47results about How to "Non-biodegradable" patented technology

The invention relates to a solid lubricant glycan derivative for a drilling fluid. Raw materials of the derivative comprise, 30-40 parts of hydroxypropyl guanidine gum, 3-4 parts of propylene epoxide,0.1-0.15 part of sodium hydroxide, 20-30 parts of dodecyl alcohol, 0.15-0.2 part of a catalyst, 10-20 parts of white oil, 2-5 parts of a surfactant, 0.1-2 parts of an antifoaming agent, 10-20 parts of mica powder, 1-3 parts of a bactericide, 6-10 parts of ethanol and 10-25 parts of water. A preparation method includes the steps that the hydroxypropyl guanidine gum, the sodium hydroxide and the water are added into a reaction still and stirred continuously, and the propylene epoxide is added for stirring, refluxing and a reaction; a reaction solution is heated, the catalyst is added, and a mixed solution of the ethanol and the dodecyl alcohol is added under stirring for a reaction; the reaction material solution is cooled to the room temperature, the white oil, the surfactant, the antifoaming agent, the mica powder and the bactericide are added, stirred uniformly, dried and ground into powder, and then the derivative is obtained. The lubricating coefficient reduction rate is higher than or equal to 90%, the derivative has good high-temperature drop reduction performance and salt resistance, the preparation conditions are easily achieved, and the derivative is environmentally friendly.

The invention discloses an environmentally friendly biodegradable dust suppressant and a preparation method thereof. The preparation method comprises adding natural latex, natural plant fibers, glycerol and a surfactant into a mixer, stirring fully to mix them well, adding slowly the mixture into water, and stirring fully to obtain the environmentally friendly degradable dust suppressant. The environmentally friendly biodegradable dust suppressant has the functions of film forming, wetting and coagulation, and characteristics of no ash, no toxicity, no corrosivity, no secondary pollution, favorable biodegradability, simple preparation process, and low cost. After being sprayed on the surface of a material, the environmentally friendly biodegradable dust suppressant can form a continuous, intact, strong and ductile shell film to confine dust in a shell, and thus air pollution is avoided and material loss is reduced. The environmentally friendly biodegradable dust suppressant can resist the effects of wind power, rainwater and a general external force, is suitable for dust control of road surfaces, coal piles, ore piles, building sites, heat-engine plants, steel mills and coal transportation by trains, and has broad social and economic benefits.

The application of a high-efficiency inhibitor 5'-ATP-2Na in magnesite positive flotation decalcification belongs to the field of magnesite flotation decalcification inhibitors. This application is to add highly effective inhibitor 5′‑ATP‑2Na (adenosine‑5′‑triphosphate disodium salt hydrate) in the preparation of magnesite slurry during the magnesite positive flotation decalcification process The amount of added efficient inhibitor 5′-ATP-2Na accounts for 0.8mmol / L~1.3mmol / L in molar concentration of magnesite pulp; the mass percentage concentration of magnesite in magnesite pulp is 15~30 %. The high-efficiency inhibitor 5′-ATP-2Na is used for the decalcification of magnesite by positive flotation. Under the sodium oleate or oleic acid flotation system, by adding the high-efficiency inhibitor 5′-ATP-2Na, the simultaneous expansion of magnesite The flotation difference of the calcium gangue mineral dolomite realizes the efficient separation of magnesite and dolomite, thereby reducing the magnesium impurities to improve the quality of magnesite concentrate products, and providing a new method for the flotation separation of high calcium and low grade magnesite flotation inhibitors.

The invention relates to a method for removing chloro-olefin in water through in-situ chemical oxidation, which comprises the following steps: (1) firstly, adding water in a reaction flask, then adding sodium hexametaphosphate with mass fraction of 0.01% and sodium dodecyl sulfate with mass fraction of 0.1%, and finally adding a potassium permanganate solution having a fixed molar ratio with chloro-olefin; (2) adding a 20 mg / L TCE or PCE solution into the reaction flask in the step (1) and then filling up the reaction flask with water, wherein the molar ratio of the TCE to the potassium permanganate solution is 2:1, and the molar ratio of the PCE to the potassium permanganate solution is 15:1; (3) putting the reaction flask obtained in the step (2) in a roller and reacting in an incubator at constant temperature to obtained treated water, wherein the reaction temperature is 20 DEG C, and the rotation speed of the roller is 7r / min. According to the invention, underground water polluted by TCE and PCE is treated by the adoption of the potassium permanganate solution, and the participation of sodium hexametaphosphate and a surfactant, the method is simple and feasible, the cost is low, the final dechlorination efficiency of TCE is increased by more than 19.5%, and the final dechlorination efficiency of PCE is increased by more than 7.5%.

The invention provides an emulsified viscosity-reduction oil displacement composition for heavy oil reservoirs. The emulsified viscosity-reduction oil displacement composition for heavy oil reservoirs is composed of following components in percentage by weight: 0.1-0.3% of anionic polymer, 0.01-0.1% of non-ionic surfactant, 0.02-0.12% of emulsion stabilizer, a right amount of inorganic salt and the balance of water. The oil displacement composition provided by the invention has the advantages of lower cost, simple preparation process, favorable biodegradability, high safety, environment friendliness, favorable viscosity-reduction and oil-washing effects on heavy oil, and high oil displacement efficiency.

The invention relates to the fields of biological functional materials and nanotechnologies and particularly relates to a novel amphiphilic polymer nano medicine carrying micelle which is proper in particle size distribution range, stable in encapsulation rate and medicine carrying rate, high in biological safety and capable of increasing bioavailability of ursolic acid and a structural modifier thereof. The technical scheme of the invention provides a medicine carrying micelle capable of increasing bioavailability of ursolic acid and a structural modifier thereof. The medicine carrying micelle is characterized in that the preparation method comprises the following steps of 1, synthesizing PLGA-PEG-PLGA (poly(lactic-co-glycolic acid)-polyethylene glycol-poly(lactic-co-glycolic acid)) by using a ring opening polymerization method; 2, simultaneously dissolving an insoluble drug and a triblock copolymer into an organic solvent to prepare an oil phase; 3, dropwise adding the oil phase into a water phase stirred at a high speed; 4, stirring until the oil phase is completely volatilized, and filtering a membrane in the solution to obtain a medicine carrying nanoparticle contained ultrapure water solution; freezing and drying to obtain the medicine carrying micelles.