597 results about "Spray dried" patented technology

This invention relates to a traditional Chinese medicine composition for improving cancer-related fatigue, its preparation method, and its application. Belonging to the field of traditional Chinese medicine technology, it solves the technical problems of the lack of modern traditional Chinese medicine preparations for cancer-related fatigue and the lack of a systematic explanation of the pharmacological mechanism. The solution is: a traditional Chinese medicine composition for improving cancer-related fatigue, its preparation method, and its application, formulated according to the principles of principal, assistant, adjuvant, and guide herbs. The principal herbs are Astragalus membranaceus and Codonopsis pilosula; the assistant herbs are Angelica sinensis and Rehmannia glutinosa; the adjuvant herbs are Poria cocos, Citrus reticulata peel, and Ophiopogon japonicus; and the guide herb is Glycyrrhiza uralensis. By weight fraction, the principal herb is 10-18 parts, the assistant herbs are 8-14 parts, the adjuvant herbs are 8-14 parts, and the guide herb is 1-3 parts. The preparation method of the traditional Chinese medicine composition for improving cancer-related fatigue includes the following steps: 1) water extraction; 2) concentration; 3) spray drying; 4) sieving and mixing; 5) granulation; and 6) drying and packaging. Compared with the prior art, this invention has the advantages of convenient administration, stable efficacy, and a systematic explanation of the pharmacological mechanism.

The application provides a lithium iron phosphate continuous dynamic carbonization reduction roasting device and a roasting method, and relates to the technical field of new energy batteries. Raw materials in a raw material pool enter a spray drying device through a first pipeline, enter a first cyclone bag dust removal device through a second pipeline, and then enter a de-coking carbonization device through a feeding device. The materials enter a second cyclone bag dust removal device through a third pipeline, and then enter a first-stage reduction roasting unit and a second-stage reduction roasting unit in sequence. Nitrogen in a nitrogen source enters a fifth pipeline and then enters the heating device together with the materials, and then enters the de-coking carbonization device through the fourth pipeline. The nitrogen and the gas in the materials enter the second-stage reduction roasting unit together, and then enter the first-stage reduction roasting unit. Continuous production and dynamic roasting are realized, sticking in roasting is avoided, and the broken and homogenized sintering is avoided. Wear and tear and impurity pollution of the product under high temperature are avoided, and the quality stability of the lithium iron phosphate is realized.

This utility model relates to the technical field of spray dryers for traditional Chinese medicine extracts, specifically a spray dryer for traditional Chinese medicine extracts, including a machine body, a cover plate, a connecting mechanism, and a cleaning mechanism. The machine body has a support base at its bottom, and several support bases are provided. The cover plate is connected to the machine body via the connecting mechanism. The connecting mechanism includes a fixing block, an annular groove, an electromagnet, and bolts. The annular groove is formed on the side wall of the cover plate. One end of the fixing block is connected to the machine body via the bolts, and the other end of the fixing block extends into the annular groove, with the portion of the fixing block extending into the annular groove matching the groove. One end of the electromagnet is connected to the top of the machine body, and the other end of the electromagnet is attracted to the side wall of the cover plate. Several connecting mechanisms are provided. The cleaning mechanism includes a through groove, a vertical block, a sliding component, a sealing block, and a scraper. This utility model of a spray dryer for traditional Chinese medicine extracts solves the problem of inconvenient cleaning of current equipment.

This utility model relates to the field of drying tower technology, and more particularly to a waste gas treatment device for spray drying towers, comprising: an air inlet pipe; a primary filter box is provided on one side of the air inlet pipe, the inner cavity of the primary filter box is provided with a filter plate, a treatment box is provided on the side of the primary filter box away from the air inlet pipe, a water tank is provided on the top of the treatment box, a water pump is provided on one side of the water tank, a water collection pipe is provided on the top inner side of the treatment box, a connecting water pipe is provided on the outer ring of the water collection pipe, a nozzle is provided at the bottom of the connecting water pipe, a water outlet pipe is provided on the bottom front side of the treatment box, and a secondary filter box is provided on the side of the treatment box away from the primary filter box, the inner cavity of the secondary filter box is provided with an activated carbon plate. The waste gas undergoes primary filtration through the filter plate, the water pump is turned on to adsorb dust particles through water, and the gas is filtered again through the activated carbon plate, thus achieving better treatment of the waste gas through multiple processes.

