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75 results about "No formation" patented technology

Method for gas-solid contacting in a bubbling fluidized bed reactor

The present invention relates to a method for gas-solid contacting in a bubbling fluidized bed reactor by:(a) introducing into a reactor with bed length to bed diameter ratio below about 5.0, a primary gas consisting essentially of reactant(s) of the reaction to be carried out in the bed of solid particles through a primary gas distributor located at the reactor bottom at a superficial gas velocity Up, which is very close or equivalent to the minimum fluidization velocity Umf, required for achieving the incipient fluidization of the solid particles in the bed to obtain an emulsion phase consisting essentially of the solid particles and the primary gas with little or no formation of gas bubbles to achieve incipient fluidization or liquid-like behavior of fluidizable solid particles;(b) forming gas bubbles in the incipiently fluidized bed by introducing through a secondary gas distributor located immediately above the primary gas distributor a secondary gas, selected from one of the reactants which is used in excess of that required for the reaction stoichiometry, steam, an inert or a mixture of two or more thereof at a superficial gas velocity, Us, which is related to the superficial velocity of the primary gas such that a ratio of the superficial velocity of the secondary gas to the superficial velocity of the primary gas Us / Up, is in the range from about 0.5 to about 10.0, preferably from about 1 to about 5.
Owner:COUNCIL OF SCI & IND RES

Method for synthesizing isomerous tridecanol polyoxyethylene ether

The invention relates to a synthetic method of isomeric tridecanol polyoxyethylene ether, belonging to the organic compound synthesis technical field, which uses the materials of isometric tridecanol and ethylene oxide. The synthetic method is characterized in that: firstly, the polymerization reaction is carried out with the boron trifluoride catalyst, and then the isomeric tridecanol polyoxyethylene ether is obtained by the polymerization reaction carried out with the strong alkali catalyst; wherein, the addition of the boron trifluoride adopted in the reaction is 0.1 to 0.6 percent of the weight of the isometric tridecanol, the strong alkali catalyst is one of or the mixture of solid sodium methylate, methanol solution of sodium methylate, KOH and NaOH, the addition of the strong alkali catalyst is 0.05 to 0.2 percent of the weight of isomeric tridecanol polyoxyethylene ether. The synthetic method of isomeric tridecanol polyoxyethylene ether has the advantages that: the synthetic method adopts a two-step reaction technical proposal that: the polymerization reaction is carried out with the boron trifluoride catalyst at first, and then the polymerization reaction is carried out with the strong alkali catalyst, so the isomeric tridecanol polyoxyethylene ether has mild reaction conditions, high yield, no formation of impurities and environment friendly performance.
Owner:ZHEJIANG HUANGMA TECH

Coated granular microbial agent and production method thereof

The invention relates to a coated granular microbial agent and a production method thereof. The coated granular microbial agent is prepared by the following raw materials by weight percent in a mixing way: 7-20 percent of a microbial liquid, 50-85 percent of an adsorption carrier, 0-40 percent of a binding agent and 1-10 percent of a coating agent. The production method comprises the following steps: firstly weighing the raw materials with corresponding percent, mixing the adsorption carrier with the binding agent, adding the microbial liquid to adsorb and then crushing, performing granulation on the crushed material, drying the material after granulation and screening to obtain the finished product granular material through a screening machine, performing aeration-cooling on the finished product granular material and conveying the material after cooling to a coating machine and adding the coating agent for coating, and performing aeration-cooling and drying on the material after coating. The coated granular microbial agent has the benefits of no chemical reaction, no air slaking, no crushing for granules, no formation like sticky mud, good fluidity, high strength, soil adjustment, soil improvement and fertilizer effect enhancement when being mixed with chemical fertilizers such as urea, compound fertilizer and the like for use, and reduces the use cost.
Owner:北京世纪阿姆斯生物技术有限公司

