64results about How to "Change the spatial structure" patented technology

The invention discloses a negative oxygen ion photocatalyst decomposition liquid for formaldehyde removal and a preparation method thereof. The liquid is prepared from 14 parts of a formaldehyde trapping agent, 3-5 parts of a nano photocatalyst, 3-5 parts of nano silver ions, 4-6 parts of negative ion powder, 6-10 parts of cellulose, 3-5 parts of ethanol, 0.3-0.7 part of essence and 75.3-80.5 parts of deionized water. The negative oxygen ion photocatalyst decomposition liquid for formaldehyde removal and the preparation method thereof have an excellent catalytic degradation function, can release negative oxygen ions for a long time and can thoroughly kill bacteria and microorganisms since the formaldehyde trapping agent, high-activity nano Ti02 and Ag+ with a high-efficiency sterilizationfunction are added. Harmful gas such as formaldehyde, benzene, VOC and the like brought by the bacteria, the microorganisms and decoration can be thoroughly caught and decomposed, spatial structures of organic molecules are changed and convert into tasteless and harmless molecules, negative oxygen ions are released, sterilization and disinfection are carried out, and therefore indoor air is thoroughly and effectively purified.

The invention discloses a method and device for connecting a metal pipe based on a laser shock wave technology and belongs to the technical field of laser processing. In the invention, a black paint applied to the upper end part of a plugging rod serves as a laser energy absorption layer, and water serves as a restraint layer; a laser pulse beam subjected to parameter optimization enters the interior of a pipe fitting along the axis of the pipe fitting, so as to be irradiated on the absorption layer at the upper end part of the plugging rod through a light guide system; the absorption layer absorbs the energy of the laser so as to be gasified and ionized, thus forming high-voltage plasmas; and the high-voltage plasmas quickly dilate to form a high-amplitude shock wave, thereby promoting the quick dilatational strain of an inner pipe and causing the inner pipe to violently collide with an outer pipe, therefore the parts, which are impacted by the laser shock wave, of the two pipe fittings are plastically deformed obviously; and intensive thermal effect is produced during the collision process so that the interfaces of the collision parts of the two pipes are adhesively jointed together. The method and device provided by the invention are wide in application range, and capable of connecting metal pipe fittings different from each other in melting point, in coefficient of thermal dilation, in thermal treatment condition and in state.

A petrochemical wastewater advanced treatment method includes the following steps: a, discharging secondary treatment effluent of petrochemical wastewater into a sewage pool, ascending the effluent into a coagulation sedimentation tank by a water inlet pump, at the same time, adding a flocculant PAC and a flocculant PAM to the coagulation reaction pool, determining the PAC adding quantity to be 10-30 mg/L and the PAM adding quantity to be 0.2-0.8 mg/L according to water quality conditions of the petrochemical wastewater, after sedimentation, allowing the effluent to enter a primary filter, filtering to remove residual suspended solids, and allowing the effluent after filtration to flow into a middle water pool; b, sending the wastewater in the middle water pool to a catalytic oxidation reactor by a lifting pump with the residence time of 0.5-1.5 h, feeding water and simultaneously adding ozone with the ozone adding quantity of 20-50 mg/L, and carrying out a catalytic oxidation reaction; and c, allowing the effluent of the catalytic oxidation reactor to self-flow through a pipeline mixer, adding the flocculant PAC in the pipeline mixer with the PAC adding quantity of 2-4 mg/L, allowing the wastewater after mixing to enter a secondary filter, carrying out micro-flocculation and filtration treatment, allowing clear water after filtration to enter a clear water pool, and meeting requirements of discharge or reuse.

The invention provides a heavy metal stabilizer and a preparation method and use thereof. The heavy metal stabilizer is prepared through the following steps that (1) small molecule polyamine and carbon disulfide react in an alkaline environment to obtain a dithiocar-bamate solution; (2) soluble iron salt and/or ferrous salt is mixed with the dithiocar-bamate solution obtained in step (1) to obtaina dithiocar-bamate solution modified by the iron salt and/or ferrous salt; (3) the dithiocar-bamate solution modified by the iron salt and/or ferrous salt obtained in step (2) and a crosslinking agent are mixed and react to form the heavy metal stabilizer. Compared with a common dithiocar-bamate polymeric chelating agent, the heavy metal stabilizer has a better removal effect on heavy metal ions,especially Zn<2+>, and has a wider pH application range.

