Abstract:
A catalytic tank heater includes a catalytic heating element supported on an LPG tank by a support structure that holds the element in a position facing the tank. Vapor from the tank is provided as fuel to the heating element, and is regulated to increase heat output as tank pressure drops. The heating element is internally separated into a pilot heater and a main heater, with respective separate fuel inlets. The pilot heater remains in continual operation, but the main heater is operated only while tank pressure is below a threshold. Operation of the pilot heater keeps a portion of the catalyst hot, so that, when tank pressure drops below the threshold, and fuel is supplied to the main heater, catalytic combustion quickly expands from the area surrounding the pilot heater to the remainder of the catalyst.
Abstract:
Methods and apparatus for offloading CNG from high-pressure storage vessels (22) are provided. The methods and apparatus are operable to warm the offloaded CNG either before or after a letdown in pressure to ensure that the delivered product is gaseous and that delivery of condensed products to downstream equipment is avoided. Particularly, a heating assembly (32) configured to warm a stream offloaded from a vessel (22) and flowing through a coil-shaped conduit (84) by infrared energy emitted by one or more heating elements (70) is provided upstream or downstream of a pressure reduction device (50).
Abstract:
Disclosed is an liquid natural gas supply and delivery system with a multimode fuel gas delivery system and process. The tender is capable of supplying gaseous methane fuel to an cryogenic tank via direct pumping, pressure transfer, or any combination mode due to a configuration of pumps, heat exchangers, and piping and controls. There is redundancy in the tender and it can operate with saturated or unsaturated liquid
Abstract:
An LNG tank as disclosed can include an inner shell of stainless steel and an outer shell spaced at a distance from the inner shell, the inner and outer shells defining an isolation space therebetween. A double-walled pipe of stainless steel connected to the LNG tank can include an inner pipe. The outer wall of the pipe can be connected to the inner shell by a bellows-like pipe fitting welded to the outer wall of the pipe(s) and to the inner shell of the tank. The inner pipe for extending into a tank room can be connected to a valve in a valve block, and the outer wall of the pipe extending into the tank room can be welded to the valve block to provide a continuous secondary barrier for the inner pipe between the inner shell of the tank and the valve block.
Abstract:
Methods and apparatus for offloading CNG from high-pressure storage vessels (22) are provided. The methods and apparatus are operable to warm the offloaded CNG either before or after a letdown in pressure to ensure that the delivered product is gaseous and that delivery of condensed products to downstream equipment is avoided. Particularly, a heating assembly (32) configured to warm a stream offloaded from a vessel (22) and flowing through a coil-shaped conduit (84) by infrared energy emitted by one or more heating elements (70) is provided upstream or downstream of a pressure reduction device (50).
Abstract:
A catalytic tank heater includes a removably attached catalytic heater cartridge having catalytic material. The heater is attached to an LPG tank to position the catalytic heater cartridge to face the tank. The catalytic heater cartridge covers a plenum chamber of the catalytic tank heater. A fuel distribution header and heating element are positioned within the plenum chamber and are controlled to initiate combustion of the catalytic material to heat the tank. Vapor from the tank is provided as fuel to the catalytic tank heater, and is regulated to increase heat output as tank pressure drops. The catalytic heater cartridge can be replaced with a new cartridge while at the location of the tank on a property.
Abstract:
In various embodiments, lined underground reservoirs and/or insulated pipeline vessels are utilized for storage of compressed fluid in conjunction with energy storage and recovery systems.
Abstract:
A gas cylinder (1) formed of a cylinder body (2) with a tubular wall (5) having at least a first tubular portion (11) that is enlarged, and at least a second tubular portion (12) that is adjacent and narrowed relative to the first tubular portion (11).
Abstract:
These inventions related to systems and methods for producing, shipping, distributing, and storing hydrogen. In one embodiment, a hydrogen production and storage system includes a plurality of wind turbines for generating electrical power; a power distribution control system for distributing, and converting the electrical power from the wind turbines, a water desalination and/or purification unit which receives and purifies seawater, and an electrolyzer unit that receive electrical power from the power distribution system and purified water from the desalination units and thereby converts the water into hydrogen and oxygen. After its production, hydrogen is stored, transported, and distributed in accordance with various embodiments.
Abstract:
Vehicles, systems, and methods for delivering natural gas and providing mobile fueling services are disclosed. A method of delivering natural gas includes: delivering a source vehicle to a receiving tank for receiving natural gas at a remote refueling location, the source vehicle having a natural gas engine for driving the vehicle and a source tank disposed onboard the source vehicle for storing the natural gas; and transferring natural gas from the source vehicle to the receiving tank using pressure equalization between the source tank and the receiving tank and using a compressor disposed onboard the source vehicle. The onboard compressor is operatively connected to and powered by the source vehicle engine. The source tank is adapted to store a volume greater than or equal to about 200 DGE of natural gas and supplies natural gas to power the source vehicle engine.