CN206756235U - The vinyl chloride metering device of substance law PVC polyplants - Google Patents
The vinyl chloride metering device of substance law PVC polyplants Download PDFInfo
- Publication number
- CN206756235U CN206756235U CN201720483594.5U CN201720483594U CN206756235U CN 206756235 U CN206756235 U CN 206756235U CN 201720483594 U CN201720483594 U CN 201720483594U CN 206756235 U CN206756235 U CN 206756235U
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- CN
- China
- Prior art keywords
- metering
- mass flowmenter
- outlet
- polyplants
- vinyl chloride
- 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.)
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- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000000126 substance Substances 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000376 reactant Substances 0.000 claims description 3
- 239000000178 monomer Substances 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000004886 process control Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012662 bulk polymerization Methods 0.000 abstract description 2
- 238000005303 weighing Methods 0.000 description 10
- 239000012071 phase Substances 0.000 description 8
- 238000011084 recovery Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The liquid monomer of polyplant and the gaseous monomer of discharge polyplant are entered to improve the vinyl chloride metering device of the substance law PVC polyplants of material metering precision by mass flowmenter metering the utility model discloses a kind of, the metering device is included in the first mass flowmenter suitable for Metering of inlet valve front end setting, in first outlet valve, the second mass flowmenter for being applied to gas phase metering that the front end of second outlet valve is set respectively, 3rd mass flowmenter, metering display is connected with each mass flowmenter signal respectively, second mass flowmenter, the front end of 3rd mass flowmenter is respectively configured with pressure difference alarm filter.Precision of the polyplant to material metering can be improved using the metering device, the accuracy being formulated in bulk polymerization is realized, improves the precision of process control, so as to improve the quality of production product.
Description
Technical field
It the utility model is related to the device for being used for vinyl chloride metering on a kind of substance law PVC polyplants.
Background technology
At present, the metering method that the metering of the VCM of substance law PVC polyplants is weighed using polymeric kettle, it is counted
Amount principle and device composition are as shown in figure 1, the polymeric kettle 1 as the PVC polyplants is provided with material inlet 10 and reaction
Outlet, reaction outlet include the first outlet 11 being connected with recovery condenser 2, the second outlet being connected with recovery degasser 3
12 and as reactant discharging opening the 3rd export 13, material inlet 10 is equipped with inlet valve 20, first outlet 11, second outlet
12 and the 3rd outlet 13 be equipped with first outlet valve 21, the outlet valve 23 of second outlet valve 22 and the 3rd respectively, match somebody with somebody outside polymeric kettle 1
The vinyl chloride metering device formed equipped with the measuring instrument 5 connected by three polymeric kettle weighing sensors 4 with signal therewith.Poly-
Before conjunction kettle feeds intake, clearing of first being weighed to polymeric kettle, it is then turned on polyethylene inlet valve i.e. inlet valve and feeds, start to measure, simultaneously
Open polymeric kettle gaseous monomer and remove the recovery control valve i.e. second outlet valve 22 that deaerates, polymeric kettle discharge gas phase VCM, meter
Amount device real time measure goes out the weight of material in polymeric kettle, and polyethylene inlet valve is closed when reaching addition setting value and has been fed
Weight is initially added into the metering of, weighing instrument 5, and material carries out polymerisation in polymeric kettle, according to control journey in course of reaction
The instruction unpack second outlet valve 22 of sequence and the 3rd outlet valve 23, the polymeric kettle that the real time measure of weighing instrument 5 goes out in course of reaction
The real-time weight of material, it is initially added weight and the real-time weight of material and controls polymerisation as important parameter.
Because polymeric kettle bottom connects a large amount of process pipes with top, temperature and pressure also exists polymeric kettle during the course of the reaction
Change, can cause the stress of polymeric kettle connecting pipe to change, and influence the accuracy of weighing instrument metering, material in polymeric kettle
Weight be polymerisation process control important parameter, monomer conversion can be used in the auxiliary formula and polymerization process of polymerization
Poidometer value, the accuracy of metering can influence the precision of control, so as to influence to produce the quality of product.
