18results about How to "Improve desulfurization effect" patented technology

This invention relates to the field of petrochemical catalytic desulfurization technology, specifically disclosing a high-efficiency desulfurizing agent, its preparation method, and its application in the desulfurization of heavy naphtha. The desulfurizing agent provided by this invention has a "two-level" metal active center. The first level is a cobalt center in biochar, and the second level is a nickel-copper bimetallic center introduced through impregnation on the surface of a composite carrier. The desulfurizing agent provided by this invention has excellent desulfurization effect. Under conditions of 140°C and no hydrogen, it can simultaneously remove inorganic sulfur such as hydrogen sulfide and organic sulfur such as thiols, thioethers, and thiophenes from heavy naphtha obtained by hydrocracking of heavy diesel oil, wax oil, or mixed diesel and wax oil, reducing the total sulfur content from 25-40 μg·g. ‑1 Reduced to 0.2 μg·g ‑1 The following methods can effectively protect bimetallic (multimetallic) reforming catalysts from sulfur poisoning, and the preparation process is green and controllable, making it suitable for large-scale industrial applications.

This utility model provides a rotary kiln flue gas desulfurization device with a sodium-based powder uniformly spraying structure, including: a dust removal component, a powder spraying component, and a pipeline component. The powder spraying component is connected to the pipeline component through a conveying pipe, and the pipeline component is connected to the dust removal component through a connecting pipe. The dust removal component includes: a dust collector body. The pipeline component includes: pipeline one, pipeline two, and pipeline three. Pipeline one and pipeline two are respectively installed at the left and right ends of pipeline two. A vibrator is installed on the upper surface of pipeline two. Compared with the prior art, this utility model has the following beneficial effects: by setting the powder spraying component, the uniform spraying of sodium-based powder during use can ensure that the desulfurizing agent is fully dispersed in the flue gas of the pipeline component. During the flue gas desulfurization process, uniform spraying can give the sodium-based powder more contact opportunities with acidic gases such as sulfur dioxide, thereby forming a better desulfurization effect.

A method for reducing slag viscosity during blast furnace smelting belongs to the field of ironmaking technology. This invention solves the problem that excessively high slag viscosity hinders desulfurization and makes slag discharge difficult. Specifically, it includes the following steps: S1: Increasing the slag temperature from the original 1530℃ to above 1550℃; S2: Controlling the basicity of the slag, which was originally 1.20 to 1.28 times higher, to between 1.15 and 1.25 times higher; S3: Increasing the MgO content in the original slag from 6% to 8% to 12%; S4: Reducing the FeO content in the original primary slag from 35% to ≤22%; S5: Reducing the Al2O3 content in the original slag from 20% to ≤19%; S6: Controlling the CaF2 content in the original slag from 1.0% to 1.0% to 2.0%. This invention, through precise control of the composition, maintains suitable viscosity and surface properties in the slag. It significantly improves the desulfurization reaction efficiency and desulfurization capacity of slag, and improves the quality of molten iron; moreover, the optimized viscosity range, combined with the increased tapping frequency, ensures that slag and iron can be smoothly separated and discharged, promoting efficient smelting.

This invention relates to a medium-high fluorine, low-alumina slag system for electroslag remelting S-06 stainless steel, belonging to the field of electroslag special metallurgical technology. It addresses the problems of high fluorine content, significant pollution, and poor uniformity of steel ingots produced by existing electroslag remelting slag systems. The mass percentage of each component in the medium-high fluorine, low-alumina slag system of this invention is as follows: CaF2: 56.4%~57.3%, Al2O3: 11.5%~14.9%, CaO: 19.7%~20.2%, MgO: 8.0%~10.0%, SiO2: 0.9%~1.1%, C: 0.04%~0.06%, with the remainder being impurities. The slag system of this invention exhibits good metallurgical effects; when using this slag system for electroslag remelting S-06 stainless steel, the resulting steel ingots show uniform elemental distribution and a uniform slag coating.

This utility model relates to the technical field of flue gas purification, specifically a flue gas desulfurization device for a circulating fluidized bed boiler, comprising: a boiler, a pretreatment desulfurization component, a water circulation desulfurization component, and a filtration desulfurization component; the water circulation desulfurization component is arranged in multiple layers, which are sequentially distributed between the pretreatment desulfurization component and the filtration desulfurization component; the water circulation desulfurization component includes a water circulation conduit, with its two ends respectively located at both ends of the water circulation desulfurization component for circulating desulfurization; the flue gas is facilitated by the flue gas desulfurization inlet and outlet equipped on the boiler, while the pretreatment desulfurization component can perform preliminary desulfurization after the flue gas enters the boiler, and the introduction of multiple layers of water circulation desulfurization components enhances the desulfurization effect; the water circulation conduit realizes water resource recycling, which is energy-saving and environmentally friendly, with a compact structure, smooth desulfurization, and improves the flue gas treatment capacity and environmental performance of the boiler.

