Akzo Nobel N.v.

Akzo Nobel Chemicals International B.v.

Nouryon Chemicals International B.v.

Gerrald Bargeman

Cornelis Elizabeth Johannus Van Lare

René Lodewijk Maria Demmer

Jan Barend Westerink

Mateo Jozef Jacques Mayer

Boris Kuzmanovic

Maarten André Irène Schutyser

Mateo Jozef Mayer

Maarten Andre Schutyser

Rene Lodewijk Demmer

Cornelis Elizabeth Van Lare

André Banier De Haan

Cornelis Johannes Govardus Van Strien

Melle Rinze Nieuwhof

Boelo Schuur

Anton Alexandru Kiss

Jacobus Theodorus Josef Aaldering

Mark Theodorus Gerardus Jongmans

Antoon Ten Kate

Antoon Jacob Berend Ten Kate

Paul Verwer

Johannes Jozef Pragt

Peter Jan Nieuwenhuizen

Marco Johannes Wilhelmus Frank

Johannes Josef Pragt

Alex Londoño Rodriguez

Alex LONDOÑO Rodriguez

Maikel Maria Van Iersel

Matheus Theodorus De Groot

The present invention pertains to a process for separating monochloroacetic acid and dichloroacetic acid from one another via extractive distillation using (a) an extractive agent that is chemically stable and has a BFaffinity of between 65 kJ/mole and 110 kJ/mole and (b) an organic solvent that is either an acid with a lowest pKa of between 3.0 and 6.5 or a base with a BFaffinity of between 40 kJ/mole and 75 kJ/mole with the proviso that said BFaffinity is lower than the BFaffinity of the extractive agent, said organic solvent being chemically stable, and having a boiling point at atmospheric pressure of at least 468K, comprising the steps of (i) contacting a mixture comprising monochloroacetic acid and dichloroacetic acid with the extractive agent, (ii) distilling the mixture obtained in step (i) to obtain a monochloroacetic acid stream and a stream comprising dichloroacetic acid and the extractive agent, (iii) subjecting the stream comprising dichloroacetic acid and the extractive agent to a regeneration step, wherein the organic solvent is contacted with the mixture comprising monochloroacetic acid and dichloroacetic acid of step (i), or wherein the organic solvent is contacted with the mixture obtained in step (i) prior to and/or during step (ii), or wherein the organic solvent is contacted with the stream comprising dichloroacetic acid and the extractive agent obtained in step (ii) prior to or during step (iii), or any combination thereof.

Process for separating monochloroacetic acid and dichloroacetic acid via extractive distillation using an organic solvent

The present invention pertains to a process for separating monochloroacetic acid and dichloroacetic acid from one another via extractive distillation, comprising the steps of (i) contacting a mixture comprising monochloroacetic acid and dichloroacetic acid with an extractive agent which is chemically stable and which has a BFaffinity of between 65 kJ/mole and 110 kJ/mole, (ii) distilling the mixture to obtain a monochloroacetic acid stream and a stream comprising dichloroacetic acid and the extractive agent, and (iii) regenerating the extractive agent.

Process for separating monochloroacetic acid and dichloroacetic acid via extractive distillation

The present invention relates to process to prepare a chlorine-containing compound using an aqueous salt solution containing at least 100 g/l of sodium chloride and a contaminating amount of polyvalent cations comprising the steps of (i) preparing an aqueous salt solution containing at least 100 g/l of sodium chloride and at least 0.01 ppm of polyvalent cations by dissolving a sodium chloride source in water, (ii) adding an effective amount of at least one positive retention enhancing component to the aqueous solution, (iii) subsequently subjecting the solution to a nanofiltration step, thereby separating the solution into a retentate which is enriched for polyvalent cations and a permeate which is the purified aqueous salt solution, (iv) reacting the chloride anions in the permeate to a chlorine-containing compound by an electrolysis step, and (v) recycling at least part of the retentate to dissolution step (i).

Process to prepare chlorine-containing compounds

The present invention relates to a process to prepare salt comprising the following steps: (i) preparing an aqueous salt solution containing at least 100 g/l of sodium chloride and at least 0.01 ppm of polyvalent cations by dissolving a sodium chloride source in industrial water, (ii) adding an effective amount of at least one positive retention enhancing component to the aqueous salt solution, (iii) subsequently subjecting the solution to a nanofiltration step, thereby separating the solution into a retentate which is enriched for the polyvalent cations and a permeate which is the purified aqueous salt solution, and (iv) concentrating the permeate to produce salt.

Process to prepare salt

The invention pertains to removing soluble alkali metal or ammonium salt of a divalent anion from brine comprising following steps: obtaining brine with NaCl-concentration between 150g/L and saturation in the presence or absense of a cyrstal growth inhibitor for NaCl(GCI-NaCl),or with NaCl concentration above saturation in the presence of a CGI-NaCl, said brine optionally comprising a crystal growth inhibitor for the alkali metal or ammonium salt of the divalent anion(CGI-DA); if necessary, acidify the solution to pH&#x3c;11.5; if the concentration of CGI-DA is less than 20 mg/L, adding CGI-DA to obtain at least 20 mg CGI-DA/L; subjecting the solution to a membrane filtration; if the concentration of CGI-DA in the concentration from the separation is less than 20 mg/L, adding CGI-DA to obtain at least 20 mg CGI-DA/L; crystalling the concentration; removing the crystallized alkali metal or ammonium salt of the divalent anion.

Method for crystallizing soluble salts of divalent anions from brine

The invention pertains to a method and an apparatus for removing a nitrogen oxide (NO) from a gas by bringing the gas into contact with a scrub liquid in a scrubber for converting the nitrogen oxide into molecular nitrogen (N), wherein the scrub liquid comprises a metal ion chelate and a biomass, after which at least a portion of the scrub liquid is subjected to a membrane separation process for separating at least part of the metal ion chelate, and the biomass and other solidified components, from dissolved components, wherein the membrane separation process comprises:

Method for removing a nitrogen oxide from a gas

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Wageningen, Netherlands

Gerrald Bargeman