31 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.

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.

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.

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 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 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 building materials, and discloses an environment-friendly sand brick and a preparation method thereof.The environment-friendly sand brick is prepared from aggregate and raw materials of a gelling and functional system; the gelling and functional system comprises a sodium silicate solution, active magnesium oxide, glycerol triacetate and calcium formate; the preparation method comprises the following steps: carrying out dry mixing on the aggregate, the active magnesium oxide and the calcium formate, premixing a sodium silicate solution and glycerol triacetate, and then carrying out wet mixing, compression molding and maintenance. Sodium silicate gel is controlled by glycerol triacetate to provide early strength, and calcium formate is utilized to construct a substance transmission channel to drive active magnesium oxide to generate mineralization reaction in the later stage; an expansive product generated by the reaction can fill pores and microcracks, so that the long-term strength and water resistance of the material are remarkably improved, and damage self-repairing is realized; the sand brick prepared by the invention has excellent comprehensive mechanical property, durability and self-repairing function.

The application discloses a triacetin production process self-adaptive control system based on an energy consumption model, relates to the technical field of industrial automation, and comprises an energy rhythm construction module, a load jump identification module, a superposition sign analysis module, an intervention time point generation module and a time-lag buffer adjustment module; the energy rhythm construction module collects energy consumption change information and working condition rhythm information in a triacetin production running process, aligns and arranges the collected energy consumption change information and working condition rhythm information in time, and forms continuous and consistent energy rhythm records. The application realizes dynamic monitoring of energy input and load change by constructing energy rhythm records and load jump identification, identifies energy accumulation trends in advance, avoids concentrated energy input caused by compensation lag, adjusts time-lag buffer and maintenance, makes energy input rhythm gentle, weakens superposition effect, controls temperature fluctuation, maintains energy dynamic balance, improves process safety and energy consumption utilization efficiency.

The utility model discloses a distillation device for refining glycerol triacetate with a preheating structure, which relates to the field of glycerol triacetate processing and comprises a storage preheating barrel, a conveying pipe is mounted above the storage preheating barrel, a mixing and stirring barrel is mounted at the other end of the conveying pipe, and a fixed embedding plate is mounted above the mixing and stirring barrel. According to the distillation device provided with the preheating structure and used for refining glycerol triacetate, when stirring and mixing operation needs to be conducted on the interior of a mixing and stirring barrel, a driving motor is started firstly to drive a semicircular gear to rotate, and the semicircular gear rotates to drive a fixed transmission rod to slide downwards through a transmission rack; and moreover, an ascending stirring plate fixedly mounted with a fixed transmission rod can stir the glycerol triacetate in the movement process, and the glycerol triacetate firstly enters the storage preheating barrel to be preheated and then enters the mixing and stirring barrel to work, so that uniform mixing of the glycerol triacetate raw materials during processing is ensured.

This invention discloses an online measurement method, device, system, and readable storage medium for triacetin. The method includes: starting a filter rod forming machine, stopping the spraying of triacetin, and collecting the near-infrared spectrum of the dry rod as a reference spectrum; adjusting the filter rod forming machine to a normal spraying state to spray triacetin onto the sample, and collecting the near-infrared spectrum of the sample in real time; using the near-infrared spectrum of triacetin as the target component, and the collected reference spectrum and the near-infrared spectrum of the forming paper (also known as the forming paper) used to wrap the filter rod as background components, calculating the component of the near-infrared spectrum of triacetin in the sample near-infrared spectrum collected under spraying state using a spatial angle measurement method; and calculating the real-time triacetin content by calling a pre-established component-triacetin content relationship model based on the component. This invention can quickly, efficiently, and in real time obtain and calculate the triacetin content in the filter rod.

There is a demand for a new composition capable of improving the flavor of a food / beverage, and a food / beverage containing the same. According to one embodiment of the present invention, provided is a food / beverage containing a sweetener, 1,2-propanediol, and at least one compound selected from the group consisting of acetic acid, nonanal, propionic acid, and triacetin. The 1,2-propanediol is included at 50-20000 ppm, and the content ratio between the 1,2-propanediol and the at least one compound falls within a prescribed range.

The application discloses a kind of yeast engineering bacteria for fermenting production triacetin and application thereof.The engineering bacteria uses Pichia pastoris GS115 as starting strain, imports 2-pyrone synthetase coding gene Gh2PS, simultaneously overexpresses acetyl-coenzyme A carboxylase gene ScACC1, further improves Gh2PS copy number, and obtains the Pichia pastoris engineering bacteria.The Pichia pastoris engineering bacteria developed in the application can efficiently produce triacetin, and the yield of shake flask fermentation reaches 2.72g / L, and the highest yield of 1L fermenter fermentation reaches 9.72g / L.The application constructs a kind of Pichia pastoris engineering bacteria for fermenting production triacetin, and lays a foundation for subsequent development of Pichia pastoris chassis strain for efficiently synthesizing high-value platform compound triacetin.

The present invention provides novel compositions that can improve the flavor of food and beverages, as well as food and beverages containing such compositions. [Solution] According to one aspect of the present invention, a food or beverage is provided that comprises a sweetener, 1,2-propanediol, and at least one compound selected from the group consisting of acetic acid, nonanal, propionic acid, and triacetin, wherein the content of 1,2-propanediol is 50 to 20,000 ppm, and the ratio of the content of 1,2-propanediol to the content of the above at least one compound is within a predetermined range.

