9results about How to "Improve desulfurization" patented technology

The invention belongs to the technical field of catalysts, and particularly relates to a novel full-fraction waste mineral oil hydrogenation catalyst and a preparation method thereof. According to the invention, polyethylene glycol is adopted as a surfactant, and a catalyst carrier with a high specific surface area is prepared through a coprecipitation process. And on the basis of the Mo-Co catalyst, a certain amount of metal manganese and cerium are added. Dispersion of active components in the catalyst is promoted through the pre-deposited cerium oxide auxiliary agent, interaction between metal and the carrier is weakened, and increase of the specific surface area of the catalyst is promoted. The addition of manganese can enhance the interaction of the components of the catalyst, and especially the formation of manganese oxide can effectively promote the dispersion of active components and prevent excessive sintering of the catalyst, thereby effectively improving the activity of the catalyst. The catalyst has the advantages of high specific surface area and pore size, high catalytic activity, effective improvement of the desulfurization and denitrification rate of the waste mineral oil, and wide application prospect.

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.

The invention provides a heavy oil modification catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalysts. The preparation method comprises the following steps: preparing magnetic ferroferric oxide nanocrystals, modifying the surfaces of the magnetic ferroferric oxide nanocrystals by using an epoxy silane coupling agent, coupling the modified magnetic ferroferric oxide nanocrystals with bis-salicylaldehyde-triethylamine Schiff base, complexing nickel and iron ions, and coating oleic acid on the surfaces of the modified magnetic ferroferric oxide nanocrystals to prepare the heavy oil modification catalyst. The heavy oil modification catalyst prepared by the invention has better hydrothermal decomposition performance and cycle durability, promotes degradation of heavy oil, promotes depolymerization of asphaltene aggregate, and finally reduces the content of colloid and asphaltene, so that the viscosity of the heavy oil is well reduced, and the heavy oil modification catalyst has a wide application prospect.

The invention provides a method for opening a new furnace by using high-silicon molten iron in a 120-ton dry dedusting converter, belongs to the technical field of steel smelting, and solves the problem that the difficulty of opening the new furnace by using the high-silicon molten iron in the existing dry dedusting converter is large. The method comprises the following steps: converter loading: loading molten iron and scrap steel into a 120-ton top-bottom combined blown converter; oxygen supply by the converter: igniting and supplying oxygen after the converter is loaded; the auxiliary materials are added for the first time after ignition, the auxiliary materials are added for the second time, the active lime is added in batches, and then the limestone and the active lime are added in batches; and converter end point control. According to the method, the converter quantity, the scrap steel quantity and the molten iron quantity are reasonably controlled, the complexity and uncertainty in the production process can be reduced, the stable molten pool depth of the converter in the smelting process can be ensured by accurately controlling the charging quantity, and therefore the production efficiency and the product quality are improved, the production cost is reduced, energy consumption is optimized, and the economic benefit is increased. Unnecessary energy consumption and waste generation are reduced, and environmental protection and sustainable development are facilitated.

The utility model discloses an efficient desulfurization and dust removal device which comprises a desulfurization tower main body, the cyclone dust collector is mounted in the desulfurization tower main body; the rotational flow plate is mounted in the desulfurization tower main body and is positioned at the top of the cyclone dust collector; the spraying assembly is fixedly connected to the interior of the desulfurization tower main body; the auxiliary mechanism is arranged at the side part of the desulfurizing tower main body and is used for forming an overhaul window so as to overhaul the spraying assembly. The cyclone dust collector, the rotational flow plates, the spraying assembly, the demister and the auxiliary mechanism are matched with one another, large dust particles are removed through centrifugal force, then alkali liquor is violently stirred by high-speed airflow through the three layers of vortex rotational flow plates, so that water reaches the optimal atomization quality, and the atomization effect is good. According to the diesel exhaust gas desulfurization and dust removal device, dust in flue gas and alkali liquor reach the maximum contact area, mist is removed through the demister, the auxiliary mechanism provides a maintenance window for the spraying assembly, and then the diesel exhaust gas desulfurization and dust removal effects are improved.

