acid process


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acid process

[′as·əd ‚prä·səs]
(chemical engineering)
In paper manufacture, a pulp digestion process that uses an acidic reagent, for example, a bisulfite solution containing free sulfur dioxide.
(metallurgy)
A melting process carried out in a furnace lined with acidic materials which combine readily with the oxides in the ore.
References in periodicals archive ?
This needs further research that will make the acid process applicable to leaching most of the ore.
By acquiring DSM, SABIC gained one key technology - Stamicarbon - to add to three processes it has developed: the Acetic Acid process created at its R&T unit; Alpha-Sablin, developed jointly with Linde of Germany; and a new venyl acetate monomer process used at its semi-commercial acetic acid plant at Yanbu' on stream in 2004.
The results obtained from the acid process gelatin: protein (84.
He says his process, which involves the transmethylation of vegetable oils to produce biodiesel methyl esters, "converts the fatty acids by an acid process [in] 30 minutes and then converts the triglycerides by a base process in seconds.
For silicon nitride removal, the industry has traditionally used a hazardous, 160 degrees Celsius to 180 degrees Celsius hot-phosphoric acid process in a wet bench.
Skin peels using the glycolic acid process are performed at the clinic.
Battista developed an acid process that cleaves off the hinges without attacking the crystals.
Myriant has agreements with ThyssenKrupp Uhde GmbH for engineering, Davy Process Technology for the integration of Myriant's bio-succinic acid process with the Davy butanediol process for the production of bio-based butanediol, and PTT Chemical for the commercialization of Myriant's technology in Southeast Asia.
Verdezyne has designed its proprietary adipic acid process specifically for the production of nylon 6,6.
Other topics include origins of the discovery of the new Cezus process for separating zirconium and hafnium by extractive distillation, physical phenomena concerning corrosion under irradiation of zirconium alloys, and zirconium corrosion resistance as a key to success for the methanol carbonylation acetic acid process.
By acquiring DSM, SABIC gained one key technology - Stamicarbon - to add to three processes it has developed: the Acetic Acid process created at its Research & Technology (R&T) unit; Alpha-Sablin, developed jointly with Linde of Germany; and a new venyl acetate monomer process, to be used at its semi-commercial acetic acid plant at Yanbu' to start up in 2004.