72results about How to "Wide temperature" patented technology

The invention relates to a high-efficiency phase change energy storage microcapsule with a thermochromic function, and a preparation method thereof. The core of the microcapsule is a high-grade aliphatic hydrocarbon, alcohol, acid or lipid organic phase change material, and the wall of the microcapsule is a polymer formed by surface modified thermochromic powder and an organic polymer monomer. The preparation method of the microcapsule comprises the following steps: carrying out surface modifying treatment on the thermochromic powder with a coupling agent; mixing the surface modified thermochromic powder, the organic phase change material and the organic polymer monomer as an oil phase, and adopting an aqueous solution of a surfactant as a water phase; and adding the oil phase to the aqueous phase, and carrying out high speed emulsification and polymerization to form the high-efficiency phase change energy storage microcapsule with a thermochromic function. The preparation method has the advantages of simple preparation process, and easy control of the reaction process; and the material has the advantages of wide thermochromic temperature range, abundant color, high heat storage ability and long recycling life, and is hopeful to be applied in the fields of chromogenic indication, coatings and building materials.

A shape-memory epoxy-resin system consists of epoxy-resin and curing agent in proportion of 100:13.55-22.75; epoxy-resin is bisphenol A epoxy resin or bisphenol A epoxy and fatty epoxy blend resin, curing agent is p-p'-diamino-diphenyl-methane. It's light, efficient and non-toxic, and has less folding and packing volume, long storage period. It can be used for ultra-large spatial structure materials.

The invention discloses new klebsiella pneumoniae phage vB_KpnM_Bp5. The klebsiella pneumoniae phage (klebsiella pneumoniae phage) phage ) vB_KpnM_Bp5 is preserved in the China Center for Type CultureCollection (CCTCC) on June 13, 2019, and the preservation number is CCTCC NO:M 2019452. The phage has better disinfecting and sterilizing effects on host multidrug resistant klebsiella pneumoniae separated from piggery sewage, also has good disinfecting and sterilizing effects on other two multidrug resistant klebsiella pneumoniae separated from hospitals, is wide in antimicrobial spectrum, and can be applied to preparation of medicines for preventing and treating multidrug resistant klebsiella pneumoniae.

The invention discloses a cylindrical air medium high-temperature thermostatic bath which comprises a shell, an insulating layer, an inner tank, an insulation cover plate, a temperature sensor, a heater, a motor and a temperature controller; the key points of the thermostatic bath lie in that: the internally lower part of the shell is provided with the motor and the temperature sensor; the upper middle part of the shell is provided with the inner tank; an output shaft of the motor runs through the insulating layer and the bottom of the inner tank, and is fixedly connected with a centrifugal fan blade at the bottom of the inner tank; the middle of the inner tank is fixedly provided with a porous uniform-temperature cylinder; a cylindrical air deflector and the heater are arranged between the inner tank and the porous uniform-temperature cylinder; the working medium of the inner tank is an air medium; the temperature sensor is arranged between the porous uniform-temperature cylinder and the cylindrical air deflector; the insulation cover plate covers an upper opening of the inner tank and is provided with small through holes used for inserting a standard thermometer and a thermometer to be detected. The bath successfully realizes the high-temperature thermostatic bath taking the air medium as the working medium and has the advantages of safety, environmental protection, multiple purposes, being economical and wide working temperature range.

The invention relates to the technical field of heat-conducting components, in particular to a heat pipe with efficient heat-conducting effect and a heat-conducting medium thereof. The hot pipe comprises a metal pipe and the heat-conducting medium packaged in the metal pipe; and the heat-conducting medium is made from the following raw materials: 1,000g of deionized water, and 40-60g of potassium dichromate, 3-5g of boric acid, 8-12g of sodium perborate, 2-4g of sodium peroxide, 1-3g of calcium chloride, 6-10g of ethanol, 0.5-1g of manganese dioxide and 0.2-0.8g of zinc hydroxide, which are added into 1,000g of deionized water. By the technical scheme, a plurality of materials are cooperated with one another, and heat-conducting efficiency of a product is improved. By the heat pipe made from the heat-conducting medium, the heat-conducting efficiency is improved by 200-300% compared with that of the heat-conducting medium of an ordinary heat pipe, and the applicable temperature range of the heat pipe is wide.

