CN206304709U - Slurry or liquid catalyst feeding device - Google Patents
Slurry or liquid catalyst feeding device Download PDFInfo
- Publication number
- CN206304709U CN206304709U CN201621275097.8U CN201621275097U CN206304709U CN 206304709 U CN206304709 U CN 206304709U CN 201621275097 U CN201621275097 U CN 201621275097U CN 206304709 U CN206304709 U CN 206304709U
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- CN
- China
- Prior art keywords
- slurries
- feed arrangement
- pressure
- gas delivery
- liquid catalyst
- Prior art date
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- 239000003054 catalyst Substances 0.000 title claims abstract description 89
- 239000007788 liquid Substances 0.000 title claims abstract description 53
- 239000002002 slurry Substances 0.000 title claims description 49
- 238000002360 preparation method Methods 0.000 claims abstract description 22
- 238000007599 discharging Methods 0.000 claims description 34
- 238000006073 displacement reaction Methods 0.000 claims description 17
- 238000012805 post-processing Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 238000006555 catalytic reaction Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 39
- 238000006116 polymerization reaction Methods 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- -1 polyethylene Polymers 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 150000001336 alkenes Chemical class 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 238000011020 pilot scale process Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000011002 quantification Methods 0.000 description 2
- 239000011949 solid catalyst Substances 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012685 gas phase polymerization Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model provides a thick liquid or liquid catalyst feed arrangement, a serial communication port, include: a catalyst preparation tank provided with an inlet and an outlet; the feeding metering unit is connected with the outlet of the catalyst preparation tank; the conveying unit is connected with the outlet of the feeding metering unit; and the gas distribution unit is connected with the outlet end of the conveying unit and converged and then connected with the post-treatment unit, and the catalyst from the conveying unit and the gas from the gas distribution unit are mixed and then output to the post-treatment unit.
Description
Technical field
The utility model is related to a kind of slurries or liquid catalyst feed arrangement, the feed arrangement to can be widely used in alkene
In polymerized hydrocarbon reaction process.
Background technology
Slurries or liquid catalyst are a kind of catalyst for gas phase polymerization of ethylene, and it is viscous that it is that one kind is dispersed in
Property liquid in suspension or solution state catalyst, solids content is 20% or so, and the particle diameter of solids is micro- less than 50
Rice.Compared with the solid catalyst of silica gel load, it is excellent that the active height of slurry catalyst, low cost, polymerization product quality are good etc.
Point, the trend of big substituted conventional solid catalyst.
The vaporific addition of the minimum flow of polymerization technique requirement slurries or liquid catalyst continuous-stable and precise control gathers
Close in reactor, it is unstable otherwise to will result in polymerisation, cause that product quality fluctuates or reactor lumps.
The slurries or liquid catalyst feeding device provided in Chinese patent 02269754, it mainly feeds including catalyst
Tank, connected microfeeder, hydraulic oil control system and atomizer, although the charging system can realize slurries
Or the charging of liquid catalyst steady and continuous, but there is also catalyst sedimentation, concentration easily in feed-line and change etc. and ask
Topic, therefore the accuracy that influence feeds, and then influence the stabilization of polymerisation.
A set of slurries feeding device is disclosed in CN200510102423.5, the device includes slurry catalyst tank, conveying
Pump and at least one six-way valve and quantity tube, when need charging when, six-way valve evolution once, the catalyst quilt in quantity tube
It is absorbed in polymerization reaction system.By acting six-way valve, it is possible to achieve slurries or liquid catalyst stable and uniform, it is accurate plus
Material.
A kind of Shiny slurry precise dosing feeder is disclosed in CN200820060332, the device is from upstream to downstream
Viscous slurry mother liquor feed pot, premixer, the first additive a reactions surge tank, premixer, Second addition are sequentially set
B react surge tank and corresponding heat tracing loop, its feed process and device can control slurry concentration so that catalyst or its
The reaction-ure feeding accurate quantitative analysis such as his viscous slurry.
Utility model content
The purpose of this utility model be in order to realize slurries or liquid catalyst continuous-stable, the charging of accurate quantification and set
Meter.
To achieve the above object, the utility model is provided slurries or liquid catalyst feed arrangement, including：
Catalyst preparation tank, is provided with import, outlet；
Charging metering units, the outlet with the catalyst preparation tank is connected；
Supply unit, the outlet with the charging metering units is connected；
Gas delivery unit, is connected, from supply unit after being merged with the port of export of supply unit with post-processing unit
Exported to post-processing unit after catalyst and the gas mixing from gas delivery unit.
