A kind of lng long-distance conveying device and conveying method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A long-distance transportation and long-distance transportation technology, applied in the method of container discharge, fluid transfer, equipment discharged from pressure vessels, etc., can solve the impact of pipeline transportation and safe operation, gas slug flow, increase in resistance along the way, etc. question
Active Publication Date: 2021-03-05
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0005] The purpose of the present invention is to provide a long-distance LNG transportation device and its transportation method, to solve the problem that in the prior art, LNG is saturated liquid natural gas when it enters the pipeline, and the temperature rise along the long-distance pipeline will easily cause part of the LNG to gasify. Two-phase flow is formed in the pipeline. The two-phase flow not only greatly increases the resistance along the way, but also may generate gas slug flow, which seriously affects the transportation and safe operation of the pipeline.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0026] Such as figure 1 and figure 2 As shown in the figure, the LNG (liquefied natural gas) long-distance transportation device is schematically shown to include an LNG liquid storage tank 1, a high-pressure pump 2, a gasifier 3, a multi-pipeline long-distance transmission casing 4, a gas-liquid separator 5 and Cold pump station6.
[0027]In the embodiment of the present application, the LNG liquid storage tank 1 is used to store LNG, and a submersible pump 11 capable of pressurizing the LNG into low-pressure LNG is provided inside the LNG liquid storage tank 1 . Wherein, the LNG liquid storage tank 1 is used to receive liquefied natural gas transported by ships or LNG tankers.
[0028] The high-pressure pump 2 communicates with the LNG storage tank 1 through a first pipeline, and is used to pressurize the low-pressure LNG into high-pressure LNG.
[0029] The first inlet of the gasifier 3 communicates with the first outlet of the high pressure pump 2 .
[0030] Multi-pip...
Embodiment 2
[0047] This embodiment is basically the same as Embodiment 1. For the sake of brevity, in the description process of this embodiment, the same technical features as Embodiment 1 will not be described, and only the differences between this embodiment and Embodiment 1 will be described:
[0048] Such as image 3 As shown, according to the second aspect of the present application, a method for LNG long-distance transportation is also provided, including:
[0049] Step S1, pressurizing the liquefied natural gas into high-pressure liquefied natural gas. Specifically, the low-temperature liquefied natural gas is first pressurized into low-pressure liquefied natural gas by the submersible pump 2 , and then the low-pressure liquefied natural gas is pressurized by the high-pressure pump 2 to high-pressure liquefied natural gas for export.
[0050] Step S2, dividing the first part of the high-pressure LNG into n streams, and throttling the n-1 LNG streams respectively to obtain LNG exp...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention relates to the technical field of LNG long-distance transportation technology, and discloses a long-distance LNG transportation device and a transportation method thereof, including an LNG liquid storage tank, and a submersible pump is arranged inside the LNG liquid storage tank; the high-pressure pump passes through the first A pipeline communicates with the LNG liquid storage tank; the first inlet of the vaporizer communicates with the first outlet of the high-pressure pump; the multi-pipeline long-distance pipeline, the gas-liquid separator and the cooling pump station, the multi-pipeline long-distance The first inlet of the casing communicates with the first outlet of the gasifier through the second pipeline, the second outlet of the multi-pipe long-distance casing communicates with the cold pump station, and the second inlet of the multi-pipe long-distance casing It communicates with the second outlet of the high-pressure pump, the second outlet of the multi-pipeline long-distance casing communicates with the inlet of the gas-liquid separator, and the inlet of the gas-liquid separator communicates with the cold pump station. The LNG long-distance transport device has the advantages of high transport efficiency and improved cold energy utilization rate of liquefied natural gas.
Description
technical field [0001] The invention relates to the technical field of LNG long-distance transportation technology, in particular to an LNG long-distance transportation device and a transportation method thereof. Background technique [0002] A large amount of LNG (liquefied natural gas) transportation adopts liquid transportation to be more economical than gas transportation, and the transportation volume can be increased by 3.5 to 3.7 times, and the investment can be saved by 2 to 4 times. When LNG enters the pipeline, it is saturated liquid natural gas. The temperature rise of the pipeline can easily cause part of the LNG to gasify, forming a two-phase flow in the pipeline. The two-phase flow not only greatly increases the resistance along the way, but also may cause gas slug flow, which seriously affects the transportation and safe operation of the pipeline. . [0003] Therefore, for cryogenic liquid transportation pipelines, especially long-distance pipelines, special ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more