The application belongs to the technical field of desulfurizer, and discloses a natural gas desulfurizer, a preparation method and application thereof, the natural gas desulfurizer comprises 2-(2-morpholine-4-ethoxy)-ethanol and N-methyl diethanolamine with a molar ratio of (1-3):(2-4). The removal rate of H2S reaches more than 98%, and the removal rate of organic sulfur reaches 70%-75%. The application expands the application range of N-methyl diethanolamine as a main agent, and can be used for refining and removing hydrogen sulfide and organic sulfur in the acidic gas in the natural gas, coal chemical industry and petroleum chemical industry process. The preparation process of the composite desulfurizer is simple, the cost is low, the environmental pollution is small, and the application effect is outstanding.

The application provides a blast furnace gas desulfurizer regeneration device and a regeneration method, and belongs to the technical field of blast furnace gas fine desulfurization, wherein the blast furnace gas desulfurizer regeneration device comprises a regeneration box body, and the regeneration box body is internally provided with a buffer chamber, a reaction chamber and a material conveying chamber; the buffer chamber is communicated with a circulating water pool; the buffer chamber and the reaction chamber are communicated through a flow passage, and the flow passage is internally provided with a first switch; the reaction chamber is communicated with a feeding pipe; the reaction chamber is internally provided with a first liquid return pipe; the material conveying chamber is communicated with the lower part of the reaction chamber through a flow port and a second switch, and the lower end surface of the material conveying chamber is provided with a first material conveying port and a second material conveying port provided with a filter screen. The blast furnace gas desulfurizer regeneration device and the regeneration method provided by the application realize the regeneration of the desulfurizer in the circulating water by setting the buffer chamber, the reaction chamber and the material conveying chamber to react the circulating water with the iron salt, to generate the precipitation by reacting the sulfur in the circulating water, to reduce the sulfur content in the circulating water and to reduce the desulfurizer.

The present application relates to desulfurization technical field, specifically to a kind of under-liquid slurry supply desulfurization absorption tower and desulfurization method thereof, including tower body, spray layer, oxidizing air pipe, slurry circulating pump, gypsum discharge pump and agitator, further including a under-liquid slurry supply pipeline, slurry pool is equipped in the tower body, slurry supply outlet is equipped on the under-liquid slurry supply pipeline, the slurry supply outlet is arranged on the lateral wall of slurry pool area, the slurry supply outlet position is higher than the effective stirring depth of the agitator paddle, but lower than the slurry pool liquid level position of traditional under-liquid slurry supply.The present application makes that gypsum quality is radically improved, system efficiency and energy saving are remarkable, limestone utilization rate approaches theoretical optimum value, system adaptability is strong, investment potential is big.

The utility model discloses a calcium hydroxide flue gas desulfurization device, including desulfurization box and drive seat, the central position of desulfurization box top end is installed with drive seat, the sidewall of drive seat is installed with step motor, the output of step motor is installed with worm, the top of drive seat is installed with adapter sleeve, the central position of desulfurization box inside is provided with the stirring rod, and stirring rod penetrates drive seat and extends to the inside of adapter sleeve and is connected with adapter sleeve swing, the stirring rod surface of worm one side is equipped with worm wheel, and worm wheel and worm are interlocked, the sidewall of stirring rod is provided with air inlet pipe. The utility model not only has realized the convenient circumferential rotation stirring calcium hydroxide solution and made it with flue gas even contact, has facilitated the quick dismounting of filter block and has replaced and the convenience of circumferential rotation scraping and cleaning the precipitate adhered on the inner wall, and has improved the effect of flue gas desulfurization and the convenience of cleaning precipitate.

The utility model discloses a device of control SO2 emission concentration is fixedly installed with air inlet pipe in the lateral surface of jar body, the inside fixed mounting of air inlet pipe has detection device no.

This invention belongs to the field of natural gas desulfurization technology, specifically relating to a multi-stage desulfurization device for recovering sulfur-containing natural gas tail gas. It includes an inlet pipe, a desulfurization mechanism, a stirring mechanism, and a purification mechanism. The desulfurization mechanism controls a gas pump to draw natural gas tail gas into the gas transmission pipe through the inlet pipe. Lime solutions inside the first, second, and third tanks sequentially adsorb sulfur dioxide from the tail gas upon contact, thus achieving multi-stage desulfurization and improving the desulfurization effect. The stirring mechanism, controlled by a servo motor, rotates the stirring blades to agitate the lime solution, further enhancing the desulfurization effect. The purification mechanism uses activated carbon plates to adsorb water vapor and impurities in the tail gas, reducing odor emissions. Baffles reduce the speed of the tail gas movement within the fourth tank, increasing the contact time between the tail gas and the activated carbon plates, thereby improving the purification effect.