Described slurries or liquid catalyst feed arrangement, the charging metering units are further included：Two parallel connections are even
The volume-displacement for connecing, each volume-displacement top is equipped with two-way pipeline, wherein be all the way the first discharging pipeline, it is another
It is all the way pressure balance line, the first discharging pipeline is connected with the outlet of catalyst preparation pot bottom, another road pipeline and catalyst
The top of preparing tank connects to form the pressure balance line, and the bottom of the volume-displacement is equipped with the second discharging pipeline, two
The individual second discharging pipeline is connected after merging with the supply unit.
Described slurries or liquid catalyst feed arrangement, the supply unit further includes delivery pump and counterbalance valve,
The discharging pipeline of conveying pump discharge connection the 3rd, the 3rd discharging pipeline is connected with the post-processing unit, and the described 3rd
Discharging pipeline is provided with counterbalance valve, first pressure table, second pressure table, and the first pressure table is arranged at delivery pump and counterbalance valve
Between, second pressure table is arranged between counterbalance valve and post-processing unit.
Described slurries or liquid catalyst feed arrangement, the gas delivery unit further include an air supply source and
The gas delivery line of air supply source connection, along gas flow direction be sequentially provided with the gas delivery line pressure-reducing valve,
Gas flowmeter, is connected with the 3rd pressure gauge between pressure-reducing valve and gas flowmeter.
Described slurries or liquid catalyst feed arrangement, the gas delivery line is connected with the described 3rd discharging pipeline,
The gas delivery line is located at after second pressure table with the junction of the described 3rd discharging pipeline, on the gas delivery line
Check valve is provided with, the check valve is arranged at the end of the gas delivery line.
Described slurries or liquid catalyst feed arrangement, the post-processing unit is fluidized-bed reactor, in the stream
Atomizer is provided with fluidized bed reactor.
Described slurries or liquid catalyst feed arrangement, agitating device is additionally provided with the catalyst preparation tank.
Described slurries or liquid catalyst feed arrangement, the catalyst preparation tank is additionally provided with liquid level detection device.
Described slurries or liquid catalyst feed arrangement, first discharging pipeline, pressure balance line, two second go out described in two
Magnetic valve is equipped with expects pipe line.
The beneficial effects of the utility model：
Slurries of the present utility model or liquid catalyst feed arrangement can be widely used in olefin polymerization process,
Particularly in vapor phase method polyolefin polymerization process, such as Unipol polyethylene process commonly understood in the industry, Inovene polypropylene works
Skill etc..It has the advantages that charging high precision, inlet amount adjustable range are wide, feeds continuous and stable, and cost of investment is low, can be very
The need for meeting the various occasions from polymerization pilot scale to commercial Application well.
Brief description of the drawings
Fig. 1 is slurries or liquid catalyst feed arrangement structural representation.
Fig. 2 is charging metering units structural representation.
Wherein reference is：
Catalyst preparation tank 1
Liquid level detection device 11
Agitating device 12
Motor 13
Volume-displacement 2A
Volume-displacement 2B
First discharging pipeline 21
Second discharging pipeline 22
Pressure balance line 23
Magnetic valve 15A
Magnetic valve 15B
Magnetic valve 15C
Magnetic valve 15D
Magnetic valve 15E
Magnetic valve 15F
Delivery pump 3
3rd discharging pipeline 31
Counterbalance valve 311
First pressure table 312
Second pressure table 313
Air supply source 4
Gas delivery line 41
Pressure-reducing valve 42
Gas flowmeter 43
3rd pressure gauge 44
Check valve 45
Fluidized-bed reactor 5
Atomizer 51
Specific embodiment
A kind of slurries or liquid catalyst feed arrangement that the utility model is provided, including：Catalyst preparation tank 1, charging
Metering units, supply unit, gas delivery unit, post-processing unit.
Catalyst preparation tank 1, is provided with agitating device 12, such as agitating paddle in it, connection motor 13 in agitating paddle top is being urged
One liquid level detection device 11 is installed, the outlet of catalyst preparation tank 1 is located at pot bottom, catalyst preparation tank 1 on agent preparing tank 1
Outlet with charging metering units be connected.
Charging metering units include two volume-displacements being connected in parallel (2A, 2B), and each volume-displacement top is equal
Be provided with two-way pipeline, wherein all the way for first discharging pipeline 21, another road be pressure balance line 23, first discharging pipeline 21 with urge
The outlet connection of the bottom of agent preparing tank 1, another road pipeline connects to form pressure balance line with the top of catalyst preparation tank 1
23, the bottom of volume-displacement is equipped with the second discharging pipeline 22, and two second discharging pipelines 22 connect after merging with supply unit
Connect, magnetic valve is equipped with the first discharging pipeline 21, the discharging pipeline 22 of pressure balance line 23, second.
