CN1076216C - Continuous stirring polymerizing reactor tower - Google Patents
Continuous stirring polymerizing reactor tower Download PDFInfo
- Publication number
- CN1076216C CN1076216C CN97118855A CN97118855A CN1076216C CN 1076216 C CN1076216 C CN 1076216C CN 97118855 A CN97118855 A CN 97118855A CN 97118855 A CN97118855 A CN 97118855A CN 1076216 C CN1076216 C CN 1076216C
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- CN
- China
- Prior art keywords
- baffle plate
- interior
- tower
- cold shut
- polymerizing reactor
- 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.)
- Expired - Lifetime
Links
- 230000000379 polymerizing effect Effects 0.000 title claims abstract description 28
- 238000003756 stirring Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 230000002401 inhibitory effect Effects 0.000 abstract 2
- 238000007599 discharging Methods 0.000 description 7
- 238000006116 polymerization reaction Methods 0.000 description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920005669 high impact polystyrene Polymers 0.000 description 2
- 239000004797 high-impact polystyrene Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- Polymerisation Methods In General (AREA)
Abstract
The present invention relates to a continuous stirring polymerizing reactor tower which is divided into a plurality of stages between an upper shell cover and a lower shell cover by internal-cooling isolating baffle plates. A cooling jacket is arranged outside each stage of tower sections, and stirring shafts are assembled sectionally; two sieve trays are arranged on the stirring shaft in each tower section to divide the tower section into three regions, and a stirring paddle is arranged on the stirring shaft of each region. Due to the adoption of the internal-cooling isolating baffle plates with the smaller cross section of a material axial passage and the added sieve trays with an auxiliary stirring function, the interstage backmixing and the axial backmixing of inhibiting materials have the approximate characteristic of plug flow. The present invention is suitable for continuously polymerizing processes with the large heat load of chemical reaction and the high backmixing requirements of inhibiting materials.
Description
The present invention relates to have in fixed container the equipment of gyratory agitation device, is a kind of continuous stirring polymerizing reactor tower.
In the existing at home and abroad styrene continuous polymerization reaction unit technical field, polymerizing reactor mainly contains following several: 4 still continuous polymerization unit (the Thiele R.etal of (TEC-MTC) are pressed in Japanese Toyo Engineering Corporation-Mitsui east, Polymer Reaction Engineering, 1989), because reactor is a continuous stir reactor, so the production efficiency of polyplant is restricted.After improved TEC-MTC polyplant is in series (China Synthetic Rubber Industry, No.3,1994) by three tower reactors, wherein two the ribbon impeller is alternate with one deck tubular heat exchanger forms by one deck for tower reactor.Every layer of two ribbon impeller all are isolated into two sections by the porous plectane.This reactor makes flowing of the interior material of device close to laminar flow, helps the raising of production efficiency.But the pipe that material flow is crossed tubular heat exchanger simultaneously, and it is difficult making the uniform distribution of material flow on the cross section of tower.The polyplant that U.S. Dow chemical company is used to produce impact-resistant polystyrene (HIPS) is composed in series by three tower reactors.Become 100 multistage by interior cold shut from barrier partitions in the tower, isolate between the baffle plates paddle is housed for per two.Interior isolation baffle plate is bent into three sectors by cold pipe and constitutes, and production efficiency is higher.But because the interior cold shut of this tower reactor becomes three sectors from baffle design, the reduction material flow is crossed interior cold shut to be restricted from the channel cross-section of baffle plate, and interior cold shut has intense influence from the size in the material channel cross section of baffle plate to the material back-mixing of inter-stage, so, although this device is still more advanced on prior art, owing to still having bigger inter-stage back-mixing to influence the further raising of further reducing of tower height and efficient.
The objective of the invention is: cold heat transfer in a kind of can the carrying out is provided, can suppresses the inter-stage back-mixing of material and the continuous stirring polymerizing reactor tower of the multistage coupling of axial backmixing again, can solve the problem that exists in the background technology field.
