48results about How to "Guaranteed oxidation effect" patented technology

The invention discloses a preparation method of magnetic graphene oxide and application thereof. The preparation method comprises the following steps: 1 preparing mother liquor; 2 measuring the content of graphene oxide in the mother liquor; 3 obtaining an adsorbing material, namely the magnetic graphene oxide, by utilizing the mother liquor, FeCl[3].6H[2]O, FeSO[4].7H[2]O and stronger ammonia water. The magnetic graphene oxide prepared through the method is used for processing waste water containing methylene blue. According to the method, the graphene oxide is compounded through the improved Hummers method, ferroferric oxide nano-particles are loaded on a graphene oxide layer according to a certain proportion through a coprecipitation method, the obtained magnetic adsorbing material is used for the absorption treatment of a methylene blue solution, the synthetic process is simplified, the oxidation effect is guaranteed, and meanwhile the energy consumption is reduced, the time is saved, and the preparation cost is reduced; the magnetic adsorbing material which is applicable to different magnetic field environments and methylene blue waste water of different types of concentration is obtained, and the material can be recycled repeatedly.

The invention relates to an advanced oxidation-biological treatment device for non-biodegradable waste water. The device comprises a baffle plate Fenton reactor (6), a precipitating pond (12), a baffle plate anaerobic pond (15) and a contact oxidization pond (18). Waste water to be treated flows through each reaction pond of the baffle plate Fenton reactor in sequence, reacts and enters the precipitating pond for precipitating, supernate in the precipitating pond enters each compartment of the baffle plate anaerobic pond in sequence for undergoing anaerobic digestion, water undergoing anaerobic treatment in the baffle plate anaerobic pond enters the contact oxidation pond for undergoing aerobic treatment, treated effluent enters an oblique-tube precipitating pond, and sludge undergoing secondary precipitation in the oblique-tube precipitating pond returns to the foremost end of the baffle plate anaerobic pond through a sludge reflux pump to realize reduction of the residual sludge, and treated water is stored in the reclaimed water pond. Compared with the prior art, the advanced oxidation-biological treatment device has the advantages of high agent use efficiency, low energy consumption, simple structure and remarkable increase of the sludge digesting efficiency and the gas yield.

The invention discloses a method for purifying yellow phosphorus by adopting methods of activated carbon adsorption together with dilute nitric acid rinsing. Firstly, activated carbon and molten industrial yellow phosphorus are mixed and stirred in a refining kettle, and after the adsorption is completed, the activated carbon is separated from the yellow phosphorus by a filter machine; then the processed yellow phosphorus is circularly rinsed with dilute nitric acid in an acid pickling tower; residual organic matters, arsenic and low-price metal ions in the yellow phosphorus, which are not adsorbed by the activated carbon, are oxidized by utilizing the oxidizability of the dilute nitric acid; and afterwards, the yellow phosphorus is circularly rinsed in a water washing tower by using deionized water, thereby completing yellow phosphorus purification. The invention adopts a process with treatment methods of activated carbon adsorption, dilute nitric acid rinsing and deionized water rinsing, and integrates the advantages of various methods; and the content of arsenic in the acquired yellow phosphorus is reduced to below 20 ppm, so that high-purity yellow phosphorus satisfying the requirement for producing electronic grade phosphoric acid can be acquired, and the hidden danger of explosion caused by using high concentration nitric acid is avoided.

The invention relates to a method for treating dye wastewater with high concentration by using a technology combining ultrasound wave with enzyme, comprising the following steps of: feeding the treated active carbon in a sonochemical reactor; attaching enzyme to the surface of the active carbon and holes; filtering and removing large-particle suspended substances in the dye wastewater; introducing the large-particle suspended substances into the sonochemical reactor; under the aeration condition, radiating the fluidized state active carbon to which the enzyme is attached by using ultrasound wave with the frequency 40kHz and the power of 40W; generating a hydroxyl free radical with extremely-strong oxidation capacity and adsorption and decolorization reaction of the active carbon by using the coupling action of ultrasound-enzyme technology, thereby improving the biochemical property of the wastewater; and enabling the treated dye wastewater flowing out of the sonochemical reactor and then entering a bioreactor for further degrading. The invention has remarkable decolorization effect of the wastewater and greatly improves the biochemical property when being used as a pretreatment method of the dye wastewater with high concentration.

