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

The invention discloses a plasma bottom ash and fly ash fusion treatment and metal recycling system. The plasma bottom ash and fly ash fusion treatment and metal recycling system comprises a feeding device, a two-segment type ash fusion device, a combustion chamber, a wet type temperature reduction washing device, a demister, an activated carbon material layer and an induced draft fan. The feedingdevice is connected with the two-segment type ash fusion device. The two-segment type ash fusion device is connected with the combustion chamber. The combustion chamber is connected with the wet typetemperature reduction washing device. The wet type temperature reduction washing device is connected with the demister, and the demister is connected with the activated carbon material layer. The activated carbon material layer is connected with the induced draft fan. The two-segment type ash fusion device is adopted in the plasma bottom ash and fly ash fusion treatment and metal recycling system, harmless treatment of bottom ash and fly ash is achieved, and meanwhile alkali metal and heavy metal in the bottom ash and the fly ash and other metal reduced in a fusion furnace are recycled; through the combustion chamber, it is guaranteed that combustible components in smoke and other pollutants are sufficiently removed; and through the wet type temperature reduction washing device, capturingrecycling of the alkali metal, the heavy metal and other volatile salt substances and deep purification of smoke are achieved.

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 a carbonation tower, a carbonation system and a method, comprising a tower shell, a cooling water tank, an air inlet, an air outlet, a feed port and a discharge port arranged on the tower shell, and a The stirring shaft, the motor connected to the stirring shaft, the stirring blades fixed on the stirring shaft, the inner side of the tower shell is fixed with a baffle, the carbonation system consists of a plurality of carbonation towers connected; the gas outlet of the carbonation tower is connected with a single Or the inlets of multiple carbonation towers are connected through gas connecting pipes, or the inlets of the carbonation towers are fed separately, and the gas outlets of the carbonation towers are directly exhausted. The above two connection methods are freely combined; The discharge port communicates with the feed ports of one or more carbonation towers through feed-liquid connecting pipes. The structure in the carbonation tower of the present invention is simple, no fouling and blockage, simple control, and the prepared product has coarse crystal particles, containing Chlorine is low.

The invention provides an epoxy resin dechlorinating agent as well as a preparation method and application thereof. According to the epoxy resin dechlorinating agent, 1, 5-hexadiyne and azidobenzene serve as raw materials, copper sulfate pentahydrate and sodium ascorbate serve as catalysts, an intermediate I is obtained through the click reaction of azide and alkyne, then an intermediate II is obtained through the addition reaction of alkyne and amino, and finally the epoxy resin dechlorinating agent is obtained through the polymerization reaction of end-group double bonds. The epoxy resin dechlorinating agent has a cyclic structure and has high affinity and selectivity to chloride ions, four polarized C-H bonds exist on a 1, 2, 3-triazole ring and a benzene ring, the chloride ions in epoxy resin can be stably captured, and the epoxy resin dechlorinating agent can be recycled while the chlorine content of the epoxy resin is reduced.

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 an industrial bromine refining method, where distilled bromine vapor is condensed into liquid bromine by a crude bromine condenser and free chlorine in the liquid bromine is absorbed so as to refine the crude bromine. The method is characterized in that procedures of two-step mixed absorption and two-step separation are adopted to absorb the free chlorine in the liquid bromine; and in the two-step mixed absorption procedure, the crude liquid bromine and material solution are simultaneously introduced into a static mixer and are mixed fully, so as to absorb the free chlorine in the liquid bromine by the material solution. Due to the adoption of the static mixer, the free chlorine in the crude liquid bromine can thoroughly contact the absorption solution to improve dissolution effect and achieve the purpose of high-efficiency chlorine removal. The method has the advantages of simple process, less investment, easy operation, high safety and good bromine refining effect.