The invention provides a polyamide monofilament, and a production method and an application thereof. A raw material for producing the polyamide monofilament comprises polyamide resin, and the polyamide resin is produced from 1,5-pentamethylenediamine and aliphatic long-carbon chain diacid. The production method of the polyamide monofilament is characterized in that polyamide monofilament is obtained through spinnereting, cooling molding, drawing and winding setting of dried polyamide resin. The raw material for producing the polyamide monofilament contains a monomer with the carbon number being an odd number, so a hydrogen bond proportion formed among molecules of an amido group, the crystal form and molecular chain space arrangement are different from those of conventional polyamide monofilaments produced from a monomer with the carbon number being an odd number; and the polyamide monofilament provided by the invention has a lower initial modulus and a higher bending resilience than the conventional polyamide monofilaments, and can be used to produce super soft filament and prolong the service life of the super soft filaments.

The invention relates to a preparation method of chicken powder containing rich oligopeptides. The preparation method comprises steps as follows: preparation of raw materials comprising, in parts by weight, 55-65 parts of chicken breast, 30-40 parts of chicken skeletons and 1-10 parts of chicken skin; pre-processing; controllable enzymatic hydrolysis; centrifugal filtration; vacuum condensation: filtrate is subjected to vacuum condensation until the concentration of solid matters reaches 35%-55%; spray drying: the filtrate is subjected to spray drying, and the chicken powder containing rich oligopeptides is obtained. The preparation method is simple, operation is convenient, and costs are low; the chicken skeletons and the chicken skin are further utilized, and the application value and the production value are increased; the content of protein in the chicken powder prepared with the method reaches 50%-60%, the content of fat reaches 30%-40%, the water content reaches 1%-3%, the content of peptidyl nitrogen reaches 80%-90%, and the content of the oligopeptides with the molecular weight smaller than or equal to 1,000 Da is higher than or equal to 90%; the chicken powder has a color ranging from pale yellow to pale brown and has a rich flavor of stewed chicken soup, the content of small molecular peptides, especially peptides with the molecular weight smaller than 1,000 Da is increased, accordingly, the chicken powder can be absorbed and utilized by human bodies more easily, and the health level of the human bodies is improved.

The invention relates to a preparation method of a resistance reducing agent for fracture. The preparation method includes the steps of: (1) mixing an acrylamide-series monomer, an anionic monomer containing a double bond, a cationic polymer template, a chelating agent and a molecular weight regulating agent with water with pH value being regulated to obtain a water solution of which the pH value is 6-9; (2) contacting an organic solvent with an emulsification agent to obtain an oil solution; (3) contacting the water solution with the oil solution to obtain a water-in-oil emulsion; and (4) under an inert atmosphere, contacting the water-in-oil emulsion with an initiator in batches, performing a polymerization reaction to obtain a mixture, and contacting the mixture with a phase conversion agent. The emulsification agent is 4-6 in hydrophilic-lipophilic balance value, the molecular weight of the anionic polymer template is less than 1000000, and the structure formula of the anionic polymer template is represented as the formula (I). The invention also relates to the resistance reducing agent for fracture prepared through the method. The resistance reducing agent for fracture is high in resistance reducing rate, is high in inhibition on clay expansion, is good in water solubility and is low in formation damage property.

The invention discloses a preparation method of a soil heavy metal curing detoxicant. The preparation method comprises the following steps: crushing chitin to 50-200 meshes, adding an acidic dissolution agent for dissolution, and then adding a neutralization solution to regulate the pH value to 4.0-6.5; adding an acylating agent to perform acylating reaction for 3-6 hours at 30-85 DEG C under the stirring condition; adding a cross-linking agent to perform crosslinking reaction for 1-3 hours at the temperature 30-50 DEG C under the stirring condition; and after the reaction is ended, drying and crushing to obtain the soil heavy metal curing detoxicant. The soil heavy metal curing detoxicant prepared by the preparation method disclosed by the invention can be used for reducing contents of heavy metals of chromium, lead, arsenic and the like in the soil, reducing the damage of the heavy metals on plants, and reducing the absorption of a plant system in heavy metals.

