摘要:
There is provided a method for the production of sucralose from a feed stream resulting from the chlorination of a sucrose-6-acylate in a reaction vehicle, said feed stream comprising a sucralose-6-acylate, the reaction vehicle, and by-products including high molecular weight coloured material, said method comprising: deacylation of the sucralose-6-acylate by treatment with a base to afford sucralose, and, before or after said deacylation, removal of the reaction vehicle and isolation of the sucralose characterised in that immediately before the removal of the reaction vehicle, the reaction stream is subjected to a precipitation step comprising treatment with a metal or ammonium hydroxide and carbon dioxide to form a precipitate of the corresponding metal or ammonium carbonate in which at least a portion of said high molecular weight coloured material is trapped, followed by separation of said precipitate.
摘要:
We disclose a method of extracting an alcohol or furan from a predominantly liquid stream comprising the alcohol or furan, comprising removing cations from the predominantly liquid stream comprising the alcohol or furan, using a cation-exchange resin; removing anions from the predominantly liquid stream comprising the alcohol or furan, using an anion-exchange resin; and recovering alcohol or furan from the predominantly liquid stream comprising the alcohol or furan, using either a vapor permeation membrane, a perevaporation process, or both.
摘要:
A corn wet-milling process comprises steeping corn kernels in an aqueous liquid, which produces softened corn; milling the softened corn in a first mill, which produces a first milled corn; separating germ from the first milled corn, thereby producing a germ-depleted first milled corn; milling the germ-depleted first milled corn in a second mill, producing a second milled corn; separating the second milled corn into a first starch/protein portion that comprises starch and protein and a first fiber portion that comprises fiber, starch, and protein; milling the first fiber portion in a third mill, which produces a milled fiber material that comprises fiber, starch, and protein; separating at least some of the starch and protein in the milled fiber material from the fiber therein, producing a second fiber portion that comprises fiber and starch and a second starch/protein portion that comprises starch and protein; and contacting the second fiber portion with at least one enzyme to convert at least some of the starch therein to dextrose. The converted material is screened using one or more screens to separate the fiber from the liquor. The liquor can be fermented to ethanol, or refined to dextrose. The fiber can be pressed and dried as an animal feed.
摘要:
A process including steeping cereal kernels in an aqueous liquid, producing softened cereal; milling the softened cereal, producing a milled cereal comprising germ, protein, starch, and fiber; separating at least some of at least one material selected from the group consisting of germ, starch, and protein from the milled cereal, producing at least one of germ, starch, and a first protein portion, and also producing a first fiber portion that comprises fiber and starch, and a light steep water that comprises protein; separating at least some protein from the light steep water, producing a second protein portion and a process water that comprises protein; converting at least some of the starch in the first fiber portion to saccharides; separating at least some of the saccharides from the first fiber portion, producing saccharides and a second fiber portion that comprises fiber; and burning at least some of the fiber from the second fiber portion, producing a flue gas and a first quantity of energy; wherein the process further comprises at least one step selected from the group consisting of least partially powering at least one previous step with the first quantity of energy; and drying at least one separated material selected from the group consisting of the germ, the starch, the first protein portion, the second protein portion, and the saccharides with the flue gas, producing a dried separated material and a dryer exhaust. In one further embodiment, the process further includes digesting anaerobically the biologically available organic residues from the process water, producing a biogas and a final waste water. In a still further embodiment, the process further includes burning the biogas to produce a second quantity of energy and at least partially powering at least one previous step with the second quantity of energy.