4.01.02 Ethanol Blending - K-Patents

CHEMICALS AND ALLIEDAPPLICATION NOTE 4.01.02ETHANOL BLENDINGw w w . k p a t e n t s . c o mETHANOL C 2 H 5 OH, ETHYL ALCOHOLTypical end productsAntiseptics, antidotes, solvent, synthesis of chemicals, spirits, fuel(see also Application Note 9.01.03 Bioethanol Stillage Processing)Chemical curve: Ethanol R.I. per Conc% b.w. at Ref. Temp. of20˚CnD1.36501.36001.35501.35001.34501.34001.33501.3300nD1.36481.36401.36321.36241.36160.0 10.0 20.0 30.0 40.0 50.0 60.0concentration (%)IntroductionEthanol (Ethyl Alcohol) is a colorless liquid, which ismiscible with water when heat is applied to it. Alcoholhas traditionally been manufactured by thefermentation of materials containing starch andsugars.At present, most of the alcohol is made with thecatalytic hydration of ethene. Ethanol, an alcoholsuitable for human consumption, is widely used as asolvent and for the synthesis of other chemicalproducts. It is also used as a fuel.ApplicationIn the pharmaceutical industry, an alcohol and watermixture is used in HPLC (High Performance LiquidChromatography).The required concentrations are obtained by mixinga full strength solution with water. The alcohol andwater mixture is kept at a constant temperature ofaround 15ºC (59ºF) by a plate cooler.1.36081.360090.0 92.0 94.0 96.0 98.0 100.0concentration (%)

CHEMICALS AND ALLIEDAPPLICATION NOTE 4.01.02ETHANOL BLENDINGw w w . k p a t e n t s . c o mInstallationThe K-Patents Process Refractometer PR-23-A isused to control and measure the concentration ofalcohol in water.Appropriate equipment with hazardous and intrinsicsafety approvals are available when required.Typical measurement range is 0-50% and the normalprocess temperature is about 15ºC (59ºF).InstrumentationDescriptionK-Patents Sanitary Compact Refractometer PR-23-AC for small pipe line sizes of2.5 inch and smaller.The PR-23-AC sensor is installed in the pipe bend. It is angle mounted on theouter corner of the pipe bend directly, or by a flow cell using a 3A Sanitary clampor Varivent® connection.K-Patents Process Refractometer PR-23-GP is an industrial refractometer forlarge pipe sizes and tanks, cookers, crystallizers and kettles. Installation througha flange or clamp connection.Area classification:Measurement range:Intrinsic safety and hazardous area approvals available.Refractive Index (nD) 1.3200 – 1.5300, corresponding to 0-100 % by weight.