The invention discloses a novel environment-friendly water-based paint and a preparation method thereof. The paint comprise the following raw materials: a silicate solution, a silicone acrylic emulsion, a coalescing agent, zinc powder, a wetting agent, a dispersing agent, a thickener, a leveling agent, nanometer silicon dioxide and nanometer titanium dioxide. The preparation method comprises the following steps: sequentially adding the silicate solution and the silicone acrylic emulsion into a reaction kettle C, and carrying out uniform mixing under stirring to obtain a silicate-silicone acrylic hybrid emulsion; and then sequentially adding zinc powder, nanometer silicon dioxide, nanometer titanium dioxide, the wetting agent, the dispersing agent, the thickener, the leveling agent and thecoalescing agent into the silicate-silicone acrylic hybrid emulsion and carrying out uniform mixing under stirring so as to obtain the novel environment-friendly water-based paint. The prepared painthas excellent corrosion resistance, flexibility and good comprehensive mechanical properties.

The invention belongs to the technical field of air purification and particularly relates to a bactericidal deodorant and a preparation method thereof. Currently, lots of methods for directly treatingodors and indoor pollution are available and mostly involve essence oriented air fresheners for covering the odors superficially, problems of the odors and pollution are not thoroughly eliminated infact although people have a feeling of odor alleviating, and secondly, activated carbon, plants and the like are adopted according to an adsorption method, but effects are limited. The bactericidal deodorant is prepared from, by weight, 100-150 parts of emulsion, 30-70 parts of a bactericide, 10-30 parts of preservatives, 100-200 parts of a deodorant, 5-10 parts of essences and 540-755 parts of deionized water. Bacteria, microorganisms and harmful gases including formaldehyde, benzenes, VOC and the like resulted from decoration can be captured, adsorbed, sterilized and decomposed thoroughly tochange space structures of odor molecules so as to realize conversion into odorless and harmless molecules.

The invention discloses a membrane concentration process for preparing feed-grade xylo-oligosaccharide through squeezed liquid from viscose production. The membrane concentration process comprises the following specific operation steps: A, filtering squeezed liquid from viscose production through a membrane, taking a concentrated solution and adding acid into the concentrated solution for neutralizing so as to obtain a xylan solution; B, carrying out enzymatic hydrolysis reaction on the xylan solution and compound enzymes so as to obtain an enzymatic hydrolysate and residues of enzymatic hydrolysis, adding water for diluting residues of enzymatic hydrolysis, preheating, carrying out centrifugal separation, taking supernatant namely the xylan solution and obtaining a secondary enzymatic hydrolysate under the effects of compound enzymes; C, mixing the enzymatic hydrolysates obtained in the step B, enabling the mixed solution to enter a nanofiltration membrane for desalting, so as to obtain a concentrated solution which is purification liquid of xylo-oligosaccharide, evaporating and drying so as to obtain the feed-grade xylo-oligosaccharide. The utilization ratio of xylan is high, production waste is reduced and the production cost is reduced.

The invention provides a nano photocatalyst composite material, and belongs to the field of air purifying. The composite material comprises, by weight, 10-18 parts of a formaldehyde collecting agent,5-10 parts of a nano photocatalyst, 5-8 parts of nano silver ions, 5-7 parts of negative oxygen ion powder, 15-20 parts of a deodorant and 40.3-52.1 parts of water. According to the composite material, under the dual-effect compound action of the formaldehyde collecting agent and the nano photocatalyst, organic pollutants of formaldehyde, benzene, toluene and dimethylbenzene can be effectively removed, the organic pollutants can be collected and decomposed through chemical reaction to effectively change the spatial structures of organic molecules, and the organic molecules are converted into harmless molecules without smell; in addition, under the cooperative action of the silver ions and the nano photocatalyst, the nano photocatalyst composite material can effectively sterilize bacteria and microorganisms, and odors can be effectively removed under the action of the deodorant.

