CN202506160U - Slurry stripping tower with overflow weirs - Google Patents
Slurry stripping tower with overflow weirs Download PDFInfo
- Publication number
- CN202506160U CN202506160U CN201220070805XU CN201220070805U CN202506160U CN 202506160 U CN202506160 U CN 202506160U CN 201220070805X U CN201220070805X U CN 201220070805XU CN 201220070805 U CN201220070805 U CN 201220070805U CN 202506160 U CN202506160 U CN 202506160U
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- slurry
- column plate
- tower body
- weir
- tower
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
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Abstract
The utility model discloses a slurry stripping tower with overflow weirs. The slurry stripping tower comprises a tower body and the overflow weirs, wherein a chloroethylene gas outlet, a slurry inlet, a steam inlet, a slurry outlet and an emptying opening are formed in the tower body sequentially from top to bottom; tower plates are arranged in the tower body; top surfaces of all the tower plates are provided with the overflow weirs; the overflow weirs are a plurality of vertical plates which are fixed on the top surfaces of the tower plates; the vertical plates are provided with openings; the openings of two adjacent vertical plates are mutually staggered; liquid flowing channels are formed by the clearances and the openings of the vertical plates on the top surfaces of the tower plates and are winding and communicated; and a plurality of tower plates in the same shape are distributed in the tower body along the vertical direction in a laminated mode at intervals to form a tower plate group. By the slurry stripping tower, a chloroethylene monomer can be removed from polyvinyl chloride (PVC) slurry; and the slurry stripping tower is energy-saving, environment-friendly and high in heat transfer efficiency and mass transfer efficiency and has a good steam stripping effect.
Description
Technical field
The utility model relates to a kind of chemical industry equipment that from the PVC slurry, removes vinyl chloride, is specifically related to a kind of slurry stripper that from the PVC slurry, removes the carry potential overflow weir of vinyl chloride.
Background technology
The existing the most frequently used production method of chemical industry base stock PVC is a water phase suspension; Through adding deionized water and VCM, add again and attach auxiliary agent and the initator that helps, in polymeric kettle; Reaction generates polyvinyl chloride under specific temperature and pressure; The polyvinyl chloride that generates is the aqueous-phase suspending shape, can contain VCM in the space of PVC particle, might still be contained in the PVC particle by VCM after the PVC drying; Because of VCM has very big toxicity, can influence the use of PVC in some fields.
The slurry stripper is one of equipment crucial in the polyvinyl chloride resin production process.Along with continuous advancement in technology; The production-scale continuous expansion of PVC, save production cost, reduce labour intensity, the consciousness that reduces energy consumption strengthens; And it is few more good more to show VCM residual in the market demand polyvinyl chloride resin, adopts new and effective PVC slurry stripper process units to become development trend in recent years.
Common PVC slurry stripping is still formula stripping and the tower stripping of no downflow weir, and still formula stripping is that a still slurry is let out to flash tank, feeds steam from bottom land; Reclaim vinyl chloride from the groove top; This is operating as intermittently operated, and it is many that the PVC after the processing not only contains residual VCM, and steam consumption is big; It is many to sneak into impurity, is prone to stop up postorder equipment.The tower stripping of no downflow weir is to adopt steam and PVC slurry continuous flow upstream transmission of heat by contact, mass transfer on column plate; Between stripper top and tower body, be provided with the slurry distributor; Be provided with no downflow weir column plate in the stripper; The column plate amount is at 30～40, and cat head is provided with spray header, is provided with steam inlet at the bottom of the tower.This technology Stripping effect is better, can remove and reclaim vinyl chloride residual in the PVC slurry in a large number, but column plate quantity is many, and device height is high, is prone to the knot particle on the column plate, and wants frequent opening to clean and change column plate, troublesome poeration, and maintenance of equipment work amount is big.
The utility model content
The purpose of the utility model provides the slurry stripper on carry potential overflow weir, and it is the carry potential overflow weir slurry stripper that from the PVC slurry, removes the energy-conserving and environment-protective of VCM.
