CN213065531U - High-efficient liquid nitrogen storage and gasification system - Google Patents
High-efficient liquid nitrogen storage and gasification system Download PDFInfo
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- CN213065531U CN213065531U CN202021867134.0U CN202021867134U CN213065531U CN 213065531 U CN213065531 U CN 213065531U CN 202021867134 U CN202021867134 U CN 202021867134U CN 213065531 U CN213065531 U CN 213065531U
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Abstract
The utility model discloses a high-efficiency liquid nitrogen storage and gasification system, which comprises a liquid nitrogen storage tank, wherein the bottom of the liquid nitrogen storage tank 1 is provided with a liquid nitrogen inlet and outlet and a valve; the liquid nitrogen inlet and the liquid nitrogen outlet are communicated with a nitrogen balancing tank through a nitrogen conveying pipeline and are provided with valves; the nitrogen conveying pipeline is also connected with the MRC compressor isolation gas through a branch pipeline; the liquid nitrogen inlet and the liquid nitrogen outlet are communicated with one side of the liquid nitrogen storage tank through a circulating pipeline, and a liquid outlet is formed in the bottom of the liquid nitrogen inlet and the liquid nitrogen outlet; the utility model has the advantages that: simple structure, low cost and good use effect.
Description
Technical Field
The utility model relates to a liquid nitrogen equipment, specifically speaking are high-efficient liquid nitrogen storage and gasification system belongs to the liquid nitrogen equipment field.
Background
20m designed by LNG branch plant3Liquid nitrogen storage tank is equipped with 300m3The gasification amount of the vaporizer is less than the emergency use amount of the front working section, and the nitrogen amount produced by a nitrogen making machine equipped in an air compression station originally installed in coking design is not enough to maintain the replacement of an LNG pre-division system, so that a 50m vaporizer is installed3Liquid nitrogen storage tank and 1500m3The vaporizer ensures the emergency use of the front system, and the total flow of the high-pressure and low-pressure sealing gas of the MRC compressor is controlled at 150m3More than h, and the isolated gas quantity is controlled to be 100m3About/h, the original nitrogen amount is 20m when the nitrogen is added in the equipment of the previous working section3Liquid nitrogen storage tank is equipped with 300m3The vaporizer is not sufficient to vaporize a sufficient amount of nitrogen.
SUMMERY OF THE UTILITY MODEL
The utility model aims to design a high-efficient liquid nitrogen storage and gasification system, simple structure, with low costs, excellent in use effect.
The technical scheme of the utility model is that:
a high-efficiency liquid nitrogen storage and gasification system comprises a liquid nitrogen storage tank, wherein the bottom of the liquid nitrogen storage tank is provided with a liquid nitrogen inlet and a liquid nitrogen outlet and is provided with a valve;
the liquid nitrogen inlet and the liquid nitrogen outlet are communicated with a nitrogen balancing tank through a nitrogen conveying pipeline and are provided with valves;
the nitrogen conveying pipeline is also connected with the MRC compressor isolation gas through a branch pipeline, and has the functions of increasing two-way gas supply of the MRC compressor and arranging a valve to ensure that the MRC operates stably;
the liquid nitrogen inlet and outlet are communicated with one side of the liquid nitrogen storage tank through a circulating pipeline, the liquid nitrogen inlet and outlet have the functions of reducing the pressure in the tank through the gas inside the upper liquid inlet cooling equipment and the lower liquid inlet cooling equipment when unloading and loading the tank, preventing overpressure, and the liquid nitrogen storage tank is provided with a valve; the bottom is provided with a liquid outlet because the liquid is needed to be discharged from the bottommost part for use.
50m of the liquid nitrogen storage tank with storage capacity3Liquid nitrogen, vaporizer 1500m3The treatment amount is/h.
The utility model has the advantages that: simple structure, low cost and good use effect.
Increase by 50m3Liquid nitrogen storage tank and 1500m3After the vaporizer is used, the LNG branch plant is not enough in nitrogen supply quantity for many times due to unstable operation of the coking air compression station in the operation process, and the liquid nitrogen is rapidly switched to serve as an isolation gas source of the MRC compressor in the branch plant, so that the parking accidents are reduced.
The nitrogen replacement of the coke oven gas compressor unit of the LNG branch plant is rapidly finished for rush repair each time, the branch plant needs to switch the isolation gas of the MRC compressor into liquid nitrogen, and all the common nitrogen is used for replacing the coke oven gas compressor unit to improve the replacement speed and the maintenance time.
The present invention will be further explained with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of a high-efficiency liquid nitrogen storage and gasification system according to an embodiment of the present invention.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is not intended to limit the invention.
Example 1
As shown in fig. 1, the high-efficiency liquid nitrogen storage and gasification system comprises a liquid nitrogen storage tank, wherein a liquid nitrogen inlet and a liquid nitrogen outlet are formed in the bottom of the liquid nitrogen storage tank 1, and a valve is arranged on the liquid nitrogen inlet and the liquid nitrogen outlet;
the liquid nitrogen inlet and the liquid nitrogen outlet are communicated with the nitrogen balancing tank 2 through a nitrogen conveying pipeline and are provided with valves;
the nitrogen conveying pipeline is also connected with the MRC compressor isolation gas through a branch pipeline, and has the functions of increasing two-way gas supply of the MRC compressor and arranging a valve to ensure that the MRC operates stably;
the liquid nitrogen inlet and outlet are communicated with one side of the liquid nitrogen storage tank through a circulating pipeline, the liquid nitrogen inlet and outlet have the functions of reducing the pressure in the tank through the gas inside the upper liquid inlet cooling equipment and the lower liquid inlet cooling equipment when unloading and loading the tank, preventing overpressure, and the liquid nitrogen storage tank is provided with a valve; the bottom is provided with a liquid outlet because the liquid is needed to be discharged from the bottommost part for use.
50m of the liquid nitrogen storage tank with storage capacity3Liquid nitrogen, vaporizer 1500m3The treatment amount is/h.
Claims (2)
1. The utility model provides a high-efficient liquid nitrogen storage and gasification system which characterized in that: the device comprises a liquid nitrogen storage tank, wherein the bottom of the liquid nitrogen storage tank 1 is provided with a liquid nitrogen inlet and a liquid nitrogen outlet and is provided with a valve;
the liquid nitrogen inlet and the liquid nitrogen outlet are communicated with a nitrogen balancing tank through a nitrogen conveying pipeline and are provided with valves;
the nitrogen conveying pipeline is also connected with the MRC compressor isolation gas through a branch pipeline;
the liquid nitrogen inlet and outlet are communicated with one side of the liquid nitrogen storage tank through a circulating pipeline, and a liquid outlet is formed in the bottom of the liquid nitrogen inlet and outlet.
2. The high efficiency liquid nitrogen storage and gasification system of claim 1, wherein: 50m of the liquid nitrogen storage tank with storage capacity3Liquid nitrogen, vaporizer 1500m3The treatment amount is/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021867134.0U CN213065531U (en) | 2020-08-31 | 2020-08-31 | High-efficient liquid nitrogen storage and gasification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021867134.0U CN213065531U (en) | 2020-08-31 | 2020-08-31 | High-efficient liquid nitrogen storage and gasification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213065531U true CN213065531U (en) | 2021-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021867134.0U Active CN213065531U (en) | 2020-08-31 | 2020-08-31 | High-efficient liquid nitrogen storage and gasification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213065531U (en) |
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2020
- 2020-08-31 CN CN202021867134.0U patent/CN213065531U/en active Active
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