The utility model relates to a boiler tail gas desulfurization denitration dust removal device, which comprises two groups of treatment chambers which are communicated and supported on a base, and an exhaust pipe connected to the tail ends of the two groups of treatment chambers, each treatment chamber comprises a cylinder body, a cover plate, a plurality of treatment agent placing seats, sliding covers and a dust remover, and the number of the sliding covers is equal to that of the treatment agent placing seats; an opening is formed in one end of the cylinder body, and the cover plate detachably covers the opening of the cylinder body. According to the utility model, the dust remover is matched with the treating agent placing seat, so that waste gas can scatter and flow in the barrel body after being subjected to dust removal, and the waste gas can be in full contact with a desulfurization catalyst or a denitration catalyst in the treating agent placing seat, thereby improving the desulfurization or denitration effect of the waste gas; through the combined use of the two groups of treatment chambers, the waste gas can be subjected to desulfurization and denitrification treatment, and meanwhile, the waste gas can be subjected to two-time dust removal and filtration treatment, so that the content of particulate matter impurities in waste gas emission is reduced.

This utility model discloses a desulfurization device for waste gas from a thermal power plant. A liquid pump is installed on one side of the material tank, and a connecting pipe is connected to the outlet end of the pump. A flexible hose is connected to the lower end of the connecting pipe, and a drain pipe is connected to the lower end of the flexible hose. Spray nozzles are symmetrically arranged on the lower surface of the drain pipe. A motor is installed on the outside of the desulfurization tower, and a rotating shaft is connected to the drive end of the motor. A speed-reducing plate is also installed inside the desulfurization tower, and speed-reducing holes are opened inside the speed-reducing plate. An electric lifting rod is installed on the upper surface of the desulfurization tower, and a baffle is slidably installed on one side of the speed-reducing plate. This utility model relates to the field of waste gas treatment technology for thermal power plants. The speed-reducing holes opened in the speed-reducing plate can reduce the flow rate of the waste gas, allowing for better desulfurization inside the desulfurization tower. Simultaneously, the operation of the electric lifting rod causes the speed-reducing plate to rise and fall, thereby adjusting the area of ​​the speed-reducing holes and achieving better desulfurization.

The utility model relates to the technical field of white mud processing, in particular to a white mud desulfurization device. According to the technical scheme, the desulfurization tower comprises a desulfurization tower body, an outer rod and a fixing box, the outer end face of one side of the desulfurization tower body communicates with a fixing pipe, the other end of the fixing pipe penetrates through the desulfurization tower body to communicate with a supporting pipe, the upper surface of the desulfurization tower body communicates with an exhaust pipe, and the outer end face of one side of the desulfurization tower body communicates with an air inlet pipe; the outer surface of the air inlet pipe is in threaded connection with an air inlet valve, a supporting pipe is fixed to the inner wall of the desulfurizing tower body, the lower surface of the supporting pipe communicates with a spray head, supporting legs are welded to the lower surface of the fixing box, a sealing cover is connected to the upper surface of the fixing box through hinges, and a handle is welded to the upper surface of the sealing cover; a filter plate is fixedly embedded into the inner wall of the fixed box, an outer rod is fixed to the outer end face of one side of the fixed box, and an inner rod is movably inserted into the outer end face of one side of the outer rod. The device is convenient for grinding the white mud and filtering and removing large-particle impurities in the white mud.

The invention discloses environment-friendly high-performance anhydrous stemming for an iron-making blast furnace and a preparation method of the environment-friendly high-performance anhydrous stemming, belongs to the technical field of refractory materials, and is used for solving the problems that the bonding strength, the high temperature resistance, the green and environment-friendly performance and the like of anhydrous stemming in the prior art need to be improved due to the fact that the anhydrous stemming is modified by adopting a binding agent. The ceramic material comprises the following components in parts by weight: 30-40 parts of bauxite, 5-10 parts of silicon nitride micro powder, 20-30 parts of silicon nitride, 3-5 parts of silicon iron nitride micro powder, 6-10 parts of composite inorganic micro powder, 5-10 parts of modified coal tar, 1-2 parts of carbon black, 3-5 parts of carbon nanotubes and 5-10 parts of a modified adhesive. The coal tar is modified by the surfactant, the flammability of the coal tar is improved, and the modified adhesive prepared by modifying polyurethane with diketoxime and nano lignin powder has the characteristics of high adhesiveness, environment friendliness and high temperature resistance.