Distillation partial

Extractive distillation (partial reboiler-total condenser) 2C + 2N+12... 

Sulphates of the alkali- and alkaline-earth metals are stable at all temperatures lower than that of the electric arc but all other sulphates decompose, the primary product being the oxide of the metal and sulphuric anhydride the latter, however, being unstable at a red-heat, decomposes partly into sulphur dioxide and free oxygen. This decomposition is made use of in the preparation of Nordhausen sulphuric acid, a fuming liquid, consisting chiefly of H2S207 it is made by distilling partially dried ferrous sulphate from fireclay retorts 2 Fe S 04 = Fe2 Oa + S 02 + S 03 the... 

The submitters recommend a short path distillation apparatus with large sections (i.e., wide bore) since the distillate partially crystallizes in the condenser during the distillation. It is important that the distillation apparatus have a Claisen head because the viscous material tends to bump. 

Pervaporation have been considered an interesting alternative process for the current industrial options for aroma recovery, distillation, partial condensation, solvent extraction, adsorption, or a combination thereof. It is considered a basic unit operation with significant potential for the solution of various environmental and energetic processes (moderate temperatures). This separation process is based on a selective transport through a dense membrane (polymeric or ceramic) associated with a recovery of the permeate from the vapour phase. A feed liquid mixture contacts one side of a membrane the permeate is removed as a vapour from the other side. Transport through... 

Simple distillation Partial (vapor product) condenser Partial (liquid product) reboiler 14 equilibrium stages Feed to stage 6 Properties ... 

The oil of vitriol prepared at Nordhausen and other places by the old process of distilling partially dried green vitriol (whence its name) often fumes on exposure to the air, and is called Nordhausen oil of vitriol, or fuming sulphuric acid. It is, in fact, a compound of 1 eq. anhydrous acid, and 1 eq. of common or hydrated sulphuric acid=HO, 2 SO, or HO, SO,+SO,. When the fuming acid of Nordhausen is distilled at about 290", anhydrous acid distils over, and hydrated acid remains behind. Most specimens of the fuming acid contain 5 to 8 per cent, of hydrated acid, in excess beyond the formula HO, SO,+SO,. 

Rectification is the separation of the constituents of a liquid mixture by successive distillations (partial vaporizations and condensations) and is obtained via the use of an integral or differential process. Separations into effectively pure components may be obtained through this procedure. 

Owing to the high dilution of the target components in the feed stream, commercial aroma recovery plants are somewhat complex. The current industrial processes for aroma recovery are distillation, partial condensation, or a combination thereof. " High vacuum distillation is the preferred method. In partial condensation, the first... 

Partial distillation Partial condensation Absorption Extraction Adsorption... 

If the chosen catalyst is completely water insoluble, e.g. Ci6H33P Bu3C1 [25], separation of product from the reaction mass would probably be by distillation. Partially water miscible salts, e.g. a tetra- -butyl ammonium salt can be removed by water washing. 

Crude distillation Partial oxidation Power Plcint... 

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