CN217132638U - Raw material sampling device for preparing olefin polymerization catalyst - Google Patents
Raw material sampling device for preparing olefin polymerization catalyst Download PDFInfo
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- CN217132638U CN217132638U CN202220565152.6U CN202220565152U CN217132638U CN 217132638 U CN217132638 U CN 217132638U CN 202220565152 U CN202220565152 U CN 202220565152U CN 217132638 U CN217132638 U CN 217132638U
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Abstract
The utility model provides a raw materials sampling device for preparation of olefin polymerization catalyst belongs to experimental apparatus technical field. The raw material sampling device comprises a sampling tank body, wherein the sampling tank body is cylindrical in the middle and hemispherical at two ends; the top end of the sampling tank body is connected with a sampling valve through a pipeline, the sampling valve is connected with a three-way valve through a pipeline, and the other two ends of the three-way valve are respectively connected with a raw material refining storage tank pipeline and a solvent recovery pipeline; the bottom end of the sampling tank body is provided with a flanging plug interface, and a flanging plug is arranged on the flanging plug interface; the bottom end of the sampling tank body is connected with a nitrogen purge valve through a pipeline; the upper part of the sampling tank body is connected with a liquid discharge valve through a pipeline. The utility model provides a device mainly used is used for the raw materials sample of olefin polymerization catalyst preparation, reasonable mating reaction between each part, can be so that when taking a sample, sampling device is in the sample of being convenient for of nitrogen protection state, effectively avoids the contact of raw materials and air, has stronger using value.
Description
Technical Field
The utility model belongs to the technical field of experimental apparatus, especially, relate to a raw materials sampling device for preparation of olefin polymerization catalyst.
Background
The preparation of the olefin polymerization catalyst has extremely strict requirements on water and oxygen, particularly the requirement on the water content in the raw materials is strict, the raw materials such as a solvent and the like for preparing the olefin polymerization catalyst can directly contact with active centers, the active centers can be deactivated by the high water content, and the water content of part of the raw materials needs to be controlled below 5 ppm.
The quality of the raw material sampling device can directly influence the water content in the raw material. The existing raw material sampling device for preparing the olefin polymerization catalyst mainly comprises two types, wherein one type is a conical bottle sealed by a rubber plug, and a rubber plug is used for sampling at the sealing position of the rubber plug. The other method is vacuum sampling, the method can sample in a vacuum state to isolate the contact between air and the raw material, and can truly reflect the water content of the raw material, but the method has complicated equipment, needs a vacuum pump, a cold trap and liquid nitrogen, is inconvenient to carry, cannot recycle waste liquid generated by the cold trap, has strict requirement on the air tightness of the equipment in the vacuum state, and can cause the rise of the water content measured value because the air rapidly flows back into a sampling tank once a leakage point exists.
Disclosure of Invention
The utility model provides a raw materials sampling device for preparation of olefin polymerization catalyst, this device can effectively avoid the contact of sample in-process raw materials and air.
The utility model provides a raw materials sampling device for preparation of olefin polymerization catalyst, include:
the device comprises a three-way valve, a sampling tank body, a liquid discharge valve, a flanging plug, a nitrogen purge valve, a flanging plug connector, a raw material refining storage tank pipeline and a solvent recovery pipeline;
the middle of the sampling tank body is cylindrical, and the two ends of the sampling tank body are hemispheres;
the top end of the sampling tank body is connected with a sampling valve through a pipeline, the sampling valve is connected with a three-way valve through a pipeline, and the other two ends of the three-way valve are respectively connected with a raw material refining storage tank pipeline and a solvent recovery pipeline;
the bottom end of the sampling tank body is provided with a flanging plug connector, and a flanging plug is arranged on the flanging plug connector; the bottom end of the sampling tank body is connected with a nitrogen purge valve through a pipeline;
the upper part of the sampling tank body is connected with a liquid discharge valve through a pipeline.
Further, the turnover plug is a rubber turnover plug.
Further, the three-way valve is a stainless steel three-way valve.
