43results about How to "Low residue rate" patented technology

An aerogenic composition used for protecting the passengers in coach and airplane is prepared from fuel, oxidant, ignition improver and adhesive. Its preparing process is also disclosed. Its advantages are high air output and high properties.

The timber liquefying method is to mixing timber with solvent in the presence of acid catalyst and under timber liquefying condition, with the timber accounting for not less than 30 wt% of the 1 wt% concentration water solution of NaOH as the extractant. The present invention has mild timber liquefying condition, reduced solvent consumption, greatly reduced liquefied residue rate, environment friendship and other advantages. The timber liquefying product is used for preparing adhesive, foamed polyurethane plastic, molded phenolic plastic and other polymer material.

The invention belongs to petroleum natural gas technology yield increase, and discloses a clean temporary plugging agent. The clean temporary plugging agent is prepared from the following raw materials in parts by mass: 10 to 13 percent of acrylamide, 10 to 13 percent of acrylic acid, 0.3 to 0.5 percent of caustic soda flakes, 0.08 to 0.1 percent of initiators, 7 to 9 percent of low-temperature-resistant glue epoxy resin, 0.5 to 0.8 percent of surfactants and the balance of water. The invention also provides a preparation method of the clean temporary plugging agent. The clean temporary plugging agent has the advantages that the clean temporary plugging agent does not contain inorganic solid phase particles; the damage of the temporary plugging agent to the stratum after the dissolution isreduced; the preparation method of the clean temporary plugging agent is simple and safe; the high-temperature-resistant and salt-resistant capability are realized; great construction pressure can beborne; the high-temperature resistance can be realized; the insoluble residue content is very low; the dissolution speed is controllable; the consumption is low; the use is simple.

The invention discloses a phenol formaldehyde adhesive prepared by using waste preservative timber and a preparation method thereof; the method comprises the following steps: first, liquefaction treatment is carried out on preservative timber treated by preservative and phenol under the action of catalyst and polymerization inhibitor to obtain preservative timber liquefaction product; then, polymerization reaction is carried out on the preservative timber liquefaction product and formaldehyde in alkaline solution to obtain the phenol formaldehyde adhesive. Compared with the phenol formaldehyde adhesive synthesized by adopting a conventional method, the phenol formaldehyde adhesive prepared by the invention has higher activity, and can meet the quality index prescribed by the national plywood standard that corresponding strength is greater than 0.7MPa in terms of bond strength. The phenol formaldehyde adhesive is produced by taking waste preservative timber as raw material, thus not only saving phenol deriving from petrochemistry resource and reducing toxicity, but also reducing the pollution of the waste preservative timber on the natural environment and lowering the cost of production.

The invention relates to the drilling field of petroleum industry, in particular to a drilling fluid additive composition suitable for coal-bed gas wells and its application, a water-based drilling fluid and its application. The drilling fluid additive composition contains a tackifying and shear strength improving agent, a coating agent and a filtrate reducer, wherein the tackifying and shear strength improving agent is a copolymer containing a structural unit shown as formula (1), a structural unit shown as formula (2) and a structural unit shown as formula (3), the coating agent is a combtype polysaccharide compound, and the filtrate reducer is nanocrystalline cellulose. Through cooperation of the tackifying and shear strength improving agent, the coating agent and the filtrate reducer, the composition provided by the invention can be used as an additive in a solid-free brine drilling fluid so as to endow the brine drilling fluid with the advantage of high penetration rate and low residue rate. (formula (1), formula (2), formula (3)).

The invention provides a rapid liquefying method for wood. The method comprises steps of: uniformly mixing wood, an acid catalyst and a liquefying agent, and heating to a temperature between 100 DEG C and 180 DEG C to proceed a wood liquefying reaction, and is characterized in that the liquefying agent comprises phenol having water and carbon atoms 6-15 in number. The heating is performed by microwave, and the wood liquefying reaction is performed in a closed reactor. According to the rapid liquefying method for the wood provided by the invention, not only the liquefaction of the wood can be rapidly realized, but also the residue rate of the wood liquefying reaction is very low.

A polymer fracturing liquid is composed of PAM 0.1-0.4%, chrome acetate 0.05-0.4%, acetic acid 0-1.0%, formate 0.3-3.0%, ClO20.1-3.0%, polyoxyethylene alxylphenol other 0-0.5%, KCl2 0-2.0%, NaOH0.9-10.0%, ammonium persulfate 0.2-10.0% and balanced with water. The process includes: first preparing the base liquid, then preparing the cross linkage liquid, and last preparing the fracturing liquid. The production cost little and the process is simple. It can be used for the hypotonic and the hyperosmotic oil phase. The residue ratio is little than 50mg/L-10mg/L.

