274 results about "Furfural" patented technology

To provide an alcoholic beverage containing Brown spirits and water-soluble dietary fiber, and excellent in easiness to drink and flavor like Brown spirits.SOLUTION: An alcoholic beverage comprising Brown spirits, a water-soluble dietary fiber, and one or more selected from the group consisting of ethylcaprate and furfurals; the alcoholic beverage described above, wherein the concentration of ethylcaprate is 0.02 to 0. 20ppm or the concentration of furfurals is 0.05 to 0. 50ppm; and a method for improving the taste of an alcoholic beverage comprising Brown spirits and a water-soluble dietary fiber, the method comprising adding one or more selected from the group consisting of ethylcaprate and furfurals.SELECTED DRAWING: None

The purpose of the present invention is to provide a novel beer-flavored non-alcoholic beverage in which flavor richness, and the harshness and astringency in the aftertaste are improved. According to the present invention, provided is a beer-flavored non-alcoholic beverage containing furfural and / or 5-methyl furfural, wherein the furfural concentration is 0.02 ppm to 70 ppm, the 5-methyl furfural concentration is 0.01 ppm to 70 ppm, and a real extract is 2.0 mass% or more. The present invention is advantageous in that, by containing furfural and / or 5-methylfurfural within a predetermined concentration range in a beer-flavored non-alcoholic beverage, it is possible to provide a beer-flavored non-alcoholic beverage in which flavor richness, and the harshness and astringency in the aftertaste are improved, and it is possible to meet diverse preferences and needs of consumers.

The application discloses a method for synthesizing high-concentration furfuryl alcohol by using a double-enzyme coupling method, and the method comprises the following steps: mixing alcohol dehydrogenase freeze-dried bacterial powder and glucose dehydrogenase freeze-dried bacterial powder to serve as a catalyst, using furfural as a substrate, using glucose as a co-substrate, using NADP + or NAD + as a coenzyme, using a buffer solution with a pH value of 4-9 as a reaction medium to form a reaction system, and reacting completely under the condition of 20-50 DEG C and 400 rpm, then separating and purifying the reaction liquid to obtain furfuryl alcohol. The biological catalytic system is suitable for furfural with a concentration higher than 500 mM, and 100% conversion of 500 mM can be realized within 10 hours. The substrate continuous flow process is further used to eliminate the inhibition of aldehyde substrates on the biological catalyst, the concentration of the product can reach 1500 mM, and the highest space-time yield can reach 235 g / (L.d).

The utility model discloses a furfural residue utilization system which comprises a hydrolysis kettle, a residue storage warehouse, a stokehole stock bin, a drying flue, a crusher, a vibrating screen, a furnace top gas-residue cyclone separator, a boiler, a bag-type dust collector, an air preheater, an induced draft fan, a desulfurizing tower, a demister, a denitration device and a chimney, a slag discharging opening of the hydrolysis kettle is communicated with an inlet of the slag storage warehouse, a discharging opening of the slag storage warehouse is communicated with a feeding opening of the stokehole stock bin, a discharging opening of the stokehole stock bin is communicated with a feeding opening of the spiral conveyor, a discharging opening of the spiral conveyor is communicated with a feeding opening of the drying flue, and a discharging opening of the drying flue is communicated with a feeding opening of the crusher. A discharging port of the crusher is communicated with a feeding port of the vibrating screen, an undersize product outlet of the vibrating screen is communicated with a feeding port of the furnace top gas-slag cyclone separator, and a discharging port of the feeding port of the furnace top gas-slag cyclone separator is communicated with a fuel inlet of the boiler. According to the furfural residue recycling device, furfural residues can be efficiently treated, resource utilization of the furfural residues is achieved, and the combustion efficiency of the boiler is guaranteed.

