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38results about How to "Reduce degradation loss" patented technology

Environmentally-friendly paper making and pulping technique and system with high yield

The application of the invention provides an environmentally-friendly paper making and pulping technique with high yield, which comprises a raw material preprocessing stage, a physical fibrillation impregnating processing stage, an impregnating, steaming and bleaching three-section integrated pulping stage and a thickening and dewatering processing stage. An environmentally-friendly paper making and pulping system with high yield realizing the pulping technique comprises a stock cutter, a hammering and fibrillation screening dust remover, a washing dust remover, dewatering conveying equipment, a spiral steaming conveyor, a crashing, extruding and impregnating machine, a stirring and impregnating cabin, a pump pipe and a discharge pipe of a high-enriched steaming, bleaching and pulping all-in-one machine, wherein the pump pipe is connected to the high-enriched steaming bleaching pulping all-in-one machine; the discharge pipe of the high-enriched steaming, bleaching and pulping all-in-one machine is connected to a pulp cabin; the pump pipe of the pulp cabin is connected with a thickening and dewatering machine; the thickening and dewatering machine is output to the high-enriched pulping machine; the output of the high-enriched pulping machine is connected with a screening purifier and a thickening and squeezing machine in sequence. In the invention, the problems of high pollution, high energy consumption, serious shortage of paper making raw material and the like in present pulping and paper making industry can be solved fundamentally; rich plant fiber in the nature can be used, and the technical purposes of efficient bleaching, high yield, no black liquor and low energy consumption can be realized.
Owner:李刚荣 +1

Strengthening and regenerating system and method for carbon dioxide capturing solution

A strengthening and regenerating system for a carbon dioxide capturing solution comprises a regeneration tower, a reboiler, a supersonic generator panel, a supersonic controller, a pressure sensor, a liquid position sensor, and a temperature sensor; rich liquor from an absorption tower enters the regeneration tower from the top part of the regeneration tower, then flows to the bottom part of the regeneration tower, enters the reboiler, absorbs the thermal energy there, and then is returned to the regeneration tower; when the solution submerges the supersonic generator panel, according to the liquid position information obtained by the liquid position sensor, a vibrator in the supersonic generator panel under the liquid position is started to work, then the carbon dioxide in the liquid phase is promoted to evaporate from the liquid phase through a supersonic cavitation effect, then the carbon dioxide rises to the top part of the regeneration tower and forms a pressure; and according to the pressure value measured by the pressure sensor and the temperature value measured by the temperature sensor, the supersonic controller adjusts the output frequency and power of the vibrator in the supersonic generator panel. The system can accelerate the evaporation speed of the carbon dioxide in the solution, reduces the desorption temperature, reduces the external steam consumption, improves the absorption rate of carbon dioxide and the regeneration degree of the solution, and reduces the energy consumption of each unit of carbon dioxide.
Owner:HUANENG CLEAN ENERGY RES INST

Absorbing agent for catching or separating carbon dioxide

The invention relates to an absorbing agent for catching or separating carbon dioxide from gas mixture, which mainly comprises the components by weight percent: 10-50wt% of N-ethylethanolamine, 10-40wt% of tetramethylene sulfone and balance water. The absorbing agent adopts the N-ethylethanolamine as effective component, and the N-ethylethanolamine has high solubility for low-pressure carbon dioxide, good desorbing effect, lower reaction heat of absorption reaction and lower energy consumption for catching or separating the carbon dioxide; and as the 3-dimethyl amino-1-propyl alcohol has the functions of improving the desorbing effect and reducing the volatilization of water, so that the energy consumption of desorbing is further reduced. The absorbing agent can be used for catching or separating the carbon dioxide in various gas mixtures such as flue gas, refinery gas, natural gas, synthesis gas, shift gas, hydrogen preparation gas and the like.
Owner:TSINGHUA UNIV

High-yield environment-friendly papermaking and pulping process method and system

