WO2019062450A1 - Agent de désulfuration et de dénitration de gaz de combustion, son procédé de production et son application - Google Patents

Agent de désulfuration et de dénitration de gaz de combustion, son procédé de production et son application Download PDF

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WO2019062450A1
WO2019062450A1 PCT/CN2018/103026 CN2018103026W WO2019062450A1 WO 2019062450 A1 WO2019062450 A1 WO 2019062450A1 CN 2018103026 W CN2018103026 W CN 2018103026W WO 2019062450 A1 WO2019062450 A1 WO 2019062450A1
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weight
parts
nano
desulfurization
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童裳慧
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中晶环境科技股份有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/90—Injecting reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8637—Simultaneously removing sulfur oxides and nitrogen oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/10—Oxidants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/30—Alkali metal compounds
    • B01D2251/306—Alkali metal compounds of potassium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/602—Oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2065—Cerium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20723—Vanadium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/2073—Manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20738—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20746—Cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

Definitions

  • the invention relates to a flue gas desulfurization and denitration agent, a production method and application thereof, in particular to a dry desulfurization and denitration agent, a production method thereof and a flue gas dry denitration method.
  • Air pollution control has become the theme of environmental governance in the modern era. Large air pollution mainly meant to include SO 2 and nitrogen oxides NO x. China is a big country in terms of coal reserves and production, and a major energy consumer. For a long period of time, China's primary energy-based coal-based pattern will not change. Coal combustion flue gas containing a large amount of SO 2 and NO x, if not controlled, would cause further contamination of the air mass. Thus, to reduce emissions of NO x and SO 2 become a top priority.
  • SO 2 removal technologies include limestone - gypsum method, ammonia method and circulating fluidized bed (CFB) and the like;
  • NO x removal technologies include selective catalytic reduction (SCR) , selective non-catalytic reduction (SNCR) and oxidative absorption methods.
  • the dry desulfurization process has begun to be used, generally using a circulating fluidized bed process, using calcium hydroxide as an absorbent, and a venturi fluidized bed column as a desulfurization reactor.
  • a high-density, fiercely turbulent particle bed is formed in the upper part of the desulfurization tower Venturi, and the temperature of the flue gas is lowered to 15-20 ° C above the dew point by water injection, and the relative sliding speed generated between the flue gas and the absorbent particles is utilized. Achieve the purpose of efficient desulfurization.
  • CN103386250A discloses a dry desulfurization method, which uses calcium hydroxide as a desulfurization absorbent, and selects one or several of ozone, inorganic peroxide, chlorate, perchlorate, permanganate and ferrate.
  • the desulfurization absorbent and the synergistic additive are mixed with the original flue gas in the reaction tower, and the net flue gas after desulfurization is obtained after the reaction. Since the dry desulfurization system has higher effect on the removal of sulfur trioxide than sulfur dioxide, the addition of synergistic additives in the dry desulfurization process can significantly remove the sulfur dioxide in the flue gas.
  • the preparation method of such a desulfurizing agent is complicated, and there is no mention of whether the calcium desulfurizing agent has the ability to remove nitrogen oxides.
  • the SCR method has high desulfurization and denitrification efficiency, and the emission standard can reach 90%, but the process complexity, system investment cost and subsequent operation and processing cost are high.
  • the SNCR method has less investment, and the subsequent operation cost is lower, but the desulfurization and denitration efficiency can only reach 60%, which can not meet the increasingly stringent emission requirements.
  • An object of the present invention is to provide a desulfurization and denitration agent which has high desulfurization and denitration efficiency.
  • Another object of the present invention is to provide a method for producing a desulfurization and denitration agent which is simple in process and low in cost.
  • the present invention achieves the above object by the following technical solutions.
  • the invention provides a flue gas desulfurization denitration agent, which comprises the following components based on 100 parts by weight of a desulfurization denitration agent:
  • the desulfurization denitration agent comprises the following components based on 100 parts by weight of the desulfurization denitration agent:
  • the desulfurization denitration agent comprises the following components based on 100 parts by weight of the desulfurization denitration agent:
  • MgO is composed of micron-sized magnesium oxide and nano-sized magnesium oxide, and nano-scale magnesium oxide is 10 to 20 parts by weight
  • CaO is composed of micro-sized calcium oxide and nano-sized calcium oxide, and The nano-scale calcium oxide is 0.1 to 2 parts by weight
  • the SiO 2 is composed of micro-scale silica and nano-scale silica, and the nano-scale silica is 2 to 5 parts by weight
  • the V 2 O 5 includes the nano-scale pentoxide Vanadium, and nano-scale vanadium pentoxide is 0.1-0.3 parts by weight
  • Fe 2 O 3 includes nano-scale ferric oxide, and nano-scale iron oxide is 0.1-0.3 parts by weight
  • CeO 2 includes nano-sized cerium oxide And the nano-sized cerium oxide is 0.1-0.3 parts by weight
  • the CoO comprises nano-sized cobalt monoxide, and the nano-sized cobalt monoxide is 0.1-0.3 parts by weight
  • the Co 2 O 3 comprises nano-sized cobalt monoxide, and the
  • the nanometer magnesium oxide is 15 to 20 parts by weight; the nano-sized calcium oxide is 0.8 to 2 parts by weight; the nano-sized silica is 2.5 to 5 parts by weight; and the nano-sized pentoxide is used.
  • Vanadium is 0.2-0.3 parts by weight; nano-sized ferric oxide is 0.2-0.3 parts by weight; nano-sized cerium oxide is 0.1-0.2 parts by weight; nano-sized cobalt oxide is 0.1-0.2 parts by weight; nano-scale oxidized two The cobalt is 0.1 to 0.2 parts by weight; the nano-sized aluminum oxide is 0.1 to 0.2 parts by weight; and the nano-sized manganese dioxide is 5 to 6 parts by weight.
  • the active magnesium oxide content in MgO is from 60 to 85 wt%.
  • the active magnesium oxide content in MgO is from 65 to 80% by weight.
  • the desulfurization denitration agent is a flue gas dry desulfurization denitration agent.
  • the present invention also provides a method for producing a desulfurization and denitration agent comprising the step of uniformly mixing the components.
  • the invention also provides a method for dry flue gas desulfurization and denitrification, wherein the above desulfurization and denitration agent is formed into a dry powder form, and then fully contacted with the flue gas for more than 30 minutes, thereby removing sulfur dioxide and nitrogen oxides in the flue gas; wherein, the smoke The gas has a sulfur dioxide content of 1000 to 5000 mg/Nm 3 , a nitrogen oxide content of 100 to 600 mg/Nm 3 , a flow rate of 2 to 5 m/s, and a temperature of 105 to 160 °C.
  • the desulfurization denitration agent of the present invention contains one or more metal oxides on the order of micrometers and nanometers.
  • Nano-sized metal oxides have a special nanostructure and can be used as modifiers and catalysts to improve the removal efficiency and rate of magnesium oxide to sulfur dioxide and nitrogen oxides.
  • a suitable amount of a nano-sized metal or non-metal inorganic oxide can further enhance the flue gas desulfurization and denitration effect.
  • the micron order means 1 to 100 ⁇ m, preferably 1 to 10 ⁇ m, more preferably 1 to 5 ⁇ m; and the nanometer scale means 1 to 100 nm, preferably 10 to 60 nm.
  • the desulfurization and denitration agent of the present invention comprises magnesium oxide of a nanometer and micrometer order and a modifier.
  • Modifiers mainly include nano- and micro-scale calcium oxide, silicon dioxide, vanadium pentoxide, iron oxide, cerium oxide, cobalt monoxide, cobalt sulphate, aluminum oxide, manganese dioxide, potassium permanganate. .
  • the present inventors have found that combining these modifiers with magnesium oxide can significantly improve the flue gas desulfurization and denitration effect.
  • V 2 O 5 can oxidize sulfur dioxide to sulfur trioxide, thereby being absorbed by the alkaline substance in the absorbent to form a sulfate.
  • Fe 2 O 3 , CoO, Co 2 O 3 and MnO 2 have a catalytic oxidation effect on NO, and the NO catalyst can be oxidized to NO 2 to be absorbed by the alkaline substance in the absorbent to form a nitrate.
  • V 2 O 5 , CeO 2 and MnO 2 can catalytically oxidize SO 2 to SO 3 , and SO 3 reacts with a basic substance to form a sulfate.
  • the desulfurization and denitration agent of the present invention achieves the purpose of simultaneous desulfurization and denitrification.
  • MgO is 70 to 90 parts by weight, preferably 75 to 85 parts by weight, and more preferably 80 to 81.5 parts by weight.
  • the active magnesium oxide content in the MgO may be from 60 to 85 wt%, preferably from 65 to 80 wt%, more preferably from 70 to 85 wt%. This is beneficial to improve the absorption effect of sulfur trioxide and nitrogen dioxide, thereby improving the desulfurization and denitration effect.
  • the MgO may be composed of micron-sized magnesium oxide and nano-sized magnesium oxide, and the nano-sized magnesium oxide is 10 to 20 parts by weight; preferably 15 to 20 parts by weight. This can further improve the desulfurization and denitration effect.
  • CaO is 0.1 to 3 parts by weight, preferably 0.2 to 2 parts by weight, more preferably 0.5 to 1 part by weight.