The application discloses a nitrogen-doped carbon-coated three-metal catalyst and a preparation method and application thereof, and belongs to the field of catalyst preparation and application. The method adopts sucrose, melamine and metal salt as low-cost raw materials, and forms an alkaline environment with the assistance of sodium hydroxide. In the environment, melamine is hydrolyzed into cyanuric acid, which is complexed with sucrose metal ions to form a stable supramolecular aggregate precursor containing metal, and then realizes effective encapsulation of the metal in a high-temperature pyrolysis process. The synergistic effect of the three metal elements Co, Ni and Zn significantly improves the performance of the catalyst, so that CoNiZnO@NC-600 not only exhibits high conversion rate (98.4%) and selectivity (99%) in the reaction of hydrogenation conversion of furfural to furfuryl alcohol, but also has excellent cycle stability, thereby providing a new efficient method for the hydrogenation conversion of biomass-derived compounds.

The invention discloses a preparation method of a metal organic framework catalyst and application of the metal organic framework catalyst in biomass furfural hydrogenation, and belongs to the technical field of catalytic hydrogenation. The preparation method of the metal organic framework catalyst comprises the following steps: S1, dissolving cobaltous acetate, L-glutamic acid and phosphomolybdic acid in distilled water to obtain a solution marked as a solution A; dissolving 1, 3, 5-benzenetricarboxylic acid (BTC) in ethanol to obtain a solution B, pouring the solution B into the solution A, stirring, and centrifuging to collect a precipitate; and S2, calcining the precipitate in an inert atmosphere to obtain the metal organic framework catalyst. The specific steps of applying the catalyst to the furfural hydrogenation reaction are as follows: adding the prepared catalyst and furfural into deionized water, performing heating and pressurizing reaction through a hydrogenation reaction kettle to obtain a solution, extracting the solution with ethyl acetate, and performing GC quantitative detection on the product after the extraction reaction. The method is mild in reaction condition, has an efficient furfural hydrogenation effect, and can completely convert FFA within 2 hours under the condition that 50 mg of catalyst is added.

The application discloses a saline-alkali soil improvement method and belongs to the technical field of saline-alkali soil improvement. The method comprises the following steps: in a screw extruder, humic acid and acrylic acid are grafted and polymerized in a reaction section to form humic acid grafted acrylic acid polymer; N-[2-(2-methoxy-5-nitro-phenoxy)ethyl]pyridine, [2-(3,4-dichlorophenoxy)-ethyl]hexadecyl diethyl ammonium bromide and furfural residue are sequentially added at the opening of a conveying section, and after passing through a mixing section, the mixture is extruded and granulated to obtain a conditioner; according to weight parts, the furfural residue is 70-90 parts, the humic acid grafted acrylic acid polymer is 10-25 parts, and the N-[2-(2-methoxy-5-nitro-phenoxy)ethyl]pyridine and [2-(3,4-dichlorophenoxy)-ethyl]hexadecyl diethyl ammonium bromide are 1-5 parts. The conditioner is applied to saline-alkali soil by being scattered in the soil during ploughing or being applied to the soil by hole planting during sowing, so that the organic matter content of the soil can be increased, the saline-alkali components can be separated from the roots of crops, the stress of the saline-alkali soil on the crops can be effectively reduced, and the yield of the crops can be improved.

The utility model relates to the technical field of furfural processing, and discloses a desulfurization alkali preparation device for furfural processing, an adjusting device is composed of a motor, a gear, a rotating shaft, a fixing rod, a first spring, a sliding sleeve, a sleeve, a fixing cylinder, a sliding rod, a second spring, a fixing block, a limiting block and a fixing column, and the gear is fixedly mounted on an output shaft of the motor. According to the desulfurization and alkali preparation device for furfural processing, a limiting block is separated from a first clamping groove by pulling a pull ring, the limiting block can correspond to a second clamping groove through a sliding groove under the action of a first spring, the limiting block enters the second clamping groove under the action of a second spring, a fixing column and a rotating shaft can be fixed together, and a driving motor drives the limiting block to rotate. The fixed column can drive the desulfurization alkali preparation device main body to incline, so that a worker can conveniently clean the interior of the desulfurization alkali preparation device main body, the desulfurization alkali preparation device main body is more convenient to mount and dismount, and the practicability is high.

