12results about How to "Efficient desulfurization" patented technology

The invention relates to the field of metallurgy, and discloses a rotary blowing desulfurization method, in a molten iron pretreatment process, molten iron in a molten iron ladle is desulfurized by sequentially spraying a first desulfurizer into the molten iron, adding a second desulfurizer into the surface of the molten iron and spraying a third desulfurizer into the molten iron. The rotary blowing desulfurization method disclosed by the invention is beneficial to shortening the desulfurization time and improving the production efficiency while meeting the desulfurization effect, and is suitable for popularization and application in iron and steel enterprises.

The invention relates to the field of metallurgy, and discloses a KR desulfurization method, in a molten iron pretreatment process, under the conditions that a KR stirring head is inserted into molten iron in a ladle and the KR stirring head rotates, a first desulfurization agent and a desulfurization auxiliary agent are added to the surface of the molten iron at the same time, and then a second desulfurization agent is added to the surface of the molten iron; and the molten iron in the ladle is desulfurized. The KR desulfurization method disclosed by the invention is beneficial to shortening the desulfurization time and improving the production efficiency while meeting the desulfurization effect, and is suitable for popularization and application in iron and steel enterprises.

The invention discloses a desulfurization stirrer, and belongs to the field of chemical equipment. A top cover is arranged at the top of a stirring tank, a discharging pipe is arranged at the bottom, three rotating shafts with stirring rods are inserted into the top cover, and a driving assembly composed of a motor, a driving shaft, a chain wheel and a chain drives the rotating shafts to rotate synchronously. The feeding hopper is inserted into one end of the top cover in a sliding mode, and an ejector rod of the feeding hopper is matched with a protrusion of the rotary disc on the driving shaft, so that the feeding hopper can swing to achieve uniform feeding. An adjusting structure is arranged, and the swing amplitude of the feeding hopper can be controlled through a hand wheel and other components. A stop valve, an organ shield, a controller and other components are further arranged. The stirrer can fully stir materials, is uniform in feeding, is flexible to adjust, is convenient and reliable to operate, and can effectively improve the desulfurization efficiency and quality.

The invention discloses an efficient composite injection molten iron desulfurization method, which mainly solves the technical problem of high molten iron desulfurization cost in the existing magnesium-based composite injection molten iron desulfurization process. According to the technical scheme, the efficient composite injection molten iron desulfurization method comprises the following steps: 1) collecting parameters of inverted molten iron; (2) front injection is carried out, the injection powder is lime powder, a top spray gun is inserted into the molten iron in the ladle, the lime powder is injected, and front injection parameters are determined before the lime powder is injected; (3) composite injection is conducted, injection powder is lime powder and magnesium powder, after front injection is finished, the lime powder and the magnesium powder are injected into the molten iron in the ladle at the same time, and composite injection parameters are determined before the lime powder and the magnesium powder are injected; 4) carrying out post-injection, wherein the injection powder is lime powder; and (5) after the post-blowing is finished, the spray gun is lifted. According to the method, high-efficiency and low-cost desulfurization of the molten iron is realized by adopting a lime powder desulfurization mode in a front injection stage.

The invention provides environment-friendly fluoride-free KR desulfurization powder which comprises the following components in percentage by mass: 78-90% of CaO; 1%-4% of Al; 4%-8% of Al2O3; 0 to 3 percent of SiO2; 0 to 3 percent of MgO; 0 to 0.05 percent of S; the balance is impurities; traditional fluorite is not used as a fluxing agent, so that the environment is not polluted, a ladle is not eroded, and the steelmaking cost is reduced; high-efficiency desulfurization is realized, Al2O3 can be generated by combining with free oxygen in molten iron, the oxygen activity is reduced, and the desulfurization reaction speed can be further increased; and compensating temperature drop. The formula is simple, and the problems that fluorite is harmful to the environment and can erode ladles, and the steelmaking cost is increased are solved.

The utility model discloses a flue gas dedusting and desulfurizing device which comprises a tank body, a rotational flow plate assembly, a rotary packing assembly and a fixed packing assembly are sequentially arranged in the tank body from bottom to top, a rotating shaft is rotatably arranged in the tank body, the rotational flow plate assembly and the rotary packing assembly are both fixedly connected to the rotating shaft, and the bottom end of the rotating shaft penetrates through the inside and the outside of the tank body. The side wall of the bottom of the tank body is communicated with an air inlet pipe, the top of the tank body is communicated with an exhaust pipe, a flow guide assembly is arranged between the rotational flow plate assembly and the rotary filler assembly, a first liquid distributor is arranged in the center of the rotary filler assembly, and a second liquid distributor is arranged above the fixed filler assembly. The first liquid distributor and the second liquid distributor are connected with the liquid storage tank through a circulating pipe, and a circulating pump is arranged on the circulating pipe. After the rotational flow plate assembly, the rotary filler assembly and the fixed filler assembly are arranged in the tank body for three-stage collaborative desulfurization, the desulfurization efficiency can be effectively improved, and the occupied area is reduced.

