60results about How to "Reduce desulfurization operating costs" patented technology

An attapulgite flue gas desulfurizer is prepared from the following raw materials by weight: 100-120 parts of attapulgite, 40-45 parts of active carbon, 20-24 parts of magnesium chloride, 4-5 parts of zinc oxide, 25-28 parts of calcium oxide, 6-8 parts of sodium carbonate. 20-24 parts of wild chrysanthemum flowers, 10-12 parts of cordate houttuynia, 35-40 parts of monazite powder, 5-7 parts of sodium metasilicate, 3-4 parts of coconut fatty acid monoethanolamide, 4-5 parts of auxiliary agents, and a proper amount of water. By using attapulgite and monazite powder, the desulfurizer of the invention has adsorption decoloration and ion exchange effects, has good adsorption effect on sulfur dioxide, decreases the using amount of active carbon, and reduces the cost; by using wild chrysanthemum flowers and cordate houttuynia, the desulfurizer of the invention not only has adsorption effect, but also has antibacterial effect after carbonization; by using a plurality of basic metal oxides, rapid desulfurization is realized; the desulfurizer of the invention is high in porosity, large in adsorption quantity, easy to regenerate, and simple in production process, and can greatly reduce the operation cost of dry-method desulfurization.

The invention discloses activated carbon diatomite particles with well-developed pores and low cost. The activated carbon diatomite particles are characterized by being prepared from the following raw materials in parts by weight: 95-105 parts of fruit shell activated carbon, 30-35 parts of diatomite, 18-22 parts of traditional Chinese medicine residues, 22-26 parts of tung seed shells, 6-9 parts of kaoline, 1-2 parts of a silane coupling agent kh560, 3-4 parts of sodium sulfate, 4-6 parts of limestone powder, 2.5-3.5 parts of vitrified microspheres, 3.5-5 parts of silicon micro-powder, 3-5 parts of clay, 3-5 parts of active aluminum oxide, 4-6 parts of an absorbent additive and an appropriate amount of water. According to the method for preparing the activated carbon diatomite particles with the well-developed pores and the low cost, the materials such as the traditional Chinese medicine residues, and the tung seed shells are reused, dried, crushed and then added into the activated carbon and the diatomite, and the particles have sufficient sources of raw materials, the well-developed pores, the high absorption ability and the excellent property; the absorbent additive gives the special porosity of the particles and increases the contact time between gas and each particle; the particles prepared according to the method have the good desulfurization dedusting effect and the high porosity, and is low in cost and simple in production process, and therefore, the operation cost of dry desulfurization is greatly reduced.

The catalytically oxidizing process for desulfurizing fume and co-producing polyferric sulfate includes: absorbing and dissolving SO2 from fume in a desulfurizing tower with ferrous sulfate solution as desulfurizing absorbent, catalytically oxidizing sulfite radical into sulfuric acid in the presence of O2 and iron ion as catalyst, reacting sulfuric acid and ferrous sulfate to co-produce liquid polyferric sulfate, and drying to obtain solid polyferric sulfate. The process has cheap desulfurizer, no waste discharge and obvious economic benefit, and is suitable for desulfurizing fume in boilers and other advantages.

The invention discloses a liquid phase oxidation catalyst which is used to desulphurize fire coal flue gas. The invention comprises a surface active agent, M2+1, M3+2 and industrial-grade urea, wherein the mass ratio between the surface active agent and the industrial grade urea is 1:40-1:60, the solution mass concentration ratio between the M2+1and the M3+2 is 10:1-30:1, the mass ratio between the surface active agent and the M2+1 is 1:80-1:90, and M is Mn or Fe or Mg. The oxidative catalyst of the invention is very easy to be dissolved in water, and water solution is weakly-acidic. Density range is 2.75-2.93*103kg.m-3, and physiochemical stability is comparatively good. The invention only has catalytic oxidative effect in the process of flue gas desulphurization and no consumption theoretically, and can be used in circulation. The oxidative catalyst of the invention is adopted to desulphurize the fire coal flue gas, desulphurizing efficiency can be increased, simultaneously a desulphurizing process can be simplified (without an oxidation draught fan process), the operational cost of the flue gas desulphurization can be lowered greatly, and the invention has great practical applicable value and wide applicable foreground.