The invention discloses a preparation method of environment-friendly flame-retardant plastic. The preparation method comprises the following steps: step S1, modification of octamethylcyclotetrasilazane with vinyl nitrile; step S2, preparation of an allyl benzophenone ionomer; and S3, plastic forming. The invention also provides the environment-friendly flame-retardant plastic prepared according to the preparation method of the environment-friendly flame-retardant plastic. The environment-friendly flame-retardant plastic provided by the invention is remarkable in flame-retardant effect, good in environment-friendly performance and performance stability, and excellent in comprehensive performance, aging resistance and mechanical properties.

The invention discloses an environment-friendly polyvinyl chloride uvioresistant sheath material which is characterized by comprising the following components in parts by weight: 20-30 parts of polyvinyl chloride resin, 5-10 parts of hydroxyl-terminated functionalized hyperbranched polyethylene, 6-12 parts of 2-trimethylsiloxy-4-allyloxydiphenyl ketone/phenyl 2,3,4,5,6-pentafluoro-1-vinylsulfonate/prop-2-en-1-yl 3,5-diamino-1H-pyrazole-4-carboxylate/1-allyl benzotrizole 96 copolymer, 30-40 parts of epoxy SBS resin, 0.2-0.8 part of carbazolyl modified graphene quantum dots, 0.3-0.6 part of benzophenone hydrazone, 3-6 parts of filler and 1-2 parts of coupling agent. The invention also provides a preparation method of the environment-friendly polyvinyl chloride uvioresistant sheath material.The environment-friendly polyvinyl chloride anti-ultraviolet sheath material disclosed by the invention is good in environment-friendly performance, good in weather resistance, ultraviolet aging resistance, flame retardance and high and low temperature resistance, and long in service life.

The invention discloses a method for treating hydrochloric acid wastewater by an electrolytic method and an electrolytic tank for electrolyzing the hydrochloric acid wastewater, and relates to the technical field of industrial wastewater treatment. The electrolytic tank for hydrochloric acid wastewater electrolysis comprises anode tanks and cathode tanks, the anode tanks and the cathode tanks are alternately arranged side by side in the vertical direction, and first fixing protrusions are integrally formed at the two ends of the two symmetrical outer side walls of the anode tanks and the cathode tanks correspondingly; a conductive liquid inlet, an electrolyte outlet, a conductive liquid outlet and an electrolyte inlet are respectively formed in the four first fixed bulges; the conductive liquid inlet and the electrolyte outlet are formed in the anode tank and the cathode tank, and the conductive liquid outlet and the electrolyte inlet are respectively aligned up and down. Through the arrangement of the anode tank, the cathode tank, the hydrogen outlet, the chlorine outlet, the first through groove, the second through groove, the third through groove and the fourth through groove, and the chlorine content in discharged water can be effectively reduced; meanwhile, hydrogen and chlorine after electrolysis can be recycled, and the cost is effectively saved.

The invention relates to a household garbage gasification treatment system with a composite dechlorination function. The system comprises a gasification furnace and a composite dechlorination system,wherein the composite dechlorination system comprises a coarse chlorine filtration device and a cyclone separator dechlorination device, the coarse chlorine filtration device comprises a plurality offiltering plates arranged in the gasification furnace from top to bottom and a calcium spraying port formed in the gasification furnace, one end of the filtering plate is connected with the gasification furnace, the filtering plate inclines downwards from the fixed end to the free end, the gasification furnace comprises a gasification reaction layer and a filter layer for placing the coarse chlorine filtration device, the filter layer is arranged at the top of the gasification reaction layer, and the calcium spraying port is arranged at the gasification reaction layer. According to the invention, after combustible gas is generated in a gasification furnace, the combustible gas can be directly subjected to deep dechlorination, so that high-temperature corrosion of the combustible gas to subsequent equipment is avoided so as to improve the steam parameters and the power generation efficiency and easily reduce the low-temperature heterogeneous catalytic synthesis of dioxin in the flue gascooling process.