The invention discloses a technological method for using a leather product industrial waste as a fuel. The method comprises the following steps of: a. throwing the leather product industrial waste and coal in a proportion of between 1 to 1 and 1 to 3 into a pre-combustion area of an industrial boiler for mixing to form a mixed fuel; b, incinerating the mixed fuel in the industrial boiler by using the third-order 'thermal decomposition type' incinerating process; c, recovering and converting the heat generated after the incinerating by a heat recovery device; and d, changing chromium salt generated after the incinerating into water-soluble chromate by an alkaline roasting method, and carrying out recovery by water leaching. The technological method not only can provide combustion heat and recover a toxic chromium element, but also can effectively reduce the content of harmful gases, such as SOx, NOx and the like generated during burning the fuel.

The invention provides a water-swellable rubber flexible temporary plugging particle. The water-swellable rubber flexible temporary plugging particle is prepared by the following method: dissolving acrylamide, bentonite and a functional monomer in water; adding the solution into natural latex, and curing at 45-50 DEG C for 2 hours; adding an initiator and a cross-linking agent, and carrying out a sealed reaction at 45-50 DEG C for 4-5 h to form gel; and drying the reacted product, and crushing to obtain the product. The addition amount of substances is as follows in percentage by mass: 10-15% of acrylamide; 2.5- 5% of bentonite; based on the mass of dry glue, 9.6-12.6% of natural latex; a functional monomer accounting for 10% of the mass sum of the dry glue of the natural latex and the acrylamide; a cross-linking agent accounting for 0.28-0.33% of the mass sum of the dry glue of the natural latex and theacrylamide; an initiator accounting for 0.22-0.39% of the mass sum of the dry glue of the natural latex and the acrylamide; 28-32% of total solid content, and the balance of water. The particle size of the water-swelling rubber flexible temporary plugging particle is controllable and can be adjusted according to the entering depth requirement; the residue rate after degradation is lower than 3%, and flowback is easy; and the particle has a certain temperature resistance and salt resistance.

The invention discloses a method for preparing polyether polyol by ultrasound-assisted liquefaction of waste water bamboo fibers. The method comprises the following steps: putting water bamboo leaf powder into a mixed liquefaction solvent of polyethylene glycol 400 and glycerol, wherein the liquid-solid ratio is (8-12):1, the volume ratio of the polyethylene glycol 400 to the glycerol is (4-8):1;then adding 1-2% of a catalyst; carrying out an ultrasonic reaction for 5-10 minutes by using an ultrasonic device; controlling the temperature to be 100-120 DEG C after the ultrasonic treatment is completed; and carrying out stirring to carry out a reaction for 20-40 minutes. According to the method disclosed by the invention, the liquefaction time can be greatly reduced, meanwhile, the use amount of a catalyst and the solid residue rate in a reaction liquid are reduced, and the hydroxyl value of the reaction liquid is increased.

The invention discloses a special bud-protecting fertilizer for water-fertilizer integrated planting of day lily and a preparation method of the special bud-protecting fertilizer, and relates to the technical field of formula fertilization. The special bud-protecting fertilizer for water-fertilizer integrated planting of day lily comprises the following raw materials, by weight: 30-50 parts of urea, 30-50 parts of calcium superphosphate, 20-30 parts of monopotassium phosphate, 15-25 parts of vitamin, 3-10 parts of oligosaccharins and 8-15 parts of humic acid. The special fertilizer is specially developed according to the special fertility requirement of the day lily in the full-bloom stage, the pertinence is high, and compared with non-pertinence commercially available fertilizers, the useamount of the fertilizer is greatly reduced, and the fertilizer cost is saved; the fertilizer is a water-soluble nutrient component, is quick to dissolve and supply nutrients, does not contain any auxiliary component, and does not block a drip irrigation pipeline; the method is simple in processing and preparation process, low in energy consumption, easy to operate, flexible in production, convenient to apply and easy to popularize and apply in large area in water-saving day lily cultivation.

