CN101612544B - Prepolycondensating reactor device - Google Patents
Prepolycondensating reactor device Download PDFInfo
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- CN101612544B CN101612544B CN 200910085295 CN200910085295A CN101612544B CN 101612544 B CN101612544 B CN 101612544B CN 200910085295 CN200910085295 CN 200910085295 CN 200910085295 A CN200910085295 A CN 200910085295A CN 101612544 B CN101612544 B CN 101612544B
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Abstract
The invention relates to a prepolycondensating reactor device, comprising a shell. A clapboard is arranged in the shell, and divides the shell into an upper cavity and a lower cavity; the middle part of the clapboard is provided with an isolation cylinder extending upwards; the upper part of the isolation cylinder is provided with a guide valve communicating the upper cavity and the lower cavity; gas in the upper part of the upper cavity enters the lower cavity through the guide valve; the lower part of the isolation cylinder or the clapboard is provided with a trapping valve communicating the upper cavity and the lower cavity; and liquid in the lower part of the upper cavity enters the lower cavity through the trapping valve, so that adjustment on the flow rate and the pressure of the upper cavity and the lower cavity can be realized conveniently through adjusting the opening degree of each valve. The device has simple structure, convenient control and low cost, and can be mainly used for producing polyester.
Description
Technical field
The present invention relates to the Prepolycondensating reactor device of a kind of production PETG (PET) pre-polymer melt.
Background technology
The conventional polycondensation method of production PETG (PET) includes precondensation and final minification gathers two stages. and wherein precondensation is that the oligomer that Esterification Stage is generated is accomplished esterification fully; Its esterification yield is brought up to more than 99%, meanwhile begun to carry out polycondensation reaction.
Prepolymerization reaction is in the transfer process that just is pressed onto negative pressure; At present great majority adopt two independently reactor accomplish prepolymerization reaction; Some factory has adopted pipeline reactor or tower reactor for accomplishing this transfer process cleverly, but effect all is not special ideal, two independently Prepolycondensating reactor cause that technological process is long, floor space is big, cost has high input and regular maintenance is complicated; There are the problem that technological process is long, one-time investment is bigger equally in pipeline reactor or tower reactor; Simultaneously, the unreacted material that loses during parking is many, and wastage is bigger.
Adopt two independently reactors or gather a device in the reactor and partly adopt the liquid phase material outer circulation; In order to prevent the thermal loss of material in externally circulating; Must be in circulating line outer wrap a large amount of heat-insulation layer or insulation jacket; Improve production cost, be difficult to keep constant temperature of charge simultaneously.
Summary of the invention
For overcoming the defective of prior art, the invention provides a kind of Prepolycondensating reactor device.Adopt this reactor, can effectively accomplish the smooth conversion of malleation in the prepolymerization reaction (or little negative pressure) reaction, improved the esterification yield of melt, help reducing energy consumption and production cost to the negative reaction environment.
The present invention realizes through following technical scheme:
A kind of Prepolycondensating reactor device comprises housing, is provided with dividing plate in the said housing; Said dividing plate is divided into upper cavity and lower chamber with said housing; Said dividing plate middle part is provided with upwardly extending isolation cylindrical shell, and said isolation cylindrical shell top is provided with the guiding valve that is communicated with upper cavity and lower chamber, and the gas on upper cavity top gets into said lower chamber through said guiding valve; Said isolation cylindrical shell bottom or diaphragm body are provided with the valve of holding back that is communicated with upper cavity and lower chamber; The liquid of upper cavity bottom gets into said lower chamber through the said valve of holding back, and said housing is provided with material inlet, is provided with baffle plate in the said upper cavity; Said baffle plate both sides connect the outer wall of said inner walls and said isolation cylindrical shell respectively; And seal this inner walls and isolate the passage between the cylinder body outer wall, said material inlet is positioned at a side of said baffle plate, said guiding valve with hold back the opposite side that valve is positioned at said baffle plate.
When being provided with described isolation cylindrical shell at dividing plate middle part; Can dividing plate be regarded as tabular ringwise diaphragm body and be connected the isolation cylindrical shell two parts on the diaphragm body; The diaphragm body lower space is interconnected with isolation cylindrical shell volume inside and is one; Constitute described lower chamber, and the space that shell, diaphragm body and isolation cylindrical shell surround constitutes described upper cavity.
Can be provided with in the said lower chamber by agitating device.
