66 results about "Glyceryl triacetate" patented technology

The invention relates to the technical field of glycerol triacetate preparation, in particular to an esterification phase splitter for preparing glycerol triacetate, which comprises a tower tray arranged in a rectifying tower, umbrella-shaped covers are uniformly distributed on the upper surface of the tower tray, and the tower tray comprises a movable tray, a fixed tray, a riser and an adjusting mechanism. By optimizing the structure of the umbrella-shaped cover and the design of the adjusting mechanism, the problems of a viscous layer and entrainment caused by high viscosity of glycerol triacetate are solved, by reducing the diameter of the bottom of the umbrella-shaped cover and reducing the comprehensive height of the overflow weir, the liquid flowing space is enlarged, the liquid retention time is shortened, and by forming an air inlet groove and an adjusting hydraulic oil cylinder, the liquid retention time is shortened. The gas-phase flow area is increased, gas-liquid contact is optimized, entrainment is reduced, through adjustment of the hydraulic oil cylinder, adaptation to the requirements of different reaction stages is achieved, the height of the downcomer is increased, and the flooding risk is reduced.

The invention discloses an amorolfine hydrochloride liniment and a production process. The formula of the amorolfine hydrochloride liniment comprises amorolfine hydrochloride, ethanol, propylene glycol, polyethylene glycol, acrylic resin RL100, glyceryl triacetate, ethyl acetate and butyl acetate. The preparation method comprises the following steps: 1, selecting a solvent material; step 2, generation of an amorolfine raw material; step 3, synthesizing amorolfine hydrochloride; step 4, preparation of the liniment; step 5, quality control; and step 6, packaging and storing. The amorolfine hydrochloride liniment based on the acrylic resin RL100 as the coating and framework material is designed, the specific release requirement of the medicine can be effectively met, ultraviolet rays can be absorbed, erosion of the ultraviolet rays can be effectively resisted, and the service life of the medicine is prolonged; meanwhile, the propylene glycol component is added, so that the stability and solubility of the medicine and the permeability of the medicine are improved; the polyethylene glycol component is also added, so that the smearing property and the use experience of the medicine can be improved.

The utility model discloses an automatic control system for an esterification process in a glyceryl triacetate production process, which is characterized in that esterification materials are sequentially added into an esterification reactor through an esterification feeder; the esterification preheater, the esterification heater and the esterification cooler are used for regulating and controlling the temperature of a processing material in the esterification reactor, and the variable-speed mixer is used for stirring and mixing the processing material in the esterification reactor at variable speed; a driver is fixedly mounted on the upper surface of the esterification reactor, a stirring rod is connected to the lower output end of the driver, and a temperature controller is mounted outside the esterification reactor in a sleeving manner; a bearing frame is fixed to the outer side of the esterification reactor, a storage box is embedded in the upper portion of the bearing frame, and the upper portion of a conveying pipe is connected with a feeding pipe through a conveying pump. The automatic control system for the esterification process in the glyceryl triacetate production process is provided with the waste heat utilization mechanism and the speed-limiting stirring mechanism, so that the esterification production efficiency of glyceryl triacetate is improved.

The invention relates to the technical field of cigarette manufacturing, and discloses cigarette filter stick forming paper containing bamboo ultrafine powder and a preparation method thereof, the cigarette filter stick forming paper comprises the following raw materials by mass: 40-60 parts of wood pulp cellulose, 0-35 parts of tobacco stem ultrafine powder, 10-30 parts of bamboo ultrafine powder, 20-30 parts of a modified calcium carbonate filler, 12-16 parts of essence and 1-6 parts of a cigarette paper additive; the modified calcium carbonate is obtained by compounding calcium carbonate with zeolite powder and then modifying with glyceryl triacetate. By means of the method, smoke can have the fresh and sweet fragrance of bamboos, the smoke is enriched, the smoke state and the fragrance style are improved, offensive odor and irritation of tobaccos are reduced, and the smoking quality of cigarettes is improved.

