CN206960170U - A kind of polyolefin catalyst sampler - Google Patents
A kind of polyolefin catalyst sampler Download PDFInfo
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- CN206960170U CN206960170U CN201720777507.7U CN201720777507U CN206960170U CN 206960170 U CN206960170 U CN 206960170U CN 201720777507 U CN201720777507 U CN 201720777507U CN 206960170 U CN206960170 U CN 206960170U
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Abstract
A kind of polyolefin catalyst sampler, to extract the polyolefin catalyst of a catalyst storage tank, it is characterised in that include：One sampling tank body, provided with the two-port being mutually correspondingly arranged, the two-port is respectively equipped with upper cover, low head, and upper cover, low head and the two-port are tightly connected；One first nitrogen displacement unit, including one first nitrogen blow valve port, exhaust outlet and the Nitrogen source gases being connected with the first nitrogen blow valve port, the first nitrogen blow valve port and the exhaust outlet are arranged on the upper cover；One sample injection unit, including a tank bottom main valve and the sampling connector that is connected with the tank bottom main valve, the tank bottom main valve are connected with the low head, and the sampling connector is drawn from the tank bottom main valve；One second nitrogen displacement unit, including the second nitrogen blow valve port, a pressure relief opening, the second nitrogen blow valve port and the pressure relief opening are connected with the tank bottom main valve.
Description
Technical field
Field of olefin polymerisation is the utility model is related to, more particularly, to the sampler of polyolefin catalyst.
Background technology
The core of olefinic polymerization is catalyst.The industrial catalyst majority applied to olefinic polyreaction is solid at present
Granular pattern, also a kind of is by complicated process for preparation, by catalyst preparation into finite concentration by solid particle type catalyst
Slurries or paste.Polyolefin catalyst generally has very high activity, the minor fluctuations of catalyst index, will result in poly-
Close and react unstable, cause the caking in product quality fluctuation or reactor.Existing polyolefin device does not produce polyene generally
Hydrocarbon catalyst, its polyolefin catalyst needed are usually required to polyolefin catalyst manufacturer's outsourcing.Polyolefin catalyst is given birth to
Business men after grade polyolefin catalyst is mass-produced, by its it is batches of be fitted into catalyst storage tank, then through nitrogen-sealed
After transport to using on polyolefin device.In transportation, due to reasons such as road jolts, the sealing differences of catalyst tank,
Catalyst storage tank occurs leakage and happened occasionally, and causes the poor activity of catalyst.Additionally due to polyolefin catalyst preparation process
In, the parameter fluctuation between batch is larger, performance difference between the catalyst batch that will also result in, the stabilization to manufacture of polyolefins device
Production brings great test.Therefore, need to be sampled catalyst analysis before catalyst is added into polymer reactor,
Whether equality circuit polymerization requires the index of confirmation catalyst.
In olefinic polymerization device, polyolefin catalyst need to completely cut off air storage and sampling, and this requires catalyzed polyolefin
Agent is in nitrogen pressure sealing state.Due to the particle very little of polyolefin catalyst, its particle diameter is typically smaller than 200 μm.It is being catalyzed
In agent sampling process, because the pressure of catalyst storage tank is high, catalyst granules escapes from sample point.In addition in the activity of catalyst
The heart is mostly poisonous and hazardous precious metal atom, misoperation or catalyst leakage in atmosphere after, the person of sampling personnel is pacified
Bring injury entirely.
When being sampled in existing polyolefin device, the sample tap valve of catalyst storage tank is directly opened, is used on sample tap side
Nitrogen purging protection side is collected with grournd glass container to catalyst.To remaining in the residual catalyst on sample tap pipeline
The method for tapping pipeline frequently with inert gas blowback or vibrations.Pipe arrangement is added using the method for inert gas blowback
And engineering cost, the method tapped using vibrations are easily destroyed the weld bond of pipeline.Therefore how to polyolefin catalyst safety
Sampling is the key issue for needing polyolefin industry in the urgent need to address.
Utility model content
The utility model aims to overcome that the defects of existing polyolefin catalyst sampling is present, there is provided a kind of safety can
The polyolefin catalyst sampler leaned on, its good leak tightness is free from environmental pollution, can effectively protect the personal safety of operating personnel.