The deflector that lays respectively at said guiding valve both sides be can be provided with on the said isolation cylindrical shell,, turbulent flow and resistance reduced so that steering current flows smoothly.
Said each deflector all can be curved, and to form crooked MEDIA FLOW passage, said slit both sides are provided with the slit sidewall that cooperates with said valve plug.
Said guiding valve can be the control valve that can regulate flow.
Said control valve can comprise vertical slots and the valve plug moving up and down that is arranged on the said isolating cylinder body sidewall; Said valve plug bottom is the polished rod that can constitute sealing pair with said slit; Top is screw rod; Said screw rod extends to outside the said seal casinghousing, and is provided with the nut with its threaded engagement, and said nut is fixedly connected with said housing.Through the insertion depth of control valve plug in slit, just can control the size that gas passes the sectional area of slit, thus the pressure differential of adjustments of gas flow and guiding valve both sides (upper cavity and lower chamber).
The said valve of holding back can comprise being arranged on and is used for access opening that MEDIA FLOW crosses and the valve plate that cooperates with this access opening on the diaphragm body; Said valve plate can connect the trapped line pressure valve valve rod through the trapped line pressure valve transmission mechanism usually, and the outer end of said trapped line pressure valve valve rod extends to outside the said seal casinghousing.Said access opening can directly be opened on the diaphragm body, also can on diaphragm body, open a hole, and the valve body that the MEDIA FLOW passage is set is installed on this this hole then, and the MEDIA FLOW passage on this valve body promptly constitutes described access opening.
Said trapped line pressure valve transmission mechanism can comprise a bolt and nut pair; Said nut is fixedly mounted on the said dividing plate; Said screw rod connects said valve plate, drives valve plate and moves, and said valve rod is provided with helical tooth; The said nut outside is provided with the helical teeth with said helical tooth engagement, constitutes worm gear pair with said valve rod.Rotary valve rod drives nut and rotates, and then drives the screw rod rotation; The valve plate that is connected screw rod one end is moved, and when valve plate covered fully or seals said access opening, this held back valve closing; When valve plate leaves said access opening fully; This holds back the valve complete opening, and when valve plate blocked the part area of access opening, this was held back valve and not exclusively opens.
Said access opening transverse width surpasses 1/2 of said valve plate body width, to guarantee the even of MEDIA FLOW, reduces the dead angle; The outer end of said trapped line pressure valve valve rod can be connected with manual control equipment.
One side of said upper cavity can be provided with material inlet; The top of said lower chamber can be provided with and extend to the outer exhaust passage of said housing; Said lower chamber bottom can be provided with the prepolymer outlet, and said upper cavity inner bottom part and said lower chamber inner bottom part can be provided with some heaters usually.
Said housing wall can have the import of some thermal medium input channels and the outlet of thermal medium output channel; Some said thermal medium input channels are connected said upper cavity heater and said lower chamber heater respectively with the thermal medium output channel; All said thermal medium input channels link to each other through assembly outside said housing and converge into behind the pipeline or link to each other with the heating agent source separately, and all said thermal medium output channels converge into behind the pipeline or link to each other with the heating agent source separately through assembly is continuous outside said housing.
Said housing can be coated with the chuck with heat insulation function in its outside usually.
Beneficial effect of the present invention has been simplified device structure thus because the upper cavity of malleation (or little negative pressure) and the lower chamber of negative pressure are arranged in the same housing; Be used for guiding valve that gas passes through and be used for the valve of holding back that liquid passes through owing to be provided with, can realize easily through the aperture of regulating each valve thus the adjusting of flow and upper cavity and lower chamber pressure has been made things convenient for technology controlling and process; Because gas and liquid all flow in housing, avoided the outer thermal loss that flows of device, also saved the cost of manufacture and the cost that sets up pipeline of insulation jacket.To be positioned at upper cavity central authorities owing to isolate cylindrical shell, and make upper cavity form an annular space, and baffle plate cut off this annular space; After making the material that gets into upper cavity by the material inlet of baffle plate one side flow to the opposite side of baffle plate along this annular space; Can not continue to flow forward, can only or hold back valve from the guiding valve and flow into lower chamber, after promptly material gets into from material inlet; Need flow through near full annular; Could get into corresponding valve, avoid by material inlet, guarantee that the material upper cavity fully reacts and evaporates to " short circuit " the valve.
