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Improved solvent extraction and recovery

A solvent and extraction chamber technology, which is used in the field of solvent extraction of solutes from samples and solvent recovery, can solve the problems of shortening the working life of equipment, reducing operating performance, increasing energy costs, etc. Effect

Inactive Publication Date: 2010-06-23
ACCUDYNE SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This reduces operational performance, increases energy costs, and shortens the operating life of the equipment

Method used

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Embodiment Construction

[0032] Embodiments of the present invention provide systems and methods for improved tight gas extraction and recovery. In one aspect, the accumulation of solutes in certain parts of the system (eg, due to premature precipitation of solutes) is reduced, thereby extending the lifetime of said certain parts. The pressure of the solvent / solute mixture, normally at saturated conditions, obtained from the extraction chamber is increased to provide a mixture above saturated conditions. The pressure can be increased by a pump located between the extraction chamber and the evaporation chamber.

[0033] In addition, the systems and methods of the present invention isolate the process conditions of the separation process and the extraction process. Said isolation can be done by means of a pump located between the extraction chamber and the evaporation chamber. In this way, the process conditions for the separation process, such as temperature and pressure, can be maintained to provide...

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Abstract

Systems and methods for improving dense gas solvent extraction of a solute and recovery of the solvent are provided. A pressure of the solvent / solute mixture obtained from an extraction chamber is increased, e.g. With a pump, thereby providing the mixture above saturation conditions. The increased pressure provides greater solubility of the solute and less solvent being vaporized in a heat exchanger. A buildup of solute in the system is reduced, thus improving system longevity. Also, process conditions of the separation process are isolated from those of the extraction process. Accordingly, the process conditions for the separating process are maintained while the process conditions of the extraction chamber vary with ambient temperature, thus saving cost and energy. This isolation also provides an ability to use, in the gas recovery cycle, a heat pump that can be used for many applications and environmental conditions while still using a conventional refrigerant.

Description

[0001] priority claim [0002] This application claims the benefit of U.S. Provisional Application No. 61 / 017,108, filed December 27, 2007, entitled "IMPROVED SOLVENT EXTRACTION AND RECOVERY" (Attorney No. 026681-000100US), the full text of which The references are incorporated herein. technical field [0003] The present invention generally relates to the use of solvents to extract solutes from samples and recover solvents, and more specifically, provides a method for extracting and recovering solvents in a less expensive, more efficient, and more durable manner. Background technique [0004] Solvents are used in various industries to extract solutes (solid or liquid). Natural substances are usually extracted using liquid solvents at atmospheric pressure, such as oils from seeds. The solute is then separated from the solvent, and the solvent is recovered for extraction of more solute. [0005] However, the problem is that often there will be residual solvent in the final...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G21/02C10G53/04
CPCB01D11/0407B01D11/0403Y02B30/123Y02B30/52B01D19/0057B01D3/40B01D3/007B01D11/0203B01D11/028B01D11/0296B01D11/0488Y02P70/10
Inventor B·J·韦贝尔D·J·劳伦斯M·凯斯
Owner ACCUDYNE SYST
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