The nature of these sediments spans in short distance from clay- and mud- rich weak mineral bonds to coarser and stronger sediment rocks. Therefore, the uniaxial compressive rock strength (UCS) can vary from 2 MPa for clay shale to 140 MPa for sandstone [35,36]. Secondly, coal measure ...
Temperature in the conversion zone in conversion conditions is 340-500掳C, pressure ranges from 100 kPa to 5 MPa, and the hourly average rate of feeding the material is 2-50 h.EFFECT: high concentration of the xylene isomer with reduced loss of aromatic compounds and processing costs.7 cl,...
a paraffin with an olefin is carried out at high temperatures (about 500° C.) and pressures 21-41 MPa (3000-6000 psi). Under these conditions, both normal and isoparaffins can be brought into reaction by a free-radical mechanism. Thermal alkylation is not known to be practiced ...
This invention is drawn to a process for producing and recovering one or more high-purity xylene isomers from a feed stream having a substantial content of C9 and heavier hydrocarbons. The feed stream is processed to de-ethylate heavy aromatics, fractionated and passed to a circuit comprising C8...
1 at total pressure equal to or greater than about 80 psig (0.552 MPa gauge), over a catalyst which comprises cobalt, or cobalt and thoria in catalytically active amount composited with titania or titania-containing support, wherein the titania support is one having a rutile: anatase ratio of...
The extracted fibers exhibited a normal distribution in diameter ( d avg. =32.1m); the modulus and strength varied inversely with diameter, and their average values were 19.1 GPa and 172.3MPa, respectively. The cattail fiber composites were manufactured using non-woven mats, Stypol polyester ...
temperature ranges from 350掳C to 600掳C, pressure from 10.1 kPa to 10.1 MPa and hourly rate from 0.1 to 100 h-1, which allows for efficient selective conversion of oxygen-containing compounds to propylene, with the aim of obtaining effluent which contains basic amount of olefin product C3-...
of a monosilane compound from the high boiling residue at a temperature of 150-500°C and at a whole reactor gauge pressure of 689.5kPa to 34.5MPa (100-5000psi) to obtain the monosilane compound of formula II [(y) is 0-4; (n) is 0-3; (y)+(z)=0-4].;COPYRIGHT: (C)1998,...
(LNG) at a pressure of between 1035 and 7590 kPa and a temperature of between -123 to -62[deg]C is constructed from an ultra-high strength low alloy steel containing less than 9% wt nickel and with a tensile strength greater than 830 MPa and a ductile to brittle transition temperature ...