This invention discloses a method for preparing piperine starch microcapsules with sustained-release properties, belonging to the field of food processing technology. Using piperine as the core material, oleic acid as the oil phase carrier, and PG 2000 type octenyl succinate starch ester as the wall material, sustained-release piperine microcapsules are prepared through oil phase preparation, aqueous phase preparation, high-speed shearing, high-pressure homogenization, and spray drying. The microcapsules prepared by this invention have high encapsulation efficiency, small and uniformly distributed reconstituted particle size, and a stable system that is not prone to sedimentation. This allows for the slow and continuous release of piperine in simulated gastrointestinal fluid, significantly improving its poor water solubility, low stability, and low bioavailability. The resulting product can be widely used in the food, health product, and pharmaceutical fields.

This invention relates to the field of traditional Chinese medicine preparation technology, and discloses a Qingfu Chaijin granule, its preparation method, and its application. The Qingfu Chaijin granule comprises the following traditional Chinese medicine raw materials in parts by weight: Bupleurum chinense 8-12 parts, Cyperus rotundus 8-12 parts, Citrus reticulata peel 8-12 parts, Salvia miltiorrhiza 12-18 parts, Curcuma longa 8-12 parts, Angelica sinensis 8-12 parts, Ligusticum chuanxiong 5-8 parts, Foeniculum vulgare 8-12 parts, Amethyst 25-35 parts, Artemisia argyi 5-8 parts, Cistanche deserticola 8-12 parts, Epimedium brevicornu 8-12 parts, and Rehmannia glutinosa 8-12 parts. The invention also discloses the application of the aforementioned Qingfuchaijin granules in the preparation of drugs for relieving or treating dysmenorrhea caused by qi stagnation and blood stasis. By scientifically optimizing the compatibility ratio of Qingfuchaijin granules and combining it with a reasonable preparation process design, the resulting Qingfuchaijin granules have been significantly improved in terms of stability, user experience, and performance. The use of dry granulation or spray drying-dry granulation combined technology effectively reduces the initial moisture content of the granules, significantly reduces the hygroscopicity of the granules, and improves the storage stability of the product.

The application discloses a preparation method of a pesticide lignosulfonate sodium dispersant composition and belongs to the technical field of dispersants. The method comprises the following steps: S1, taking papermaking black liquor as raw material, performing standing precipitation, flocculation precipitation, membrane concentration and acid precipitation treatment to obtain purified lignin; S2, adding the purified lignin into water, adjusting the pH of the system to 10-11, then adding hydrogen peroxide to perform pre-oxidation, then adding formaldehyde and sodium sulfite to perform sulfomethylation reaction, and adding formaldehyde to perform polycondensation reaction; cooling and discharging, and performing spray drying to obtain lignosulfonate sodium; and S3, adding the lignosulfonate sodium and 1-ethyl-3-methyl imidazolium L-lactate into water and stirring and uniformly mixing, adding stevioside to perform ultrasonic treatment, forming a homogeneous system, and performing spray drying to obtain the pesticide lignosulfonate sodium dispersant composition. The lignosulfonate sodium dispersant composition can effectively improve the pesticide dispersion stability and pesticide biological activity, and meets the pesticide use requirement.

The application discloses a preparation method of egg yolk phospholipid polypeptide which is helpful for bone growth and improvement of brain health, and comprises the following steps: (1) raw material pretreatment to obtain a reaction substrate solution; (2) primary enzymolysis to prepare a primary enzymolysis solution; (3) secondary enzymolysis to prepare a secondary enzymolysis solution; (4) inactivation, the temperature of the secondary enzymolysis solution prepared in the step (3) is adjusted to 85-95 DEG C, and the enzyme is completely inactivated by keeping for 10-15 min; (5) fermentation; (6) post-treatment, the fermentation liquid after the fermentation is kept at 50-60 DEG C for 10-30 min, and then cooling, centrifugation, collection of supernatant, vacuum freeze drying or spray drying of the supernatant are carried out, so that the egg yolk phospholipid polypeptide powder is obtained. The natural compound rich in specific functional peptide segments and phospholipids is prepared through the two-step enzymolysis coupling fermentation process, can effectively promote the growth and development of the bone, significantly improve the learning, memory and cognitive ability, and can significantly promote the proliferation of osteoblasts.