The invention discloses a drag reduction composition, a preparation method thereof and a pipeline drag reducer. The drag reduction composition comprises the following components in parts by mass: 10-21 parts of a polymethacrylate compound, 6-18 parts of a dispersing agent and 2-9 parts of a lubricating agent, the lubricant is prepared from one or more of glycerol triacetate, glycerol tripropionate, pentaerythritol tetraacetate and dipentaerythritol hexaacetate. The drag reduction composition provided by the invention comprises the polymethacrylate compound matched with the dispersing agent and the specific lubricant, and the components jointly form a suspension system with stable properties, so that the degree of freedom of motion among polymer molecules can be increased, and the occurrence of an agglomeration phenomenon is reduced. When the drag reduction composition is added into a pipeline containing crude oil or product oil, polymer molecules can be stretched, folding and curling phenomena of the polymer molecules can be reduced, and a good drag reduction effect can be quickly achieved.

The present invention relates to the technical field of heated cigarettes, and in particular to a spicy-flavored tobacco flavor for heated cigarettes and heated cigarettes. The tobacco flavor includes, by mass, 0.1-1.5 parts of main aroma components, including Chinese cinnamon bark oil, cinnamic acid, cinnamaldehyde, piperonal, benzyl cinnamate and isoamyl cinnamate; 5.0-14.0 parts of modified components, including plum extract, ethyl acetate, furfural, methylcyclopentenolone, benzaldehyde, phenylacetic acid, vanillin and ethyl vanillin; fixative: 2.0-5.0 parts, the fixative components include Peruvian extract and triacetin; solvent 75.0-93.0 parts. The tobacco flavor can overcome the problems of large taste irritation and obvious spiciness of existing spicy-flavored raw material flavors, and effectively improve and enrich the quality of the suction aroma while giving the heated cigarette a spicy style, and improve the consistency and persistence of aroma release.

The invention relates to the technical field of sustained-release capsules, and particularly discloses a tamsulosin sustained-release capsule based on an instant coating and a preparation method of the tamsulosin sustained-release capsule. Comprising the following steps: S1, taking microcrystalline cellulose and talcum powder, and mixing to obtain a dry material; adding tamsulosin hydrochloride into water to prepare a liquid medicine; taking the methacrylic acid-ethyl acrylate copolymer dispersion liquid, adding glycerol triacetate and sodium carboxymethyl cellulose, and uniformly stirring to obtain a granulation dispersion liquid; s2, preparing pellets from the liquid medicine, the dry material and the granulation dispersion liquid; s3, taking the methacrylic acid-ethyl acrylate copolymer dispersion liquid, adding water, glycerol triacetate and the modified polyacrylate emulsion, and uniformly stirring; adding talcum powder, and uniformly stirring to obtain a coating solution; coating the pellets with a coating solution to obtain coated pellets; and S4, mixing talcum powder, calcium stearate and the coated pellets, and filling capsules with the mixture to obtain the tamsulosin sustained-release capsules.

The invention relates to the technical field of oral care products, in particular to an oral care product compatible with capsules and a preparation method of the oral care product. The invention discloses an oral care composition compatible with capsules. Raw materials of the oral care composition comprise conventional components and skeleton components, the skeleton component is prepared from the following components in parts by weight: 10 to 80 parts of poloxamer, 0.1 to 1 part of carbomer, 0.1 to 1 part of polyvinylpyrrolidone and 5 to 20 parts of glyceryl triacetate; the conventional components comprise 10-30 parts of an abrasive and 1-3 parts of a surfactant. According to the technical scheme, the technical problem that an existing oral care product which is ideal in cleaning effect and fresh and cool in taste is not ideal in compatibility with a capsule shell can be solved. According to the technical scheme, the poloxamer, the polyvinylpyrrolidone, the carbomer and the glyceryl triacetate are jointly used to form a skeleton component, so that the compatibility of the inner material and the capsule shell is improved, and the oral care product which is compatible with the capsule shell, fresh and cool in taste and stable in inner material is formed, so that the satisfaction degree of consumers is improved.

