32results about How to "Applicable purification" patented technology

The invention discloses a method for preparing a Cu-SSZ-13 catalyst through an in-situ synthesis method. A Cu-SSZ-13 molecular sieve sample is prepared by taking acid as an exchange reagent and treating through an in-situ synthesis method. Compared with the currently used ammonium nitrate ion exchange method, the after treatment method for the Cu-SSZ-13 molecular sieve prepared through an in-situ synthesis method is more environment-friendly and effective; the activity of the prepared catalyst is higher; and the hydrothermal stability is better. According to the method, the silica-alumina ratio of the molecular sieve structure is increased while the catalyst having high catalytic activity is obtained; and the obtained Cu-SSZ-13 catalyst has excellent hydrothermal stability, wide temperature window and excellent N2 selectivity, and is very applicable to purification of tail gas from diesel cars.

The invention discloses a hydrothermal-resistant and sulfur-tolerant overall structure combustion catalyst and a preparation method thereof. A matrix of the catalyst adopts an overall honeycomb ceramic body, the surface of the matrix is coated with coatings of SiO2, Al2O3 and TiO2 and coatings of transition metal oxides of V, Mn, Fe, Co, Cu, W and the like, and then, active components Pt and Pd are dipped on a carrier supporting the mixed oxide coatings separately or jointly. The disclosed overall structure catalyst has high activity and stability, can tolerate high water content and SO2-containing atmosphere, is applicable to combustion tail gas purification of water heaters or gas-fired boilers with natural gas, liquefied petroleum gas or coal gas as fuel and can be used for efficient removal and purification of sulfur-containing VOC gas. The preparation process of the catalyst is simple and the cost is low.

The invention discloses an in-situ synthesis method and applications of a CuFe-SAPO-34 catalyst, and belongs to the technical field of catalysis. The method comprises the following steps: adding pseudo-boehmite into deionized water, stirring to dissolve pseudo-boehmite, then adding ortho-phosphoric acid and fumed silica, evenly mixing, then adding copper salts and tetraethylene pentamine, fully stirring, then adding Fe salts and n-propylamine; adding fully stirred gel into a hydrothermal reactor to carry out crystallization, after crystallization reactions, cooling to the room temperature, separating solid crystals from the mother liquor, washing the solid crystals by deionized water until the solid crystals become neutral, drying, and finally burning the solid crystals in the air to obtain the CuFe-SAPO-34 microporous molecular sieve catalyst. The CuFe-SAPO-34 catalyst is synthesized in one step; the loading amount of Fe is optimized; and the catalytic performance and low temperature water resisting performance of the CuFe-SAPO-34 catalyst are prominently improved.

The invention belongs to fields of solar photothermal conversion, sea water desalinization and new materials and relates to a solar photothermal purification method of water based on corncob integralcarbon material. According to the principle, the natural structural feature of corncob is utilized, the corncob is carbonized at a certain temperature but not powdered, and the integral corncob-basedcarbon material is prepared and is utilized to perform solar photothermal evaporation of water; part of the corncob integral carbon material is vertically soaked in water to be purified, and the otherpart is vertically exposed in air; clean water is produced with water vapor under sunlight irradiation. The method herein is suitable for purifying water, including sea water, bitter salty water, high-fluorine water, industrial wastewater, domestic wastewater and the like. Agricultural product wastes and renewable clean energy, solar energy, are utilized herein to produce clean fresh water; the method herein is simple and efficient, low in carbon, green and free of pollution; the water purification method is provided herein.

The invention discloses an absorbent for selectively absorbing sulfur dioxide and an application thereof, which belong to the technical fields of environmental protection and gas purification. The absorbent comprises the following components by mass percentage: 5-80% of organic multi-amine; inorganic strong acid, wherein the mol ratio of the inorganic strong acid to the organic multi-amine is (0.3-1.2):1; 0.01-1.00%of an antioxidant, 0.01-8.00% of a desulfuration activator, and the balance of water; and the pH value of the absorbent is 4.0-6.5. The SO2 absorbent has high absorptivity and selectivity on SO2, SO2 can be absorbed from a mixing gas containing SO2 and CO2, but CO2 is not absorbed, the initial absorption rate can reach 100%, the absorption rate can still reach more than 99% in 30 minutes, and the absorbent is suitable for purifying the industrial exhaust gas containing SO2, especially the exhaust gas of a sulfur recovery device. The SO2 absorbent has good renewable performance and stability, and is in favor of cyclic utilization of the absorbent.

