42results about How to "Low water insoluble content" patented technology

The invention provides a water-solubility instant potassium sulfate fertilizer and belongs to the technical field of an agricultural fertilizer. Agricultural potassium sulfate is purified by adopting a recrystallization process of 'heat dissolution and cold crystallization', and insoluble matter is removed out of water, so as to obtain high-purity crystal potassium sulfate; 0.1-3% of component A, 0.5-5% of component B and 0-1% of component C are added; the component A is a dispersant and water softener; the component B is an acid providing agent; and the component C is a wetting agent. The instant potassium sulfate fertilizer is packaged in mechanical mixing and drying manners. By adopting the method provided by the invention, the content of the insoluble matter can be effectively reduced, the dissolution degree is quickly improved, and the water-solubility instant potassium sulfate fertilizer is simple in technological process and has strong practical value. The product disclosed by the invention can be widely applied to agricultural facilities integrated with foliage spraying, trickle irrigation, sprinkling irrigation and the like.

The invention provides an environmentally-friendly dust suppressant with a self-luminous function. The dust suppressant comprises, by mass, 0.1-20% of a water-soluble polymer, 0-10% of polyol, 0.01-15% of water-soluble modified plant polysaccharides, 0.01-15% of a dispersing aid, 0.1-30% of a luminous component, 0.01-5% of a preservative, and the balance of water. The environmentally-friendly dustsuppressant with the self-luminous function has the advantages of excellent dust suppression effect, uniformity in color, no pungent smell, small content of water-insoluble substances, no blocky or flocculent precipitate, convenience in production, high luminance and long afterglow time, can be repeatedly excited, and can be used as a roadbed or a wind shield wall warning of a construction site to avoid scratching of vehicles during night operation and improve the night operation safety. The environmentally-friendly dust suppressant has very small corrosivity to steel and harm to plant seeds,and can meet the use requirements of night operation warning of construction sites such as coal mines and the like.

The invention relates to a preparation method of low-molecular-weight plant gelatin powder. The method comprises the following steps of: hydrating, rubbing, rolling and tackifying a plant gelatin sheet; sequentially carrying out enzymolysis treatment by utilizing mannose enzyme liquid and neutral protease liquid; and drying prepared plant gelatin with the certain molecular weight and treating into gelatin powder with the 120-160-mesh size. The plant gelatin sheet prepared by using the method disclosed by the invention can be any one of a guanidine gelatin sheet, a sesbania gelatin sheet and a tonka-bean gelatin sheet. A prepared product has the advantages of low water insoluble matters, high thickening efficiency, rapidness in thickening, protruding salt solubility, temperature stability and corrosion resistance, capability of being repeatedly used, and the like.

The invention discloses an oil-gas field fracturing fluid, a temporary plugging agent and a well cementing agent containing a PVA (Polyvinyl alcohol) fiber. The PVA fiber is prepared by spinning PVA being 1000 to 3500 in polymerization degree, and 80 to 99.9 mole percent in alcoholysis degree. The oil-gas field fracturing fluid has the advantages of higher temperature resistance and shearing resistance, small environmental damage, low cost, environmental friendliness, very good sand carrying function and facilitation of fracturing fluid flowback; the oil-gas field well cementing agent can enhance the strength and the toughness of a well cementing material, can play a role in preventing leakage, is degradable and has low environmental damage; the oil-gas field fracturing temporary plugging agent has a good filtration reduction effect, forms a shielding layer at a position to be plugged temporarily to realize successful steering of the fracturing fluid, and is degradable; components left underground do not cause environmental pollution.

The invention relates to a high-temperature acidic plant adhesive fracturing fluid and a preparation method thereof. The high-temperature acidic plant adhesive fracturing fluid comprises, by mass, 0.55% of a thickening agent, 1.5% of a conditioner, 0.8% of a cross-linking agent, 0.5% of a cleanup additive, 0.5% of a clay stabilizer, 0.1% of a sterilizing agent, 0.1% of a demulsifying agent and thebalance water. The fracturing fluid has the advantages that a fracturing fluid system can be used under an acidic condition, and the damage of alkaline substances to a stratum is avoided; meanwhile,the fracturing fluid can be applied to CO2 fracturing construction; the acid plant glue fracturing fluid system is suitable for the well temperature of 160 DEG C.