The invention discloses a filter material comprising a cellulose-fibre-based substrate, an additive and an adhesion promoter, wherein the mass ratio of additive and adhesion promoter is at least 1:3 and at most 2:1 and the additive and the adhesion promoter make up in total at least 3% and at most 40% of the mass of the cellulose-fibre-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 glycerol diacetate or mixtures thereof.

This invention discloses a method for preparing a polyol-modified cyclodextrin-based emulsion without emulsifiers, comprising the following steps: S1, preparing polyol-modified cyclodextrin dendritic macromolecules; S2, dissolving the polyol-modified cyclodextrin dendritic macromolecules in deionized water, adding a certain amount of triacetin glycerol, and stirring evenly in a water bath; S3, adding a certain amount of oil-soluble fragrance dropwise, lowering the water bath temperature, and continuing stirring; S4, using a high-speed shear emulsifier to shear the liquid in the above steps at high speed to obtain the emulsion product. According to this invention, the problem of flavor loss caused by volatilization and oxidation of fragrances during high-temperature processing can be effectively alleviated, achieving long-term aroma retention and controllable release, providing a highly efficient and safe flavor encapsulation and delivery solution for related industries.

The application relates to the technical field of triacetin purification, and discloses a triacetin 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, a storage tank is fixedly connected to the outer wall of the sliding block, a partition plate is fixedly connected to the inside of the storage tank, and the device further comprises a first flap which is rotatably arranged in the inside of the partition plate, a second flap is movably connected to the side of the first flap, and a movable ball rod is slidably arranged in the inside of the second flap. When the first flap and the second flap are kept in a horizontal state, the first flap and the second flap are used for plugging the channel on the first filter screen; when the first flap and the second flap are folded, the channel is opened; the movement of the second flap is used for scraping the crystalline impurities on the first filter screen; and the flow rate of the liquid is improved.

A filter element for use in a smoking article includes a filter material comprised of paper sheet having a crimped three-dimensional structure. Polyethylene glycol, triethyl citrate, or triacetin is interacted with the filter material to increase the selective removal of semi-volatile compounds from mainstream smoke being drawn through the filter element, over the filter material alone. An associated method of making a filter element for use in a smoking article is also provided.

The invention relates to a device and a method for separating glycerol triacetate in filter cotton for cigarettes. The method mainly comprises a conveying line, a baking oven, an internal circulation fan assembly and an air draft assembly, the conveying line penetrates in from an inlet of the baking oven and penetrates out from an outlet of the baking oven, the conveying line is used for conveying filter cotton into the baking oven to be heated, the air draft assembly is arranged at the top of the baking oven, and the internal circulation fan assembly is arranged in the baking oven. The air draft assembly is communicated with an inner cavity of the baking oven, the air draft assembly is used for sending gas containing glycerol triacetate in the baking oven out of the baking oven from the interior of the baking oven, and an exhaust fan is arranged on the air draft assembly. The device can be used for separating glycerol triacetate in filter cotton in the field of cigarette production.

The application provides a production equipment and process of a Venturi cooling filter rod. The outlet of a filament opening and gluing device is connected with a reciprocating device. A shaping core strip is fixed on the reciprocating device and drives the shaping core strip to reciprocate in and out of a cavity of a filter rod heat setting device. The outlet of the filter rod heat setting device is connected with a filter rod cold setting device. The outlet of the filter rod cold setting device is connected with a filter rod forming device. The outlet of the filter rod forming device is connected with a filter rod slitting device. After being opened and sprayed with triacetin, the acetate filament is sent into the filter rod heat setting device through a high-pressure filament feeder. The acetate filament is heated and dissolved by steam inputted into the filter rod heat setting device, and then enters the filter rod cold setting device. After being cooled and set, the acetate filament is wrapped by a cloth tape and pulled out to become a filter rod with a stable circular shape. The filter rod is cut into filter rods with a certain length through the slitting device. The equipment can be used to produce the filter rod with the Venturi structure.

According to the technical scheme, the distillation separation equipment for glyceryl triacetate production is characterized by comprising a processing box, a through hole is formed in the top face of the processing box, a fixing cover is fixedly installed on the top face of the processing box, a plurality of partition plates are fixedly installed in the fixing cover, and the partition plates are fixedly installed in the processing box. The partition plates are distributed on the two sides of the inner wall of the fixing cover in a staggered mode, a fixing hole is formed in the top face of the fixing cover, a first connecting pipe is fixedly installed in the fixing hole, and the first connecting pipe is of a U-shaped pipe structure. The heat conduction shell can be directly heated by arranging the heating resistor, and even heating can be guaranteed as much as possible compared with a bottom heating mode. The heat conduction shell can be directly heated by arranging the heating resistor, so that gas can be in contact with the partition plate, and water can be retained on the outer wall surface of the partition plate.

The application discloses a filter rod triacetin detection system and method based on hyperspectral imaging, and relates to the technical field of cigarette filter rod detection. The method comprises the following steps: collecting hyperspectral image data of a filament on a production line; extracting a spectral characteristic variable according to the hyperspectral image data based on a preset wavelength; and inputting the spectral characteristic variable into a pre-established quantitative correction model to obtain a real-time content prediction value of triacetin of the filament on the production line. The method can realize online nondestructive full detection of filter rod triacetin, and can improve quality control from 'post-inspection' to 'in-process prevention and real-time regulation', and improve product consistency and quality stability.