SOLVENT COMPOSITIONS The present invention relates to a solvent composition for solvent-based paints or other coatings characterized in that it comprises a combination of dimethyl glutarate and at least one other compound selected from isobutyl acetate, ethyl lactate, dimethyl 2-methylglutarate, 2-methyltetrahydrofuran, ethyl acetate, cyclopentyl methyl ether, dithoxymethane, dimethyl carbonate, dimethyl succinate, benzyl alcohol, dimethyl adipate, and glyceryl triacetate. Fig. 1

The utility model belongs to the technical field of chemical equipment, and particularly discloses an efficient esterification reaction system for glyceryl triacetate. The system comprises an esterification tower and an esterification tank, a heater is arranged in the middle or the lower portion in the esterification tank, a feeding port II is formed in the bottom of the esterification tank, an evaporation port II is formed in the top of the esterification tank, a discharging port is formed in the bottom of the esterification tower, and an evaporation port I is formed in the top of the esterification tower. The lower part or the middle part of the esterification tower is provided with a feed port I, the feed port I is communicated with the evaporation port II through a pipeline II, one side or the bottom of the esterification tank is provided with a feed pipe, the feed pipe is communicated with a batching device or an ester separator at the upper part of the esterification tower, and the discharge port is higher than the feed port II. According to the utility model, the two stages of esterification devices are arranged, and the discharge hole of the esterification tower is communicated with the bottom of the esterification tank, so that the esterification efficiency can be improved, the reaction is more sufficient, and the energy consumption can be reduced.

The utility model provides a dehydration device for glyceryl triacetate production, which relates to the technical field of dehydration devices and comprises a dehydration mechanism, a cooling mechanism is fixedly mounted at the top of the dehydration mechanism, and the dehydration mechanism comprises a reaction tank. According to the utility model, under the action of the dehydration mechanism, when the reaction tank heats glyceryl triacetate in the reaction tank, the motor is started to drive the group of stirring paddles to rotate through the rotating shaft, so that the heating area of the glyceryl triacetate is increased, the evaporation speed of internal water is increased, and at the moment, the vacuum pump pumps out air in the reaction tank; through the structure and the method, the equipment can complete the dehydration task in a short time, so that the energy consumption is reduced, the energy use cost is reduced, the dehydration speed is increased, the production cycle can be shortened, the retention time of materials in the equipment is shortened, and the yield is increased.

The invention provides a long-acting microsphere sustained release preparation and a preparation method thereof, and belongs to the technical field of sustained release preparations, the long-acting microsphere sustained release preparation is prepared from the following raw materials of effective components: 9.5 to 10.5 parts of antipsychotic drug, 48 to 50 parts of hydroxypropyl-beta-cyclodextrin, 50 to 52 parts of polylactic acid-glycolic acid copolymer, 1.25 to 1.3 parts of glycerol triacetate and 10 to 11 parts of polyvinyl alcohol. The preparation method comprises the following steps: firstly, the hydroxypropyl-beta-cyclodextrin is used for clathration of the antipsychotic drug, the obtained clathrate compound is further clathrated by the polylactic acid-glycolic acid copolymer, and the long-acting microsphere sustained release preparation is obtained. According to the invention, the double-valve design of beta-CD and PLGA synergistic inclusion is utilized, so that the preparation can realize two-stage release; the macroscopic slow release characteristic of the PLGA is combined with the microcosmic express characteristic of the hydroxypropyl-beta-cyclodextrin, so that the technical limitation of a single carrier is broken through.

The utility model provides a continuous synthesis device for glyceryl triacetate, which relates to the technical field of glyceryl triacetate and comprises a moving mechanism, and the outer wall of the moving mechanism is fixedly connected with an equipment component; according to the moving mechanism, electric push rods are fixedly installed on the outer walls of fixed plates, the shaft ends of the electric push rods are fixedly connected with a set of movable plates, connecting columns are fixedly connected to the inner walls of the movable plates, dampers are fixedly installed on the inner walls of the connecting columns, springs are arranged on the outer walls of the dampers in a sleeving mode, and the springs are fixedly connected with the connecting columns. The shaft ends of the dampers are fixedly connected with connecting plates, and the inner walls of the connecting plates are rotationally connected with rotating rods. According to the utility model, the fixed plate, the electric push rod and the PLC are arranged, so that the supporting plate can be jacked up, and meanwhile, moving power is provided for the supporting plate by virtue of the movable plate, the double-shaft motor, the rotating rod and the rubber rollers, so that the supporting plate can move in a short distance in a workshop, and manual carrying or dependence on professional carrying equipment is avoided.

