171 results about "Chlorine gas" patented technology

The present invention provides a method of producing hydrochloric acid, comprising reacting high-temperature gaseous chlorine and water vapour in a carbon-free reverse Deacon reaction (RDR) at a temperature of from about 450 to about 750 °Celsius to produce a mixture of gases comprising hydrogen chloride and oxygen. The chlorine is produced by fusing and electrolysing sodium or magnesium chloride in solid phase. The water vapour comes from thermally decomposing a hydroxide of at least one of calcium, magnesium and iron in the absence of oxygen to produce the water vapour without any admixture of oxygen (e.g., from atmospheric air). The mixture of gases produced by the RDR is immediately contacted with liquid water to dissolve the hydrogen chloride therein, thereby producing hydrochloric acid and a stream of tail gases. Heat is extracted from the hydrochloric acid to maintain its temperature substantially constant until the stream of tail gases is no longer in contact therewith. Thus the chlorine and water vapour are both supplied to the RDR at high purity and require little, if any, preheating. Heat extracted from contacting the mixture of gases with liquid water may be used to keep the RDR within its range of operating temperatures. Oxygen can be separated from the stream of tail gases, and the oxygen-depleted stream can be recycled back to the RDR to give a high percentage conversion of chlorine to hydrogen chloride. The RDR may be uncatalysed and kept within its operating temperature range by radio-frequency volumetric heating in at least one of the IEEE Ku-, K- and Ka-bands. The invention also provides a corresponding apparatus (1h) for producing hydrochloric acid, comprising an electrolytic cell (10) for the electrolysis, a gas-tight kiln (20) for the thermal decomposition, a gas-phase reactor (30) for the RDR, and an absorber (40) for dissolving the hydrogen chloride in the liquid water. The apparatus (1h) may further comprise a separator (80) for separating the stream of tail gases into the oxygen-depleted stream and a stream of oxygen, which may be fed to a steelmaking apparatus (90), for example. The liquid water for dissolving the hydrogen chloride can come from condensing water vapour obtained by drying an aqueous solution of sodium or magnesium chloride or of sodium hydroxide. The apparatus (1h) may therefore also comprise a dryer (60) for drying this aqueous solution, and a condenser (70) for condensing the water vapour thus obtained. Sodium chloride or magnesium chloride in solid phase derived from drying the aqueous solution may be recycled back to the electrolytic cell (10). Electricity for the electrolysis can come from a renewable resource. At least some of the heat for the thermal decomposition may come from the liquid metal which is a co-product of the electrolysis. The invention is therefore highly energy efficient and requires little, if any, extra energy, apart from the electricity required for the electrolysis. The invention also uses commonly available ingredients and produces no greenhouse gases.

The utility model discloses an easy dismounting chlorine gas supply filter unit relates to chlorine gas supply filter technical field, including filter box and positioning assembly, the front and back both sides of filter box are provided with filter assembly, positioning assembly sets up in the upper and lower both sides of filter box, and positioning assembly includes side plate, central shaft, pressing plate, guide portion and push rod. That easy dismounting chlorine gas supply filter unit through the setting of positioning assembly, when maintaining, need not with the aid of other tools, only need to push push rod to make pressing plate with central shaft as center rotation, remove from the outside of the sealing plate, at this time, pull handle can take out multiple filter plates from filter box simultaneously, thereby need not single one by one dismount, be favorable to improve the convenience when maintaining, and when installing, also only need to push back push rod, at this time, guide portion will play the guiding role when pressing plate moves to sealing plate, thereby drive pressing plate to compress sealant strip, seal between sealing plate and filter box.

The present application relates to a kind of catalyst for hydrogen chloride oxidation preparation chlorine and its preparation method and application.The preparation method includes: after carrier substrate, metal tantalum powder, binder solution are mixed, extrusion forming is obtained green body, the green body is prepared composite carrier by calcination, the mass fraction of metal tantalum powder in the composite carrier is 5%-30%;Inorganic salt containing catalytically active element is made into solution and is placed in the composite carrier, and after drying, pre-product is obtained, and the pre-product is prepared catalyst by calcination.The preparation method described in the present application prepares high thermal conductivity composite carrier, not only effectively improves the heat conduction efficiency of catalyst, guarantees the effective activity of catalyst, but also guarantees the stability of composite carrier, thereby effectively prolongs the life of catalyst.

