56 results about "Triacetin" patented technology

The invention provides a glyceryl triacetate production parameter control method and system based on reinforcement learning, and relates to the technical field of optimization control methods, and the method comprises the steps: obtaining the production parameters of glyceryl triacetate; based on the kinetic model, constructing a kinetic equation of the esterification reaction of glycerol and acetic acid; constructing a digital twinborn simulation environment of the glyceryl triacetate production process; defining a reinforcement learning framework by taking a digital twin simulation environment as a scene; according to the reinforcement learning framework, taking the Elman neural network as a state predictor, and predicting the state of the glyceryl triacetate; solving the reinforcement learning framework through an MO-MPO algorithm, and determining an optimal control strategy and an optimal production parameter sequence corresponding to the optimal control strategy; judging whether the process capability index is smaller than a process capability index threshold value or not; if yes, continuing to solve the reinforcement learning framework; otherwise, outputting an optimal production parameter sequence; and controlling the optimal production parameter sequence through a PID (Proportion Integration Differentiation) control algorithm.

Provided are a smoking article filter and a smoking article. The smoking article filter includes lyocell tow including lyocell fibers and a phenol reducing material dispersed in the lyocell tow, wherein the phenol reducing material includes triacetin (TA), and the content of the triacetin (TA) ranges from 0.10 mg to 1.50 mg per length (mm) of the lyocell tow.

A method for manufacturing polyvinyl alcohol fibers, comprising the steps of: providing a polyvinyl alcohol composition comprising: a homo-polyvinyl alcohol having a degree of hydrolysis of 88% to 98% or more and a weight average molecular weight of 14,000 to 22,000; a plasticizer selected from the group consisting of diglycerol, triglycerol, fructose, ribose, xylose, D-mannitol, triacetin, pentaerythritol, dipentaerythritol, methyl pentanediol, 1, 2-propanediol, 1, 4-butanediol, 2-hydroxy-1, 3-propanediol, 3-methyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3 the component A is prepared from 1, 2-butanediol, polyethylene glycol 300, polyethylene glycol 400, alkoxylated polyethylene glycol, caprolactam, tricyclic trimethylolpropane methylal, abietate, erucyl amide and a mixture of 1, 2-butanediol, polyethylene glycol 300, polyethylene glycol 400, alkoxylated polyethylene glycol and caprolactam; and an optional stabilizer selected from the group consisting of sodium stearate, potassium oleate, sodium benzoate, calcium stearate, stearic acid, dimethyl, propionic acid, and mixtures thereof; melting the composition at a temperature of 200 DEG C to 230 DEG C to form a molten polymer; extruding the molten composition to form an extrudate; forming the extrudate into molten fibers; and solidifying the molten fibers to form solid fibers.

Orally administered compositions comprising triacetin are presented that increase the concentration of short chain fatty acids in the gut, namely acetic acid, wherein the compositions comprising triacetin are palatable at desirable concentrations. The triacetin formulations can also be orally administered to a dysbiotic subject to increase short chain fatty acid (SCFA) concentrations in the gut of the subject while substantially avoiding gas production in the subject. Advantageously, administration of contemplated compositions also increases gut barrier integrity and helps restore a balanced gut microbiome.

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.

A filter material is shown comprising a cellulose fiber-based substrate, an additive and an adhesion promoter, wherein the mass ratio of the additive and the adhesion promoter is at least 1:3 and at most 2:1, and the additive and the adhesion promoter together constitute at least 3% and at most 40% of the mass of the cellulose fiber-based substrate, wherein the additive is triethyl citrate, triacetin or a mixture of these substances, and wherein the adhesion promoter is selected from the group consisting of ethanediol, propanediol, butanediol, pentanediol and glycerin diacetate or mixtures thereof.

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.

