21results about "Chloride preparation" patented technology

The invention relates to the technical field of lithium ion batteries, in particular to a halogenated electrolyte modified low-impedance positive electrode and a preparation process and application thereof. The problem that an existing lithium ion battery positive electrode material is high in impedance is solved. According to the preparation method, the carbon-coated aluminum foil is used as the positive current collector, so that the positive current collector has relatively low contact resistance and relatively high adhesion, the charge transfer resistance and the internal resistance of the battery are reduced, and the rate capability and the cycle performance of the battery are improved; a positive active material is added, C6H12O6.H2O is adopted for carbon coating to improve the electron transmission capacity of lithium iron phosphate, titanium-vanadium co-doping synergistically improves the electron conductivity, and the electron conduction impedance is reduced; the halide solid electrolyte coats lithium iron phosphate to inhibit side reaction and reduce interface impedance; carbon nano tube coating inhibits particle aggregation and reduces charge transfer impedance; and the modified conductive agent and the modified binder are added, so that the lithium ion battery has higher cycling stability, electrochemical activity and lower impedance.

The embodiment of the invention relates to the field of separation by using a physical or chemical method, in particular to chloride molten salt purification equipment and a purification method. The chloride molten salt purification equipment comprises a containing part maintaining assembly, a purification furnace body, a purification furnace cover body, a furnace cover movement mechanism and a purification moving assembly. The accommodating part holding assembly is used for holding a plurality of molten salt accommodating parts; the purification furnace cover body is used for opening or closing a top opening of the purification furnace body and forms a reaction space together with the purification furnace body; the furnace cover movement mechanism is used for driving the purification furnace cover body to lift and rotate, so that the top opening is completely opened or closed; the purification moving assembly is used for driving the containing part maintaining assembly to move in the reaction space, and when the top opening is completely opened, the purification moving assembly drives the containing part maintaining assembly to move to protrude out of the top opening. According to the chloride molten salt purification equipment provided by the embodiment of the invention, the discharging efficiency and the feeding efficiency of the chloride molten salt after the chloride molten salt is purified can be improved.

Process and installation for the synthesis of a nuclear fuel salt by chlorination of one or more solid metal oxides MxOy(solid) using a chlorinating agent enriched in 37Cl, with M selected from plutonium, uranium, magnesium, americium, thorium, curium, aluminium and sodium, at least one of said metal oxides containing a fissile element, the chlorination reaction taking place in a three-phase mixer-reactor (2) or in a two-phase solid / gas reactor receiving said metal oxide(s), optionally a liquid salt (NaCl), and a reactive gas mixture comprising the enriched chlorinating agent and a carrier gas (G).The gaseous head of the chlorination reaction is recovered at the outlet of the reactor, and the chlorinated compounds it contains are isolated using a first series of chlorinated compound traps (5, 7, 9) operating by selective adsorption, each of said traps being configured to capture a chlorinated compound to the exclusion of non-chlorinated compounds present in said gaseous head.

The invention is in the field of recycling plastic material. In particular, the invention is directed to a method for dechlorination of a chlorine-containing polymer comprised in plastic material using superheating. The invention is further directed to a dechlorinated polymer obtainable by the method. The method is performed in water, with a pH of at most 4 during the method.

The application relates to the technical field of lithium ion batteries, in particular to a halide electrolyte modified low-impedance positive electrode and a preparation process and application thereof; the existing lithium ion battery has the problem of high impedance of the positive electrode material; the preparation method uses carbon-coated aluminum foil as the positive electrode current collector, has low contact impedance and high adhesion, reduces the charge transfer resistance and the battery internal resistance, and improves the rate performance and the cycle performance of the battery; the positive electrode active material is added, C6H 12 O6*H2O is used for carbon coating to improve the electronic transmission capacity of lithium iron phosphate, titanium-vanadium co-doping is used for synergistically improving the electronic conductivity and reducing the electronic conduction impedance; halide solid electrolyte coating lithium iron phosphate inhibits the side reaction and reduces the interface impedance; carbon nanotube coating inhibits particle agglomeration and reduces the charge transfer impedance; the modified conductive agent and the modified binder are added, so that the lithium ion battery has higher cycle stability, higher electrochemical activity and lower impedance.

