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

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 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 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.