This invention provides a liquid chlorine storage material for separating and storing chlorine from chlorine-containing gases. The material is a mixed ionic liquid composed of at least one organic salt and one additive, wherein the organic salt is selected from one or more quaternary ammonium salts, and the additive is a metal chloride. The chlorine storage material is liquid at 25°C and a pressure of 1000±100 hPa. This invention provides a storage medium with a high chlorine storage rate, high chlorine storage density, simple release conditions, and high chlorine purity. This storage medium effectively reduces the saturated vapor pressure of chlorine at room temperature, improving the safety of chlorine transportation and use.

A method may comprise producing liquid sodium and chlorine gas by electrolysis. The liquid sodium may be redox reacted with iron and / or manganese oxide in an ore to produce iron and / or manganese and s

This utility model discloses a chlorine reaction experimental teaching device in the field of experimental equipment technology. It includes a transparent frame, a reaction assembly mounted on the surface of the transparent frame for carrying out the chlorine reaction, and a heating assembly mounted on the surface of the transparent frame for providing a heat source. The heating assembly includes a heating element, a lithium battery, and a power controller. The lithium battery and power controller are both mounted on the back of the transparent frame and are electrically connected. The heating element is mounted on the front of the transparent frame and includes a thick-walled ground glass test tube, an MCH ceramic heating rod, and a rubber stopper. The rubber stopper is fitted over the opening of the thick-walled ground glass test tube, and the bottom end of the MCH ceramic heating rod is sealed through the rubber stopper and placed inside the thick-walled ground glass test tube. The MCH ceramic heating rod is electrically connected to the power controller. This utility model solves the problems of a lack of integrated experimental devices on the market, safety hazards in the heating method for the chlorine-metal reaction in experiments, difficulty in accurately controlling temperature, chlorine leakage, and environmental pollution.

A method for coupling energy storage and hydrogen production for lithium extraction from brine, as well as a device and application thereof, the method comprising the following steps: providing an electrolytic device separated by an inorganic solid lithium ion sieve membrane into an anode chamber and a cathode chamber, arranging an energy storage electrode in the anode chamber and a hydrogen evolution electrode in the cathode chamber, introducing lithium-containing brine into the anode chamber and a recovery solution into the cathode chamber, and connecting a power supply to make lithium ions migrate from the anode chamber to the cathode chamber through the lithium ion sieve membrane, while the anode undergoes an oxidation reaction of energy storage material to convert electrical energy into chemical energy storage, and the cathode undergoes a hydrogen evolution reaction to generate hydrogen. The present application controls the anode electrochemical reaction path to replace the traditional oxygen evolution and chlorine evolution reaction with energy storage reaction, while achieving selective extraction of lithium ions, storing electrical energy in the form of chemical energy in the energy storage electrode, and simultaneously producing hydrogen in the cathode, effectively avoiding the generation of toxic chlorine gas, reducing the energy consumption of lithium extraction, and realizing the multiple coupling of lithium extraction, energy storage and hydrogen production processes.

This invention discloses a method for preparing low-temperature resistant chlorinated polyethylene, belonging to the technical field of chlorinated polyethylene preparation. The preparation method includes the following steps: raw material preparation, chlorination reaction, and post-treatment. In the chlorination reaction, deionized water, high-density polyethylene powder, a swelling agent, and a first dispersant are added to a reaction vessel for swelling. Alkaline earth metal oxides are added, and the mixture is stirred at room temperature. A second dispersant, emulsifier, and initiator are added, and the mixture is stirred again. An anti-adhesion agent is added, the reaction vessel is sealed, and the temperature is raised to 75-80°C. A vacuum is drawn to a pressure of -0.04 MPa to -0.03 MPa, and a first chlorine gas is introduced. The temperature is raised to 110-115°C, and a second chlorine gas is introduced. The temperature is raised to 134-136°C, and a third chlorine gas is introduced. The chlorine gas introduction is stopped, and the mixture is cooled to room temperature. The chlorinated polyethylene prepared by this invention exhibits good low-temperature resistance, low colored particle number and ash content, high tensile strength, and low Shore hardness.

