CN211425960U - Online sampling device of alkene liquid - Google Patents
Online sampling device of alkene liquid Download PDFInfo
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- CN211425960U CN211425960U CN201921696520.5U CN201921696520U CN211425960U CN 211425960 U CN211425960 U CN 211425960U CN 201921696520 U CN201921696520 U CN 201921696520U CN 211425960 U CN211425960 U CN 211425960U
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- sampling
- pipeline
- sample
- sampling device
- olefin
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- 238000005070 sampling Methods 0.000 title claims abstract description 101
- 150000001336 alkenes Chemical class 0.000 title claims abstract description 74
- 239000007788 liquid Substances 0.000 title claims abstract description 53
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims abstract description 53
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 claims description 14
- 238000010926 purge Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- -1 sweep pipeline Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 14
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 229920000098 polyolefin Polymers 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides an online sampling device of alkene liquid, sweep pipeline, sample pipeline, unloading pipeline, sample jar body, tank bottoms discharge line, sample jar fixer, manometer, protection casing base, antiskid cover cap, combustible gas alarm, handle, level gauge, heat preservation device including the total pipeline of sampling, nitrogen gas, all pipelines all are equipped with the valve. The device can be used for olefin liquid online isolated air sampling. The method has the advantages that the whole sampling process is carried out under a closed condition, so that the sample is prevented from leaking in the sampling process fundamentally, the sample can be prevented from contacting the outside, the purity and the accuracy of the sample are ensured, the environmental pollution is reduced, and the personal safety of operators is effectively protected. Meanwhile, the device has simple structure and low processing cost. The utility model discloses can realize providing a portable online sampling device, the sample that takes is representative, and repeatability is strong.
Description
Technical Field
The utility model belongs to olefin production and polymerization field especially relate to an online sampling device of olefin liquid.
Background
In recent years, the world economy has been increasing and the living standard of residents has been increasing, and the production of olefin industry is increasing as a tap of petrochemical industry. From the production configuration, in 2017, the world has 1.69 million tons of ethylene capacity and 1.51 million tons of yield, and the production is mainly concentrated in Asia, North America, the middle east and Western Europe and respectively accounts for 35%, 22%, 20% and 14% of the global total production energy. Asia is also central to propylene production, with propylene capacity accounting for 64% of total global production. In 2017, the world propylene capacity is 1.27 million tons, the yield is 1.02 million tons, and the total of North America, the middle east and Western Europe accounts for only 28 percent. Due to the increase of the total demand and the improvement of the technological level, the world olefin production is further developed towards large-scale and basic directions, and the industrial concentration is further improved. Currently, the annual capacity scale of over millions of tons of ethylene plants built in the world is nearly 40, and the maximum single-series ethylene plant scale reaches 150 million tons/year. In our country, a single set of devices with the ethylene scale of more than 80 million tons/year have 13 sets, and 9 sets are added compared with 2008.
Along with the development of the oil and gas industry and the coal chemical industry, the raw materials and production routes of the olefin industry are gradually changed, and ethane cracking and coal-to-olefin industry gradually occupy domestic markets. Because of the different routes of olefin production, the impurities contained in olefins vary widely. The olefin products produced by the device can leave a factory after being analyzed and detected to be qualified, and are provided for downstream users. For accurate detection, a certain amount of olefin sample needs to be taken on-line from the olefin line of the production plant. Polyolefins are furthermore the largest derivatives downstream of olefins. The development of polyolefin catalysts requires evaluation of the catalyst performance and also requires taking certain olefin samples from the polyolefin production plant. Sampling from a polyolefin production device and storing an olefin sample need to be isolated from air, and if the olefin sample is contacted with the air, the olefin sample is polluted, so that the catalyst is poisoned during an olefin polymerization test, and the performance of the catalyst is influenced; other gases mixed in the olefin sampling process can cause interference to factory indexes, and trade disputes are caused. In addition, olefin raw materials have certain toxicity, flammability and explosive property, and if olefin leakage is caused by improper operation, the olefin raw materials not only pollute the environment, but also bring harm to the personal safety of sampling personnel. Therefore, the sampling process needs to be convenient to operate and air-isolated, and residual gas in the sampler needs to be convenient to process after the sample is detected, so that a proper online sampling device is needed.
When the existing olefin production device is used for sampling olefin, a civil liquefied gas tank or a self-made temporary tank is often used. The structure of the tanks is unreasonable, olefin leakage can be caused in the sampling process, the environment is polluted, and the sampling personnel are injured; there is also a safety hazard in the storage of olefins. Patents CN207090180U, CN 206960158U, CN 206958597U, etc. disclose a series of olefin liquid sampling and storage devices, which can be used for sampling olefin isolated from air, and can prevent olefin leakage from polluting the environment during sampling. However, the series of devices are mainly used for storing olefin samples, and other inert gases are easy to mix when the series of devices are used for sampling, so that how to sample the olefin is a key problem which needs to be solved urgently in the olefin industry.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defect that current alkene liquid sample exists, provide a safe and reliable alkene liquid online sampling device, its seal is good, and the non-staining environment is not polluted by external gas simultaneously, can effectively protect operating personnel's personal safety.
