Since a difference in boiling level between glycerin (290 ° C) and acrolein (53°C) and acrylic acid is large, the response is effected ideally at relatively decrease temperatures so as to distil out acrolein constantly. Patent US 5 426 249 describes the same gas-part process for the dehydration of glycerol to acrolein, but adopted by a hydration of the acrolein and a hydrogenation to result in 1,2- and 1,3- propanediol. WO 07/090990 and WO 07/090991 , that's say to perform the glycerol dehydration stage beneath the propylene oxidation reactor of the standard course of, taking advantage of the high temperature of the gas coming out of that stage containing primarily acrolein and a few remaining propylene..

Acrolein an important artificial intermediate for the chemical trade is at the moment produced industrially by oxidation, within the gasoline phase, vapor sale of propylene via the oxygen within the air within the presence of catalyst techniques based mostly on blended oxides based mostly on Molybdenum-Bismuth-Iron and several other other metals. Products are condensed in a condenser and Vape Kits Mods Tanks quantitative-analyzed by a gasoline chromatograph.

HP6890 chromatograph outfitted with an FID detector with the identical samples saved at -15°C. Samples of the effluents are collected periodically.

Crystals or solids are being produced by chemical dissolutions-reactions in the autoclave. Glycerol derived from animal fats or vegetable oils within the manufacturing of bio diesel fuels or oleochemicals is among the substitutes envisaged for propylene, glycerol being ready to supply acrolein when subjected to a catalytic dehydration reaction.

40% to 100% by weight of glycerol, dilution to the optimum content being performed by recycling among the steam produced by the reaction and of the dilution water. Patent US 5 387 720 describes a course of for producing acrolein by dehydration of glycerol, within the liquid part or within the gas part over acidic strong catalysts defined by their Hammett acidity. C3 or vapeseveral C4 precursors, described in document US 2005/0020851, may also be appropriate for the manufacture of acrolein by way of dehydration of glycerol, which is the subject of the present invention.

One subject of the current invention is thus a course of for vape best seller manufacturing acrolein by gasoline-section dehydration of glycerol within the presence of strongly acidic strong catalysts with a Hainmett acidity of between -9 and - 18 and ideally between -10 and Vape Kit -16. US Patent US 5,387,720 discloses a course of for producing acrolein by dehydration of glycerol in liquid part or Vape Clearance in gasoline part at a temperature ranging as much as 340°C, over acidic solid catalysts which might be defined by their Hammett acidity.

85 cm lengthy and with an inside diameter of 6 mm is used to perform the glycerol dehydration reaction in the gas section at atmospheric stress. The trap on the reactor outlet is then replaced, the nitrogen flow is stopped and the reactor vapeseveral is returned under a circulate of reagent.