This invention relates to the field of semiconductor technology, specifically disclosing a gallium oxide epitaxial wafer and its preparation method. The preparation method of the gallium oxide epitaxial wafer includes the following steps: S1, placing a (011)-plane gallium oxide substrate in a reaction chamber, introducing a carrier gas, and then introducing oxygen, chlorine, and hydrogen for a first growth; S2, introducing oxygen and hydrogen chloride for a second growth on the first-grown gallium oxide substrate to obtain a gallium oxide epitaxial wafer; wherein, in S1, the flow rate ratio of oxygen to chlorine is (2~3):1; in S2, the flow rate of oxygen is 200~400 sccm, and the flow rate ratio of oxygen to hydrogen chloride is (5~20):1. This invention optimizes the number of growth cycles and growth conditions during the preparation of the gallium oxide epitaxial wafer, reduces epitaxial defect density, improves epitaxial film quality, and realizes the preparation of high-thickness gallium oxide epitaxial wafers with low surface defects and nanoscale surfaces.

The utility model discloses a high -purity quartz sand microwave chlorination device, including the reaction jar body, microwave generator and chlorine gas conveying subassembly, the microwave generator sets up in the reaction jar body side portion, and its waveguide port extends to the inside of reaction jar body, chlorine gas conveying subassembly includes the gas storage jar body, gas flow controller and trachea, gas flow controller installs on the gas storage jar body, the trachea one end is connected with gas flow controller, and the other end passes through the top of reaction jar body and extends to the inside, the inside of reaction jar body is provided with the mechanism of scattering, the top of reaction jar body is provided with the auxiliary unloading assembly of cooperation with the mechanism of scattering and realizes unloading, be provided with the stirring mechanism on the reaction jar body, the utility model belongs to chlorination device technical field, and specifically refers to a kind of high -purity quartz sand microwave chlorination device.

This invention discloses a method for recovering gallium-vanadium enriched material from gallium-vanadium-containing solid waste. The method includes: mixing the gallium-vanadium-containing solid waste with waste acid, stirring and leaching under heating conditions to obtain a slurry; wherein the waste acid is selected from waste hydrochloric acid, a byproduct of titanium dioxide extraction tail gas treatment during the chloride process, or waste sulfuric acid formed after drying chlorine gas with concentrated sulfuric acid during the chloride process; adding a neutralizing agent to the slurry to adjust the pH value to 0.3±0.1, filtering to obtain a first filtrate; adding a reducing agent to the first filtrate to reduce the trivalent iron and pentavalent vanadium in the solution, filtering to obtain a second filtrate; adjusting the pH value of the second filtrate to 3.8-4.5 with an alkaline precipitant to carry out a precipitation reaction, and obtaining gallium-vanadium enriched material after solid-liquid separation. This invention achieves simultaneous enrichment of gallium and vanadium, simplifying the process flow, reducing operational difficulty and production costs, while obtaining high-grade gallium-vanadium enriched material.

The invention discloses a zero-discharge device and process for double-layer liquid sealing, redundant chlorine capturing, siphon pure discharge and closed-loop electrolysis of metal sodium, and belongs to the technical field of metal sodium preparation. The device comprises a furnace body, an oxygen-isolating anti-explosion inert liquid seal layer, a chlorine capture liquid seal layer, a liquid metal sodium layer, a molten sodium chloride electrolysis layer, a siphon type pure sodium discharge structure and an automatic feeding control system, the double-layer liquid seal is adopted to realize oxygen isolation, explosion prevention and chlorine in-situ absorption, the chlorine absorption capacity is designed to be more than two times of the maximum chlorine yield, and no leakage is ensured; liquid sodium is driven by lifting the liquid level during feeding to trigger siphon discharge, only pure metal sodium is produced, entrainment is avoided, and the purity is high; reaction byproducts are converted into raw materials to be recycled, no waste gas, no waste residues and no waste liquid exist in the whole process, and the byproduct water vapor can be condensed into purified water to be utilized. The device is simple in structure, intrinsically safe, high in automation degree, environmentally friendly and suitable for continuous production of high-purity metal sodium.

