CN108126364A - A kind of rectifying still for dioctyl terephthalate production - Google Patents
A kind of rectifying still for dioctyl terephthalate production Download PDFInfo
- Publication number
- CN108126364A CN108126364A CN201810077300.8A CN201810077300A CN108126364A CN 108126364 A CN108126364 A CN 108126364A CN 201810077300 A CN201810077300 A CN 201810077300A CN 108126364 A CN108126364 A CN 108126364A
- Authority
- CN
- China
- Prior art keywords
- dioctyl terephthalate
- rectifying still
- autoclave body
- terephthalate production
- gas distribution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/02—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in boilers or stills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a kind of rectifying stills for dioctyl terephthalate production, and including autoclave body, autoclave body top is equipped with feed inlet, and lower part is equipped with slag-drip opening, heating duct frame is equipped in autoclave body, and heating duct frame upper end is equipped with one layer of porous plate.Rectifying still disclosed by the invention for dioctyl terephthalate production, it is simple in structure, the mist generated during reaction can be effectively removed, homogeneous heating, operating cost is low.
Description
Technical field
The present invention relates to a kind of chemical industry equipment, particularly a kind of rectifying stills for dioctyl terephthalate production.
Background technology
Dioctyl terephthalate (DOTP) is a kind of primary plasticizer of function admirable of polyvinyl chloride (PVC) plastics.
It has heat-resisting, cold-resistant, difficult volatilization, anti-extraction, flexibility compared with currently used diisooctyl phthalate (DOP)
With electrical insulation capability it is good the advantages that, show that excellent persistence, resistance to soap be aqueous and low-temperature pliability in product.Because it is waved
Hair property is low, and electric wire temperature resistant grade requirement can be fully met using DOTP, can be widely applied to resistance to 70 °C of CABLE MATERIALSs (international electricity
Work committee IEC standard) and other various PVC flexible articles in.DOTP other than being largely used to the plasticizer of CABLE MATERIALS, PVC,
It can also be used for the production of artificial leather film.In addition, with excellent intermiscibility, it can also be used to acrylic nitrile derivates, polyvinyl alcohol contracting
The plasticizer of butyraldehyde, nitrile rubber, nitrocellulose etc..It can be additionally used in the plasticizer of synthetic rubber, coating additive, accurate instrument
Device lubricant, lubricant additive can also be used as the softening agent of paper.
But in prior art production, stage of rectification is due to the physical property of material, it may appear that entrainment phenomenon；
And in distillation process, the heating of rectifying still uses mostly to be added in high vacuum environment by deep fat or comb
Heat, heating effect is poor, and will appear line clogging phenomenon.
Invention content
Goal of the invention：In view of the deficiencies of the prior art, the invention discloses one kind can effectively remove mist, homogeneous heating
The efficient rectifying still for dioctyl terephthalate production.
Technical solution：The invention discloses a kind of rectifying still for dioctyl terephthalate production, including autoclave body, kettle
Body top is equipped with feed inlet, and lower part is equipped with slag-drip opening, heating duct frame is equipped in autoclave body, and heating duct frame upper end is equipped with more than one layer
Orifice plate.
Wherein, the heating duct frame be one group of hollow stainless steel tube being arranged in parallel equidistantly arranged, steel pipe one end
It is connected with gas distribution frame, the other end is connected with beehive, and gas distribution frame is connected with air inlet pipe, and beehive is connected with air outlet pipe.
Wherein, the array aperture that equidistantly densely covered aperture is 5mm on the porous plate.
The rectifying still is in use, steam is discharged into gas distribution frame by air inlet pipe, by the uniform gas distribution of gas distribution frame to equidistantly
The hollow stainless steel tube being arranged in parallel of arrangement, heats rectifying still, then by throat-fed, if one section of reaction
There is mist in time, is filtered by the aperture on porous plate, removes mist.
Advantageous effect：Rectifying still disclosed by the invention for dioctyl terephthalate production, simple in structure, Neng Gouyou
The mist generated during effect removal reaction, homogeneous heating, operating cost are low.
Description of the drawings
Fig. 1 is the structure diagram of the rectifying still produced for dioctyl terephthalate.
Specific embodiment
The present invention is further explained below in conjunction with the accompanying drawings.
The invention discloses a kind of rectifying still for dioctyl terephthalate production, including autoclave body 1,1 top of autoclave body
Equipped with feed inlet 2, lower part is equipped with slag-drip opening 3, and heating duct frame 4 is equipped in autoclave body 1, and 4 upper end of heating duct frame is equipped with more than one layer
Orifice plate 5.