The present application belongs to the technical field of food processing, and particularly relates to a preparation method of solid beverage sustained-release granules. The method comprises four steps of preparing a flavor microcapsule core material, preparing an inner layer coating liquid, preparing an outer layer powder, and fluidized bed secondary coating and granulation. The method combines the advantages of spray drying microcapsule technology and secondary coating and granulation technology, and the prepared sustained-release granules have a multilayer structure of a core-inner layer coating-outer layer skeleton. The flavor material has high embedding rate and good storage stability, and can realize phased controlled release of the flavor material during brewing, thereby providing a unique sensory experience for drinkers.

The utility model relates to pharmaceutical equipment technical field especially relates to a kind of powder accumulation prevention wall cleaning device of spray drying tower.It is a kind of powder accumulation prevention wall cleaning device of spray drying tower, including main part, limiting screw rod, locking knob, sliding sleeve, first pivot, folding rod, brush and hinged rod, main part bottom fixed connection has limiting screw rod, limiting screw rod is threadedly connected with locking knob, locking knob bottom periphery fixed connection sliding sleeve, limiting screw rod lower end rotationally connects first pivot, first pivot periphery is cross-distributed rotationally connected with folding rod, folding rod outer end is all fixedly connected with brush, and each folding rod outer side top and sliding sleeve lower periphery between rotationally connected with hinged rod.The utility model is moved up and down along limiting screw rod by rotating locking knob and driving sliding sleeve, realizes the unfolding and folding of folding rod, improves the operation convenience and maintenance efficiency of equipment, reaches the effect that it is easy to operate and efficiently to complete drying tower inner wall cleaning.

This invention discloses a method for producing high-quality sodium caseinate, belonging to the field of food engineering technology. The method includes enzymatic modification, low-temperature alkali conversion, ceramic membrane microfiltration, ultrafiltration desalting and concentration, homogenized spray drying, and fluidized bed agglomeration granulation. Enzymatic modification uses a complex enzyme of endopeptide and phosphatase to hydrolyze bitter peptides and phytic acid at 45–55℃; low-temperature alkali conversion involves gradient alkali addition at 15–25℃ to avoid thermal damage and Maillard reactions; ultrafiltration employs equal-volume dialysis, with water added until the conductivity is ≤500 μS / cm, desalting and removing small-molecule bitterness; finally, agglomeration granulation is achieved by fluidized bed spraying with 0.1%–0.5% lecithin. This invention completely abandons the acid precipitation-alkali dissolution process, coupling enzymatic modification with all-physical membrane separation and purification to produce sodium caseinate that is white in color, pure in flavor, dissolves rapidly in cold water in ≤30 seconds, has an ash content ≤3.5%, reduces wastewater discharge by more than 90%, is environmentally friendly, and suitable for large-scale production.

The application discloses a kind of composite materials for 3D printing wild animal skeleton, which is composed of composite nanoparticles of calcium phosphate and hydroxyapatite, and is prepared by a combined method of biomimetic in-situ synthesis-solvent thermal phase inversion-spray drying method.The composite material has high specific surface area and excellent fluidity, and can be used for 3D printing wild animal skeleton, with broad market application prospect.

The application discloses a salt-reducing base suitable for acid food and a preparation method and application thereof. The preparation method of the salt-reducing base suitable for acid food comprises the following steps: 1) preparation of soybean extract and lemon peel extract; 2) mixing the soybean extract and the lemon peel extract with edible glue for enzymolysis, enzyme inactivation, pH value adjustment to 6.0-8.0, solid-liquid separation, concentration and spray drying of liquid substances. The salt-reducing base has the advantages of excellent salt-reducing effect, no bad flavor, inhibition of irritating flavor of the food itself, suitability for acid food, low production cost and the like, is rich in polysaccharide and peptide and other components beneficial to human health, and is suitable for large-scale industrial production and application.

