Copper based type Y zeolites were first described as a means of hydrocracking in a patent filed in 1963, and were soon implemented in environmental impact when used as fuel.
32.
An overheated hydrocracking unit, which exceeded its maximum safe temperature by 900 degrees Fahrenheit, caused the explosion and fire at the 156, 000-barrel-a-day refinery.
33.
The noble metals ( platinum and rhenium ) are considered to be catalytic sites for the dehydrogenation reactions and the chlorinated alumina provides the acid sites needed for isomerization, cyclization and hydrocracking reactions.
34.
Technological units operate at the refinery, including most units ensuring a high rate of crude oil refining depth ( delayed coking, hydrocracking, catalytic cracking, deasphalting, visbreaking, bitumen production ).
35.
The two most common applications of the Cu ( I ) Y Zeolite are catalytic decomposition of nitrous oxide to nitrogen and oxygen, and desulfurization of fuels used in the hydrocracking process for petroleum production.
36.
In 1984, the construction of a major lubricating oil manufacturing plant increased Richmond's lube oil base-stock output from 3, 800 to a day, using hydrocracking and hydrorefining processes developed by Chevron Research.
37.
Amoco Oil Co ., Texas City, Texas ( 465, 000 bbl / day ) C : The company says it restarted a 57, 000-bbl / day catalytic hydrocracking unit which had been down for routine maintenance since Jan . 3.
38.
The overhead offgas product from the stabilizer contains the byproduct methane, ethane, propane and butane gases produced by the hydrocracking reactions as explained in the above discussion of the reaction chemistry of a catalytic reformer, and it may also contain some small amount of hydrogen.
39.
It is estimated that catalytical hydrocracking produces several hundred metric tons of dicoronylene worldwide per year, making it the most prevalent large PAH . In this process, the analogous 18-ring PAH formed from coronene and ovalene ( ) is also formed in 1 % to 20 % proportions.
40.
A Diamond Shamrock spokesman said a 28, 000 barrel-a-day hydrocracking unit-- which produces high-octane gasoline-- will be shut Oct . 6 to Oct . 26 while a 82, 000 barrel-a-day crude distillation unit will be shut for three days starting Oct . 15.
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