The embodiment of the invention relates to the field of separation by using a physical or chemical method, in particular to chloride molten salt purification equipment and a chloride molten salt purification method. The chloride molten salt purification equipment comprises a containing part maintaining assembly, an oxygen supply assembly, a purification furnace body and a purification moving assembly. The accommodating part holding assembly is used for holding a plurality of molten salt accommodating parts; the oxygen supply assembly is used for supplying oxygen to the molten salt containing pieces and comprises a plurality of oxygen supply pipe fittings; the purification furnace body is arranged to form a reaction space capable of adjusting the temperature and containing the fused salt containing part, and oxygen supply through holes allowing the multiple oxygen supply pipe fittings to enter the reaction space are formed in the purification furnace body; and the purification moving assembly is used for enabling the plurality of fused salt accommodating pieces to be aligned with the plurality of oxygen supply pipe fittings respectively and driving the accommodating piece keeping assembly to move in the reaction space. The chloride molten salt purification equipment provided by the embodiment of the invention is beneficial to improving the purification efficiency of the chloride molten salt.

Method to separate at least a light fraction comprising low-density plastics having a density lower than water from plastic waste using superheating in water. The method is further based on efficient phase separation between different plastic and at least partial melting of the low-density plastics.

The invention discloses a halide nano-material, a preparation method and an application in a solid-state battery, and the preparation method comprises the following steps: carrying out wet ball-milling synthesis on a halide raw material, drying, carrying out three-stage gradient heating control in an inert atmosphere, cooling, crushing and screening to obtain the size-controllable halide nano-material, the specific three-stage gradient heating control is as follows: the first heating stage is a low-temperature desorption stage, and the temperature is increased from room temperature to 120-170 DEG C; the second heating stage is a medium-temperature crystallization stage, and the temperature is increased from 120-170 DEG C to 200-220 DEG C; and the third heating stage is a high-temperature densification stage, and the temperature is increased from 200-220 DEG C to 250-300 DEG C. According to the invention, the particle size change is substantially controllable, finally the beneficial effects that the particle size D50 is less than or equal to 0.9 mu m and the deviation is less than or equal to 5% are realized, the problem of high particle size dispersity of the existing synthesis method is overcome, the morphology and dispersity of the nano material are improved, the particle bulk density is increased, the interface contact resistance is reduced, and the preparation method is simple and convenient. The problem that the macroscopic particle interface compatibility is poor is solved.

The embodiment of the invention relates to the field of separation by utilizing a physical or chemical method, in particular to purification equipment for removing impurity components in chloride molten salt and a method for removing the impurity components in the chloride molten salt. The purification equipment comprises a purification furnace body, an oxygen supply assembly, a tail gas exhaust part and a purification moving assembly. The purification furnace body forms a first reaction space and a second reaction space which are used for accommodating the molten salt accommodating piece and are communicated with each other, and the temperatures of the first reaction space and the second reaction space can be adjusted respectively; the oxygen supply assembly is used for supplying oxygen to the molten salt containing part so as to remove lanthanide chloride in the chloride molten salt; the tail gas discharge part is used for discharging chlorine gas to the outside; the purification moving assembly is used for driving the fused salt containing piece to move in the first reaction space and the second reaction space, and the oxygen providing assembly can provide oxygen for the fused salt containing piece. According to the purification equipment provided by the embodiment of the invention, the efficiency of purifying the chloride fused salt can be improved.

The invention relates to a method and a facility for synthesizing a nuclear fuel salt via chlorination of one or more solid metal oxides MxOy(solid) by means of a chlorinating agent containing CCl4(gas) enriched in 37Cl, wherein M is selected from among plutonium, uranium, magnesium, americium, thorium, curium, aluminium and sodium, at least one of the metal oxides containing a fissile element, the chlorination reaction taking place in a three-phase mixer-reactor (2) or in a two-phase solid / gas reactor receiving the metal oxide(s), optionally a liquid salt (NaCl), and a reactive gas mixture comprising the enriched chlorinating agent and a carrier gas (G). The gaseous headspace from the chlorination reaction is recovered at the outlet of the reactor, and the chlorinated compounds contained therein are isolated using a first series of chlorinated-compound traps (5, 7, 9) operating by selective adsorption, each of the traps being configured to capture a chlorinated compound to the exclusion of non-chlorinated compounds present in the gaseous headspace.

