100 results about "Ethanol content" patented technology

The invention discloses a strain of saccharomyces cerevisiae CPJ-02 with high acid resistance, high ethanol content and strong ester aroma generation and application of the saccharomyces cerevisiae CPJ-02, the strain of the saccharomyces cerevisiae CPJ-02 has been preserved in China Center for Type Culture Collection on June 27, 2024; the preservation number of the strain is CCTCC NO: M 20241388. The saccharomyces cerevisiae CPJ-02 strain is milky white to faint yellow after being cultured on a YPD solid plate for 48 hours, the surface is dry and matte, the texture is slightly rough, and the colonial morphology is round. The saccharomyces cerevisiae CPJ-02 strain has prominent high ethanol tolerance, and still has activity greater than or equal to 92% in a 12% ethanol environment; and the fermentation product is rich in aroma and high in ethyl caprylate and phenethyl alcohol content, more than or equal to 25 volatile substances are detected by GC-MS (gas chromatography-mass spectrometry), and the fermented product is rich in fruit fragrance and has ester flower fragrance. The saccharomyces cerevisiae CPJ-02 strain is suitable for production of high-concentration wines and directional production of low-concentration healthy fermented beverages, fermented foods and aroma compounds.

A fluorescent probe based on red light carbon quantum dots and its application in detecting ethanol concentration in ethanol-water system belong to the field of fluorescent probe technology. The present invention uses p-phenylenediamine as a carbon source and citric acid as a reducing agent, and adopts a one-step hydrothermal method to prepare carbon quantum dots, whose emission peak is located in the red light region and can be stored stably for a long time. The carbon quantum dots can quickly, simply and efficiently identify and detect the ethanol concentration in the ethanol-water system. By increasing the ethanol content, the emission peak of the carbon quantum dots blue-shifts and the fluorescence intensity gradually increases. The results show that when the concentration of ethanol is in the range of 20%-80%, there is a good linear relationship between the luminescence intensity of the carbon quantum dots and the concentration of ethanol. At the same time, the carbon quantum dots can also be used to detect low concentrations of ethanol in water, with a detection limit of 1.5%, and can be used for fluorescent detection of ethanol concentration and visual detection of ethanol concentration.

The invention discloses a rectification method for efficiently producing high-purity methanol by using low-temperature heat. According to the technology, a pressurized tower and an atmospheric tower are connected in parallel, so that crude methanol from a pre-tower kettle enters the two towers in a split-flow manner, low-temperature heat is used for supplying heat, and steam at the top of the pressurized tower serves as a heat source of a reboiler of the atmospheric tower; a tower section heat exchanger which can be flexibly arranged is arranged in the vacuum tower to utilize low-temperature heat; and thirdly, a recovery tower is changed into a vacuum tower, and low-temperature heat is used as a heat source of a reboiler. The technology can be flexibly implemented partially or completely, and a remarkable energy-saving effect can be achieved. The embodiment shows that the technology can stably produce high-precision methanol with the ethanol content as low as 10 ppm or below, the fresh steam consumption per ton of methanol is reduced to 0.2 ton or below, the productivity of the device can also be improved, and compared with a traditional four-tower double-effect rectification technology (the ethanol content is about 50 ppm, and the fresh steam consumption per ton of methanol is 1.0-1.2 tons), the technology has remarkable advantages in the aspects of product purity reduction and energy consumption reduction. The method effectively solves the problems of difficult production of high-precision methanol, high energy consumption and insufficient utilization of low-temperature heat in the prior art, and has good economic and environment-friendly benefits.

The invention relates to a double-low-temperature-heat-source negative-pressure hot-trap multi-effect crude methanol rectification device and a process method. The first process is a double-low-temperature-heat-source negative-pressure hot-trap five-tower reverse triple-effect negative-pressure process and comprises a pre-rectifying tower, a vacuum rectifying tower, a normal-pressure rectifying tower, a high-pressure rectifying tower and a methanol recovery tower which are connected in sequence. The connection sequence of the normal-pressure rectifying tower and the high-pressure rectifying tower in the first process is changed, the second process is a double-low-temperature heat source negative-pressure hot trap five-tower mixing triple-effect negative-pressure process, and steam at the top of a pre-rectifying tower supplies heat to a first reboiler of a vacuum rectifying tower. And steam at the top of the normal-pressure rectifying tower supplies heat to a reboiler II of the vacuum rectifying tower. And a gas phase at the top of the high-pressure rectifying tower supplies heat to the pre-rectifying tower reboiler and the normal-pressure rectifying tower reboiler respectively. The two processes can achieve the remarkable energy-saving effect of the methanol rectification process flow, the circulating water saving amount is about 50%, and the method is suitable for arid and water-deficient areas, and meanwhile is suitable for medium and small-scale production expansion of methanol rectification with the original production capacity being 35% or below and crude methanol treatment with the high ethanol content.