The application discloses a preparation method of energy storage long-cycle COPNA carbon material, and belongs to the technical field of lithium battery energy storage materials, and is characterized by comprising the following steps: first, composite carbonaceous raw materials are heated to 100 DEG C, and after being uniformly stirred, a compounded crosslinking agent and a compounded catalyst are added, and the stirring is continued for 10-15 min until the mixture is uniformly mixed, and then a crosslinking reaction is carried out at 120 DEG C-160 DEG C, and the reaction time is 4-6 h, so that COPNA resin is obtained; the obtained COPNA resin is carbonized at 460 DEG C-520 DEG C, so that COPNA carbon material is obtained. The application has the beneficial effects that: oil slurry pitch, coking wax oil and ethylene tar are used as the composite carbonaceous raw materials, the proportion of the three is controlled to accurately control the polarizing structure proportion of the COPNA carbon material, the structural stability of the material is improved, and the long-cycle requirement is adapted; the COPNA carbon material can consider the conductivity and the regularity of the layered orientation by using the furfural-polyformaldehyde compounded crosslinking agent and the compounded catalyst, and the structure damage or the conductivity decline in the long-term cycle process is avoided.

The invention belongs to the technical field of high-molecular compounds, and particularly relates to reversible cross-linked POSS (Polyhedral Oligomeric Silsesquioxane) hybrid nanoparticles as well as a preparation method and application thereof. The preparation method comprises the following steps: adding vinyl silane and amino silane into methanol, uniformly stirring, adding hydrochloric acid, stirring, reacting, filtering, washing and drying to obtain T8-hydrochloride; the method comprises the following steps: dissolving T8-hydrochloride in methanol to obtain a T8-hydrochloride solution, and enabling the T8-hydrochloride solution to pass through anion exchange resin to obtain a T8-amino solution; adding maleic anhydride into the T8-amino solution, and reacting to obtain a reaction solution I; firstly adding furfural into the reaction liquid I, then adding an auxiliary agent and acetic acid, and reacting to obtain a reaction liquid II; adding a reducing agent into the reaction liquid II for reaction to obtain reaction liquid III; dehydrating the reaction liquid III to obtain a reversible cross-linked POSS hybrid nanoparticle crude product; and then carrying out post-treatment and drying to obtain the reversible cross-linked POSS hybrid nanoparticles. The method is mild in reaction condition, simple in reaction operation and suitable for large-scale production.

The present application provides a kind of for furfural refining device extraction oil recovery system, comprising: de-aldehyde tower A, de-aldehyde tower B, reagent pump, de-aldehyde tower top cooler and de-aldehyde tower top liquid separator, compared with prior art, the present application has the beneficial effects as follows: the double-tower design of de-aldehyde tower A and de-aldehyde tower B reduces the number of trays of each tower, which can reduce the tower pressure, reduce the partial pressure of furfural at the bottom of stripping tower, facilitate the separation of furfural and extraction oil;Second, it can adapt to different furfural content of extraction oil, when the furfural content in extraction oil is low, only de-aldehyde tower A can be used, when the furfural content in extraction oil is high, de-aldehyde tower A and de-aldehyde tower B can be used simultaneously, to improve the flexibility of the whole system, inject alkaline reagent before extraction oil enters stripping tower, remove acidic substances in extraction oil, make furfural more easily and extraction oil separate.

The present application relates to furan preparation technical field, specifically to a kind of furfural decarbonylation catalyst, preparation method and utilize the catalyst preparation furan process.The catalyst includes carrier and active component supported on it, with the mass of the carrier, Pt 0.2%‑0.6%, Co 4%‑8%, Al2O3 74%‑85%, ZrO2 11%‑16%, CeO2 4%‑13%.The present application adopts structural aid ZrO2 and CeO2 to modify Al2O3 carrier, obtains acid moderate composite oxide carrier, can avoid the influence of furfural polymerization and the activity and stability of catalyst;Using Co as auxiliary active component, under the premise of reducing the dosage of main active component Pt, ensure catalytic effect, not only reduce the cost of catalyst, more importantly, it can improve the conversion rate of furfural and furan selectivity in furfural decarbonylation reaction, ensure high furan yield.