The invention pertains to a catalyst and application technology field thereof, which relates to a framework modification acid-alkali difunctional ZSM-5 zeolite catalyst and a preparation method and applications thereof. H-ZSM-5 zeolite is adopted by the catalyst as substrate material, and the substrate material is heated and hybrid reacted with nitrogenous modified raw material solvent and steam, then the catalyst is prepared. Part framework oxygen atom of the ZSM-5 zeolite of the catalyst is replaced by amine (nitrogen) group, thus the catalyst has acid-alkali difunctional catalyst property; the catalyst has the advantages of high crystallinity, open pore canal, comparatively larger specific surface, good molecular disperse property, high strength and excellent wearing resistance. Reclaiming process of the catalyst is convenient, and the reclaimed catalytic performance recovers well. The catalyst shows excellent catalytic activity, selectivity and stability in catalytic reactions of MTO, MTP, ETE and other alcohols dehydration to alkenes. The preparation method of acid-alkali difunctional ZSM-5 zeolite catalyst is simple, preparation cost is comparatively low and industrialized potential application range is wide.

The invention discloses a xanthine dehydrogenase, its coding gene and application. The present invention discloses a protein, which is composed of the protein shown in (1) and/or the protein shown in (2): (1) the protein shown in SEQ ID No.4 or the protein shown in SEQ ID No.4 The amino acid sequence shown has undergone substitution and/or deletion and/or addition of one or several amino acid residues and a protein with the same function; (2) the protein shown in SEQ ID No.5 or the protein shown in SEQ ID No.5 A protein whose amino acid sequence has undergone substitution and/or deletion and/or addition of one or several amino acid residues and has the same function. The xanthine dehydrogenase disclosed by the invention is beneficial to the further development of new application fields in combination with other enzymes, and is especially suitable for the needs of commercial applications such as sample detection and industrial application.

A thermal shock system and a thermal shock machine provided with the system are provided and overcome the problem that temperature rising and lowering are slow and energy consumption is high in present thermal shock systems. According to a technical scheme, the thermal shock system includes a gas feeding system a compressed air pipeline of which is fed with compressed air having pressure of 70-130 psi; a cooling system connected to the gas feeding system and outputting cooling gas the temperature of which is -80 DEG C or above; a heating system into which the cooling gas is fed and which outputs impact gas having a temperature of -80 DEG C to 225 DEG C; an air processing system communicated with the compressed air pipeline of the gas feeding system so as to purify the compressed air; and a control system used for controlling start and stop of the cooling system and/or the heating system to allow the temperature of gas ejected to be a temperature preset value input by a user, thus achieving rapid temperature lowering and temperature rising, avoiding pre-heating and pre-cooling and avoiding liquid nitrogen assistance. The thermal shock system also has an advantage of greatly reduced energy consumption, thus reducing the cost.

The invention discloses a petroleum aromatic hydrocarbon degrading bacterium (G-40), which is named as brevibacillus laterosporus G-40 and belongs to brevibacillus. The strain has been saved in ChinaCenter for Type Culture Collection (CCTCC), Wuhan university, China in June 30, 2017. The preservation number is CCTCC No. M2017400. The strain is screened from petroleum polluted soil in the oil producing region of Guanghua oil field in Qianjiang city. The strain (G-40) has an ellipsoidal shape. The result of gram staining is positive. The strain (G-40) can degrade 53.02% of petroleum aromatic hydrocarbons after the strain is cultured for 30 days under following conditions: temperature: 35 DEG C; pH value: 7.3; oil concentration: 0.6%; salt concentration: 0.5%; inoculation amount: 10%; nitrogen source: (NH4)2SO4; and phosphor source: Na2HPO4. The strain (G-40) can adapt with wide ranges of temperature, pH value, and salinity, and has a good prospect and economic value in fields such as petroleum pollutant elimination, biological restoration of petroleum aromatic hydrocarbon polluted soil and water, and the like.