The utility model provides a glycerol triacetate cooling crystallization device, which relates to the technical field of cooling crystallization devices, and comprises a mixing assembly, the mixing assembly comprises a connecting rod arranged in an inner cavity of a reaction kettle body, a supporting rod is fixed on the side surface of the connecting rod, and a first stirring rod is fixed on the side surface of the supporting rod; a first scraping plate is fixed to one end of the first stirring rod, a second stirring rod is fixed to the bottom of the connecting rod, and a first guide groove is formed in the side face of the second stirring rod. By arranging the reaction kettle body, a reaction space can be provided for the reaction of glycerol triacetate, and by arranging the jacket layer, glycerol triacetate can be subjected to cooling crystallization processing; according to the reaction kettle, a supporting rod can be supported by arranging a connecting rod, glycerol triacetate can be mixed by arranging a first stirring rod, and glycerol triacetate attached to the inner wall of the reaction kettle body can be scraped off by arranging a first scraping plate.

The utility model provides a degassing and homogenizing device for glycerol triacetate, and relates to the technical field of additives for cigarettes. The utility model aims at fully mixing glycerol, acetic acid and other raw materials before reaction and degassing glycerol triacetate after reaction so as to improve the production efficiency and quality of the product. The device comprises raw material homogenizing treatment equipment, esterification reaction equipment and finished product degassing treatment equipment, the raw material homogenizing treatment equipment and the finished product degassing treatment equipment are respectively arranged at the front end and the rear end of the esterification reaction equipment, the raw material homogenizing treatment equipment is communicated with the inlet end of the esterification reaction equipment through a conveying pipeline, and the finished product degassing treatment equipment is communicated with the outlet end of the esterification reaction equipment through a conveying pipeline; the homogenizing equipment disclosed by the utility model can effectively promote the mixing uniformity of raw materials such as glycerol and acetic acid, improve the esterification reaction degree and reaction efficiency and shorten the reaction time; and the degassing treatment can effectively improve the transparency and purity of the product.

The invention belongs to the technical field of processing of fresh flour products. Specifically, the invention provides a preparation method of a fresh wet flour product, and more specifically provides a method for inhibiting browning, black spots and / or anti-water adhesion of a raw wet flour product, and the method comprises a step of preparing the raw wet flour product by using a dough containing glyceryl triacetate; wherein based on the total weight of the flour used for preparing the dough, the content of the glyceryl triacetate is 0.05 to 0.5 weight percent, preferably 0.05 to 0.3 weight percent or 0.2 to 0.3 weight percent. According to the present invention, the formula and the process are simple, the cost is low, the good inhibition effect on the black spots appearing during the storage period of the flour products, especially the fresh and wet noodles, and the darkening of the whole color can be provided, and the significant effect on the color protection of the fresh and wet noodles within the shelf life can be provided, such that the produced fresh and wet noodles have characteristics of bright yellow color, no black spots, and no browning during the storage period.

The invention discloses glycerol triacetate and a preparation method thereof, and relates to the technical field of glycerol triacetate, and the preparation method comprises the following steps: stirring and mixing polycitric acid and polycaprolactone according to a ratio to obtain a slow-release polymer matrix, stirring and mixing purified water, ethanol, citric acid, vitamin E and propylene glycol according to a ratio to obtain a composition, and preparing the glycerol triacetate. Stirring and mixing the first-class composition and glycerol triacetate according to a proportion to obtain a second-class composition, and stirring and mixing the second-class mixture and a sustained-release polymer matrix in a container to obtain the glycerol triacetate composition; the attractant can continuously act for a long time, the requirement for frequent replacement is reduced, the use efficiency is improved, the attractant can keep the effect under different environment temperatures and humidity, the attractant is still effective under variable weather conditions, the preparation process of the attractant is optimized by adjusting the stirring speed and the mixing time so as to adapt to a specific use environment, and the attractant has good application prospects. And the optimal emission effect is ensured.

