Abstract: A low heat-leak cryogenic system comprising a cryogenic fluid, a first lamina having an external side facing toward and exposed directly to, or indirectly to, the cryogenic fluid and an internal side facing away from the cryogenic fluid; a second lamina spaced apart from the first lamina, and at least one block or layer of coherent aerogel extending from the first lamina to the second lamina. In another version, the aerogel is in a gaseous environment having a pressure not greater than 250,000 micrometers of mercury. In another version, at least one of the lamina is flexible so as to at least partially transmit an external load, such as that imposed by the atmosphere, to the coherent aerogel, and the coherent+ aerogel is capable of at least partially transmitting a load imposed on it from one lamina to the other.

Abstract: A trailer with piping and accessories capable of maintaining the ultra high purity of a cryogenic liquid while receiving and transporting the liquid, purging an external receiver, and transferring liquid to the receiver. The trailer has a heat exchnger for vaporizing a liquid flow from its liquid container into warmed gas. The gas is used for purging an external receiver and for pressurizing the liquid container sufficiently to transfer liquid into the purged receiver. The trailer piping allows purging of and then transferring to the receiver without opening any connections. The number of welded surfaces in the trailer capable of trapping and generating contaminants are reduced, particularly the number of welded penetrations of the liquid container.

Abstract: A trailer for cylindrical fluid containers, particularly compressed gas tubes, arranged in modules individually removable from the trailer. Each module has a front and a rear bulkhead between which tubes are supported. The tubes have reduced cylindrical ends which protrude through and are supported in openings in the bulkheads. At least one end of the tubes is threaded and clamped by a nut or a collar flange to a bulkhead. Each bulkhead has a stiffening, right-angle flange along each vertical edge which aligns with and is clamped to each adjacent module. At their bottom, the bulkheads abut and are attached to an upwardly extending side of an L-shaped structural member, the other side being mounted to the trailer frame. The tubes are arranged in line horizontally and vertically with space between them.

Abstract: A labyrinth seal for sealing the gap between the rotating impeller assembly and the stationary housing of turbomachinery comprising a seal holder which serves simultaneously to comprise the stationary part of the seal and to contact process gas so as to maintain the stationary seal part temperature at about the temperature of the rotating part, thus reducing differential thermal change between the stationary and rotating members of the labyrinth seal.

Abstract: Process for solid refuse disposal in which a vertical shaft furnace is maintained at 30-250 psia, part of the recycle-condensate is filtered to form liquid waste a portion of which is incinerated with a minor part of the product gas to form hot exhaust gas used to heat feed water in steam boiler zone, and energy from the resulting steam is recovered as part of the process energy requirement.

Abstract: Apparatus for disposing of pelletized refuse by conversion into useful gaseous products and inert solid residue, comprising a vertical shaft and an enlarged hearth beneath the shaft, with a multiplicity of tuyeres for feeding oxygen-containing gas into the hearth.