The invention relates to an organic waste gas purifier. The organic waste gas purifier comprises an adsorption unit and a plasma decomposition unit; organic waste gas is purified by virtue of the filtering of a filter and the adsorption of active carbon in a runner adsorption device and then is discharged into upper air; the regenerated hot air formed by virtue of the electric heating is used for desorbing and regenerating the runner adsorption device, the generated concentrated volatile organic matter air enters a filler bed medium blocking discharging reactor to be degraded and mineralized into carbon dioxide and water, and the waste heat of the exhaust gas is recovered, so that the energy consumption is saved. An adsorption runner with a honeycomb structure is combined with a plasma purifier, so that the organic waste gas purifier is very suitable for purifying the high-air-volume low-concentration organic waste gas.

The invention provides a waste gas treatment apparatus. The waste gas treatment apparatus comprises a filtration system, a biological treatment unit and a biological enhancement and deodorant atomization reaction area, wherein the filtration system is used for removing particulate pollutants in waste gas; the biological treatment unit is used for guiding the waste gas in the filtration system to pass through the biological treatment unit from bottom to top and further degrading and adsorbing organic matters in the waste gas; the biological enhancement and deodorant atomization reaction area isused for guiding the waste gas in the biological treatment unit to remove malodorous substances and organic matters in the waste gas to the maximum extent from bottom to top under the action of a packing layer, a bacteria liquid and deodorant storage area and a top atomization device from the bottom of the biological enhancement and deodorant atomization reaction area. The technical problem thatindustrial malodorous waste gas and kitchen waste gas are difficult to treat is effectively solved, and the investment and operation cost is low; the removal efficiency of organic pollutants in the waste gas is 98% or above; the peculiar smell removal efficiency is greater than 99%; and the waste gas treatment apparatus is suitable for purifying industrial waste gas and kitchen lampblack waste gas.

The invention discloses a method for preparing a Cu-SSZ-13 catalyst through an in-situ synthesis method. A Cu-SSZ-13 molecular sieve sample is prepared by taking acid as an exchange reagent and treating through an in-situ synthesis method. Compared with the currently used ammonium nitrate ion exchange method, the after treatment method for the Cu-SSZ-13 molecular sieve prepared through an in-situ synthesis method is more environment-friendly and effective; the activity of the prepared catalyst is higher; and the hydrothermal stability is better. According to the method, the silica-alumina ratio of the molecular sieve structure is increased while the catalyst having high catalytic activity is obtained; and the obtained Cu-SSZ-13 catalyst has excellent hydrothermal stability, wide temperature window and excellent N2 selectivity, and is very applicable to purification of tail gas from diesel cars.

The invention relates to a car 4S stink waste gas purifying device. The car 4S stink waste gas purifying device comprises an adsorption unit and a plasma decomposition unit; the stink waste gas in a car 4S shop is purified by virtue of the filtering of a filter and the adsorption of a runner adsorption device to be discharged in the upper air; regenerative hot air formed by utilizing the electric heating is used for desorbing and regenerating the runner adsorption device, generated concentrated volatile organic matter air enters a plasma purifier to be decomposed and mineralized into carbon dioxide and water, and the waste heat of exhaust gas is recovered, so that the energy consumption is saved. An adsorption runner with a honeycomb structure is combined with the plasma purifier, so that the car 4S shop stink waste gas purifying device is very suitable for purifying the stink gas in the car 4S shop.

The invention provides a domestic pyrolysis purifying range hood. The domestic pyrolysis purifying range hood comprises a pyrolysis cooking fume purifying device, a flue connected with the top end of the pyrolysis cooking fume purifying device, and a thermal baffle. The flue is provided with a draught fan. The thermal baffle is connected under the pyrolysis cooking fume purifying device in a hanging mode through a fixing assembly. The domestic pyrolysis purifying range hood is simple in structure, convenient and fast to install, practical and convenient to use, reliable in operation, long in working life and high in purifying efficiency. By the adoption of the cooking fume high-temperature combustion and decomposition principle, cooking fumes produced in cooking can be collected to be fully combusted, grease and other toxic substances in the cooking fumes can be effectively removed, and therefore the cooking fumes can be purified completely, emission of harmful gases is avoided, environmental pollution caused by direct emission of the cooking fumes is abated, and the range hood is suitable for purifying and exhausting cooking fumes in home kitchens.