Further, the raw material refining storage tank pipeline is used for being connected with the raw material refining storage tank.
Furthermore, the raw material refining storage tank pipeline is detachably connected with the raw material refining storage tank.
Further, the solvent recovery pipeline is used for being connected with the solvent recovery tank.
Further, the solvent recovery pipeline is detachably connected with the solvent recovery tank.
Further, the nitrogen purge valve is connected to a nitrogen source via a line.
Further, in the sampling process, the raw material sampling device needs to be vertically placed.
The utility model has the advantages of it is following:
the utility model provides a raw materials sampling device for preparation of olefin polymerization catalyst, including three-way valve, sample valve, the sample jar body, flowing back valve, turn over a mouthful stopper, nitrogen gas purge valve, turn over a mouthful stopper interface etc. the device structural design is simple ingenious, mutually supports between each part. Wherein, the nitrogen purge valve can be used for nitrogen replacement of the sampling tank, raw material liquid discharge during sampling and nitrogen protection during analysis and test. The drain valve can be used for discharging raw materials to ensure the sampling amount. The flanging plug interface and the flanging plug can be used for discharging raw material liquid during sampling and sampling points during water content test analysis. The three-way valve can be used for discharging residual raw materials to the solvent recovery tank after sampling is finished. Due to the reasonable matching effect of all the parts, the sampling device is in a nitrogen protection state during sampling, so that the sampling is facilitated, the raw materials are effectively prevented from contacting with air, and the application value is high.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural diagram of the device of the present invention;
description of reference numerals:
1-three-way valve; 2-a sampling valve; 3-a sampling tank; 4-drain valve; 5, turning over the opening plug; 6-nitrogen purge valve; 7-flanging plug interface; 8-raw material refining storage tank pipeline; 9-solvent recovery pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. In the case of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.
Referring to fig. 1, the present invention provides a raw material sampling device for preparing olefin polymerization catalyst, comprising:
the device comprises a three-way valve 1, a sampling valve 2, a sampling tank body 3, a liquid discharge valve 4, a flanging plug 5, a nitrogen purge valve 6, a flanging plug connector 7, a raw material refining storage tank pipeline 8 and a solvent recovery pipeline 9;
the sampling tank body 3 is cylindrical in the middle and hemispherical at two ends;
the top end of the sampling tank body 3 is connected with a sampling valve 2 through a pipeline, the sampling valve 2 is connected with a three-way valve 1 through a pipeline, and the other two ends of the three-way valve 1 are respectively connected with a raw material refining storage tank pipeline 8 and a solvent recovery pipeline 9;
the bottom end of the sampling tank body 3 is provided with a flanging plug connector 7, and the flanging plug connector 7 is provided with a flanging plug 5; the bottom end of the sampling tank body 3 is connected with a nitrogen purge valve 6 through a pipeline;
the upper part of the sampling tank body 3 is connected with a liquid discharge valve 4 through a pipeline.
The utility model provides a raw materials sampling device, structural design is simple reasonable, and equipment cost is low, and convenient operation, raw materials expose in the air when can effectively avoiding taking a sample, make the test result more accurate. The discharged raw materials can be recycled, refined and reused, and the waste of the raw materials is avoided.
The utility model discloses in, set up the three-way valve between the refined storage tank of sample valve and raw materials, during the sample, connect sample valve and the refined storage tank pipeline of raw materials, disconnection left side solvent recovery pipeline. After the sample is finished, connect refined storage tank of raw materials, sample valve and solvent recovery's pipeline, be favorable to arranging in the solvent recovery bucket with remaining raw materials in the pipeline.
The utility model discloses in, the upper portion of the sampling jar body sets up the flowing back valve for confirm whether the raw materials sample finishes, close sampling tank bottoms turn over a mouthful stopper interface, nitrogen gas purge valve, the raw materials is at the internal accumulation of sampling jar gradually, has the raw materials to flow when the flowing back valve, and the raw materials sample can be ended promptly.