The invention discloses a gradient separation and recovery method for halogen in combustion tail gas, and belongs to the technical field of environmental protection. The method comprises the following steps: spraying combustion tail gas introduced into a spraying tower by utilizing spraying liquid containing alkaline earth metal ions, reacting calcium ions in the spraying liquid with hydrogen fluoride to generate alkaline earth metal fluoride precipitate, and filtering to separate calcium chloride precipitate and tail gas absorption liquid; the tail gas absorption liquid is conveyed into the electrochemical treatment tank for electrochemical treatment, and bromide ions in the tail gas absorption liquid are oxidized into bromate ions, so that chloride and bromate in reaction effluent can be separated by using a nanofiltration membrane in subsequent steps; the halogen is separated and recycled from the tail gas through an integrated process of spraying, electrochemical treatment and membrane separation, so that the integration of pollution reduction and recycling is realized, the waste gas treatment process is simplified, the waste gas treatment cost is favorably reduced, and the conversion from the halogen pollution attribute to the resource attribute is innovatively realized.

This invention discloses a method for the cascade separation and recovery of halogens from combustion exhaust gas, belonging to the field of environmental protection technology. This invention utilizes a spray liquid containing alkaline earth metal ions to treat the combustion exhaust gas fed into a spray tower. Calcium ions in the spray liquid react with hydrogen fluoride to form alkaline earth metal fluoride precipitates. The alkaline earth metal fluoride precipitates and exhaust gas absorbent are separated by filtration. The exhaust gas absorbent is then transported to an electrochemical treatment tank for electrochemical treatment, oxidizing bromide ions in the absorbent to bromate ions. This allows for subsequent separation of chlorides and bromates in the reaction water using a nanofiltration membrane. This invention, through an integrated process of "spraying + electrochemical treatment + membrane separation," separates and recovers halogens from exhaust gas, achieving integrated pollution reduction and reuse, simplifying the waste gas treatment process, reducing waste gas treatment costs, and innovatively transforming halogens from a pollution resource.

The invention discloses a trichlorosilane synthesis gas scrubbing method and control system applicable to high and low loads, belonging to the technical field of trichlorosilane synthesis process. Synthesis gas discharged from the tops of at least two trichlorosilane synthesis furnaces is sent to a scrubbing unit for scrubbing and then sent to a condenser for treatment. The non-condensable gas obtained after the condensation treatment is sent to a regenerated hydrogen system; the liquid phase obtained after the condensation treatment is collected in a product liquid storage tank; the scrubbing unit comprises a large scrubbing tower and a small scrubbing tower connected in parallel. When the scrubbing unit is in operation, either the large scrubbing tower or the small scrubbing tower is selectively opened. The processing capacity of the large scrubbing tower can meet the scrubbing of gas generated by all trichlorosilane synthesis furnaces connected thereto in simultaneous operation. The invention solves the problem in the prior art that high-temperature synthesis gas discharged from the tops of multiple trichlorosilane synthesis furnaces enters a scrubbing tower for scrubbing, resulting in a mismatch between the actual processing capacity of the scrubbing tower and the designed processing capacity of the equipment, poor scrubbing effect, and excessively high content of metal impurities in the obtained product liquid.

The invention relates to a method for obtaining lithium chlorides and optionally other alkali metal chlorides from spodumene, comprising the steps of: a) preparation of a raw material mixture by mixing spodumene, a compound containing alkaline earth metals, and a chlorinating agent, wherein the weight ratio of alkaline earth metal oxides to SiO2 in the raw material mixture is within the range of 0.8:1 to 6:1, and wherein the amount of the chlorinating agent is such that the molar ratio of chlorine in the chlorinating agent to alkali metals contained in the raw material mixture is within the range 0.8:1 to 1.5:1; b) a chlorination reaction in the raw material mixture carried out at a temperature within the range 600 to 850°C for 20 to 120 minutes in a kiln or for up to 60 seconds in a cyclone device, preferably at a minimum possible gas flow velocity in the device / kiln; or a chlorination reaction in the raw material mixture carried out by mechanochemical activation in a milling device for 30 to 180 minutes; wherein the chlorination reaction yields a reacted raw material mixture; c) a step of volatilization of alkali metal chlorides from the reacted raw material mixture at the temperature range of 900°C to 1 600°C, wherein the temperature of the reacted raw material mixture is maintained below the melting point of the reacted raw material mixture and the temperature of kiln exhaust gases is maintained above 600°C, preferably above 750°C, at gas flow velocity in the device / kiln being within the range from 2 to 40 m / s, preferably within the range of 5 to 25 m / s, for 15 to 150 minutes, preferably for 20 to 60 minutes.

