleaned out, again active carbon, diatomite are added in the thick ester after stripping, adsorb the pigment in thick ester, impurity etc., finally carry out filtering at filter and namely obtain pure product.
In stripping process, most factory adopts in still, vacuumizes the method directly passing into steam stripping, adopts this kind of technique to carry out stripping and mainly there is following several problem: it is lower that (1) carries out stripping production efficiency at reactor.(2) reactor equipment investment is larger.
Summary of the invention
For the problems referred to above, the utility model aims to provide a kind of stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP, water, octanol serialization can be separated fast from DOTP in production process.
The technical solution of the utility model is: a kind of stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP, is composed in series primarily of falling film evaporator, centrifugal pump, stripper, cyclone separator, condenser, pans.
Described falling film evaporator outlet is connected with centrifugal pump inlet, outlet of centrifugal pump is connected with the material inlet of stripper, stripper top outlet is connected with cyclone separator, Cyclone outlet is connected with condenser, cyclone separator outlet at bottom is connected with liquid return hole bottom stripper, and bottom stripper, material outlet is connected with discharging pump.
Described falling film evaporator bottom is provided with observes visor and liquid level gauge.
Described stripper is sieve-plate tower, is provided with the material outlet at products export, liquid return hole, steam distributor pipe, column plate, charging aperture, packing layer, blocking solution ring, blast cap and top stripper is by bottom to top successively.
Described steam distributor pipe is annular, be distributed with downwards, upwards, inwardly, outside venthole.
Described blocking solution ring is ring baffle, and circumferentially outside is distributed with downspout.
Described blast cap is conical.
Beneficial effect:
(1) owing to being provided with ring baffle, packing layer and blocking solution ring in stripper inside, whirlwind liquid knockout device is provided with in stripper outlet, when the DOTP that carries secretly of steam is by ring baffle, packing layer and blocking solution ring, major part entrainment can by gear back-steam stripper body, tiny DOTP drop and mist return bottom stripper after being then again separated by whirlwind liquid knockout, and therefore this stripping system DOTP loses little.
(2) annular steam distributor pipe and each to all having perforate, ensure that fully contacting of steam and DOTP, improves steam stripping efficiency.
(3) the present invention adopts continuous production method, can control by full automation, is suitable for large-scale industrial and produces.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, 1 is falling film evaporator, and 2 is centrifugal pump, and 3 is stripper, and 4 is cyclone separator, and 5 is condenser, and 6 is discharging pump, and 7 is pans.
Fig. 2 is the structural representation of stripper of the present utility model.
Wherein, 8 is steam distributor pipe, and 9 is column plate, and 10 is charging aperture, and 11 is packing layer, and 12 is blocking solution ring, and 13 is material outlet, and 14 is blast cap, and 15 is liquid return hole, and 16 is products export.
Detailed description of the invention
Below by way of embodiments and drawings the utility model is described further.
For the stripping vaporising device in environment-friendlyplasticizer plasticizer DOTP production process, be made up of falling film evaporator 1, centrifugal pump 2, stripper 3, cyclone separator 4, condenser 5, discharging pump 6, pans 7 etc.Falling film evaporator 1 exports and is connected with centrifugal pump 2 import, centrifugal pump 2 exports and is connected with the material inlet of stripper 3, stripper 3 top exit is connected with cyclone separator 4, and cyclone separator 4 exports and is connected with condenser 5, and the outlet of stripper 3 bottoms material is connected with discharging pump 6.
Described stripper 3 is sieve-plate tower, material outlet 13 is provided with at the top of stripper, between charging aperture 10 and material outlet 13, be provided with packing layer 11, blocking solution ring 12 and blast cap 14, bottom stripper, be provided with steam distributor pipe 8, liquid return hole 15 and products export 16.
Described steam distributor pipe 8 is annular, be distributed with downwards, upwards, inwardly, outside venthole, gas outlet diameter 2mm.Blocking solution ring 12 is ring baffle, and its periphery is distributed with downspout.Blast cap 14 is conical.Falling film evaporator 1 bottom is provided with observes visor and liquid level gauge.
Embodiment:
According to design of the present utility model, design a set of DOTP dealcoholysis stripper plant, its structure is as Fig. 1.Falling film evaporator 1 adopts heat exchange area 40 ㎡.Stripper 3 is sieve-plate tower, diameter 600mm, total height 7000mm, sieve plate spacing 400mm.Steam distributor pipe 8 diameter 25mm, has the venthole of all directions, venthole diameter 2mm.Condenser 5 heat exchange area is 40 ㎡.Material sends into falling film evaporator by centrifugal pump, and inlet amount per hour is 500kg, by being warming up to 180 DEG C after falling film evaporator.Send into stripper 3 by centrifugal pump 2 subsequently, pass into 180 DEG C of steam be about 200kg by steam distributor pipe 8 is per hour.Due to the existence of water vapour, reduce the boiling point of octanol in material, steam carries the component that distills out and after packing layer, blocking solution ring, cyclone separator, enters condenser from stripper top outlet and carry out condensation recovery, and the filled layer of DOTP drop, ring baffle, blocking solution ring and cyclone separator that steam is carried secretly are separated and return stripper through liquid return hole.DOTP sends to next workshop section by discharging pump bottom stripper 6.Regulate vapor flow according to DOTP flash-point detection case, flash-point then tunes up flow lower than 210 DEG C, and flash-point then turns flow down higher than 210 DEG C.
