37results about How to "Achieve desulfurization effect" patented technology

The invention discloses a control method for inclusions in bearing steel in the smelting process. The Ds-type inclusions in the bearing steel can be removed thoroughly, and the fatigue life of the bearing steel is prolonged. According to the control method for the inclusions in the bearing steel in the smelting process, a high-carbon-chromium bearing is produced through the converter procedure, the LF procedure, the RH procedure and the CC procedure, and deoxidation is conducted through silicon carbide instead of aluminum in the steel tapping process of a converter; low-alkalinity refining slag is manufactured in the LF refining process, the slag surfaces are deoxidized through the silicon carbide with high purity, thus free CaO in the slag is reduced, and forming of the Al2O3 inclusions in molten steel is reduced; and high-vacuum circulation and long-time soft blowing are conducted in the RH refining process, and thus the purpose of removing the Ds-type inclusions in the bearing steelthoroughly is achieved. As for the high-carbon-chromium bearing steel produced by implementing the control method, the total oxygen content is less than or equal to 0.0010% while the Ds-type inclusions in the steel are removed thoroughly.

The invention discloses a settling agent for wet phosphoric acid refining desulfuration. The settling agent is 0.1 to 1 mass percent aqueous solution; and the solute of the settling agent comprises nonionic flocculating agent and anionic surfactant in a mass ratio of 1: (0-75). A using method of the settling agent comprises the following steps of: adding barium salt into 75 percent phosphoric acid which is at the temperature of 60 DEG C and refined by extracting, wherein the stoichiometric ratio of the barium element in the barium salt to sulfate radicals in the phosphoric acid is 1:1; and continuously stirring the solution for 2 hours, adding the settling agent in a volume which is 0.05 to 1 percent of the volume of the phosphoric acid with stirring, continuously stirring the solution for 5 minutes to obtain phosphoric acid solution, putting the phosphoric acid solution into a settling tank, settling for 4 hours, filtering clear solution and settling slag respectively, delivering thetotal filtrate obtained by filtration to a concentration device, and performing concentration to obtain 85 percent industrial phosphoric acid. The using method is short in time, high in filtration speed, good in desulfuration effect and low in cost.

The invention relates to a combination method for deep desulfurization of liquefied gas. The method comprises the steps that liquefied gas is fed into an extraction tower to contact with an alkali liquor counter flow, desulfurized liquefied gas and regenerated alkali liquor are fed into a static mixer to be mixed and then the obtained mixture is subjected to secondary extraction, mixed liquid is separated in a liquefied gas-alkali liquor separation tank, liquid gas is fed to be subjected to water washing, alkali liquor to be generated flowing out of the bottom of the extraction tower enters a flash tank, residual liquefied gas discharged from the top of the tank is conveyed to a gas system, alkali liquor to be generated obtained at the bottom of the tank, after being heated, enters a high gravity reactor to react with non-purified air, tail gas discharged from the high gravity reactor, after being subjected to alkali liquor removal by a coalescer, is fed back to the flash tank, the tail gas subjected to alkali liquor removal is fed into a diesel oil absorption tower to contact with a diesel oil counter flow, purified tail gas discharged from the top of the tower returns to the high gravity reactor to be recycled, rich diesel oil discharged from the bottom of the tower is conveyed to a diesel oil hydrogenation device, and the obtained regenerated alkali liquor is recycled. According to the method, the desulphurization depth is large, the regenerated alkali liquor quality is high, the equipment is simple and reliable, the cost is low, the emission amount of 'three wastes' is few, and the whole process conforms to the requirements of environmental protection.