Further, the turnover plug 5 is a rubber turnover plug. The utility model discloses in, the bottom of the sampling tank jar body sets up the plug interface that turns over a mouthful, is equipped with rubber plug that turns over a mouthful on it, and the analyst of being convenient for takes a sample through here and tests.
Further, the three-way valve 1 is a stainless steel three-way valve.
Further, the raw material refining storage tank pipeline 8 is used for connecting with a raw material refining storage tank (not shown).
Preferably, the raw material refining storage tank pipeline 8 is detachably connected with the raw material refining storage tank. The raw material refining storage tank pipeline 8 is detachably connected with the raw material refining storage tank through a rubber hose. Specifically, the raw material refining storage tank pipeline 8 is a hard pipe (for example, a stainless steel pipe), and an interface on the raw material refining storage tank is a hard pipe (for example, a stainless steel pipe). The raw material refining storage tank pipeline 8 of the hard pipe is detachably connected with the hard pipe interface on the raw material refining storage tank through a rubber hose, and the rubber hose can be sleeved on the hard pipes at two ends, so that sealed communication is realized. More preferably, the raw material refining storage tank is connected with an on-off valve.
Further, the solvent recovery line 9 is adapted to be connected to a solvent recovery tank (not shown).
Preferably, the solvent recovery pipeline 9 is detachably connected with the solvent recovery tank. The solvent recovery pipeline 9 is detachably connected with the solvent recovery tank through a rubber hose. Specifically, the solvent recovery line 9 is a hard pipe (for example, a stainless steel pipe), and the interface of the solvent recovery tank is a hard pipe (for example, a stainless steel pipe). The solvent recovery pipeline 9 of the hard pipe is detachably connected with a hard pipe interface on the solvent recovery tank through a rubber hose. The rubber hose can be sleeved on the hard pipes at the two ends, so that sealing communication is realized.
Further, the nitrogen purge valve 6 is connected to a nitrogen source through a line.
Further, in the sampling process, the raw material sampling device needs to be vertically placed. During the sample, the vertical placement of raw materials sampling device can obtain better nitrogen protection effect. After sampling, the raw material sampling device is in a closed state under the protection of nitrogen, and the device can be poured or inverted.
The utility model discloses the implementation process, including following step:
(1) the nitrogen purging valve 6 is connected with a nitrogen source through a pipeline, the nitrogen purging valve 6 is opened to continuously introduce nitrogen from the bottom of the device, the turnover plug 5, the liquid discharge valve 4, the sampling valve 2 and the three-way valve 1 are opened, the sampling tank body 3 is in a nitrogen protection state through continuous nitrogen purging, the raw material refining storage tank pipeline 8 and the solvent recovery pipeline 9 are in the nitrogen protection state, and all valves are closed after the nitrogen purging is completed.
(2) Open nitrogen gas purge valve 6 and continuously let in nitrogen gas, open sampling valve 2, adjust three-way valve 1, make the refined storage tank pipeline of raw materials 8 and the 9 homogeneous phases of solvent recovery pipeline that three-way valve 1 connects communicate, under nitrogen protection, link to each other the refined storage tank of raw materials and the refined storage tank pipeline of raw materials 8, through this kind of mode with the refined storage tank of raw materials connection, can effectively avoid pressure too big, the pipeline collapses out and opens. Then the three-way valve 1 is adjusted to connect the pipeline 8 of the raw material refining storage tank only with the pipeline of the sampling valve 2, and the solvent recovery pipeline 9 at the left side is disconnected to keep the tank body 3 of the sampling tank communicated with the raw material refining storage tank.
(3) Open the ooff valve from taking on the refined storage tank of raw materials, make the raw materials flow from the refined storage tank of raw materials, open sample valve 2 in proper order, turn over a mouthful stopper 5, nitrogen gas purge valve 6, under the effect of gravity, the raw materials is constantly discharged to the solvent recycling bin (be used for retrieving sample in-process exhaust solvent) from turning over a mouthful stopper interface 7, nitrogen gas purge valve 6 to discharge the front end raw materials that the data is not too accurate, obtain the more accurate interlude raw materials of data. Then the turning plug 5 and the nitrogen purge valve 6 are closed, the liquid discharge valve 4 is opened until the liquid discharge valve 4 discharges the solution, at the moment, all valves including the switch valve on the raw material refining storage tank are closed, and the sampling is finished.
