172results 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 invention relates to a production method of high-quality sugar, specifically to an improvement of a technology of sugar refinement and purification. High-quality white granulated sugar products are obtained after sugar canes are torn, pressed, cane juice is defecated, mixed juice is heated, a cane sugar complex auxiliary agent is added, the mixed juice is stirred up, floating juice is heated, sedimentated and vaporized, phosphoric acid and the cane sugar complex auxiliary agent are added, syrup is stirred up, the process of honey separation is carried out, the mixture is boiled, refined, crystallized, dried and packed. As the method of the invention adopts a low-temperature technology and a floating treatment method of adding the phosphoric acid, lime and the cane sugar auxiliary agent to lead the floating juice to reach or exceed the effect of the floating juice by original traditional technology, and utilizes a syrup floating principle and a scruff repressing method to substitute the sediment, filtration and stoving technology in the prior art, and cancels such technologies and equipment thereof as filtration, neutralization and sulfur dioxide gas system, retention time in cane juice production process is shortened, sulfur is used as a clarifier during the whole technical process, and sugar without sulfur is produced, thus improving product quality as well as reducing cost.

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.

An improved process for the production capacity and feedstock handling flexibility of a simulated moving bed adsorptive separation process by introducing a second feed stream to the adsorbent chamber comprising a feed material of a different concentration of the desired compound than the concentration of the desired compound in the first feed material stream. The introduction of this second feed material stream may be performed at any location on the adsorbent chamber between (i) a transfer point located immediately upstream of the point of the raffinate material stream withdrawal from the adsorbent chamber to (ii) a transfer point located immediately downstream of the point of extract material stream withdrawal from the adsorbent chamber. A recycle stream may be introduced into the system at a location having a concentration similar to the concentration of the first feed material stream.

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.

The present invention discloses a means to improve the production capacity and feedstock handling flexibility of a simulated moving bed adsorptive separation process by introducing a second feed stream to the adsorbent chamber, such second feed stream comprising a feed material of a different concentration of the desired compound than the concentration of such desired compound in the first feed material stream. The introduction of this second feed material stream may be performed at any location on the adsorbent chamber between (i) a transfer point located immediately upstream of the point of the raffinate material stream withdrawal from the adsorbent chamber to (ii) a transfer point located immediately downstream of the point of extract material stream withdrawal from the adsorbent chamber. The specific transfer point used for the introduction of the second feed material stream will depend upon the concentration of the desired component in the second feed material stream.

The present invention relates to a ready-to-dilute sugarcane juice beverage powder and a process for preparing the same and more particularly, the present invention describes a ready-to-dilute sugarcane juice beverage powder containing 80 to 95% by wt. dry sugarcane juice, 5 to 15% by wt. acacia pulvis, 0.01 to 0.10% by wt. of a heteropolysaccharide, 1-2% by wt. of one more anti-caking agents and 0.1 to 0.5% by wt of food preservatives and optionally 0.05 to 0.5% by wt. sodium alginate and a process for the same using a vacuum shelf dryer.

Provided is a method for producing a sugar liquid using a cellulose-containing biomass as the starting material. Sugar liquid having a very low fermentation-inhibiting substance content is produced by a method comprising (1) a step in which a cellulose-containing biomass is hydrolyzed to produce an aqueous sugar solution and (2) a step in which the resulting aqueous sugar solution is filtered through a nanofiltration membrane and / or reverse osmosis membrane, the pure sugar liquid is recovered from the unpermeated side, and the fermentation-inhibiting matter is removed from the permeated side.

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 sugarcane juice clarifying method. The method comprises the steps of: sequentially performing pre-liming, primary heating, foam making and air-floating separation on mixed juice which accounts for 30-95% of the total amount of mixed juice to obtain floating clear juice; mixing the rest mixed juice with the floating clear juice to obtain a mixed clear juice; and secondarily heating the mixed clear juice, stoving and neutralizing the mixed clear juice, heating the neutralized juice, and rapidly settling the neutralized juice to obtain clear juice, wherein the mixed juice is sugarcane juice obtained by the work procedure of pressing sugarcanes. The air-floating separation of part of mixed juice is combined with the rapid settlement of the rest of the mixed juice, the staying time of the sugarcane juice can be shortened, the remove rate of the non-sugar ingredient is increased, the pH value of the clear juice is stable, the phenomena of 'bottom reversing' of a settlement tank and 'cane sugar conversion' are avoided, the production cost is saved, the environment pollution is reduced and the product quality is improved.

The invention discloses an air floatation lustration method of sugar juice. Nitrogen is used as foaming air supply instead of air; thin juice (such as mixed juice, diffusion juice, neutral juice, clear juice and filtered juice) and concentrated sugar juice (such as syrup and molasses) in a sugar-refinery are processed through floatation lustration. The lustration method solves the problems that oxygen generated in the air floatation lustration method which takes the air as the foaming air supply has the oxidation encolouration side effects on the phenols in the sugar juice, the intensity of sulfitation is reduced, the sugar juice is fermented under the low temperature, etc., the sugar juice with better quality is obtained, and the product quality of the sugar-refinery is increased.

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 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.

The invention discloses a cane sugar manufacture production system. The production system is characterized by comprising a cleaning system, a discoloring system, an evaporation system, a sugar boiling system and a purging and drying system; the system device comprises a pipeline filter, a mixed juice tank, a mixed juice pump, a static mixer, a heater, a rapid settling basin, a dosing storage tank, a filter press, a falling film evaporator, a condenser, a discoloring column, a bag filter, a sugar boiling crystallizing tank, a syrup tank, a help-crystallization box, a purging box, a conveyor, a drying machine, a gas-liquid separator, a honey jar, a clear juice pump, a syrup pump, a circulating pump and a vacuum pump. According to the cane sugar manufacture production system, a stove drying system and a carbonation system in the original sugar refining design are canceled, a novel process is adopted, novel industrial equipment is introduced, and the system can serve as a scientific research platform for performing a novel cane sugar manufacture process or an industrial production line for producing raw sugar, primary white granulated sugar, high-grade sugar and refined 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.