The invention discloses a heat-resistant composite flavor coffee essence and a preparation method thereof. The preparation method comprises the following steps: firstly, mixing medium and deep baked coffee bean powder with a solvent compounded by propylene glycol and glycerol triacetate according to a specific mass ratio, and efficiently extracting flavor by utilizing an enzymolysis-ultrasonic synergistic technology; then carrying out gradient high-temperature strengthening treatment to activate the flavor precursor and promote the Maillard reaction; then, carrying out multi-stage purification and separation to obtain a clarified extract; and finally, carrying out molecular stabilization treatment in a low-temperature environment, and compounding the coffee essence base consisting of key components such as pyrazines, mercaptans and furans. Through the synergistic effect of a compound solvent, gradient temperature control and a low-temperature stabilization technology, efficient synergistic extraction of flavor components in a wide polarity range is realized, and the thermal stability of the essence is remarkably improved. The flavor retention rate of a coffee beverage prepared from the coffee essence is greater than or equal to 95% after the coffee beverage is treated at 120 DEG C for 15 minutes, and the aroma level is rich and harmonious.

The invention relates to the technical field of hygienic products, and particularly discloses a special wet tissue for barbecue and a preparation method thereof. The special wet tissue for barbecue comprises a wet tissue carrier and wet tissue compound liquid, the wet tissue compound liquid takes an ethanol water solution as a solvent; a solute of the wet tissue compound liquid mainly comprises the following raw materials: fatty alcohol-polyoxyethylene ether, glyceryl triacetate, sodium cocoyl aminopropionate, lauramidopropyl betaine, dodecyl maltoside, polyvinylpyrrolidone, polyethylene glycol, didecyl dimethyl ammonium chloride, benzalkonium chloride, iodopropynyl butylcarbamate, a chelating agent and a foam inhibitor. The special wet tissue for barbecue has the advantages of being good in sterilization effect, high in dirt-removing power and good in cleaning effect, is suitable for cleaning the surfaces of barbecue tools such as a barbecue tray, a barbecue grill and a barbecue cover, and meets market requirements.

The invention provides a ketorolac patch composition, a ketorolac patch as well as a preparation method and application of the ketorolac patch. The ketorolac patch composition comprises an active component, a matrix material and a transdermal enhancer, the transdermal enhancer comprises at least two of lactic acid, oleic acid, phosphoric acid, tartaric acid, citric acid, fumaric acid, malic acid, isopropyl myristate, propylene glycol monolaurate, glyceryl monolinoleate, glyceryl triacetate, diisopropyl adipate, triethyl citrate, polyglycerol oleate and sorbitan oleate (Span 80); preferably, the transdermal enhancer is prepared from at least two of isopropyl myristate, triethyl citrate, polyglycerol oleate, glyceryl triacetate, oleic acid, sorbitan oleate (Span 80), lactic acid and citric acid; the transdermal enhancer provided by the invention comprises the compounding of at least two of the substances, so that the transdermal diffusion performance of the ketorolac patch composition can be greatly improved.

This invention provides a distillation and dehydration apparatus for the preparation of triacetin, comprising a distillation column, a water inlet, an exhaust outlet, a cooking furnace, and a condenser. The distillation column is movably mounted on top of the cooking furnace, and the exhaust outlet is connected to one side of the top of the distillation column. This invention facilitates the containment of thickened oils during distillation, preventing rapid loss and resulting in a smaller amount obtained through distillation. It addresses existing problems where excessively high concentrations of steam are directly condensed during esterification, affecting subsequent condensation rates and causing some triacetin raw material to be lost with the steam, leading to waste. Furthermore, incomplete removal of the extracted esterified raw material after cooking can affect the efficiency of subsequent cooking. Additionally, some raw material drawn into the column may remain in the pipes and on the column sidewalls, and the esterified raw material mist in the steam cannot be utilized, increasing production costs.