The invention discloses a zinc oxide method treatment process for sulfur dioxide waste gas, and belongs to the field of treatment of sulfur dioxide waste gas. The proposed scheme comprises the following steps: collecting crude zinc oxide, and collecting crude zinc oxide produced in a fuming furnace for lead smelting, performing alkali elution on the collected crude zinc oxide so as to remove fluorine and chlorine, arranging a pre-washing tower at the front end of an absorption tower so as to eliminate influences of organic matter and impurities in flue gas on production of a subsequent wet-method zinc-smelting system, performing high pressure air oxidation on a zinc sulfite mixed solution, inserting an aeration tube into the zinc sulfite mixed solution, blowing compressed air into the aeration tube with the blown air pressure of 0.03-0.08 Mpa, and oxidizing zinc sulfite so as to produce a zinc sulfate solution under a forced oxidation atmosphere. The desulfurization efficiency can reach 95% or above, the emission concentration of SO2 is kept stable at 100 mg/Nm<3> or below, and the operating cost of the system is low; and only the operating cost of devices is required, and no costof desulfurization agents is generated.

The invention relates to a nanoporous antioxidant resin-based composite material and a preparation method thereof. The composite material comprises the following components by mass: 20-80 wt% of antioxidant resin and 20-80 wt% of a reinforcer. The preparation method comprises the steps: (1) preparation of an antioxidant resin solution; (2) low-pressure RTM impregnation; (3) a sol-gel reaction; and(4) drying to finally obtain the composite material. Compared with the prior art, the composite material prepared by the invention has the advantages of light weight, high strength, excellent heat insulation property, ablation resistance, adjustable nanoparticle network structure and the like; through the synergistic effect of physical and chemical antioxidants, the oxidation resistance of a prepared matrix resin is greatly improved compared with the oxidation resistance of traditional resin, and the matrix resin has the advantages of good oxidation resistance in an environment with a temperature of 600-2000 DEG C and the like and can be widely applied to an external heat protection system of a hypersonic aircraft in an aerobic atmosphere.

The invention discloses a preparation method of a Firocoxib intermediate. The preparation method belongs to the technical field of chemical synthesis. The preparation method comprises the steps: adding isobutyryl-containing aryl halide, a catalyst, a ligand and thin alkali into an organic solvent at an air or oxygen atmosphere, raising the temperature to carry out a reaction for 10-20h, and then,carrying out aftertreatment to prepare 2-methyl-1-[4-(methylsulfonyl)phenyl]propane-1-ketone. According to the preparation method, isobutyryl-containing aryl halide is used as a reaction raw material,so that a high-yield target product can be obtained; in addition, compound raw materials such as thioether or sulfoxide capable of generating great environmental hazards are avoided from being adopted, so that the production is environment-friendly, meanwhile, few reaction steps are required, few side reactions are generated, and the purity and yield of a product are high.

The invention discloses a cerous phosphate based catalyst for zero-valent mercury oxidation. The catalyst is mainly composed of cerous phosphate, and comprises modification components; wherein the modification components are composed of at least one oxide of cobalt, manganese, copper, iron, vanadium, cerium, molybdenum, tin, and the like. The invention also discloses a preparation method and applications of the catalyst. The preparation process is simple, and the operation is convenient. Compared to the prior art, the catalyst has the following advantages: (1) the active components of the catalyst are all common metal oxides, the common metal phosphate is taken as the carrier, the raw materials are simple and easily available, and the operation is convenient; (2) the catalyst has a very good sulfur-resistant performance; (3) the CePO4 catalyst, which has been modified by metal oxides, is well adapt to the flue gas. The provided catalyst can fully utilizes the NO in flue gas to greatly promote the oxidation of zero-valent mercury. The great dependence on HCl of conventional catalysts is gotten rid of.

The invention provides a continuous oxidation treatment system and a continuous oxidation treatment method, and belongs to the technical field of light metal surface treatment. The continuous oxidation treatment system comprises an annular conveying device, an oxidation tank which is used for holding an electrolyte, and a conductive row which is matched with electrode contacts in a moving processof hanging tools; the conveying device is provided with a plurality of hanging tools; the hanging tools are used for fixing a part to be machined; and the electrode contacts are arranged on the hanging tools. The conveying device comprises a first conveying section, a descending section and an ascending section which are positioned above the oxidation tank; the descending section and the ascendingsection are respectively connected to a front end and a rear end of the first conveying section in a conveying direction so that the part to be machined enters the oxidation tank gradually when the part to be machined moves to the descending section along with the conveying device, and leaves away the oxidation tank gradually when the part to be machined moves to the ascending section; and the conductive row is arranged between the first conveying section and the oxidation tank. The system is simple in structure; the oxidation period is shortened; the production efficiency is high; and the energy consumption is reduced.