The purpose of the utility model is achieved in that
The slurry stripper on a kind of carry potential overflow weir includes tower body, and tower body is a closed container, is disposed with from top to bottom on the tower body: vinyl chloride gas vent, slurry import, steam inlet, slurry outlet and drain, be provided with column plate in the tower body,
It also includes downflow weir, and the column plate end face all is provided with downflow weir; Said downflow weir is many risers that are fixed on the column plate end face, and riser is provided with opening, and the opening of adjacent riser staggers each other, between the riser of column plate end face, reaches opening and constitutes liquid flow path, and passage is shape tortuous and that communicate; By some blocks of identical shaped column plates, in tower body, vertically divide the multilayer compartment of terrain to arrange and form the column plate group;
During work, the PVC slurry gets into from the slurry import on tower body top, and simultaneously, steam gets into from the steam inlet of tower body bottom; PVC slurry each layer column plate upper edge downflow weir through the column plate group in tower body flows, and conducts heat with from bottom to top steam, mass transfer, and the PVC slurry gets into one deck column plate down from down-flow plate; Slurry outlet and the drain of PVC at the bottom of the stripper discharged, and steam and vinyl chloride gas are from the vinyl chloride gas vent discharge at tower body top.
Evenly be provided with several sieve apertures on said every block of column plate, said sieve aperture is arranged by regular equilateral triangle shape and is constituted.Evenly be provided with several sieve apertures on said every block of column plate, the sieve aperture on the said column plate is the sieve aperture of concentric reducing, and the sieve diameter at the column plate back side is greater than sieve diameter N times of the column plate front.Described every layer of column plate is provided with down-flow plate, and down-flow plate is located between edge and the tower body of column plate and forms passage, and neighbouring down-flow plate staggers each other.Described tower body profile is a cylinder, and said column plate group is formed by being arranged on 7 in the tower body to 8 blocks of circular column plates.During work, the pressure in the slurry stripper on said carry potential overflow weir is micro-vacuum state.Top in the slurry stripper on described carry potential overflow weir is provided with the top spray pipe.The below of described every layer of column plate is provided with shower.Described shower is welded by house steward and arm, on house steward and arm, is distributed with the hole of varying number.
The utility model has following advantage and good effect:
1. every layer of column plate is provided with downflow weir, and the PVC slurry can be along downflow weir well-regulated flow on each layer column plate, fully conducts heat with the steam that sieve aperture rises from the column plate from bottom to top, mass transfer, and efficient is higher.
2. evenly be provided with several sieve apertures on every block of column plate, well-regulated flowing on each layer of PVC slurry column plate is difficult for from aperture, revealing; And steam passes macropore earlier; Pass aperture again, the speed of steam can be accelerated, and slurry is more abundant with contacting of steam; Bubbling is more even onboard, the steam stripped better effects if.
3. the below of every layer of column plate is provided with shower, can wash the PVC particle of carrying secretly in the vinyl chloride gas incessantly, economizes in raw materials; Prevent the obstruction of equipment, have simple to operately that maintenance of equipment work amount is little; The number of times that cleans and change column plate is few, the advantage that the operation cycle is long.
4. mode of operation is a micro-negative pressure operation, and VCM more is prone to gasification, separates, and the energy consumption of steam is lower.
Description of drawings
Fig. 1 is this practical structural representation.
Fig. 2 is the profile of sieve aperture.
Fig. 3 is the downflow weir structural representation.
Fig. 4 is the down-flow plate structural representation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
The slurry stripper on a kind of carry potential overflow weir includes tower body 3, and tower body is a closed container, is disposed with from top to bottom on the tower body: vinyl chloride gas vent 10, slurry import 11, steam inlet 4, slurry outlet 13 and drain 2, be provided with column plate in the tower body,
It also includes downflow weir 7, and the column plate end face all is provided with downflow weir; Said downflow weir is many risers that are fixed on the column plate end face, and riser is provided with opening, and the opening of adjacent riser staggers each other, between the riser of column plate end face, reaches opening and constitutes liquid flow path, and passage is shape tortuous and that communicate; By some blocks of identical shaped column plates, in tower body, vertically divide the multilayer compartment of terrain to arrange and form column plate group 6;
During work, the PVC slurry gets into from the slurry import 11 on tower body 3 tops, and simultaneously, steam gets into from the steam inlet 4 of tower body bottom; PVC slurry each layer column plate upper edge downflow weir through column plate group 67 in tower body flows, and conducts heat with from bottom to top steam, mass transfer, and the PVC slurry gets into one deck column plate down from down-flow plate 8; The slurry outlet 13 of PVC at the bottom of the stripper discharged with drain 2, and steam and vinyl chloride gas are from vinyl chloride gas vent 10 discharges at tower body top.
