41results about How to "Complete oxidation reaction" patented technology

The invention relates to a balancing lead smelting process for comprehensive resource utilization and a device thereof. The process comprises the following steps: granulating a raw material containing lead and a fluxing agent after proportioning, sending to an oxygen bottom-blown smelting furnace for smelting to produce primary crude lead, lead ash and flue gas of SO2; sending the flue gas of SO2 to a sulfuric acid system for acid making after recovering waste heat by a waste heat boiler and duct collection by a dust arrester installation; adjusting form of the lead ash and adding the lead ash to a blast furnace together with coking coal for reducing smelting to produce secondary and third crude lead; electrorefining the crude lead to obtain refined lead and anode slime, treating and recovering the anode slime to obtain lead, stibium, bismuth, gold and silver metals; and separating slag of the blast furnace from the crude lead and sending to a fuming furnace to recover zinc oxide, the lead, indium and germanium. A system for realizing the process comprises the oxygen bottom-blown smelting furnace, an oxygen lance, an electrically-heated settler, a slag casting device, the waste heat boiler with a vertical ascending segment of membrane wall structure, the blast furnace, the fuming furnace and a ventilating device. The process design and system improvement help realize balancing optimized recovery of Pb, Zn, Au, Ag, Bi, Cu, In, Sb and S elements.

The invention discloses a method for preparing chromium salt. The method is characterized by comprising the following steps: sufficiently and uniformly mixing a raw material containing chromium oxide (chrome ore or chromium slag) with sodium carbonate, carrying out oxidizing roasting at the roasting temperature of 900-1100 DEG C for 0.5-2.5 hours in an atmosphere with the oxygen content of higher than 20% by using microwaves as a heat source, leaching the roasted product with water, and preparing chromium salt from the leach solution. The chemical analysis on the clinker and leaching slag indicates that the insoluble waste slag contains less than 5% of chromium (on the basis of chromic oxide). The method reduces the chromium content in the discharged chromium slag, enhances the chromium utilization ratio in the chromium salt production process, effectively saves the chrome ore resources, and has obvious advantages of resource saving and environmental protection by using the microwaves as the heat source instead of the traditional coal and natural gas heating.

The invention belongs to the technical field of waste gas desulfurization and purification, particularly provides a modified active carbon desulfurizer and a preparation method thereof, and a hydrogen sulfide waste gas treatment method using the desulfurizer. The modified active carbon desulfurizer is prepared from impregnating activated carbon with active agent mixed solution comprising phenol, acetone, sodium carbonate, ferric nitrate and organic solvent, and drying and roasting the mixture. The modified active carbon desulfurizer converts the hydrogen sulfide in the waste gas into sulfur dioxide at atmospheric temperature and pressure under the absorption and catalytic oxidation action, and the sulfur dioxide is converted into SO42- in water phase by washing and removed. The waste gas treatment method uses the modified active carbon desulfurizer, and prevents the defects that the desulfurizer needs to be regularly desorbed and regenerated due to blockage caused by adsorption saturation and generated elemental sulfur. Compared with an ordinary activated carbon desulfurization process, the process has the advantages of high hydrogen sulfide removal rate, long service life of the desulfurizer, low operation cost, simplicity in operation and management and the like.

The invention provides a desalination pretreatment method and device for raw wastewater before entering a reactor. The device and the method are as below: raw wastewater is mixed with a small amount of an oxidizer; the temperature is adjusted to a supercritical state; and the salt components are separated. Most salts dissolved in the raw wastewater can be removed through the device and the method provided by the invention to prevent clogging of a subsequent supercritical water treatment system for raw wastewater. Besides, a corrosion resistant / abrasion resistant lining can be arranged to realize corrosion / abrasion resistant effect, so as to prolong the service life of the device.

