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Chemicals cryogenic

Industrial/Manufacturing Facilities can have large quantities of specialized chemicals, cryogens, reagents, fuels, and manufacturing and transportation equipment. Industrial waste dumps may be located directly adjacent to, or in the vicinity of the manufacturing facility. [Pg.152]

Applications are also found in other industries as diaphragms, flexible tubing, closures, seals, gaskets, convoluted tubing, and hose, particularly in the chemical, cryogenic, and aerospace industries. [Pg.546]

Drying. The single most common gas phase appHcation for TSA is drying. The natural gas, chemical, and cryogenics industries all use zeoHtes, siHca gel, and activated alurnina to dry streams. Adsorbents ate even found in mufflers. [Pg.280]

The cmde product from the gasifier contains CO2 and H2S, which must be removed before the gas can be used to produce chemicals. The Rectisol process is used to remove these contaminants from the gas. This is accompHshed by scmbbing the product with cold methanol which dissolves the CO2 and H2S and lets the H2 and CO pass through the scmbber. The H2S is sent to a Claus sulfur plant where over 99.7% of the sulfur in the coal feed is recovered in the form of elemental sulfur. A portion of the clean H2 and CO are separated in a cryogenic distillation process. The main product from the cryogenic distillation is a purified CO stream for use in the acetic anhydride process. The remaining CO and hydrogen are used in the methanol plant. [Pg.167]

The principal uses of PCTFE plastics remain in the areas of aeronautical and space, electrical/electronics, cryogenic, chemical, and medical instmmentation industries. AppHcations include chemically resistant electrical insulation and components cryogenic seals, gaskets, valve seats (56,57) and liners instmment parts for medical and chemical equipment (58), and medical packaging fiber optic appHcations (see Fiber optics) seals for the petrochemical /oil industry and electrodes, sample containers, and column packing in analytical chemistry and equipment (59). [Pg.394]

Gaseous helium is commonly used as the working fluid ia closed-cycle cryogenic refrigerators because of chemical iaertness, nearly ideal behavior at all but the lowest temperatures, high heat capacity per unit mass, low viscosity, and high thermal conductivity. [Pg.16]

A wide range and a number of purification steps are required to make available hydrogen/synthesis gas having the desired purity that depends on use. Technology is available in many forms and combinations for specific hydrogen purification requirements. Methods include physical and chemical treatments (solvent scmbbing) low temperature (cryogenic) systems adsorption on soHds, such as active carbon, metal oxides, and molecular sieves, and various membrane systems. Composition of the raw gas and the amount of impurities that can be tolerated in the product determine the selection of the most suitable process. [Pg.428]

Off-Gas Treatment. Before the advent of the shear, the gases released from the spent fuel were mixed with the entire dissolver off-gas flow. Newer shear designs contain the fission gases and provide the opportunity for more efficient treatment. The gaseous fission products krypton and xenon are chemically inert and are released into the off-gas system as soon as the fuel cladding is breached. Efficient recovery of these isotopes requires capture at the point of release, before dilution with large quantities of air. Two processes have been developed, a cryogenic distillation and a Freon absorption. [Pg.206]

Gra.de A. Types I and II both represent the requirements of the USP XX (26). The USP tests arose from original formal oxygen specifications made necessary by the low purity and certain contaminants, particularly CO and CO2, contributed by early chemical and cryogenic manufacturing methods. Containers marked Oxygen-USP must also indicate whether or not the gas has been produced by the air Hquefaction process (see also Fine chemicals). [Pg.480]

A sharp separation results in two high purity, high recovery product streams. No restrictions ate placed on the mole fractions of the components to be separated. A separation is considered to be sharp if the ratio of flow rates of a key component in the two products is >10. The separation methods that can potentially obtain a sharp separation in a single step ate physical absorption, molecular sieve adsorption, equiHbrium adsorption, and cryogenic distillation. Chemical absorption is often used to achieve sharp separations, but is generally limited to situations in which the components to be removed ate present in low concentrations. [Pg.457]

Thomas M. Flynn, Ph.D., P.E., Cryogenic Engineer, President CRYOCO, Lorrisville, Colorado Member, American Institute of Chemical Engineers (Section 11, Heat-Transfer Eqrripment)... [Pg.11]

In contrast to other cryogenic fluids, liquid oxygen is slightly magnetic. It is also chemically reactive, particularly with hydrocarbon materials. Oxygen thus presents a safety problem and requires extra precautions in handling. [Pg.1126]


See other pages where Chemicals cryogenic is mentioned: [Pg.143]    [Pg.143]    [Pg.270]    [Pg.481]    [Pg.497]    [Pg.68]    [Pg.74]    [Pg.143]    [Pg.143]    [Pg.270]    [Pg.481]    [Pg.497]    [Pg.68]    [Pg.74]    [Pg.2066]    [Pg.2456]    [Pg.195]    [Pg.196]    [Pg.88]    [Pg.88]    [Pg.88]    [Pg.295]    [Pg.55]    [Pg.365]    [Pg.384]    [Pg.126]    [Pg.331]    [Pg.250]    [Pg.77]    [Pg.80]    [Pg.298]    [Pg.477]    [Pg.306]    [Pg.16]    [Pg.464]    [Pg.314]    [Pg.316]    [Pg.326]    [Pg.336]    [Pg.1031]    [Pg.1126]    [Pg.1137]    [Pg.1255]    [Pg.1541]   
See also in sourсe #XX -- [ Pg.12 , Pg.258 ]




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