The invention provides tamarind polysaccharide gel and a preparation method and application thereof.The preparation method of the tamarind polysaccharide gel comprises the following steps that S1, beta-galactosidase is added into a tamarind polysaccharide aqueous solution, alcohol precipitation and drying are performed after enzymolysis and enzyme deactivation, and tamarind polysaccharide subjected to enzyme treatment is obtained; wherein the enzymolysis time is 1 to 2 hours; s2, adding the tamarind polysaccharide subjected to enzyme treatment into an ethanol water solution, and stirring to obtain a mixed solution; wherein the volume ratio of the ethanol in the mixed solution is less than or equal to 15%; s3, refrigerating the mixed solution to obtain the tamarind polysaccharide gel. According to the method, stable gel can be formed under the condition of low ethanol content, the irritation of the product is reduced, the strength of the gel can be considered, and the application range of the tamarind polysaccharide can be expanded.

The invention discloses a workshop management early warning method and system based on multi-source environmental bacteria information, and relates to the technical field of workshop management. The method comprises the following steps: confirming m sampling areas in a current workshop, and obtaining real-time bacteria information of the current workshop from the sampling areas; judging whether the current workshop meets quality control conditions or not based on the real-time bacterial genus information; the quality control conditions comprise that each sampling area contains n types of characteristic bacteria, and the relative abundance value of the characteristic bacteria meets a threshold condition; the relative abundance value of each characteristic bacterial genus is in positive correlation or negative correlation with the ethanol content; and when the current workshop does not meet the quality control condition, sending an early warning instruction. According to the method, the quality control conditions are set, the bacteria information of multiple areas in the workshop is detected, the bacteria information of the workshop is compared with the quality control conditions, and whether the workshop environment meets the requirements of the quality control conditions or not is judged; if not, an alarm is given out in time, and a manager is reminded to pay attention to the workshop microorganism state in time after the alarm is given out.

The present invention belongs to the field of biochemical engineering, and relates to a chemical catalyst–microbial carbon sequestration system for improving the utilization efficiency of H2 and the use thereof. By culturing a chemical catalyst having H2 activation performance and acetogens in a culture medium containing H2 and CO2, the utilization efficiency of H2 and CO2 can be significantly improved, and the concentrations of ethanol and acetic acid are significantly increased, thereby reducing the acid-alcohol ratio; moreover, the biomass is also significantly improved. The provided hydrogenase-mimicking chemical catalyst and acetogens carbon sequestration system significantly improves the utilization efficiency of H2 and the carbon sequestration efficiency, increases the content of ethanol and thus increases the added value of the product, and is of great significance to the industrial implementation of biological fixation of CO2 using H2 as an energy source.

The present invention proposes a method for determining the ethanol content in gasoline, comprising the following steps: (1) obtaining a near infrared spectrum of a gasoline sample with a known ethanol content, and establishing a calibration set and an optional verification set; (2) obtaining a difference spectrum of the near infrared spectrum of the calibration set and a difference value of the ethanol content corresponding to the difference spectrum by the same difference subtraction method; (3) establishing a correlation model between the difference spectrum of the near infrared spectrum of the calibration set and the difference value of the ethanol content; (4) determining the near infrared spectrum of the gasoline sample to be tested, finding the spectrum closest to the gasoline sample to be tested from the calibration set, calculating the difference spectrum between the two, calculating the difference value of the ethanol content corresponding to the difference spectrum by the correlation model in step (3), and adding the difference value to the ethanol content value of the gasoline sample corresponding to the closest spectrum to obtain the ethanol content of the gasoline to be tested. The method of the present invention has fast analysis speed, accurate test, good repeatability, and is suitable for rapid determination of the ethanol content in ethanol gasoline.

