32results about How to "Low chlorine content" patented technology

The invention discloses a method for preparing high-activity electroplating grade copper oxide from basic cupric carbonate. According to the method, pure copper, liquid nitrogen and high-purity carbon dioxide are taken as materials to prepare the high-purity basic cupric carbonate through a centrifugal film evaporator or a scraper reaction kettle; the problem of impurities such as chlorine which may be caused by production of the basic cupric carbonate material by the traditional method is avoided; the purity of the basic cupric carbonate is improved; the high-purity low-chorine electroplating grade copper oxide is burnt from the high-purity basic cupric carbonate through a rotary kiln; the defects of inactivation, a plurality of impurities, large labor intensity, un-continuous production, long period, high energy consumption, large cost and the like due to the fact that the basic cupric carbonate at the low-temperature part is not burnt thoroughly and the content is not enough when a pushed slab kiln statically burns while copper oxide at the high-temperature part is burnt to death are overcome; the product activity is ensured; and the method is high in product quality, less in energy consumption, small in cost and more environment-friendly.

A novel binder resin which attains good adhesion to various substrates such as polyolefin resins, vinyl chloride resins, polycarbonate resins, polyethylene terephthalate resins, acrylonitrile / butadiene / styrene resins, and nylon resins even by low-temperature baking and is excellent in solvent solubility. Namely, a chlorinated propylene random copolymer produced by subjecting a propylene random copolymer which is obtained by copolymerizing propylene with other alpha-olefin by using a metallocene catalyst as the polymerization catalyst and which has a melting point (Tm) of less than 115 DEG C as determined with a differential scanning calorimeter (DSC) to degradation by heat preferably at a temperature ranging from the melting point of the copolymer to 350 DEG C and chlorination successively.

The invention discloses a method for continuously preparing high-purity low-chloride electroplating copper oxide. According to the method, pure copper, liquid ammonia and high-purity carbon dioxide are taken as raw materials for producing high-purity basic cupric carbonate, so that the problem of impurities such as chlorine and the like in the conventional method for producing the raw materials of the basic cupric carbonate is avoided and the purity of the basic cupric carbonate is improved; and the high-purity basic cupric carbonate is calcined through a rotary electric furnace without scale on the inner wall for continuously preparing the electroplating copper oxide, so that the shortcomings of low content of the basic cupric carbonate due to no complete combustion of the basic cupric carbonate at the low-temperature part and complete combustion of the copper oxide at the high-temperature part in the static calcining process of a pushed slab kiln, loss of activity, high impurity content, high labor intensity, discontinuity in production, long cycle, high energy consumption, high cost and the like are overcome, the product activity is guaranteed, the product quality is high, the energy consumption is low, the cost is low, and the environment is more protected.

The invention discloses a preparation method of an anti-aging plastic material. The preparation method is characterized by comprising the following steps: step S1, preparing 5-allyl-3-methoxysalicylic acid methyl ester / 2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate / 2-acrylamido-2-methylpropanesulfonic acid / acrylonitrile / lambda-cyhalothric acid copolymer; step S2, preparing a benzoguanamine / 2,5-bis(1,2,4-triazol-1-yl)terephthalic acid polycondensation polymer; and step S3, forming the plastic material. The invention also provides the anti-aging plastic material prepared according to the preparation method of the anti-aging plastic material. The anti-aging plastic material provided by the invention is good in comprehensive performance, good in performance stability and excellent in anti-aging performance, weather resistance and mechanical performance.

The invention discloses a rotary electric furnace and a method for preparing high-activity electro-plated copper oxide by using the rotary electric furnace. At least one percussion device is arranged on the outer wall of the furnace barrel of the rotary electric furnace, wherein the furnace barrel percussion device comprises a hollow cavity and a sphere; one end of the hollow cavity is open and the other end of the hollow cavity is closed, wherein the opening end is fixed on the outer wall of the furnace barrel; the sphere is movably arranged in the hollow cavity; the sphere moves up and down in the hollow cavity to form a clearance percussion status with the outer wall of the furnace barrel during the rotary process of the furnace barrel; the method for preparing the high-activity electro-plated copper oxide comprises the following steps of: preparing high-purity alkali type copper carbonate by adopting pure copper, liquid ammonia and high-purity carbon dioxide as materials; and obtaining the high-activity electro-plated copper oxide through roasting in the rotary electric furnace. According to the rotary electric furnace and the method for preparing the high-activity electro-plated copper oxide by using the rotary electric furnace, the defect that the low-temperature part is insufficient due to insufficient burning and the high-temperature part is burnt through during a static roasting process of the pushed slab kiln is overcome; moreover, the defects such as inactivity, a plurality of impurities, discontinuous production, long period, high energy consumption, high cost and the like are overcome, so that the activity of the product is ensured. Besides, the product quality is high, the energy consumption is less, the cost is low and the environment-friendliness is better.

