摘要:
The present invention relates to a method for fractionating a feedstock into two or more fractions enriched with different components, and more particularly to a method for fractionating a feedstock into two or more fractions by a chromatographic sequential simulated moving bed (SMB) system, wherein the SMB system comprises a separation loop comprising at least 2 compartments; and wherein the method comprises a separation cycle comprising at least one feeding step, at least one circulating step and at least one eluting step; wherein the dissolved substances in the feedstock form a separation profile as they progress through the separation loop; and the separation profile is progressed more than once or less than once through the separation loop in each separation cycle; and wherein at least two flow paths are present in the separation loop during each feeding step of the separation cycle; and at least one of said flow paths is an active flow path and at least one of said flow paths is an inactive flow path.
摘要:
The invention relates to a method of separating and recovering xylose from a xylose-containing plant-based solution. The method is performed in a chromatographic separation system, which comprises one or more weak base anion exchange resins and optionally one or more other resins selected from strong acid cation exchange resins and weak acid cation exchange resins, by passing the solution through the separation system, followed by recovering at least one fraction enriched in xylose. Optionally, a rhamnose fraction may also be recovered.
摘要:
The invention relates to a three-profile chromatographic sequential SMB process of separating and recovering products such as sugars and betaine from multicomponent feed solutions. In the process of the invention, product fractions and optionally recycle fractions are collected from several positions of the chromatographic separation system. The process of the invention may be applied to the separation of sucrose and betaine from sugar beet based solutions and to the separation of sugars, e.g. xylose, from plant-based hydrolysates, for example.
摘要:
Strongly acidic cation exchangers with high mechanical, osmotic and oxidation stability can be prepared by sulfonating bead polymers formed from one or more vinylaromatic monomer(s), one or more crosslinker(s) and from 0.2 to 20% by weight of one or more vinyl ethers and/or vinyl esters.
摘要:
The invention relates to a method for the fractionation of molasses using a chromatographic simulated moving bed system with two or more loops in which the liquid flow can be effected in a system comprising at least two chromatographic partial packing material beds. In the method of the invention, product(s) are recovered during a process comprising one or more of the following phases: a feeding phase of molasses, an eluting phase and a recycling phase. The liquid present in the partial packing material beds with their dry solids profile can be recycled in the recycling phase in one or more loops comprising one or more partial packing material beds.
摘要:
D-Allose, a sweet non caloric sugar, is recovered from an aqueous solution containing at least on other monosaccharide by adsorptive separation using a calcium loaded ion exchange resin as the adsorbent.
摘要:
Sucrose which is found in molasses such as beet molasses or cane molasses may be selectively extracted therefrom by passing an aqueous solution of the molasses over a solid adsorbent such as activated carbon. The sucrose will be selectively adsorbed thereon and separated from the betaine and mineral salts, specifically potassium chloride, in the molasses. The sucrose is then removed from the adsorbent by treatment with a desorbent material comprising an alcohol. In applying the simulated moving bed countercurrent flow system to this separation, the presence of the alcohol in the adsorbent will seriously impede the adsorption of the sucrose. The present invention incorporates a water flush stream into such a system in a unique manner which, among other things, precludes the presence of alcohol in the adsorption zone.
摘要:
A METHOD AND APPARATUS FOR PURIFYING A SUGAR BEARING SOLUTION SUCH AS MOLASSES TREATES THE IMPURE SOLUTION WITH BAUXITE PRIOR TO THE PASSAGE THREOF TO AN ION EXCLUSION RESIN.