This invention discloses an energy-saving five-tower methanol distillation method based on multi-effect thermal coupling. Crude methanol is fed to a pre-tower for distillation; the bottom product of the pre-tower is fed to an atmospheric distillation tower, the bottom product of the atmospheric distillation tower is fed to a negative pressure distillation tower, and the bottom product of the negative pressure distillation tower is fed to a pressurized distillation tower; the bottom product of the pressurized distillation tower is fed to a secondary pressure distillation tower; refined methanol is collected from the tops of the pressurized distillation tower, the atmospheric distillation tower, the negative pressure distillation tower, and the secondary pressure distillation tower; the top product of the pressurized distillation tower heats the reboiler of the secondary pressure distillation tower, and the top product of the secondary pressure distillation tower heats both the reboilers of the pre-tower and the atmospheric distillation tower; the top products of the pre-tower and the atmospheric distillation tower heat the reboiler of the negative pressure distillation tower. This process improves the heat recovery efficiency within the system, significantly reduces the condensation load of the top vapor, lowers the overall energy consumption of the distillation process, and achieves efficient multi-stage heat recovery and utilization within the system, reducing the ethanol content in the refined methanol product and improving methanol recovery efficiency.

The invention belongs to the technical field of microorganisms, and particularly relates to a novel ethanol-tolerant bacillus strain and application thereof. The invention provides a novel bacillus sporogenes Y61 which is a novel species under the control of bacillus sporogenes. The strain Y61 has better ethanol tolerance, can grow in an ethanol environment with the concentration of 10%, can promote the generation of hexanoic acid, and can be used for industrial production of Luzhou-flavor liquor in an environment with high ethanol content. Therefore, the strain Y61 can be widely applied to the fields of white spirit, soy sauce, pickled vegetables, traditional Chinese medicine manufacturing and the like. Meanwhile, the strain can also be used as a new genetic engineering strain, and more excellent characters can be obtained by accepting other foreign excellent genes.

The invention discloses a double-hot-trap five-tower positive-pressure triple-effect methanol rectification device and a process method, and belongs to the technical field of rectification. The device comprises a pre-rectifying tower, a normal-pressure rectifying tower, a medium-pressure rectifying tower, a high-pressure rectifying tower and a methanol recovery tower which are connected in sequence, wherein the lower part of each tower is connected with a corresponding reboiler. Steam at the top of the medium-pressure rectifying tower supplies heat to a pre-rectifying tower reboiler II and a normal-pressure rectifying tower reboiler, steam at the top of the high-pressure rectifying tower supplies heat to a medium-pressure rectifying tower reboiler, and high-temperature wastewater at the bottom of the high-pressure rectifying tower supplies heat to a methanol recovery tower reboiler. Through multi-tower heat integration, remarkable energy conservation is achieved, the unit consumption of process steam is 0.55-0.6, the system is suitable for medium and small-scale production expansion and treatment of crude methanol raw materials with high ethanol content, system coupling is simple, the starting difficulty is low, and the yield and quality of refined methanol are high.

The utility model provides a crude methanol refining device which comprises a pre-rectifying tower, the pre-rectifying tower is respectively connected with a side line tower and a pressurizing tower, the pressurizing tower is connected with an atmospheric tower, and a pre-tower reboiler, a side line tower reboiler, a pressurizing tower reboiler and an atmospheric tower reboiler are respectively arranged on the pre-rectifying tower, the side line tower, the pressurizing tower and the atmospheric tower. The gas phase extracted from the top of the atmospheric tower exchanges heat with the pre-tower reboiler and the side tower reboiler; gas extracted from the top of the pressurizing tower exchanges heat with a reboiler of the atmospheric tower; the thermal coupling technology of the pre-rectifying tower, the side tower, the pressurizing tower and the atmospheric tower is adopted, a heat exchange network is optimized, the energy-saving space is improved, methanol with the concentration larger than 99.99% can be extracted, and the content of ethanol is 10-200 ppm; according to the method, the original devices such as a pre-rectifying tower, a pressurizing tower and an atmospheric tower are improved, the improvement cost is low, and compared with the traditional methanol process, the unit consumption of steam can be reduced to 0.7-0.8 t steam / t refined alcohol, so that the energy consumption is greatly reduced.

The invention relates to a system for converting, at least partially and without combustion, into electrical energy of chemical energy included in an electrolytic solution, being also a subject of the invention, comprising copper hydroxide, potassium hydroxide, ethanol with an alcohol content greater than 90% and double-distilled water. The system (1) comprises an electrolytic cell (3) for subjecting the aforesaid electrolytic solution to electrolysis, and a fuel cell (25) for producing electrical energy from the aeriform mixture generating in the electrolytic cell (3). A further solution (26), also electrolytic, exits from the fuel cell (25) and is re-introduced into the electrolytic cell (3) by means of the passage through a recovery tank (28). The invention further relates to a process, also actuatable by means of the aforesaid system (1), for converting, at least partially and without combustion, into electrical energy the chemical energy included in the aforesaid electrolytic solution.