Proposed are preparations comprising (i) a mixture of substances comprising (a) one, two or more compounds selected from the group consisting of (a1) alcohol monoterpenes of the formula (I) where R1 is H or methyl, R2 is H or C2-alkenyl, and R3 is a linear or branched, saturated or unsaturated hydrocarbon radical having 4 to 10 carbon atoms, and their enantiomers, diastereomers, racemates, solvates and physiologically acceptable salts, and / or (a2) bicyclic epoxy monoterpenes, (b) at least two lactones of the formula (II) where R4 is H or methyl, R5 is a linear or branched, saturated or unsaturated hydrocarbon radical having 2 to 10 carbon atoms and n is the number 1 or 2, and their enantiomers, diastereomers and racemates, and (c) one, two or more Solvent selected from the group consisting of ethanol, water, dipropylene glycol (DPG), diethyl phthalate (DEP), propylene glycol (PG),Isopropyl myristate (IPM), isopropyl palmitate (IPP), triethyl citrate (TEC), triacetin (TRI), 1,2-propanediol, 1,3-propanediol, propanetriol, pentanediol, hexanediol, octanediol, decanediol, dodecanol, 4-hydroxyacetophenone, butylene glycol, pentylene glycol, hexylene glycol, decylene glycol, propylene carbonate, butylene carbonate, glycerol carbonate, 2-benzylheptanol, trimethyl hydroxypentyl isobutyrate, glyceryl caprylate, ethylhexylglycerin, benzyl benzoate (BB), and optionally (d) further flavorings or fragrances selected from the group consisting of 3-phenylbutanal, acetylmethylcarbinol, anethole, anisyl acetate, dihydroeugenol, linalyl formate, 2-methyldecanal, 2-Benzyl-2-methylbut-3-ene nitrile, 3-hexenyl acetate, styralyl acetate, citronellal, cinnamyl acetate, rhubafuran, betalonone, anther, prenyl acetate, 2-phenylpropanal, 4-(4-hydroxyphenyl)butan-2-one, ethylphenoxyacetate, isoraldein, gamma-terpinene, Limonene, Neocyclocitral, Methyl Lavender Ketone, Styralyl Propionate, Phenyl Ethyl Propionate, Limonenal,4-Isopentylcyclohexanol, 4-methyl-2-phenyl-3,6-dihydro-2H-pyran / 4-methylene-2-phenyl-tetrahydropyran, hydrocitronitrile, phenoxanol, isoamylphenyl acetate, damascone, silvial, nectaryl, ambroxide, acetylpyrazine, trimethylpyrazine, isoamyl acetate, cresyl methyl ether para, filbertone, cyclohexyl acetate, heliotropin, acetophenone, anisaldehyde, methylacetophenone para, veratraldehyde, methyl anisate and vertoprenal, and (ii) aldehydes of the formula (III) where R6 is a saturated or unsaturated, linear hydrocarbon radical, and / or (iii) free fatty acids of the formula (IV) where R7 is a linear or branched, saturated hydrocarbon radical.

The utility model relates to the technical field of glyceryl triacetate production, and discloses a glyceryl triacetate storage tank which comprises a storage tank body, a feeding pipe fixedly connected to the top of the storage tank body, a temperature sensor fixedly connected to the top of the storage tank body and an exhaust balance valve fixedly connected to the top of the storage tank body. A stirring device is arranged in the storage tank, an adjusting device is arranged on the left side of the storage tank, a supporting rod is fixedly connected to the bottom of the storage tank, and a discharging pipe is fixedly connected to the bottom of the storage tank. Cold water or hot water is flexibly injected through the water inlet in the top of the water storage tank, after the water pump is started, water in the water storage tank is continuously pumped into the water storage layer between the outer layer and the inner plate of the material storage tank through the water inlet pipe, efficient heat exchange is conducted on the water and materials in the tank, heating or cooling is achieved, and then the water obtained after heat exchange flows back to the water storage tank through the water outlet pipe. The temperature is accurately regulated and controlled through a circulation mechanism, and it is ensured that the glyceryl triacetate is at the ideal storage temperature.

The invention describes a method for the manufacture of a plasticized polyvinyl alcohol polymer mixture including the steps of: introducing into a mixing reactor a polyvinyl alcohol polymer comprising homopolymeric polyvinyl alcohol or a blend thereof having a degree of hydrolysis in the range of 93% or greater more; where the plasticizer comprises two or more compounds selected from the group consisting of diglycerol, triglycerol, xylose, D-mannitol, triacetin, dipentaerythritol, 1,4-butanediol, 3,3-dimethyl-1,2-butanediol, and caprolactam; reacting the water, the plasticizer and the polyvinyl alcohol polymer in the reaction zone to form the plasticized polymer; and allowing the plasticized polyvinyl alcohol polymer to pass from the primary outlet.

