55results about How to "Troubleshooting Filtration" patented technology

The invention provides a method for preparing Beta molecular sieve. The whole or parts of the aluminum sources are provided with the natural minerals such as kaolin and bentonite as raw materials and organic ammonium template is added to carry out crystallization reaction under hydrothermal condition to gain the crystallization product containing Beta molecular sieve. The gained crystallization product can use different post-processing method to prepare modification Beta molecular sieve and can be used as active constituent or carrier of the catalyst. The Beta molecular sieve prepared by the method of the invention has higher heat and hydrothermal stability, solves the problem of difficult filtering of Beta molecular sieve preparation and post-processing and can increase the production efficiency. The invention extends the range of raw materials of the compound Beta molecular sieve, finds novel purpose for more natural minerals and further lowers the cost of preparing Beta molecular sieve.

A ZSM-5 structured zeolite, the molar ratio of silicon oxide to aluminum oxide is 15-200, the primary particle diameter is 0.5-10 μm, and the mesopore surface area with a pore diameter of 2-50 nm measured by BET low-temperature nitrogen adsorption method is 25- 250m 2 / g. The zeolite is prepared from conventionally produced zeolite with larger crystal grains as raw material, treated with alkaline aqueous solution, ammonium ion exchange, dried and roasted. When the zeolite is used as a catalyst for the hydration of cyclohexene to prepare cyclohexanol, a good conversion rate of cyclohexene can be obtained, and it solves the difficulty in separating the catalyst from the liquid phase after the hydration reaction in the prior art and the fine crystal grains during the zeolite synthesis. resulting in difficult filtering problems.

The invention relates to the technical field of heating ventilation air conditionings and energy conservation and provides an evaporative cooling and traditional refrigeration combined air conditioning device and an air conditioning method thereof. The air conditioning device comprises an evaporative cooling device and an air handling device, wherein the evaporative cooling device comprises a cooling device housing, a direct evaporation refrigeration filler and a surface type heat exchange device; an air inlet end and an air exhaust outlet end are arranged on the cooling device housing; the direct evaporation refrigeration filler is internally mounted in the cooling device housing; a sprinkling device is arranged above the direct evaporation refrigeration filler. The air conditioning device provided by the invention is reasonable in structure and convenient to use; since the evaporative cooling device and the air handling device are adopted to collaboratively treat indoor air return, the problem of difficulty in air filtration is solved and the solution of the ventilation air-conditioning system under climatic conditions throughout the year is achieved; as the air conditioning device can operate and treat indoor air all through the year in the region under any climatic condition, the applied range and field of employment become wider; the air-conditioning device has the characteristics of safety, environmental protection, simplicity, convenience and efficiency.

The invention discloses a synthetic method of linagliptin, wherein the method includes the following steps: (1) carrying out a reaction of 8-bromo-3-methylxanthine (a) and 1-bromo-2-butyne (b), to obtain 3-methyl-7-(2-butyne-1-yl)-8-bromo-xanthine (c); (2) carrying out a reaction of 3-methyl-7-(2-butyne-1-yl)-8-bromo-xanthine (c) and 2-chloromethyl-4-methylquinazoline (d), to obtain 1-[(4-methylquinazolin-2-yl)methyl]-3-methyl-7-(2-butyne-1-yl)-8-bromoxanthine (e); (3) adding 1-[(4-methylquinazolin-2-yl)methyl]-3-methyl-7-(2-butyne-1-yl)-8-bromoxanthine (e), (R)-3-Boc-aminopiperidine (f), potassium carbonate and acetonitrile into a reactor and mixing evenly, and carrying out a reaction under a state of heating reflux, to obtain t-butyloxycarboryl-linagliptin (g); and (4) removing a Boc protective group of t-butyloxycarboryl-linagliptin (g) in a methanol aqueous solution, to obtain linagliptin. The synthetic method has the advantages of environmental protection, no pollution, high production rate, and no impurities.

