8 results about "Alcohol reduction" patented technology

The utility model discloses an on-line alcohol-degree-reducing blending system for white spirit. The system comprises a high-degree wine tank, a seasoning wine tank, a pure water tank, a static mixer and an alcohol-degree-reducing wine storage tank, the feeding end of the static mixer is connected with a strong wine tank and a seasoning wine tank; the pure water tank is connected to the first conveying pipe through a third conveying pipe and a single-seat double-sealing seat valve, the feeding end of the first conveying pipe at the mounting position of the single-seat double-sealing seat valve is sequentially provided with an alcohol detector and a first pneumatic control valve, and a pressure gauge is arranged between the static mixer and the first conveying pipe at the mounting position of the single-seat double-sealing seat valve; a snakelike buffer pipe is arranged at the discharge end of the static mixer; an alcohol detector, a pressure gauge and a manual flow regulating valve are sequentially arranged on the fourth conveying pipe according to the flow direction, and the tail end of the fourth conveying pipe is connected into the alcohol-reduced wine storage tank. According to the utility model, on-line white spirit blending can be accurately realized, driving-force-free blending is carried out through the static mixer, the blended white spirit is good in taste, the cost is greatly reduced, and the production efficiency is improved.

The application relates to the fine chemical technology field and discloses a method for synthesizing an ultraviolet absorber through an alcohol reduction reaction, and the method steps are as follows: under the action of a MOF-derived copper-nickel-cerium trimetallic catalyst, an azo compound (I) or an intermediate nitroxide (II) is reacted with alcohol R-(OH) n A reduction reaction is generated by heating in a reaction kettle, and a benzotriazole compound (III) is prepared. The application utilizes the reduction characteristics of alcohol, adopts the MOF-derived copper-nickel-cerium trimetallic catalyst, combines the porosity and metal synergistic effect regulated by a structure directing agent, effectively improves the catalytic reduction efficiency and reaction selectivity, and the synthesis method has the advantages of no sewage, low cost, high safety and high yield.

The invention relates to the technical field of fine chemical engineering, and discloses a method for synthesizing an ultraviolet absorbent through reduction reaction of alcohols, which comprises the following steps: heating an azo compound (I) or an intermediate nitrogen oxide (II) with alcohol R-(OH) n in a reaction kettle under the action of an MOF-derived copper-nickel-cerium trimetal catalyst to generate reduction reaction; and the benzotriazole compound (III) is prepared. According to the method, the reduction characteristic of alcohol is utilized, the MOF-derived copper-nickel-cerium three-metal catalyst is adopted, the porosity regulated and controlled by the structure-directing agent and the metal synergistic effect are combined, the catalytic reduction efficiency and the reaction selectivity are effectively improved, and the synthesis method has the advantages of being free of sewage, low in cost, high in safety, high in yield and the like.

Process for recovering at least one fractional substance from vapours during the alcohol reduction of a beverage, and fractional substance recovery device for carrying out the process, in which an alcoholic beverage to be reduced in alcohol content is supplied to a degasser of a fractional substance recovery device, in which vapours are removed from the degasser and the alcoholic beverage passed through the degasser is supplied to a device for alcohol reduction, in which the vapours are fed to a plurality of fractional condensation stages which follow one another in series and in which at least one fractional substance is separated from the vapours under pressure and / or temperature, and in which the fractional substances separated in the respective fractional condensation stage are collected in a collecting container or are fed to an inoculation station, through which the separated fractional substances are fed in metered quantities to an alcohol-reduced drink.

The invention discloses a method for improving the acid ester stability of medium-alcohol and low-alcohol baijiu, which is characterized in that the alcohol content of high-alcohol baijiu is reduced only by adopting slurry-adding water, and the pH value of the slurry-adding water is required to be greater than or equal to 7.3 and the bicarbonate radical content is not less than 50mg / L. According to the method disclosed by the invention, a method system for thermodynamically influencing the hydrolysis rate of the ester substances in the medium-low-alcohol white spirit is constructed through the hydrolysis equilibrium of bicarbonate radicals, the ionization equilibrium of water and the hydrolysis equilibrium of the ester substances, so that the hydrolysis rate of the ester substances in the medium-low-alcohol white spirit after the alcohol content is reduced can be slowed down; therefore, the stability of ester components in the medium-alcohol and low-alcohol white spirit is improved.

The invention relates to the technical field of white spirit brewing, and particularly provides a low-alcohol white spirit preparation method with synergism of gradient degree reduction and freezing filtration, which comprises the following steps: gradient degree reduction: carrying out gradient degree reduction treatment of at least three stages on low-alcohol white spirit base liquor with the alcoholic strength of 55-70% vol, so that the final alcoholic strength is reduced to 35-42% vol; and carrying out temperature synergistic freezing treatment: after each degree reduction stage is completed, cooling the wine body to a specified temperature interval of-3 DEG C to-10 DEG C, and carrying out low-temperature standing and filtering. According to the method, the degree reduction range is reduced by stages, the standing time is prolonged, esters are gradually migrated to a colloid phase, and irreversible precipitation is reduced. The freezing temperature is matched according to the ester solubility threshold value corresponding to the alcoholic strength in each stage, and flavor loss caused by excessive low temperature is avoided.

The present invention relates to a method for recovering at least one fractional substance from vapor while the alcohol of a beverage is being reduced, and to a fractional substance recovery device for carrying out this method. In this method, an alcoholic beverage to be reduced in alcohol content is fed to a deaerator (62) of a fraction recovery device (60). Vapors are then removed from the deaerator (62), and the alcoholic beverage that has passed through the deaerator (62) is fed to a device for alcohol reduction (10). There, the vapors are sent to a series of fractional condensation stages (66, 67, 68) in which at least one fractional substance is separated from the vapor under pressure and / or temperature. The fractional substance separated in each fractional condensation stage (66, 67, 68) is then collected in a collection vessel (84, 85, 86, 87, 88, 89) or sent to an inoculation station (19), where it is fed in measured amounts to the reduced-alcohol beverage.

The present application provides an iodine-mediated alcohol reduction method, which relates to the field of organic chemistry; the method provided by the present application uses H2 as a reducing agent, hydroiodic acid (HI) as a catalyst to catalyze the deoxidization reduction of alcohol; the reaction process is as follows: alcohol, HI and solvent are mixed and put into a batch reaction kettle, H2 is introduced into the reaction kettle, heated to 100-300 DEG C and reacted for 1-24 h, a reduction reaction occurs to generate alkanes; the method is simple and environmentally friendly, the by-product is H2O, and there is no metal catalysis; and benzyl alcohol, linalool, allyl alcohol and derivatives of the three are used as substrates.