The present application belongs to the technical field of textiles, and specifically discloses a kind of embroidery with PU layer and its processing technology.The embroidery with PU layer includes mesh layer and PU layer, and the PU layer, by weight, includes the following raw materials: 60 80 parts of polyether polyols, 50 70 parts of 2,4 toluene diisocyanate, 6 15 parts of vinyl trimethoxy silane, 25 35 parts of modified talc, 13 20 parts of modified glass fiber, 7 13 parts of triacetin and 9 15 parts of graphene.The embroidery with PU layer prepared by the present application has higher mechanical strength, tear resistance and elasticity, and subsequently contributes to embroidery process, so that the insertion of needle and thread or penetration of PU layer, PU layer is also not easy to tear.

A method of making a nonwoven product comprising polyvinyl alcohol fibers, the method comprising the steps of: providing a polyvinyl alcohol composition comprising a homo-polyving akohol having a degree of hydrolysis of 88 wt% to 98 wt% or more and a molecular weight of 22,000 to 38,000; a plasticizer selected from the group consisting of diglycerol, triglycerol, fructose, ribose, xylose, D-mannitol, triacetin, pentaerythritol, dipentaerythritol, methyl pentanediol, 1, 2-propanediol, 1, 4-butanediol, 2-hydroxy-1, 3-propanediol, 3-methyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3, 3-dimethyl-1, 3-butanediol, 3 the component A is prepared from 1, 2-butanediol, polyethylene glycol 300, polyethylene glycol 400, alkoxylated polyethylene glycol, caprolactam, tricyclic trimethylolpropane methylal, abietate, erucyl amide and a mixture of 1, 2-butanediol, polyethylene glycol 300, polyethylene glycol 400, alkoxylated polyethylene glycol and caprolactam; and a stabilizer selected from the group consisting of sodium stearate, potassium oleate, sodium benzoate, calcium stearate, stearic acid, dimethyl pentanediol, propionic acid, and mixtures thereof; melting the composition at a temperature of 190 DEG C to 250 DEG C; extruding the molten composition to form an extrudate; forming the extrudate into molten fibers; stretching the molten fibers to form individual molten fibers or molten fiber bundles; and solidifying the molten fibers to form solid fibers or solid fiber bundles.

A filter tip for a smoking article and a smoking article are provided. A filter for a smoking article comprises: a lyocell tow comprising lyocell fibers and a phenol-based reducing substance dispersed in the lyocell tow; the phenol reducing substance comprises a mixture of triacetin and a phenol reducing substance, wherein the phenol reducing substance comprises triacetin; tA); the content of the triacetin per 1 mm length of the lyocell tow is from 0.10 mg to 1.50 mg.

The invention relates to the technical field of glyceryl triacetate, and discloses a glyceryl triacetate refining processing reaction device and a processing method thereof.The device comprises a refining kettle, a condenser and a receiving tank, the refining kettle is communicated with the condenser through a distillation pipe, and the condenser is communicated with the receiving tank through a fraction guide pipe; a heat conduction sleeve is assembled on the outer side of the refining kettle in a sleeving mode, an oil discharging device is integrally formed at the bottom of the heat conduction sleeve, a cooling assembly is rotationally assembled in an inner cavity of the refining kettle, and a blocking ring is pushed to move downwards by means of the gravity and injection pressure of cooling water, so that heating oil in a liquid storage cavity is replaced out and discharged out of the oil discharging device; and the discharged heating oil can drive the cooling assembly to drive materials in the refining kettle to rotate and accelerate discharge of fractions, and along with rotation of the cooling assembly, the rotation speed of the materials in the refining kettle can be accelerated, heat dissipation can be accelerated, and the cooling effect can be improved.