The invention discloses a preparation method for a desulfurizing agent. The preparation method for a desulfurizing agent comprises the following steps of: taking attapulgite as a raw material, and drying the raw material after alkali modification and activation treatments; grinding the raw material into powder, sieving, granulating and forming; then performing roasting activation; and finally sieving the powder into a spherical attapulgite desulfurizing agent finished product. The attapulgite desulfurizing agent obtained by the preparation method disclosed by the invention is good in alkali modification effect, rough and hard in the surfaces of spherical particles, not easy to break, large in specific surface area, high in porosity, good in adsorptive property for sulfur dioxide, easy to regenerate, simple in production process, low in cost, capable of being used for replacing active carbon (coke) to perform flue gas desulfurization, and greatly reducing the running cost of dry desulfurization, and also capable of being used for sewage treatment and other occasions.

The invention provides a method for utilizing calcium carbide furnace dust and flue gas for desulfurization,and belongs to a coal fired boiler desulfurization method. Furnace gases containing dust and flue gases, which are generated during the production of the calcium carbide furnace, are transferred to a furnace hearth above a grate of the coal fired boiler, calcium oxide in the dust makes the over reaction with sulfur dioxide generated when coal burns, and the generated calcium sulfate is discharged along with slag; and, calcium steam in the flue gas enters a boiler flue and undergoes over reaction with sulfur dioxide in the flue, and the generated crystal is removed from the flue gas by an electric dust removing device in the flue. The desulfurization method not only eliminates the pollution of the dust and flue gas generated in the process of producing calcium carbide, but also uses the dust and flue gas to desulfurize the coal fired boiler, so that the method has the advantages of realizing the combat-pollutant-with-pollutant, having good desulfurization effect, and having low desulfurization operation cost, and the desulfurization efficiency is more than 90 percent; moreover, because the dust and flue gas are high in temperature and contain a large amount of coke powder and carbon monoxide, and the dust and flue gas are cofired with coal, the coal is saved.

The invention relates to the field of SO<2> pollutant treatment of coal-fired power plants. The invention aims to solve the problem of high SO<2> emission after desulfurization in the prior art. The invention discloses a coal slime fluidized bed boiler desulfurization collaborative optimization operation method. A desulfurization collaborative optimization operation system comprises the followingmodules: a DCS data acquisition module, an A/D and D/A conversion module, a central processing system module, a prediction control module, a man-machine interaction module and an optimization calculation module. The invention provides the coal slime fluidized bed boiler desulfurization collaborative optimization operation method. According to the method, modeling and optimization calculation are carried out on the process of the whole desulfurization system, and the SO<2> concentration value after optimization calculation is subjected to predictive control, so that the operation cost of the whole desulfurization system is minimized, and the result after optimization solution is subjected to predictive control to obtain the lowest operation cost, thereby realizing the economic and stable operation of SO<2> removal and improving the economic benefits of enterprises.

The method of using salt cement in desulfurizing in liquid column spraying tower includes the following steps: leading fume into liquid column spraying desulfurizing tower while feeding the mixed slurry of salt cement and circulating slurry into the liquid column spraying desulfurizing tower for mixing to desulfurizing; and exhausting the desulfurized fume while circulating partial slurry and exhausting the other. The mixed slurry in the desulfurizing tower has pH 5-9, and the liquid/gas ratio inside the tower is 1-3 vol%. Compared with available technology, the present invention has the advantages of low investment in desulfurizing apparatus, low desulfurizing cost, expanded application range of salt cement, etc.