The invention discloses a preparation method of beef proteins with high adsorption property to flavor components. The method comprises the following steps: (1) removing impurities from fresh beef, dicing and mincing; (2) degreasing beef samples to obtain crude beef proteins; (3) performing pulse microwave treatment on the extracted crude beef proteins, wherein the output power of the pulse microwaves is 20-500W, the microwave output duty ratio is 5-60%, the pulse width is 10-100ms, the frequency is 2400-2500MHz, the phase is 0-180 degrees, and the pulse microwave treatment time is 5-100seconds; and (4) performing vacuum freeze drying, grinding into powder, and screening, thereby obtaining the beef proteins with high adsorption property to flavor components. According to the beef proteins prepared by the method disclosed by the invention, the adsorption capacity of flavoring compounds can be wholly improved by 20-50%.

The present invention provides wheat protein peptide with blood pressure-lowering activity and a preparation method of the wheat protein peptide. The preparation method comprises the following steps:using electrolyzed water to pretreat wheat gluten meal, preparing a wheat gluten meal mixed suspension, conducting stepwise enzymolysis by using alkaline protease and protease derived from pseudomonasaeruginosa, and conducting filtration, concentration and spray-drying. The method is used to prepare the low-molecular-weight wheat peptide, a protein recovery rate is 65% or more, and the wheat peptide with a molecular weight of less than 1,000 Da accounts for 95% or more. The method is high in conversion rate of a blood pressure-lowering peptide, the in-vitro ACE semi-inhibition concentration is 0.21 mg/mL by in-vitro activity determination, and the wheat protein peptide also has good gastrointestinal digestive stability; and two novel peptides (SAGGYIW and APATPSFW) with high ACE inhibition activity are isolated and identified from the wheat peptide prepared by the method, and the in-vitro ACE half inhibitory concentrations are 2.65 [mu]M and 41.1 [mu]M, respectively.

The invention discloses a method for preparing phenol-rich bio-oil through microwave-assisted catalytic pyrolysis of lignin, and belongs to the field of biomass energy utilization. The preparation method comprises the following steps: mixing lignin with an activated carbon supported bimetallic ion Ni-MoS2/AC catalyst, carrying out microwave-assisted catalytic pyrolysis to obtain lysate, and sequentially carrying out extraction and evaporation on the lysate to remove the extractant, thereby obtaining the phenol-rich bio-oil. The method has the characteristics of high pyrolysis speed, energy efficiency, high efficiency, greenness and environment friendliness. The activated carbon loaded bimetallic ion Ni-MoS2/AC catalyst has the catalytic characteristics of proper hydrodeoxygenation activityand high selectivity, high-content phenol-rich bio-oil can be conveniently obtained, and the catalyst is high in stability, low in production cost and high in economic practicability.

The invention discloses a lignin-based triaminotriethylamine salt waste incineration fly ash heavy metal stabilizer and a preparation method and application thereof, and belongs to the technical fieldof environmental protection technologies and municipal solid waste incineration fly ash treatment. The relative molecular weight of the stabilizer is 3000-20000, and the stabilizer is specifically lignin-based triaminotriethylamine sodium salt or lignin-based triamino triethylamine potassium salt. The method comprises the following steps: firstly, carrying out oxidative degradation on alkaline lignin, exposing a reaction site, carrying out a Mannich reaction on an oxidized aminating agent and the lignin, inoculating amido to the lignin, wherein a condensation reaction increases the molecularweight and enlarges the chelate ring, and introducing C=S double bonds through an esterifying agent to obtain the lignin-based triaminotriethylamine derivative. The method can effectively reduce the leaching concentration of heavy metals such as Pb and Cd in the fly ash, promotes the conversion of the heavy metals into a form with low biotoxicity, is low in energy consumption, high in heavy metalstabilization efficiency and good in volume reduction effect, and is suitable for industrial application of harmless treatment on municipal solid waste incineration fly ash.