The high-precision handheld ethanol detector comprises a handheld rod and an ethanol detection rod used for detecting the ethanol content, the left end of the handheld rod is fixedly connected with a control assembly, the ethanol detection rod is movably installed at the left end of the control assembly, and an erasing adsorption mechanism is fixedly installed at the lower end of the control assembly. A transmission tooth column used for transmitting power is installed in an inner cavity of the control assembly, the erasing adsorption mechanism comprises a connecting plate and a fit strip block, an erasing sponge with a cleaning function is installed on the upper portion of the fit strip block, and a bearing conical block is fixedly installed at the left end of an ethanol detection rod. The outer surface of the ethanol detection rod is in contact with an erasing sponge in an erasing adsorption mechanism, saliva on the surface of the ethanol detection rod is erased and adsorbed, and a camera and a light supplementing lamp are arranged, so that when an unmatched driver escapes from a detection site, related videos can be timely left for later tracking treatment.

The present invention provides a beer-flavored beverage with a low ethanol content and excellent fermentation characteristics and flavor typical of beer-flavored beverages, as well as a method for producing the same. [Solution] A beer-flavored beverage is provided that contains less than 0.07 ppm by mass of diacetyl, 0.07 ppm by mass or more of ethyl acetate, and 0.4 (v / v)% or more but less than 1.5 (v / v)% of ethanol, with an H2S content of less than 5 ppb by mass and a final fermentation degree (LA) of 60% or less.

The invention relates to the field of traditional Chinese medicine compositions, and particularly discloses a composition for treating alopecia and a preparation method thereof. The invention aims to solve the problems that the problem of alopecia is more and more common at present, and a medicine for treating alopecia is low in treatment effective rate and easy to relapse, and particularly provides a composition for treating alopecia, which comprises ethanol with the ethanol content of 85-92%.

The utility model relates to the field of oil level sensors, in particular to an oil level sensor with good sealing performance, which comprises a framework, a plug sealed on the framework, an outer rocker arm rotatably connected on the framework, a floater component fixed on the outer rocker arm, a first sealing ring arranged between the outer rocker arm and the framework, and an inner rocker arm connected with the inner rocker arm. A reed assembly is fixed to the inner rocker arm and connected with a resistor disc, the resistor disc is connected with a terminal wiring harness assembly, the part, in the framework, of the terminal wiring harness assembly is connected with the framework in an injection molding mode, the framework is connected with a cover plate, and a first sealing ring is arranged between the outer rocker arm and the framework, so that the outer rocker arm and the framework which are rotationally connected are well sealed; according to the oil level sensor, the terminal wire harness assembly and the framework are connected in an injection molding mode, the sealing performance in the framework is further improved, fuel oil is well prevented from entering the framework to damage parts in the framework through the double-layer arrangement, and the oil level sensor can be suitable for fuel oil with the high ethanol content.

The present invention discloses a method for preparing beer having an ethanol content of 0-1.0 vol. %, comprising providing a medium having an ethanol content of 0-20 vol. %, which medium comprises restricted-fermentation beer; subjecting said medium to a distillation step, thereby reducing the quantity of one or more aldehydes selected from the group consisting of 2-methyl-propanal, 2-methylbutanal, 3-methylbutanal, 3-methylthiopropionaldehyde, phenylacetaldehyde, hexanal, trans-2-nonenal, benzaldehyde and furfural in the medium, and thereby also reducing the ethanol content, if present, to a content in the range of 0-1.0 vol. %. The invention furthermore discloses beer obtained with the said process.

The invention discloses a preparation method of a radix astragali extracting solution with high antioxidant activity and the extracting solution, and aims to solve the problems of low extraction rate of active substances and inaccurate detection of antioxidant activity in the prior art. According to the method, five factors including ethanol content, extracting solution multiple and the like are taken as key variables, U10 * (108) uniform test design is adopted, the DPPH free radical scavenging rate is accurately determined by combining an electron paramagnetic resonance technology, and the contents of astragaloside, general flavone and polysaccharide are synchronously detected. A quantitative model is established through multivariate linear regression analysis, and the optimal process parameters are determined: the ethanol content is 80%, the extracting solution multiple is 4, the temperature is 85 DEG C, the time is 1.5 h, and the extraction time is 1 time. The DPPH free radical scavenging rate of the extracting solution prepared through the technology is larger than or equal to 92.75%, polysaccharide is larger than or equal to 12520 mg / L, total flavone is larger than or equal to 323.77 mg / L, astragaloside is larger than or equal to 257 mg / L, synergistic efficient extraction of multiple components is achieved, and the extracting solution is suitable for industrial production.