The application discloses a kind of based on enhanced raman's trace furfural in oil ultrafast detection method and system, the method includes: preparation regular arrangement metal nanometer finger array on flexible polymer substrate;After depositing dielectric film on the surface of metal nanometer finger, introduce removable sacrificial layer, under the condition with temperature gradient, volatile solvent is applied, adjacent metal nanometer finger gradually approaches contact, metal-dielectric-metal gap structure is formed, so that the enhanced substrate of hotspot uniform distribution is obtained;Transformer oil sample is directly dropped on the surface of the enhanced substrate;Using Raman spectrum system, enhanced raman signal of furfural molecule in the oil sample is collected under laser excitation;According to the enhanced raman signal, the characteristic peak of furfural in transformer oil is identified.The application can realize in-situ, high-sensitivity, rapid, non-destructive detection of trace furfural in transformer oil without extraction and adsorption.

The application relates to the technical field of biomass utilization, and relates to a continuous preparation technology of furfural from corncob, which comprises the following steps: S1: corncob is crushed into powder, then is mixed with sulfur trioxide, and is subjected to steam explosion under steam pressure; S2: acid catalysis-extraction reaction; S3: the once-extracted phase is subjected to solid-liquid separation, the liquid phase is subjected to secondary extraction by using an extracting agent, and a secondary extraction phase is obtained; S4: the once-extracted phase and the secondary extraction phase are combined and are sent into a rectifying tower for rectification, and furfural with a purity greater than 99% is obtained. The application has the beneficial effects that: 1. after the corncob is crushed, the corncob is mixed with sulfur trioxide and is subjected to steam explosion, hemicellulose can be effectively stripped from lignin, the subsequent reaction of preparing furfural from hemicellulose by acid catalysis can be more easily carried out, and the yield is higher; 2. in the method, acetic acid and aluminum chloride are used as mixed acid catalysts, the reaction temperature is reduced by 20-40 DEG C compared with one-pot method, and the reaction pressure is reduced by 0.4-0.7 MPa.G compared with one-pot method, so that the requirement of the reaction on equipment is reduced.

The invention provides a method for preparing furfural and co-producing activated carbon from oil-tea camellia fruit cattail, which comprises the following steps: hydrolyzing hemicellulose in the oil-tea camellia fruit cattail by adopting Bronsted acid to directionally convert the hemicellulose into xylose, and further converting the xylose into furfural by utilizing Lewis acid; the influence of process parameters such as reaction temperature, reaction time, acid type, acid concentration and immobilization rate on the furfural yield is systematically investigated. And after the reaction is finished, filtering to obtain solid residues, and further preparing the camellia oleifera fruit and cattail activated carbon by adopting chemical activation and calcination methods. Adsorbing and purifying furfural by using the obtained activated carbon, and analyzing to obtain a furfural product. According to the method for preparing furfural and co-producing activated carbon from the oil-tea camellia fruit cattail, high-value conversion of hemicellulose in the oil-tea camellia fruit cattail and gradient utilization of solid residues are achieved, a closed-loop process path for full utilization and collaborative optimization of the oil-tea camellia fruit cattail is constructed, and the whole process is green and free of'three wastes' emission.

The present application provides a kind of catalyst for preparing furfuryl alcohol by furfural hydrogenation, its preparation method and its application in preparing furfuryl alcohol by furfural hydrogenation.The preparation method of the present application comprises the following steps: under stirring condition, water is added to aluminum isopropyl alcohol;After stirring reaction, filtration, washing, drying, then high temperature calcination is obtained to obtain alumina;Alumina is immersed in copper nitrate solution, impregnation is stirred, dried, calcined reduction to obtain catalyst.The catalyst of the present application is Cu-Al catalyst, the preparation method of catalyst is simple, green and environmentally friendly, and the cost is low;The obtained catalyst is applied to the preparation of furfuryl alcohol by furfural hydrogenation, so that the reaction can be carried out at lower reaction temperature and lower reaction pressure, and furfuryl alcohol can be prepared with high conversion rate and high selectivity, the conversion rate of furfural can reach 100%, and the selectivity of furfuryl alcohol can reach 100%.