Utility model content
To overcome interference of the reaction process to metering accuracy in this existing metering method of weighing polymeric kettle, this practicality is newly
Type technical problem to be solved is to provide a kind of by liquid monomer of the mass flowmenter metering into polyplant and discharge
The gaseous monomer of polyplant improves the vinyl chloride metering device of the substance law PVC polyplants of material metering precision.
Technical scheme is used by the utility model solves its technical problem：The vinyl chloride of substance law PVC polyplants
Metering device, the PVC polyplants are provided with material inlet and reaction exports, and reaction outlet includes being connected with recovery condenser
First outlet, exported with the second outlet that be connected of recovery degasser and as the 3rd of reactant discharging opening, material inlet
Inlet valve is equipped with, first outlet, second outlet and the 3rd outlet are equipped with first outlet valve, second outlet valve and the 3rd respectively
Outlet valve, the first mass flowmenter suitable for Metering is provided with inlet valve front end, in first outlet valve, second outlet
The front end of valve is respectively arranged with the second mass flowmenter suitable for gas phase metering, the 3rd mass flowmenter, metering display point
It is not connected with each mass flowmenter signal.Prior art is directly real-time monitoring polymeric kettle weighing sensor weight, and poidometer
For amount mode because polymeric kettle is connected compared with multi-pipeline, the pipeline of connection can produce the measuring accuracy of stress influence weighing sensor, this reality
Weighting manner is not used with new, is changed using the high mass flowmenter of measurement accuracy, overcoming weighing sensor to exist influences to measure
Disturbing factor, improve material metering precision；Also, the gas phase vinyl chloride of the liquid phase vinyl chloride and discharge to charging carries out real-time
Metering, be initial incremental amount in the metering difference that feeding stage passes through liquid phase vinyl chloride and gas phase vinyl chloride, in stage of reaction reality
When measure the discharge rate of 2 gas phase vinyl chloride, initial incremental amount subtracts gas phase vinyl chloride discharge rate as thing in polymerization reaction kettle
Expect real-time weight.
Second mass flowmenter, the front end of the 3rd mass flowmenter are respectively configured with pressure difference alarm filter.
The front-end configuration of first mass flowmenter has pressure difference alarm filter.
The beneficial effects of the utility model are：Precision of the polyplant to material metering is improved, realizes that polymerisation in bulk is anti-
The accuracy of formula, the precision of raising process control in answering, so as to improve the quality of production product.
Brief description of the drawings
Fig. 1 is the measuring principle and device composition schematic diagram of existing polyplant.
Fig. 2 is the measuring principle and device composition of the vinyl chloride metering device of the utility model substance law PVC polyplants
Schematic diagram.
In figure mark for：Polymeric kettle 1, condenser 2 is reclaimed, reclaim degasser 3, polymeric kettle weighing sensor 4, gauge
Table 5, metering display 6, material inlet 10, first outlet 11, the outlet of second outlet the 12, the 3rd 13, inlet valve 20, first outlet
Valve 21, second outlet valve 22, the 3rd outlet valve 23, the first mass flowmenter 30, the second mass flowmenter 31, the 3rd mass flow
Meter 32, pressure difference alarm filter 40, pressure difference alarm filter 41, pressure difference alarm filter 42.
Embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings.
As shown in Fig. 2 the vinyl chloride metering device of the utility model substance law PVC polyplants, PVC polyplants are poly-
Kettle 1 is closed, its front end of inlet valve 20 is provided with the first mass flowmenter 30 suitable for Metering, in its first outlet valve 21
Front end be provided with the second mass flowmenter 31 suitable for gas phase metering, be provided with the front end of its second outlet valve 22 it is applicable
In gas phase metering the 3rd mass flowmenter 32, a metering display respectively with the first mass flowmenter 30, the second mass flow
Meter 31, the connection of the signal of the 3rd mass flowmenter 32：Numerical value is measured with the first mass flowmenter 306 and subtracts the second mass flowmenter
31st, the 3rd mass flowmenter 32 measures numerical value sum respectively, and the vinyl chloride quantity as in polyplant simultaneously can real-time display.This
Kind of metering device considers gaseous monomer and discharges influence to quality of material in polymeric kettle, realize in kettle material it is real-time, smart
Really metering, the result of calculation of metering display 6 replace the metric results of measuring instrument 5 in existing metering method, anti-as polymerization
The input signal of integration automatic control system is answered, the addition of other initiators etc. is controlled, realizes bulk polymerization
The accuracy of middle formula, the precision for improving process control, make the progress that polymerisation is more stable, so as to improve production product
Quality.