The invention provides a high-yield environment-friendly papermaking and pulping process method which includes a raw material pre-processing section, a physical threading immersion processing section, an immersing, steaming and bleaching integrated pulping section and a thickening and dewatering processing section. A high-yield environment-friendly papermaking and pulping system for achieving the pulping process method sequentially comprises a stock cutter, a hammer thread screening deduster, a washing deduster, a dewatering conveying device, a steaming spiral conveyor, a squeezing cracking and thread squeezing impregnator, a disperse impregnating device, a high-concentration cooking and bleaching pulping all-in-one machine, a pulp bin, a concentration dewaterer, a high-concentration stuff grinder, a screening purifier and a concentration presser according to the process route, wherein a pump pipe is connected onto the high-concentration cooking and bleaching pulping all-in-one machine, a discharging pipe of the high-concentration cooking and bleaching pulping all-in-one machine is connected to the pulp bin, a pulp bin pump pipe is connected with the concentration dewaterer, the output end of the concentration dewaterer is connected onto the high-concentration stuff grinder, and the output end of the high-concentration stuff grinder is sequentially connected with the screening purifier and the concentration presser. The high-yield environment-friendly papermaking and pulping process method and system fundamentally solve problems of high pollution and energy consumption, shortage of papermaking raw materials and the like existing in the papermaking industry, and achieve the technical purposes of efficient bleaching, high yield, no black liquor and low energy consumption by using abundant plant fibers in the nature.
Owner:丹东东方轻工机械有限公司

Absorbing solvent for capturing or separating carbon dioxide from gas mixture or liquid gas

The invention belongs to the field of chemical materials, in particular relates to an absorbing solvent for catching and separating carbon dioxide from gas mixture or liquefied gas. The solvent comprises 15 to 60 weight percent of 1-dimethylamino-2-propanol (DMA2P for short) and 40 to 85 weight percent of other components. The other components comprise one or more of monoethanol amine, normal propyl alcohol amine, hydroxyethyl piperazine, 2- methyl piperazine, water, physical solvent, inorganic salt or addition agents. The 1-dimethylamino-2-propanol has large solubility to the carbon dioxide, good desorption effect, lower reaction heat of absorption reaction and lower energy consumption to the catching and the separation of the carbon dioxide. Meanwhile, the 1-dimethylamino-2-propanol is a tertiary amine, has better molecule stability and can reduce the degradation loss of the solvent in the using process.
Owner:TSINGHUA UNIV

Sample extraction method for research on tissue sample metabolomics and lipidomics

The invention discloses a sample extraction method for research on tissue sample metabolomics and lipidomics. The sample extraction method for research on tissue sample metabolomics and lipidomics comprises the following steps: adding a trace amount of tissue sample into a pre-frozen methanol-aqueous solution in advance, performing low-temperature bead collision and homogenization, centrifuging totake supernatant for research on metabolomics, adding pre-frozen tert-butyl methyl ether into tissue residues, and homogenizing again and centrifuging for research on lipidomics. Hydrophilic and lipophilic endogenous metabolites can be extracted simultaneously through a trace amount of tissues and are applied to research on metabolomics and lipidomics correspondingly. Compared with the method reported by literatures, the method has the following advantages: extraction is conducted separately through two steps, so that the technical problems that lipid full spectrum coverage is difficult to realize by a single extraction system in the processes of extracting by a mixed solvent through one step and then extracting the hydrophilic and lipophilic metabolites through two-phase separation as well as part of the hydrophilic metabolites is distributed to a lipid extraction layer in the phase separation process are avoided; meanwhile MTBE extraction has higher lipid extraction efficiency and more convenient experimental operability than those of dichloromethane-methanol.
Owner:SHANGHAI MUNICIPAL CENT FOR DISEASE CONTROL & PREVENTION

Mixed absorbent for gathering or separating carbon dioxide

The invention relates to a mixed absorbent for gathering or separating carbon dioxide from a gas mixture, which mainly comprises the following components in percentage by weight: 21 to 45 percent of diethylethylenediamine, 5.0 to 9.9 percent of primary amine containing one nitrogen atom and / or secondary amine containing one nitrogen atom, and the balance of water. The absorbent has high solubility and good desorption effect on low-pressure carbon dioxide, simultaneously absorbs less reaction heat, and has low energy consumption for gathering or separating the low-pressure carbon dioxide; because the diethylethylenediamine is tertiary amine and has high boiling point and better molecular stability than the primary amine and secondary amine, so the degradation loss of a solvent in the using process can be greatly reduced. The mixed absorbent can be used for gathering or separating various normal-pressure gas mixtures, such as carbon dioxide in flue gas discharged from coal fired power plants, and enterprises in the steel, cement, petrochemical engineering and other industries.
Owner:TSINGHUA UNIV

Compound decarburization solution for removing carbon dioxide in natural gas and preparation method thereof