Claims (7)
1., for the stripping vaporising device that environment-friendlyplasticizer plasticizer DOTP produces, it is characterized in that, be composed in series primarily of falling film evaporator (1), centrifugal pump (2), stripper (3), cyclone separator (4), condenser (5), pans (7).
2. the stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP according to claim 1, it is characterized in that, described falling film evaporator (1) outlet is connected with centrifugal pump (2) import, centrifugal pump (2) outlet is connected with the material inlet of stripper (3), stripper (3) top exit is connected with cyclone separator (4), cyclone separator (4) outlet is connected with condenser (5), cyclone separator (4) outlet at bottom is connected with liquid return hole bottom stripper (15), and the outlet of stripper (3) bottoms material is connected with discharging pump (6).
3. the stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP according to claim 1, is characterized in that, described falling film evaporator (1) bottom is provided with observes visor and liquid level gauge.
4. the stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP according to claim 1, it is characterized in that, described stripper (3) is sieve-plate tower, is provided with the material outlet (13) at products export (16), liquid return hole (15), steam distributor pipe (8), column plate (9), charging aperture (10), packing layer (11) blocking solution ring (12), blast cap (14) and top stripper (3) is by bottom to top successively.
5. the stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP according to claim 4, is characterized in that, described steam distributor pipe (8) be annular, be distributed with downwards, upwards, inwardly, outside venthole.
6. the stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP according to claim 4, it is characterized in that, described blocking solution ring (12) is ring baffle, and circumferentially outside is distributed with downspout.
7. the stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP according to claim 4, is characterized in that, described blast cap (14) is conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520304231.1U CN204601661U (en) | 2015-05-12 | 2015-05-12 | A kind of stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520304231.1U CN204601661U (en) | 2015-05-12 | 2015-05-12 | A kind of stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP |
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| CN204601661U true CN204601661U (en) | 2015-09-02 |
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| CN201520304231.1U Expired - Fee Related CN204601661U (en) | 2015-05-12 | 2015-05-12 | A kind of stripping vaporising device produced for environment-friendlyplasticizer plasticizer DOTP |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107055733A (en) * | 2017-04-07 | 2017-08-18 | 苏州安利化工有限公司 | Plasticizer waste water administering method |
| CN110215729A (en) * | 2018-03-01 | 2019-09-10 | 无锡科伦达化工热力装备有限公司 | A kind of plate distillation column |
| CN112569627A (en) * | 2020-11-23 | 2021-03-30 | 福建春达化工有限公司 | Plasticizer stripping system and stripping method |
| CN112915567A (en) * | 2021-01-28 | 2021-06-08 | 浙江毅聚新材料有限公司 | Method and system for separating and recovering mixed liquid of white oil, dichloromethane and water |
| WO2021137712A1 (en) * | 2019-12-30 | 2021-07-08 | Публичное Акционерное Общество "Сибур Холдинг" (Пао "Сибур Холдинг") | Device and method for purifying complex esters |
| RU2800387C1 (en) * | 2019-12-30 | 2023-07-20 | Публичное открытое акционерное общество "СИБУР Холдинг" (ПАО "СИБУР Холдинг") | Device and method for purifying esters |
-
2015
- 2015-05-12 CN CN201520304231.1U patent/CN204601661U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055733A (en) * | 2017-04-07 | 2017-08-18 | 苏州安利化工有限公司 | Plasticizer waste water administering method |
| CN110215729A (en) * | 2018-03-01 | 2019-09-10 | 无锡科伦达化工热力装备有限公司 | A kind of plate distillation column |
| CN110215729B (en) * | 2018-03-01 | 2021-06-29 | 无锡科伦达化工热力装备有限公司 | Plate-type rectifying tower |
| WO2021137712A1 (en) * | 2019-12-30 | 2021-07-08 | Публичное Акционерное Общество "Сибур Холдинг" (Пао "Сибур Холдинг") | Device and method for purifying complex esters |
| RU2800387C1 (en) * | 2019-12-30 | 2023-07-20 | Публичное открытое акционерное общество "СИБУР Холдинг" (ПАО "СИБУР Холдинг") | Device and method for purifying esters |
| CN112569627A (en) * | 2020-11-23 | 2021-03-30 | 福建春达化工有限公司 | Plasticizer stripping system and stripping method |
| CN112915567A (en) * | 2021-01-28 | 2021-06-08 | 浙江毅聚新材料有限公司 | Method and system for separating and recovering mixed liquid of white oil, dichloromethane and water |
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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: 20150902 Termination date: 20170512 |
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| CF01 | Termination of patent right due to non-payment of annual fee |