Check patentability & draft patents in minutes with Patsnap Eureka AI!

Liquefied natural gas vapor recovering device

A technology of liquefied natural gas and recovery device, which is applied in the directions of liquefaction, refrigeration and liquefaction, household refrigeration devices, etc., can solve the problems of not conforming to the liquefied natural gas supply station, the working temperature area of ​​the refrigerator is difficult to reach, and the equipment cost is high. The effect of small investment and convenient operation

Inactive Publication Date: 2006-06-07
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the liquefaction temperature of natural gas is below -162°C, it is difficult to reach the working temperature range of ordinary refrigerators, and the cost of deep refrigeration equipment is high and the efficiency is low, which does not meet the needs of small and medium-sized liquefied natural gas supply stations

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
  • Liquefied natural gas vapor recovering device
  • Liquefied natural gas vapor recovering device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Make a cold storage type liquefied natural gas vapor recovery device. As shown in Figure 1, the device includes: a heat insulating top cover 1, a heat insulating shell 2, a partition 3, a natural gas heat exchanger 5, a liquid nitrogen spray pipe 7, a nitrogen gas bubbling pipe 6, and a cold equipment heat exchanger 11 , cold storage medium 12, pressure-sensitive switch valve 16; wherein, the partition plate 3 is fixed in the middle of the heat insulating shell 2, the inlet pipe 5 of the natural gas heat exchanger is fixed on the heat insulating top cover 1, and the outlet pipe 10 of the natural gas heat exchanger Fixed on the insulation shell 2 above the partition 3, the capillary net 9 is covered in multiple layers on the surface of the natural gas heat exchanger 8, the lower part hangs on the partition 3, and the liquid nitrogen spray pipe 7 is fixed on the heat insulation top cover 1 On, near the natural gas heat exchanger 8 directly above, the nitrogen gas bubbling...

Embodiment 2

[0020] Utilize the device of embodiment 1 to recover liquefied natural gas, concrete steps are as follows:

[0021] (1) The natural gas vapor caused by the evaporation rate of the liquefied natural gas storage tank is introduced into the natural gas heat exchanger 8 through the inlet pipe 5 of the natural gas heat exchanger;

[0022] (2) Open the liquid nitrogen control valve 17, the liquid nitrogen spray pipe 7 sprays the liquid nitrogen onto the capillary net 9 on the surface of the natural gas heat exchanger 8, the liquid nitrogen evaporates and absorbs heat, condenses the natural gas into liquid natural gas, and the liquid natural gas passes through The outlet pipe 10 of the natural gas heat exchange tube outputs;

[0023] (3) When the nitrogen pressure in the spray chamber exceeds the set value of 0.8 MPa, the pressure-sensitive switch valve 16 is opened, and the nitrogen gas bubbling tube 6 passes nitrogen gas into the cold storage medium 12 at the lower part, and the re...

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

No PUM Login to View More

Abstract

The invention relates to a cold storage type liquefied natural gas vapor recovery device. The device includes a box body sealed with a heat-insulating top cover and a heat-insulation shell, and a horizontal partition that is sealed with the inner wall of the box is arranged inside. A liquid nitrogen spray pipe with a spout connected to the liquid nitrogen storage tank outside the box is arranged above the natural gas heat exchanger; a liquid nitrogen spray pipe connected to the outside of the box is placed in the box filled with cold storage medium under the transverse partition The cold equipment heat exchanger for cold equipment is equipped with a nitrogen bubbling tube that penetrates the transverse partition. At the same time as the steam of natural gas, the residual cold is stored. Moreover, the device uses conventional low-temperature containers and other equipment, with small investment, simple structure, convenient operation, and high economic benefits. It is suitable for small and medium-sized liquefied natural gas supply stations.

Description

technical field [0001] The invention relates to a vapor recovery device for liquefied natural gas, in particular to a cold storage type liquefied natural gas vapor recovery device. Background technique [0002] At present, the common liquefied natural gas vapor recovery device uses a refrigerator to condense the natural gas vapor. Since the liquefaction temperature of natural gas is below -162°C, it is difficult to reach the working temperature range of ordinary refrigerators, and the cost of deep refrigeration equipment is high and the efficiency is low, which does not meet the needs of small and medium-sized liquefied natural gas supply stations. Contents of the invention [0003] The purpose of the present invention is to overcome the high cost of the existing liquefied natural gas vapor recovery device, which does not meet the needs of small and medium-sized liquefied natural gas supply stations, so as to provide a cold storage type liquefied natural gas vapor recovery...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F25J1/02C10L3/06F25D3/10
Inventor 杨健慧李强李青梁惊涛卢文强
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com