The invention discloses a preparation method of phenolic resin-based hard carbon, a negative pole piece and a battery, and the preparation method comprises the following steps: S1, mixing formaldehyde and furfural to obtain a mixed aldehyde solution; s2, adding mixed aldehyde and phenol into a solution containing a basic catalyst, and reacting to generate a liquid phenolic resin prepolymer; s3, adding carbon nanotubes into the liquid phenolic resin prepolymer, and dispersing the carbon nanotubes into the liquid phenolic resin prepolymer to obtain a second prepolymer; s4, curing the second prepolymer to obtain cured resin; and S5, carbonizing the cured resin to obtain phenolic resin-based hard carbon, thereby enhancing the sodium storage capacity and conductivity of the hard carbon.

A method of hydrogenation includes contacting a catalyst, including rhodium nanoparticles in an amount of 0.9 percent by weight (wt. %) to 1.1 wt. % based on the total weight of the catalyst supported on alumina, with furfural in the presence of ethanol to form a reaction mixture. The method further includes heating the reaction mixture at a pressure, at a temperature, and for a time, in a hydrogen gas atmosphere to form a hydrogenated product including furfuryl ethyl ether. At least 99 wt. % of the furfural is reacted to form the furfuryl ethyl ether and the furfuryl ethyl ether is formed with at least a 99 wt. % selectivity.

The utility model discloses waste heat treatment equipment in furfural production, which comprises a hydrolysis kettle, a pure water evaporator, a primary distillation tower and a waste heat treatment structure, the waste heat treatment structure is connected to the pure water evaporator, the hydrolysis kettle and the primary distillation tower, and the utility model relates to the technical field of furfural production. A pure water evaporator, a hydrolysis kettle and a primary distillation tower are ingeniously connected, and an efficient heat recovery and raw material drainage system is formed through a transfer feeding assembly, a series of drainage pipes, heat conduction + +-shaped sleeving pipes and other components. The system not only ensures the ordered flow of the raw material liquid, but also effectively recovers and utilizes the waste heat emitted by the equipment, and obviously improves the production energy efficiency.

The invention relates to a sludge / biomass mixed drying process, and belongs to the technical field of sludge treatment. Feeding the dewatered sludge, the biomass, the furfural modified diatomite, the isocyanatopropyltriethoxysilane and the stannous octoate into a double-shaft differential mixer, and uniformly mixing; discharging the mixed material from a discharge port of the double-shaft differential mixer, conveying the mixed material to a corrosion-resistant mesh belt conveyor, and uniformly spreading the material on a mesh belt to form a material layer; a hot air drying system is started, a hot air furnace generates low-temperature hot air, and the low-temperature hot air penetrates through a material layer from bottom to top for drying after being distributed through an air duct; wet and hot waste gas generated by drying firstly enters a condensation dehumidification device to remove moisture, then enters a heat recovery device to recover heat, and finally is discharged after being purified to reach the standard; the furfural modified diatomite is prepared from diatomite, absolute ethyl alcohol, furfural and hydrochloric acid; the moisture content of dried materials is low, and the materials are free of caking, uneven drying and the like.

The invention relates to a soil conditioner for improving saline-alkali soil as well as a preparation method and application thereof, and relates to the technical field of agricultural soil improvement, and the conditioner comprises furfural residues, a deadwood fermented organic fertilizer, a microbial agent, a protein material and calcium superphosphate. Experimental results show that the conditioner can significantly improve the physical structure of saline-alkali soil, the porosity is increased to 90% or above, the field moisture capacity is increased by 40-80%, and the soil moisture content is greatly increased. Meanwhile, in planting of saline-alkali tolerant plants such as caragana microphylla and Sadong green, the seedling rate of the F2 group formula applying the conditioner is increased to 45-55%, and growth indexes such as plant height, stem diameter and root development of the plants are remarkably superior to those of a control group. The method realizes resource utilization of industrial wastes, has the advantages of good improvement effect, low cost, environmental friendliness, simple process and the like, and is suitable for rapid improvement and ecological restoration of the saline-alkali soil.