The utility model discloses a tow breadth adjusting device which comprises a support, a driving piece, a first limiting assembly, a second limiting assembly and a driving piece controller, the support is arranged in front of an inlet of a glyceryl triacetate spraying box, and the driving piece, the first limiting assembly and the second limiting assembly are all arranged on the support. A channel allowing tows to pass through is formed between the first limiting assembly and the second limiting assembly, the first limiting assembly and the second limiting assembly are connected with the driving part, and the driving part is used for synchronously driving the first limiting assembly and the second limiting assembly to move in the face-to-face / back-to-back mode. The driving part controller is arranged on the opener support and connected with the driving part, and a control button is arranged on the driving part controller and used for controlling the driving part to work or stop. According to the tow breadth adjusting device, the tow breadth can be accurately adjusted under the non-stop condition, and the continuous operation of equipment and the stability of product quality are guaranteed.

The invention relates to the technical field of glycerol triacetate purification, and discloses a glycerol triacetate purification processing device which comprises a cooling tank, a sliding rail is arranged in the cooling tank, a sliding block is slidably arranged in the sliding rail, and a storage tank is fixedly connected to the outer wall of the sliding block. A partition plate is fixedly connected to the interior of the storage tank, the first turning plate is rotatably mounted in the partition plate, a second turning plate is movably connected to the side of the first turning plate, and a movable ball rod is slidably arranged in the second turning plate. A first turning plate and a second turning plate are arranged on a partition plate, when the first turning plate and the second turning plate are kept in a horizontal state, a channel on a first filter screen is blocked, and when the first turning plate and the second turning plate are folded, the channel is opened, solid-liquid separation is achieved, meanwhile, crystallized impurities on the first filter screen are scraped through movement of the second turning plate, and therefore the solid-liquid separation effect is achieved. And the flow rate of liquid is improved.

The invention discloses a low-temperature refining method of glyceryl triacetate, and relates to the field of fine chemical engineering, and the low-temperature refining method comprises the following steps: step 1, preparing a crude glyceryl triacetate in advance, the acidity of the crude glyceryl triacetate being 0.005-0.08%, and the purity of the crude glyceryl triacetate being greater than or equal to 99.0%. By combining multiple synergistic effects of nitrogen protection, the specific adsorbent, the alkaline compound and the phase transfer catalyst, the energy consumption and the production cost are greatly reduced, the acidity of the product is reduced to 0.001% or below, the chromaticity is smaller than or equal to 5, the purity is larger than or equal to 99.5%, the peculiar smell is completely eliminated, and compared with a traditional high-temperature process, the method shortens the reaction time by 50% or above, and the method is suitable for industrial production. Compared with the prior art, the method has the advantages that the production efficiency is obviously improved, meanwhile, the product stability is fundamentally improved, the shelf life is prolonged to 24 months, the problems of acid pantothenic acid, color change and the like in the storage and transportation processes are effectively solved, and the method is particularly suitable for production of food-grade high-purity glyceryl triacetate and long-term sea transportation export requirements.

To provide a water-based emulsion adhesive mainly composed of a vinyl acetate-based polymer exhibiting good adhesiveness to water-repellent paper.SOLUTION: There is provided a water-based emulsion adhesive which comprises 0.3 to 5.0 pts.mass of an acrylic polymer containing an amino group, 5 to 20 pts.mass of a polyvinyl alcohol and 10 to 30 pts.mass of a plasticizer selected from the group consisting of triacetin, a diethylene glycol butyl ether acetate, diethylene glycol monoethyl ether acetate, an ethylene glycol monobutyl ether acetate, 3-methoxybutyl acetate and a propylene glycol monomethyl ether acetate, based on 100 pts.mass of a vinyl acetate-based polymer containing no ethylene group as a structural unit.SELECTED DRAWING: None

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 relates to a method for cleaving and at least partially recycling the starting components of a thermoset epoxy resin which is the polymerization product of a dicarboxylic acid diglycidyl ester of formula (I) and a diamine of formula (II): (I) wherein R1 represents a C1-20 alkylene group, H2N-R2-NH2 (II) wherein R2 represents a C1-20 alkylene group, but the two amino groups are not directly bonded to an aromatic ring; the thermoset epoxy resin has substantially the following structure: (A) wherein the wavy lines each represent the bonding of a nitrogen atom to another 2-hydroxypropyl group, where the method comprises the following steps a) to e): a) subjecting the resin to alcoholysis to obtain the corresponding diester of the corresponding dicarboxylic acid and a diester of the corresponding dicarboxylic acid according to formula (I) and a diester of the corresponding diester of the corresponding dicarboxylic acid according to formula (I); the present invention relates to a corresponding diamine ("polyol") of formula (II) substituted by 1, 3-dihydroxypropyl: polyol; b) performing acetylation at elevated temperature to obtain acetamide of diamine ("diamide") and triacetin of formula (II): diamide triacetin; c) deacetylating the diamide to obtain a diamine monomer of formula (II); d) deacetylating the triacetin to obtain glycerol, which is subsequently converted to glycidol; and e) transesterifying the diester obtained in step a) with the glycidol obtained in step d) to obtain the corresponding dicarboxylic acid diglycidyl ester of formula (I); the invention also relates to a method for producing such thermosetting epoxy resins and to novel resins produced in this way.