To achieve the above object, polyolefin catalyst sampler provided by the utility model, to extract a catalysis
The polyolefin catalyst of agent storage tank, comprising：
One sampling tank body, provided with the two-port being mutually correspondingly arranged, the two-port is respectively equipped with upper cover, low head,
Upper cover, low head and the two-port are tightly connected；
One first nitrogen displacement unit, including one first nitrogen blow valve port, exhaust outlet and with first nitrogen purge
One Nitrogen source gases of mouth connection, the first nitrogen blow valve port and the exhaust outlet are arranged on the upper cover；
One sample injection unit, including a tank bottom main valve and the sampling connector that is connected with the tank bottom main valve, the tank bottom
Main valve is connected with the low head, and the sampling connector is drawn from the tank bottom main valve；
One second nitrogen displacement unit, including the second nitrogen blow valve port, a pressure relief opening, the second nitrogen blow valve port and
The pressure relief opening is connected with the tank bottom main valve.
Described polyolefin catalyst sampler, it is characterised in that the first nitrogen blow valve port, the exhaust outlet,
The sampling connector, the pressure relief opening, the second nitrogen blow valve port are equipped with valve.
Described polyolefin catalyst sampler, it is characterised in that before sampling, carried out for the first time to sampling tank interior
Gas displacement, all valves are closed, the first nitrogen blow valve port is connected with source nitrogen, open the first nitrogen blow valve port
On valve and the exhaust outlet on valve, nitrogen is injected into gas displacement 10-20 times, first time gas in the sampling jar body
All valves on sampler are closed after the completion of body displacement.
Described polyolefin catalyst sampler, it is characterised in that before sampling, first urged with described the tank bottom main valve
Pipeline carries out second of gas displacement between agent holding vessel, and the sampling connector is connected with the catalyst storage tank,
The valve at the second nitrogen blow valve port is opened, and opens the valve gas on the valve and pressure relief opening on sampling connector simultaneously
Displacement 5-10 times, all valves on sampler are closed after second of gas displacement.
Described polyolefin catalyst sampler, it is characterised in that it is sampled after second of gas displacement terminates,
Tank bottom main valve, the valve on valve and exhaust outlet on sampling connector are opened during sampling, after sampling terminates, closes sampling dress
Put all valves.
Described polyolefin catalyst sampler, it is characterised in that sampling is opened on the second nitrogen blow valve port after terminating
Valve and pressure relief opening on valve, nitrogen purges to residual catalyst at the sampling connector, and by the residual
Catalyst is expelled to the pressure relief opening, after the completion of being purged to residual catalyst, closes all valves on sampler.
Described polyolefin catalyst sampler, it is characterised in that after the completion of residual catalyst purging, by sampler
Disconnected with catalyst storage tank.
The utility model provides polyolefin catalyst sampler and can be used for the isolation of polyolefin catalyst solid particulate matter empty
Gas samples, and can avoid assembling catalyst granules in sampling line when sampling and terminating, and avoids blocking sample tap and pollutes ring
Border.Simultaneously simple in construction, cost reduces, and can protect sampling personnel.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model first embodiment.
Fig. 2 is the structural representation of the utility model second embodiment.
Wherein reference is：
Sample tank body 1
Upper cover 2
First nitrogen blow valve port 3
Exhaust outlet 4
Low head 5
Tank bottom main valve 6
Sample connector 7
Pressure relief opening 8
Second nitrogen blow valve port 9
Protective cover 10
Embodiment
Where the characteristics of in order to know more about the utility model, hereby lift following examples and cooperation figure is described as follows, the reality
The polyolefin catalyst sampler that example is provided is applied, for taking out the polyolefin catalyst in catalyst storage tank, the polyolefin
Catalyst can not burn with air contact and easily, have certain toxicity, it is necessary to be sampled under isolation, the sampler bag
The tank body 1 containing sampling, the first nitrogen displacement unit, upper cover 2, low head 5, sample injection unit, the second nitrogen displacement unit.
As shown in figure 1, Fig. 1 is the structural representation of the utility model first embodiment.The sampling tank body 1 has both ends
Mouthful, the interior medium altitude chamber for being provided with accommodating polyolefin catalyst, the shape of sampling tank body 1 is not limited with cylindric.Two-port is located at
The opposite end of tank body, upper cover 2 and low head 5 are tightly connected with sampling the two-port of tank body 1 respectively, will sample tank body
1 two-port sealing.