The invention discloses a method for removing free chlorine from nickel chloride electrodeposition anolyte. The method comprises the following steps of: under the action of a forced force field, allowing nickel chloride electrodeposition anolyte to perform sufficient droplet to form droplets with the radius of 1-3 mm, and performing cross-flow contact with a certain amount of air; and according toa gas-liquid interface equilibrium concentration principle, performing the balanced reaction of free chlorine in a solution towards an analysis direction, so that the concentration of the free chlorine in the nickel chloride electrodeposition anolyte is reduced, and the purpose of removing the free chlorine from the nickel chloride electrodeposition anolyte is achieved. The concentration of the chlorine in the anolyte after the chlorine is removed is below 6ppm, the whole technological process is good in dechlorination effect, the removal rate of the free chlorine is 98.5% or above, the removal rate of the free chlorine in the anolyte is increased, the chlorine content of the anolyte is low, no chlorine smell exists, the requirement for cyclic utilization of the anolyte is met, the dechlorinated anolyte reaches the ideal state of cyclic utilization, and the purposes that the field operation environment is clean and friendly are achieved.

The invention provides a method for preparing a compound fertilizer with an adjustable nitrogen-phosphorus-potassium ratio from a fertilizer-grade phosphoric acid eutectic. The method comprises the steps of (1) conducting double decomposition reaction; (2) conducting a neutralization reaction; (3) crystallizing and refining; and (4) filtering and drying. The method has the beneficial effects that the cost of raw materials is low, zero emission of the whole process is also realized through reutilization of crystallization mother liquor and recovery of a reaction byproduct hydrogen chloride, and efficient utilization of the raw materials is realized; the reaction is segmented, so that the conversion rate of potassium chloride in the reversible reaction is improved, and the problem of crop leaf burn caused by overhigh chlorine ion content of the fertilizer is solved; and the content of nitrogen, phosphorus and potassium in the product is regulated and controlled by simply regulating and controlling the feeding ratio of the reaction raw materials, the controllable range is large, and different requirements of actual agricultural production on the fertilizer can be met.

The invention provides a dechlorinating agent and a preparation method and application thereof.The preparation method comprises the steps that firstly, in a first organic solvent, in the atmosphere that copper sulfate pentahydrate and sodium ascorbate serve as catalysts and first protective gas, a mixed solution of triacetylene amine and m-azidobenzene is dropwise added into the first organic solvent, a first contact reaction is carried out, and a second contact reaction is carried out; a first product is obtained; then, extracting and separating the first product to obtain an organic phase of the first product; drying the organic phase, filtering, and performing rotary evaporation to obtain an intermediate I; further, in a second organic solvent, under the action of sodium hydroxide as a catalyst, performing a second contact reaction on a mixed solution of the intermediate I and acrylic acid, and performing rotary evaporation to obtain an intermediate II; and further, by taking water as a solvent, controlling the intermediate II and an ammonium persulfate aqueous solution to carry out a third contact reaction in the atmosphere of a second protective gas, and carrying out rotary evaporation to obtain the dechlorinating agent. The dechlorinating agent is applied to synthesis of epoxy resin.

Products of glycidyl ether of a mono or polyhydric phenol as well as methods to manufacture the same. In some instances, the product of glycidyl ether of a mono or polyhydric phenol has an epoxy equivalent weight (“EEW”) and a hydroxyl value (“HV”), wherein the epoxy equivalent weight multiplied by the hydroxyl value (EEWxHV) is a value from 1 to 10. A process for producing the product of glycidyl ether of a mono or polyhydric phenol typically includes reacting an epihalohydrin with a mono or polyhydric phenol in the presence of a catalyst to produce a halohydrin ether; and dehalogenating the halohydrin ether to form the product of glycidyl ether of a mono or polyhydric phenol.

The invention discloses an aftertreatment method for Bixalomer. The method is simple to operate, a product has low chlorine content and low swelling rate, and the phosphate binding amount is equivalent to that of Japanese listed preparations. The method comprises the following specific steps: after the reaction is completed, reaction residues are added to purified water, and the mixture is stirred, crushed, washed and dried, wherein in the washing step, anhydrous methanol, dilute hydrochloric acid, sodium hydroxide solution and purified water are used for washing.