A liquid crystal compound having general physical properties necessary for a liquid crystal compound, a high stability to heat, light or the like, a small viscosity, a suitable refractive index anisotropy, a suitable dielectric anisotropy and steep electro-optic characteristics, a wide temperature range of a nematic phase and an excellent compatibility with other liquid crystal compounds, and a liquid crystal compound especially having a wide temperature range of a nematic phase. A compound represented by formula (1).

with, for example, R¹ and R² are alkyl having 1 to 10 carbons; A¹ is 1,4-cyclohexylene; A² is 2,3-difluoro-1,4-phenylene; X is fluorine or chlorine; Z¹ and Z² are a single bond; and p and q is 0 or 1.

The invention discloses an Sr2FeTaO6/alumina composite catalyst for denitrification of flue gas and a preparation method thereof. The catalyst is mainly prepared by preparing strontium carbonate, tantalum pentoxide and iron particles, serving as raw materials, into Sr2FeTaO6 powder, then coating the Sr2FeTaO6 powder on surface of a carrier alumina pellet. The Sr2FeTaO6/alumina composite catalyst for the denitrification of the flue gas prepared by the invention is an environment-friendly iron-containing SCR catalyst with a novel material and structure, and has the advantages of wide reaction window temperature, high catalytic activity and no pollution; the catalyst can be denitrified at a low temperature, and NOx conversion rate of NO and the like is high. At the same time, the preparationmethod of the Sr2FeTaO6/alumina composite catalyst for the denitrification of the flue gas has the advantages of simple process, low cost, wide raw materials, easy control of a preparation process, high yield and the like.

The invention discloses a novel bi-metal active carbon-based desulfurization catalyst. The novel bi-metal active carbon-based desulfurization catalyst is obtained with active carbon pretreated with nitric acid with a mass fraction of 40% as the carrier, Ni with a mass fraction of 1% as the basic active component, and Ce with a mass fraction of 1-9% as the second active component; an active component precursor is loaded onto the active carbon with the impregnation method, and then the novel bi-metal active carbon-based desulfurization catalyst is obtained through heat treatment. Calcination temperature is 500-900 DEG C, and high-purity nitrogen serves as protective gas in the calcination process. The novel bi-metal active carbon-based desulfurization catalyst has the advantages of being high in SO2 removal capacity, high in working sulfur capacity, wide in applicable smoke temperature range, adaptable to a large SO2 concentration range, high in space velocity and the like, and working sulfur capacity reaches 37-97 mgSO2/g when reaction space velocity is 3000h<-1>, bed temperature is 110 DEG C, SO2 inlet concentration is about 2200 ppm, O2 content is 10%, and vapor content is 10.4%.

The invention provides a temperature-resisting and salt-resisting self-adhesion emulsion temporary blocking acidification diverting agent. The temperature-resisting and salt-resisting self-adhesion emulsion temporary blocking acidification diverting agent is prepared from diesel oil which accounts for 20 to 40 percent of the two-phase total mass percent, de-ionized water which accounts for 50 to 70 percent of the two-phase total mass percent, oleic diethanolamide which accounts for 1 to 5 percent of the two-phase mass percent, polyisobutylene succinimide which accounts for 0.2 to 1 percent ofthe two-phase mass percent and sodium dodecylbenzene sulfonate which accounts for 0.1 to 0.5 percent of the two-phase mass percent. The emulsion temporary blocking acidification diverting agent is formed by dissolving the oleic diethanolamide and the polyisobutylene succinimide into the diesel oil, dropwise adding the de-ionized water dissolved with the sodium dodecylbenzene sulfonate into activeoil and stirring at a speed of 2000 r/min. The emulsion temporary blocking acidification diverting agent can be applied to diverting acidification of carbonate rock reservoirs with the formation temperature of 200 DEG C and the formation water salinity of 20*10<4> mg/L.