Description of drawings
Fig. 1 is the plan structure sketch map of apparatus of the present invention;
Fig. 2 is the A-A rotation generalized section of apparatus of the present invention;
Fig. 3 is the B-B rotation generalized section of apparatus of the present invention.
The specific embodiment
Referring to Fig. 1 to Fig. 3, the invention provides a kind of Prepolycondensating reactor device, this device comprises closure casing 20, and said closure casing is divided into upper cavity 1 and lower chamber 2 by dividing plate 3, and said dividing plate middle part extends upward to and isolates cylindrical shell 4.
The top of said isolation cylindrical shell 4 has guiding valve 7, and said guiding valve is a control valve, and said control valve comprises the vertical slots that is arranged on the isolation cylindrical shell; Fill in the valve plug 6 that slit can move up and down, the slit both sides are provided with the slit sidewall 5 that cooperates with said valve plug, and said valve plug bottom is the polished rod that can constitute sealing pair with said slit; Top is screw rod; Said screw rod extends to outside the said seal casinghousing, and is provided with the nut with its threaded engagement, and said nut is fixedly connected with said housing.
Said isolation cylindrical shell is respectively equipped with deflector in said guiding valve both sides; Said deflector is a curved; To form crooked MEDIA FLOW passage; Make things convenient for media flow the dead angle phenomenon not occur, the gas material that is in the upper cavity of malleation (or little negative pressure) progressively gets into lower chamber by upper cavity through deflector, slit-shaped guiding valve and lower chamber deflector, and gaseous phase materials carries out vapor-liquid separation under the situation that space sudden enlargement, flow velocity reduce; Gas is discharged from the outlet of passing upper cavity, and liquid phase material falls into the polycondensation reaction of proceeding negative pressure state in the lower chamber.
Have on said isolation cylindrical shell bottom or the dividing plate and hold back valve, the said valve of holding back can comprise being arranged on to isolate and is used for opening that liquid material flows through and the valve plate 8 that cooperates with this opening on cylindrical shell or the dividing plate.
Said opening is an elongated shape, and the transverse width of said access opening surpasses 1/2 of said valve plate width, to guarantee that media flow is even, reduces the dead angle.
Said valve plate can connect trapped line pressure valve valve rod 10 through trapped line pressure valve transmission mechanism 9 usually, and the outer end of said trapped line pressure valve valve rod extends to outside the said seal casinghousing, and is connected with control appliance 11, and said control appliance can be for manually also being other control mode.
Said trapped line pressure valve transmission mechanism can comprise a bolt and nut pair; Said nut is fixedly mounted on the said dividing plate; Said screw rod connects said valve plate, drives valve plate and moves, and said valve rod is provided with helical tooth; The said nut outside is provided with the helical teeth with said helical tooth engagement, constitutes worm gear pair with said valve rod.
The sidewall of said upper cavity has material inlet 12.
The bottom of said lower chamber has prepolymer outlet 14; The sidewall of said lower chamber has exhaust passage 13; Said exhaust passage extends to said outside, is used for discharging the waste gas of upper cavity and lower chamber reaction production, and said lower chamber inner bottom part is provided with agitating device; Said agitating device can comprise stirring motor 19, shaft 18 and paddle 17; Because upper cavity relies on material self boiling to stir when reaction, so as long as agitator acts on lower chamber, so agitating device is located at the cavity of resorption bottom.
Be equipped with heater 15 in said upper cavity and the said lower chamber; This heater can adopt one group of existing heat(ing) coil or other heaters; Heat(ing) coil is connected with thermal medium input channel and output channel respectively; Said input channel or output channel extend to outside the housing from said closed shell inside, respectively or be parallel to a total input channel or output channel after, be connected to heating agent source 16.
Said housing be coated with in its outside one have a heat insulation function chuck 21.
Keep sealing state in this device.
