170results about "Sugar juice purification" patented technology

The present invention provides an apparatus and a method for conversion of cellulosic material, such as chopped straw and corn stover, and household waste, to ethanol and other products. The cellulosic material is subjected to continuous hydrothermal pre-treatment without addition of chemicals, and a liquid and a fibre fraction are produced. The fibre fraction is subjected to enzymatic liquefaction and saccharification. The method of the present invention comprises:

• • performing the hydrothermal pre-treatment by subjecting the cellulosic material to at least one soaking operation, and conveying the cellulosic material through at least one pressurised reactor, and subjecting the cellulosic material to at least one pressing operation, creating a fibre fraction and a liquid fraction;
  • selecting the temperature and residence time for the hydrothermal pretreatment, so that the fibrous structure of the feedstock is maintained and at least 80% of the lignin is maintained in the fibre fraction.

Embodiments of the present invention overcome the well-known recalcitrance of lignocellulosic biomass in an economically viable manner. A process and a system are provided for the efficient fractionation of lignocellulosic biomass into cellulose, hemicellulose, and lignin. The cellulose and hemicellulose thus obtained are highly amorphous and can be readily converted into highly concentrated mixtures of five and six carbon sugars using known methods. Typical yields of sugars exceed 100 grams of sugars per liter of sugar solution. Other products, such as alcohols, can easily be prepared according to methods of the invention. The modest process conditions and low solvent/solid ratios of some embodiments of the invention require relatively low capital and processing costs.

The present invention relates to a process for the production of xylose and dissolving pulp from xylan-containing biomass, such as hardwood. The invention is based on prehydrolysis of the xylan-containing biomass with SO₂ in specified conditions, followed by chromatographic fractionation, nanofiltration or precipitation crystallization of the xylose-containing prehydrolyzate to obtain a xylose product having a xylose content of at least 55% on DS. The dissolving pulp obtained from the process can be used for example for the production of viscose.

An acid recovery system used in a hydrolysis operation includes a chromatographic unit to provide initial separation of sugar and acid. The sugar product provided by the chromatographic unit is processed to produce higher value products, such as ethanol. The remaining acid is contaminated by sugar. A nanofiltration unit containing a nanofilter membrane processes the sugar contaminated acid. The acid is allowed to permeate across the nanofilter membrane while sugar is rejected. The permeate is provided to a conventional acid recovery system and recycled for use in the hydrolysis process.

The present invention is directed to a method comprising a multistep process for recovering one or more monosaccharides from a solution containing at least two monosaccharides selected from the group consisting of rhamnose, arabinose, xylose and mixtures thereof by using chromatographic separation comprising at least one step, where a weak acid cation exchange resin is used for the chromatographic separation.

A process for the fractionation of oilseed cakes and meals (e.g. rapeseed cake, soybean meal, and cottonseed cake) is disclosed. This invention describes a fractionation process, in which the said cake or meal is subjected to enzymatic treatment with polysaccharidases with intermittent wet milling, followed by heat treatment to facilitate separation of insoluble from soluble phase by centrifugal forces. Sequential centrifugation and ultrafiltration steps are carried out in order to yield a fibre-rich fraction, at least three protein-rich fractions, in the case of oilseed cakes at leas one emulsified oil fraction, a sugar-rich fraction, and a phytate-rich fraction. This invention also describes the use of the above-mentioned fractions in food, feed, nutraceutical and pharmaceutical applications.

The invention relates to a method for producing raw juice brown sugar and belongs to the technical field of food processing. The invention aims at solving the technical problem of providing a method for producing raw juice brown sugar with higher quality. The method for producing the raw juice brown sugar comprises the following steps: a, juicing sugarcane, and sieving, so as to obtain raw juice after sieving and screening residue; b, heating the raw juice after sieving, eliminating formed floating condensation products, so as to obtain clear juice, and filtering, so as to obtain filtrate I; c, standing the filtrate I for 2-3 hours, and removing fine silt impurities at the bottom layer, so as to obtain sugar juice clear liquid; d, evaporating and concentrating the sugar juice clear liquid obtained in the step c into syrup with the brix of 85-90 degree Bx, then carrying out sugar boiling to obtain massecuite, sanding, and moulding, so as to obtain lump sugar; or evaporating and concentrating the sugar juice clear liquid obtained in the step c into clear syrup with the brix of 55-60 degree Bx, and then carrying out sugar boiling at normal pressure, so that liquid brown sugar with the concentration of 68-78 degree Bx is obtained.

A system and method for extracting C₅ sugars including pentose and/or C₆ sugars including hexose from a slurry of cellulosic material comprising cellulose, water, and optionally acid.

