41results about How to "Hydrophobic and lipophilic" patented technology

The invention relates to a method for deacidification of an alkylation reaction product. In the method, after being subject to gravity settling, mixed emulsified liquid of the alkylation reaction product (hydrocarbon oil) and sulfuric acid passes through a component with hydrophobic modified ceramic membrane at a membrane surface speed of 0.01-5m / s for separation, and the deacidification of oil is achieved in a cross current filtration mode under the operation pressure of 0.01-0.3MPa and at the operation temperature of 0-40 DEG C. Under the push of pressure, the oil passes through the ceramic membrane, acid in the oil is trapped, and the acid content in the obtained oil is lower than 100ppm, thereby greatly reducing alkaline usage and waste water generation amount in an acid-base refine system of an alkylation technology and reducing the use of electrostatic precipitation; and the ceramic membrane surface is subject to hydrophobic modification, thus the contact angle of water droplet on the membrane surface is 70 degrees-16 degrees. The method is suitable for removal of polar liquid in various oils, has the advantages of simple process, low energy consumption, high separation precision, no environment pollution and high economic and practical value, and is easy to achieve industrial application.

The present invention relates to a method for producing a high-quality filtration material by using waste walnut shells. The method comprises: sequentially carrying out high-temperature and high-pressure ultrasonic degreasing, drying, crushing, air separation, atmospheric pressure air breaking, color selection and other process steps on waste walnut shells. According to the present invention, the method has characteristics of reasonable process route, high automation degree, and low production cost; the reconfigurable modular technology is adopted as the core, the high-temperature and high-pressure ultrasonic degreasing, the drying, the crushing, the atmospheric pressure air breaking, the color selection and other key technologies are integrated to improve the inherent quality of the walnut shell filtration material, the technical steps such as air separation and color selection are performed to achieve the refining of the walnut shell filtration material and improve the sensory quality, and the research and development and the promotion of the technology provide positive significance for the fields of improvement of the walnut product added value, extending of the rural economy forestry and fruit industry planting chain, promotion of the walnut fruit industry deep processing industry development, and the like.

The invention discloses a superhydrophobic sponge, its preparation method and application. The method is to put the prepared polydivinylbenzene into absolute ethanol, stir ultrasonically to prepare a polydivinylbenzene suspension, soak the cleaned and dried sponge for 3 min, and then put it in an oven to dry to obtain Superhydrophobic sponge. Compared with other processes, the preparation process of the present invention is simple and feasible, the environment is mild, and there is no requirement for complicated equipment and instruments. The contact angle can reach 154.4°, showing superhydrophobic and superlipophilic properties, which can effectively separate oil-water mixtures and also have good adsorption for volatile organic compounds. The superhydrophobic sponge prepared by the invention can be widely used in the fields of water pollution control, air pollution control and the like.

The invention discloses a method for extracting taro starch and a method for preparing modified taro starch from the taro starch. The method for extracting the taro starch is characterized by specifically comprising the steps of peeling and cleaning taros, slicing the taros, soaking the sliced taros in an ammonia water solution for 2-4 min, taking out the sliced taros, crushing the sliced taros, continuously soaking the crushed taros in the ammonia water solution for 2-4 h, sieving, centrifuging filtrate for 15 min at the speed of 3,000 r / s, washing the precipitate obtained through centrifuging by using water, repeatedly centrifuging the precipitate for 15 min at the speed of 3,000 r / s, baking the precipitate which is finally obtained through centrifuging in a baking oven at the temperature of 40-50 DEG C so as to obtain coarse dry starch, crushing the coarse dry starch, degreasing the crushed coarse dry starch for 20-24 h by using methanol with the volume percent of 85%, degreasing the crushed coarse dry starch for 6-8 h by using anhydrous ethanol, baking the crushed coarse dry starch in the baking oven at the temperature of 40-50 DEG C, and crushing, thereby obtaining the taro starch. The methods have the advantages that the deproteinizing and degreasing effects are good, impurities in finished products are few, and the prepared modified taro starch is low in gelatinization temperature, high in viscosity, high in transparency, good in freeze-thaw stability and strong in ageing resistance.

The invention relates to a method for preparing a super-hydrophobic and super-oleophilic polymeric sponge through a biological mineralization method. The preparation method includes the steps that polyethyleneimine, Ca2+ ions and sodium polystyrenesulfonate are attached to a sponge on multiple layers through electrostatic force, under the effect of polyethyleneimine and sodium polystyrenesulfonate, the Ca2+ ions and CO2 are induced for a gas phase mineralization reaction, thus, a coarse surface structure is provided for the polymeric sponge, finally low-surface-energy matter is used for surface modification, and then the super-hydrophobic and super-oleophilic polymeric sponge is obtained. The process is simple, the reaction conditions are mild, the adopted raw materials are cheap and easy to obtain, and the prepared sponge can selectively absorb floating oil on the water surface, can be compressed multiple times to be reused, and is a novel material expected to be applied to marine floating oil pollution treatment.

The invention discloses a ZIF-8 / nonwoven fabric composite material and a preparation method thereof. The preparation method includes following steps: preparing a ZIF-8 primary solution; putting nonwoven fabric into the ZIF-8 primary solution; drying to obtain the ZIF-8 / nonwoven fabric composite material. ZIF-8 particles are deposited on the surface of the nonwoven fabric in situ by soaking the nonwoven fabric into the ZIF-8 primary solution and standing for aging and uniformly distributed on the surface of the nonwoven fabric, and the ZIF-8 / nonwoven fabric composite material with a multistagehole structure is obtained by adopting the ZIF-8 particles to fill the nonwoven cloth; the composite material has good adsorption performance and excellent hydrophobicity and lipophilicity. Methods ofin-situ deposition and low-temperature drying are adopted, so that the preparation method is simple in process, low in cost and energy consumption and suitable for popularization and implementation.

The invention discloses a catalyst used in production of isobutene through cracking of methyl tert-butyl ether (MTBE) and a preparation method thereof. The catalyst comprises alumina and a Silicalite-1 molecular sieve; alumina and the Silicalite-1 molecular sieve are mixed and molded and then undergo hydro-thermal treatment, and a resultant is used as the catalyst; preferably, the catalyst is loaded with a proper amount of active metal components; and the catalyst is used for cracking of MTBE for production of isobutene. The catalyst prepared in the invention has good catalysis performance, enables good selectivity on methanol and isobutene and a high conversion rate of MTBE to be obtained and inhibits generation of dimethyl ether, a reaction by-product.

The invention discloses a superhydrophobic textile cloth, a preparation method and application thereof. The method is as follows: under the action of initiator azobisisobutyronitrile, divinylbenzene is polymerized on textile cloth in an organic solvent to generate polydivinylbenzene and superhydrophobic textile cloth. The contact angle of the woven fabric can reach 155.7°, showing superhydrophobic and superoleophilic properties, which can effectively and selectively separate oil-water mixtures. The superhydrophobic textile fabric prepared by the invention can be prepared by a hydrothermal method, has stable structure and performance, and good reproducibility, and can be widely used in the fields of water pollution control, volatile organic compound adsorption and the like.