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Method and apparatus for acid gas compression

A technology of acidic gas and compressor, applied in the method of using atmospheric pressure to chemically change substances, components of pumping devices for elastic fluids, mechanical equipment, etc., which can solve problems such as toxicity

Active Publication Date: 2015-04-29
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although H 2 S is ubiquitous in nature due to abundant non-anthropogenic resources (e.g., bacteria, thermal springs, volcanoes, and hot springs), but it is relatively toxic at higher concentrations

Method used

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  • Method and apparatus for acid gas compression
  • Method and apparatus for acid gas compression
  • Method and apparatus for acid gas compression

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Embodiment Construction

[0058] The present invention provides methods and systems for gas compression, in particular for compressing acid gas mixtures. Initially, it should be noted that the acid gas mixture that needs to be compressed for reinjection is typically a highly toxic gas mixture containing large amounts of hydrogen sulfide. Furthermore, the pressures required to achieve effective reinjection of acid gas mixtures into deep and secure geological formations are sufficiently elevated to require stringent measures to prevent accidental release of acid gas processed by surface reinjection units. Typically, an acid gas reinjection unit includes a series of compressors driven by high speed electric motors. In one aspect, the present invention addresses the need to control and eliminate process gas escape from an acid gas reinjection unit by locating a high speed motor for driving a gas compressor inside a pressure vessel configured to receive compressed acid gas from the compressor. Such a confi...

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Abstract

The present invention provides novel motor-compressor systems and methods useful for handling acid gas, by-produced produced in large quantities from natural gas refining. In one embodiment, a novel motor-compressor system comprises first compressor; a pressure vessel configured to receive a compressed gas from the first compressor; a heat exchanger coupled to the pressure vessel configured to cool the compressed gas and provide a cooled compressed gas; and an electric motor housed within the pressure vessel, wherein the electric motor is mechanically coupled to the first compressor, and wherein the pressure vessel is configured to receive at least a portion of the cooled compressed gas from the heat exchanger and contact the electric motor. The methods and systems described herein are particularly useful in acid gas re-injection operations where large quantities of acid gas are subjected to compression at high pressure and leakage prevention is critical.

Description

technical field [0001] The present invention relates generally to a motor-compressor system, and more particularly to a motor-compressor system for acid gas compression. Background technique [0002] Typically, the gas extracted from natural gas storage contains high concentrations of methane (CH 4 ), the main hydrocarbon component of natural gas, and also contains considerable concentrations of hydrogen sulfide (H 2 S) and carbon dioxide (CO 2 )gas. Purify the extracted natural gas to obtain relatively pure CH 4 , which can be transported through pipelines for domestic and industrial use. The main by-product of the natural gas purification process is acid gas, which mainly includes H 2 S and CO 2 mixture and variable amounts of moisture. Standard industry practice has converted acid gas mixtures to elemental sulfur, solid, gaseous CO 2 and water. Elemental sulfur is stored for subsequent use or disposal while CO 2 are discarded into the atmosphere. However, such ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J3/00
CPCF04D7/06F04D17/12F04D23/001F04D25/0606F04D29/5806Y10T137/0396Y10T137/86035Y10T137/86131
Inventor K·R·韦伯M·卡马蒂
Owner GENERAL ELECTRIC CO