The invention discloses a method for preparing a high-purity taste-removing purple sweet potato pigment, and belongs to the field of food additives and agricultural product deep processing. The method for preparing the high-purity taste-removing purple sweet potato pigment comprises the steps that 1, pretreatment is conducted on purple sweet potato raw materials; 2, the purple sweet potato pigment is extracted from low-frequency microwave auxiliary acidified aqueous solution; 3, preliminary purification is conducted on macroporous resins; 4, high-speed counter-current chromatography separation and purification are conducted, and the taste-removing purple sweet potato pigment with concentration more than 95% is obtained. According to the method for preparing the high-purity taste-removing purple sweet potato pigment, the microwave auxiliary acidified aqueous solution is used for extraction, flocculants are added to flocculate mucoproteins, then macroporous resin static adsorption and dynamic elution are conducted, and the taste-removing and enrichment purification process is preliminarily accomplished, and the high-purity taste-removing purple sweet potato pigment is finally prepared through the high speed counter-current chromatography method in a separation mode. According to the method for preparing the high-purity taste-removing purple sweet potato pigment, technological processes are advanced, separation efficiency is high, recovery rate is high, product purity is more than 95%, preparation amount is large, an obtained product is free of peculiar smell, has few impurities and is good in solubility, and method for preparing the high-purity taste-removing purple sweet potato pigment is easy to popularize and use.

The invention relates to beta glucan beer with high yeast content and a preparation method of the beer. The beer comprises a feeding material and yeast, namely, by weight, 60 parts of barley malt, 20 to 40 parts of highland barley malt, 0 to 20 parts of wheat malt, 0.5 to 1.0 part of top fermented beer yeast and 0.2 to 0.4 part of lupulus; the mass ratio of the feeding material and water is 1: (3-4); the raw materials are subjected to wort preparation, beer fermentation and centrifugal separation to obtain the beta glucan beer with high yeast content and having the yeast number of 4*106-6*106 / mL. The beer is pure in taste, elegant, soft, fragrant, unique, white in foam, fine, smooth and strong in irritant effect to mouth, the top fermentation yeast is used for fermentation to produce the beer, the beer is sweet-smelling and has aromatic flavor.

The invention relates to the technical field of heating ventilation air conditioners and energy conservation, in particular to a multi-working-condition composite indirect air processing device and an air conditioning method thereof. The multi-working-condition composite indirect air processing device comprises shell, an air feeder, an exhaust fan, a wall-type heat exchanger and a surface type heat exchanger. An indoor air first inlet end, an indoor air second inlet end, an air feed opening end, a process air inlet end and exhaust opening end are arranged on the shell. A first valve and a second valve which can adjust opening degree are respectively disposed at the indoor air first inlet end and the indoor air second inlet end. The multi-working-condition composite indirect air processing device is reasonable and compact in structure and convenient to use, indoor air return is processed by switching between the wall-type heat exchanger and the surface-type heat exchanger or synergy of the two, the problem of air filtering difficulty is solved, and the ventilation air conditioning system under the weather conditions all year round is provided. In addition, due to the fact the air is processed in a composite manner, the multi-working-condition composite indirect air processing device is wide in application range and fields, safe, environmental friendly, simple and efficient.

The invention discloses a synthesis method of a linagliptin intermediate. The synthesis method comprises adding 1-[(4-methylquinazolin-2-yl)methyl]-3-methyl-7-(2-butyne-1-yl)-8-bromoxanthine (e), (R)-3-Boc-aminopiperidine (f), potassium carbonate and acetonitrile into a reactor, carrying out uniform mixing and carrying out a reaction process under the conditions of heating reflux, a reaction temperature of 80-85 DEG C and reaction time of 24-48h, wherein a mole ratio of 1-[(4-methylquinazolin-2-yl)methyl]-3-methyl-7-(2-butyne-1-yl)-8-bromoxanthine (e), (R)-3-Boc-aminopiperidine (f) to potassium carbonate is 1: (1.2-1.6): (3-7) and a ratio of 1-[(4-methylquinazolin-2-yl)methyl]-3-methyl-7-(2-butyne-1-yl)-8-bromoxanthine (e) to acetonitrile is 100: (400-1000)g / ml. The synthesis method of the linagliptin intermediate (g) prevents generation of debromination impurities (i), is simple and easy in a post-treatment step and solves the problem that the intermediate is not easily separated from a solvent and is difficultly purified and separated.

The invention discloses a selenium-rich material titanium acid-hydrolysate polybasic flocculating settling agent and preparation and application methods thereof and belongs to the field of solid-liquid separation. In order to solve the technical problem that as existing high-concentration high-viscosity selenium-rich material titanium acid-hydrolysate has small flocculent particles, much colloid and low specific weight, difficulty in flocculation and settling and difficulty in filtering settled mud residue are caused, the selenium-rich material titanium acid-hydrolysate polybasic flocculatingsettling agent is provided. The selenium-rich material titanium acid-hydrolysate polybasic flocculating settling agent is characterized by comprising, by mass, 0.5-3.0 parts of a flocculant, 0.2-2.0 parts of a settling support, 0.2-2.0 parts of an aid, and 97.0-99.5 parts of water; the flocculant and water add up to 100 parts by mass. Titanium supernatant acquired using the selenium-rich materialtitanium acid-hydrolysate polybasic flocculating settling agent has high settling speed and good filtering performance, settled mud residue is easy to separate, and the selenium-rich material titaniumacid-hydrolysate polybasic flocculating settling agent is worthy of popularization and application.