For achieving the above object, the technical solution used in the present invention is:
It comprises motor, shaft, upper cover, low head, and screen tray, interior cold shut are from baffle plate, paddle, cooling jacket.Shaft is that segmentation is assembled, and the length of each section is that the height of each cylindrical column section and interior cold shut are from baffle plate thickness sum.It all is to be lined with the interior cold shut of flange from baffle plate that the two sides is housed between the lower surface of upper cover and first cylindrical column section upper surface, is integral with screw is affixed; The upper surface of low head and last cylindrical column section lower surface are integral with screw is affixed with interior cold shut that the two sides all is lined with flange being housed from baffle plate; N cylindrical column Duan Tongjun is equipped with interior cold shut that the two sides all is lined with flange from baffle plate, is integral with screw is affixed; Interior cold shut is n+1 from the number of baffle plate.On the shaft in each cylindrical column section two screen traies are housed, the tower section is separated into three districts, upper, middle and lower, paddle is housed respectively on the shaft in every district.
Interior cold shut in baffle plate comprises cold shut from the baffle plate annular flange, the interior clod wash pipe that cold shut is outwards distributed by the same center of circle by many same diameter in baffle plate annular flange inner ring in being contained in, cold straight tube is divided into three districts with interior clod wash pipe in three groups, cold straight tube is communicated with interior clod wash pipe respectively in three groups, cold straight tubes are communicated with the cross through hole of interior cold shut on the baffle plate annular flange respectively in three groups, between the interior clod wash pipe, between the interior cold straight tube, interior clod wash pipe and interior cold shut all keep the gap between baffle plate annular flange and shaft.The size in each gap can be the same or different, and the material channel sectional area of being made up of whole gaps of interior cold shut on baffle plate is about 12～20% with the ratio (also claiming percent opening) of tower body cross-sectional area.The power of whole agitating device is provided by motor, and the reaction temperature in the device can be controlled by the heating agent segmentation from baffle plate by cooling jacket and interior cold shut.
The present invention as required it single tower or multitower are in series, during series connection, the material of first polymerizing reactor tower bottom discharge mouth, through being pumped to its top feed mouth of second polymerizing reactor tower, be connected into multitower successively, the hop count of each tower also can change as required, and the platform number of tower is general≤and 5.
The present invention compares with background technology, the beneficial effect that has is: adopt the less interior cold shut in material axial passage cross section from baffle plate owing to isolate baffle plate, except that providing strong interior cold heat transfer means, suppressed the inter-stage back-mixing of material in the device to greatest extent to satisfy the high requirement of reaction heat load; Between baffle plate, promptly except that paddle, set up screen tray in each level at per two interior cold baffles, not only can stir but also can suppress the axial backmixing of material; The distribution of the time of staying of cold heat transfer member and material had the characteristic near laminar flow in this device possessed.The present invention is applicable to that the chemical reaction thermic load is big, suppresses material back-mixing demanding continuous polymerization process, especially benzene 0 ethene continuous bulk polymerization process, and when the multitower serial operation, total tower height reduces about 25% than total tower height of prior art.
Description of drawings:
Fig. 1, structure principle chart of the present invention;
Fig. 2, interior cold shut are from the structural representation of baffle plate;
The structural representation of Fig. 3, screen tray;
The structural representation of Fig. 4, paddle.
Below in conjunction with accompanying drawing, provide details of the present invention by description to embodiment.