The invention relates to a Lycium barbarum/gastrodia elata/towel gourd tea. Lycium barbarum, gastrodia elata and towel gourd are used as main materials; and plantain, corn silk, Herba Lysimachiae, giant knotweed, club moss, sargentgloryvine, lotus leaf, oriental wormwood and notopterygium root are used as auxiliary materials. The preparation method comprises the following steps: cleaning the main materials and auxiliary materials; drying the main materials, and pulverizing to obtain a main material pulverized substance; decocting the auxiliary materials, carrying out microwave extraction on the auxiliary material decoction solution, and concentrating the obtained auxiliary material extracting solution to obtain a concentrated solution; and carrying out vacuum freeze drying on the concentrated solution, pulverizing to obtain ultrafine powder, mixing the ultrafine powder with the main material pulverized substance, sterilizing, and packaging into bags, thereby obtaining the finished product. The Lycium barbarum/gastrodia elata/towel gourd tea and preparation method thereof solve the problems of fewer varieties of health tea, poor health-care effect and poor mouthfeel in the prior art. The Lycium barbarum/gastrodia elata/towel gourd tea is prepared from multiple selected traditional Chinese medicines according to the experiences of concentrate on studies of the inventor on the basis of the patrimonial secret prescription, and has the favorable effects of relieving pain, promoting urination, expelling uric acid and preventing gout.

American ginseng, salvia miltiorrhiza and Chinese angelica tea is prepared by taking American ginseng, salvia miltiorrhiza and Chinese angelica as main materials, taking bastard speedwell, pipewort, herba rabdosiae, semen persicae, phoenix dactylifera, heterophyllous wing seedtree roots and carthamus tinctorius as auxiliary materials, cleaning and decocting the main materials and the auxiliary materials respectively, performing microwave extraction after decoction, obtaining a main material extract and an auxiliary material extract for mixing and concentration after extraction, performing vacuum freeze drying on an obtained concentrated solution, grinding into ultra-fine powder and performing bagging after sterilization. The tea solves the problems that types of health protection tea is few, a health protection effect is not good enough and the taste is bad in the prior art; the tea is processed and prepared elaborately by the inventor from various selected traditional Chinese medicines based on the patrimonial secret recipe and according to the concentrated traditional Chinese medicine research experience for many years. The tea has good effects of promoting blood circulation to remove blood stasis and promoting heart blood circulation.

The preparation method comprises the following steps: by using burdock and spina date seed as the main materials and lily root, Bridelia tomentosa, Rhodobryum roseum, Viola arcuata, asiatic bilberry leaf, nostoc and Cleome gynandra as auxiliary materials, cleaning the main materials and auxiliary materials, respectively carrying out decoction and microwave extraction, mixing the main material extracting solution and auxiliary material extracting solution, concentrating, carrying out vacuum freeze drying on the obtained concentrated solution, pulverizing to obtain ultrafine powder, sterilizing, and packaging into bags, thereby obtaining the finished product. The burdock/spina date seed tea and preparation method thereof solve the problems of high price and low technical content in the health-care tea in the prior art. The burdock/spina date seed tea is prepared from multiple selected traditional Chinese medicines according to the experiences of concentrate on studies of the inventor on the basis of the patrimonial secret prescription, and has the favorable effects of nourishing the body and relieving mental stress.

The application relates to the technical field of food processing, in particular to a tunnel baking machine. The tunnel baking machine comprises a tunnel furnace and a conveyor belt and conveying rollers which are installed in the tunnel furnace. A discharge mechanism is arranged at a discharge port of the conveyor belt, and baked food can be scraped and discharged from the outer surface of the conveyor belt in advance by operation of the conveyor belt, so that discharge operation of the baked food can be facilitated, and the residue rate left on the outer surface of the conveyor belt can be reduced. A cleaning mechanism located below the discharge port can be used for cleaning residues on the outer surface of the conveyor belt, cleanliness of the conveyor belt is improved, and further, the impact of the residues on the conveyor belt on food baking when the conveyor belt is reused is reduced.

The invention relates to an energy-saving and environment-friendly biogel fracturing fluid which comprises the following components: a biological thickening agent containing one or combination of carrageenan, pectin, gelatin and flaxseed gum, a biological gel breaker containing metalloproteinase, and a water quality conditioning agent containing a hydrophobic group that can be easily bound to thehydrophobic group of the thickening agent. The biogel fracturing fluid disclosed by the invention has the technical effects that after the biogel fracturing fluid is continuously sheared for 1-6 hoursor more under the conditions that the temperature is 80 DEG C and the shearing rate is 170s <-1>, the viscosity of a fracturing fluid system can also be kept at more than 180MPa. S, the outstanding sand carrying capacity is realized at the temperature of 80 to 100 DEG C, friction resistance is low, the residue rate is low, and environmental friendliness is achieved.