Evenly be provided with several sieve apertures 14 on said every block of column plate, said sieve aperture is arranged by regular equilateral triangle shape and is constituted.Evenly be provided with several sieve apertures 14 on said every block of column plate, the sieve aperture on the said column plate is the sieve aperture of concentric reducing, and the sieve diameter at the column plate back side is greater than sieve diameter N times of the column plate front.Described every layer of column plate is provided with down-flow plate 8, and down-flow plate is located between edge and the tower body of column plate and forms passage, and neighbouring down-flow plate staggers each other.Described tower body 3 profiles are cylinder, and said column plate group is formed by being arranged on 7 in the tower body to 8 blocks of circular column plates.During work, the pressure in the slurry stripper on said carry potential overflow weir is micro-vacuum state.Top in the slurry stripper on described carry potential overflow weir is provided with top spray pipe 9.The below of described every layer of column plate is provided with shower 5.Described shower is welded by house steward and arm, on house steward and arm, is distributed with the hole of varying number.
Among the figure, skirt 1, drain 2, tower body 3, steam inlet 4, shower 5, column plate group 6, downflow weir 7, down-flow plate 8, top spray pipe 9, vinyl chloride gas vent 10, slurry import 11, access hole 12, slurry outlet 13, sieve aperture 14.
As shown in Figure 1, the slurry stripper on a kind of carry potential overflow weir is disposed with from top to bottom: vinyl chloride gas vent 10, top spray pipe 9, slurry import 11, column plate group 6, downflow weir 7, shower 5, steam inlet 4, slurry outlet 13 and drain 2.
As shown in Figure 2, evenly be provided with several sieve apertures on the described column plate, sieve aperture is concentric reducing circular hole, and the column plate front is the very little circular hole of diameter, and the column plate back side is the bigger circular hole of diameter.
As shown in Figure 3, described every layer of column plate is provided with downflow weir.
As shown in Figure 4, described every layer of column plate is provided with down-flow plate.
During work, the PVC slurry carries out stripping from the slurry import 11 entering strippers on stripper tower body 3 tops, and simultaneously, steam gets into strippers inside from the steam inlet 4 of stripper bottom.PVC slurry each layer column plate upper edge downflow weir 7 through column plate group 6 in tower body flows; Fully conduct heat with the steam that sieve aperture 14 rises from the column plate from bottom to top, mass transfer; PVC slurry thereby on each layer column plate, reach fluidized state gets into one deck column plates down through downflow weir 7 from down-flow plate 8 then.Following one deck column plate removes the vinyl chloride in the PVC slurry in the same way; The PVC slurry is removed from stripper orlop column plate; Slurry outlet 13 at the bottom of stripper is discharged with drain 2, and steam and vinyl chloride gas are discharged from the vinyl chloride gas vent 10 at tower body top.In the process that the vinyl chloride gas that removes from the PVC slurry rises in stripper with steam, the shower 5 that the below of every layer of column plate is provided with can wash the PVC particle of carrying secretly in the vinyl chloride gas incessantly; Economize in raw materials; Prevent the obstruction of equipment, simple to operate, maintenance of equipment work amount is little; The number of times that cleans and change column plate is few, and the operation cycle is long.
Claims (9)
1. the slurry stripper on a carry potential overflow weir; Include tower body (3); Tower body is a closed container; Be disposed with from top to bottom on the tower body: vinyl chloride gas vent (10), slurry import (11), steam inlet (4), slurry outlet (13) and drain (2), be provided with column plate in the tower body, it is characterized in that:
It also includes downflow weir (7), and the column plate end face all is provided with downflow weir; Said downflow weir is many risers that are fixed on the column plate end face, and riser is provided with opening, and the opening of adjacent riser staggers each other, between the riser of column plate end face, reaches opening and constitutes liquid flow path, and passage is shape tortuous and that communicate; By some blocks of identical shaped column plates, in tower body, vertically divide the multilayer compartment of terrain to arrange and form column plate group (6);
During work, the PVC slurry gets into from the slurry import (11) on tower body (3) top, and simultaneously, steam gets into from the steam inlet (4) of tower body bottom; PVC slurry each layer column plate upper edge downflow weir (7) through column plate group (6) in tower body flows, and conducts heat with from bottom to top steam, mass transfer, and the PVC slurry gets into one deck column plate down from down-flow plate (8); Slurry outlet (13) and the drain (2) of PVC at the bottom of the stripper discharged, and steam and vinyl chloride gas are from vinyl chloride gas vent (10) discharge at tower body top.