The invention relates to a production technique of nutritional soak-free soybeans, which belongs to the technical field of food processing. The production technique comprises the main processing steps of raw materials, screening, washing, soaking, draining, vacuum infiltration, draining, traying, quick freezing, vacuum cold-hot drying, cooling, package, and finished product. The technical key point of the production technique is characterized by adopting a vacuum cold-hot drying integrated processing technique, solving the technical problems that the conventional soybean milk manufacturing process has thick beany flavor, long time for soaking beans, long pulping time, difficult soybean milk filtration and the like, improving the biological value of the protein in the soybeans, and improving the quality of a product, wherein the product is nutritional and convenient, has a long shelf life, avoids soaking, can be directly used for making the soybean milk by a soybean milk machine, and is favorable for the health of a human body. Besides, the production technique has simple process and low production cost, and is easy for popularization and application.

The invention discloses a preparation method of linagliptin. The preparation method comprises putting t-butyloxycarbonyl-linagliptin (g) into a methanol aqueous solution and carrying out stirring so that the solution undergoes a reaction along with heating reflux in an inert atmosphere at a temperature of 25-50 DEG C for 3-12h, wherein a weight ratio of the t-butyloxycarbonyl-linagliptin (g) to the methanol aqueous solution is 100: (400-550). The preparation method carries out Boc protection base removal in a methanol aqueous solution in an inert gas protective atmosphere, is free of expensive trifluoroacetic acid-DCM in a Boc protection base removal reaction, only utilizes a cheap methanol-water system and has simple after-treatment processes. A trifluoroacetic acid-DCM system reaction produces more impurities and needs a very complex post-treatment purifying process. The preparation method prevents strong acid-produced intermediate (g) impurities and linagliptin amide bond fracture impurities.

The invention relates to the field of heating ventilation air conditioning and the energy-saving technology, and provides a filter-free annual-operating air conditioning device and an air conditioning method. The air conditioning device comprises an outdoor cooling device and an indoor air processing device, wherein the outdoor cooling device comprises a cooling device shell and an outdoor heat exchanging device; the cooling device shell is provided with an air inlet end and an air outlet end; the outdoor heat exchanging device is mounted in the cooling device shell. The air conditioning device is reasonable and compact in structure and convenient to use; by combination of the outdoor cooling device and the indoor air processing device, the indoor air processing device is adopted to process indoor air in summer, and the cold quantity of outdoor air is transferred indoors in winter, so that the problem of difficult air filtration is solved, and the solution of a ventilation and air conditioning system under the annual climatic condition is realized; the air conditioning device can be annually operated to process indoor air in regions under the arbitrary climatic condition, is relatively wide in application range and application fields, and has the characteristics of being safe, simple, convenient, environment-friendly and high-efficient.

The invention relates to a brewing method of full-wheat-malt turbid beer. The turbid wheat beer is prepared from full wheat malt for the first time; the full-wheat-malt turbid beer, which is completely prepared from the wheat malt, is prepared by adding coarse bran which is more than 20 meshes in grain size as a filtering medium in a full-wheat-malt turbid beer brewing process; and the full-wheat-malt turbid beer is prepared by virtue of such steps as conducting crushing, conducting saccharifying, conducting filtering by virtue of a filtering tank, adding hops, conducting boiling, conducting cooling and filling oxygen, inoculating a wheat beer yeast, conducting temperature-controlled fermentation and the like; the full-wheat-malt turbid beer, which is brewed with the application of the method, is simple in filtering operation, mash can be completely filtered in one time, and the obtained wheat beer is pure in taste and coordinated in liquor body. The brewing method, which is free from additional filtering equipment in a brewing process, is low in raw material cost and low in power consumption. The obtained beer product is turbid in liquor body, lightly yellow, delicate and rich in foam, strong in foam retention, intense in fragrance and obvious in fermentation and bread aroma.