The invention belongs to the technical field of glyceryl triacetate production and purification, and discloses a dehydration and deacidification device for glyceryl triacetate production, which comprises a treatment cylinder, a negative pressure pump fixed on the outer side of the treatment cylinder, and a condensation part arranged in the treatment cylinder, the condensation part comprises a cooling storage cavity, an isolation conduction plate, a condensation pipe and a through hole formed in the isolation conduction plate. According to the invention, depressurization distillation and azeotropic distillation are respectively adopted before and after, acetic acid removal and moisture removal are respectively completed, and directional deflection of the distribution condensation collection assembly is matched, so that products in two distillation treatment processes are successfully and effectively separated, independent separation and export of acetic acid removal are realized, and directional separation and collection of subsequent moisture are realized; the condition that acetic acid and water are mixed together after being separated is avoided, independent separation and export treatment is achieved, rapid export and separation are achieved through cooperation of the distribution condensation collection assembly and the distribution export assembly after separation, additional drainage operation is avoided, and the separation effect is good.

The invention relates to the technical field of sustained-release capsules, and specifically discloses a tamsulosin sustained-release capsule based on a quick-dissolving coating and a preparation method thereof; the method comprises the following steps: S1: taking microcrystalline cellulose and talcum powder, mixing to obtain a dry material; adding tamsulosin hydrochloride into water to prepare a drug solution; taking a methacrylic acid-ethyl acrylate copolymer dispersion, adding triacetin and sodium carboxymethyl cellulose, stirring evenly to obtain a granulation dispersion; S2: preparing micropills with the drug solution, the dry material and the granulation dispersion; S3: taking a methacrylic acid-ethyl acrylate copolymer dispersion, adding water, triacetin and a modified polyacrylate emulsion, stirring evenly; adding talcum powder, stirring evenly to obtain a coating solution; coating micropills with the coating solution to obtain coated micropills; S4: taking talcum powder, calcium stearate and coated micropills, mixing, and filling into capsules to obtain tamsulosin sustained-release capsules.

The invention discloses a quantitative detection method for carbonyl compounds in roasted mutton, and belongs to the technical field of meat flavor substance detection. According to the method, 18 carbonyl compounds in the roasted mutton are quantitatively detected at the same time, solid-phase microextraction is firstly adopted for derivation on fibers, and then GC-MS / MS is combined for quantitative detection of the 18 carbonyl compounds at the same time. According to the method, an internal standard curve method is adopted, and an internal standard curve is configured in a roasted mutton odorless matrix system. The method comprises the following steps: respectively weighing blank reagent water, glyceryl triacetate and the matrix without the target compound in the meat product to prepare the odorless matrix for the meat product, wherein the blank reagent water, the glyceryl triacetate and the matrix without the target compound in the meat product are respectively weighed; the method is accurate in quantification, high in sensitivity and low in detection limit, and can be widely applied to efficient and sensitive detection of carbonyl compounds in meat products.

The invention provides a degradable polylactic acid-based human cell sampling brush wire material and a preparation method thereof, and relates to the technical field of preparation of medical supplies. The degradable polylactic acid-based human cell sampling brush wire material is prepared from the following raw materials: a composite modified material, polyethylene glycol, a plasticizer and an antibacterial agent, the composite modified material is obtained by mixing a product A prepared from polylactic acid and maleic anhydride and a product B prepared from polylactic acid and PBAT and then carrying out ultraviolet treatment, the plasticizer is one of glyceryl triacetate and acetyl tri-n-butyl citrate, and the antibacterial agent is chlorhexidine. The mechanical property of the prepared cell extraction brush wire material is improved while the existing characteristics of polylactic acid are not influenced, the elastic recovery rate is particularly improved, the cell extraction brush wire material has better elasticity and structural stability, and the structural stability and operability are kept when the cell extraction brush wire material is used for sampling positions such as cervix uteri; and the application value in cell extraction operation tools is comprehensively improved.

The invention belongs to the technical field of glycerol triacetate storage devices, and particularly relates to a glycerol triacetate storage barrel with a self-cooling function, which comprises a main barrel body, two first supporting blocks are fixedly arranged in the main barrel body, a first auxiliary barrel body is placed on the two first supporting blocks, and the first auxiliary barrel body is in sliding connection with the main barrel body; and the upper side of the first auxiliary barrel body penetrates through the main barrel body, two second supporting blocks are fixedly connected into the first auxiliary barrel body, a second auxiliary barrel body is placed on the two second supporting blocks, and the second auxiliary barrel body is slidably connected with the first auxiliary barrel body. According to the storage device, height self-regulation can be conducted according to the amount of stored glycerol triacetate, so that the storage device can adapt to transport carriages of different heights, meanwhile, in high-temperature weather in summer, heat dissipation and temperature control can be conducted on glycerol triacetate automatically, and the transport quality of glycerol triacetate is guaranteed.