A process for treating rubber substrates, comprising the steps of: providing a first chemical compound comprising chlorine releasing salt and water in a first tank; providing a second chemical compound comprising acid, surfactant and water in a second tank; feeding the two chemical compounds into a mixing vessel within a treatment machine; mixing the chemical compounds to produce a rubber treatment solution; producing treated rubber substrates by spraying the rubber treatment solution onto rubber substrates moving on a conveyor; air-spraying the treated rubber substrates; and sucking and filtering chlorine gas produced during the process.

This invention discloses a method for the utilization of gas field water resources, specifically including the following steps: Step 1, gas field water treatment: adjusting the pH value to 11-12. Step 2, filtration: solid-liquid separation to obtain precipitate and treated gas field water. Step 3, electrolysis: the gas field water treated in Step 2 undergoes ion-exchange membrane electrolysis to obtain chlorine and hydrogen gas. Step 4, calcination: calcining the precipitate from Step 2 to constant weight. Step 5, dissolution: dissolving in water after calcination. Step 6, filtration: solid-liquid separation to obtain strontium carbonate precipitate and calcium hydroxide solution. Step 7, CO2 introduction: the calcium hydroxide solution reacts with CO2 to obtain calcium carbonate precipitate. This method achieves effective utilization of gas field water resources.

The application discloses a preparation method of high-purity superfine rhodium powder and belongs to the technical field of precious metal separation. The method is specifically as follows: high-purity rhodium powder is mixed with hydrochloric acid, chlorine gas is introduced to heat, dissolve and filter and concentrate to obtain a rhodium trichloride solution; alkali liquor is added to the solution to adjust the pH to 7-10, the stirring speed is controlled after heating, and a reducing agent is added at a specific rate to carry out a reduction reaction, alkali liquor is supplemented to maintain the pH stable during the process, and the rhodium is completely converted into rhodium black until the end; finally, the obtained rhodium black is washed, dried and treated by hydrogen reduction to obtain high-purity superfine rhodium powder. The high-purity rhodium powder with high purity, low sodium and potassium content and superfine particle size is obtained by adopting high-purity raw materials, controlling the reaction system in a weak alkali environment and cooperatively controlling the adding rate of the reducing agent and the stirring intensity.

A novel circulating fluidized bed chlorination furnace system is disclosed. The outlet of the petroleum coke feed tank is connected in parallel to the lower inlet of the chlorination furnace via a discharge pipe. The bottom of the chlorination furnace also has multiple chlorine inlets and slag discharge ports. The chlorine inlets are connected to chlorine pipes, and the slag discharge ports are connected to slag discharge pipes. The top of the chlorination furnace has an outlet, which is connected to the side inlet of a high-temperature cyclone separator via a feed pipe. The top of the high-temperature cyclone separator also has a liquid discharge port, which is connected to the top of a low-temperature cyclone separator via a liquid discharge pipe. The top of the low-temperature cyclone separator also has a liquid outlet. This invention features a compact structure, convenient installation, stable operation, and is safe and environmentally friendly. The entire reaction system is fluidized, preventing slag discharge pipe blockage. The combined use of the high-temperature and low-temperature cyclone separators ensures multiple cycles, repeated combustion, and reaction of the titanium tetrachloride mixture.

The application relates to the technical field of electrolytic high-purity manganese, and discloses a high-purity electrolytic manganese production method and device without chlorine gas precipitation, which adopts a three-chamber electrolytic cell, and a mixed solution of manganese chloride and ammonium chloride, a manganese sulfate solution and a sulfuric acid solution are respectively injected into a cathode chamber, an intermediate chamber and an anode chamber; direct current is applied, Mn 2+ is reduced and deposited in the cathode, and water is oxidized and oxygen is released in the anode; Cl ⁻ in the cathode is blocked by a cation exchange film, so that chlorine gas is not generated by anode discharge. The purity of the metal manganese deposited in the cathode is stabilized at above 99.995%, and the pollution of sulfur impurities is effectively avoided; chlorine gas hazards can be eliminated, the production environment is friendly, and the process is relatively safe.