Orally administered compositions comprising triacetin are presented that increase the concentration of short chain fatty acids in the gut, namely acetic acid, wherein the compositions comprising triacetin are palatable at desirable concentrations. The triacetin formulations can also be orally administered to a dysbiotic subject to increase short chain fatty acid (SCFA) concentrations in the gut of the subject while substantially avoiding gas production in the subject. Advantageously, administration of contemplated compositions also increases gut barrier integrity and helps restore a balanced gut microbiome.

The utility model provides a glycerol triacetate heating reaction kettle structure, which relates to the technical field of chemical equipment and comprises a reaction kettle component, the reaction kettle component consists of a stirring barrel and a stirring top cover, and the stirring top cover is arranged at a top opening of the stirring barrel. The bottom of the stirring top cover is rotatably connected with an anchor-type stirring frame located in the stirring barrel, and through arrangement of vortex fan blades, in the working process, a second driving motor is started to drive the vortex fan blades to rotate in a heating sleeve, so that materials in the heating sleeve are in a high-speed rotating state, and the materials in the heating sleeve are heated to be in a high-speed rotating state; furthermore, under the action of vortex fan blades, the materials in the heating sleeve generate vortex, so that the water level in the stirring barrel is increased, collision is intense, the stirring effect of the reaction kettle is improved in cooperation with an anchor type stirring frame, and in the rotating process, under the action of a threaded groove, rotation of the materials is accelerated, so that the stirring effect is further improved.

Disclosed is an adhesive, wherein the adhesive comprises a lignin-based binder composition, wherein: - the lignin-based binder composition is prepared from crosslinking agent polymerized with polymerizable substance in the presence of triacetin, - at least 30 weight-% of the polymerizable substance originates from lignin, and - triacetin is used in an amount of 0.1 - 5 weight-% based on the total wet weight of the lignin-based binder composition. Further is disclosed the use of the adhesive and of triacetin. Further is disclosed an insulating wool product.

The invention discloses a smokeless firework material and a preparation method thereof. The smokeless firework material comprises the following components: 60%-75% of nitrocotton, 5%-10% of nitroglycerin, 5%-25% of a plasticizer and 1%-2% of a stabilizing agent. The plasticizer is triacetin, dibutyl phthalate or diethyl phthalate, and the plasticizer is dibutyl phthalate or diethyl phthalate; the stabilizing agent is a methyl centralite agent or an ethyl centralite agent. The method comprises the following steps: weighing the raw materials according to the formula proportion, and preparing a mixed medicine material by utilizing a jet absorption process; then, after the treatment of a water expelling process, preparing into a drug group; and crushing the mixture into particles with the granularity of 80-150 meshes by using a hammer crusher, adding the particles into the smokeless firework powder according to the proportion of 20-40%, and mixing the particles with the oxidizing agent and the metal powder for use. After the smokeless firework powder is added into the smokeless firework material, the smokeless firework material has the characteristics of less smoke during combustion, less residue and the like.

The present invention concerns a triacetin-based bioadditive composition for mineral diesel fuel, diesel–biodiesel blends, and pure biodiesel or B100. The bioadditive composition comprises triacetin as the sole bioadditive component in the range of 5–10% v / v by volume of the fuel. Triacetin is added directly to the fuel at ambient temperature and mixed to obtain a homogeneous fuel–bioadditive composition without the need for catalysts, additional chemical reactions, heating at elevated temperatures, or further refining processes. The resulting composition has a kinematic viscosity that remains within the specification range of each fuel and a sediment content of less than 0.01% m / m after storage for up to 30 days at 15–30°C.The effect of triacetin addition on density, acid number, oxidative stability, cetane number or cetane index, flash point, pour point, and cloud point depends on the type of fuel and the triacetin concentration used. The uniqueness of the present invention lies in the use of triacetin as a single bioadditive component in concentrations tested to produce a homogeneous composition, maintain flow characteristics within the specification range, and limit sediment formation during storage.

