An apparatus and method for sampling gases at elevated temperatures which is amenable to analysis in a manufacturing environment is described. In particular the method and apparatus can be used to determine accurate compositions of gas mixtures contained in blisters of elastomeric products. The device comprises a syringe 15,15a and a heated block 12,12a for receiving and holding syringe 15,15a, and for preheating or maintaining the temperature of syringe 15,15a. A thermostat may be associated wi...

There is described a process for the removal of at least one component of a liquid mixture, the basic process comprising directing a liquid mixture against the feed side of a membrane, directing a condensable vapor sweep stream past the permeate side of the membrane in a manner such that the flow of the condensable vapor sweep is substantially countercurrent to the flow of the liquid mixture, thereby transporting at least a portion of at least one component of the liquid mixture from the feed si...

A compressor system such as a refrigerating system comprising a compressor for discharging a condensable gas in the gaseous phase thereof, means for introducing oil into the compressor and an oil separator for separating oil from the discharged gas and return the oil to said introducing means, characterised in that the oil separator is divided in a primary separator having in known manner an oil colllection chamber from the primary separator and containing an amount of an oil rest out-washing li...

A condensable vapor engine, such as a steam engine, wherein the piston reciprocates between a top dead center position adjacent the closed end of the cylinder and a bottom dead center position in which vapor outlet ports are uncovered and the vapor escapes. The engine includes a valve located in the cylinder head and in communication with the source of vapor, this valve being disposed in a cavity having a cylindrical caging surface and facing a valve seat. The valve is arranged in spaced relatio...

This invention provides an apparatus for separating condensable gas, which is provided with, as a membrane for separating condensable gas, an inorganic porous membrane which has a layer having a multiplicity of micropores communicating in the thickness direction of the membrane and having a pore radius, as determined by the nitrogen absorption method, of up to 50 .ANG., and preferably up to 20 .ANG., and which has an affinity for said condensable gas or is hydrophilic. This apparatus yields high...

A process for removing and recovering a condensable vapor from a gas stream by a membrane contactor is disclosed wherein a gas stream containing a condensable vapor is circulated on one side of hollow fiber membranes while cool extraction fluid is circulated on the other side under a total pressure differential, thereby condensing the condensable vapor in the gas stream, the condensed vapor permeating the membrane and becoming entrained in the cool extraction fluid.

A process for the separation of a solvent from a substance in solution or in suspension in this solvent, or containing this solvent, comprising solidifying the solvent and then separating it from the substance by sublimation at reduced pressure in a lyophilisation chamber, in which an atmosphere is created within the chamber consisting essentially of a gaseous medium capable of existing in condensed state at a temperature above -196.degree.C and of having at that temperature a saturated vapour p...

Steam or other condensable vapor heated to a predetermined temperature at a predetermined pressure and having a given entropy is expanded in part in a work producing zone to a lower pressure and then condensed while the remaining part is expanded in a second zone; and following expansion, water is added thereto, with or without addition, or following withdrawal, of a portion of steam at the same state as the second portion of steam after expansion, to form a weight of steam greater than that int...

A nonwoven surface treating article suitable for treating surfaces while emitting little formaldehyde includes an open, lofty, three-dimensional nonwoven web of a plurality of thermoplastic organic fibers a bound together at places where they contact by a binder, binder comprising 1) a copolymer of an acrylate monomer and an acrylamide monomer, 2) the crosslinked reaction product of a polyol and a melamine crosslinking agent, and 3) the reaction product of a urea derivative and formaldehyde.

An apparatus for controlling the flows of products of decomposition in a thermogravimetric procedure such that condensation on the support for a sample and on the chamber is minimized. A mixing chamber is established about a portion of the sample support that is open to the region of the sample such that products of decomposition can enter within the hot zone about the sample. A purge gas is fed into the interior of the mixing chamber, also the hot zone, but spaced apart from the end closest to ...