In order to achieve the above object, the utility model provides an online sampling device of alkene liquid, include:
the sampling tank body (5) is fixed in a protective cover base (9) through a sampling tank fixer (7), and an anti-skid cover upper cap (10) is movably connected above the protective cover base (9);
one end of the main pipeline (1) is connected to the top of the tank body (5), and the other end of the main pipeline is respectively connected with the nitrogen purging pipeline (2), the sampling pipeline (3) and the emptying pipeline (4) through the four-way valve;
a tank bottom discharge pipeline (6) which is arranged at the bottom of the sampling tank body (5); and
and the pressure gauge (8) is arranged at the top of the sampling tank body (5).
The utility model provides an online sampling device of alkene liquid, wherein, preferentially, the end of nitrogen gas purge line (2), sampling pipeline (3), blow-down pipeline (4) and tank bottoms discharge line (6) all is furnished with the valve.
The utility model provides an online sampling device of alkene liquid, wherein, preferably, the valve all is in the closed condition before the sample.
The utility model provides an online sampling device of alkene liquid, wherein, preferably, still include combustible gas alarm (11), install on skid-proof cover cap (10) for whether detect alkene liquid leaks.
The utility model provides an online sampling device of alkene liquid, wherein, preferably, still include handle (12), install in protection casing base (9) outside for the device removes and carries.
The utility model provides an online sampling device of alkene liquid, wherein, preferred, still include level gauge (13), set up in the side of sample jar body (5) for show jar internal liquid quantity.
The utility model provides an online sampling device of alkene liquid, wherein, preferred, still include heat preservation (14), set up in the medial surface that protection casing base (9) and antiskid cover cap (10) for keep device constancy of temperature.
The utility model provides an online sampling device of alkene liquid, wherein, preferably, sample jar body (5) is detachable.
The utility model provides an online sampling device of alkene liquid, wherein, preferably, swing joint is threaded connection.
According to some embodiments, the present invention may also be stated as follows:
the utility model provides an online sampling device of alkene liquid, including sampling main line (1), nitrogen gas sweep pipeline (2), sample pipeline (3), blow-down pipeline (4), sample jar body (5), tank bottoms discharge line (6), sample jar fixer (7), protection casing base (9), antiskid cover cap (10), combustible gas alarm (11).
The sampling main pipeline (1) is positioned at the top of the sampling tank body (5) and is connected with the tank body through a four-way valve, and the other three pipelines are a nitrogen purging pipeline (2), a sampling pipeline (3) and a venting pipeline (4) respectively; the tank bottom discharge pipeline (6) is positioned at the bottom of the sampling tank body (5); all the tail ends of the pipelines are provided with valves; the pressure gauge (8) is positioned at the top of the sampling tank body (5); the sampling tank fixer (7) is positioned on the inner side of the protective cover base (9) and plays a role in fixing the sampling tank body (5); the upper cap (10) of the antiskid cover is movably connected with the base (9) of the protective cover.
In the olefin liquid online sampling device, the sampling tank body (5) is preferably detachable, so that sampling, reading and discharging are facilitated.
In the olefin liquid online sampling device, preferably, the combustible gas alarm (11) is arranged on the upper cap (10) of the anti-slip cover and used for detecting whether the olefin liquid leaks or not.
In the olefin liquid online sampling device, preferably, the combustible gas alarm (11) is positioned on the inner side of the upper cap (10) of the anti-slip cover and is used for detecting whether the sample leaks or not after sampling is finished.
In the olefin liquid online sampling device, a handle (12) is preferably arranged outside a protective cover base (9) so as to be convenient for moving and carrying the device.
In the olefin liquid online sampling device, preferably, the movable connection between the upper cap (10) of the anti-slip cover and the base (9) of the protective cover is preferably in threaded connection.
In the olefin liquid online sampling device, preferably, the liquid level meter (13) is positioned at one side of the sampling tank body (5) and used for displaying the quantity of liquid in the tank body, the number of the liquid level meter (13) needs to be observed during sampling, and the sampling is stopped after the volume reaches a required value.
In the olefin liquid online sampling device, preferably, the heat-insulating layer (14) is positioned outside the protective cover base (9) and the anti-slip cover upper cap (10) and used for keeping the temperature of the device constant.
In the olefin liquid on-line sampling device, preferably, all valves on the olefin liquid sampling device are in a closed state before sampling.