The invention discloses a treatment process for an arsenic sulfide containing material. The treatment process for the arsenic sulfide containing material comprises three main steps: pulpifying of theraw material, oxygen pressure acid leaching, and reducing and separating. The liquid-solid mass ratio is 3:1 to 10:1 in the pulpifying of the raw material, the pulpifying lasts for 2-4 hours at the temperature of 80-100 DEG C; the oxygen pressure acid leaching lasts for 2-4 hours at the temperature of 90-180 DEG C at the pressure of 0.1-3 MPa at the speed of 100-3000 r/min; an arsenic containing leaching agent is reduced and separated through sulfur dioxide, sodium thiosulfate or sulfite, and is then secondarily pulpified and separated to obtain a sulfite product. The arsenic content in a leaching residue is less than 5%, the recovery rate of arsenic is more than 80%; a surfactant is added in the pulpifying process, so that the oxidation reaction is more thorough; a vacuum pulpifying tankprovided with an exhaust system is used to prevent the waste gas from overflowing, and is beneficial for improving the operation environment. The technological process is short, and the treatment process has the advantages of environmental protection, economical efficiency, energy saving, and efficient utilization of resources, etc.

The invention relates to a Chuanxiongzine preparing method, comprising the steps of: using 3-hydrox-2-butanone and ammonium acetate as raw materials, adding in alcohol, charging nitrogen gas, and blending in hot bath for 5-8 h; on air or oxygen condition, blending for 12 h; adding in oxidant, and blending for 1-2 h, where the weight ratio of oxidant to 3-hydrox-2-butanone = (0.5-1):1; and filtering out the remaining oxidant; vacuum-distilling to make it. And the method has high yield. And the organic solvent utilization in the preparing course is less, beneficial to environmental protection. And the invention has advantages of low cost and simple operation.

The invention discloses a treatment method of cyanogen-containing waste residue. The method comprises the steps of (1) adjusting alkali, wherein the pH value of the leachate of the waste residue after alkali is adjusted is 10-13; (2) breaking cyanogen, feeding a chlorine-containing cyanogen-breaking reagent into a stirring reaction kettle in a stirring state; (3) pelleting, feeding slaked lime powder and calcined gypsum powder into the material obtained after the cyanogen-breaking reaction in the step (2) in a stirring state, and mixing to enable the material in the stirring reaction kettle to form uniform spherical particles; and (4) drying and curing, naturally drying the particles in the stirring reaction kettle for 1-2 days after pelleting in the step (3), and curing. According to the method, cyanogen is broken by a chlorination process under the alkaline condition, so that the cyanide removal effect is good; after the oxidation reaction of the cyanide is finished, the salinity is cured in the particles instead of entering a waste water system; during stirring, two-section frequency is applied, so that the formed particles are even in sizes; during pelleting, gypsum is fed, so that the strength of the particles is greatly improved, and the construction in a landfill is more easily carried out.

The invention relates to a low concentration formaldehyde waste gas oxidation treatment process and special equipment. A collection tower, a spray pipe component, a formaldehyde liquid circulation tank and a formaldehyde solution oxidation tank are arranged, wherein a chimney is arranged on the collection tower, the formaldehyde liquid circulation tank is arranged at the bottom of the collection tower, the spray pipe component is arranged at the upper part of the inside of the collection tower, an organic waste gas inlet pipe is arranged at the lower part of the collection part which is connected with an organic waste gas pipeline through a pipeline and a fan, and a liquid outlet is formed in the side wall of the formaldehyde liquid circulation tank. According to the low concentration formaldehyde waste gas oxidation treatment process and special equipment, by the aid of the characteristic that formaldehyde is very soluble in water, formaldehyde is absorbed by water, so that the formaldehyde waste gas concentration is reduced, waste gas standard emission is can be realized, at the same time, a formaldehyde concentration solution can be obtained after absorption, formaldehyde is decomposed into harmless carbon dioxide and water through oxidation of hydrogen peroxide, and the absorptivity of formaldehyde in industrial waste gas can be as high as 95% or above.