The invention relates to a coke oven coaling flue gas purification system and method. The coke oven coaling flue gas purification system comprises a coaling dust removal device, a flue gas heat exchanger, an adsorption purification device, a regeneration heater and a sulfur recovery device, wherein a gas inlet of the coaling dust removal device is connected with a coaling hole of a coke oven; a gas outlet of the coaling dust removal device is connected with a gas inlet of the flue gas heat exchanger; a first gas outlet of the flue gas heat exchanger is connected with a gas inlet of the adsorption purification device; a second gas outlet of the flue gas heat exchanger is connected with a gas inlet of the regeneration heater; a gas outlet of the regeneration heater is connected with the gasinlet of the adsorption purification device; a gas return port of the adsorption purification device is connected with a gas inlet of the flue gas heat exchanger; and a gas outlet of the adsorption purification device is connected with a gas inlet of the sulfur recovery device. The technical problems that in the coke oven coaling process, the system operation stability is poor, and the purification effect of pollutants such as sulfide is poor are solved.

The invention relates to preparation and application of an adsorbent for removing impurities in propane material flow, and belongs to the technical field of adsorbent preparation. The adsorbent is characterized in that the molecular sieves, aluminum oxide and rare earth oxides are proportionally mixed; then, the treatment and shaping are performed according to the expected shape; the required adsorbent can be obtained. Compared with the prior art, the adsorbent prepared by the method can be used for selectively adsorbing polar molecules such as unsaturated hydrocarbon, oxygen-containing compounds, sulfide and nitrogen-containing compounds; the advantages of high adsorption volume, wide use temperature range and the like are realized; the adsorbent is particularly applicable to the propanematerial flow purification in propane deep processing processes such as acrylonitrile preparation through propane ammoxidation, propylene preparation through propane dehydrogenation, and olefin preparation through propane cracking.

The invention provides a preparation method of an efficient wetting purifying agent. According to the preparation method of the efficient wetting purifying agent, the wetting capability of the purifying agent is effectively improved through reduction-vulcanization and crosslinking reaction; the purifying agent has higher purifying capacity for pollutants with less moisture such as sludge and farmland soil, and has high purification cruising ability; the preparation method for the purifying agent can efficiently improve the mechanical strength of a water purifying agent carrier.

The invention provides a household kitchen fume purifying method and a range hood, belonging to the field of household appliances, wherein the method and range hood provided by the invention are used for solving the problem that kitchen fume pollutes the environment. In the range hood, a water curtain is arranged on a fume channel; water forming the water curtain is a purifying solution added with an oil dissolving agent; when fume passes through the water curtain in suction of the range hood, oil mist in the fume is sufficiently contacted with the purifying solution, so that the oil mist is completely dissolved in the purifying solution, and the purified fume is emitted outdoors through a fan; a fume purification chamber is arranged behind the frame of the range hood, and an inclined fume isolation plate is arranged in the middle of the fume purification chamber; a purifying solution nozzle is arranged above the fume isolation plate, the air inlet of the fan is arranged under the fume isolation plate, and a water curtain nozzle is arranged at the end part of the lower end of the fume isolation plate; a purifying solution tank is arranged on the lower part of the fume purification chamber; a circulating water pump is connected with the purifying solution tank; and a water outlet is connected with the purifying solution nozzle and the water curtain nozzle. The range hood has the characteristics of simple structure, practicability, convenience, high purification efficiency, energy conservation and environmental friendliness, and is suitable for purification and emission of fume for household kitchens.

The invention provides an efficient water purifying agent not needing to be recovered. The water purifying agent can be naturally degraded, does not need to be recovered, does not generate any pollution to the environment either and is clean and efficient, a particle accumulation is prepared from the following components in percentage by weight: 60-80% of a carrier loaded with sulfur-oxidizing bacteria, 10-20% of snow sand and 10-20% of quartz stone, wherein the carrier comprises a macropore mesoporous skeleton structure, and the sulfur-oxidizing bacteria is an aerobic mixture and / or facultative anaerobic mixture.

The invention provides an efficient wetting purifying agent. The wetting purifying agent is 12 to 23 percent in water content. According to the purifying agent provided by the invention, the wetting capability of the purifying agent is effectively improved through reduction-vulcanization and crosslinking reaction; the purifying agent has higher purifying capacity for pollutants with less moisturesuch as sludge and farmland soil, and has high purification cruising ability; the mechanical strength of a purifying agent carrier is relatively high.