2. the slurry stripper on carry potential overflow according to claim 1 weir is characterized in that: evenly be provided with several sieve apertures (14) on said every block of column plate, said sieve aperture is arranged by regular equilateral triangle shape and is constituted.
3. the slurry stripper on carry potential overflow according to claim 1 weir; It is characterized in that: evenly be provided with several sieve apertures (14) on said every block of column plate; Sieve aperture on the said column plate is the sieve aperture of concentric reducing, and the sieve diameter at the column plate back side is greater than sieve diameter N times of the column plate front.
4. the slurry stripper on carry potential overflow according to claim 1 weir is characterized in that: described every layer of column plate is provided with down-flow plate (8), and down-flow plate is located between edge and the tower body of column plate and forms passage, and neighbouring down-flow plate staggers each other.
5. the slurry stripper on carry potential overflow according to claim 1 weir is characterized in that: described tower body (3) profile is a cylinder, and said column plate group is formed by being arranged on 7 in the tower body to 8 blocks of circular column plates.
6. the slurry stripper on carry potential overflow according to claim 1 weir is characterized in that: during work, the pressure in the slurry stripper on said carry potential overflow weir is micro-vacuum state.
7. the slurry stripper on carry potential overflow according to claim 1 weir is characterized in that: the top in the slurry stripper on described carry potential overflow weir is provided with top spray pipe (9).
8. the slurry stripper on carry potential overflow according to claim 1 weir is characterized in that: the below of described every layer of column plate is provided with shower (5).
9. according to the slurry stripper on claim 7 or 8 described carry potential overflow weirs, it is characterized in that: described shower is welded by house steward and arm, on house steward and arm, is distributed with the hole of varying number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220070805XU CN202506160U (en) | 2012-02-29 | 2012-02-29 | Slurry stripping tower with overflow weirs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220070805XU CN202506160U (en) | 2012-02-29 | 2012-02-29 | Slurry stripping tower with overflow weirs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202506160U true CN202506160U (en) | 2012-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220070805XU Expired - Fee Related CN202506160U (en) | 2012-02-29 | 2012-02-29 | Slurry stripping tower with overflow weirs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202506160U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331030A (en) * | 2013-07-23 | 2013-10-02 | 新疆中泰化学股份有限公司 | Stripping tower device with double overflow weir plates |
| CN112169363A (en) * | 2020-09-29 | 2021-01-05 | 中轻化工绍兴有限公司 | High-efficiency continuous vacuum stripping dioxane removing system |
| CN112279226A (en) * | 2020-12-04 | 2021-01-29 | 河南神马尼龙化工有限责任公司 | Device and method for improving quality of dilute nitric acid product |
| CN115253354A (en) * | 2022-07-25 | 2022-11-01 | 山东凯斯达机械制造有限公司 | Sieve plate tower plate unit component, stripping tower type device and grain and oil deep processing method |
-
2012
- 2012-02-29 CN CN201220070805XU patent/CN202506160U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331030A (en) * | 2013-07-23 | 2013-10-02 | 新疆中泰化学股份有限公司 | Stripping tower device with double overflow weir plates |
| CN112169363A (en) * | 2020-09-29 | 2021-01-05 | 中轻化工绍兴有限公司 | High-efficiency continuous vacuum stripping dioxane removing system |
| CN112279226A (en) * | 2020-12-04 | 2021-01-29 | 河南神马尼龙化工有限责任公司 | Device and method for improving quality of dilute nitric acid product |
| CN115253354A (en) * | 2022-07-25 | 2022-11-01 | 山东凯斯达机械制造有限公司 | Sieve plate tower plate unit component, stripping tower type device and grain and oil deep processing method |
| CN115253354B (en) * | 2022-07-25 | 2023-08-18 | 山东凯斯达机械制造有限公司 | Screen plate column plate unit assembly, stripping tower device and grain and oil deep processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20190228 |