The invention discloses a Fe2O3/Sr2FeTaO6-x photocatalyst, a preparation method and application thereof. The preparation method includes the steps of: dissolving oleic acid in anhydrous ethanol, adding sodium oleate, then adding tantalum pentachloride, an organic ferric salt and an organic strontium salt, performing stirring, then carrying out hydrothermal reaction, and then conducting flushing and drying to obtain Sr2FeTaO6 powder; mixing the Sr2FeTaO6 powder with calcium hydride, and conducting calcination to obtain dark red Sr2FeTaO6-x; preparing a ferric salt ethanol water solution, addingSr2FeTaO6-x, stirring the substances violently, carrying out hydrothermal reaction, then performing natural cooling, and conducting washing and drying to obtain the Fe2O3/Sr2FeTaO6-x photocatalyst. The invention provides a brand-new preparation method of the photocatalyst on the basis of a hydrothermal-calcium hydride modification method, the Fe2O3/Sr2FeTaO6-x composite semiconductor system withhigh interfacial force can be finally synthesized, and photocatalytic degradation of nitric oxide is greatly improved.

A kind of ferrite used as a three-way catalyst for treatment of exhaust gas from vehicle engines is revealed. Mono-nitrogen oxides (NO_X), carbon monoxide (CO) and hydrocarbons (HC) in exhaust gas from vehicle engines can be removed effectively by the three-way catalyst made from ferrite containing at least one substitutional metal.

The invention relates to rapid low-temperature black nickel water for nickel plating and copper plating post-processing. The black nickel water contains components such as zinc salt, nickel salt, thiocyanate, conductive salt, water and the like. The black nickel water is characterized in that the operating temperature is 25-50 DEG C; the operating time is 1-5 min; and pH value is 4.5-5.5. The black nickel water is prepared according to the following steps of: adding 50-70% of water in the raw materials into a stirring device; successively pouring other components; finally adding the rest of the water; and stirring for at least 5 minutes to obtain the finished product. The black nickel water produced in the invention is clear, has stable performance and wide range of temperature and current density, is convenient to operate, and has long service life. As the product can be used at the temperature of 30-40 DEG C, electric energy consumed during heating process is greatly saved; in addition, the heating time is short, thus saving time.

The invention discloses a Sr2FeTaO6 photocatalytic material as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) dissolving oleic acid into absolute ethyl alcohol, further adding sodium oleate, and performing sufficient stirring; (2) adding tantalum pentachloride to the solution, further adding an organic iron salt and organic strontiumsalt, and performing stirring to dissolve the components completely; (3) adding sodium hydroxide to adjust the pH value of the solution; and (4) adding the solution to a hydrothermal kettle, performing a hydrothermal reaction, after the reaction is completed, performing repeated rinsing by using absolute ethyl alcohol and water, and performing drying, so as to obtain Sr2FeTaO6 powder. Sr2FeTaO6 prepared by using an oleic acid-sodium oleate system is an environment-friendly iron-containing catalyst for photocatalytic degradation of nitrogen oxides in the atmosphere and has the advantages of being wide in reaction window temperature, high in catalytic activity, free of pollution, and the like, and the material is applied to denitration at room temperature and has a high conversion rate of NOx gases such as NO.

The invention discloses a dust removal device based on sound wave agglomeration and its application, comprising a device inlet, a device body with gas circulation performance and a device outlet, wherein a high-frequency sound wave generator is arranged in the device body between the device inlet and the device outlet generator and low frequency sound wave generator. The above devices are installed on the flue at the outlet of the desulfurization tower, and the dedusting effect on the dust of various particle sizes is very good, especially the removal efficiency of PM2.5 and PM10 exceeds 85%. The equipment for SO in the flue gas ₂ and SO ₃ The removal efficiency is more than 20%.