The invention discloses a C / Bi / Bi2MoO6 polarization material, a preparation method thereof and an application of the material in photocatalytic degradation of dyes. The C / Bi / Bi2MoO6 polarization material is prepared by the following steps: firstly preparing an EDTA-Bi precursor, then preparing a C / Bi / Bi2MoO6 composite material from the EDTA-Bi precursor, and finally preparing the C / Bi / Bi2MoO6 polarization material. The C / Bi / Bi2MoO6 polarization material has the advantages of low price, simple preparation method, good stability and the like, has a good effect in photocatalytic degradation of acolored dye malachite green and a colorless dye bisphenol A, is suitable for removal of organic pollutants and purification of water, and is also suitable for industrial cyclic utilization.

The present invention discloses water purification equipment, which is used for filtering raw water, and comprises: a filtration system for filtering raw water; a heating system for heating the raw water filtered by the filtration system; a primary vaporization system, wherein the primary vaporization system comprises a primary vaporization device body and a waste gas removing device, the waste gas removing device comprises a first water storage container and a plurality of separation plates positioned at the outer side of the first water storage container, and a receiving space is formed from the two adjacent separation plates and the outer sides of the primary vaporization device body and the first water storage container, and is communicated to the first water storage container; and a second vaporization system, wherein the secondary vaporization system comprises a secondary vaporization device body and a gas-liquid conversion device, and the gas-liquid conversion device is used for liquefying purified water vapor so as to make the purified water vapor form purified water. According to the present invention, the water purification equipment performs the grading treatment on the raw material so as to effectively remove the pollutants from the raw water, does not have the high requirement on the raw material, can completely recover and utilize the energy, and is suitable for the water purification in any places.

The invention relates to the technical field of photo-thermal materials, in particular to a photo-thermal conversion material based on thalia dealbata stems and a preparation method and application thereof. The thalia dealbata stems are subjected to flame carbonization and tubular furnace carbonization so as to allow the thalia dealbata stems to have good photo-thermal conversion performance, and then water evaporation performance is accelerated through solar energy to obtain purified water; in addition, the water evaporation performance and the clean water yield of the thalia dealbata stems can be further improved in a simple polydopamine (PDA) coating mode, and purified water which can be directly drunk is obtained; and thus, the problems that an existing interface water evaporation photo-thermal material is difficult to be practically applied to production due to the fact that raw material cost is high, a preparation process is complex, and technology is time-consuming and labor-consuming are solved.

The invention discloses a purifying method of (E)-2-phenyl-3-(3,5-dimethoxy-4-isopropyl benzene) crylic acid and comprises two steps: 1, carrying out selective esterification on (E)-2-phenyl-3-(3,5-dimethoxy-4-isopropyl benzene) crylic acid with purity of 80-85% to obtain (E)-2-phenyl-3-(3,5-dimethoxy-4-isopropyl benzene) crylic acid a with purity of 90-95% and generating corresponding esters from impurity acids, wherein a very small quantity of corresponding esters are generated under the same reaction conditions since the product has relatively large steric hindrance and therefore the selective esterification effect is achieved; and 2, carrying out recrystallizing reaction, wherein a proper recrystallizing reagent is used and (E)-2-phenyl-3-(3,5-dimethoxy-4-isopropyl benzene) crylic acid with purity of 99% or above can be obtained. The method is applicable to purification of (E)-2-phenyl-3-(3,5-dimethoxy-4-isopropyl benzene) crylic acid and is further applicable to preparation of cis-2-(1-methylethyl)-5-[(E)-2-phenylethenyl]benzene-1,3-diol.

The present invention relates to the recovery and utilization process of molecular sieve adsorption product gas in neon isotope separation. In the process, molecular sieve adsorption gas adopts segmental desorption to recover 90-95%, and the recovery gas purification adopts chemical method to remove O2 from metal Cu scraps and sponge Ti. , N2, H2, the purification column is placed vertically, both ends are filled with Cu chips, the middle is sponge Ti, CO2 is absorbed by NaOH solution, the gas in the purification column is naturally circulated by thermosiphon principle, and the gas purity can be purified from 70 to 98% to 99%; The process of the invention is simple, the purification efficiency is high, no excessive manual operation is required, and the cost can be saved by about 20%.

The invention provides a tin-containing metal oxide catalyst as well as a preparation method and application thereof, the general formula of the tin-containing metal oxide catalyst is MaSnbNcOx, and x is the number of O atoms required by element valence balance; the molar ratio of the M element to the Sn element to the N element in the tin-containing metal oxide catalyst is 1: (0.1-3): (0.1-2). The tin-containing metal oxide catalyst provided by the invention has excellent hydrothermal stability and is very suitable for being applied to purification of nitrogen oxides; even in a high airspeed environment, the catalyst still has excellent catalytic performance, and has excellent N2 generation selectivity.