55results about How to "Strong bridging ability" patented technology

The invention relates to an oilfield sewage treatment method. 8-10 mg/L of an oilfield sewage treatment agent is added to oilfield sewage with the oil content ranging from 900 mg/L to 1200 mg/L, and the mixture is stirred for 20-40 min and then is left to stand for separation; the oilfield sewage treatment agent comprises components in parts by mass as follows: 15-25 parts of a demulsifier, 10-20 parts of a flocculating agent, 20-25 parts of a corrosion inhibitor, 5-10 parts of a surfactant and 5-8 parts of a bactericide. With the adoption of the method, effects of demulsification, flocculation, bridging, foaming, corrosion and scale inhibition and sterilization can be realized simultaneously, the usage amount of the oilfield sewage treatment agent is small, the oil removal rate is high, the corrosion and scale inhibition effect is obvious, and the method is particularly applicable to treatment of high-concentration oilfield sewage.

The invention discloses a sulfonated aromatic diamine compound as well as a preparation method and application thereof. The sulfonated aromatic diamine compound is as shown in the formula I in the specification. The preparation method of the sulfonated aromatic diamine compound as shown in the formula I comprises the following steps: (1) in the presence of acid, reacting a phenylamine compound as shown in a formula II with a benzaldehyde compound as shown in a formula III in water, after the reaction is accomplished, neutralizing the reaction system by using alkali, and recrystallizing to obtain an aromatic diamine compound as shown in a formula IV; (2) under an ice-bath condition, adding the aromatic diamine compound as shown in the formula IV into concentrated sulfuric acid, and subsequently adding fuming sulfuric acid for reaction so as to obtain the sulfonated aromatic diamine compound as shown in the formula I. As a key initiating agent or functional monomer of a novel efficient demulsifying agent or water clarifier, the sulfonated aromatic diamine compound disclosed by the invention has important values in treating polymer flooding produced liquids.

The invention discloses a thin-wall component recombining and restoring method based on pulse welding and laser augmented material restoring. The method is characterized in that firstly, the distribution and trend of cracks and other penetrating damage are determined through a coloring check method; secondly, grinding treatment is conducted through a hard alloy rotary file, and a penetrating groove in a relatively regular shape is formed; thirdly, optimal grinding of a pulse welding groove is conducted; fourthly, cleaning of the penetrating groove and a groove body of the penetrating groove is conducted; fifthly, pulse welding bridging restoring of the penetrating groove is conducted; sixthly, a bridging welding restored body is ground and cleaned; and seventhly, laser augmented material restoring is conducted on a damaged structure. The method has the following advantages that the pulse welding restoring bridging capability is high, a base plate does not need to be additionally designed or manufactured, the restoring technology process of a penetrating damage component can be simplified, and the restoring efficiency is improved. A pulse welding restoring control system outputs data stably and accurately, heat input in the restoring process can be accurately controlled, the deformation of the restored workpiece can be reduced, and the restoring precision is high. Three-dimensional forming restoring of the damaged component can be automatically achieved through laser deposition restoring, the restoring efficiency is improved, and the stability and consistency of the restoring technology are good.

The present invention relates to an industrial oily wastewater treatment method. The method comprises: adding an oily wastewater treatment agent to wastewater in which the oil content is 700-1200 mg/L, wherein the added volume is 10 mg/L; and after stirring the mixture for 20-40 minutes, performing separation by standing, wherein the oily wastewater treatment agent consists of a demulsifier, a flocculant and a surfactant and a solvent; and components in parts by mass are: 25-35 parts of the demulsifier, 5-10 parts of the flocculant, 5-10 parts of the surfactant, and 50-80 parts of the solvent. The oily wastewater treatment agent can simultaneously have effects of demulsification, flocculation, bridging and bubbling. According to the treatment method of the present invention, the composite oily wastewater treatment agent has high efficiency in removing oil with small dosage, and is particularly applicable to treatment of wastewater that contains high concentration of oil.

The invention discloses a preparation method of a nano-Fe(OH)3-containing acrylamide-grafted copolymer flocculant. The method is characterized in that 100 mL of a 100 g/L FeCl3 ethylene glycol solution is added to a three-neck reaction flask, 90-300 ml of a 40 g/L NaOH ethylene glycol solution is slowly added in the stirring state, the mixture reacts at the reaction temperature of 120-160 DEG C for 2-4 h in the rapid stirring state and then the product after reaction is cooled to the room temperature, reaction products are centrifugally separated and washed with deionized water, and nano-Fe(OH)3 is prepared; 20 parts of acrylamide are added to the three-neck reaction flask, then 150-600 parts of deionized water and 1.0-12 parts of trimethyl hexadecyl ammonium chloride are added, the mixture is stirred, 0.5-8 parts of the nano-Fe(OH)3 are added in the stirring state, 8-40 parts of cationic monomers and 0.8-10 parts of macromonomers are added, the mixture is stirred for 30 min, the pH value is 5-8, N2 is introduced for 30 min, 0.02-0.6 parts of an initiator, namely, potassium persulfate, is added at the temperature of 50-75 DEG C, the mixture reacts for 8-24 h, and the nano-Fe(OH)3-containing acrylamide-grafted copolymer flocculant Fe(OH)3-PAMB with excellent coagulation performance is prepared.