A method of pyrolyzing high-protein algae and waste plastics with gas-solid two-phase mixed chlorine removal to produce charcoal. (1) Separately crush waste plastics and high-protein algae biomass, grind them into granules, and put them into two pyrolysis devices after drying (2) Introduce carrier gas into the pyrolysis device where the waste plastic is located, and set the reaction flow rate; (3) Set the temperature of the two pyrolysis devices respectively, the first pyrolysis of waste plastic will generate HCl gas, high protein Algae biomass is pyrolyzed to produce algae biochar, and HCl gas and carrier gas are passed into the pyrolysis device where the high-protein algae biomass is located, and HCl gas reacts with algae biochar; (4) Adjust the location of waste plastics The temperature of the pyrolysis device, the second pyrolysis of waste plastics produces biochar. The invention adopts the segmented pyrolysis method to maximize the removal of the chlorine element in the waste plastic in the form of HCl, effectively removes the toxic substance chlorine in the waste plastic, and solves the problem of "white pollution".

The invention discloses an automatic dispatch control system and a method of a salty prevention pumping station, wherein the system is composed of a real-time monitoring unit, a salinity forecasting unit, a central control chamber and an actuating mechanism and the like; the real-time monitoring unit is composed of a plurality of groups of river surface monitors, a reservoir liquidometer, a gate salinity meter and a plurality of GPRS (General Packet Radio Service) modules; the salinity forecasting unit is composed of a first computer and a fourth GPRS module, which are connected through an RS232 serial port bus, the central control chamber is composed of a second computer and a fifth GPRS module, which are connected through an RS232 serial port bus, and the actuating mechanism is composed of a gate, a plurality of water pumps and a plurality of PLCs (Programmable Logic Controller); and the automatic dispatch control system disclosed by the invention can be used for effectively avoiding the salt water from entering water works and guaranteeing the chlorosity of the water of the water works to be minimum under the harsh condition of low water combined with spring tide.

The invention discloses a plasma bottom ash, fly ash melting treatment and metal recycling system, which includes a feeding device, a two-stage ash melting device, a combustion chamber, a wet-type temperature reduction washing device, a mist eliminator, an activated carbon material layer and induced draft fan; the feeding device is connected to the two-stage ash melting device; the two-stage ash melting device is connected to the combustion chamber; the combustion chamber is connected to the wet desuperheating washing device; the wet desuperheating washing device is connected to the demister, The demister is connected with the activated carbon material layer; the activated carbon material layer is connected with the induced draft fan. The invention adopts a two-stage ash melting device to realize the harmless treatment of bottom ash and fly ash, and at the same time recover the basic metals, heavy metals and other metals reduced in the melting furnace respectively in the bottom ash and fly ash; the combustion chamber It ensures the full removal of pollutants such as combustible components in the flue gas; the wet desuperheating scrubber realizes the capture and recovery of volatile salts such as alkaline metals and heavy metals and the deep purification of the flue gas.

The invention discloses a method for producing tapping paraffin serving as polyurethane foam crack filler.The method comprises the following steps of adding heavy liquid wax into a reaction kettle; introducing chlorine into the reaction kettle, and controlling the reaction temperature; after the heavy liquid wax reacts with the chlorine for a while, detecting the density of chlorinated paraffin, and then blowing off hydrogen chloride gas; after the hydrogen chloride gas is blown off, detecting the acid value, and then adding compound heat stabilizer, so that the tapping paraffin is obtained.The method for producing the tapping paraffin has the advantages that the temperature of the reaction conducted between the heavy liquid wax and chlorine and the introducing amount of chlorine are controlled, so that low-carbon-chain constituents maintain low chlorine content, high-carbon-chain constituents have high chlorine content, chlorine elements are uniformly distributed on the heavy liquid wax, the distribution mode is beneficial to foam hole balance of the polyurethane foam crack filler, in addition, foam holes can emerge to be of a netted structure, and untoward effects such as enlarged foam holes and messy foam cannot be caused.

