Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for recovering tail gas and preparing liquefied natural gas

A technology for recovery of liquefied natural gas and tail gas, which is applied in refrigeration and liquefaction, liquefaction, lighting and heating equipment, etc., to achieve the effect of improving energy saving measures, reducing resource consumption, and improving comprehensive energy utilization

Inactive Publication Date: 2014-07-23
GUIZHOU XINGHUA CHEM
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there is no good recovery treatment for the membrane hydrogen extraction tail gas, especially for the methane recovery operation in the membrane hydrogen extraction tail gas.

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
  • Method for recovering tail gas and preparing liquefied natural gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0017] The invention provides a method for preparing liquefied natural gas by recovering tail gas, which includes raw material gas purification operation, refrigeration compression operation, liquefaction operation, LNG storage operation, and release operation; wherein,

[0018] Raw material gas purification operation is used to purify the raw material gas and transport the purified gas to the liquefaction unit for liquefaction operation;

[0019] Refrigeration and compression operation, which is used to carry out pressurization and cooling operation of nitrogen, and transport the low-temperature gas after expansion and r...

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 discloses a method for recovering tail gas and preparing liquefied natural gas. The method includes the steps of raw material gas purification, refrigeration and compression, liquidation, LNG storage and diffusion. In the raw material gas purification step, raw material gas is purified, and the purified gas is transmitted to a liquidation unit to be liquefied. In the refrigeration and compression step, nitrogen is pressurized and cooled, and low-temperature gas where expansion refrigeration is conducted is transmitted to the liquidation unit. In the liquidation step, the purified raw material gas and the compressed low-temperature gas are received. The raw material gas is controlled to be separated after being cooled through the low-temperature gas, and LNG obtained through separation is conveyed to be stored. By means of the method for recovering tail gas and preparing liquefied natural gas, energy conservation measures of an enterprise can be effectively improved, resource consumption of the enterprise is reduced, and energy comprehensive utilization of the enterprise is improved.

Description

technical field [0001] The invention relates to the technical field of recovery of liquefied natural gas and methane, in particular to a method for recovering tail gas and preparing liquefied natural gas. Background technique [0002] At present, with the continuous improvement of people's material living standards, the use of energy is also different from previous years. Therefore, many regions are now vigorously advocating energy conservation and consumption reduction, reducing energy loss, and increasing energy utilization efficiency. It can better benefit the future generations of mankind, and it also actively responds to the country's guiding ideology on sustainable development. Atmospheric methane concentrations have more than doubled over the years, mainly due to human activity, surveys show. Methane is 23 times more capable of preventing heat from escaping from the atmosphere than carbon dioxide. Therefore, reducing methane emissions and recovering methane in time i...

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 Applications(China)
IPC IPC(8): F25J3/02
Inventor 翟道兵田维略陈继峰刘宽勇余贵连王新娟
Owner GUIZHOU XINGHUA CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com