This invention discloses a Zhishu Yangwei tablet for chronic gastritis and its granule dry-compression tableting process, relating to the field of traditional Chinese medicine preparation technology. The Yangwei tablet is made from the following raw materials in parts by weight: Codonopsis pilosula 35-45 parts, stir-fried Atractylodes macrocephala 18-22 parts, Poria cocos 18-22 parts, Glycyrrhiza uralensis 8-12 parts, Amomum villosum 18-22 parts, Lindera strychnifolia 18-22 parts, Salvia miltiorrhiza 45-55 parts, roasted Aucklandia lappa 18-22 parts, Paeonia lactiflora 18-22 parts, stir-fried Citrus aurantium 18-22 parts, Magnolia officinalis 28-32 parts, Lilium brownii 35-45 parts, and stir-fried chicken gizzard lining 18- 22 parts, dried plum 45-55 parts, Coptis chinensis 8-12 parts, hawthorn 35-45 parts, magnesium stearate 5-7 parts, sucrose 28-32 parts; This invention uses low-temperature dynamic extraction technology to replace the traditional high-temperature decoction process, effectively reducing the decomposition loss of heat-sensitive active ingredients such as tanshinone IIA and ursolic acid, and improving the bioavailability of the drug. It also uses membrane concentration and spray drying technology to replace the traditional atmospheric pressure concentration and oven drying process, shortening the production cycle, reducing energy consumption, and avoiding the degradation of active ingredients caused by prolonged heating of materials.

A perilla oil α-linolenic acid microcapsule and its preparation method belong to the food processing field, including the following steps: (1) extraction of perilla oil; using a bio-enzyme-assisted low-temperature pressing method, a compound enzyme is added to perilla seeds for enzymatic hydrolysis, followed by low-temperature pressing to collect perilla seed oil; (2) enrichment and purification of α-linolenic acid; the perilla seed oil obtained in step (1) is purified by molecular distillation technology, and the perilla oil fraction enriched with α-linolenic acid is collected; (3) microencapsulation; using the perilla oil enriched with α-linolenic acid obtained in step (2) as the core material, after selecting a suitable composite wall material, perilla oil α-linolenic acid microcapsules are obtained by spray drying. This invention improves the extraction efficiency of perilla oil, retains the natural activity of α-linolenic acid; efficiently enriches α-linolenic acid through molecular distillation technology, increasing the content of functional active ingredients in the product; and improves the oxidative stability and storage performance of α-linolenic acid.

The application discloses a high-water-solubility florfenicol powder and a preparation method thereof, and belongs to the technical field of veterinary drug preparations. The powder is prepared from florfenicol, a water-soluble polymer carrier, tetraethyl orthosilicate or a mixture of the tetraethyl orthosilicate and methyl triethoxysilane and a C2-C6 organic polyacid containing polyhydroxy and polycarboxyl groups as raw materials through in-situ sol-gel spray drying one-step method. In the preparation, the controllable hydrolysis and condensation of organosilane and the in-situ esterification cross-linking of the organic polyacid are used to synergistically assemble and build an organic-inorganic hybrid network skeleton, and the amorphous florfenicol is anchored in the network skeleton. The product has both instant and moisture-proof properties. The method is simple in process, and the raw and auxiliary materials are safe and easy to obtain, so the method is suitable for industrial production and solves the problem that traditional solid dispersions are easy to absorb moisture and form lumps.

