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157results about How to "Large adsorption capacity" patented technology

Granular alcohol-based bactericidal preservative liquid dehydrating agent

The invention discloses a granular alcohol-based bactericidal preservative liquid dehydrating agent. The key point of the technical scheme of the invention is that the granular alcohol-based bactericidal preservative liquid dehydrating agent is composed of red bentonite, dolomite attapulgite clay, bauxite, sulfuric acid, high-viscosity attapulgite clay powder and 3A molecular sieve raw powder. The red bentonite, the dolomite attapulgite clay and the bauxite are mixed for an acidizing treatment, then mixed and stirred with the high-viscosity attapulgite clay powder and the 3A molecular sieve raw powder to be tabletted, roasted and crushed together, and then packaged to form the granular alcohol-based bactericidal preservative liquid dehydrating agent. When the granular alcohol-based bactericidal preservative liquid dehydrating agent is placed in an alcohol-based bactericidal preservative liquid dehydrating device for dehydration, the granular alcohol-based bactericidal preservative liquid dehydrating agent only adsorbs moisture rather than effective bactericidal preservative components in the alcohol-based bactericidal preservative liquid, so that the practical effect of the alcohol-based bactericidal preservative liquid is improved greatly; and the dehydrating agent is suitable for dehydration of alcohol-based bactericidal preservative liquids and other alcohol products.
Owner:NANGTONG HAODI ANTICORROSION EQUIP

Apparatus of purifying CO2 in natural gas through low-temperature pressure swing adsorption (PSA) technology and method thereof

The invention belongs to the technical field of gas separation and purification and provides an apparatus of purifying CO2 in natural gas through a low-temperature pressure swing adsorption (PSA) technology and a method thereof. In the invention, by means of cooling capacity generated in liquefaction of natural gas, a low-temperature environment is formed to control the temperature within the range of -70 - 25 DEG C, and meanwhile, through change of pressure within the range of 0-10 MPa, an absorption process of CO2 at a low temperature with the solid absorbent is achieved. By means of increase of the temperature and reduction of the pressure of the low-temperature PSA natural gas purifying system, the CO2 in the solid absorbent is desorbed, thereby regenerating the absorbent and finally achieving the object of continuously purifying the natural gas and regenerating the absorbent. The solid absorbent can be regenerated through increase of temperature and change of pressure, thereby recycling the solid absorbent and further reducing the use of the absorbent. The apparatus is simple and available in operation process. The process can complete purification of natural gas and achieve adsorption, enrichment and capture of CO2, and also has significant practical significance in environment protection.
Owner:DALIAN UNIV OF TECH

Coking wastewater deep treatment system combing ozone catalytic oxidation and electro-adsorption

The invention relates to a coking wastewater deep treatment system combing ozone catalytic oxidation and electro-adsorption and belongs to the technical field of coking wastewater treatment. The system comprises an ozone catalytic oxidation reactor, an ozone generator, an oxygen tank, a gas-liquid separator, a filter, an electro-adsorption device, a recycling water tank, a concentrated water tank, a water generating electromagnetic valve, a concentrated water electromagnetic valve and a connection pipeline; an outlet of coking wastewater is sequentially connected with the ozone catalytic oxidation reactor, the gas-liquid separator, the filter and the electro-adsorption device, and a water outlet of the electro-adsorption device is connected with the recycling water tank through the water generating electromagnetic valve and meanwhile connected with the concentrated water tank through the concentrated water electromagnetic valve; an inlet of the ozone generator is connected with the oxygen tank, and an outlet of the ozone generator is connected with a gas inlet of the ozone catalytic oxidation reactor; the ozone catalytic oxidation reactor is connected with a direct current power source. According to the coking wastewater deep treatment system, coking wastewater deep treatment and recycling can be achieved by combining ozone catalytic oxidation and electro-adsorption, and up-to-standard release of concentrated water is further guaranteed.
Owner:TSINGHUA UNIV +1