A composite catalyst for electrochemical hydrogenation (ECH) of furfural (FF) to 2-methylfuran (MF) includes Molybdenum Mxene and carbon nitride. In an example, the composite catalyst is two dimensional (2D)-on-2D Mo3C2@g-C3N4. By performing the ECH of FF with the composite catalyst in a mild electrolyte solution and enabling the selective production of MF at particular applied potentials, the composite catalyst minimizes challenges commonly associated with conventional ECH methods. The structure of the composite catalyst, in which Molybdenum sites act as active centers and nitrogen facilitates the hydrogenation of FF, enables direct hydrogenation of FF to MF, thereby increasing selectivity and efficiency. The composite catalyst shows a high preference for FF reduction over HER, significantly increasing the faradaic efficiency (FE). The Molybdenum Mxene can be Molybdenum carbide. In an example, an amount of Molybdenum Carbide in the composite catalyst is between about 5 and about 10 mass percent.

The present application provides a kind of catalyst for furfural hydrogenation and its preparation and application.The catalyst is composed of metal copper, nickel silicate and carrier silicon oxide.The metal component copper accounts for 10-30% of the total weight of catalyst, and the nickel silicate accounts for 10-40% of the total weight of catalyst.The catalyst of the present application is prepared by deposition precipitation method.The catalyst of the present application is applied to the reaction conditions required for furfural hydrogenation to 2-methylfuran, and has superior reaction performance, specifically high furfural conversion rate, high 2-methylfuran selectivity and excellent long-period stability, and has certain industrial application prospect.

This invention discloses a La-doped ZnFe-LDHs catalyst for stabilizing Cu nanoparticles, its preparation method, and its application in the hydrogenation of furfural to furfuryl alcohol. It belongs to the technical field of catalytic material preparation and high-value utilization of biomass resources. The catalyst uses ZnFe-LDHs as a support, Cu as the active component, and La as a modifier to prepare a catalyst with the composition La-Cu / ZnFe-LDHs. The La modifier is partially doped into the ZnFe-LDHs layers and partially distributed on the support surface as La2O2(CO3) nanoparticles. This invention achieves multi-scale stabilization of Cu nanoparticles through La doping in the ZnFe-LDHs layers and the formation of the surface La2O2(CO3) nanophase. La regulates the electronic structure of the layers, keeping Cu in a low valence state through charge redistribution, while simultaneously improving the catalyst's resistance to sintering; the surface La2O2(CO3) inhibits Cu migration through structural anchoring. The catalyst maintained a high conversion rate of 93.5% after seven cycles in the hydrogenation of furfural to furfuryl alcohol, with a Cu loading as low as 4.74 wt%, significantly improving the stability of the Cu-based catalyst.

The utility model discloses a wastewater zero discharge system in a furfural production process. The wastewater zero discharge system comprises a hydrolysis kettle, a stock solution condenser, a stock solution distillation tower, a wastewater tank, a wastewater evaporator and a concentrated solution tank, the device has the advantages that secondary steam generated by the wastewater evaporator is used as a heat source in the hydrolysis process and then converted into aldehyde gas; the aldehyde gas condensate is distilled by the stock solution distillation tower to generate wastewater again, and the wastewater is discharged from the bottom of the tower to form a closed cycle; evaporation concentration residual liquid generated by the wastewater evaporator is used for preparing dilute acid in the hydrolysis process, so that wastewater is not discharged, meanwhile, 1-2% of acetic acid and a small amount of furfural in the wastewater can be effectively recycled, the use amount of sulfuric acid is reduced, and the yield of furfural is increased; moreover, the consumption of the sulfuric acid is reduced, so that the sulfur content in the boiler flue gas can be reduced, the pollution to the atmosphere is reduced, and clean production of furfural is realized.