InactiveCN102757831AHigh absorption loadLess corrosiveProductsReagentsCo2 absorptionDefoaming Agents
Disclosed is a compound decarburization solution for removing carbon dioxide in natural gas and a preparation method thereof. The compound decarburization solution comprises, by weight, 28.0% to 55.0% of N- methyl diethanolamine, 4.0% to 12.0% of an activating agent, 0.1% to 2.0% of a corrosion inhibitor, 0. 02% to 0.2% of a stabilizing agent, and 0.01% to 0.1% of a defoaming agent, with the balance being water. The preparation method includes feeding nitrogen into a reaction still before preparation; setting the temperature of the reaction still, adding the N- methyl diethanolamine and the water and stirring the mixture; adding the activating agent, the corrosion inhibitor, the stabilizing agent and the defoaming agent into the reaction still; stirring the mixture till the mixture is uniform, and performing discharge to obtain the product compound decarburization solution. According to the compound decarburization solution for removing carbon dioxide in natural gas and the preparation method thereof, the preparation process is protected by the nitrogen; the compound decarburization solution has the advantages of being high in absorption load of carbon dioxide, low in corrosion, high in thermo-stability, little in degradation loss and low in regeneration power consumption, and capable of obtaining purified natural gas and high-purity carbon dioxide while used in the natural gas processing; the whole process is protected by the nitrogen in the preparation, and oxygen is prevented from contacting with the solution, accordingly, risks of solution degradation and ineffectiveness of the stabilizing agent are reduced, and the oxygen content and the corrosion of decarburization devices are decreased.
Owner:天津中油科远石油工程有限责任公司 +1

Method for reducing loss of anthocyan of blueberry fruit juice in processing course

The invention discloses a method for reducing loss of anthocyan of blueberry fruit juice in a processing course. The method comprises the following steps of (1) cleaning blueberries, and performing mashing to obtain blueberry slurry; (2) regulating the pH value of the blueberry slurry, adding zinc lactate, malic acid, glutathione, tea polyphenols and a grape seed extract to the blueberry slurry, and then adding complex enzymes; (3) after performing enzymolysis on the blueberry slurry, performing filtering, adding cane sugar, lactose, sodium citrate, trehalose, beta-cyclodextrin, arabic gum, xanthan gum and sodium carboxymethyl cellulose and performing allocation; (4) homogenizing the allocated fruit juice, and then performing vacuum degassing; and (5) sterilizing the degasses blueberry fruit juice and performing filling. In accordance with special functional components of the anthocyan in the blueberries, in the processing course of the blueberry fruit juice, in two respects that processing factors are controlled, and the self molecular structure stability is improved, the degradation loss of the anthocyan in the blueberries is reduced, the efficacy is reserved, the color deterioration is alleviated, the product quality is improved, and a blueberry fruit juice product high in anthocyan content is developed.
Owner:HANGZHOU ACAD OF AGRI SCI

Preparation method of N-(2-pyrazine carbonyl)-L-phenylalanine-L- leucine boracic acid

The invention provides a preparation method of bortezomib, namely N-(2-pyrazine carbonyl)-L-phenylalanine-L- leucine boracic acid. The method provided by the invention can enhance the productive rate and purity of the bortezomib and reduce the generation of impurities, is easy and convenient to operate and low in solvent dosage, achieves recrystallized products with high purity being more than 99% and is high in reproducibility and suitable for industrialized production.
Owner:深圳万乐药业有限公司

Method for efficiently saccharifying straw pulp fiber

ActiveCN101613728AReduce alkali consumptionHigh yield of dry matterFermentationFiberPre treatment
The invention relates to a method for efficiently saccharifying straw pulp fiber, comprising pre-treatment of straw pulp fiber and enzymolysis, wherein in the pre-treatment process, straw pulp fiber and aqueous alkali at a concentration of 0.1wt%-50wt% are mixed to be treated at the temperature of 70 DEG C-140 DEG C for 10-400 min; the weight ratio of the straw pulp fiber to the aqueous alkali is1:1-20.The method for efficiently saccharifying straw pulp fiber of the invention produces no harmful substance to enzymolysis and fermentation, reduces degradation loss of carbohydrate in biomass, improves raw material enzymolysis yield and effectively lowers production cost.
Owner:ANHUI BBCA FERMENTATION TECH ENG RES

Preparation method of Huoxiangzhengqi Oral Liquid

The invention discloses a method for preparing ageratum oral liquid. The active ingredients of most of prescription medicinal crops are extracted by using a membrane press filtration, cyclic extraction and separation integrated technology in place of a reflux method, a decoction method and a warm immersion method. A process flow can be simplified, the production period can be greatly shortened, energy can be saved, environmental protection and waste residue utilization can be facilitated, and the recovery rate of the active ingredients can be greatly increased.
Owner:TAIJI GRP CHONGQING FULING PHARM FACTORY CO LTD