Method for deep dephosphorization by using embedded lanthanum oxide composite resin

A method for preparing embedded lanthanum oxide composite resin mainly includes the steps that strong basicity anion exchange resin is added into a lanthanum nitrate solution, the mixture is fully stirred for reaction and then filtered, the resin is placed in a sodium hydroxide solution, reacts at the constant temperature, and then is filtered and washed to be neutral, and the processed resin is treated in a thermal mode to obtain the embedded lanthanum oxide composite resin. The method for dephosphorization by using the embedded lanthanum oxide composite resin includes the steps that the composite resin is placed in a glass adsorption column, and waste water polluted by phosphate flows downstream through the static bed column adsorption device filled with the adsorption material, wherein the temperature of the waste water is controlled to be 10 DEG C-50 DEG C, and the pH is controlled to be 2-10; when the concentration of the phosphate in outlet water is larger than 0.5 mg/L, a mixed solution of sodium hydroxide and sodium chloride is adopted for desorption, and the desorbed adsorption material can be recycled. When a polluted water body contains a great deal of co-existing ions such as sulfate radical, chloride ions and nitrate, the concentration of the phosphate in the phosphorus waste water treated through the lanthanum oxide composite resin can be reduced below the town sewage discharge standard, and secondary pollution is avoided.
Owner:HEBEI YANYONG ENVIRONMENTAL TECH CO LTD

Shale fracturing fluid forced imbibition and flowback experiment method under condition of containing adsorbed gas

The invention discloses a shale fracturing fluid forced imbibition and flowback experiment method under the condition of containing adsorbed gas. The method comprises the steps of: connecting crack development, crack underdevelopment and base block shale in series to form a shale multi-scale reservoir seepage space; putting the sample into a long rock core holder; and injecting methane gas into aclamper; after pore pressure and methane adsorption balance are controlled through a rock core outlet end back-pressure valve, achieving forced imbibition of the fracturing fluid under the action of positive pressure difference of a rock core inlet end, enabling the outlet end to monitor methane gas replaced in the imbibition process of the fracturing fluid, and in the flowback stage, simulating the flowback process of the fracturing fluid by setting the pressure difference through the rock core inlet end back-pressure valve. In the process, the core resistance is monitored in real time, and the imbibition and retention amount of the fracturing fluid in the shale multi-scale reservoir seepage space are reflected through the resistance. According to the method, the imbibition and flowback processes of the fracturing fluid in the shale multi-scale reservoir seepage space under the condition of containing the adsorbed gas can be truly simulated, and references are provided for optimizingthe soaking time and formulating a reasonable flowback system after the shale gas well is fractured.
Owner:SOUTHWEST PETROLEUM UNIV

Preparation method of silica gel loaded polyhydroxyl chelating resin for highly effective boron removal

The invention relates to a preparation method of chelating resin for highly effective boron absorption, especially a preparation method of silica gel loaded polyhydroxyl chelating resin for highly effective boron removal. The method comprises reacting meglumine and silane coupling agent in inert organic solvent, generating meglumine modified silane coupling agent, making the meglumine modified silane coupling agent react with activated silica gel, and finally generating a silica gel loaded polyhydroxyl chelating resin for highly effective boron removal. Compared with the conventional macromolecule-based boron-removing chelating resin, the invention has simple and economical method, overcomes the detects in the present synthesis flow that the silica gel is dissolved for alkalinity of the reaction system is too high (pH more than 11) when surface modified halogen or silica gel of epoxide group reacts with meglumine to synthesize the silica gel loaded polyhydroxyl boron-removing chelating resin, or that the silica gel loaded polyhydroxyl boron-removing chelating resin cannot be synthesized for the nucleophilic substitution of halogen or epoxide group with meglumine cannot be carried out effectively when alkalinity of the reaction system is too low (pH less than 10).
Owner:CENT SOUTH UNIV