The invention discloses a process for preparing flame retardant grade magnesium hydroxide by an ammonia method. The process comprises the following steps of: adding purified brine of which the Mg<2+> concentration is 40g / L and ammonia water into a reaction kettle and reacting for 60 minutes at 40 DEG C, wherein the ammonia excessive coefficient is 2.5; filtering and washing reaction slurry; and then drying and pulverizing to obtain a fibroid magnesium hydroxide crystal product. Compared with the prior art, through testing and researching, the process determines an optimal technological condition for producing the magnesium hydroxide by an ammonia method, effectively improves the conversion rate of magnesium, improves the filtering property of a filter cake through adding pure magnesium hydroxide as a seed crystal and solves the problem of difficult filtering because the filter cake changes along with the washing pH; the obtained magnesium hydroxide product conforms to the standard of the HG / T3607-2000 I grade of the flame retardant grade magnesium hydroxide, and indicated through TEM (Transverse Electric and Magnetic Field) morphology analysis, the product is fibroid crystal; and the magnesium hydroxide of the fibroid crystal has good dispersity and flowability.

The invention relates to an automatic extraction and separation method of seed-type medicinal materials. The automatic extraction and separation method comprises a dynamic extraction step and three steps of solid-liquid separation arranged after the dynamic extraction. By adopting the automatic extraction and separation method of the seed-type medicinal materials, the solid-liquid separation problem in the extraction process of active ingredients of the seed-type medicinal materials can be effectively solved, the traditional packet decocting method which is time-consuming and labor-consuming is abandoned, and the extraction and separation efficiency can be greatly improved.

The invention provides a production technology of dry red wine with red dates. The production technology comprises the following steps: selecting raw materials, cleaning, steaming and maintaining, and cooling; adding the raw materials to a fermentation tank, and fermenting; separating residues from pulp; ageing; firstly, filtering the aged pulp with kieselguhr, and carrying out super membrane filtration; and bartending, filling and sterilizing. The production technology of the dry red wine with red dates has the beneficial effects that the steps of extracting juice, degumming and clarifying are omitted; the technological process is relatively simple and convenient; as the degumming link is omitted in the overall technological process, the problem that the wine is difficult to filter is solved, and the filtering time is greatly shortened; a traditional chitosan clarifying process is replaced with super membrane filtration, so that the wine can be free of a sediment and good in color after being stored for a long period of time; the production technology of the dry red wine with red dates provided by the invention is an original fruit fermentation process; and the produced fermented wine is relatively strong in red date aroma and relatively good in taste.

The invention relates to a method for extracting heparin sodium from cattle lungs. The method comprises the following steps of: (1), slurring: (2), enzymolysis; (3), enzyme removing; (4) purification; and (5), freeze drying. The method can be used for overcoming the difficulties in filtration of an enzymolysis liquid in the production of the heparin sodium from the cattle lungs, avoiding the trivial procedures of long-time resin adsorption, washing elution, resin regeneration and the like, solving the problems of environment pollution caused by acid-base waste liquor and the like, simplifying the production process, reducing the production cost, improving the yield and quality of products, reducing the environment pollution and providing an effective production guarantee for the scale production of the lung heparin sodium. The yield of the products can reach 42,000u / kg (of the lungs), and the titer reaches 70-120u / mg.

The present invention discloses a rice bran meal industrial utilization method having a high temperature extrusion pre-treatment. The rice bran meal industrial utilization method comprises: blending rice bran meal being subjected to high temperature extrusion stabilization and solvent deoiling into a suspension, adding an amylase, carrying out steam heating, rapidly heating to a temperature of 35-45 DEG C, controlling a stirring rotation speed at 60-90 rotation / min and controlling a hydrolysis time of not more than 18 min, pumping into a reaction tank, separating rice bran phytic acid and dietary fibers, carrying out anaerobic fermentation on the liquid phase obtained through solid-liquid separation to obtain the fermentation broth containing butanol, acetone and ethanol, and carrying out enzymolysis, concentration and drying on the solid phase obtained through solid-liquid separation. According to the present invention, with the designed rice bran meal industrial utilization method having the high temperature extrusion pre-treatment, the difficult filtration problem caused by the phytate, dietary fiber and other component extraction separation process of the high temperature degreased rice bran meal is solved, and the filtration characteristics of the high temperature degreased rice bran meal are improved while the industrial utilization rate of the rice bran meal is ensured.