Upper cover 2 connects one first nitrogen displacement unit, and the first nitrogen displacement unit is sampled in tank body 1 to discharge
Air, the first nitrogen displacement unit include one first nitrogen blow valve port 3, exhaust outlet 4 and connected with the first nitrogen blow valve port 3
The Nitrogen source gases connect, the first nitrogen blow valve port 3 and exhaust outlet 4 are arranged on upper cover 2.Before sampling, to sampling tank body
Inside carries out first time gas displacement, closes all valves, the first nitrogen blow valve port is connected with source nitrogen (not shown),
The valve on the valve and the exhaust outlet on the first nitrogen blow valve port is opened, nitrogen is injected into gas in the sampling jar body
Body is replaced 10-20 times, and all valves on sampler are closed after the completion of first time gas displacement.
Low head 5 is provided with sample injection unit and the second nitrogen displacement unit, in detail it, sample injection unit includes a tank bottom main valve
6 and the sampling connector 7 that is connected with the tank bottom main valve 6；Second nitrogen displacement unit is let out including the second nitrogen blow valve port 9, one
Mouth 8 is pressed, the second nitrogen blow valve port 9 and the pressure relief opening 8 are connected by the tank bottom main valve 6 with the upper cover 2.First nitrogen
Blow valve port 3, the exhaust outlet 4, the sampling connector 7, the pressure relief opening 8, the second nitrogen blow valve port 9 are equipped with valve.Second nitrogen
Gas replaces unit to discharge the air between sampling tank body 1 and catalyst storage tank on pipeline so that catalyst is in isolation air
Under conditions of take out, in addition, the second nitrogen displacement unit also can be used to will be remained in after the completion of sampling sampling connector 7 at it is residual
Stay catalyst purge to fall, residual catalyst is discharged through pressure relief opening 8.Before sampling, first to the tank bottom main valve and the catalyst
Pipeline between holding vessel carries out second of gas displacement, and the sampling connector is passed through into a sampling line and the catalyst
Holding vessel (not shown) connect, open the second nitrogen blow valve port at valve, and simultaneously open sampling connector on valve with
And the valve gas displacement on pressure relief opening 8 5-10 times, all valves on sampler are closed after second of gas displacement.When second
Secondary gas displacement is sampled after terminating, and tank bottom main valve is opened during sampling, on valve and exhaust outlet on sampling connector
Valve, after sampling terminates, close all valves on sampler.Sampling opened after terminating valve on the second nitrogen blow valve port and
Valve on pressure relief opening, nitrogen is purged to residual catalyst at the sampling connector, and the residual catalyst is arranged
Go out to the pressure relief opening, after the completion of being purged to residual catalyst, close all valves on sampler.
As shown in Fig. 2 Fig. 2 is the structural representation of the utility model second embodiment.The utility model second embodiment
Catalyst sampler it is roughly the same with the catalyst sampler structure of first embodiment, difference is this implementation
Also include a protection location in example, in order that sampler is without damage in transportation, special protection is upper cover 2 with
Valve on end socket 5 is not damaged, and spy sets the protection location, and the protection location is a pair of protective covers 10, with the sampling tank body 1
Two-port threaded connection, and cover is set on the upper cover 2 and the low head 5 respectively.
Polyolefin catalyst sampler to provide above-described embodiment has further understanding, especially exemplified by grasping in detail below
Make process description：
Before sampler sampling, dismantle and be arranged at the protective cover 10 of the sampling two-port of tank body 1.Then to sampling
The inside of tank body 1 carries out first time gas displacement, closes all valves, the first gas blow valve port is connected with source nitrogen, opens
The valve on valve and the exhaust outlet 4 on the first nitrogen blow valve port, nitrogen is injected into gas in the sampling tank body 1
Displacement 10-20 times, all valves on sampler are closed after the completion of first time gas displacement.Its benefit is emptying sampling tank body 1
Interior air is to prevent catalyst from air to be sampled.
Prepare sampling after the completion of first time gas displacement, during preparing to sample, first to the tank bottom main valve 6 and institute
State and carry out second of gas displacement between catalyst storage tank, second of gas displacement comprises the following steps：
Step 1, the sampling connector 7 is connected connection by a sampling line with the catalyst storage tank first.
Step 2, the valve at the second nitrogen blow valve port 9 is opened, nitrogen is injected into sampling line, and opens sampling simultaneously and connects
Valve gas displacement 5-10 times on valve and exhaust outlet 4 on interface 7, completes second of gas displacement.