  • CaO is composed of micron-sized calcium oxide and nano-sized calcium oxide, and the nano-sized calcium oxide is 0.1 to 2 parts by weight; preferably 0.8 to 2 parts by weight.
  • Calcium oxide can assist in the absorption of sulfur trioxide and nitrogen dioxide, thereby improving the desulfurization and denitrification effect.
  • SiO 2 is 2 to 10 parts by weight, preferably 3 to 8 parts by weight, more preferably 3 to 5 parts by weight.
  • SiO 2 is composed of micron-sized silica and nano-sized silica, and the nano-sized silica is 2 to 5 parts by weight; preferably 2.5 to 5 parts by weight.
  • Silica promotes the catalytic oxidation effect, thereby improving the desulfurization and denitration effect.
  • V 2 O 5 is 0.1 to 0.5 part by weight, preferably 0.15 to 0.4 part by weight, more preferably 0.25 to 0.4 part by weight.
  • V 2 O 5 includes nano-sized vanadium pentoxide, and the nano-sized vanadium pentoxide is 0.1 to 0.3 parts by weight; preferably 0.2 to 0.3 parts by weight.
  • Fe 2 O 3 is 0.1 to 0.5 part by weight, preferably 0.15 to 0.4 part by weight, more preferably 0.25 to 0.4 part by weight.
  • the Fe 2 O 3 includes nano-sized iron oxide, and the nano-sized iron oxide is 0.1 to 0.3 parts by weight; preferably 0.2 to 0.3 parts by weight.
  • Fe 2 O 3 can oxidize nitric oxide. Controlling Fe 2 O 3 in the above range can improve the denitration effect and save costs.
  • CeO 2 is 0.1 to 0.4 parts by weight, preferably 0.15 to 0.3 parts by weight, and more preferably 0.15 to 0.25 parts by weight.
  • CeO 2 is composed of micron-sized ceria and nano-sized ceria, and the nano-sized ceria is 0.1 to 0.3 parts by weight; preferably 0.1 to 0.2 parts by weight.
  • CoO is 0.1 to 0.4 parts by weight, preferably 0.15 to 0.3 parts by weight, more preferably 0.15 to 0.25 parts by weight.
  • the CoO includes nano-sized cobalt monoxide, and the nano-sized cobalt monoxide is 0.1 to 0.3 parts by weight; preferably 0.1 to 0.2 parts by weight. Controlling the CoO within the above range can improve the denitration effect and save costs.
  • Co 2 O 3 is 0.1 to 0.4 parts by weight, preferably 0.15 to 0.3 parts by weight, and more preferably 0.15 to 0.25 parts by weight.
  • Co 2 O 3 includes nano-sized cobalt pentoxide, and the nano-sized cobalt oxide is 0.1 to 0.3 parts by weight; preferably 0.1 to 0.2 parts by weight.
  • Co 2 O 3 can oxidize nitric oxide. Controlling Co 2 O 3 in the above range can improve the denitration effect and save costs.
  • Al 2 O 3 is 0.1 to 0.4 parts by weight, preferably 0.15 to 0.3 parts by weight, and more preferably 0.15 to 0.25 parts by weight.
  • Al 2 O 3 includes nano-sized aluminum oxide, and the nano-sized aluminum oxide is 0.1 to 0.3 parts by weight; preferably 0.1 to 0.2 parts by weight.
  • Al 2 O 3 can improve the catalytic oxidation effect, thereby improving the desulfurization and denitration efficiency.
  • MnO 2 is 5 to 10 parts by weight, preferably 7 to 9 parts by weight, and more preferably 8 to 9 parts by weight.
  • MnO 2 includes nano-sized manganese dioxide, and the nano-sized manganese dioxide is 5 to 8 parts by weight; preferably 5 to 6 parts by weight.
  • MnO 2 can oxidize nitrogen monoxide and sulfur dioxide.
  • KMnO 4 is 3 to 8 parts by weight, preferably 5 to 8 parts by weight, more preferably 5 to 6 parts by weight.
  • KMnO 4 includes nano-scale potassium permanganate, and the nano-scale potassium permanganate is 3 to 5 parts by weight.
  • KMnO 4 can oxidize nitrogen monoxide and sulfur dioxide. By controlling KMnO 4 within the above range, the desulfurization and denitration effect and the amount of use can be achieved, thereby reducing the cost.
  • the desulfurization and denitration agent of the invention is a flue gas dry desulfurization denitration agent. Dry flue gas desulfurization and denitrification is also called dry flue gas desulfurization and denitrification, which means that the flue gas is desulfurized and denitrated without using slurry.
  • the dry flue gas desulfurization and denitration of the present invention is different from the wet flue gas desulfurization and denitrification, which does not require the use of a large amount of slurry, thereby avoiding the production of a large amount of industrial waste liquid.
  • the desulfurization and denitration agent of the present invention may be in the form of a powder, which is advantageous for increasing the contact area of the gas-solid reaction, thereby improving the reaction efficiency.
  • the desulfurization and denitration agent of the present invention can be obtained by a conventional method in the art.
  • the above components are pulverized to form a powder, and then they are uniformly mixed.
  • the desulfurization and denitration agent of the present invention may have a particle diameter of 0.1 to 100 ⁇ m, preferably 0.5 to 10 ⁇ m, more preferably 1 to 5 ⁇ m.
  • magnesium oxide, calcium oxide, aluminum oxide, manganese dioxide, silicon dioxide, vanadium pentoxide, ferric oxide, cerium oxide, cobalt monoxide, and trioxide are used.
  • a powdery raw material such as cobalt or potassium permanganate is uniformly mixed to obtain a dry powdery desulfurization denitration agent.
