CN215262568U - Sampling device for recycle hydrogen desulfurization system - Google Patents
Sampling device for recycle hydrogen desulfurization system Download PDFInfo
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- CN215262568U CN215262568U CN202120678420.0U CN202120678420U CN215262568U CN 215262568 U CN215262568 U CN 215262568U CN 202120678420 U CN202120678420 U CN 202120678420U CN 215262568 U CN215262568 U CN 215262568U
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Abstract
The utility model discloses a sampling device for circulating hydrogen desulfurization system, circulating hydrogen desulfurization system include the desulfurizing tower and with the circulating hydrogen compressor entry buffer tank of desulfurizing tower intercommunication, its characterized in that, sampling device includes: the angle valve is provided with a pressure reducing structure, and one end of the angle valve is communicated with the inlet buffer tank of the recycle hydrogen compressor; the sampling assembly comprises an inlet pipe, a valve and an outlet pipe, the valve is arranged between the inlet pipe and the outlet pipe, and the inlet pipe is communicated with the other end of the angle valve; the advantage is that the angle valve decompresses the pressure that is greater than 14mpa on the pipeline to within 5kpa, under low pressure state, opens the valve and uses the special gasbag of sample to take a sample, and not only safety but also operation are swift, and sampling device simple structure is with low costs, and sample data obtains accurately under safe low pressure state.
Description
Technical Field
The utility model belongs to the technical field of petrochemical equipment technique and specifically relates to a sampling device for circulating hydrogen desulfurization system is related to.
Background
With the upgrading of the quality of petroleum products and the deterioration of raw oil, the existing gasoline and diesel hydrogenation, including the desulfurization of recycle hydrogen in devices such as high-pressure hydrocracking, high-pressure wax oil hydroisomerization and the like, adopts an amine liquid chemical desulfurization method, and uses a diethanolamine solution to react with hydrogen sulfide in the recycle hydrogen to adsorb and remove H2S in the recycle hydrogen, thereby improving the purity of the recycle hydrogen. And (4) pumping the lean amine liquid to a desulfurizing tower by using a high-pressure multistage pump to reversely contact with circulating hydrogen, and fully absorbing and reacting. At present, a decarburization desulfurization device usually adopts an amine desulfurization (MDEA wet desulfurization) process, in order to ensure the best desulfurization effect of recycle hydrogen and the purity of recycle hydrogen, two high-pressure sampling devices are respectively arranged before and after a desulfurization step enters a desulfurization tower, and the recycle hydrogen is adjusted and monitored to have stable pressure by analyzing sampling data.
The setting is on the pipeline that the sampling device after the desulfurizing tower is greater than 14MPA at pressure, and the personnel of taking a sample need once every 12 hours, because permanent frequent sample leads to on the sampling device high pressure to change low pressure part and appear leaking many times, scurry and press, has higher safety risk, and the sampling device structure is complicated simultaneously, causes the leakproofness problem to make sample data inaccurate because of sampling device's leakage with scurry pressure, and this technical problem is urgent to be solved for this reason.
Disclosure of Invention
The utility model discloses a main aim at provides a sampling device for circulating hydrogen desulfurization system to sample safety risk, the unsafe problem of sample data among the solution prior art.
In order to achieve the above object, the utility model provides a sampling device for circulating hydrogen desulfurization system, circulating hydrogen desulfurization system include the desulfurizing tower and with the circulating hydrogen compressor entry buffer tank of desulfurizing tower intercommunication, sampling device includes: the angle valve is provided with a pressure reducing structure, and one end of the angle valve is communicated with the inlet buffer tank of the recycle hydrogen compressor; the sampling assembly comprises an inlet pipe, a valve and an outlet pipe, the valve is arranged between the inlet pipe and the outlet pipe, and the inlet pipe is communicated with the other end of the angle valve.
Further, the valve is fixedly connected with the inlet pipe through threads, and the valve is fixedly connected with the outlet pipe through a clamping sleeve. So set up, very conveniently with the valve with import pipe and the installation of outlet pipe fixed.
Further, the valve is a needle valve. The needle valve can accurately adjust and cut off gas in the pipeline, so that gas leakage is avoided during sampling, and sampled data are accurate. The valve core of the valve has a very pointed cone.
Further, the inlet pipe and the outlet pipe are made of carbon steel materials. The carbon steel material is adopted, so that the hardness of the inlet pipe and the outlet pipe is ensured, and the service life is prolonged.
Further, one end of the outlet pipe is provided as an inclined surface. One end of the outlet pipe is a sampling end, and the outlet pipe is arranged to be an inclined plane, so that sampling is convenient.
Further, one end of the inlet pipe is provided with a reinforcing pipe, and the inner diameter of the reinforcing pipe is larger than that of the inlet pipe. A reinforcing tube is provided to increase the strength of the inlet tube.
Compared with the prior art, the utility model has the advantages of set up the angle valve of decompression structure, the angle valve decompresses the pressure that is greater than 14mpa on the pipeline to within 5kpa, under low pressure state, opens the valve and uses the special gasbag of sample to take a sample, and not only safe but also the operation is swift, and sampling device simple structure is with low costs, and sample data obtains accurately under safe low pressure state.
Drawings
The accompanying drawings, which form a part of the present application, 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 and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a recycle hydrogen desulfurization system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sampling assembly of a sampling device according to an embodiment of the present invention;
wherein the drawings include the following reference numerals:
the system comprises a desulfurizing tower 1, a recycle hydrogen compressor inlet buffer tank 2, a sampling device 3, an angle valve 31, a sampling assembly 32, an inlet pipe 321, a valve 322, an outlet pipe 323, a reinforced pipe 324, an amine liquid absorption tower feeding buffer tank 4 and a cold high-pressure separator 5.