The invention belongs to the fields of environmental protection and resource utilization of solid waste papermaking sludge, and particularly relates to a method of preparing a sludge dehydrating conditioner by taking papermaking sludge as a main raw material and compounding the papermaking sludge with poly(aluminum chloride) and polyacrylamide. The method comprises the following steps: dissolving lignin in the papermaking sludge by using water and a sodium hydroxide liquid; acidifying the filtrate by a sulfuric acid solution, filtering and drying precipitates to obtain the lignin; and uniformly mixing the lignin with the poly(aluminum chloride) and polyacrylamide in a weight part ratio of (8-16) to (0.8-2.4) to (0.02-0.04) to obtain the composite sludge dehydrating conditioner. The composite sludge dehydrating conditioner takes the papermaking sludge as the main raw material, the whole preparation process is simple, and the raw material is solid waste, so that not only is a pollution problem of the papermaking sludge on the environment solved, but also the specific resistance of the sludge can be obviously reduced and the moisture content of the sludge can be lowered by virtue of the conditioner, and therefore, a purpose of recycling the papermaking sludge to treat waste with waste is realized.

The invention discloses high-speed tool steel for the sintering procedure of metal injection molding. The high-speed tool steel comprises a first powder body and a second powder body. The first powder body is the mother alloy phase metal powder body, and the second powder body is the ultrafine metal powder body or the nanometer metal powder body. According to the high-speed tool steel for the sintering procedure of metal injection molding, by adding the ultrafine metal powder body or the nanometer metal powder body of the proper proportion, the sintering temperature of the high-speed tool steel material is lowered, the problem of the narrow sintering window of the high-speed tool steel is solved, the product density is increased, and mechanical performance is improved; and the irregular metal powder bodies of the proper proportions play a bridging role among the components, so that deformation in the sintering process is avoided.

The invention provides a light high-strength ABS wood-plastic foamed board and a preparation method thereof. The wood-plastic foamed board is prepared from the following components in parts by weight:20-30 parts of ABS resin particles, 10-20 parts of maleic anhydride grafted ABS resin particles, 40-60 parts of wood flour, 5-10 parts of coated flame-retardant polypropylene fibers, 5-7 parts of modifier and 2-5 parts of foaming agent and 0-6 parts of a filler. Reasonable raw material selection and self-made pretreatment of part of raw materials are carried out, the reaction combination effect between the materials is effectively improved and the performance effect is higher; and the ABS is adopted as a board substrate, the comprehensive quality is good, the applicability is high, the prepared board is light, high in strength and excellent in corrosion resistance, mildew resistance, acid and alkali resistance, water resistance, heat preservation, flame retardance and the like, the mechanical property is remarkably improved, and the popularization and application value is high.

The invention relates to a preparation method of a copper plating brightening agent, and belongs to the technical field of additives for copper plating. Firstly, sodium hydroxide is used for activating chitosan to improve the activity, and is mixed with sorbitol and anacardol; through use of the mixture and through mixing, the chitosan and epoxy chloropropane are cross-linked to improve the bridging capacity; meanwhile, the anacardol is used as raw materials, and is combined with the modified chitosan; then, sulfamic acid is used to form an anacardol type anionic active agent under the catalyst effect; and meanwhile, acrylamide is polymerized to form polymerized acrylamide, which is combined on biomass negative ions. Products are used for absorbing copper ions in use; under the effect of the modified chitosan, the growth of crystal nucleuses is accelerated; and dodecylbenzene sulfonic acid is used for improving the dispersivity, so that the growth speed of grains is lower than the growth speed of the crystal nucleuses, the crystal refining is improved, and the brightening effect is improved.

The invention discloses a bridge plugging synergist for drilling fluid. The bridge plugging synergist comprises the following components in percentage by mass: 20-40% of wood fibers, 35-40% of inorganic mineral fibers, 20-30% of inorganic rigid particles and 5-10% of an inorganic reinforcing agent. The inorganic rigid particles are resin sand with the particle size of 200 meshes or a compound of the resin sand and ceramic powder; the inorganic mineral fiber is a combination of brucite fibers, aluminum silicate fibers and carbon fibers, wherein the brucite fibers are 1-3 mm in length and 0.5-16[mu] m in diameter, the aluminum silicate fibers are 2-4 mm in length and 0.7-20 [mu] m in diameter, and the carbon fibers are 1-4 mm in length and 0.5-18 [mu] m in diameter; wherein the mass ratio of the brucite fibers to the aluminum silicate fibers to the carbon fibers is 5: 4: 1. According to the bridge plugging synergist disclosed by the invention, through the cooperative use of the microfibers and the microparticles, microcracks can be effectively plugged, and the compactness of a bridge plug is improved, so that the pressure bearing capacity is enhanced.

A clarifying agent for depositing proten, starch and other impurities is prepared from aluminium sulfate, alum, calcium carbonate, caroxymethyl cellulose sodium, sodium hydrogen sulfite and VC.

The invention discloses a catalyst for alkaline hydrolysis of pyraclostrobin production wastewater, a preparation method of the catalyst and a pretreatment method of the pyraclostrobin production wastewater. The catalyst is obtained by curing modified biomass charcoal, an iron-based metal catalyst and sodium alginate which serve as raw materials under the crosslinking action of a crosslinking agent. The catalyst is used for pretreating pyraclostrobin production wastewater. The catalyst disclosed by the invention has the advantages of low cost, large specific surface area, large number of active sites, good dispersity, good stability, good catalytic performance and the like; the problems of poor activity, poor dispersion effect and the like in the existing iron-based metal catalyst are solved; the disclosed catalyst can achieve favorable treatment effect and enhance the biodegradability of the wastewater when being used for treating pyraclostrobin production wastewater, and has the advantages of high use value and favorable application prospects. The preparation method of the catalyst has the advantages of simple preparation process, mild preparation conditions, low cost, no secondary pollution and the like, is suitable for large-scale preparation, and is beneficial to industrial application.