  • the method of the invention comprises a flue gas denitration step: forming the above-mentioned desulfurization and denitration agent into a dry powder form, and then sufficiently contacting with the flue gas (for example, pre-dusting flue gas) for more than 30 minutes, thereby removing nitrogen oxides in the flue gas; wherein, the smoke
  • the gas has a sulfur dioxide content of 1000 to 5000 mg/Nm 3 , a nitrogen oxide content of 100 to 600 mg/Nm 3 , a flow rate of 2 to 5 m/s, and a temperature of 105 to 160 °C.
  • a pre-dusting step is preferably included: the flue gas is pre-dusted to remove a majority of the dust particles to form a pre-dusting flue gas.
  • the above steps can be carried out in a pre-dusting device, the specific structure of which can be those well known in the art, such as an electrostatic precipitator.
  • the pre-dusting efficiency of the present invention may be 90% or more, preferably 95% or more. This can reduce the load of the subsequent process and improve the operational stability of denitration.
  • the sulfur dioxide content of the flue gas may be 1000 to 5000 mg/Nm 3 , preferably 1500 to 3500 mg/Nm 3 , more preferably 1600 to 2500 mg/Nm 3 .
  • the nitrogen oxide content of the flue gas may be from 100 to 600 mg/Nm 3 , preferably from 200 to 500 mg/Nm 3 , more preferably from 300 to 500 mg/Nm 3 .
  • the flow rate of the flue gas may be 2 to 5 m/s, preferably 2.5 to 3.5 m/s.
  • the temperature may be from 105 to 160 ° C; preferably from 120 to 135 ° C.
  • the oxygen content may be 10 to 25 vol%, preferably 15 to 20 vol%.
  • the above flue gas parameters all indicate the parameters at the flue gas inlet; the parameters at the flue gas outlet are determined according to the actual denitration conditions. The use of the above process parameters is beneficial to improve the efficiency of desulfurization and denitrification.
  • the flue gas denitration step of the present invention can be carried out in a desulfurization and denitration apparatus.
  • the desulfurization and denitration device can be a circulating fluidized bed absorption tower, so that the desulfurization and denitration agent can be fully contacted with the pre-dusting flue gas to improve the desulfurization and denitration effect.
  • the contact time between the desulfurization and denitration agent and the pre-dusting flue gas may be more than 30 minutes, for example, 30 to 60 minutes, preferably 35 to 50 minutes. This can balance the desulfurization and denitration effects and the flue gas treatment efficiency.
  • the dry powder of the desulfurization and denitrification agent is thoroughly mixed with the pre-dusting flue gas in the flue gas pipeline, and then enters the absorption tower for desulfurization and denitrification treatment, and the treated flue gas is discharged by the chimney.
  • a dust removing step may be further included: separating the treated flue gas in a bag dust removing device to obtain purified flue gas and powdery by-products.
  • the components were uniformly mixed according to the formulation of Table 1, to obtain a desulfurization denitration agent F1.
  • the desulfurization and denitration agent is used for dry desulfurization and denitration, and the flow rate of the flue gas is 2.5 m/s; other parameters of the flue gas inlet and the parameters of the flue gas outlet are shown in Tables 2 and 3.
  • the desulfurization and denitration agent is used for dry desulfurization and denitration.
  • the concentration of sulfur dioxide in the flue gas after purification is 47 mg/Nm 3
  • the concentration of nitrogen oxide is 99 mg/Nm 3 .
  • the desulfurization efficiency reached 97.94%, and the denitration efficiency was 84.59%.
  • Serial number project Quantity unit 1 Export smoke volume (working conditions) 458300 m 3 /h 2 exhaust temperature 65 °C 3 Sulfur dioxide emission concentration 47 Mg/Nm 3 4 Desulfurization efficiency 97.94 % 5 NOx emission concentration 99 Mg/Nm 3 6 Denitration efficiency 84.59 % 7 Output of by-products 5.46 t/h
  • the components were uniformly mixed according to the formulation of Table 4 to obtain a desulfurization denitration agent F2.
  • the desulfurization and denitration agent is used for dry desulfurization and denitration.
  • the concentration of sulfur dioxide in the flue gas after purification is 34 mg/Nm 3
  • the concentration of nitrogen oxide is 78 mg/Nm 3 .
  • the desulfurization efficiency reached 98.58%, and the denitration efficiency was 88.49%.
  • the flue gas inlet parameters are the same as in the first embodiment, and the parameters of the flue gas outlet are shown in Table 5.
  • Serial number project Quantity unit 1 Export smoke volume (working conditions) 458300 m 3 /h 2 exhaust temperature 65 °C 3 Sulfur dioxide emission concentration 34 Mg/Nm 3 4 Desulfurization efficiency 98.58 %
  • Serial number project Quantity unit 1 Export smoke volume (working conditions) 458300 m 3 /h 2 exhaust temperature 65 °C 3 Sulfur dioxide emission concentration 26 Mg/Nm 3 4 Desulfurization efficiency 98.92 % 5 NOx emission concentration 66 Mg/Nm 3 6 Denitration efficiency 90.23 % 7 Output of by-products 5.59 t/h