The embodiment of the invention relates to the field of separation by using a physical or chemical method, in particular to a method for removing impurity components in chloride molten salt and chloride molten salt purification equipment, and the purification equipment comprises a first reaction space and a second reaction space. The method comprises the following steps: S10, putting a molten salt containing part containing chloride molten salt into a first reaction space; s20, the first reaction space is heated, and oxygen is supplied into the fused salt containing part; s30, heating the temperature of the second reaction space to be higher than the melting point of the chloride molten salt; s40, moving the molten salt accommodating part to the second reaction space, and enabling the temperature of the first reaction space to be lower than the melting point of the chloride molten salt; and S50, slowly moving the molten salt accommodating part from the second reaction space to the first reaction space, so that the chloride molten salt entering the first reaction space in the molten salt accommodating part is gradually solidified. According to the method provided by the embodiment of the invention, the efficiency of purifying the chloride molten salt can be improved.

The embodiment of the invention relates to the field of separation by using a physical or chemical method, in particular to molten salt purification equipment capable of injecting oxygen and a method for removing impurity components in chloride molten salt. The fused salt purification equipment comprises an oxygen supply assembly for supplying oxygen to the fused salt containing part, a purification furnace body, a tail gas discharge part for discharging chlorine in the reaction space and a sealing guide assembly. The oxygen supply assembly is used for supplying oxygen to a molten salt containing part used for containing chloride molten salt and comprises an oxygen supply pipe fitting and an oxygen supply lifting driving part used for driving the oxygen supply pipe fitting to do lifting motion, a reaction space is formed in the purification furnace body, and the oxygen supply pipe fitting enters the reaction space through an oxygen supply through hole; the sealing guide assembly is used for dynamically sealing the oxygen supply pipe fitting and the oxygen supply through hole, reducing friction force borne by the oxygen supply pipe fitting in the lifting process and guiding the oxygen supply pipe fitting. The molten salt purification equipment provided by the embodiment of the invention is beneficial to improving the efficiency of removing lanthanide chloride in chloride molten salt.

Method to separate at least a light fraction comprising low-density plastics having a density lower than water from plastic waste using superheating in water. The method is further based on efficient phase separation between different plastic and at least partial melting of the low-density plastics.

Production of nanoparticulate alkali and alkaline earth chloride aerosols by converting their solution in polar organic solvents into nanoparticulate salt aerosols through combustion with a liquid fuel burner.

The invention belongs to the technical field of medicine synthesis. The invention firstly provides a preparation method of a monochloramine organic solution. On the other hand, the invention provides application of the preparation method in amination reaction or preparation of a compound 4. On the other hand, the invention provides a preparation method of the compound 4. The invention also provides a preparation method of the compounds 2 and 3. The whole process route is short, the cost is low, less three wastes are generated, the post-treatment is simple, the yield is high, the product quality is excellent, and the method is suitable for industrial production.

The embodiment of the invention relates to the field of separation by using a physical or chemical method, in particular to molten salt purification equipment and a method for removing impurity components in chloride molten salt. The fused salt purification equipment comprises a containing part maintaining assembly, a purification furnace body, an oxygen supply assembly, a tail gas exhaust part and a purification moving assembly. The accommodating part holding assembly is used for holding a plurality of molten salt accommodating parts; the purification furnace body forms a reaction space and a tail gas discharge channel; the oxygen supply assembly is used for supplying oxygen to the molten salt containing part so as to remove lanthanide chloride in the chloride molten salt; the tail gas discharge part is used for discharging chlorine gas entering the tail gas discharge channel to the outside; the purification moving assembly is arranged to be capable of supporting and positioning the containing part maintaining assembly and can drive the containing part maintaining assembly to move in the reaction space, so that the oxygen supply assembly can supply oxygen to the fused salt containing part. The molten salt purification equipment provided by the embodiment of the invention is beneficial to improving the purification efficiency of chloride molten salt.