The invention relates to a production device for efficiently preparing trioxidized oil. The production device comprises an ozonized oil reaction tank, wherein the upper part of the ozonized oil reaction tank is provided with a feed port; the lower part of the ozonized oil reaction tank is provided with a view port and a material receiving port; the left side of the ozonized oil reaction tank is connected with a temperature controller and a cooling water pump; the cooling water pump is connected with a cooling water tank; the upper end of the ozonized oil reaction tank is connected with an automatic exhaust valve; and the automatic exhaust valve is connected with an ozonized tail gas destructor. The invention also relates to a method for efficiently preparing trioxidized oil. The method uses vegetable oil, and is characterized in that the vegetable oil is vegetable oil with high alpha-linolenic acid content and is composed of one or both of perilla oil and flaxseed oil. The method has the advantages of controllable ozone oxidization process and more thorough oxidization, implements large-scale industrial production, enhances the ozone utilization efficiency, and enhances the stability of the ozone oxidization product.

The invention discloses an oxidized corn starch adhesive and a preparation method thereof. The oxidized corn starch adhesive is prepared from the following raw materials in parts by weight: 8-30 partsof corn starch, 0.9-2.0 parts of NaOH, 1-3 parts of H2O2, 60-80 parts of water, 0.01-0.12 part of a catalyst, 0.01-0.20 part of a surfactant, 0.02-0.20 part of polyacrylamide, 0.1-2 parts of a cross-linking agent, 0.1-1 part of a diluent, 0.01-0.1 part of a defoaming agent, 0.1-5 parts of a drier and 0.01-0.5 part of a preservative. The preparation method comprises the following steps: pre-gelatinizing, oxidizing, gelatinizing, crosslinking and modifying the corn starch to obtain the oxidized corn starch adhesive; and the prepared oxidized corn starch adhesive is good in mechanical property,large in initial adhesion, high in adhesive force, high in drying speed and good in film-forming property and stability.

The invention discloses a method for deeply purifying distilled liquor by utilizing zone. The method comprises ventilating ozone to liquor steam. The invention further discloses a device for deeply purifying distilled liquor by utilizing ozone. The device comprises a distillation kettle and a condensing tower which are connected with each other, wherein an ozone adding tube I is connected to the kettle head of the distillation kettle; and a gas outlet of the ozone adding tube I is formed in the middle part of the kettle head o the distillation kettle. According to the method and the device for deeply purifying distilled liquor by utilizing ozone, the gaseous ozone and liquor steam are sufficiently mixed, so that the gas-steam mixing contact area is extremely large, and the ozone utilization rate is greatly improved; and the gas-steam mixing does not have ozone dissolving limit, so that the adding amount of the ozone can be adjusted according to the practical needs, and therefore, the purpose of deeply distilling liquor is achieved.

The invention discloses a methanol oxidation reaction device and method. The device comprises an oxidation reactor and a gasification heater. The top of the oxidation reactor is provided with an inlet A, the bottom is equipped with an outlet A, the lower part of one side wall is provided with a heat conducting oil inlet, the upper part of another side wall is equipped with a heat conducting oil outlet, tubes are disposed inside, and a pack catalyst loaded in the tubes; the top of the gasification heater is provided with an inlet B, the bottom is equipped with an outlet B, the upper of one side wall is provided with an oxidation component outlet, the lower part is provided with an oxidation component inlet, and another side wall is equipped with an upper inlet and a lower segment outlet, the inside is provided with scale equipped tubes; the inlet A is connected to the outlet B, the outlet A is connected to the oxidation component inlet, the inlet B is connected an external fan and methanol pump, the oxidation component outlet is connected to an external aqueous solution device for formaldehyde preparation by water absorption and a gas device for formaldehyde preparation by polycondensation, the upper segment inlet is in connection with the lower segment outlet, the heat conducting oil inlet is connected to an external heat conducting oil pump, and the heat conducting oil outlet is connected to an external "waste pan".