Detailed Description
The embodiment of the application solves the problems of sampling safety risk and inaccurate sampling data in the prior art by providing the sampling device for the recycle hydrogen desulfurization system.
In order to solve the problems of the sampling safety risk and inaccurate sampling data, the technical scheme in the embodiment of the application has the following general idea:
set up the angle valve of decompression structure, the angle valve with be greater than 14mpa on the pipeline pressure decompression to within 5kpa, under low pressure state, open the valve and use the special gasbag of sample to take a sample, not only safe but also the operation is swift, sampling device simple structure, it is with low costs, sample data under safe low pressure state obtains accurately.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-2, a sampling device for a recycle hydrogen desulfurization system including a desulfurization tower 1 and a recycle hydrogen compressor inlet buffer tank 2 communicating with the desulfurization tower 1, the sampling device 3 includes: an angle valve 31 with a pressure reducing structure, wherein one end of the angle valve 31 is communicated with the inlet buffer tank 2 of the recycle hydrogen compressor; a sampling assembly 32, wherein the sampling assembly 32 comprises an inlet pipe 321, a valve 322 and an outlet pipe 323, the valve 322 is arranged between the inlet pipe 321 and the outlet pipe 323, and the inlet pipe 321 is communicated with the other end of the angle valve 31.
In specific implementation, the valve 322 is fixedly connected with the inlet pipe 321 through a thread, and the valve 322 is fixedly connected with the outlet pipe 323 through a ferrule.
Preferably, the valve 322 is a needle valve.
Preferably, the inlet pipe 321 and the outlet pipe 323 are made of carbon steel.
In a specific implementation, one end of the outlet pipe 323 is arranged as an inclined plane.
In specific implementation, a reinforcing pipe 324 is arranged at one end of the inlet pipe 321, and the inner diameter of the reinforcing pipe 324 is larger than that of the inlet pipe 321.
The working process of the recycle hydrogen desulfurization system is as follows: circulating hydrogen and light oil mixed substances from a reaction system are separated through a cold high-pressure separator 5, the circulating hydrogen reaches a high-pressure amine liquid tower feeding buffer tank 4 from the top of the cold high-pressure separator 5, then enters a high-pressure amine liquid absorption tower 1 from the high-pressure amine liquid tower feeding buffer tank 4, hydrogen sulfide is removed in the high-pressure amine liquid absorption tower 1, the circulating hydrogen after the hydrogen sulfide is removed flows into a circulating hydrogen compressor inlet buffer tank 2 from the top of the high-pressure amine liquid absorption tower 1, two paths of flows are separated from the top of the circulating hydrogen compressor inlet buffer tank 2, one path is used for establishing circulation through a circulating hydrogen compressor and then removing the reaction system to take heat, the other path is used for reducing pressure through an angle valve 31 and discharging waste hydrogen, and a sampling assembly 32 is arranged behind the angle valve 31 and is used for sampling safely and accurately so as to ensure the hydrogen purity of the circulating hydrogen. 15 layers of floating valve trays are arranged in the high-pressure amine liquid absorption tower 1, amine liquid is sent from the top of the high-pressure amine liquid absorption tower 1 by a high-pressure amine liquid feeding pump, the amine liquid flows from top to bottom on the trays in the high-pressure amine liquid absorption tower 1, exchange of gas, liquid, energy and the like is realized on the trays, so that the desulphurization of recycle hydrogen is realized, and the amine liquid flowing to the tower kettle of the high-pressure amine liquid absorption tower 1 is recycled by an amine liquid regeneration system.
It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, praise replacement, improvement and the like within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A sampling device for a recycle hydrogen desulfurization system, the recycle hydrogen desulfurization system includes a desulfurizing tower and a recycle hydrogen compressor inlet buffer tank communicated with the desulfurizing tower, characterized in that, the sampling device includes:
the angle valve is provided with a pressure reducing structure, and one end of the angle valve is communicated with the inlet buffer tank of the recycle hydrogen compressor;
the sampling assembly comprises an inlet pipe, a valve and an outlet pipe, the valve is arranged between the inlet pipe and the outlet pipe, and the inlet pipe is communicated with the other end of the angle valve.
2. The sampling device for the recycle hydrogen desulfurization system according to claim 1, wherein the valve is fixedly connected with the inlet pipe through a thread, and the valve is fixedly connected with the outlet pipe through a ferrule.
3. The sampling device of claim 2, wherein the valve is a needle valve.
4. A sampling device for a recycle hydrogen desulfurization system in accordance with any one of claims 1 to 3, wherein said inlet pipe and said outlet pipe are made of carbon steel material.
5. The sampling device for the recycle hydrogen desulfurization system according to claim 4, wherein one end of the outlet pipe is provided with a slope.
6. The sampling device for the recycle hydrogen desulfurization system according to claim 4, wherein a reinforcing pipe is provided at one end of the inlet pipe, and an inner diameter of the reinforcing pipe is larger than an inner diameter of the inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120678420.0U CN215262568U (en) | 2021-04-02 | 2021-04-02 | Sampling device for recycle hydrogen desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120678420.0U CN215262568U (en) | 2021-04-02 | 2021-04-02 | Sampling device for recycle hydrogen desulfurization system |
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| Publication Number | Publication Date |
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| CN215262568U true CN215262568U (en) | 2021-12-21 |
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| CN202120678420.0U Active CN215262568U (en) | 2021-04-02 | 2021-04-02 | Sampling device for recycle hydrogen desulfurization system |
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2021
- 2021-04-02 CN CN202120678420.0U patent/CN215262568U/en active Active
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