Reaction method with homogeneous-phase supercritical fluid

Patent metadata

Field	Value
Publication number	US-10702845-B2
Application number	US-201816128802-A
Country	US
Kind code	B2
Filing date	Sep 12, 2018
Priority date	May 26, 2016
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A reaction method with a homogeneous-phase supercritical fluid includes introducing a first fluid into a mixing chamber. A mass is less than or equal to that can be absorbed by the molecular sieve component, totally absorbing the first fluid by the molecular sieve component. A second fluid is introduced into the mixing chamber with a mass being greater than that can be absorbed by the molecular sieve component. A temperature and a pressure in the mixing chamber are adjusted to a critical temperature and a critical pressure of the second fluid, respectively, releasing the first fluid in supercritical phase from the molecular sieve component into the mixing chamber, followed by homogeneously mixing with the second fluid in supercritical phase in the mixing chamber to obtain a homogeneous-phase mixing fluid. The homogeneous-phase mixing fluid is then introduced into a reaction chamber connected to the mixing chamber.

First claim

What is claimed is:

1. A reaction method with a homogeneous-phase supercritical fluid, comprising:
introducing a first fluid into a mixing chamber containing a molecular sieve component, wherein a mass of the first fluid into the mixing chamber is less than or equal to that can be absorbed by the molecular sieve component, totally absorbing the first fluid by the molecular sieve component;
introducing a second fluid into the mixing chamber, wherein a mass of the second fluid into the mixing chamber is greater than that can be absorbed by the molecular sieve component;
adjusting a temperature and a pressure in the mixing chamber to a critical temperature and a critical pressure of the second fluid, respectively, releasing the first fluid in supercritical phase from the molecular sieve component into the mixing chamber, followed by homogeneously mixing with the second fluid in supercritical phase in the mixing chamber to obtain a homogeneous-phase mixing fluid; and
introducing the homogeneous-phase mixing fluid into a reaction chamber connected to the mixing chamber for conducting a reaction.

2. The reaction method with the homogeneous-phase supercritical fluid as claimed in claim 1 , wherein the first fluid and the second fluid are a fluid in liquid phase and a fluid in gas phase, respectively.

3. The reaction method with the homogeneous-phase supercritical fluid as claimed in claim 2 , wherein the first fluid is the fluid in liquid phase selected from water, ethanol, acetone, oxalic acid, ammonia or sulfuric acid.

4. The reaction method with the homogeneous-phase supercritical fluid as claimed in claim 2 , wherein the second fluid is the fluid in gas phase selected from carbon dioxide, methane, ethane, propane, ethylene or propylene.

5. The reaction method with the homogeneous-phase supercritical fluid as claimed in claim 1 , wherein the molecular sieve component comprises an A-type or X-type molecular sieve.

6. The reaction method with the homogeneous-phase supercritical fluid as claimed in claim 1 , wherein the molecular sieve component comprises molecular sieve material made of aluminum oxide, silicon oxide and stainless steel sintered together.

Assignees

• National Sun Yat Sen University

Inventors

• Chang Ting-Chang
• Lin Chih-Yang
• Tsai Tsung-Ming
• Shih Chih-Cheng
• Wang Ming-Hui

Classifications

• B01J3/008 Primary

  Processes carried out under supercritical conditions · CPC title

• B01F23/09

  Mixing systems, i.e. flow charts or diagrams for components having more than two different of undetermined agglomeration states, e.g. supercritical states · CPC title

• B01F23/043

  Mixing fluids or with fluids in a supercritical state, in supercritical conditions or variable density fluids · CPC title

• Y02P20/54

  using solvents, e.g. supercritical solvents or ionic liquids · CPC title

• B01J2219/00051

  Controlling the temperature · CPC title