Method and device for extracting solute from gaseous solvents

A gas solvent and solute technology, applied in solvent extraction, liquid solution solvent extraction, separation methods, etc., can solve problems such as high cost, difficult removal of compressor lubricant, equipment corrosion, etc.

Inactive Publication Date: 2004-02-18
大卫·魏特洛克
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] 1. Unless the pressure is reduced to a very low level, there will be a significant amount of solute still in the dissolved state, and the low pressure will make the cost of reusing the solvent too high;
[0007] 2. The formation of...

Method used

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  • Method and device for extracting solute from gaseous solvents
  • Method and device for extracting solute from gaseous solvents
  • Method and device for extracting solute from gaseous solvents

Examples

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Embodiment Construction

[0079]The present invention provides a method complementary to pressure swing adsorption, in which the gas solution is purified by absorption in an adsorption bed, then the pressure and density are increased, and the adsorption bed is regenerated using flow in the opposite direction.

[0080] In the method of the present invention, at least one solute dissolved in the gas solvent is separated from the gas solvent under the condition that the chemical potential of the at least one solute dissolved in the gas solvent decreases as the density of the gas solvent increases come out. In operating the method, a solute-containing gas solvent is passed through an adsorption bed at a first density and in a first direction so that the solute is adsorbed by the adsorption bed, and then the gas solvent or a portion thereof is treated to increase its density To a level higher than the original density, at this time, the affinity of the gas solvent with the second density to the solute adsor...

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PUM

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Abstract

A process is described for the separation of solutes dissolved in a gaseous solvent. The process is useful in the extraction and recovery of solutes using supercritical fluid extraction, and in the purification of impure steam. The process utilizes a sorbent to remove solute followed by an in situ regeneration of the sorbent and the recovery of the solute.

Description

technical field [0001] The present invention relates to a method and apparatus for separating solutes dissolved in gaseous solvents. Furthermore, the present invention relates to the separation and recovery of one or more solutes dissolved in high-pressure gas, and the recovery of purified high-pressure gas. In the present invention, a gas solution refers to a solution in which the contained solvent has obvious compressibility, or the solution itself has obvious compressibility. Background technique [0002] At low pressure, a gas is a poor solvent, and the potential solubility of a potential solute is limited by its volatility. For example: the humidity content of air is limited by the vapor pressure of water at the dew point, ie the temperature at which the vapor pressure of water equals the partial pressure of water in the gas. At high pressures, gases have a pronounced solvent effect, even for non-volatile substances, for example, at temperatures where the vapor pressu...

Claims

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Application Information

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IPC IPC(8): B01D11/00B01D11/04B01D53/04
CPCB01D2253/112B01D2253/104B01D53/04B01D53/0446B01D2253/102B01D2259/4009B01D11/0407B01D2253/202B01D2253/108B01D2253/106B01D2259/40092
Inventor 大卫·魏特洛克
Owner 大卫·魏特洛克
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