46results about How to "Increase the use concentration" patented technology

The invention relates to a high-interface-efficiency surfactant and a preparation method thereof. The problems of low interface efficiency, high use concentration and deposition after meeting divalent ions of oil displacement surfactants in the prior art are mainly solved. The molecular general formula of the high-interface-efficiency surfactant is formula I shown in the specification. In the formula I, M is anyone of alkali metals or ammonium groups, R is C8-C40 alkyl group, and the value of m+n is 1-40. The surfactant provided by the invention well solves the problems, and can be used in intensified oil production.

A preparation of chitosan oligosaccharide by degradating chitose with ozone, including steps of: adding acid solution of chitose into ozone degradation groove, adding ozone catalyst, insufflating ozone, reacting for 30-80 min at temperature of 10-100 DEG C. under agitation of high speed and irradiation of ultraviolet to get degradation solution, intercepting degradating product of chitose with degree of polymerization between 3 to 10 or 3 to 20 by membrane separation, concentrating and spray drying to obtain active chitosan oligosaccharide. The invention has advantages of simple operation, faster degradation speed, dramaticly reduced reaction cycle, and production cost is obviously reduced. Ozone is degradated while being decolored, so that no browning of chitosan oligosaccharide occurs. The content of active chitosan oligosaccharide (with degree of polymerization between 3 to 10 or 3 to 20) in the invention is not less than 90%.

The invention discloses a plant growth regulator used for grape expansion, in particular to a dedicated expansion agent for grapes, which is prepared by the following components in parts by weight: 1-100 parts of gibberellin, 1000-3000 parts of monopotassium phosphate and 800-3000 parts of carbamide. Compared with the prior art, the invention is mainly used for promoting the expansion of grapes, has convenient use and good effect, balances each growth part of grapes, and promotes growth of grape fruit; meanwhile, the accelerator of the invention is mainly biological agent and has no harm to human body; and the use concentration can be increased relatively according to demands.

In the method, sulfonated polymer is dissolved in organic solvent. Added organic modified montorillonite clay is dispersed on basal body of polymer evenly. Membrane is formed through slobbering method. Through drying and stripping membrane in water produces membrane needed. Solving difficult problem of methanol infiltration of proton exchange membrane in use for direct fuel cell of methanol, the invention possesses features of simpler technique, and low cost of material etc.

The invention belongs to the technical field of biomass chemistry and chemical engineering, and particularly relates to a co-production method of camellia oleifera xylooligosaccharide, lignin and active carbon. The method comprises the following steps: taking camellia oleifera shells as a raw material, carrying out a zinc chloride variable-temperature pretreatment and filtering; treating the filter residue I with zinc chloride, filtering, carbonizing and activating to obtain active carbon; cooling and filtering the filtrate I, drying the obtained filter residue II to obtain lignin, and concentrating and drying the obtained filtrate II to obtain xylooligosaccharide. A single catalyst zinc chloride is adopted for the first time, serves as a catalyst for the pretreatment of the camellia oleifera shells and also serves as an activating agent for preparing active carbon from camellia oleifera shell solid residues; meanwhile, through combination of specific variable-temperature pretreatmentand an activation process, lignin is obtained, the yield of xylooligosaccharide and active carbon is greatly increased, and the performance index of the active carbon is more excellent, so that the utilization rate of camellia oleifera shell components and the additional value of the product are higher.

The invention relates to a carbonarius paste and a preparation method thereof. The carbonarius paste is prepared from, by weight, 15-30% of carbon black, 0.1-1.0% of a wetting agent, 1.5-15% of a dispersing agent, 0.6-3% of a pH adjusting agent and the balance dispersion medium. According to the carbonarius paste, the structure of the dispersing agent is similar to that of the wetting agent, the using concentration of the carbon black is increased, the preparation technology is simple, and the carbonarius paste product higher in concentration and stable in state is obtained.

The invention relates to a heavy oil hydrogenating and modifying method, which is characterized in that a heavy oil raw material, heavy cycle oil and a catalyst are uniformly mixed in a premixing device, and are introduced with hydrogen in a liquid phase fluid bed reactor, a hydrotreatment reaction is carried out under the heavy oil hydrotreatment condition, the hydrogenation products is fractionated to light distillate oil and heavy distillate oil in a distillation column, the light distillate oil leads out the apparatus, the heavy distillate oil is circulated to the premixing device and is mixed with the heavy oil raw material; by taking total weight of the catalyst as a reference, the catalyst comprises 2-18wt% of metallic element and 82-98wt% of non metallic element, wherein, by taking the weight of the metallic element as a reference, more than 95wt% of metallic element is V, Ni and VI B family metallic element; by taking the weight of the non metallic element as the reference, more than 95% of non metallic element is C and S, and at least a part of S and the metallic element are existed with a sulfide form of the metallic element. The heavy oil hydrogenating and modifying method is suitable for hydrogenation and conversion of the heavy oil, and is especially suitable for hydrotreatment of inferior heavy oil with high metal, high charcoal residue and high condensed ring substance.