In the LNG plant, heat is provided to natural a gas processing system, including a pre-treatment unit and/or a liquefaction unit and/or an evaporation unit, by exploiting heat recovered through a steam generator of the plant that is thermally coupled to an exhaust outlet of a gas turbine of the plant. A heat transfer fluid circuit system with a circulating heat transfer fluid includes a first portion and a second portion; the first portion is located in a section of the steam generator to extract heat from to exhaust gases; the section is located between a stack and an evaporation section; the second portion is thermally coupled to the gas processing system so to provide heat thereto for example through an heat exchanger.

Systems and methods for natural gas liquefaction capacity augmentation using supplemental cooling systems and methods to improve the efficiency of a liquefaction cycle for producing liquefied natural gas (LNG).

A method and installation for storing and recovering energy, according to which a condensed air product is formed in an energy storage period, and in an energy recovery period, a pressure flow is formed and is expanded to produce energy using at least part of the condensed air product. For the formation of the condensed air product: the compression of air in an air conditioning unit, at least by means of at least one isothermally operated compressor device and the adsorptive cleaning of the air by means of at least one adsorptive cleaning device at a hyperbaric pressure level.

A seal system for sealing a first component with a second component is provided. The seal system includes layers of abutting planar seal segments. A first seal element is in a slot in the first component to slidably seal against a surface of the layers, and a second seal element is on a surface of the second component and engages with the second end of certain layer(s). Members extend from seal segments of one of the layers and a tension cable engages the members. A tensioner is coupled to end(s) of the tension cable to apply a tension force on the tension cable to force the seal segments to slidably seal the second seal element with the surface of the second component. The abutting planar seal segments can move freely perpendicular and parallel to the second component and can thermally contract/expand as necessary.

A LNG liquefaction plant system includes concurrent power production, wherein the refrigeration content of the refrigerant or SMR is used to liquefy and sub-cool a natural gas stream in a cold box or cryogenic exchanger. For concurrent power production, the system uses waste heat from refrigerant compression to vaporize and superheat a waste heat working fluid that in turn drives a compressor for refrigerant compression. The refrigerant may be an external SMR or an internal LNG refrigerant working fluid expanded and compressed by a twin compander arrangement.

A LNG liquefaction plant system includes concurrent power production, wherein the refrigeration content of the refrigerant or SMR is used to liquefy and sub-cool a natural gas stream in a cold box or cryogenic exchanger. For concurrent power production, the system uses waste heat from refrigerant compression to vaporize and superheat a waste heat working fluid that in turn drives a compressor for refrigerant compression. The refrigerant may be an external SMR or an internal LNG refrigerant working fluid expanded and compressed by a twin compander arrangement.

A system that integrates a power production system and an energy storage system represented by gas liquefaction systems is provided.