It is further, as shown in Fig. 2 the front-end configuration of second mass flowmenter 31 has pressure difference alarm filter
41st, the front-end configuration of the 3rd mass flowmenter 32 has pressure difference alarm filter 42, and filter 42 can be filtered out in gaseous monomer
The solid polymer contained, in order to avoid interference mass flowmenter normal operation., can be timely when gaseous monomer filter pressure difference is alarmed
Filter is cleaned, prevents influence of the polymer to mass flowmenter.
It is further, as shown in Fig. 2 the front-end configuration of first mass flowmenter 30 has pressure difference alarm filter
40, to improve the quality into the liquid monomer of polyplant.Substance law PVC polyplants in liquid and gas vinyl chloride because containing
PVC granule, mass flow meter measurement precision can be influenceed, so installing filter additional before mass flowmenter, PVC granule can be reduced
Influence to mass flowmenter.The utility model also solves polymeric kettle pipe stress pair when being measured using weighing sensor simultaneously
The influence of metering.
Claims (3)
1. the vinyl chloride metering device of substance law PVC polyplants, the PVC polyplants are provided with material inlet（10）With it is anti-
It should export, reaction outlet is included with reclaiming condenser（2）The first outlet of connection（11）, with reclaiming degasser（3）Connection
Second outlet（12）With the 3rd outlet as reactant discharging opening（13）, material inlet is equipped with inlet valve（20）, first goes out
Mouthful（11）, second outlet（12）With the 3rd outlet（13）First outlet valve is equipped respectively（21）, second outlet valve（22）With
Three outlet valves（23）, it is characterized in that：The first mass flowmenter suitable for Metering is provided with inlet valve front end, first
Outlet valve, the front end of second outlet valve are respectively arranged with the second mass flowmenter suitable for gas phase metering（31）, the 3rd mass
Flowmeter（32）, metering display（6）Respectively with each mass flowmenter（30、31、32）Signal connects.
2. the vinyl chloride metering device of substance law PVC polyplants as claimed in claim 1, it is characterized in that：Second matter
Measure flowmeter（31）, the 3rd mass flowmenter（32）Front end be respectively configured with pressure difference alarm filter（41、42）.
3. the vinyl chloride metering device of substance law PVC polyplants as claimed in claim 1 or 2, it is characterized in that：Described first
Mass flowmenter（30）Front-end configuration have pressure difference alarm filter（40）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720483594.5U CN206756235U (en) | 2017-05-04 | 2017-05-04 | The vinyl chloride metering device of substance law PVC polyplants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720483594.5U CN206756235U (en) | 2017-05-04 | 2017-05-04 | The vinyl chloride metering device of substance law PVC polyplants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206756235U true CN206756235U (en) | 2017-12-15 |
Family
ID=60616078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720483594.5U Active CN206756235U (en) | 2017-05-04 | 2017-05-04 | The vinyl chloride metering device of substance law PVC polyplants |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206756235U (en) |
-
2017
- 2017-05-04 CN CN201720483594.5U patent/CN206756235U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: YIBIN HAIFENG HERUI Co.,Ltd. Assignor: YIBIN TIANYUAN GROUP Co.,Ltd. Contract record no.: X2023980044414 Denomination of utility model: Vinyl chloride metering device for bulk PVC polymerization plant Granted publication date: 20171215 License type: Common License Record date: 20231030 |
|
| EE01 | Entry into force of recordation of patent licensing contract |