This invention relates to a composite clarification agent used in sugar production. The composite clarification agent is composed of: polymerized AlCl3, organic polymeric materials (including chitosan, chitosan quaternary ammonium salt and dimethyl diallyl ammonium chloride), and ultra-fine powder (including perlitic powder, diatomite and clay) at a ratio of (45-90) :( 1-10) :( 5-50). The composite clarification agent has high electrical neutralization and bridge linkage performances, and has such advantages as low cost, rapid solid-liquid separation and no toxicity. The composite clarification agent is suitable for clarifying mixed juice, filtrate and syrupy in sugar production. The method has such advantages as abundant raw materials, simple process and easy operation.

An efficient process for saccharifying lignocellulosic biomass in concentrated aqueous solutions of certain bromine salts, particularly LiBr and CaBr₂. Real lignocellulose biomass, such as corn stover, switchgrass, waste paper, hardwood, and softwood, can be hydrolyzed without the need for any prior pretreatment. Complete saccharification of both cellulose and hemicellulose is achieved within 5-200 min at temperatures ranging from about 100 to about 160° C. Residual lignin is readily separated from product sugars by filtration or centrifugation and can be used to prepare beneficial coproducts. The bromine salt can be recovered and separated from product sugars (predominantly monosaccharides) by any art-known method and in particular solvent extraction, anti-solvent precipitation, ion-exclusion chromatography and/or ion-exchange chromatography can be employed. Hydrolysis product containing sugars can be employed for in fermentation for the production of value added products or useful fuels.

The present invention relates to methods of processing lignocellulosic material to obtain hemicellulose sugars, cellulose sugars, lignin, cellulose and other high-value products. Also provided are hemicellulose sugars, cellulose sugars, lignin, cellulose, and other high-value products.

The invention discloses a floating method for A-wash remelting brown granulated sugar, in the method, A-wash is added while remelting brown granulated sugar to enable the purity of mixed syrup to reach or near the purity of rough syrup, and then the mixed syrup is treated by the syrup floating method. Not only the product quality is guaranteed, the color value is lowered and reducing sugar, color elements and impurities are removed, but also the back boiling amount of low purity materials is increased, the rearward shift of the materials is reduced, the yield and the purity of waste molasses are effectively lowered to achieve the purposes of improving the yield of white granulated sugar, increasing the product recovery and improving the economic benefits of the sugar factories.

A method for clarifying the juice mixture obtained by squeezing the sugar-contained crops (sugar cane, sweet sorghum, etc) features use of the composite bentone-chitosan flocculant. Its filtered mud can be used as organic fertilizer.

The invention relates to extracts, in particular non-nutrient phytochemicals, form sugar cane or sugar beet waste products, such as molasses, sugar mud and bagasse, which have Glycemic Index (GI) lowering properties and their use as sweeteners and in foods containing sugar.

The invention relates to a process for producing high-safety white granulated sugar. The process comprises the following steps of squeezing sugarcane to obtain a mixed juice, pre-liming the mixed juice until the pH value is 6.5, carrying out once heating on the mixed juice until the temperature is 60-65 DEG C, adding lime milk until the pH value is 11, adding phosphoric acid and a polyacrylamide flocculating agent so as to obtain a clear juice, carrying out separation by utilizing an ultrafiltration membrane system, carrying out concentration by using a nanofiltration membrane system, carrying out decoloration by utilizing anion exchange resin, carrying out desalination by utilizing cation exchange resin, and evaporating to obtain a finished product. According to the process, a low-temperature strong-base process is combined with membrane separation, membrane concentration and ion exchange techniques so as to produce sulfur-free organic sugar, so that the problems of existence of sulfur in the product, complex process procedure, low production efficiency, sugar yield and clear juice clarity, serious environmental pollution, low economic benefit and the like in the prior art are solved.

A process for manufacturing of sugar products having desired levels of specific phytochemicals comprising the steps of: preparing a primary sugar product; analysing said primary sugar product for its phytochemical profile using an analytical method selected from the group consisting of near infrared spectroscopy, electrical conductivity, and combinations thereof; comparing said profile; treating said primary sugar product, if required, to achieve a final sugar product having desired levels of specific phytochemicals.

The invention discloses a pH value measurement and control device based on a CAN bus gateway and a measurement and control method thereof. A remote monitoring computer visits the embedded type Web server of an embedded type CAN bus gateway by IE browser; the embedded type CAN bus gateway visits the pH measurement and control device by a CAN bus and requests real time data detected by the pH measurement and control device; the requested data are returned and sent to the CAN bus gateway by the CAN bus and are transmitted to the IE browser of the remote monitoring computer so as to display through a Ethernet by the web page of the Web server of the embedded type CAN bus gateway; at the same time, the remote monitoring computer displays page by IE browser and sends a control instruction to the pH measurement and control device through an Ethernet communication port, the embedded type CAN bus gateway and the CAN bus in regular turn so as to control the action of an electromagnetic valve and adjust the pH value of a detecting object. A production field infranet and an enterprise information network are interconnected by the method, which can effectively improve production efficiency, intellectualized monitoring level and the network management level of the enterprise.