The invention relates to 1,2-epoxy-4-vinylcyclohexane. 1,2-epoxy-4-vinylcyclohexane is prepared from the following raw materials in percentage by mass: 12%-14% of 4-vinyl-1-cyclohexene, 40%-45% of toluene, 17%-19% of acetic anhydride, 2%-4% of sodium acetate and 21%-23% of 35% hydrogen peroxide. The invention further relates to a preparation method of 1,2-epoxy-4-vinylcyclohexane. Prepared 1,2-epoxy-4-vinylcyclohexane has high yield and selectivity, and purity of a reaction product is improved; besides, 1,2-epoxy-4-vinylcyclohexane has low chlorine content and has no heavy metal residues, andgelation time of the product is short.

The invention discloses a preparation method of bisalom, which is simple in operation, low in chlorine content, low in swelling rate, equivalent in phosphate binding amount to the preparation on the market in Japan, avoids amplification effect, and is especially suitable for industrial production. The specific steps are: dissolve N,N,N',N'-tetrakis(3-aminopropyl)-1,4-butanediamine in purified water, add epichlorohydrin dropwise, and control the temperature not to exceed 25°C. After the dropwise addition, heat up to 80°C, react for 9 to 10 hours, then cool down to room temperature, add the reaction residue into purified water, stir, pulverize, wash, and dry; among them, N,N,N',N'‑ The substance ratio of tetrakis(3-aminopropyl)-1,4-butanediamine to epichlorohydrin is 1:2.1-2.3.

The invention discloses a sub-step flotation and detoxification method for incineration fly ash of medical garbage. The sub-step flotation and detoxification method is characterized in that coseparation of dioxin and a carbon component is realized by first-step flotation, so that the toxicity of organic pollutants including the dioxin and the like in the fly ash is reduced; meanwhile, soluble heavy metal is eluted; second-step flotation of tail slurry is subjected to a sulfide precipitation flotation method and heavy metal including Pb, Zn and the like is removed and recycled, so that the harms of the heavy metal are eliminated. Separated final products mainly comprise enriched carbon, residual ash, heavy metal sediment salt and the like, wherein the enriched carbon rich in the dioxin is conveyed into a garbage incinerator secondary incineration chamber to be incinerated, so that the high-temperature decomposition of the dioxin is realized by a low cost; the volume and the toxicity of the residual ash are greatly reduced and the residual ash is directly conveyed into a municipal solid waste landfill to be safely treated or reutilized, so that the subsequent treatment cost is greatly reduced; the heavy metal in the fly ash is leached with an acid and vulcanized and then is precipitated, floated and recycled, so that a plurality of purposes are realized. The method can realize harmless treatment and resource utilization of the incineration fly ash of the medical garbage under environment-friendly and low-cost conditions.

The invention discloses a tank type heat exchanger. The tank type heat exchanger comprises a tank and a water purifier, wherein the water purifier is connected with the tank through a water inlet pipeline, a first flowmeter is arranged on the water inlet pipeline, a heater is arranged on the tank and is located on the outer side of the tank, a heating medium inlet pipe and a heating medium outlet pipe are arranged on the heater, a second flowmeter is arranged on the heating medium outlet pipe, a hot water inlet is formed in the tank and is connected with the water inlet pipeline through a pipeline, and the heater is connected to the upper portion of the pipeline. According to the tank type heat exchanger, the flowmeters are arranged on the water inlet pipeline and the heating medium outlet pipe, in this way, adjustment can be conducted according to requirements during production, waste of raw materials is avoided, and the working performance of a machine can be maintained easily; the water purifier is arranged in front of the water inlet pipeline, in this way, the chlorine content of tap water entering equipment is extremely low, the salt content of tap water entering the equipment is extremely low, corrosion of the pipelines is reduced to the maximum, the situation that scale formation happens in the pipelines due to high salt content of water is avoided, and the service life of the equipment is effectively prolonged.