Method for gas - solid contacting in a bubbling fluidized bed reactor

The present invention relates to a method for gas-solid contacting in a bubbling fluidized bed reactor by: (a) introducing into a reactor with bed length to bed diameter ratio below about 5.0, a primary gas consisting essentially of reactant(s) of the reaction to be carried out in the bed of solid particles through a primary gas distributor located at the reactor bottom at a superficial gas velocity Up, which is very close or equivalent to the minimum fluidization velocity Umf, required for achieving the incipient fluidization of the solid particles in the bed to obtain an emulsion phase consisting essentially of the solid particles and the primary gas with little or no formation of gas bubbles to achieve incipient fluidization or liquid-like behavior of fluidizable solid particles; (b) forming gas bubbles in the incipiently fluidized bed by introducing through a secondary gas distributor located immediately above the primary gas distributor a secondary gas, selected from one of the reactants which is used in excess of that required for the reaction stoichiometry, steam, an inert or a mixture of two or more thereof at a superficial gas velocity, Us, which is related to the superficial velocity of the primary gas such that a ratio of the superficial velocity of the secondary gas to the superficial velocity of the primary gas Us / Up, is in the range from about 0.5 to about 10.0, preferably from about 1 to about 5.
Owner:COUNCIL OF SCI & IND RES

Method for synthesizing isomerous tridecanol polyoxyethylene ether

The invention relates to a synthetic method of isomeric tridecanol polyoxyethylene ether, belonging to the organic compound synthesis technical field, which uses the materials of isometric tridecanol and ethylene oxide. The synthetic method is characterized in that: firstly, the polymerization reaction is carried out with the boron trifluoride catalyst, and then the isomeric tridecanol polyoxyethylene ether is obtained by the polymerization reaction carried out with the strong alkali catalyst; wherein, the addition of the boron trifluoride adopted in the reaction is 0.1 to 0.6 percent of the weight of the isometric tridecanol, the strong alkali catalyst is one of or the mixture of solid sodium methylate, methanol solution of sodium methylate, KOH and NaOH, the addition of the strong alkali catalyst is 0.05 to 0.2 percent of the weight of isomeric tridecanol polyoxyethylene ether. The synthetic method of isomeric tridecanol polyoxyethylene ether has the advantages that: the synthetic method adopts a two-step reaction technical proposal that: the polymerization reaction is carried out with the boron trifluoride catalyst at first, and then the polymerization reaction is carried out with the strong alkali catalyst, so the isomeric tridecanol polyoxyethylene ether has mild reaction conditions, high yield, no formation of impurities and environment friendly performance.
Owner:ZHEJIANG HUANGMA TECH

Full-plastic heat exchanger

The invention discloses a full-plastic heat exchanger. The full-plastic heat exchanger comprises an upper chamber and a lower chamber, each of the upper chamber and the lower chamber is provided with an interior storage cavity, a medium inlet convenient for entering of a heating or refrigerating liquid medium is formed in the upper chamber, and a medium outlet allowing the liquid medium to flow out after working is formed in the lower chamber. The full-plastic heat exchanger is characterized in that the upper chamber and the lower chamber are communicated with each other via a plurality of uniformly distributed heat exchange pipes, and the liquid medium flows along the heat exchange pipes to achieve heat exchanging. Compared with an existing metal heat exchanger, the full-plastic heat exchanger has the advantages the components such as the upper chamber, the lower chamber and the heat exchange pipes are made of plastic, so that scale formation prevention, no formation of heavy metal ions, corrosion resistance and no pollution to water are achieved; the full-plastic heat exchanger also has the advantages of low energy consumption in a production process, low in environment pollution and production cost, remarkable beneficial effect and convenience in application and promotion.
Owner:山东融合环保科技有限公司

Yellowing-free polyurethane matte varnish

The invention relates to yellowing-free polyurethane matte varnish. The yellowing-free polyurethane matte varnish is characterized in that a host of the yellowing-free polyurethane matte varnish comprises soybean oil modified alkyd resin, mixture of butyl acetate and propylene glycol monomethyl ether acetate, a defoaming agent, a levelling agent, an anti-settling agent, extinction powder and an anti-yellowing auxiliary, a curing agent comprises toluene diisocynate (TDI) tripolymer, a toluene diisocynate (TDI)-trimethylolpropane addition product and butyl acetate, and a diluent comprises butyl acetate, dimethyl carbonate, propylene glycol monomethyl ether acetate and dimethylbenzene. By adopting the technical scheme, the yellowing-free polyurethane matte varnish has the beneficial effects that the yellowing-free polyurethane matte varnish is applied to surface finishing of woodware; spraying mode is adopted during coating, the yellowing-free polyurethane matte varnish has the characteristics of high hardness, good fullness, strong adhesion and no formation of bubbles and pinholes and has the prominent characteristics that drying speed is high, especially low-temperature drying performance is good, cost is low, matting property is good and transparency is excellent as compared with the yellowing-free polyurethane matte varnish used in the current market.
Owner:上海展辰涂料有限公司 +4
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