Preparation method of salvianolic acid Y

The invention relates to a preparation method of salvianolic acid Y. The method comprises the following steps: step 1, salvianolic acid Y enrichment: taking a salvianolic acid extract, dissolving thesalvianolic acid extract with water, and adding the salvianolic acid extract solution into an MCI-GEL chromatographic column, conducting eluting with a 10%-20% ethanol aqueous solution, adjusting thepH value of the eluate, adding the treated eluate into an MCI-GEL chromatographic column, conducting eluting with 70-95% ethanol, recovering a solvent, and conducting concentrating to dryness to obtain a salvianolic acid Y enriched product; and step 2, fine separation: completely dissolving the salvianolic acid Y enriched product by a mobile phase with a mass-volume ratio of 2-3 times, conductingliquid phase separation by adopting dynamic axial pressurization, using an HPLC (High Performance Liquid Chromatography) method to detect and combine the eluates containing salvianolic acid Y, and conducting reduced-pressure concentration to obtain salvianolic acid Y single product, wherein the mobile phase adopts acetonitrile and a formic acid aqueous solution with a concentration of 0.01%.
Owner:TIANJIN TASLY ZHIJIAO PHARMA

Preparation method of compound Lonicera japonica granules

The invention belongs to the preparation of Chinese patent medicine and particularly relates to a preparation method of compound Lonicera japonica granules. The preparation method includes: preparing raw materials, performing water extraction, alcohol precipitation and vacuum drying, pelleting, and the like. The preparation method has the advantages that the problems that the prior art is long in production cycle, high in energy consumption, low in efficiency, poor in environment protection performance, complex in pelleting, and the like are solved, and the preparation method is low in effective component loss, short in process flow, low in production cost, low in energy consumption, and the like.
Owner:HEBEI GOGIN PHARMA

Novel preparation method and application of traditional Chinese medicine composition for treating cerebral infarction during acute stage and earlier restoration stage

The invention relates to the technical field of traditional Chinese medicines and in particular relates to a novel preparation method and application of traditional Chinese medicine composition for treating cerebral infarction during acute stage and earlier restoration stage. The production process is improved on the basis of the original prescription of Chinese patent CN200310114532.X, the leeches are subjected to superfine grinding, the salvia miltiorrhiza is totally subjected to CO2 supercritical extraction, and the medicinal compositions in the medicinal materials are effectively kept through the process. Compared with clinical research, the clinical curative effect of the product subjected to process improvement on stroke (cerebral thrombosis) is obviously superior to the curative effect of the original process product; and moreover, the prepared traditional Chinese medicine composition has the effects of resisting oxidation and eliminating radicals and has a positive effect of preventing brain neuron injuries, and according to the pharmacodynamics study, the traditional Chinese medicine composition has an obvious curative effect on aged dementia (AD).
Owner:SHANDONG PHOENIX PHARM CO LTD

Preparation method of yinhuang particles

The invention belongs to preparation of Chinese patent medicines and particularly relates to a preparation method of yinhuang particles. The preparation method comprises technological steps as follows: material preparation, preparation of clear paste of honeysuckle flowers, preparation of baical skullcap root concentrate, vacuum drying, granulation and the like. With the adoption of the preparation method, the problems of long preparation cycle, high energy consumption, low efficiency, poor environment-friendliness and complicated granulation process as well as problems that intermediate products are not easy to store and prone to bacterial contamination and the like in the prior art are effectively solved. The method has the advantages of little loss of medicinal composition, short technological process, low preparation cost and low energy consumption; the intermediate products are easy to store and low in bacterial contamination rate.
Owner:HEBEI GOGIN PHARMA

Expanded graphite and poly alpha-olefin composite oil drag reducer blending synthesis method