The concrete workflow of Prepolycondensating reactor is following among the present invention:
At first will rely on pressure differential to send into upper cavity from the esterification products of esterifier through material inlet; In upper cavity, heat, and owing to design under the condition that reduces pressure gradually of reactor, be fluidized state after making material get into upper cavity by heating tube; Lean on material self boiling to mix; And stir at the bubble generating process, the ethylene glycol in this moment esterification products is gasified, and produces liquid phase material and gaseous phase materials; Wherein the control of liquid phase material through trapped line pressure valve flows into lower chamber, and wherein said trapped line pressure valve is used to control fluid flow and the liquid level in the cavity is poor up and down.And the gasification after gaseous phase materials by means of action of pressure between upper cavity and lower chamber with high speed through the guiding valve slit; Get into lower chamber; Wherein guiding valve is control valve; This control valve can be regulated the size of slit according to demand of practical production, and gas material partly becomes liquid and splashes in the liquid material with the liquid material that gets into lower chamber and continue to be heated by the heating tube of lower chamber inner bottom part, and under the effect of agitating device, stirs the polycondensation back-pressure; The temperature of this lower chamber arrives the time of staying (about 1.5 hours) back material and discharges from the prepolymer outlet of lower chamber between 272-276 ℃; Ethylene glycol steam that upper cavity and lower chamber polycondensation reaction produce in the reaction and steam and other gas together enter exhaust treatment system from the exhaust passage of lower chamber.
Claims (8)
1. a Prepolycondensating reactor device is characterized in that comprising housing, is provided with dividing plate in the said housing; Said dividing plate is divided into upper cavity and lower chamber with said housing, and said dividing plate middle part is upwardly extending isolation cylindrical shell, and said isolation cylindrical shell top is provided with the guiding valve that is communicated with upper cavity and lower chamber; The gas on upper cavity top gets into said lower chamber through said guiding valve, and said isolation cylindrical shell bottom or diaphragm body are provided with the valve of holding back that is communicated with upper cavity and lower chamber, and the liquid of upper cavity bottom gets into said lower chamber through the said valve of holding back; Said housing is provided with material inlet; Be provided with baffle plate in the said upper cavity, said baffle plate both sides connect the outer wall of said inner walls and said isolation cylindrical shell respectively, and seal this inner walls and isolate the passage between the cylinder body outer wall; Said material inlet is positioned at a side of said baffle plate; Said guiding valve with hold back the opposite side that valve is positioned at said baffle plate, said guiding valve is a control valve, said control valve comprises vertical slots and the valve plug moving up and down that is arranged on the said isolating cylinder body sidewall; Said valve plug bottom is the polished rod that can constitute sealing pair with said slit; Top is screw rod, and said screw rod extends to outside the said seal casinghousing, and is provided with the nut with its threaded engagement; Said nut is fixedly connected with said housing; The said valve of holding back comprises being arranged on and is used for access opening that MEDIA FLOW crosses and the valve plate that cooperates with this access opening on the dividing plate, and said valve plate connects the trapped line pressure valve valve rod through the trapped line pressure valve transmission mechanism, and the outer end of said trapped line pressure valve valve rod extends to outside the said seal casinghousing.
2. according to the said Prepolycondensating reactor device of claim 1, it is characterized in that said isolation cylindrical shell is provided with the deflector that lays respectively at said guiding valve both sides, is provided with agitating device in the said lower chamber.
3. according to the said Prepolycondensating reactor device of claim 2, it is characterized in that said each deflector all is curved, said slit both sides are provided with the slit sidewall that cooperates with said valve plug.
4. according to claim 1,2 or 3 said Prepolycondensating reactor devices; It is characterized in that said trapped line pressure valve transmission mechanism comprises a bolt and nut pair, said nut is fixedly mounted on the said dividing plate, and said screw rod connects said valve plate; The drive valve plate moves; Said valve rod is provided with helical tooth, and the said nut outside is provided with the helical teeth with said helical tooth engagement, constitutes worm gear pair with said valve rod.
5. according to the said Prepolycondensating reactor device of claim 4, it is characterized in that said access opening transverse width surpasses 1/2 of said valve plate width; The outer end of said trapped line pressure valve valve rod is connected with control appliance.
6. according to the said Prepolycondensating reactor device of claim 5; The top that it is characterized in that said lower chamber is provided with the exhaust passage that extends to outside the said housing; Said lower chamber bottom is provided with the prepolymer outlet, and said upper cavity inner bottom part and said lower chamber inner bottom part are provided with some heaters.
7. according to the said Prepolycondensating reactor device of claim 6; It is characterized in that said housing wall has the import of some thermal medium input channels and the outlet of thermal medium output channel; Some said thermal medium input channels are connected said upper cavity heater and said lower chamber heater respectively with the thermal medium output channel; All said thermal medium input channels link to each other through assembly outside said housing and link to each other with the heating agent source after converging into a pipeline, and all said thermal medium output channels link to each other with the heating agent source after outside said housing, converging into a pipeline through assembly is continuous.