(4) Adjust three-way valve 1 for raw materials refined storage tank pipeline 8, solvent recovery pipeline 9 and 2 pipeline three routes of sampling valve link to each other, suitably empty raw materials sampling device, dismantle the rubber hose on the refined storage tank pipeline 8 of raw materials and the solvent recovery pipeline 9 that link to each other with three-way valve 1, remaining solution to solvent recovery bucket (be used for retrieving the discharged solvent in the sampling process) in the discharge line. Meanwhile, the sampling tank body 3 can be detached and moved to an analysis and inspection room for detection.
(5) When carrying out the analysis and test to the interior raw materials of the sampling tank jar body 3, invert the sampling tank jar body 3, the bottom of the sampling tank jar body becomes upper portion promptly, the upper portion of the sampling tank jar body becomes the bottom. Under the protection of nitrogen, the double-row pipe can be connected through the nitrogen purge valve 6 for nitrogen protection, and the flanging plug interface 7 can be used for a sampling point of moisture test, for example, a raw material in the sampling tank body 3 can be moved and analyzed through the flanging plug 5 of rubber by an injector with a needle tube.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A feed sampling device for use in olefin polymerization catalyst preparation, comprising:
the device comprises a three-way valve (1), a sampling valve (2), a sampling tank body (3), a liquid discharge valve (4), a flanging plug (5), a nitrogen purge valve (6), a flanging plug connector (7), a raw material refining storage tank pipeline (8) and a solvent recovery pipeline (9);
the sampling tank body (3) is cylindrical in the middle and hemispherical at two ends;
the top end of the sampling tank body (3) is connected with a sampling valve (2) through a pipeline, the sampling valve (2) is connected with a three-way valve (1) through a pipeline, and the other two ends of the three-way valve (1) are respectively connected with a raw material refining storage tank pipeline (8) and a solvent recovery pipeline (9);
the bottom end of the sampling tank body (3) is provided with a flanging plug connector (7), and the flanging plug connector (7) is provided with a flanging plug (5); the bottom end of the sampling tank body (3) is connected with a nitrogen purge valve (6) through a pipeline;
the upper part of the sampling tank body (3) is connected with a liquid discharge valve (4) through a pipeline.
2. The material sampling device of claim 1,
the turnover plug (5) is a rubber turnover plug.
3. The material sampling device of claim 1,
the three-way valve (1) is a stainless steel three-way valve.
4. The material sampling device of claim 1,
and the raw material refining storage tank pipeline (8) is used for being connected with the raw material refining storage tank.
5. The material sampling device of claim 4,
the raw material refining storage tank pipeline (8) is detachably connected with the raw material refining storage tank.
6. The material sampling device of claim 1,
the solvent recovery pipeline (9) is used for being connected with the solvent recovery tank.
7. The material sampling device of claim 6,
the solvent recovery pipeline (9) is detachably connected with the solvent recovery tank.
8. The material sampling device of claim 1,
the nitrogen purge valve (6) is connected with a nitrogen source through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220565152.6U CN217132638U (en) | 2022-03-15 | 2022-03-15 | Raw material sampling device for preparing olefin polymerization catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220565152.6U CN217132638U (en) | 2022-03-15 | 2022-03-15 | Raw material sampling device for preparing olefin polymerization catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217132638U true CN217132638U (en) | 2022-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220565152.6U Active CN217132638U (en) | 2022-03-15 | 2022-03-15 | Raw material sampling device for preparing olefin polymerization catalyst |
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| Country | Link |
|---|---|
| CN (1) | CN217132638U (en) |
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- 2022-03-15 CN CN202220565152.6U patent/CN217132638U/en active Active
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