The invention provides a system for predicting the content of methanol and ethanol in automotive gasoline, and relates to the technical field of chemical analysis and detection. The method comprises the following steps: firstly, carrying out first chemical treatment on first gasoline to improve the significance of aromatic hydrocarbon, olefin and other components, determining the proportion of an association body according to the components except alcohols in the first gasoline, and further determining a first spectral peak position offset; secondly, carrying out second chemical treatment on the first gasoline, respectively obtaining a characteristic peak combination of each alcohol component so as to remarkably improve the significance, and determining a plurality of first key wavelengths based on each characteristic peak combination; and finally, determining a plurality of corresponding first absorbance values based on the plurality of target key wavelengths so as to finally determine the content of each target component in the first gasoline. According to the method, chemometrics, near infrared spectroscopy and artificial intelligence means are combined, the gasoline component recognition precision is greatly improved, and nonlinear effects such as hydrogen bond association in high-concentration alcohols are effectively corrected.

The present invention relates to a single-serving capsule for preparing a hoppy alcoholic beverage with a foam height. This capsule is characterized in that it comprises at least two compartments, including a first compartment and a second compartment; the first compartment comprising 5-30 mL of an aqueous liquid having an ethanol content of 0-10% ABV and comprising 0.1-25% by weight of protein; the second compartment comprising 5-50 mL of an alcoholic liquid containing 20-99.9% by weight of ethanol, 0-60% by weight of water, and 50-2,000 mg / kg of hop acids selected from iso-alpha acid, hydrogenated iso-alpha acids, hulupones, and combinations thereof; wherein the ethanol and water together constitute at least 80% by weight of the alcoholic liquid.

The invention discloses a multi-element titanium-based oxynitride with a tubular structure and a preparation method and application thereof.The preparation method comprises the steps that absolute ethyl alcohol is added into an electrostatic spinning precursor solution of the multi-element titanium-based oxynitride through an electrostatic spinning method for electrostatic spinning, after electrostatic spinning is finished and drying is conducted, oxidation sintering and nitridation treatment are conducted in sequence, and the multi-element titanium-based oxynitride with the tubular structure is obtained. The multi-element titanium-based nitrogen oxide material with tubular morphology is successfully prepared, and the specific surface area of the multi-element titanium-based nitrogen oxide material is obviously increased; the microstructure of the multi-element titanium-based nitrogen oxide is controlled by optimizing the content of absolute ethyl alcohol, a tubular structure with a large specific surface area is finally prepared, and the tubular structure increases active sites on the surface of the photocatalyst, increases the light absorption area, reduces the carrier transmission distance and effectively improves the light absorption characteristic; the performance of the photocatalyst is improved; therefore, the preparation method has the characteristics of simple process, controllable morphology and low cost.

The present invention relates to an alcoholic beer having an ethanol content of at least 1% ABV and containing 9 (S), 12 (S), 13 (S)-trihydroxy-10 (E)-octadecenoic acid (TOA) and free amino nitrogen (FAN) in a ratio of less than 0.035 mg TOA / mg FAN. The inventors have found that aging of alcohol-containing beer during storage can be retarded by selectively removing 9 (S), 12 (S), 13 (S)-trihydroxy-10 (E)-octadecenoic acid (TOA) from wort prior to fermentation. Another aspect of the invention relates to a method for preparing beer, comprising the following consecutive steps:-providing wort; -contacting the wort with a ZSM-5 zeolite; -separating the treated wort from the ZSM-5 zeolite; -fermenting the treated wort with a yeast to produce a fermented wort having an alcohol content of at least 1% ABV; and-separating the yeast from the fermented wort.

The invention discloses a method for determining the content of ethanol in ferrous succinate tablets. The method provided by the invention solves the interference of a blank solvent on ethanol determination, and obtains a specific headspace equilibrium condition, so that the ethanol content in the ferrous succinate tablet can be effectively detected, and the safety of clinical medication of the ferrous succinate tablet is ensured.