8. according to the said Prepolycondensating reactor device of claim 7, it is characterized in that said housing is coated with the chuck with heat insulation function in its outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910085295 CN101612544B (en) | 2009-05-27 | 2009-05-27 | Prepolycondensating reactor device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910085295 CN101612544B (en) | 2009-05-27 | 2009-05-27 | Prepolycondensating reactor device |
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| CN101612544A CN101612544A (en) | 2009-12-30 |
| CN101612544B true CN101612544B (en) | 2012-01-25 |
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| CN 200910085295 Active CN101612544B (en) | 2009-05-27 | 2009-05-27 | Prepolycondensating reactor device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| IN2014MN00006A (en) * | 2011-06-10 | 2015-06-12 | Invista Tech Sarl | |
| CN105567553B (en) * | 2014-10-16 | 2018-10-16 | 中粮营养健康研究院有限公司 | The enzyme solution of enzymolysis device and enzymatic hydrolysis system and cellulose containing raw material including the enzymolysis device |
| CN105617958A (en) * | 2014-11-28 | 2016-06-01 | 丹阳恒安化学科技研究所有限公司 | Variable temperature reaction kettle |
| CN108671865B (en) * | 2018-05-30 | 2020-08-14 | 荣成惠德环保科技有限公司 | Double-coil energy-saving efficient reaction kettle adopting jacket for exhausting |
| CN111495276B (en) * | 2019-01-30 | 2022-09-23 | 宁波富理电池材料科技有限公司 | High-temperature high-pressure gas-solid reaction kettle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837786A (en) * | 1996-11-01 | 1998-11-17 | Mitsui Chemicals, Inc. | Process for producing polyester |
| CN1583821A (en) * | 2004-06-02 | 2005-02-23 | 中国纺织工业设计院 | Efficient, simple and continuous process and apparatus for production of polyethylene glycol terephthalate |
| CN2707759Y (en) * | 2004-06-02 | 2005-07-06 | 中国纺织工业设计院 | High efficiency, simplified and combined type pre-polycondensation reactor |
| CN1706793A (en) * | 2005-04-25 | 2005-12-14 | 上海吴泾化工有限公司 | Esterification reactor |
| CN2767447Y (en) * | 2005-02-05 | 2006-03-29 | 中国纺织工业设计院 | Highly efficient simplified apparatus for producing polyethylene terephthalate |
-
2009
- 2009-05-27 CN CN 200910085295 patent/CN101612544B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837786A (en) * | 1996-11-01 | 1998-11-17 | Mitsui Chemicals, Inc. | Process for producing polyester |
| CN1583821A (en) * | 2004-06-02 | 2005-02-23 | 中国纺织工业设计院 | Efficient, simple and continuous process and apparatus for production of polyethylene glycol terephthalate |
| CN2707759Y (en) * | 2004-06-02 | 2005-07-06 | 中国纺织工业设计院 | High efficiency, simplified and combined type pre-polycondensation reactor |
| CN2767447Y (en) * | 2005-02-05 | 2006-03-29 | 中国纺织工业设计院 | Highly efficient simplified apparatus for producing polyethylene terephthalate |
| CN1706793A (en) * | 2005-04-25 | 2005-12-14 | 上海吴泾化工有限公司 | Esterification reactor |
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Owner name: CHINA KUNLUN ENGINEERING CO. Free format text: FORMER OWNER: CHINA TEXTILE INDUSTRY DESIGN INST. Effective date: 20120405 |
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Effective date of registration: 20120405 Address after: 100037 Beijing city Haidian District Zengguang Road No. 21 Patentee after: China Kunlun Contracting & Engineering Corporation Address before: 100037 Beijing city Haidian District Zengguang Road No. 21 Patentee before: China Textile Industry Design Institute |
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Address after: 100037 Beijing city Haidian District Zengguang Road No. 21 Patentee after: China Kunlun Engineering Co., Ltd. Address before: 100037 Beijing city Haidian District Zengguang Road No. 21 Patentee before: China Kunlun Contracting & Engineering Corporation |
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Effective date of registration: 20201218 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CHINA KUNLUN CONTRACTING & ENGINEERING Corp. Address before: 100037 No. 21, shining road, Beijing, Haidian District Patentee before: CHINA KUNLUN CONTRACTING & ENGINEERING Corp. |
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