TH21117B - Process for cleaning wastewater from an alleviation reaction. Which is carried out by hydrogenation - Google Patents

Abstract

DC60 (18/02/42) describes a process for the purification of wastewater resulting from the preparation of alcohol.This alcohol preparation consists of an alkalisation reaction, a further hydrogenation and a distillation. The last alcohol Wastewater consists of different parts of wastewater from the different alcohol preparation stages.These wastewater purification processes include acidification and water extraction. One or more of these wastes and consists of bringing one or more parts of the wastewater into the strainer. Connected in the way of the process Describe a process for purifying wastewater resulting from the alcohol preparation.This alcohol preparation consists of an oxidation reaction, a further hydrogenation and a distillation. The last alcohol Wastewater consists of wastewater from the different alcohol preparation stages.These wastewater purification processes include acidification and water extraction. One or more of these wastes and consists of bringing one or more parts of the wastewater into the strainer. Connected in the way of the process

Claims (6)

1.Processes for rinsing wastewater from alcohol preparation, which the preparation consists of Alleviation reaction And the continued hydrogenation, in which these wastewater has three parts, (1) the aqueous solution cycle with the hydrogenation catalyst, (2) the wastewater from the process. Unsaturated alpha, beta - aldehyde produced in the purification aldehydes and (3) rinsing water from the rinsing of the remainder of the distillate alcohol, and the wastewater fraction. It is extracted with monohyric alcohol with 8-16 carbon atoms in molecules and / or with hydrocarbons with 6-12 carbon atoms in molecules, consisting of (a) pre-reaction currents of extraction, which are pre-combined. At least two parts of the three parts wastewater and rectify them to pH 0-6, preferably 1-3 and, if appropriate, eliminate the cycle. The organic matter arises during this time and (b) in a process path, which takes one or more of the three parts of the wastewater and / or combined into contact with the combined filter and finally (c). Including all three parts of wastewater And the mixtures are taken for extraction 2. The process referred to in Clause 1, which includes the wastewater parts (1) and (3) before the procedure (a), corrects pH to 0-6, Should be used is 1-3 and, if appropriate, free. From the organic cycle that occurred And then combine the rest of the wastewater with part (2) wastewater, process by collecting the mixture through a linked filter. And then taken to extraction 3. The process referred to in Clause 1, which includes the wastewater part (1) and (3) before the procedure (a), corrects pH to 0-6, Should be used is 1-3 and, if appropriate, free. From the organic cycle that occurred And then combine the rest of the wastewater with part (2) wastewater which has passed to Linked filters And feed the mixture to extraction 4. The process referred to in Clause 1, which includes the wastewater part (1) and (3) before the procedure (a), corrects pH to 0-6, The preferred use is 1-3, if appropriate, independent of The organic cycle that occurred And proceed through the interlocking filter And then combine the rest of the wastewater with Wastewater part (2), which is also passed through the connected filter. And feed the mixture to extraction 5. The process referred to in Clause 1, which includes all three (1), (2) and (3) of the wastewater first, amended pH to 0-6, where Should be used is 1-3 and, if appropriate, independent of The organic cycle that takes place, then this process is carried out by collecting the mixture through a combined filter and leading it to extraction. 6. The process referred to in any one of Clause 1-5, which modifies pH with hydrochloric acid, sulfuric acid, nitric acid. Sid or phosphoric acid