The invention relates to an engineering strain for co-displaying glucose oxidase and catalase on spore surface and application of the engineering strain. According to an engineering strain of bacillussubtilis, a prepared fusion gene fragment cotX-god-SpyTag is transformed into bacillus subtilis WB800n, recombinant bacillus subtilis WB800n-cotX-god-SpyTag is obtained, then a fusion gene fragment P43-cat-SpyCatcheris electro-transformed into recombinant bacillus subtilis WB800n-cotX-god-SpyTag competent cells; and namely the engineering strain is obtained. The experiment shows that the interaction peptide has no effect on the glucose oxidase and the catalase linked by SpyTag/SpyCatcher, and the enzymatic properties of the expressed glucose oxidase and the catalase are obviously changed, theadaptive range of the temperature and pH is wide, and the temperature and acid resistant properties are improved.

The invention discloses a low-sulfur-resistant low-temperature carbon-based denitration catalyst as well as a preparation method and application thereof, and belongs to the technical field of flue gasdenitration. The method comprises the steps: pretreating cocoanut active charcoal to obtain a sample AC; impregnating the sample AC in a nitric acid solution, and performing drying to obtain a sampleHAC; preparing a precursor Mn(NO3)2 solution and Fe(NO3)3.9H2O powder into a Mn/Fe-containing precursor mixed solution by adopting an isopyknic impregnation method, putting HAC into the solution, performing magnetic stirring, and performing drying to obtain a sample IAC; and carrying out medium-low temperature segmented calcination on the treated sample IAC to finally obtain the low-sulfur-resistant low-temperature carbon-based denitration catalyst sample. The preparation method is simple in process, low in preparation cost and energy consumption and environmentally friendly, the prepared catalyst has the advantages that the specific surface area of the carbon-based carrier is large, the pore structure is good, oxygen-containing functional groups are rich, and the reduction performance ofthe Mn/Fe active component NOx is excellent, and the low-temperature efficient flue gas denitrification performance of the composite carbon-based catalyst can be achieved.

The invention discloses a method for removing organic matters in water, in particular to a method for degrading degradation-resistantorganic pollutants by using iron ions to activate dithionite. The method for degrading thedegradation-resistantorganic pollutants by using the iron ions to activate the dithionitecomprises the following steps that a water body containing the degradation-resistantorganic matters is selected,the dithionite and the iron ions are added,after temperature and the pH value are adjusted, the degradation-resistantorganic matters in the water body are treated. According tothemethod for degrading thedegradation-resistantorganic pollutants by using the iron ions to activate the dithionite,degradation-resistantorganic matters in organic wastewater can be efficiently andconveniently treated, and the method for degrading thedegradation-resistantorganic pollutants by using the iron ions to activate the dithionite has great application potential in organic wastewater treatment.

The invention discloses an intelligent multifunctional device for high-pressure supercritical fluid, and relates to a supercritical fluid device. A pressure source (1) of the device is connected with a kettle body part (2) which is connected with the upper end of a cold-hot circulation part (3), a booster pump (4) is arranged inside the cold-hot circulation part (3), the lower end of the cold-hot circulation part (3) is connected with the upper end of a multifunctional high-pressure treatment system (5) which is connected with an intelligent control display part (6), and the kettle body part (2) is also connected with the intelligent control display part (6). The intelligent multifunctional device has wide temperature and pressure control range, can produce various supercritical organic medium fluids, and has high working efficiency.

The invention provides a colloidal electrolyte, comprising 0.3 wt%-0.6 wt% of nano-silica, 0.02 wt%-0.7 wt% of sodium silicate, 0.01 wt%-0.3 wt% of trisodium citrate, and the balance being a sulfuric acid water solution. The invention also provides a mixing apparatus for the colloidal electrolyte. The invention also provides a preparation method of the colloidal electrolyte. The colloidal electrolyte provided by the invention is a jelly-like full-gel colloid, can not produce sulfuric acid-leakage phenomenon when being used for a storage battery, enables the storage battery to have the advantages of large electric capacity, long discharge time, long maintaining time of high electric capacity, good large-current discharge performance, strong charge acceptance, wide adaptive ambient temperature, long service life, etc. Experiments show that the storage battery has good capacity, good discharge performance, good capacity-recovery performance after overdischarge, good cycle life and relatively low internal resistance, when the colloidal electrolyte provided by the invention is used for the storage battery.