Supply unit connection includes delivery pump 3 and counterbalance valve 311, the discharging pipeline 31 of the outlet of delivery pump 3 connection the 3rd, the 3rd
Discharging pipeline 31 is connected with post-processing unit, and the 3rd discharging pipeline 31 is provided with counterbalance valve 311, first pressure table 312, second and presses
Power table 313, first pressure table 312 is arranged between delivery pump 3 and counterbalance valve 311, and second pressure table 313 is arranged at counterbalance valve
311 and post-processing unit, check valve 45 is provided with gas delivery line 41, check valve 45 is arranged at the end of gas delivery line 41
End, the 3rd discharging pipeline 31 is connected with a gas delivery unit.
Gas delivery unit includes the gas delivery line 41 that air supply source 4 and air supply source 4 are connected, along gas flow direction
Pressure-reducing valve 42, gas flowmeter 43 are sequentially provided with gas delivery line 41, are connected between pressure-reducing valve 42 and gas flowmeter 43
It is connected to the 3rd pressure gauge 44.Gas delivery line 41 is connected with the 3rd discharging pipeline 31 of gas delivery unit, gas delivery line 41
Junction with the 3rd discharging pipeline 31 is located at after second pressure table 313, catalyst from supply unit with come from gas
Exported to post-processing unit after the gas mixing for dispensing unit.
Post-processing unit is fluidized-bed reactor, and atomizer is provided with fluidized-bed reactor.
The utility model catalyst can be slurry catalyst or liquid catalyst, signified " slurry catalyst " refer to containing
The liquid of solid granule, " liquid catalyst " refers to the liquid without solid granule.Consolidating in general slurry catalyst
Body thing weight percentage is less than 75%.
In above-mentioned feed arrangement, what the purpose of this utility model was realized in：When charging is needed, slurries or liquid
The catalyst of shape by volume-displacement delivery pump 3 effect under, by after counterbalance valve 311 and pressure gauge, being connected to pressure
System, such as polymerization reaction system after supplying nitrogen feeding after table.It is thereby achieved that slurries or liquid catalyst continuous-stable,
The charging of accurate quantification.
In catalyst preparation tank 1, a kind of agitating device is optionally added into, so that the charging of catalyst is more uniform, it is special
It is not that, for slurry catalyst, setting agitating device 12 can avoid sedimentation of the catalyst in tank.Catalyst preparation tank 1 and enter
Expects pipe line (being not drawn into figure) should be furnished with electric with worm line, and outside is provided with heat-insulation layer, have strict requirements to heat tracing temperature, be also for
Avoid sedimentation of the slurry catalyst in tank and in pipeline.In addition, catalyst preparation tank 1 also can select the conventional liquid of the industry
Level detecting apparatus 11, specifically can be using various types such as glass, pressure difference, magnetic float, ultrasonic wave, electric capacity.
All kinds of liquid delivery pumps that delivery pump 3 can be used using industry, such as peristaltic pump, membrane pump, screw pump or
Plunger displacement pump etc..The pressure that counterbalance valve 311 sets is 0.1~1.0MPa with the pressure difference of reactor pressure, can be according to the dense of catalyst
The situation of degree, activity and polymerisation is arbitrarily adjusted.
Pressure that pressure-reducing valve 42 sets is 0.1~1.0MPa with the pressure difference of reactor pressure, can according to the concentration of catalyst,
The situation of activity and polymerisation is arbitrarily adjusted.
The value that gas flowmeter 43 sets is 0.5~15Nm3/ h, can be according to the concentration of catalyst, activity and polymerisation
Situation arbitrarily adjusted.
Further illustrated especially exemplified by specific examples below：
Embodiment 1
Fig. 1 is slurries or liquid catalyst feed arrangement, is used to provide slurries or liquid catalyst for polymerization reaction system.
Be connected with pressure gauge in gas delivery unit on gas delivery line 41 between pressure-reducing valve and gas flowmeter, gas delivery unit with
Supply unit connection is connected after merging with post-processing unit (fluidized-bed reactor, atomizer), connects in gas delivery cell end
Check valve 45 is connected to, atomizer is located inside fluidized-bed reactor, the optional Nitrogen source gases of source of the gas.
When charging is needed, then the situation setting pressure-reducing valve according to polymerization reaction system, the value of gas flowmeter starts
Delivery pump, the inlet amount of catalyst is adjusted by adjusting delivery pump in itself, concentration, activity and polymerisation according to catalyst
Situation to counterbalance valve, carry out appropriate adjustment, slurries or liquid catalyst are continuously sent into post-processing unit by supplying nitrogen.
Embodiment 2
Fig. 2 is the charging metering units of slurries or liquid catalyst, is made up of two volume-displacements and solenoid valve block.Hold
Product flowmeter can carry out size replacing, level gauge and magnetic valve composed cascade according to feed rate, when volume-displacement 16A liquid
To low setting value, magnetic valve 15E is closed potential drop, while magnetic valve 15B and 15F are opened；When volume-displacement 16A liquid levels rise paramount
Setting value, magnetic valve 15B is closed.Flowmeter 16B principles are in alternate run state as 16A with 16A.Magnetic valve 15A and
15C is constantly in opening, and UNICOM's state is in catalyst batch tank, prevents volume-displacement from building the pressure.Held by measuring
Time of the product flowmeter liquid level as used by setting value high is down to low setting value, cocatalyst feed rate can be accurately calculated, while
Ensure that catalyst charge is constantly in continuous state.
