high-pressure process

high-pressure process

[′hī ¦presh·ər ′prä·səs]
(chemical engineering)
A chemical process operating at elevated pressure; for example, phenol manufacture at 330 atmospheres (1 atmosphere = 101,325 pascals), ethylene polymerization at 2000 atm, ammonia synthesis at 100-1000 atm, and synthetic-diamond manufacture up to 100,000 atm.
References in periodicals archive ?
The company will invest over S$ 250 million ( 148 million) to build, own and operate a facility capable of producing 140 tonnes per hour of high-pressure process steam using industrial and commercial waste collected by Sembcorp s solid waste management operations, the leading operator in Singapore.
Then they survey various types and applications of processes, among them low-density polyethylene high-pressure process, high-pressure-high-temperature power plant processes, and the impact of high pressure on enzymes.
In the past, high-pressure centrifugal compressors suffered from rotordynamic instability because high-pressure process gas produces considerable excitation and reaction forces on the rotor.
In these cases, gate velocity can be the same as the conventional high-pressure process.
Located in the Sakra area of Jurong Island, the facility will consist of two boilers capable of producing a combined 140 tonnes per hour of high-pressure process steam to serve the needs of petrochemical manufacturers in the vicinity.
Since its commercialization by GE in 1958, this rugged and expensive high-pressure process for synthesizing diamond has become the basis of a half-billion-dollar per year abrasive-grit industry whose end-products include diamond-coated cutting tools for drilling, mining, quarrying, precisely machining automotive parts and producing dies used by wire makers.
Castings produced using the UBE high-pressure process were shown by Shu Suzuki, UBE Industries, Ltd.
To predict temperature, the models would require equations that describe all heat transfer phenomena that could occur during the compression, pressure-holding and decompression phases of the high-pressure process.
For example, the company's new 650 million-pounds-per-year UNIPOL polyethylene facility to be built in Louisiana will use advanced technology to create new and better polyethylene resins aimed at replacing high-pressure process polyethylenes currently in short supply.

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