摘要:
Conditioning a fluid in the gaseous state by cooling it, for the sea transportation of CNG, during filling (fig. 1b) and during storage (fig. 3, 4) inside containers of the vertical pressure-vessel type, including multiple treatment steps for lowering the temperature, including a) air-jet cooling; b) seawater cooling using an exchanger for the seawater/gas, or seawater cooling; c) chilling with refrigerating cycle using an improved compressor/evaporator, or cryogenic cycle; where said treatment steps are combined with the aim to decrease the working pressure carrying the same quantity of gas or increase the gas density (so the capacity) maintaining the same working pressure; and where the gas stored and transported inside the said pressure vessels is thermally insulated from the exterior thereof.
摘要:
A system for offloading a compressed fluid from a series of pressure vessels, the system comprising a multilevel piping system and at least one ejector device, the ejector device being for recovering energy from a high pressure fluid stream from a substantially full pressure vessel, and for forced suction of residual fluid from a part offloaded pressure vessel, the multilevel piping system comprising, in use, at least three different pressure levels, including a high pressure line, a medium pressure line and a low pressure line, the high pressure line being intended to supply the said ejector device with the high pressure fluid stream, the medium pressure line being intended for both the forced suction of the residual fluid and mixing with the high pressure line, and the low pressure line being intended for each of mechanical suction of the residual gas not drawn off by the ejector, recompression thereof by means of at least one compression turbomachine, and assisting energy recovery by transferring heat via gas/gas exchangers.
摘要:
An integrated dual-fuel feed circuit system for converted marine engines (80), using CNG gas extracted from the containers (21) together with also the residual part called "heel", said gas being conveyed inside a treatment and conditioning unit (10) of the skid-mounted type and being rendered utilisable as fuel. A skid mounted type product is one that is delivered off the shelf, ready to go, usually on skids, so that it can be sited on the workfloor/deck and pushed into its final position on the skids (or manipulated thereto with a forklift).
摘要:
A storage system for compressed natural gas which includes at least one storage vessel for storing CNG and a cooling station wherein the storage vessel is connected to the cooling station so that CNG may be stored in the storage vessel after had been passing through the cooling station and once the stored gas conditions fall out a set range, it is cooled in the cooling station, and returned to the storage vessel, wherein the storage vessel is thermally insulated from the exterior thereof thanks to the composite materials and especially glass-reinforced polymers whose pressure vessels are made.