A flue gas desulfurization system for purifying sulfur-containing flue gas generated by coal-fired equipment in factories includes a desulfurization tower body. A spiral inlet duct at the bottom of the tower body is designed to lift the flue gas upwards. Inside the tower body, from bottom to top, are a flue gas dispersion seat and a first desulfurizing agent injection section. The flue gas dispersion seat is an inverted conical seat, supported by a support member and positioned in the middle of the tower body, with its axis coaxial with the tower body's axis. In this invention, the sulfur-containing flue gas flows spirally upwards through the spiral inlet duct towards the top of the tower body. Under the action of the flue gas dispersion seat, the flue gas is dispersed, causing most of it to flow towards a variable-diameter spiral tube in the opposite direction of its rotation. Alkaline powder injected through the first desulfurizing agent nozzle comes into direct contact with and reacts with the sulfur-containing flue gas, prolonging the reaction time between the flue gas and the alkaline powder within the tower body, improving desulfurization efficiency, and reducing powder waste.

This invention belongs to the field of petroleum extraction technology, specifically relating to a desulfurizing agent for oil wells and its preparation method. The preparation method includes: in an alkaline organic solvent, 1,4-bis(3-aminopropyl)piperazine and 1,3-dichloro-2-propanol undergo a first substitution reaction to obtain an intermediate; subsequently, the intermediate undergoes a second substitution reaction with 2-hydroxy-N,N-bis(2-aminoethyl)ethylamine to obtain the oil well desulfurizing agent. Based on 1 mole of 1,4-bis(3-aminopropyl)piperazine, the amounts of 1,3-dichloro-2-propanol and 2-hydroxy-N,N-bis(2-aminoethyl)ethylamine are 1.6-2.4 moles and 1.6-2.4 moles, respectively. The desulfurizing agent of this invention has the advantages of rapid desulfurization and good desulfurization effect, with a sulfur capacity of over 33%.

The utility model discloses a ship tail gas desulfurization treatment device, including circulating pool, inlet pipe, drain pipe and desulfurization structure, inlet pipe is arranged in the circulating pool side below, drain pipe is arranged in the circulating pool side top, the desulfurization structure is located on the circulating pool, the desulfurization structure includes spraying unit and reagent adding unit, spraying unit is located in the circulating pool, reagent adding unit is located on the circulating pool top. The utility model belongs to desulfurization treatment equipment technical field, and specifically refers to a ship tail gas desulfurization treatment device, and effectively solves the problem that ship tail gas desulfurization treatment device equipment is complex, and the volume is big, adopts the spraying contact mode, and the contact effect is poor, and the desulfurization efficiency is low.

The utility model relates to fuel oil desulfurization technical field discloses a kind of fuel oil desulfurization device, including reaction cylinder and the support leg connected in the bottom end of reaction cylinder, filter cleaning mechanism and stirring mechanism are arranged in reaction cylinder, filter cleaning mechanism includes the baffle being arranged in the inside of reaction cylinder, filter hole is opened in the baffle, filter hole is used to filter metal impurities etc. in fuel oil, prevent subsequent influence desulfurization effect, the filter hole being opened in the baffle can be filtered to the fuel oil being put in, to this, metal impurities etc. in fuel oil can be filtered, prevent subsequent desulfurization process metal impurities influence desulfurization effect, simultaneously by driving cleaning scraper rotation can be scraped to the metal impurities being stored after filtration and cleaned, to prevent metal impurities cause filter hole blockage influence subsequent filtration effect.

This invention relates to a low-fluorine, high-calcium desulfurization slag system for electroslag remelting S-06 stainless steel and its application method, belonging to the field of electroslag special metallurgical technology. It addresses the problems of high fluorine content and pollution in existing electroslag smelting slag systems, resulting in poor uniformity of the prepared steel ingots and uneven, thick slag skin. The mass percentage of each component in the low-fluorine, high-calcium desulfurization slag system of this invention is as follows: CaF2: 38.3%~42.1%, Al2O3: 23.2%~24.8%, CaO: 30.9%~32.8%, MgO: 1.0%~5.0%, SiO2: 0.8%~1.0%, C: 0.07%~0.1%, with the remainder being impurities. The slag system of this invention exhibits good metallurgical effects; when using this slag system for electroslag remelting S-06 stainless steel, the resulting steel ingots have a uniform elemental distribution and a uniform slag skin.