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  • Environmental & Geological Engineering (AREA)
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Abstract

L'invention concerne un agent de désulfuration et de dénitration de gaz de combustion, un procédé de production et une application de cet agent. Sur la base de 100 parties en poids de l'agent de désulfuration et de dénitration, l'agent de désulfuration et de dénitration comprend les composants suivants, en poids : de 70 à 90 parties de MgO, de 0,1 à 3 parties de CaO, de 2 à 10 parties de SiO2, de 0,1 à 0,5 partie de V2O5, de 0,1 à 0,5 partie de Fe2O3; de 0,1 à 0,4 partie de Co2O3, de 0,1 à 0.4 partie d'Al2O3, de 5 à 10 parties de MnO2, et de 3 à 8 parties de KMnO4. L'agent de désulfuration et de dénitration de gaz de combustion de la présente invention offre un rendement de désulfuration et de dénitration élevé.
PCT/CN2018/103026 2017-09-30 2018-08-29 Agent de désulfuration et de dénitration de gaz de combustion, son procédé de production et son application WO2019062450A1 (fr)

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CN113731498A (zh) * 2021-09-16 2021-12-03 山东中移能节能环保科技股份有限公司 一种焦炉烟气脱硝剂催化剂及其制备方法

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CN107485990A (zh) * 2017-09-30 2017-12-19 中晶蓝实业有限公司 烟气脱硫脱硝剂及其生产方法和应用
CN107441932A (zh) * 2017-09-30 2017-12-08 中晶蓝实业有限公司 烟气脱硫剂及其生产方法和应用
CN108300525B (zh) * 2018-02-12 2020-04-17 李志刚 一种燃料调质器填料及其制备方法
CN113663504A (zh) * 2021-08-27 2021-11-19 中晶环境科技股份有限公司 脱硫脱硝固体颗粒及其制备方法和用途

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