As shown in Figure 1 and Figure 2, reaction mass is with the F mouth charging of certain flow from the polymerizing reactor tower top, be contained in outer cooling jacket 9 of circular tower section 7 and interior cold shut in baffle plate 6 with conduction oil as heating agent, heating agent is respectively from cross through hole a, b, c the interior clod wash pipe 14 through interior cold straight tube 15 (totally three group 6 piece) respectively enter each district in of interior cold shut from baffle plate annular flange 16, again through each the district in interior cold straight tube 15, from of cross through hole a ', b ', the c ' outflow of interior cold shut from baffle plate annular flange 16.Motor 1 drives the anchor formula oar 4 that is contained on the shaft 2 and rotates, logistics enters the back and mixes the beginning polymerisation, material is by interior clod wash pipe 14, the interior cold straight tube 15 of interior cold shut in baffle plate 6 then, enter next stage in the gap that interior clod wash pipe 14 and interior cold shut constitute between baffle plate flange 16 and shaft 2, again through the paddle 8 of inter-stage, screen tray 10, paddle 8, screen tray 10, paddle 8, continue after polymerisation under the stirring, to enter next stage again, repeat behind the said process step by step down to the P mouth discharging at the bottom of the tower of material after the anchor formula oar polymerization of bottom.Or use the F mouth charging that is pumped to second top of tower that is in series with this tower after the discharging, repeat above-mentioned polymerization process.Cylindrical column section 7 is n 〉=3, is eight cylindrical column sections in the accompanying drawing 1.Screen tray 10 can be not open the hole or have small through hole as shown in Figure 3.Paddle 8 is illustrated in figure 4 as the oblique oar of three leaves.Two interior cold shuts of tower section flange 12 usefulness screws clamp are two sealing plates from baffle plate 6,11 among Fig. 1, and 3 is upper cover, and 5 is the axle envelope, and 13 is low head.
Embodiment 1: the whole polymerizing reactor system that is used to prepare HIPS is composed in series by three continuous polymerization polymerizing reactor towers.The net volume of every tower continuous polymerization unit is 50 liters.1st, the speed of agitator of 2 two polymerizing reactor towers is 50～100 rev/mins, and the speed of agitator of the 3rd polymerizing reactor tower is 50～70 rev/mins.Cooling jacket and interior cold shut in baffle plate with conduction oil as heating agent.Logistics from about 60～64% styrene of dissolving tank, 18～25% polybutadiene rubbers and an amount of mineral oil and ethylbenzene diluent are formed enters the 1st polymerizing reactor tower its top feed mouth with flow 500ml/min.Reaction temperature in this device is 100～120 ℃ from top to bottom, divides upper, middle and lower three sections temperature controls, and reaction pressure is 250～280KPa.Reaction mass is from the discharging of the 1st polymerizing reactor tower bottom discharge mouth, and is pumped to the 2nd polymerizing reactor tower its top feed mouth.Reaction temperature in this device is 120～150 ℃ from top to bottom, divides upper, middle and lower three sections temperature controls, and reaction pressure is 260～300KPa.From this bottom of device discharge hole for discharge, and it is pumped to the 3rd polymerizing reactor tower its top feed mouth.Reaction temperature in this device is 150～190 ℃ from top to bottom, and reaction pressure is 350～380KPa.In the outlet logistics of this bottom of device discharging opening, cinnamic conversion ratio is 86～90%, then it is pumped to the devolatilization operation and carries out the devolatilization processing.
Embodiment 2 is whole to be used to prepare the polymerizing reactor system of general purpose polystyrene (GPPS) with embodiment 1.The styrene product pump that is added with an amount of ethylbenzene diluent is delivered to the 1st polymerizing reactor tower its top feed mouth.Reaction temperature in this device is 110～120 ℃ from top to bottom, divides upper, middle and lower three sections temperature controls.Reaction pressure is 240～270KPa.To be pumped to the 2nd polymerizing reactor tower its top feed mouth with the outlet logistics of this bottom of device discharging opening.Temperature in this device is 120～140 ℃ from top to bottom, divides upper, middle and lower three sections temperature controls.Reaction pressure is 260～330KPa.The outlet material of this bottom of device discharging opening is pumped to the 3rd polymerizing reactor tower its top feed mouth.Reaction temperature in this device is 140～185 ℃ from top to bottom, divides upper, middle and lower three sections temperature controls, and reaction pressure is 340～370KPa.In the outlet logistics of this bottom of device discharging opening, cinnamic conversion ratio is 85～88%, and should export logistics and be pumped to the devolatilization operation and carry out devolatilization and handle.
