6results about How to "Reduce Methanol Content" patented technology

The invention discloses an alcohol distillation and purification system, belongs to distillation and purification of alcohol in the technical field of alcohol production, and aims to solve the technical problems that in the prior art, the content of methanol and n-propanol in finished edible alcohol exceeds standard values, and the quality of the finished product is low. Comprising a crude tower, an aldehyde removal tower, a water washing tower, a rectifying tower, a methanol removal tower, a recovery tower, an industrial alcohol purification tower and an industrial alcohol storage tank, the crude tower, the aldehyde removal tower, the water washing tower, the rectifying tower and the methanol removal tower are sequentially connected, and impurity outlets of the crude tower, the aldehyde removal tower, the water washing tower, the rectifying tower and the methanol removal tower are all connected with the recovery tower; low-concentration industrial alcohol in the recovery tower is input into an industrial alcohol purification tower, pure high-concentration alcohol output from the upper part of the industrial alcohol purification tower is conveyed to an aldehyde removal tower and a rectifying tower, high-concentration industrial alcohol output from the upper part of the industrial alcohol purification tower is conveyed to an industrial alcohol storage tank, and hot water output from the bottom of the industrial alcohol purification tower is conveyed to a water washing tower. The system can reduce the content of isoamyl alcohol, isobutanol and n-propyl alcohol in a finished product and improve the quality of the finished product.

The embodiment of the invention relates to a preparation method of aroma-enhancing drinkable sweet potato wine, and belongs to the technical field of wine brewing. The embodiment of the invention aims to solve the technical problems that the existing sweet potato wine brewing technology is unstable, the brewing batch difference is large, the aroma is thin, and the content of methanol and higher alcohol in the wine is high. The preparation method of the aroma-enhancing and drinking-soothing type sweet potato wine comprises the following steps: (1) pretreatment; (2) pre-acidification fermentation of sweet potatoes; (3) saccharifying and fermenting the sweet potatoes; (4) performing alcoholic fermentation on the sweet potatoes; and (5) acousto-optic coupling sectional gradient aging acceleration. According to the method provided by the invention, pre-acidification fermentation, diastatic fermentation and alcoholic fermentation are carried out by constructing a minimum functional microbiome, aroma enhancement is carried out from the source, the proportion of alkyd ester is adjusted in the process, and an acousto-optic coupling aging accelerating technology is adopted, so that the flavor of the sweet potato wine is improved, the content of substances easy to drink is reduced, and the drinking safety and quality are improved; in addition, the method is simple in brewing process, efficient, stable and low in cost.

The invention relates to the technical field of wine brewing, and discloses brandy prepared by distilling blueberry wine residues and a brewing process of the brandy. The brewing process comprises the following steps: crushing blueberries, fermenting with saccharomyces cerevisiae, and separating to obtain blueberry wine and primary blueberry wine residues; continuously fermenting the primary blueberry wine residues to obtain secondary blueberry wine residues after fermentation; carrying out primary distillation on the secondary blueberry wine residues; collecting a primary foreshot, a primary wine body and a primary after-run after the first distillation; performing secondary distillation on the primary foreshot and the primary after-run, and collecting secondary foreshot, secondary wine body and secondary after-run after the secondary distillation; the primary wine body and the secondary wine body are subjected to third distillation, third foreshot, third wine body and third after-run after the second distillation are collected, and the third wine body obtained through the third distillation is the finished product brandy. According to the method, the wine residues are brewed into the brandy, so that the value of the blueberries is fully played, the resource utilization maximization is achieved, the cost is saved, and the environmental pollution is avoided.

The utility model relates to alcohol hydrogen device technical field, and disclose a kind of water scrubbing tower energy-saving device for gasoline hydrogenation workshop, including upper tower body and lower tower body, the top of upper tower body is provided with filter assembly, and the inner wall of upper tower body is provided with multilayer high-efficiency wire mesh demister, the inner wall of upper tower body is provided with spray assembly.The water scrubbing tower energy-saving device for gasoline hydrogenation workshop is provided with gas outlet, filter box, mounting groove, filter screen frame, activated carbon filter screen, sealing ring and hydrogen outlet, by setting multilayer high-efficiency wire mesh demister in upper tower body top area, can better demist breakage, by being provided with activated carbon filter screen, residual methanol molecule in hydrogen can be adsorbed, reduce methanol content in hydrogen, improve water scrubbing tower top demethanol effect, effectively solve the problem that methanol hydrogen around methanol peculiar smell is big, improve workshop working environment.

The invention relates to the technical field of benzofuroxan preparation, and particularly discloses benzofuroxan and a preparation system and a preparation method thereof, the benzofuroxan comprises a resin barrel and a plurality of resin columns, the resin barrel is provided with a rotating rod, and the resin barrel is also internally provided with a first station, a second station, a third station and a fourth station; when the resin column is located at the first station, the resin column is used for adsorbing organic matters in the waste liquid, when the resin column is located at the second station, methanol is used for eluting the adsorbed organic matters in the resin column, when the resin column is located at the third station, the residual methanol in the resin column is centrifugally thrown away, and when the resin column is located at the fourth station, the residual methanol in the resin column is centrifugally thrown away. According to the resin column detection device, the content of methanol in a resin column is detected, resin in the resin column is dumped and replaced, the rotating rod drives the resin column to be switched on the first station, the second station, the third station and the fourth station, and the time consumed for replacing the resin column and the cost needed for replacing the resin column are saved.

The utility model discloses a system for recycling methanol in acid desorption flare gas, and belongs to the technical field of chemical engineering of low-temperature methanol washing devices. The system comprises a water washing tower, a main absorption tower, a CO2 desorption tower, a tail gas water washing tower, a methanol rectifying tower, a feed gas cooler and a gas-liquid separator which are connected with one another, a raw material gas feeding material pipeline is arranged at the side end of the middle part of the gas-liquid separator; a material flow pipeline used for discharging low-temperature purified raw material gas at the upper end of the main absorption tower, a material flow pipeline used for discharging low-temperature CO2 at the upper end of the CO2 desorption tower, a material flow pipeline used for discharging low-temperature tail gas at the upper end of the tail gas washing tower and a feed material pipeline of the raw material gas pass through the raw material gas cooler in parallel and are used for heat exchange to cool the raw material gas; by means of the improvement of the structural design, efficient recovery of methanol is guaranteed, and the safety and environmental protection problems of flare gas emission are solved.