Step 3, all valves on all samplers are closed after second of gas displacement.
It is sampled after second of gas displacement terminates, comprises the following steps during sampling：
Be first turned on tank bottom main valve 6, sampling connector 7 on valve and pressure relief opening 8 on valve.
Secondly, after sampling terminates, all valves on sampler are closed.
Sampling purges after terminating to residual catalyst, comprises the following steps：
The valve being first turned on the valve and pressure relief opening 8 on the second nitrogen blow valve port 9, nitrogen is to the sampling connector
Residual catalyst is purged at 7, and remaining catalyst is expelled into the pressure relief opening 8；
Secondly, after the completion of being purged to residual catalyst, all valves on sampler are closed.
Finally, after the completion of residual catalyst purging, sampler and catalyst storage tank is disconnected, protective cover 10 is passed through into spiral shell
Line is connected in the sampling two-port of tank body 1.
Claims (7)
- A kind of 1. polyolefin catalyst sampler, to extract the polyolefin catalyst of a catalyst storage tank, it is characterised in that Comprising：One sampling tank body, provided with the two-port being mutually correspondingly arranged, the two-port is respectively equipped with upper cover, low head, upper envelope Head, low head and the two-port are tightly connected；One first nitrogen displacement unit, including one first nitrogen blow valve port, exhaust outlet and with the first nitrogen blow valve port connect The Nitrogen source gases connect, the first nitrogen blow valve port and the exhaust outlet are arranged on the upper cover；One sample injection unit, including a tank bottom main valve and the sampling connector that is connected with the tank bottom main valve, the tank bottom main valve It is connected with the low head, the sampling connector is drawn from the tank bottom main valve；One second nitrogen displacement unit, including the second nitrogen blow valve port, a pressure relief opening, the second nitrogen blow valve port and described Pressure relief opening is connected with the tank bottom main valve.
- 2. polyolefin catalyst sampler as claimed in claim 1, it is characterised in that the first nitrogen blow valve port, institute State exhaust outlet, the sampling connector, the pressure relief opening, the second nitrogen blow valve port and be equipped with valve.
- 3. polyolefin catalyst sampler as claimed in claim 2, it is characterised in that before sampling, to sampling tank interior First time gas displacement is carried out, all valves is closed, the first nitrogen blow valve port is connected with source nitrogen, opens described first The valve on valve and the exhaust outlet on nitrogen blow valve port, nitrogen is injected into gas displacement 10-20 in the sampling jar body It is secondary, all valves on sampler are closed after the completion of first time gas displacement.
- 4. polyolefin catalyst sampler as claimed in claim 3, it is characterised in that first total to the tank bottom before sampling Pipeline carries out second of gas displacement between valve and the catalyst storage tank, and the sampling connector is stored up with the catalyst Tank connection is deposited, opens the valve at the second nitrogen blow valve port, and is opened simultaneously on the valve and pressure relief opening on sampling connector Valve gas displacement 5-10 times, all valves on sampler are closed after second of gas displacement.
- 5. polyolefin catalyst sampler as claimed in claim 4, it is characterised in that after second of gas displacement terminates It is sampled, tank bottom main valve, the valve on valve and exhaust outlet on sampling connector is opened during sampling, after sampling terminates, Close all valves on sampler.
- 6. polyolefin catalyst sampler as claimed in claim 5, it is characterised in that sampling opens the second nitrogen after terminating The valve on valve and pressure relief opening on blow valve port, nitrogen purge to residual catalyst at the sampling connector, and will The residual catalyst is expelled to the pressure relief opening, after the completion of being purged to residual catalyst, closes all valves on sampler.
- 7. polyolefin catalyst sampler as claimed in claim 6, it is characterised in that after the completion of residual catalyst purging, Sampler and catalyst storage tank are disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720777507.7U CN206960170U (en) | 2017-06-30 | 2017-06-30 | A kind of polyolefin catalyst sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720777507.7U CN206960170U (en) | 2017-06-30 | 2017-06-30 | A kind of polyolefin catalyst sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206960170U true CN206960170U (en) | 2018-02-02 |
Family
ID=61386467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720777507.7U Active CN206960170U (en) | 2017-06-30 | 2017-06-30 | A kind of polyolefin catalyst sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206960170U (en) |
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2017
- 2017-06-30 CN CN201720777507.7U patent/CN206960170U/en active Active
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