The present disclosure provides a thermal barrier coating powder and a preparation method thereof, and a thermal barrier coating, and relates to the technical field of high-temperature protective coating materials. The method comprises: performing mechanical-chemical grinding and surface hydroxylation treatment on a MAX phase powder; dispersing an activated MAX phase core in a liquid phase, uniformly coating a YSZ precursor on the surface of the core through double titration co-precipitation to obtain a core-shell structure precursor slurry; performing microwave hydrothermal treatment to in-situ crystallize the YSZ precursor to form a YSZ shell layer on the surface of the MAX phase core, thereby obtaining a core-shell structure unit; the core-shell structure unit has a core-shell structure composed of a MAX phase core and a YSZ shell; performing post-treatment and spray drying on the core-shell structure unit to obtain a thermal barrier coating powder; and the powder is obtained by agglomeration of multiple core-shell structure units. The interface between the core and the shell of the powder obtained by the method is firmly combined, can provide oxidation protection for the inner core of the MAX phase in coating preparation processes such as thermal spraying, and significantly improves the fracture toughness and thermal shock resistance of the thermal barrier coating.

The utility model discloses a kind of automatic lens cleaning equipment, including shell, ultrasonic cleaning pool is arranged in one side in the shell, the other side in the shell is provided with spray drying pool, spray drying mechanism is installed on the shell at the spray drying pool, the spray drying mechanism includes water pump, water tank, spray cover and drying fan. Advantageous effect lies in: the utility model is separated by setting ultrasonic cleaning pool and spray drying pool, so that the ultrasonic cleaning of lens and spray drying process are carried out in two different chambers, avoid the risk of overflow of cleaning water when lens is cleaned, make the environment of lens cleaning place more clean, simultaneously by the cooperation design of spray drying mechanism and oblique type's clamping adhesive strip, lens can be washed in the way of double-sided spray when spray drying, effectively avoid the adhesion of sundries on lens, make the final cleaning quality of lens better.

This invention belongs to the field of traditional Chinese medicine fermentation technology, specifically involving a high-enzyme-active Liu Shen Qu (a type of fermented medicinal herb) and its fermentation process. The process first processes red beans, bitter almonds, artemisia annua, cocklebur, and polygonum hydropiper into a medicinal porridge, which is then mixed with wheat flour and a specific fermenting agent to form a soft mass. Its innovation lies in the use of a Bacillus subtilis trehalose protective agent complex and Aspergillus oryzae chitosan microspheres. These two fermenting agents are prepared by spray drying encapsulation and ionogel methods, respectively, significantly improving the survival rate and stability of the fermenting microorganisms during processing and storage. The soft mass undergoes two stages of precisely controlled temperature and humidity fermentation, and finally, after shaping and segmented drying, the finished product is obtained. This process effectively solves the problems of low enzyme activity and poor stability in traditional Liu Shen Qu fermentation, resulting in a Liu Shen Qu product with high digestive enzyme activity and stable, uniform quality.

The application provides a low-temperature fast-charging type lithium iron phosphate positive electrode material and a preparation method and application thereof, and belongs to the field of lithium ion batteries. The iron source, the phosphorus source and the first dopant are mixed to prepare a composite precursor through reaction; the composite precursor is uniformly mixed with a lithium source, a carbon source, a second dopant and a third dopant to obtain a mixture, and the mixture is ground and spray-dried to obtain an intermediate product; and the intermediate product is subjected to calcination treatment to obtain the low-temperature fast-charging type lithium iron phosphate positive electrode material. The first dopant is introduced into the composite precursor to construct a biomimetic ion channel, and a synergistic strategy of multi-element composite doping and calcination treatment is combined, so that the diffusion path of lithium ions is significantly widened, the migration resistance of lithium ions at low temperature is reduced, the comprehensive electrochemical performance of the lithium iron phosphate positive electrode material is improved, and the defects of poor low-temperature performance and insufficient fast-charging capacity of traditional materials are effectively solved.

