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

A method for separating mixed gas by hydrate method

A technology for mixing gas and hydrate solids, which is applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., and can solve the problems of low energy consumption for separation, high energy consumption for gas hydrate separation, and difficulty in heat transfer and flow in large-scale installations. problems, to achieve the effect of large separation capacity, avoid poor contact heat transfer effect, and save energy consumption for transportation

Active Publication Date: 2016-02-03
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for separating mixed gas by hydrate method with simple separation process and equipment, low separation energy consumption and easy industrial scale-up, which solves the problems of high energy consumption for gas hydrate separation and difficulties in heat transfer and flow of large-scale equipment problem

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
  • A method for separating mixed gas by hydrate method
  • A method for separating mixed gas by hydrate method
  • A method for separating mixed gas by hydrate method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: The hydrate method for separating mixed gases, the principle of internal heat and mass coupling technology in the separation process

[0038] like figure 1 As shown, taking A+B mixed gas as an example to illustrate the phase change of hydrates in the separation process of the present invention and the coupling of hydrate formation, decomposition heat, and accelerator concentration, A is the component that is easy to form hydrates, and B is difficult to form hydrates components of things. When the hydrate reaction stage begins, the reactor is a solid-liquid mixed slurry composed of pure accelerator hydrate solid and aqueous solution containing the accelerator, and the ratio of the accelerator dose entering the pure accelerator hydrate solid to the accelerator dose dissolved in the slurry can be It is determined by controlling the solid concentration of the pure accelerator hydrate generated in the solution; when the A+B mixed gas is injected into the reactor ...

Embodiment 2

[0039] Embodiment 2: Separation of raw gas CO 2 +H 2

[0040] like figure 2 As shown, the system for separating mixed gases consists of two identical reactors 1301 and 1302 connected in parallel. During normal operation, one is used as a hydration reactor and the other is used as a gas analyzer, and the two are switched to ensure that Continuity of separation process. Feed gas is CO 2 +H 2 Mixed gas (mole percentage is 40mol% CO 2 and 60mol% H 2 ), the accelerator aqueous solution that adopts is the tetrabutylammonium bromide (TBAB) aqueous solution that mass percentage content is 21.5wt%. Before the separation begins, inject a certain amount of 21.5wt% TBAB solution into reactors 1301 and 1302 respectively by shut-off valves 1201 and 1202, open the cooling water inlet and outlet valves of reactor cooling jacket 6, and cool the TBAB solution in the reactor. To below 280.5K, pure TBAB hydrate solids are generated, and the mass concentration of TBAB hydrate solids in th...

Embodiment 3

[0044] Embodiment 3: Separation of raw gas CO 2 +H 2

[0045] like figure 2 As shown, the system for separating mixed gases consists of two identical reactors 1301 and 1302 connected in parallel. During normal operation, one is used as a hydration reactor and the other is used as a gas analyzer, and the two are switched to ensure that Continuity of separation process. Feed gas is CO 2 +H 2 Mixed gas (mole percentage is 40mol%CO 2 and 60mol% H 2 ), the accelerator aqueous solution that adopts is the tetrabutylammonium bromide (TBAB) aqueous solution that mass percentage content is 20wt%. Before the separation begins, inject a certain amount of 20wt% TBAB solution into reactors 1301 and 1302 respectively by shut-off valves 1201 and 1202, open the cooling water inlet and outlet valves of reactor cooling jacket 6, and cool the TBAB solution in the reactor to Below 280K, pure TBAB hydrate solids are generated, and the mass concentration of TBAB hydrate solids in the slurry...

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

A method for separating mixed gas by a hydrate process. Gas hydration reaction and gas dissociation are sequentially and alternately carried out in the same reactor, so that the formation heat and decomposition heat of a hydrate are coupled and utilized. The method comprises the following steps: a, preparation of a slurry separation system; b, gas hydration reaction; c, gas dissociation; d, after the gas dissociation ends, the concentration of a promoter, and the content, pressure and temperature of a pure promoter hydrate solid in the slurry of the reactor are restored to the state at the end of step a; and repeating steps b and c to complete separation of a mixed gas hydrate in the next cycle.

Description

Technical field: [0001] The invention relates to the technical field of mixed gas separation, in particular to a method for separating mixed gas by hydrate method. Background technique: [0002] At present, the mixed gas separation technology is a very common chemical unit process in modern industrial production, and is widely used in various fields of production and life. Commonly used gas separation methods include cryogenic distillation, chemical absorption (adsorption), physical adsorption (absorption), membrane separation, etc. Each has advantages and disadvantages. [0003] Gas hydrate separation technology is a new type of gas separation technology developed in the past ten years. It is mainly based on the fact that the temperature and pressure conditions for the formation of hydrates by different guest molecules are very different. By controlling the temperature and pressure conditions during the hydrate formation process, the The guest components that easily form ...

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): B01D53/74
CPCB01D53/14B01D53/82
Inventor 陈朝阳李小森夏志明徐纯刚张郁吕秋楠颜克凤
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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