The invention discloses a multifunctional rare earth sulfur-fixing denitration energy-conservation additive, which solves the problems that the conventional sulfur-fixing agent has relatively low sulfur-fixing rate and does not have the function of reducing NOx emission. The additive is characterized by consisting of the following raw materials in percentage by mass: 8 to 10 percent of rare earth compound, 12 to 15 percent of inorganic salt, 51 to 65 percent of alkaline earth metal compound, 5 to 8 percent of aluminum compound, 5 to 8 percent of zinc compound and 5 to 8 percent of silicon compound. The additive is prepared by the following steps of: grinding the raw materials into fine particles with the particle size of 100 to 300 meshes; proportioning the particles according to the mass percentage at normal temperature; uniformly stirring and mixing; preparing powder from the mixture; and compounding. The additive has the advantages of capability of being popularized in a large area, high sulfur-fixing rate and denitration function and is suitable for coal-smoke type heavily-polluted production links.

Multifunctional rare earth sulfur-fixing denitration energy-conservation additive

The invention relates to a coal-economizing agent and a preparation method thereof. The coal economizing agent consists of the following ingredients by mass percent: 41 to 66.25 percent of saturated lime water under room temperature, 0.75 to 1.25 percent of ferrocene, 5 to 7 percent of No. 97 gasoline; 2 to 2.5 percent of potassium permanganate, 0.5 to 1 percent of cobalt nitrate, 1.5 to 3 percent of emulsifier OP-10, 20 to 37.5 percent of methanol, 2 to 3.75 percent of methylbenzene and 2 to 3 percent of ethyl formate. The preparation method comprises the following steps of mixing the saturated lime water and potassium permanganate, adding cobalt nitrate, then adding the emulsifier OP-10, adding the mixed solution of ferrocene and No.97 gasoline at the temperature of 35 to 45 DEG, adding the methanol at the temperature of 50 to 55 DEG, then adding the methylebenzene, adding ethyl formate, and continuously stirring the mixture under the temperature of 60 to 62 DEG. The preparation process is simple, the production cost is reduced, and the synthesized coal economizing agent has stable chemical properties, good burning performance and good effect for economizing the coal and reducing the pollutant gases.

Coal economizing agent and preparation method thereof

Treatment method for chromium-containing waste residue in steel industry

The invention discloses a municipal domestic garbage biomass environment-friendly renewable energy additive, and a preparation method thereof The additive is advantaged in low cost, combustion supporting, desulphurization, scale removing, boiler coking resistance, and boiler thermal efficiency improving With the additive, municipal domestic garbage combustion heat value can be improved The additive is mainly composed of components of, by mass: 25-35 parts of a combustion additive, 35-55 parts of an oxidizing agent, 25-40 parts of a sulfur fixing agent, and 5-15 parts of an anti-coking agent The preparation method comprises the steps that: cold water is added into quicklime, such that lime cream is prepared for later use; industrial salt, magnesium nitrate, potassium permanganate, and potassium dichromate are dissolved in water, and the mixture is heated, or the materials are directly dissolved in hot water, such that a hot solution is prepared; tween is added into the hot solution, and the mixture is well mixed by stirring; the lime cream is added into the hot solution containing tween, and the mixture is well mixed by stirring; diethyl ether is added to the mixture; a proper amount of hot water is added to the mixture, and the temperature is maintained for 30-60 min The additive and the method provided by the invention can be widely applied in the field of environment-friendly renewable energy

Municipal domestic garbage biomass environment-friendly renewable energy additive, and preparation method thereof

The invention provides an energy-saving coal combustion improver. The coal combustion improver is prepared from the following raw materials: potassium chloride, potassium permanganate, sodium chloride, calcium chloride, ferric oxide, ammonium nitrate, sodium carbonate and aluminum oxide. Compared with the prior art, the coal combustion improver has the following beneficial effects that various chemical components contained in the coal combustion improver rapidly permeate through coal pores and are adsorbed into coal in a few minutes after the coal combustion improver is sprayed to the coal, and when the coal enters a combustion chamber, various chemical components contained in the additive play a role of a catalytic active carrier, so that the ignition point temperature of coal is reduced,the oxidation-reduction reaction of fire coal is enhanced, the catalytic additive gradually releases nascent active oxygen at different temperature sections, the nascent active oxygen is combined with combustibles in the coal, the reaction activation energy is reduced, the combustion is promoted, the working condition is improved, and the pollutant emission is reduced.

Energy-saving coal combustion improver

The invention provides a combustion-supporting desulfurating coal-saving additive which is used in the burning coal in boiler, the preparation of which is composed of 24-35 percent combustion improvers of methanol, aether, tween-80; 32-38 percent oxidants of potassium permanganate, potassium chlorate and potassium dichromate; 4-28 percent desulfurizer in which quicklime, potassium permanganate, potassium chlorate and potassium dichromate take part in; 18-22 percent anti-coking agent which contains potassium dichromate and quicklime; the rest is water, which complement the total volume of the additive to be 100 percent. The additive is prepared by adding water in the quicklime to produce lime cream; heating the water for acting as solution, after potassium permanganate, potassium chlorate and potassium dichromate are added into the solution and are stirred evenly; adding and mixing the methanol and tween-80 into the solution evenly, and then adding and mixing the lime cream into the solution evenly; finally adding and mixing the aether into the solution evenly; and preserving the heat for 1 hour. The invention can improve the desulfurization rate by 40 percent, improve the coal saving rate by 25 percent, and improve the thermal efficiency of the boiler by up to 5-10 percent; and can prevent the occurrence of boiler coking accident.

Xingze Zhou

Papers

Combustion-supporting, desulfurization and coal-saving additive used for boiler fire coal