The invention relates to the technical field of food processing, and discloses an embedding and fragrance locking process of dried orange peel flavored bread, which comprises the following steps: S1, pretreatment of dried orange peel raw materials and preparation of a characteristic fragrance base; s2, a preparation stage of a water phase and an oil phase of the compounded wall material; s3, an emulsifying and homogenizing stage; s4, a spray drying microcapsule forming stage; s5, a bread production whole-process fragrance locking adaptation application stage; through embedding and fragrance locking treatment, the problem that characteristic fragrance components are easy to volatilize and lose in the production process of the dried orange peel flavored bread is effectively solved, the natural characteristic flavor of the dried orange peel is completely reserved, the damage of a high-temperature processing link to flavor substances is avoided, the retention rate of the dried orange peel flavor in the finished bread is increased, and the fragrance retention time is prolonged; the dried tangerine or orange peel powder is added into the bread, so that the bread can present full and uniform dried tangerine or orange peel flavor in the processes of eating, chewing and aftertaste, the flavor level of the product is enriched, the bad flavors such as bitterness are prevented from being separated out, and the overall taste quality of the bread is improved.

This invention belongs to the field of pharmaceutical technology, specifically relating to an alginate oligosaccharide, its preparation method, and its applications. Using brown algae as raw material, the invention first removes impurities from the algae, then extracts it through subcritical acid water, followed by neutralization, decolorization, heavy metal removal, membrane ultrafiltration / nanofiltration purification, and spray drying to obtain high-purity saturated alginate oligosaccharides with a specific degree of polymerization distribution. These alginate oligosaccharides can increase butyrate production by intestinal flora and exert a laxative effect. The alginate oligosaccharide and its preparation method provided by this invention directly use brown algae as raw material, overcoming the drawbacks of traditional methods that first prepare alginate and then hydrolyze it to prepare alginate oligosaccharides, greatly shortening the process steps and improving production efficiency. The alginate oligosaccharides provided by this invention have high purity and broad application potential in the preparation of intestinal health drugs, health products, or dietary supplements.

This invention relates to an extraction method for improving the bioavailability of tartrate tylosin. The method includes subjecting tartrate fermentation broth to a single acid-dissolution and alkali-precipitation treatment, followed by static crystallization to obtain crude tartrate. This crude tartrate is then subjected to extraction and back-extraction steps, followed by decolorization and ultrafiltration to obtain refined tartrate. Finally, it is spray-dried to obtain tartrate tylosin. This invention optimizes the extraction process of tartrate tylosin by combining a single acid-dissolution and alkali-precipitation crystallization purification process with extraction and back-extraction processes, effectively improving the bioavailability of tartrate tylosin.

The application provides a low-cost lithium iron phosphate and a preparation method and application thereof, and belongs to the field of lithium battery materials, wherein an intermediate is obtained by mixing a ferrous salt solution with a lithium source, a phosphorus source, a reducing agent and a homogeneous precipitant; the intermediate is mixed with a carbon source to obtain a mixed slurry; and the mixed slurry is subjected to spray drying, calcination and crushing treatment to obtain lithium iron phosphate. The intermediate is prepared by directly reacting the ferrous salt solution with the lithium source, the phosphorus source, the reducing agent and the homogeneous precipitant, the synthesis of an expensive iron source precursor and the complicated nanometer grinding process in the traditional process are omitted, the process flow is greatly shortened, and the raw material cost and energy consumption are significantly reduced; in combination with the spray drying and calcination process, the introduction of impurities is effectively avoided, the prepared lithium iron phosphate has the characteristics of low cost, good consistency and excellent electrochemical performance, and effectively promotes the cost reduction and efficiency increase of new energy automobile power batteries.

The application belongs to the field of molecular sieve material preparation, and relates to a method for synthesizing micron TS-2 molecular sieve with hierarchical pores, comprising the following steps: firstly, a silicon source, a titanium source, hydrochloric acid and deionized water are mixed according to a specific proportion, a high-dispersion SiO2-TiO2 precursor powder is obtained through a spray drying device, then the precursor powder is added into a TBAOH solution to form an initial gel, micron TS-2 molecular sieve is obtained by controlling hydrothermal crystallization conditions; then the micron TS-2 molecular sieve is fully mixed with an organic alkali solution and deionized water, and stirring is performed to obtain a mixed slurry; the mixed slurry is transferred into a crystallization kettle with a stirring device, and is subjected to a high-temperature crystallization process, and then is subjected to washing, separation, drying and calcination to obtain a micron TS-2 molecular sieve product with a hierarchical pore structure. The organic alkali post-treatment strategy is adopted, mesoporous structures are successfully introduced while the micron size is maintained, and the mass transfer efficiency and active site accessibility of the molecular sieve are significantly improved.