The utility model relates to the technical field of esterification reaction, and particularly discloses a glycerol triacetate anti-accumulation esterification reaction device which comprises a reaction box, the reaction box is arranged to be a cylindrical shell with a semicircular structure at the bottom, and a motor is mounted on the surface of the reaction box; a feeding box is mounted on the surface of the reaction box, a rotating mechanism is arranged in the reaction box, and the rotating mechanism comprises a first rotating rod and a second rotating rod which are rotationally mounted in the reaction box, and a first stirring rod is connected to the surface of the first rotating rod. According to the glycerol triacetate anti-accumulation esterification reaction device, the rotating mechanism is arranged, internal raw materials can be prevented from being accumulated, a motor drives a first rotating rod and a second rotating rod to rotate at the same time through a gear, a first stirring rod and a second stirring rod inside rotate at the same time, the internal raw materials are stirred more sufficiently, the raw materials make full contact with a catalyst, and the esterification reaction efficiency is improved. And meanwhile, the scraping plate can drive the catalyst on the surface of the bearing plate to be thrown out.

The invention provides an industrial control method and system for a glyceryl triacetate production process, and relates to the technical field of industrial control, and the method comprises the steps: obtaining a current control variable of glyceryl triacetate; outputting a prediction state variable under the current control variable by using an LSTM model with a decoupling cumulative effect; determining a state space of each current control variable; determining an action space of the current control variable adjustment amount in combination with a data-driven Lyapunov function; establishing an optimization target under the conditions that the predicted acid value reaches the expected acid value and the predicted glyceryl triacetate product concentration reaches the expected glyceryl triacetate product concentration in the shortest reaction time; in combination with the state space and the action space, solving the optimization target by using a random selection strategy to obtain an optimal decision variable about the current control variable adjustment amount; and correcting the current control variable according to the optimal decision variable. And the production speed is increased while the production quality is ensured.

The invention discloses a preparation method of high-content glyceryl triacetate, belongs to the technical field of glyceryl triacetate processing, and is used for solving the technical problems that the content, the chromaticity and the conversion rate of glyceryl triacetate prepared by catalysis and the cyclic catalytic stability of a catalyst need to be further improved in the prior art. The invention relates to a preparation method of high-content glyceryl triacetate, which comprises the following steps: mixing butyl titanate, tetraethoxysilane, hydroxymethyl triethoxysilane, sulfonated porous carbon and absolute ethyl alcohol, carrying out ultrasonic dispersion for 30-50 minutes, and raising the temperature of a reaction system to 50-60 DEG C; porous biochar is prepared from corncobs, the porous biochar is sulfonated and activated through a sulfonating agent and then is loaded with Ti-O-Si, then a layer of acetate modifier is modified on the Ti-O-Si, and an esterification catalyst is prepared, so that the content, the chromaticity and the conversion rate of glyceryl triacetate are effectively improved; and the esterification catalyst also has good cyclic catalysis stability.

The invention provides a detection method for simultaneously determining PG (1, 2-propylene glycol), VG (glycerol), ethanol and glycerol triacetate in essence, and a method for simultaneously detecting four substances is not inquired at present, so that the method for simultaneously determining PG (1, 2-propylene glycol), VG (glycerol), ethanol and glycerol triacetate in essence is established for the first time, and specific sample treatment conditions are adopted, so that the method for simultaneously determining PG (1, 2-propylene glycol), VG (glycerol), ethanol and glycerol triacetate in essence is established. GC-FID analysis conditions are as follows: methanol is used as a solvent to dissolve and disperse a sample, and the method is suitable for electronic cigarette liquid essence of various carriers; a polar chromatographic column with polyethylene glycol as a stationary phase is adopted, four target analytes can be well separated under the temperature programming condition, the four target analytes can completely generate peaks within 20 minutes, the operation is simple, and the analysis is rapid.