To provide an alcoholic beverage containing Brown spirits and water-soluble dietary fiber, reduced in aftertaste and enhanced in bitter aftertaste.SOLUTION: An alcoholic beverage comprising Brown spirits, water-soluble dietary fiber, and one or more selected from the group consisting of ethyl laurate and furfurals; the above-mentioned alcoholic beverage wherein the concentration of ethyl laurate is 0. 02-0. 20ppm or the concentration of furfurals is 0. 05-0. 50ppm; and a method for improving the taste of an alcoholic beverage comprising Brown spirits and water-soluble dietary fiber, comprising adding one or more selected from the group consisting of ethyl laurate and furfurals.SELECTED DRAWING: None

The present application relates to the technical field of biomass black particle, and provides a method for continuously producing forestry biomass black particles with low energy consumption and a product thereof, the method comprising the following steps: mixing forestry biomass crushed material with a water content of less than 12% with an acid component after impurity removal and preheating treatment to obtain a mixed system; performing steam insulation and pressure maintaining treatment on the mixed system, then performing pressure reduction and spraying, and performing steam-solid separation to obtain a solid with a water content of 12-18%; and forming the solid to obtain the biomass black particles; the acid component is obtained by removing volatile components in a steam component obtained through steam-solid separation by a rectification process with a vacuum degree of 80-85 kPa; and the volatile components include one or a combination of two or more of essential oil, resin acid and furfural. The present application is continuously operated in the whole process, the process is controllable, the product quality is stable, and the utilization rate of forestry biomass components is high.

The invention discloses a sugarcane-flavored essence, which takes alcohol as a solvent and comprises the following components in parts by mass: 0.1 to 1.0 part of hexanal, 0.1 to 1.0 part of ethyl acetate, 0.01 to 0.1 part of isoamyl acetate, 0.001 to 0.01 part of acetic acid, 0.1 to 1.0 part of damascenone B, 0.1 to 1.0 part of furanone, 0.01 to 0.1 part of furfural and 0.01 to 0.1 part of phenethyl alcohol. The sugarcane-flavored essence disclosed by the invention has the flavor and fragrance of natural sugarcane juice, is not easy to deteriorate, does not cause blood sugar rise, and is conveniently added into food.

The invention discloses a process for producing furfural by continuous hydrolysis of biomass, and belongs to the technical field of biomass resource utilization. The process comprises the following steps: (1) introducing steam into a biomass raw material which is crushed to have the particle size of 5-10mm, and heating and wetting the biomass raw material; (2) mixing the wet biomass raw material with dilute sulphuric acid with the concentration of 5wt%-8wt%, and then continuously adding the mixture into the hydrolysis kettle, wherein the mass ratio of the dilute sulphuric acid to the biomass raw material is (0.08-0.2): 1; and 3) respectively and simultaneously introducing water vapor from the bottom and the middle part of the hydrolysis kettle for steam stripping, continuously extracting from the bottom of the hydrolysis kettle after the biomass stays for 0.5-3 hours in the hydrolysis kettle, continuously leading out aldehyde-containing steam from the top of the hydrolysis kettle, and cooling to obtain the furfural. The method has the advantages of high yield and low energy consumption, and the continuous production efficiency of the furfural is improved.

The present invention provides: a hydrogenation catalyst which can be used in a hydrogenation reaction of a cyclic aldehyde; and a method for producing an alcohol compound by hydrogenation of a cyclic aldehyde using the hydrogenation catalyst. The present invention pertains to a catalyst for hydrogenation of a cyclic aldehyde, the catalyst containing iron phosphide nanoparticles. It is preferable that the iron phosphide nanoparticles are rod-shaped particles and the maximum length of the rod-shaped particles in the major axis direction is less than 100 nm. It is preferable that the catalyst for hydrogenation of a cyclic aldehyde is a catalyst for hydrogenation of a furfural derivative.