The utility model provides an online sampling device of alkene liquid can be used to the online isolated air of alkene liquid to take a sample, and its advantage lies in guaranteeing to go on under airtight condition in whole sample process, and fundamentally guarantees that sample in-process sample does not take place to leak, both can avoid sample and external contact, guarantees the purity and the accuracy of sample, reducible environmental pollution again, protects operating personnel's personal safety effectively. Meanwhile, the structure is simple, and the processing cost is low. The utility model provides an online sampler can realize portablely, and the sample that takes is representative, and repeatability is strong.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of an olefin liquid online sampling device according to an embodiment of the present invention. Wherein the reference numerals are as follows:
sampling main line 1
Nitrogen purge line 2
Tank bottom discharge line 6
Protective cover base 9
Antiskid hood upper cap 10
Insulating layer 14
Detailed Description
As shown in figure 1, the on-line olefin liquid sampling device comprises a sampling main pipeline and a valve (1), a nitrogen purging pipeline and a valve (2), a sampling pipeline and a valve (3), a emptying pipeline and a valve (4), a sampling tank body (5), a tank bottom discharge pipeline and a valve (6), a sampling tank fixer (7), a pressure gauge (8), a protective cover base (9), an anti-slip cover upper cap (10), a combustible gas alarm (11), a handle (12), a liquid level meter (13) and a heat preservation layer (14).
The working process of the utility model is as follows:
before use, the protective cover base (9) is disconnected with the anti-skid cover upper cap (10); all valves on the olefin liquid sampling apparatus were closed. Before sampling, an olefin liquid sampling device is connected to the olefin line via a sampling line (3). Opening a valve at the nitrogen purging pipeline (2) to allow nitrogen to enter, opening a venting pipeline (4) to perform pressure replacement for 5 times, and closing all valves; opening a valve of a nitrogen purging pipeline (2) to allow nitrogen to enter, opening a flow of a sampling main pipeline (1), a venting pipeline and a valve (4), introducing nitrogen to perform pressure replacement operation of the sampling device, repeating the operation for 10 times, and closing all the valves; opening all the flows of the sampling main pipeline (1) and the sampling pipeline (3), starting olefin liquid sampling, slowly pumping a piston injector (6) during sampling, observing the reading of a liquid level meter (13), and stopping sampling after the liquid level reaches a required value; closing all valves after sampling; opening a valve at the nitrogen purging pipeline (2) to allow nitrogen to enter, opening the process of the emptying pipeline (4) to perform nitrogen purging and replacement for 5 times, and closing all valves; disconnecting the olefin liquid sampling device from the olefin line; the protective cover base (9) is connected with the antiskid cover upper cap (10).
Claims (7)
1. An olefin liquid online sampling device, comprising:
the sampling tank body (5) is fixed in a protective cover base (9) through a sampling tank fixer (7), and an anti-skid cover upper cap (10) is movably connected above the protective cover base (9); a discharge pipeline (6) is arranged at the bottom of the sampling tank body (5), and a pressure gauge (8) is arranged at the top of the sampling tank body (5);
one end of the main pipeline (1) is connected to the top of the tank body (5), and the other end of the main pipeline is respectively connected with the nitrogen purging pipeline (2), the sampling pipeline (3) and the emptying pipeline (4) through the four-way valve;
wherein, the tail ends of the nitrogen purging pipeline (2), the sampling pipeline (3), the emptying pipeline (4) and the discharging pipeline (6) are all provided with valves.
2. The on-line olefin liquid sampling device according to claim 1, further comprising a combustible gas alarm (11) disposed on the inner surface of the cap (10) on the anti-slip cover.
3. The on-line olefin liquid sampling device according to claim 1, further comprising a handle (12) disposed on an outer surface of the shield base (9).
4. The on-line olefin liquid sampling device according to claim 1, further comprising a liquid level meter (13) disposed on a side surface of the sampling tank body (5).
5. The on-line olefin liquid sampling device according to claim 1, further comprising an insulating layer (14) arranged on the inner side surfaces of the protective cover base (9) and the anti-skid cover upper cap (10).
6. The olefin liquid online sampling device according to claim 1, wherein the sampling tank body (5) is detachable.
7. The in-line olefin liquid sampling device of claim 1, wherein the movable connection is a threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921696520.5U CN211425960U (en) | 2019-10-11 | 2019-10-11 | Online sampling device of alkene liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921696520.5U CN211425960U (en) | 2019-10-11 | 2019-10-11 | Online sampling device of alkene liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211425960U true CN211425960U (en) | 2020-09-04 |
Family
ID=72254039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921696520.5U Active CN211425960U (en) | 2019-10-11 | 2019-10-11 | Online sampling device of alkene liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211425960U (en) |
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2019
- 2019-10-11 CN CN201921696520.5U patent/CN211425960U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211229 Address after: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee after: PetroChina Company Limited Patentee after: Sinopec Research Institute of Petrochemical Co.,Ltd. Address before: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee before: PetroChina Company Limited |
|
| TR01 | Transfer of patent right |