This invention relates to the field of alkali metal-chlorine secondary battery technology, and discloses an electrolyte additive, an electrolyte, and an alkali metal-chlorine secondary battery. The additive contains components A, B, and C in a mass ratio of 1:0.2-2.0:0.5-3.0; component A is selected from at least one of ethyl viologen dibromide, benzyl viologen diiodide, and 1,4-phenylenediamine hydroiodate; component B is selected from at least one of 3-(4-iodophenyl)-3-(trifluoromethyl)-3H-bisacrylidine, 1-bromo-2-fluorobenzene, and 4-(benzyloxy)-1-bromo-2-fluorobenzene; and component C is selected from at least one of 3-(trifluoromethyl)phenyltrimethylammonium bromide, (3-fluoro-4-iodophenyl)methylamine, and 3-iodobenzylamine. The electrolyte provided by this invention, when applied in an alkali metal-chlorine secondary battery system, exhibits high reversible capacity, cycle stability, and environmental adaptability.

The utility model belongs to chlorine gas absorption technical field, specifically disclose a novel accident chlorine gas absorption device, including primary accident tower and secondary accident tower, the secondary accident tower is fixed in primary accident tower top, is connected with the draught fan in the secondary accident tower top, is provided with chlorine gas release pipeline in primary accident tower side, is provided with the secondary sodium circulating pump in primary accident tower bottom and is connected with secondary sodium circulating pump's input, is connected with secondary sodium heat exchanger in secondary sodium circulating pump's output, is connected with secondary sodium circulating pipeline between secondary sodium heat exchanger and primary accident tower, the position of secondary accident tower near top is equipped with lye pipeline, is connected chlorine gas ascending pipeline between primary accident tower and second accident tower, is connected with secondary sodium descending pipeline between secondary accident tower and secondary sodium circulating pipeline, the fresh lye is from secondary accident tower top and is entered, and the accident release chlorine gas or overpressure release chlorine gas is from primary accident tower bottom and is entered, realizes countercurrent absorption in series connection's primary accident tower and secondary accident tower.

The utility model provides a kind of based on the household intelligent irrigation device of automation control, it is related to household irrigation device technical field, including shell, the upper portion of shell is provided with chlorine removal mechanism;Chlorine removal mechanism includes transparent box, the outer surface of transparent box is fixedly connected with the inner wall of shell, the left side surface of shell is equipped with several air grooves, the inside of shell is provided with air pump, the air outlet of air pump is fixedly communicated with check valve, the air outlet of check valve is fixedly communicated with several spray heads and is penetrated through shell, the inner bottom wall of transparent box is fixedly connected with baffle cover.The household intelligent irrigation device based on automation control, play to make the automatic control household intelligent irrigation device have tap water processing function, can effectively remove chlorine in tap water, ensure that household greenery will not appear poor growth and soil hardening etc. when irrigating due to chlorine in tap water, increase the effect of the use of the automatic control household intelligent irrigation device.

The application provides an inert anode and a preparation method and application thereof, and belongs to the technical field of electrolytic aluminum anode materials. The anode substrate is pretreated and then coated, dried and solidified in a polytetrafluoroethylene dispersion liquid to obtain the inert anode. The tungsten anode is surface-modified, the excellent corrosion resistance and electrochemical stability are maintained, the bubble dynamic behavior is significantly optimized, and the efficient separation of chlorine bubbles and the synchronous improvement of current efficiency are realized in the process of low-temperature electrolytic aluminum in ionic liquids.

The application belongs to the technical field of medicine synthesis, and provides a new preparation method of isoflurane. The method uses hypochlorite and a strong acid as a chlorinating reagent to perform chlorination, which avoids the problems of low conversion rate and excessive chlorination to generate more impurities caused by chlorine gas chlorination. The reaction is more moderate, economical, environment-friendly and high-yield, and is suitable for industrial production.

The utility model provides a kind of petrochemical cracking device chlorine-containing waste gas low-temperature adsorption recovery device, it is related to chlorine-containing waste gas recovery technical field, including absorption cylinder and washing tank, the bottom of absorption cylinder is provided with base, and the middle part of base is provided with liquid accumulation drain pipe, the lower end of liquid accumulation drain pipe is led into washing tank, and the middle part in washing tank is provided with filter screen frame, washing tank is equipped with lye, and the left part of washing tank is provided with waste gas inlet pipe, the upper portion of waste gas inlet pipe is connected with return pipe, return pipe is installed with suction pump in the upper portion, and the upper end of return pipe is connected on the left side surface upper portion of absorption cylinder, dehumidifier is installed in the lower part in absorption cylinder.The utility model first carries out lye washing to chlorine-containing waste gas, then in turn carries out dehumidification, drying, adsorption and purification treatment, and the gas after treatment can be recycled, which helps to improve the absorption rate of chlorine gas, so that the gas after treatment is cleaner and more complete, and the discharge is safe, reliable and environmentally friendly.

