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.

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 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 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 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 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 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 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.