The application discloses a preparation method of small molecule peptides based on synergistic degradation of chicken eggshell membranes by molds and the small molecule peptides, and relates to the field of small molecule peptide preparation. The method comprises the following steps: mixing pretreated chicken eggshell membranes with mold fermentation liquor, and performing synergistic degradation; inactivating and centrifuging the degraded mixture, and collecting supernatant; purifying small molecule peptides in the supernatant through membrane separation technology; drying the purified small molecule peptide solution through a low-temperature spray drying method to obtain small molecule peptide powder; and the molds include Trichoderma reesei and Aspergillus niger. Through synergistic degradation of the two molds, the conversion of the chicken eggshell membranes is more thorough, the yield of the small molecule peptides is significantly improved, the total nitrogen recovery rate can reach 85.2%, and the product molecular weight distribution is concentrated.

This application discloses a method for the conversion of C4-C6 alkanes. In a reactor, a raw material containing hydrogen and C4-C6 alkanes is contacted with a catalyst and reacted to obtain a product containing small molecule hydrocarbons; the C4-C6 alkanes are selected from at least one of n-butane, isobutane, n-pentane, isopentane, and 2,3-dimethylbutane; the small molecule hydrocarbons are selected from at least one of ethane, propane, n-butane, and n-pentane; the catalyst is prepared by the following steps: (1) mixing clay and sol, spray drying to obtain microspheres with a diameter of 1-50 μm; (2) immersing the microspheres in an aqueous solution containing a noble metal precursor, drying I, calcining I, and treating with a hydrogen atmosphere to obtain a catalyst precursor; (3) mixing the catalyst precursor, molecular sieve, and additives, rolling to form spheres, drying II, calcining II, and reducing to obtain the catalyst.

This application discloses a process and apparatus for the continuous preparation of lithium difluorooxalate borate, relating to the field of lithium salt additive preparation technology. The process mainly includes a pretreatment step, a continuous reaction step, and a spray drying step. Specifically, it includes: preparing an oxalic acid solution and dehydrating the oxalic acid solution to obtain a dehydrated oxalic acid solution with a moisture content of less than 20 ppm; continuously pumping a lithium tetrafluoroborate solution, trimethylchlorosilane, and the dehydrated oxalic acid solution into a spiral pipe reactor for reaction to obtain a lithium difluorooxalate borate reaction solution; and spray drying the lithium difluorooxalate borate reaction solution to remove organic solvents, obtaining crude lithium difluorooxalate borate. This application precisely controls the moisture content in the raw materials, enabling large-scale continuous production and effectively avoiding the problems of caking and sticking to the walls during the drying process. It also solves the problems of corrosion caused by excessive moisture and low drying efficiency in the preparation of lithium difluorooxalate borate, thus improving production efficiency and product yield.

This utility model relates to the technical field of drying equipment, and in particular to a spray drying device for a film-coated premix. It features an in-tank stirring mechanism to assist in coating spraying and drying, resulting in a simpler structure, easier operation, and improved practicality. The device includes a material tank, a guide hopper, a discharge head, a discharge external threaded port, an internal threaded sleeve, a baffle, a stirring drive motor, a reducer, a stirring frame, heating elements, hinges, a cover plate, a spray head, and a guide tube. The bottom of the material tank is connected to the top of the discharge head via the guide hopper. The bottom of the discharge head is connected to the top of the discharge external threaded port. The outer side of the discharge external threaded port is detachably screwed to the inner side of the internal threaded sleeve. The baffle is located inside the internal threaded sleeve. The output end of the reducer is connected to the bottom of the stirring frame. Multiple sets of heating elements are also installed inside the material tank. The top rear side of the material tank is movably connected to the rear center of the cover plate via a hinge. A spray head is located in the center of the cover plate, connected to one side of the guide tube. A spray mechanism is located on the other side of the guide tube.