The invention relates to an expanded graphite and poly alpha-olefin composite oil drag reducer blending synthesis method. According to the technical scheme, the method comprises the following preparation methods that 1, expanded graphite is made; 2, the expanded graphite is added into n methyl pyrrolidone aqueous solution, then anionic surfactant drips proportionally, stirring is conducted at theroom temperature, and then the mixture is put into an ultrasonic generator for a period of time; 3, the mixture is put into a vacuum drying box to be dried and is refined into modified expanded graphite through ultrasonic grinding; 4, poly alpha-olefin solid is put into liquid nitrogen to be vitrified; and 5, the modified expanded graphite powder is added into the poly alpha-olefin solid, and themixture is stirred into powder and then is made into a drag reducer. The blending synthesis method has the beneficial effects that the process is simple, the processed expanded graphite is added onlyin the smashing process of the poly alpha-olefin, no reaction steps or severity are increased, and the synthetic composite drag reducer keeps an anti-drag effect and has certain anti-shear ability.
Owner:SHENGLI COLLEGE CHINA UNIV OF PETROLEUM

Cellulose nanofibril suspension and preparation method thereof

The invention provides a cellulose nanofibril suspension and a preparation method thereof, and the method comprises the following steps: step 1, swelling wood fibers in a polar solvent for 2-4 hours to obtain a mixed system A; step 2, sequentially adding oxalic acid, sulfuric acid and potassium permanganate the mixed system A, performing oxidation treatment for 4-6 h, and obtaining a mixed system; and step 3, washing the mixed system B, centrifuging, and separating supernatant liquid to obtain the cellulose nanofibril suspension. According to the method, the complete lattice structure of the cellulose is reserved as far as possible, the problem of uniform dispersion of the cellulose nanofibrils in part of the organic solvent can be solved while the size of the cellulose nanofibrils can be effectively adjusted and controlled, and continuous operation can be realized in the whole process.
Owner:SHAANXI UNIV OF SCI & TECH

Fertilizer for improving broccoli yield and quality and preparation method thereof

The invention provides a fertilizer for improving broccoli yield and quality and a preparation method thereof. The preparation method comprises the following steps: firstly, mixing porous micro-powderprepared from corn straw powder with cottonseed hull powder to obtain mixed powder, spraying and granulating the mixed powder and polyglutamic acid to prepare particles, pouring the particles into anaqueous solution prepared from an inorganic fertilizer component, mixed bacterial powder and a corn-enteromorpha clathrata mixed fermentation product, and carrying out dipping treatment, and finally,performing vacuum freeze-drying to obtain the fertilizer, the fertilizer is particularly suitable for broccoli planting, the broccoli yield is effectively increased, the content of glucoraphanin, vitamin C and the like of the mature broccoli is greatly increased, and high-quality broccoli is harvested.
Owner:崔艳兰

An integrated processing method and equipment for superheated steam blanching and combined drying

The invention belongs to the technical field of agricultural product processing, and specifically discloses a superheated steam blanching and combined drying integrated processing method and superheated steam blanching and combined drying integrated processing equipment. The equipment comprises an integrated combination processing machine body, a pressure pulsation generation system, a superheated steam blanching system, a hot wind drying system, a vacuum drying heating system, an automatic control system and other parts. According to the present invention, a material is firstly subjected to vacuum pulsation superheated steam blanching enzyme-inactivation color-protection and sterilization pre-treatment in the integrated processing equipment, and then hot wind vacuum combination drying is performed; with the method and the equipment, the problems that the chemical residue exists in the use of the chemical enzyme-inactivation color-protection method in the hot wind vacuum combination drying processing pre-treatment, the cost of the processing system is significantly increased by additionally arranging the independent physical blanching device, the material is required to be taken out after the blanching and the material re-distribution is required to be performed in the drying device, and the like can be solved; with the method and the equipment, the sterilization treatment in the processing process can be simultaneously completed, the drying time can be effectively shortened, the quality of the product is good, and other characteristics can be provided; and the method and the equipment are suitable for the blanching and drying processing of most of fruits and vegetables and Chinese herbs.
Owner:陕西杰睿客信机电设备有限公司

Xinkeshu capsule preparation method

InactiveCN106177024ASave resourcesTo overcome the loss of active ingredients, the extract is not easy to dry and other problemsMetabolism disorderCapsule deliverySalvia miltiorrhizaMedicine
The invention belongs to preparation of Chinese traditional patent medicine and particularly relates to a Xinkeshu capsule preparation method. The Xinkeshu capsule preparation method includes: preparing materials; subjecting pseudo-ginseng and radix aucklandiae to superfine grinding; preparing mixed thick paste; preparing salvia miltiorrhiza thick paste; performing vacuum drying to make into capsules and the like. With the method, problems about long production cycle, high energy consumption, low efficiency, poor environment friendliness, complex pelletizatioin, difficulty in storing intermediate goods, proneness to contamination and the like in the prior art are effectively solved, and the Xinkeshu capsule preparation method has the advantages of less loss of effective components, short technological process, low production cost, low energy consumption, easy storage of the intermediate goods, low contamination rate and the like.
Owner:HEBEI GOGIN PHARMA