The invention belongs to the technical field of microbial fertilizers, and particularly relates to a water-soluble compound microbial fertilizer and a preparation method thereof. The water-soluble compound microbial fertilizer provided by the invention comprises yeast fermentation waste liquid dry powder, inorganic water-soluble fertilizer and functional bacteria powder in a mass ratio of (68-85):(15-30): (0.3-3.5). According to the water-soluble compound microbial fertilizer provided by the invention, the water-soluble yeast fermentation waste liquid dry powder is used as an organic carrier,so that the defect that the traditional compound microbial fertilizer is not water-soluble is overcome, the application mode of the compound microbial organic fertilizer is expanded, meanwhile, the damage of the traditional organic fertilizer to crops is avoided, and by compounding the water-soluble yeast fermentation waste liquid dry powder with the functional bacterium powder and the inorganicwater-soluble fertilizer according to a certain proportion, the soil fertility can be effectively improved. Experimental results of the embodiment show that the content of the water-insoluble substances in the water-soluble compound microbial fertilizer provided by the invention is 0.08%-0.25%, and the requirement that the content of the water-insoluble substances in a general water-soluble fertilizer standard is less than or equal to 5% is met.

The invention provides a modification method of fenugreek polysaccharide gum. Graded screening is utilized to remove impurities with high water-insoluble substance content in the fenugreek polysaccharide gum sheet; and a physical process is utilized to perform modification (wetting fenugreek polysaccharide gum with a 15% ethanol water solution) and wall-breaking tackifying treatment, thereby greatly enhancing the apparent viscosity of the fenugreek polysaccharide gun and greatly lowering the water-insoluble content in the fenugreek polysaccharide gum.

The invention discloses a production method of a water-soluble ammonium polyphosphate liquid. The method comprises the following steps: taking industrial phosphoric acid, liquid ammonia and gas ammonia as raw materials, preparing a high-temperature molten material through a tubular neutralization polycondensation reaction and a polymerization-kettle further neutralization condensation polymerization, and then carrying out cooling in a water-soluble ammonium polyphosphate water agent preparation tank with a cooling jacket for preparing the ammonium polyphosphate liquid. A water-soluble ammoniumpolyphosphate solid does not need to be prepared firstly, and the water-soluble ammonium polyphosphate water agent can be directly produced on a device. The production process is short, the equipmentinvestment is small, the production operation is simple and convenient, the product quality is good, and the production cost is low.

The invention discloses a special solid water-soluble fertilizer for coptis chinensis and a preparation method thereof. The special solid water-soluble fertilizer for coptis chinensis comprises the following raw materials by weight percentage: 50-65% of water-soluble ammonium polyphosphate, 10-15% of potassium nitrate, 10-15% of ammonium dihydrogen phosphate, 10-15% of dipotassium hydrogen phosphate and 3-10% of urea; the total nutrient content of the fertilizer reaches 76% or more, and the aggregated phosphorus accounts for 65% or more of the total phosphorus. The long-term sustained releaseof water-soluble ammonium polyphosphate is combined with the quick-acting effect of ordinary water-soluble fertilizers such as potassium dihydrogen phosphate, potassium nitrate, ammonium dihydrogen phosphate and urea to provide sufficient nutrients for each growth stage of coptis chinensis; the absorption and utilization rate of fertilizer nutrients is high, the loss of fertilizer nutrients is less, environmental pollution caused by conventional water-soluble fertilizers is lowered, the manual work is saved, the yield is increased, fertilization costs are reduced, and the planting efficiency is improved.

The invention discloses an acrylamide copolymer, a preparation method and an application. The acrylamide copolymer contains a constitutional unit A, a structural unit B, a structural unit C and a structural unit D, wherein, the structural unit A is the structural unit shown in a formula (1), the structural unit B is the structural unit shown in a formula (2), structural unit C is the structural unit shown in a formula (3), and structural unit D is the structural unit shown in a formula (4), and the viscosity average molecular weight of the acrylamide copolymer is 5-15 million. The provided acrylamide copolymer has the advantages of high drag reduction efficiency, high salt tolerance, good high shear-resistance performance, good water solubility, good compatibleness with a clay stabilizing agent and low damage to stratum.

The invention discloses an acrylamide copolymer, a preparation method and an application. The acrylamide copolymer contains a constitutional unit A, a structural unit B, a structural unit C and a structural unit D, wherein, the structural unit A is the structural unit shown in a formula (1), the structural unit B is the structural unit shown in a formula (2), structural unit C is the structural unit shown in a formula (3), and structural unit D is the structural unit shown in a formula (4), and the viscosity average molecular weight of the acrylamide copolymer is 5-15 million. The provided acrylamide copolymer has the advantages of high drag reduction efficiency, high salt tolerance, good high shear-resistance performance, good water solubility, good compatibleness with a clay stabilizing agent and low damage to stratum.