The invention relates to a method for desulfurization of coal by electrochemical catalytic oxidation, although the exiting coal chemical desulfurization methods can almost remove all inorganic sulfur and part of organic sulfur in the coal, most of the methods need strong acid, strong base and strong oxidants and need to be operated under the conditions of high temperature and high pressure, the process conditions are harsh and the cost is high; furthermore, a plurality of chemical methods can cause series damages to the structure and the nature of the coal. The invention discloses the method for desulfurization of the coal by the electrochemical catalytic oxidation, which comprises the following steps: (A) adopting NaI with the concentration of 1.5mol/L as supporting electrolyte, weighing a certain amount of the electrolyte, adding into an anode chamber in an electrolysis bath, simultaneously adding the supporting electrolyte in the same volume and the same composition into a cathode chamber, and well connecting a gas collecting system; (B) adding a coal sample with the particle size of below minus 200 meshes into the anode chamber of the electrolysis bath, and controlling the concentration of coal slurry at 0.05g/ml; (C) connecting with circulating water of a water bath tank, and energizing for electrolysis; and (D) filtering electrolyte solution after energizing for 4 hours, washing the coal sample, drying, weighing and carrying out sulfur, calorific value, ash content and infrared spectrum analysis. The technology is used for the coal desulfurization.

The invention discloses sludge fuel oil which is formed by 100 parts of sludge, 1-2 parts of microorganism deodorization-enhanced taming agent, 5-10 parts of combustion improver and combustion improving liquid and 3-5 parts of reaction propellant. The sludge fuel oil has good fluidity and stability, the storage and the transportation are convenient and the combustion effect is good. Moreover, theinvention has good environmental protection effect, a great number of sludge can be treated to change waste into valuables and no secondary pollution exists.

The invention discloses a dry method desulfurizer and a producing method and application thereof. Based on 100 parts by weight of the desulfurizer, the desulfurizer is prepared from, by weight, 30-60 parts of TiO2, 10-30 parts of ZrO2, 2-10 parts of V2O5, 2-10 parts of CoO, 1-5 parts of Co2O3 and 5-15 parts of MnO2. The dry method desulfurizer has a good catalysis and oxidation effect on sulfur dioxide in flue gas, and therefore the desulfurization efficiency is good.

This invention relates to a method for preparing desulfurization agent for coal. The desulfurization agent is composed of brown coal 38-62 wt.%, sodium phosphate 1-3 wt.%, polyaluminum chloride 2-6 wt.%, dosium carbonate 14-23 wt.%, lime stone 14-24 wt.%, sodium acetate and potassium acetate 1-3 wt.%, and magnesium sulfate and magnesium chloride 2-4 wt.%. The method comprises mixing the raw materials, and stirring mechanically. The desulfurization agent can solve the desulfurization and energy saving problems, and can be used for desulfurization of coal containing 0.8-6% sulfur used for fixed beds, fluidized beds, gas flow beds and coal boilers.

The invention discloses a method for combustion desulfurization of petroleum coke and reduction of mirabilite content in glass industry. Petroleum coke powder and active calcium oxide are uniformly mixed according to a certain ratio, then the obtained mixture is fed into a melting furnace by using high-pressure air through a fuel spray pipe, a large amount of sulfur dioxide generated in a combustion process of the petroleum coke powder reacts with the active calcium oxide under an oxidization high-temperature environment to generate calcium sulfate, so that clean combustion of the petroleum coke powder is realized; and generated calcium sulfate solids are uniformly scattered in a glass tank furnace and exert a clarification effect together with sulfur-containing raw materials in a glass batch, so that the use amount of mirabilite is reduced. According to the method, when combustion desulfurization of the petroleum coke is realized, the desulfurization product is directly used as a clarifying agent to partially replace the mirabilite for use, so that the content of the mirabilite of a glass component is reduced to 0.5-1.9%, and the total content of SOx in smoke of the melting furnace is directly reduced by 5%-15% when the smoke leaves the melting furnace. The emission amount of the SOx in a glass melting process is effectively controlled, desulfurization products can be efficiently utilized in situ, secondary pollution is avoided, and desulfurization cost is greatly reduced.

The invention discloses a method for preparing a desulfurizer from coal cinder, which comprises the following steps: firstly, placing the coal cinder into a soaking pool, and filling soaking water for soaking; and secondly, detecting the pH value of a soak solution after soaking in the soaking water, and generating the desulfurizer which can be directly poured on coal to be combusted when the detected pH value reaches more than 12. By adoption of the method to prepare the fuel coal desulfurizer, not only the coal cinder generated by coal combustion in various coal combustion yards can be fully utilized but also the prepared desulfurizer has strong desulfurization effect on flue gas generated by coal combustion, realizes reutilization of waste coal cinder, saves the desulfurization cost, reduces resource waste, and simultaneously can also simplify the desulfurization technology and reduce the cost of the desulfurizer and equipment.