The invention relates to the field of an ammonium phosphate slurry filter technology, especially to an ammonium phosphate slurry filter unit and a filter method thereof. according to the invention, pH value, temperature, ammonium phosphate ratio and solid content of the ammonium phosphate slurry which enters the filter unit are defined to ensure that a liquid can rapidly infiltrate into the inside of a filter bag to support the filter bag after the ammonium phosphate slurry enters the filter unit; by the combination of aeration reverse osmosis filtration treatment, a filtrate can effectively enter the filter bag to leave impurities on the external surface of the filter bag; and by the combination of bag dumping treatment and cleaning treatment, the filter bag is regenerated. In addition, filtration difficulty due to high viscosity of the filtrate is avoided, purity of ammonium phosphate in the filtrate is raised, and quality of the ammonium phosphate product is fully ensured.

The invention relates to the technical field of water treatment equipment, and discloses a household direct drinking device, which includes a water inlet pipe, a tank body, and a water outlet pipe connected in sequence. The inner cavity of the tank body is sequentially provided with a PP cotton filter layer, an ultrafiltration filter layer, and an ultrafiltration filter layer. membrane and activated carbon filter layer, both ends of the inner wall of the tank are provided with horizontally opposite sliding rods, the two ends of the ultrafiltration membrane are slidably connected to the sliding rods, and the upper end of the sliding rods is fixed with a shrinkable air bag with a built-in solid fungicide. There is a contraction opening, and several aluminum balls with through holes are arranged in the cavity formed between the PP cotton filter layer and the ultrafiltration membrane. There is also a pipe on one side of the outer wall of the tank, and one end of the pipe is open to communicate with the PP filter. The cavity formed between the cotton filter layer and the ultrafiltration membrane, and the opening at the other end of the pipeline communicates with the cavity above the activated carbon filter layer. The present invention intends to provide a household direct-drinking device to solve the problems of difficulty in filtration and bacterial growth caused by gradual reduction of filter cake porosity in existing direct-drinking machines.

The invention relates to the technical field of heating ventilation air conditionings and energy conservation and provides an evaporative cooling and traditional refrigeration combined air conditioning device and an air conditioning method thereof. The air conditioning device comprises an evaporative cooling device and an air handling device, wherein the evaporative cooling device comprises a cooling device housing, a direct evaporation refrigeration filler and a surface type heat exchange device; an air inlet end and an air exhaust outlet end are arranged on the cooling device housing; the direct evaporation refrigeration filler is internally mounted in the cooling device housing; a sprinkling device is arranged above the direct evaporation refrigeration filler. The air conditioning device provided by the invention is reasonable in structure and convenient to use; since the evaporative cooling device and the air handling device are adopted to collaboratively treat indoor air return, the problem of difficulty in air filtration is solved and the solution of the ventilation air-conditioning system under climatic conditions throughout the year is achieved; as the air conditioning device can operate and treat indoor air all through the year in the region under any climatic condition, the applied range and field of employment become wider; the air-conditioning device has the characteristics of safety, environmental protection, simplicity, convenience and efficiency.

The invention discloses a production method of low-purine beer, which comprises the following steps: saccharifying, gelatinizing, secondary saccharifying, boiling and fermenting. The invention adopts a double-mash leaching dual-saccharifying technique, and the addition amount of the auxiliary materials is 75%, thereby lowering the purine content in the beer (8-15 mg / L), greatly enhancing the production efficiency and the use rate of the fermentation tank and saving the production cost; and the product quality is acceptable and stable.

The invention discloses a production process of phthalocyanine blue series dye direct blue 199. The production process comprises the following steps: adding chlorosulfonic acid and copper phthalocyanine in a four-necked bottle, stirring and pulping for 1.5 to 2.5h in a sealing state, performing temperature rise for 135 to 140 DEG C, and performing heat preservation for 2.5 to 3.5h, cooling to roomtemperature, using ice to dilute dye, and filtering to obtain a sulfonated filter cake for later use; adding the sulfonated filter cake to a three-necked bottle, then adding industrial ammonia waterand ethylene glycol, stirring for 4h at room temperature, performing temperature rise slowly to 40 to 45 DEG C, reacting for 4h until the dye is completely dissolved; carrying out temperature rise to70 to 75 DEG C, stirring for 2.5h, removing ammonia until pH is 6.5 to 7.5, then cooling to room temperature, and adjusting pH to be 8 to 9 to prepare the phthalocyanine blue series dye direct Blue 199. The production process of the phthalocyanine blue series dye direct blue 199, disclosed by the invention, solves the problems of generation of pressure-filtration wastewater and the difficulty in membrane filtration in salting out of the traditional process, and the sulfonation degree is improved, so that the affinity of the dye and paper becomes better, and the coloring effect of the paper isincreased.