The invention relates to ink for an animal body surface marking pen and a preparation method of the ink. Each 100g of the ink comprises, by weight, 0.1-5.0g of ethacridine lactate, 0.5-3.0g of potassium permanganate, 1.0-5.0g of alkylphenol ethoxylates, 0.1-3.0g of Span-80, 5.0-10.0g of isopropanol, 1.0-15.0g of Vaseline and the balance deionized water. The ink is nonirritant to the skin, high inhair adhering performance and capable of generating marks which do not fade for a long time and has a local anti-infection effect. The preparation method is high in process operability, low in production cost, beneficial to production transformation and promising in market prospect.

The invention discloses a low-pressure catalytic oxidation reactor which comprises a reactor barrel. A light reflection flow guide barrel is arranged in the reactor barrel, a filler zone is arranged between the light reflection flow guide barrel and the reactor barrel, a water inlet pipe and a gas inlet pipe penetrate the portion, which is positioned on the lower portion of the reactor barrel, ofthe filler zone and are provided with water distributors and aerators, and the water distributors and the aerators are arranged at an opening in the bottom of the light reflection flow guide barrel. The low-pressure catalytic oxidation reactor has the advantages that wastewater and ozone can be directly fed into the light reflection flow guide barrel, the low-pressure wastewater can be fed into the light reflection flow guide barrel in a jet flow manner to be circulated in the light reflection flow guide barrel in a rotational flow manner, and can be sufficiently fused with the ozone, a drainpipe is arranged on the upper portion of the reactor barrel, the wastewater can flow out from the light reflection flow guide barrel, then sufficient reaction can be carried out on the wastewater andthe filler zone, and the wastewater can be ultimately drained from the drain pipe; the light reflection flow guide barrel is divided into a plurality of longitudinal oxidation zones by titanium dioxide catalysis plates, an ultraviolet lamp pole is arranged in the center of each oxidation zone, the catalysis plates are completely positioned in irradiation distances of ultraviolet light, the ultraviolet light can be reflected by the light reflection flow guide barrel, accordingly, illumination can be intensified, and the photocatalytic efficiency can be improved.

The invention relates to a sludge treatment reactor which comprises a kettle body which is vertically arranged and an insulating layer covering the outer side of the kettle body; a heat exchanger for preheating an oxidizing medium is arranged on the upper part inside the kettle body; a heat exchange structure for preheating sludge slurry is arranged in the middle inside the kettle body; the heat exchange structure is connected to a material inlet on the outer side of the middle of the kettle body; at least one longitudinally-arranged electric heating bar and at least one transversely-arranged stirrer are arranged on the lower part inside the kettle body; a gas inlet and an exhaust port are respectively formed in the bottom and the top of the kettle body; a material outlet and a drain outlet are also formed in the bottom of the kettle body. The sludge treatment reactor disclosed by the invention can respectively preheat the oxidizing medium and sludge material by virtue of the heat exchanger and the heat exchange structure, so that the oxidizing medium and the sludge material just entering the reactor have relatively high temperature, and thus a faster and more complete oxidizing reaction is implemented.

The invention discloses a method for carrying out deep purification on distilled liquor by utilizing ultraviolet light. The ultraviolet light is used for irradiating liquor steam. The invention further discloses a device for carrying out the deep purification on the distilled liquor by adopting the method; the device comprises a distillation kettle and a condensation tower; the distillation kettle and the condensation tower are connected with each other; and a kettle head of the distillation kettle is provided with a plurality of uniformly-distributed ultraviolet lamp tubes I. According to the method and the device disclosed by the invention, the ultraviolet light is used for irradiating the liquor steam and the contact area is large, so that the utilization rate of the ultraviolet light can be improved; and the irradiation amount of the ultraviolet light can be adjusted according to the actual requisite amount so that the aim of deeply purifying the distilled liquor is realized. The distilled liquor produced by adopting the method and the device disclosed by the invention is soft in mouth feel; and a user does not feel thirsty and headache after drinking the distilled liquor.