The invention relates to sewage desulfurization equipment, in particular to industrial sewage desulfurization equipment. The industrial sewage desulfurization equipment provided by the invention can realize automatic control of sewage flow, automatic injection of chlorine and automatic conveying of impurities. The industrial sewage desulfurization equipment comprises a supporting base, wherein a reaction box is arranged on the supporting base; a cover plate arranged at the upper part of the reaction box in a sliding manner; first support frames arranged at the upper part of the reaction box, wherein the number of the first support frames is three; and sewage tanks arranged on the three first supporting frames. The first electric push rod telescopic rod drives the first stop block to move upwards, so that the first stop block blocks a flow guide pipe channel, sewage cannot flow into the reaction box through the flow guide pipe, the flow of the sewage is controlled, and the effect that the first stop block controls the flow of the sewage is achieved.

The invention relates to the technical field of desulfurization equipment, and provides a semi-dry method efficient desulfurization system. The system comprises a desulfurization agent preparation system and a desulfurization system body; the desulfurization agent preparation system comprises a quicklime bin, the lower end of the quicklime bin is in penetrating connection with a rotary feeding device, the driving end of the rotary feeding device is connected with a rotating shaft of a first motor, and the other end of the rotary feeding device is in penetrating connection with a digestion tank; the upper end of the digestion tank is in penetrating connection with a first water inlet pipe, the other end of the first water inlet pipe is connected with an external water source, and the side wall of the digestion tank is in penetrating connection with a slurry tank through a first connecting pipe. The defects in the prior art are overcome, the design is reasonable, the structure is compact, and the problems are solved that an existing SDS desulfurization system is poor in desulfurization effect and meanwhile, when an SDA desulfurization system is adopted, sufficient contact between a desulfurization agent solution and sulfur-containing flue gas cannot be ensured. A series of structural combinations are adopted, so that the desulfurization efficiency is improved, and the system hashigh practicability and commercial value.

The invention discloses a precipitation removal method for sulfur in Bayer process leachate of high-sulfur bauxite, and belongs to the technical field of aluminum smelting. The method comprises the following steps: putting the high-sulfur bauxite leachate into a U-shaped container, electrifying direct current for 5-6 hours, and taking out feed liquid connected to one end of a positive electrode; dissolving a precipitant in water according to the proportion of 5-50g/L, dropwise adding the precipitant solution into the feed liquid, and stirring the mixture to fully precipitate the material; heating and boiling the obtained mixed solution for 0.5-1 hour, and continuously stirring the solution; and cooling and filtering the heated solution, washing the precipitate with water to obtain sulfur-containing filter residues, and feeding the filtrate to a subsequent aluminum smelting process. The method is easy to operate and high in separation efficiency, the follow-up treatment burden of the leaching tail liquid can be relieved, and the production cost is reduced.

The invention relates to the technical field of scrubbers and in particular relates to a marine exhaust gas desulfurization purification scrubber. The scrubber comprises a tank body, a scrubbing device and a liquid storage tank, wherein the scrubbing device and the liquid storage tank are arranged inside the tank body; the liquid storage tank is arranged at the lower part of the scrubbing device;the tank body comprises an inlet, an exhaust pipe, a drainage pipe and an outlet; the scrubbing device refers to at least two groups of baffle plates fixed into a whole by virtue of wide positioning blocks; a desulfurization catalyst plate is a desulfurization catalyst layer formed by uniformly spraying a desulfurization catalyst on the surface of a metal plate; the baffle plates are at least twogroups of liquid drop separators which are detachably connected into a whole by virtue of first positioning blocks; and the liquid drop separators are composed of at least two separation channels in fixed connection by virtue of second positioning blocks. The invention solves the problem in the prior art that a marine exhaust gas scrubber is poor in desulfurization effect, and provides the scrubber with advantages of being excellent in desulfurization effect, excellent in liquid-gas separation effect and small in pollution of discharged liquids.