Claims (4)
1. continuous stirring polymerizing reactor tower, it comprises motor, shaft, upper cover, low head, screen tray, interior cold shut from baffle plate, paddle, cooling jacket, it is characterized in that:
1) shaft [2] is for segmentation is assembled, and the length of each section is that the height of each cylindrical column section [7] and interior cold shut are from baffle plate [6] thickness sum;
2) interior cold shut that the two sides all is lined with flange [12] is housed from baffle plate [6] between the lower surface of upper cover [5] and first cylindrical column section [7] upper surface, is integral with screw is affixed; Interior cold shut that the two sides all is lined with flange [12] is housed from baffle plate [6] between the upper surface of low head [13] and last cylindrical column section [7] lower surface, is integral with screw is affixed; Interior cold shut that the two sides all is lined with flange [12] all is housed from baffle plate [6] between n cylindrical column section [7], is integral with screw is affixed; Interior cold shut is n+1 from the number of baffle plate [6];
3) on the shaft in each cylindrical column section [7] two screen traies [10] are housed, tower section [7] is separated into three districts, upper, middle and lower, paddle [8] is housed respectively on the shaft in every district.
2. continuous stirring polymerizing reactor tower according to claim 1, it is characterized in that: interior cold shut in baffle plate [6] comprises cold shut from baffle plate annular flange [16], in being contained in cold shut in baffle plate annular flange [16] inner ring by many same diameter by the same center of circle outwards in [14] three groups of the interior clod wash pipes of distribution cold straight tube [15] interior clod wash pipe [14] is divided into three districts, cold straight tube [15] is communicated with interior clod wash pipe [14] respectively in three groups, cold straight tube [15] is communicated with the cross through hole of interior cold shut on baffle plate annular flange [16] respectively in three groups, between the interior clod wash pipe [14], between the interior cold straight tube [15], interior clod wash pipe [14] and interior cold shut all keep the gap between baffle plate annular flange [16] and shaft [2].
3. continuous stirring polymerizing reactor tower according to claim 1 is characterized in that said n cylindrical column section [7] is n 〉=3.
4. continuous stirring polymerizing reactor tower according to claim 1, it is characterized in that: it is that single tower or multitower are in series, during series connection, the material of first polymerizing reactor tower bottom discharge mouth, through being pumped to its top feed mouth of second polymerizing reactor tower, be connected into multitower successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97118855A CN1076216C (en) | 1997-10-28 | 1997-10-28 | Continuous stirring polymerizing reactor tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97118855A CN1076216C (en) | 1997-10-28 | 1997-10-28 | Continuous stirring polymerizing reactor tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1186716A CN1186716A (en) | 1998-07-08 |
| CN1076216C true CN1076216C (en) | 2001-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97118855A Expired - Lifetime CN1076216C (en) | 1997-10-28 | 1997-10-28 | Continuous stirring polymerizing reactor tower |
Country Status (1)
| Country | Link |
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| CN (1) | CN1076216C (en) |
Cited By (2)
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|---|---|---|---|---|
| CN100363095C (en) * | 2005-12-28 | 2008-01-23 | 北京英诺威逊聚合技术有限公司 | High-efficient continuous slide flowing agitator |
| CN100404113C (en) * | 2003-05-21 | 2008-07-23 | 爱博胜公司 | Device for separating a fluid into at least two parts using a multi-membrane filter and use thereof |
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| CN115445483A (en) * | 2022-10-24 | 2022-12-09 | 上海骁齐新材料科技有限公司 | Material mixer |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035001A (en) * | 1983-08-05 | 1985-02-22 | Japan Synthetic Rubber Co Ltd | Polymerization reactor |
| CN88101706A (en) * | 1987-03-27 | 1988-10-05 | 新日铁化学株式会社 | Polymerization device |
-
1997
- 1997-10-28 CN CN97118855A patent/CN1076216C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035001A (en) * | 1983-08-05 | 1985-02-22 | Japan Synthetic Rubber Co Ltd | Polymerization reactor |
| CN88101706A (en) * | 1987-03-27 | 1988-10-05 | 新日铁化学株式会社 | Polymerization device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404113C (en) * | 2003-05-21 | 2008-07-23 | 爱博胜公司 | Device for separating a fluid into at least two parts using a multi-membrane filter and use thereof |
| CN100363095C (en) * | 2005-12-28 | 2008-01-23 | 北京英诺威逊聚合技术有限公司 | High-efficient continuous slide flowing agitator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1186716A (en) | 1998-07-08 |
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