Slurries of the present utility model or liquid catalyst feed arrangement can be widely used in olefin polymerization process,
Particularly in vapor phase method polyolefin polymerization process, such as Unipol polyethylene process commonly understood in the industry, Inovene polypropylene works
Skill etc..It has the advantages that charging high precision, inlet amount adjustable range are wide, feeds continuous and stable, and cost of investment is low, can be very
The need for meeting the various occasions from polymerization pilot scale to commercial Application well.
Claims (9)
1. a kind of slurries or liquid catalyst feed arrangement, it is characterised in that including：
Catalyst preparation tank, is provided with import, outlet；
Charging metering units, the outlet with the catalyst preparation tank is connected；
Supply unit, the outlet with the charging metering units is connected；
Gas delivery unit, is connected, the catalysis from supply unit after being merged with the port of export of supply unit with post-processing unit
Exported to post-processing unit after agent and the gas mixing from gas delivery unit.
2. slurries as claimed in claim 1 or liquid catalyst feed arrangement, it is characterised in that the charging metering units enter
One step includes：Two volume-displacements being connected in parallel, each volume-displacement top is equipped with two-way pipeline, wherein one
Road is pressure balance line for the first discharging pipeline, another road, and the first discharging pipeline is connected with the outlet of catalyst preparation pot bottom,
Another road pipeline connects to form the pressure balance line with the top of catalyst preparation tank, and the bottom of the volume-displacement is all provided with
There are the second discharging pipeline, two the second discharging pipelines to be connected with the supply unit after merging.
3. slurries as claimed in claim 1 or 2 or liquid catalyst feed arrangement, it is characterised in that the supply unit enters
One step includes delivery pump and counterbalance valve, and conveying pump discharge connection the 3rd discharges pipeline, the 3rd discharging pipeline with it is described
Post-processing unit is connected, and the 3rd discharging pipeline is provided with counterbalance valve, first pressure table, second pressure table, first pressure
Power table is arranged between delivery pump and counterbalance valve, and second pressure table is arranged between counterbalance valve and post-processing unit.
4. slurries as claimed in claim 3 or liquid catalyst feed arrangement, it is characterised in that the gas delivery unit enters
One step includes the gas delivery line that an air supply source and the air supply source are connected, along gas flow direction in the gas delivery
Pressure-reducing valve, gas flowmeter are sequentially provided with line, the 3rd pressure gauge is connected between pressure-reducing valve and gas flowmeter.
5. slurries as claimed in claim 4 or liquid catalyst feed arrangement, it is characterised in that the gas delivery line and institute
State the 3rd discharging pipeline connection, the gas delivery line with the described 3rd discharging pipeline junction be located at second pressure table it
Afterwards, check valve is provided with the gas delivery line, the check valve is arranged at the end of the gas delivery line.
6. slurries as claimed in claim 1 or liquid catalyst feed arrangement, it is characterised in that the post-processing unit is stream
Fluidized bed reactor, atomizer is provided with the fluidized-bed reactor.
7. slurries as claimed in claim 1 or liquid catalyst feed arrangement, it is characterised in that in the catalyst preparation tank
It is additionally provided with agitating device.
8. slurries or liquid catalyst feed arrangement as described in claim 1 or 7, it is characterised in that the catalyst preparation
Tank is additionally provided with liquid level detection device.
9. slurries as claimed in claim 2 or liquid catalyst feed arrangement, it is characterised in that the first discharge nozzle described in two
Magnetic valve is equipped with line, pressure balance line, two second discharging pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621275097.8U CN206304709U (en) | 2016-11-25 | 2016-11-25 | Slurry or liquid catalyst feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621275097.8U CN206304709U (en) | 2016-11-25 | 2016-11-25 | Slurry or liquid catalyst feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206304709U true CN206304709U (en) | 2017-07-07 |
Family
ID=59244875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621275097.8U Active CN206304709U (en) | 2016-11-25 | 2016-11-25 | Slurry or liquid catalyst feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206304709U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821483A (en) * | 2019-03-28 | 2019-05-31 | 合盛硅业股份有限公司 | The automatic continuous adding method of catalyst and device |
-
2016
- 2016-11-25 CN CN201621275097.8U patent/CN206304709U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821483A (en) * | 2019-03-28 | 2019-05-31 | 合盛硅业股份有限公司 | The automatic continuous adding method of catalyst and device |
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