Preparation method of ionic liquid-loaded palm tree bark adsorbent

The invention discloses a preparation method of an ionic liquid-loaded palm tree bark adsorbent. The preparation method is characterized by comprising the following steps: after drying and crushing, drying the crushed loofah sponge processed by virtue of sodium hydroxide and hydrogen peroxide, so as to obtain oxidized palm tree bark; adding the following components in a reactor in mass percentage concentration (the sum of the components is 100%), 63-75% of epoxy chloropropane and 10-18% of oxidized palm tree bark, carrying out constant temperature stirring and reaction for 40-60 minutes at 70+/-2 DEG C, after cooling, adding 4-12% of benzenetetracarboxylic anhydride and 3-8% of N-ethyl-3- methylpyridine tetrafluoroborate ionic liquid, carrying out constant temperature stirring and reaction for 24-30 hours at 50+/-2 DEG C, carrying out suction filtration after cooling, washing by virtue of deionized water until filtrate is neutral, washing by virtue of a small amount of ethanol, and drying in a vacuum drying oven at 50 DEG C, so as to obtain the ionic liquid-loaded palm tree bark adsorbent. The adsorbent has high adsorption capacity to triclosan, is excellent in physical, chemical and mechanical properties, strong in regeneration capacity and low in cost, can be repeatedly used and is environmentally friendly.
Owner:UNIV OF JINAN

Preparation method and application of magnetic core-hollow porous molecular imprinting polymer satellite assembly for macrolide antibiotics

The invention discloses a high-selectivity magnetic core-hollow porous molecular imprinting polymer satellite assembly applied to determining the residual quantity of trace macrolide antibiotics in animal-derived foods and a preparation method of the assembly. With mesoporous silicon as a sacrificial support template, methacrylic acid as a functional monomer and spiromycin as a template molecule,hollow porous molecular imprinting polymers (HPMIPs) are prepared by means of a thermal initiation polymerization method; ferroferric oxide magnetic nanoparticles (Fe3O4NPs) are prepared by means of asolvothermal method. By utilizing the self-polymerization properties of dopamine, polydopamine-coated ferroferric oxide magnetic nanoparticles (Fe3O4@polyDA) are prepared, the HPMIPs are grafted on the surfaces of the polydopamine-coated ferroferric oxide magnetic nanoparticles (Fe3O4@polyDA), synthesized magnetic hollow porous molecular imprinting polymers (Fe3O4@polyDA-HPMIPs) are obtained andserve as a magnetic dispersion solid phase extraction adsorbent, macrolide drugs are selectively enriched and separated, and in combination with HPLC-MS/MS detection, the effect is ideal. The preparedmaterial has the advantages of high affinity, high adsorption capacity, a good magnetic response effect and the like and has broad application prospects in the field of food detection and the like.
Owner:CHINA PHARM UNIV

Fluorinated conjugated microporous polymer absorption material and application thereof

The present invention provides a fluorinated conjugated microporous polymer providing good absorption capacity for heavy metal ions in a water body, and a preparation method thereof. The fluorinated conjugated microporous polymer is prepared by respectively carrying out catalysis copolymerization on 1,3,5-trifluoro-2,4,6-triethynylbenzene or 1,3,5-triethynylbenzene, wherein the specific surface area is about 700-1000 m<2>/g, the contact angle of the surface water is 155-167 DEG, the polymer provides selective absorption ability (only absorbs heavy metal ions, and does not absorb water) for heavy metal ions in the water body, the re-use performance is good, and the absorption capacity on heavy metal ions such as Cu<2+>, Ni<2+> and Cd<2+> is 0.07-0.18 mmol/g. According to the present invention, the material preparation process route is simple, the operations are easy, advantages of high absorption capability, high selectivity, good dynamics absorption property, good re-use property and the like are provided when the material is applied for heavy metal ion absorption in the water body, and the polymer has potential application values in the fields of crude oil leakage treatment, industrial inorganic wastewater treatment, liquid/liquid separation, water treatment and the like.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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