Processes for treating spent caustic in a hydrocarbon process utilizing HCl are described. The processes include sending the spent caustic to a caustic scrubbing system. HCl rich off gases are routed to the scrubbing system. This process is designed to deplete the NaOH in the spent caustic and form a brine solution. The brine is sent to an electrochemical cell to convert the NaCl to NaOH while generating chlorine and hydrogen gas. The NaOH generated from the electrochemical reaction is recycled back to the caustic scrubber, while the chlorine and hydrogen gas are combined and recycled back to the reaction zone.

This invention relates to a method for preparing KOH using CO. The cathode uses carbon monoxide (CO) as a raw material, employing electrolysis to prepare acetate and potassium hydroxide. The anode is coupled with brine electrolysis to produce chlorine gas. The CO electrolysis is coupled with KCl electrolysis, producing C2 chemicals while also generating chlorine and KOH as byproducts. This invention provides a novel KOH preparation process that co-produces KOH and acetate, resulting in lower costs and promising application prospects.

This application discloses a semiconductor structure based on molybdenum metal lines and a method for manufacturing the same, comprising: sequentially forming a front dielectric layer, a molybdenum metal layer, and a mask on a substrate; through the mask, performing a first plasma dry etching on the molybdenum metal layer at a first temperature using a mixed gas containing oxygen, chlorine, and hydrocarbon gases to form molybdenum metal lines on the front dielectric layer; removing the mask, and at a second temperature, oxidizing the sidewall surface of the molybdenum metal lines using an oxidizing gas to generate a molybdenum trioxide layer; at a third temperature, dissolving and removing the molybdenum trioxide layer using an alkaline solution; repeating the process of generating and dissolving the molybdenum trioxide layer to reduce the surface roughness of the sidewalls; the second temperature is above 150°C and below 250°C, and the first and third temperatures are lower than the second temperature. This application can obtain a vertical sidewall morphology and improve the surface roughness of the sidewalls.

The utility model provides a trichloro isocyanuric acid production is with chlorine leakage detection device relates to chlorine leakage detection field, this trichloro isocyanuric acid production is with chlorine leakage detection device, including the connecting cover of setting in the movable component connecting gap place of chlorine passing, the inside of connecting cover one end is provided with the sealing washer of covering movable component, and one of sealing washer is provided with the air inlet hole, and the one end of connecting cover is provided with the communicating pipe, and the one end of communicating pipe is connected and has the connection main pipe of through in the far -side of connecting cover. This trichloro isocyanuric acid production is with chlorine leakage detection device, through setting up the connecting cover setting in the movable component connecting gap place of device, starts the air extraction unit and passes the air extraction through the air inlet hole, and the gas is detected through the chlorine detection unit, when detecting that there is chlorine, it is explained that the gap exists leakage, and the electromagnetic tee joint is matched and exports the gas to the chlorine processing unit and handles, through such setting can detect chlorine leakage.

This utility model relates to a hydrogen-rich box, including a box body 10 and a box cover 20. A hydrogen-generating electrode 30 is provided at the bottom of the box body 10. The hydrogen-generating electrode includes a proton exchange membrane 31, a cathode plate 32, and an anode plate 33. The cathode plate 32 is disposed above the proton exchange membrane 31, and the anode plate 33 is disposed below the proton exchange membrane 31. The beneficial effects of this utility model are: hydrogen-rich water is generated in a sealed box, preventing hydrogen loss; the hydrogen-rich water is absorbed by absorbent materials such as towels inside the hydrogen-rich box, and then applied to the skin using the absorbent materials, improving the utilization rate and health benefits of hydrogen in the health care process. Using a hydrogen-generating electrode with a proton exchange membrane can prevent oxygen and chlorine from mixing into the hydrogen-rich water, avoiding the influence of ozone and chlorine on the hydrogen health care process.