Wherein, the heating duct frame 4 be one group of hollow stainless steel tube 6 being arranged in parallel equidistantly arranged, steel pipe one
End is connected with gas distribution frame 7, and the other end is connected with beehive 8, and gas distribution frame 7 is connected with air inlet pipe 9, and beehive 8 and air outlet pipe 10 connect
It is logical.
Wherein, the array aperture that equidistantly densely covered aperture is 5mm on the porous plate 5.
The rectifying still is in use, steam is discharged into gas distribution frame by air inlet pipe, by the uniform gas distribution of gas distribution frame to equidistantly
The hollow stainless steel tube being arranged in parallel of arrangement, heats rectifying still, then by throat-fed, if one section of reaction
There is mist in time, is filtered by the aperture on porous plate, removes mist.
Rectifying still disclosed by the invention for dioctyl terephthalate production, it is simple in structure, it can effectively remove anti-
At once the mist generated, homogeneous heating, operating cost are low.
The present invention provides a kind of thinking and method of the rectifying still for dioctyl terephthalate production, specific implementations
There are many method and approach of the technical solution, and the above is only the preferred embodiment of the present invention, it is noted that for this skill
For the those of ordinary skill in art field, various improvements and modifications may be made without departing from the principle of the present invention,
These improvements and modifications also should be regarded as protection scope of the present invention, and each component part being not known in the present embodiment can be used existing
Technology is realized.
Claims (3)
1. a kind of rectifying still for dioctyl terephthalate production, it is characterized in that, including autoclave body (1), autoclave body (1) top is set
There is feed inlet (2), lower part is equipped with slag-drip opening (3), is equipped with heating duct frame (4) in autoclave body (1), heating duct frame (4) upper end is set
There is one layer of porous plate (5).
2. a kind of rectifying still for dioctyl terephthalate production according to claim 1, it is characterized in that, it is described to add
Thermal conductivity pipe support (4) is one group of hollow stainless steel tube (6) being arranged in parallel equidistantly arranged, and steel pipe one end and gas distribution frame (7) are even
Logical, the other end is connected with beehive (8), and gas distribution frame (7) is connected with air inlet pipe (9), and beehive (8) is connected with air outlet pipe (10).
3. a kind of rectifying still for dioctyl terephthalate production according to claim 1, it is characterized in that, it is described more
The array aperture that equidistantly densely covered aperture is 5mm on orifice plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077300.8A CN108126364A (en) | 2018-01-26 | 2018-01-26 | A kind of rectifying still for dioctyl terephthalate production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077300.8A CN108126364A (en) | 2018-01-26 | 2018-01-26 | A kind of rectifying still for dioctyl terephthalate production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108126364A true CN108126364A (en) | 2018-06-08 |
Family
ID=62400973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810077300.8A Pending CN108126364A (en) | 2018-01-26 | 2018-01-26 | A kind of rectifying still for dioctyl terephthalate production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108126364A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509792A (en) * | 2002-12-23 | 2004-07-07 | 佟庆杰 | Distilling still |
| CN201505459U (en) * | 2009-09-17 | 2010-06-16 | 常熟市瑞凯添加剂科技有限公司 | Horizontal distilling still for preparing diacetone |
| CN203417482U (en) * | 2013-07-04 | 2014-02-05 | 安徽圣诺贝化学科技有限公司 | Horizontal type distillation kettle |
| CN204891266U (en) * | 2015-06-29 | 2015-12-23 | 安徽广信农化股份有限公司 | A xylol rectifying still for salicylonitrile production technology |
-
2018
- 2018-01-26 CN CN201810077300.8A patent/CN108126364A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1509792A (en) * | 2002-12-23 | 2004-07-07 | 佟庆杰 | Distilling still |
| CN201505459U (en) * | 2009-09-17 | 2010-06-16 | 常熟市瑞凯添加剂科技有限公司 | Horizontal distilling still for preparing diacetone |
| CN203417482U (en) * | 2013-07-04 | 2014-02-05 | 安徽圣诺贝化学科技有限公司 | Horizontal type distillation kettle |
| CN204891266U (en) * | 2015-06-29 | 2015-12-23 | 安徽广信农化股份有限公司 | A xylol rectifying still for salicylonitrile production technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180608 |