The invention relates to a method for detecting alcohol content in lithium hexafluorophosphate liquid salt, and belongs to the field of alcohol content detection. The detection method comprises the following steps: adding sodium chloride into the lithium hexafluorophosphate liquid salt to carry out headspace gas chromatography detection, and determining the alcohol content according to a standard curve, the alcohol is selected from methanol and / or ethanol. According to the method, the lithium hexafluorophosphate liquid salt is pretreated before headspace gas chromatography detection, namely sodium chloride is added, and the distribution proportion of methanol and ethanol in a gas phase is improved, so that methanol and ethanol in a solvent are fully gasified, and the detection accuracy of the content of methanol and ethanol in the lithium hexafluorophosphate liquid salt is improved.

The invention relates to a method preparing a carbonated alcoholic beverage having an ethanol content of 2-12% ABV and a water content of at least 80 wt.%, said method comprising combining: • 0.03-10 parts by weight of beer distillate having an ethanol content of 50-98 wt.% and comprising 200-2,000 mg / kg of amyl alcohols, the beer distillate containing ethyl acetate and amyl alcohols in a weight ratio of ethyl acetate : amyl alcohols of less than 1:30; • 2-30 parts by weight of ethanolic liquid having an ethanol content of 25-100 wt.%; • 0.3-10 parts by weight of fruit juice concentrate; • 0.2-1.2 parts by weight of carbon dioxide; • 60-90 parts by weight of water. The beverage obtained by this method has a unique appealing taste. The beer distillate is an essential component of the beverage. The beer distillate combines a high ethanol content with a high content of amyl alcohols and other beer flavour components having a boiling point in the range of 80-210 °C, such as isoamyl acetate, ethyl caproate, furfural, linalool and dimethyl disulfide.

A process for producing oxygenates from syngas is provided. The process involves mixing syngas with hydrogen sulfide, forming a syngas mixture; contacting the syngas mixture with a catalyst composition in a reactor to obtain a first product stream; splitting the first product stream into a non-condensable material stream and a condensable material stream; directing the non-condensable material stream back into the reactor; and directing the condensable material stream to a distillation column, producing a product stream having a high percentage of ethanol. The catalyst composition includes rhodium, lanthanum, gallium, vanadium and a support.

The invention relates to the technical field of methanol synthesis processes, and discloses a methanol synthesis optimization method based on multi-stage temperature control and hydrogen-carbon ratio dynamic regulation and control. The method comprises the following steps: acquiring real-time process data such as reactor temperature, pressure and raw material gas composition, and inputting the data into a digital twinborn model of an integrated mass and energy conservation equation to obtain catalyst activity and reaction state estimation; the optimal temperature set point and hydrogen-carbon ratio adjustment amount are dynamically solved by taking reduction of unit consumption of fresh gas and inhibition of ethanol content as targets; the temperature of each section of the reactor and a hydrogen recovery device are precisely regulated, and the reflux ratio and temperature of the rectifying tower are cooperatively regulated. According to the method, the technical problems of high fresh gas consumption and high byproduct ethanol content caused by fixed parameters and response lag in a traditional method are solved by constructing a state sensing, dynamic optimization and accurate execution full-process intelligent control system, and the economic benefit and the product quality of methanol production are remarkably improved.

The utility model discloses a cellulose ether solvent recovery stripping system which comprises a stripping tower (5), and a first ethanol sensor (4) is arranged at the middle lower part of the stripping tower (5); the middle of the stripping tower (5) is connected with the second intelligent steam pump (2) through a pipeline, and the top of the stripping tower (5) is connected with the impurity separator (7) through the second ethanol sensor (6). According to the utility model, the ethanol content in the cellulose ether from the middle to the bottom of the stripping tower (5) is timely adjusted and saved through the ethanol sensor, the product quality of the cellulose ether is controlled, and the cyclic utilization of water and ethanol is realized. The device provided by the utility model solves the problems that the existing process is not suitable for large-scale production, the product quality cannot be monitored in time and the production progress cannot be adjusted in time, and has a good application prospect.

The invention discloses a heavy hydrocarbon catalytic cracking method and a heavy hydrocarbon catalytic cracking device, which are used for producing a carbon material raw material while increasing the yield of low-carbon olefin, improving the yield and selectivity of ethylene, propylene and butylene, reducing the yield of methane, reducing the content of ethanol in the product to the greatest extent and realizing low-cost conversion of ethanol into low-carbon olefin. The method can realize high-selectivity conversion of olefin and ethanol into low-carbon olefin, solves the problem of overhigh yield of ethanol cracking methane, maximally obtains ethylene and propylene, improves the selectivity of methane and coke, and realizes efficient utilization of ethanol and fossil resources.