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Dual mixed refrigerant system

A mixed refrigerant and refrigeration system technology, which is applied in the directions of refrigeration and liquefaction, cold treatment separation, solidification, etc., and can solve the problems of low efficiency of cascading systems

Inactive Publication Date: 2017-08-29
BLACK & VEATCH HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cascaded systems still suffer from inefficient operation
[0005] Although progress has been made in natural gas liquefaction technology, improvements are still needed in terms of operating efficiency and power consumption

Method used

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Examples

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Embodiment Construction

[0017] The following detailed description of embodiments of the invention refers to the accompanying drawings. The examples are intended to describe various aspects of the invention in sufficient detail to enable those skilled in the art to practice the invention. Other embodiments may be utilized and changes may be made without departing from the scope of the claims. Accordingly, the following detailed description should not be viewed in a limiting sense. The scope of the invention is to be defined only by the appended claims, along with the full scope of equivalents to which such claims are entitled.

[0018] The present invention generally relates to methods and systems for liquefying hydrocarbon-containing gases to thereby form a liquefied natural gas (LNG) stream that includes methane. As described below, these methods and systems may utilize dual mixed refrigerant systems to assist in the liquefaction of methane from hydrocarbon-containing gases. hereinafter according...

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Abstract

Processes and systems are provided for recovering a liquefied natural gas (LNG) stream from a hydrocarbon-containing feed gas stream using dual closed-loop mixed refrigerant cycles. In particular, the processes and systems described herein can be used to efficiently and effectively liquefy methane from a hydrocarbon-containing feed gas stream with the use of a first refrigeration system and a second refrigeration system utilizing a first mixed refrigerant and a second mixed refrigerant.

Description

technical field [0001] The present invention generally relates to methods and systems for recovering liquefied natural gas ("LNG") from hydrocarbon-containing gases. More specifically, the present invention generally relates to methods and systems including dual mixed refrigerant systems. Background technique [0002] In recent years, the demand for natural gas has been increasing. In many instances, natural gas is found in areas remote from markets for natural gas. Unless the gas is located close enough to the market, it is feasible to construct pipelines to transport the gas, otherwise the gas must be transported by tank trucks and so on. Transport of natural gas in vapor form requires considerable tanker volume; therefore, it is customary to liquefy natural gas for storage and transport. The use of liquefied natural gas and methods for its storage are well known. Natural gas can also be liquefied at the point of use when a surplus of natural gas is available, but poss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25J1/00F25J3/06
CPCF25J1/0035F25J1/0042F25J1/0052F25J1/0057F25J1/0214F25J1/0238F25J1/0288F25J1/0292F25J2220/64F25J2230/08F25J2230/30F25J2230/20F25J1/0022
Inventor J·L·赛特尔T·D·米勒D·D·米勒
Owner BLACK & VEATCH HLDG