Absorption solvent used for catching or separating carbon dioxide

The invention belongs to the field of chemical materials, and particularly relates to an absorption solvent which is used for collecting or separating carbon dioxide from gas mixture or liquefied gas. The solvent comprises 3-dimethylamino-1-propanol (abbreviated as DMA1P) with a content range of 10-70 wt% and other components with a total content range of 30-90 wt%, wherein, the other components comprise one or more of monoethanol amine, n-propanol amine, hydroxyethyl piperazine, water, physical solvent, inorganic salt or auxiliary agent. The solubility of carbon dioxide in 3-dimethylamino-1-propanol is high and the deabsorption effect is good; simultaneously the reaction heat of the absorption reaction is lower and the energy consumption for collecting or separating carbon dioxide is lower; meanwhile, 3-dimethylamino-1-propanol is a tertiary amine, the carbon chain is a linear chain, six-membered ring with better molecular stability can be formed through hydrogen bond, and the degradation loss of solvent in the use process can be reduced substantially.
Owner:TSINGHUA UNIV

A method for separating and extracting highly active lignin from coniferous wood

ActiveCN111286039BEasy extractionInhibition of repolymerizationLignin derivativesCelluloseFiber
The invention belongs to the technical field of biomass refining and resource utilization, and relates to a method for separating and extracting highly active lignin from coniferous wood. Using (p-TsOH) / ClO 2 The system handles raw materials. The present invention passes p -TsOH / ClO 2 System separation and extraction of coniferous lignin with high yield and high activity, p ‑TsOH and ClO 2 The synergistic effect can effectively promote the extraction of high-activity lignin from coniferous wood, and inhibit the repolymerization of lignin monomers and the formation of low-activity C‑C linkages. The lignin product obtained by the invention is easy to process and transform; the treatment condition is mild, the selectivity of chlorine dioxide to lignin reaction is high, the degradation loss of polysaccharide is small, the method is easy to implement, and the process is simple and efficient. The fiber quality after lignin extraction is good, and the yield of synthetic cellulose is high, which can be used as an excellent biomass energy material.
Owner:QILU UNIV OF TECH

A method for extracting and purifying beet red pigment from concentrated red beet juice

The invention discloses a method for extracting and purifying beet red pigment from concentrated red beet juice. The method comprises the following steps: (1) diluting the concentrated red beet juice with citric acid water of pH 3 to pH 5 to a Brix degree of 4° Bx~6°Bx, to obtain the red beet concentrated juice dilution; (2) Put the red beet concentrated juice dilution on the mixed resin column, and perform elution, separation and purification to obtain the beet red eluent; (3) The beet red eluate The red eluate is concentrated to a Brix degree of 20°Bx-30°Bx on a water-bath single-effect concentrator, and spray-dried to obtain beet red powder. When the method of the present invention removes the sugar in the red beet juice, it also removes other impurities such as inorganic salts therein, which improves the production efficiency; moreover, the low-temperature vacuum concentration of the water-bath single-effect concentrator reduces the degradation of raw materials, and can obtain A beet red product with a higher color price.
Owner:天津市尖峰天然产物研究开发有限公司

Method for separating and extracting high-activity lignin by taking coniferous wood as raw material

ActiveCN111286039AEffective activation of ligninEasy to separateLignin derivativesCelluloseFiber
The invention belongs to the technical field of biomass refining and recycling, and relates to a method for separating and extracting high-activity lignin by taking coniferous wood as a raw material.A (p-TsOH) / ClO2 system is adopted to treat the raw material. According to the method, high-yield and high-activity coniferous lignin is separated and extracted through the p-TsOH / ClO2 system, extraction of the coniferous high-activity lignin can be effectively promoted through the synergistic effect of p-TsOH and ClO2, and repolymerization of lignin monomers and generation of low-activity C-C connecting bonds are inhibited. The obtained lignin product is easy to process and convert; the method has the advantages of mild treatment conditions, high selectivity of chlorine dioxide to lignin reaction, small degradation loss of glycan, simple process and high efficiency, and is easy to implement. After lignin is extracted, the fiber quality is good, the yield of holocellulose is high, and the lignin can be used as an excellent biomass energy material.
Owner:QILU UNIV OF TECH
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