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1237results about How to "Reduce dryness" patented technology

Preparation method for aluminum oxide by direct forming method

The invention discloses a preparation method for aluminum oxide by a direct forming method. The method is characterized in that the aluminum oxide is directly formed by a wet filter cake, wherein pore volume is 0.3-0.8ml/g; a specific surface area is 150-300 m<2>/g; and crushing strength is 30-120 N/particle; the preparation process comprises the steps: a) meta-aluminate containing aluminum or a strong acid salt compound is neutralized with a precipitator solution at a temperature of 30-80 DEG C and pH of 6-9; accessory ingredient is added in a neutralizing process; mixture is aged for at least 10min after neutralizing; b) prepared aluminium hydroxide gel is washed by de-ionized water for 4-10 times; dosage of the de-ionized water for each time is 10-40 times of mass of a dried substrate of prepared aluminium hydroxide; a hydrated alumina filter cake is obtained after washing and filtering; content of the aluminium hydroxide in the filter cake is controlled to be 5-50%; and c) the accessory ingredient is added into one or various liquid in the step a) and step b); the filter cake after washing is formed by a normal forming method; and the formed filter cake is dried at a temperature of 80-120 DEG C and calcined at a temperature of 450-1000 DEG C to obtain a finished product of the aluminum oxide.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Preparation of compound polysaccharide humectant and application of compound polysaccharide humectant to cigarettes

The invention discloses the preparation of a compound polysaccharide humectant and application of the compound polysaccharide humectant to cigarettes. The preparation method comprises the following steps of: (1) crushing compound Chinese medicines such as Adenophora elata, dwarf lilyturf tuber, and platycodon grandiflorus, adding water, slightly boiling, performing reflux extraction, mixing extracting solution, and filtering; (2) adding protamex and high-temperature amylase into the extracting solution, and performing enzymolysis; (3) absorbing naturally cooled enzymolysis extracting solution by using a macroporous resin column, and collecting flow-through liquid; (4) concentrating the flow-through liquid in a rotary evaporator until the moisture is not evaporated to obtain the polysaccharide humectant; and (5) dissolving the polysaccharide humectant in water and adding into cut tobacco, wherein the humidification effect of cigarettes is remarkably improved, and the dry sensation of the cigarettes is reduced and the sweet degree of the cigarettes is strengthened when the cigarettes are smoked. The invention has the outstanding advantages that: the compound polysaccharide humectant can improve the aesthetic quality of the cigarettes, reduce the dry sensation of smoke, improve the sweet degree and comfort degree, and has remarkable effects of promoting the secretion of saliva or body fluid and humidifying; and the application of the technology cannot change the conventional cigarette processing technology, and the technology has actual application value.
Owner:广州华芳烟用香精有限公司
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