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 present application relates to the technical field of production safety management, and discloses a storage safety management method suitable for triacetin production, which comprises: judging whether the gas concentration in the target area is normal, judging the reason for abnormal gas concentration, constructing an employee habit model, and guiding the employee's taking habits. The storage safety management method suitable for triacetin production judges whether the materials in the area are the same batch of materials stored, compares the calculated material storage time with the upper limit of the allowed storage time, analyzes the employee storage and taking habit model, effectively identifies the materials stored for a long time, constructs the employee storage and taking habit model, and formulates an interference strategy according to the employee habits and the material storage conditions, so as to guide the employees to take the materials in each area more evenly, avoid some materials in certain areas from being ignored and taken for a long time, improve the overall material management and use efficiency, and reduce the risk of local material accumulation or deterioration.

The invention relates to an automatic management system for producing glyceryl triacetate for cigarettes, which is applied to the field of control or regulation systems and comprises an esterification reactor. According to the method, the change data of the actual temperature in the esterification reaction process can be effectively monitored, and the degree and state of the esterification reaction can be accurately judged and controlled by combining the temperature regulation and control effect, so that the optimal management of the temperature and time of the esterification reaction is realized through the intelligent synergistic effect, and the working efficiency is improved. The problems that the quality of esterification reaction products is reduced due to too high temperature, the reaction efficiency is low due to too low temperature, and byproducts are increased due to too long reaction time are solved, so that the production efficiency, the product quality and the esterification purity of the glyceryl triacetate for the cigarettes can be remarkably improved, and the economic benefits of production are finally promoted.

The invention relates to the technical field of fine chemical engineering, and particularly discloses an energy-saving rectification process of glyceryl triacetate. The process comprises the following steps: firstly, carrying out anaerobic closed pretreatment of nitrogen displacement and acetic acid gas phase secondary purging on a whole rectification system, and then carrying out two-stage precision filtration pretreatment on crude ester liquid obtained by catalyzing and esterifying glycerol and glacial acetic acid through solid acid; refining and purification are completed through sectional type reduced pressure pre-stripping, deacidification and concentration under pressure and reduced pressure coupling rectification for adjusting activity coefficients of components in a system through acetic acid in sequence, neutralization washing and drying steps are not set in the whole process, and meanwhile, a whole system material and heat energy closed-loop circulation system is constructed. The process can be used for industrial continuous production of food-grade and tobacco-grade glyceryl triacetate, the product purity and quality stability can be effectively improved, the comprehensive energy consumption in the rectification process is greatly reduced, the generation of high-salt-content organic wastewater is reduced from the source, and the process has good economical efficiency and environmental protection property and meets the development requirements of low-carbon clean production in the fine chemical industry.

The invention relates to the technical field of glyceryl triacetate, in particular to an industrial glyceryl triacetate industrial production system which comprises a control table, a reaction kettle is fixedly connected to the top of the control table, an air exhaust mechanism is fixedly connected to the rear side of the outer wall of the reaction kettle, and a gas collecting mechanism is arranged at the top of the air exhaust mechanism. By arranging the air exhaust mechanism and the gas collection mechanism, the air pressure in the reaction kettle is effectively adjusted, the actual requirements of industrial production are fully considered in the whole design of the air exhaust mechanism and the gas collection mechanism, and meanwhile, in the whole process, by accurately controlling the rotating speed and the rotating direction of the double-shaft motor, the gas collection efficiency is greatly improved. According to the reaction kettle, the gas pressure in the reaction kettle can be finely adjusted, so that the stability and the controllability of the production process are ensured, the gas collecting mechanism effectively avoids environmental pollution and potential safety hazards possibly caused by gas leakage through the unique design, and the safety and the environmental protection property of the whole production system are further improved.