The present application relates to a ship flue gas denitration, desulfurization and decarbonization system, which includes a denitration mechanism, a desulfurization mechanism, a decarbonization mechanism and a carbon dioxide preparation mechanism, wherein the flue gas input end of the denitration mechanism is used to receive ship flue gas, the flue gas output end of the denitration mechanism is connected to the flue gas input end of the desulfurization mechanism, the flue gas output end of the desulfurization mechanism is connected to the flue gas input end of the decarbonization mechanism, the decarbonization mechanism is provided with a solid amine to be reacted for reacting with the desulfurized flue gas to generate decarbonized flue gas, the solid amine to be reacted generates saturated solid amine after reacting with the desulfurized flue gas, the carbon dioxide preparation mechanism is used to heat the saturated solid amine to generate carbon dioxide and the solid amine to be reacted, and the solid amine output end of the carbon dioxide preparation mechanism transports the solid amine to be reacted to the decarbonization mechanism. By optimizing the recycling of solid amine, the space occupation and equipment size requirements are reduced, and the efficiency and compactness of ship flue gas treatment are improved.

The invention relates to the technical field of triangular adhesive tape preparation, in particular to a triangular adhesive tape sizing material composition, a mixing method and a triangular adhesive tape prepared from the triangular adhesive tape sizing material composition. According to the invention, by utilizing an efficient mechanical desulfurization technology and a reasonable formula design, the regenerated rubber can be combined with the natural rubber, and the high-performance rubber material suitable for the triangular adhesive tape is prepared. The rubber material not only can meet the requirements of high strength and wear resistance in mechanical transmission, but also can significantly reduce the production cost by using a large amount of regenerated rubber, and has significant environmental benefits.

The invention belongs to the technical field of solid waste resource utilization, and provides a lithium slag desulfurization method for byproduct calcium sulfate and desulfurized lithium slag. The method comprises the following steps: mixing ores containing lithium, rubidium and cesium, lithium slag, inorganic salt and limestone, roasting to obtain clinker, mixing the clinker with water, and leaching to obtain primary desulfurized lithium slag and leachate; mixing a chlorate solution with the preliminarily desulfurized lithium slag, and carrying out autoclave desulfurization to obtain desulfurized lithium slag and a desulfurized solution, thereby completing lithium slag desulfurization; and mixing the leachate with calcium chloride for reaction to obtain calcium sulfate and a sulfate radical removal solution, and mixing the obtained calcium sulfate with calcium sulfate obtained by concentrating the desulfurization solution to obtain a byproduct calcium sulfate. According to the method, calcium sulfate is produced as a byproduct while the lithium slag is subjected to efficient desulfurization treatment, and the problems that ores containing lithium, rubidium and cesium are easy to burn and melt and hydrogen fluoride overflows during roasting are solved; meanwhile, the method is simple, low in cost and wide in application prospect.

This invention relates to the field of petrochemical technology, specifically to a method and apparatus for increasing the production of high-quality, low-sulfur petroleum coke. The method includes: subjecting feedstock oil and catalyst to hydrodesulfurization pretreatment; heat-treating the resulting liquid-solid component I; separating and extracting the resulting liquid-solid component II; and coking the obtained coking feedstock to obtain low-sulfur petroleum coke with a sulfur content ≤2 wt%. The catalyst is selected from at least one complex formed by the coordination bonding of an active metal and an organic ligand. The method provided by this invention not only achieves efficient conversion of feedstock oil and increases the production of high-quality petroleum coke, but also broadens the feedstock sources for low-sulfur petroleum coke, realizing the economic added value of feedstock oil, especially high-sulfur, low-quality feedstock oil.

The utility model relates to carbon dioxide capture technology field, specifically disclose a kind of carbon dioxide capture device, comprising: pretreatment mechanism, pretreatment mechanism includes flue gas exhaust pipe and is installed on the pretreatment component of flue gas exhaust pipe, pretreatment component includes temperature regulating equipment, desulfurization bin and dust bin, carbon capture mechanism, carbon capture mechanism includes the second transmission elbow pipe connected in the lower surface of dust bin, the second transmission elbow pipe is connected with absorption bin away from dust bin one end, absorption bin inside includes amine base compound solution;The device can realize the effect of absorbing carbon dioxide by cooperating with physics and chemistry by setting temperature regulating equipment, desulfurization bin and the pretreatment component of dust bin and absorption bin, finally carbon dioxide sensor detects that carbon dioxide content in flue gas is qualified only to automatically open electromagnetic valve and carry out smoke exhaust operation.

The invention relates to the technical field of gas treatment, and discloses a deep desulfurization system for preparing methanol from coke oven gas and a use method.The deep desulfurization system comprises a photoelectrocatalysis desulfurization module, a nano molecular sieve adsorption module and a regeneration module which are sequentially arranged in the movement direction of the coke oven gas; the photoelectrocatalytic desulfurization module is composed of a reaction tower, a photoanode, a photocathode and an electrolyte, the material of the photoanode is a TiO2-ZrO2 heterojunction nanotube array, the material of the photocathode is a NiFe-LDH / carbon felt composite electrode, and the electrolyte adopts an ionic liquid [BMIM] [BF4] coupled Fe < 3 + > / EDTA redox medium; through integration of a photoelectric coupling technology and a deep desulfurization system, efficient desulfurization, pollutant removal, prolonging of the service life of equipment, prolonging of the service life of a methanol synthesis catalyst and maximization of environmental protection benefits in the process of preparing methanol from coke oven gas are realized; sulfide oxidation / hydrogenation reaction kinetics is improved, and energy consumption is reduced.