The invention discloses a technology for removing SO2 in a smoke through a recovery method. Zinc sulfite reacts with SO2 in the smoke in an aqueous solution in a desulfurization tower as a desulfurization agent to generate a soluble zinc salt in order to absorb SO2 in the smoke and purify the smoke. A rich solution after SO2 absorption is heated to generate ZnSO3 and release SO2. The regenerated ZnSO3 is reused for the SO2 absorption, and released SO2 is trapped and recovered, and is used for producing sulfuric acid or an industrial SO2 gas in order to realize resource recovery.

The invention belongs to the field of chemical industry, and specifically relates to a removal method for impurity ions in an organic amine desulfurized solution. The invention is to solve a technicalproblem of providing the removal method for the impurity ions in the organic amine desulfurized solution. The removal method comprises the following steps: allowing an organic amine desulfurized richliquor to pass through a cation resin exchange column of chelated resin so as to adsorb Fe3+ and Cu2+ ions, allowing the obtained organic amine desulfurized rich liquor to enter a regeneration tower,carrying out SO2 regeneration so as to obtain a poor liquor, allowing the poor liquor to pass through an anionic resin exchange column of macroporous weakly basic resin so as to remove Cl-, and allowing the obtained poor liquor to enter a freezing crystallization system so as to remove SO4<2->. The method provided by the invention can purify a used organic amine desulfurizer, reduces poisoning ofthe desulfurizer, stabilizes the effect of desulfurization, reduces the operation cost of desulfurization, and guarantees normal and stable operation of a desulfurization system.

The invention relates to the technical field of power plant gypsum, and discloses a cement performance adjusting method for power plant gypsum production. The method comprises the following steps: proper amounts of lime milk, soda ash, PFS and PAM are sequentially added to reclaimed water of an urban sewage treatment plant according to the quality of water coming from the urban sewage treatment plant in order to deeply treat the reclaimed water, the dosages of above reagents are correspondingly adjusted according to the quality of water coming from the urban sewage treatment plant and water treatment requirements, a mud-water mixture is subjected to mud-water separation through a variable-pore V-shaped filter tank, and clear water is conveyed to a clear water tank. The clinker components,admixture varieties, admixture use amounts, seasons and air temperatures during cement production, mill grinding working conditions and the like in the cement production process affect the quality andhe performances of produced cement, and adjustment of the ratio of the power plant gypsum, comprising an optimized formula of the gypsum and other raw materials, is carried out to timely correspondingly adjusting the formula in order to produce the stable high-strength and high-performance cement, so the method achieves an excellent effect.

The invention discloses a fiber cement product and a production method thereof. The production method includes following steps: (1), adopting a desulfurizing agent to absorb sulfur dioxide in flue gasthrough a wet process so as to form flue gas treatment paste, wherein the desulfurizing agent is size formed by magnesium oxide and industrial wastewater; (2), mixing the flue gas treatment paste, solid waste, magnesium oxide, fiber and additive to form a mixture, wherein a weight ratio of the flue gas treatment paste, the solid waste, the magnesium oxide, the fiber and the additive of 50-80:25-38:3-25:5-20:0.1-15; (3), subjecting the mixture to blank making and maintaining to obtain the fiber cement product. By the method, pollutants like sulfur dioxide in flue gas can be eliminated, and theproblem of treating industrial wastewater and the problem of recycling industrial waste residue and building waste can be solved.

The invention discloses an efficient condensation absorption tower. The efficient condensation absorption tower is characterized in that the efficient condensation absorption tower comprises a tower body; a slurry tank is arranged at the inner side of the lower part of the tower body; the left lower part of the tower body is connected with a flue gas inlet pipe; the joint of the flue gas inlet pipe and the tower body is higher than the liquid level of the slurry tank; the flue gas inlet pipe is obliquely arranged; one end, connected with the tower body, of the flue gas inlet pipe is lower thanthe other end; the upper part of the tower body is connected with a flue gas outlet pipe; and a condensation tray, a spraying area and four layers of demisters are sequentially arranged above the slurry tank in the tower body from bottom to top. According to the invention, exhaust gas temperature can be reduced, part of liquid water is recovered from saturated wet flue gas, and evaporation of water in the absorption tower is reduced, so water replenishment of a wet desulphurization system is reduced.