The invention discloses a preparation method of a packaging bag capable of being rapidly degraded, and belongs to the technical field of packaging bags. A raw material formula can be improved based on a light-biological combined degradation mode, meanwhile, degradation-assisting scales are introduced in the film forming process, the degradation-assisting scales can be autonomously combined into a dense state, meanwhile, the outer surface of a thin film is protected, and normal use is not interfered. After being scrapped, the plastic packaging bag enters the natural environment, the degradation-assisting scales can be partially dissolved under the action of water and are changed into net-shaped gaps from the original dense state, the plastic packaging bag can enter the interior of the packaging bag under the action of external light, and the back faces of the degradation-assisting scales convert light energy into heat energy after absorbing the light energy. Meanwhile, oxygen release is accelerated, the thermal oxidation effect is improved, in addition, the external biodegradation effect is matched, the degradation efficiency of the packaging bag can be remarkably improved, and the decomposition period is shortened.

The invention provides a coal chemical-looping combustion mercury removal device. The coal chemical-looping combustion mercury removal device comprises a fuel reactor; a fuel reactor U-phase valve which is connected with the fuel reactor; an air reactor which is connected with the fuel reactor U-phase valve; an air cyclone separator which is connected with the air reactor; a flue gas cyclone separator which is connected with the fuel reactor; an air reactor U-phase valve which is simultaneously connected with the air cyclone separator, the flue gas cyclone separator and the fuel reactor; a condenser is connected with the flue gas cyclone separator; a SCR denitration device which is connected with the condenser; a flue gas dust remover which is connected with the SCR denitration device; a wet flue gas desulfurizer which is connected with the flue gas dust remover; and a CO2 catcher which is connected with the wet flue gas desulfurizer. The invention further provides a coal chemical-looping combustion mercury removal method based on the coal chemical-looping combustion mercury removal device. The mercury removal method is used for mercury removal of flue gas generated by combustion.

The invention discloses an integrated sewage treatment device. The integrated sewage treatment device comprises an adjusting pool, a contact oxidation pool, a membrane pool and a sludge pool which areconnected in sequence, wherein the contact oxidation pool comprises an anaerobic pool, an anoxic pool and an aerobic pool which are connected in sequence; the anaerobic pool is connected with the adjusting pool; the aerobic pool is connected with the membrane pool; the aerobic pool comprises a pool body, an aerator, an oxygen supply machine, an air injection assembly and a driving mechanism; theair injection assembly comprises a rotating pipe, aeration pipes and oxygen supply pipes; and the driving mechanism is connected with the rotating pipe to drive the rotating pipe to rotate, so the aeration pipes and the oxygen supply pipes swing. The above-mentioned integrated sewage treatment device provided by the invention has the following advantages: the rotating pipe is provided with a plurality of aeration pipes and oxygen supply pipes along an axial direction; the aeration pipes can spray out air; the oxygen supply pipes can spray out oxygen; the driving mechanism can drive the aeration pipes and the oxygen supply pipes to swing; thus, sewage at all depths in the aerobic pool can be in full contact with the air and the oxygen; the oxidation effect of the aerobic pool is guaranteed;and the treatment effect of sewage is guaranteed.

The invention relates to a method and a device for treating ethylene waste lye, the ethylene waste lye is treated by an air flotation unit and then enters a first heat exchanger of a heat exchange unit, and the waste lye after heat removal enters a wet oxidation unit and is in contact with oxygen-containing gas under the pressure condition that the solution is kept in a liquid phase to perform wet oxidation reaction; the reacted material enters a second heat exchanger of the heat exchange unit, the material subjected to heat exchange enters a gas-liquid separation unit after being cooled and decompressed, and the separated gas phase returns to the air flotation unit; the first heat exchanger and the second heat exchanger use the same heat exchange medium. According to the characteristics of the ethylene waste alkali liquor, the problems of blockage and scaling of heat exchange equipment, local overtemperature of the wet oxidation reactor and the like caused by long-term operation can be avoided while reaction heat is fully utilized and the operation energy consumption is reduced.