5 results about "Carbon deposit" patented technology

The invention belongs to the technical field of waste head and complementary energy recovery in iron and steel Industry, and in particular relates to a method for preparing methanol by sensible heat of blast furnace slag. The method comprises the following steps: blast furnace slag enters into a sensible heat recovery device; reactants enter into a grain slag packed bed to be preheated, and enter into a graining reactor when the temperature reaches 600 DEG C; the reactants enter into the graining reactor for reaction at 850 DEG C and at one barometric pressure to generate methanol. High temperature residual heat resources of liquid blast furnace slag are efficiently, economically and environment-friendlily used in an energy-saving manner. Treated blast furnace slag can meet the demand of cement manufacturing, and methanol produced belongs to a product widely applied with high additional value. Ternary reforming reaction of methane can realize part of self-heat supply, so that the energy efficiency in the reaction process is greatly enhanced, the cost is lowered, and carbon deposited on the surface of the catalyst can be alleviated or even eliminated. Coke oven gas resource is adequately utilized, the energy resource is saved, carbon dioxide in flue gas is utilized, and emission of greenhouse gases is reduced, so that the method is energy-saving and environment-friendly.

The invention discloses a method for preparing hydrogen by utilizing waste biomass, and the method comprises the following steps of: firstly, processing the waste biomass into semi-finished product fluid slurry; then, carrying out water vapor gasification treatment on the semi-finished product fluid slurry, thus obtaining crude oil; carrying out supercritical water gasification treatment on the crude oil, thus obtaining crude bio-gas; and finally, carrying out low-temperature transformation treatment on the crude bio-gas, thus obtaining transformed gas. The hydrogen is prepared by two-step gasification and low-temperature transformation, so that the biomass gasification efficiency is high, tar carbon deposit blockage can be avoided, continuous feeding is realized, and the prepared hydrogen is high in purity; furthermore, in the low-temperature transformation treatment, precious metals and rare-earth elements are added on the basis of a copper-zinc-aluminum catalyst, so that the reaction temperature is remarkably reduced, the activity and stability of the catalyst are improved, and the conversion rate of CO is high during the low-temperature transformation treatment.

The invention discloses a fuel oil additive mixture, which is composed of the following formula components by mass percentage: 20-50 parts of triethylamine, 30-50 parts of ethylene glycol, 30-50 parts of ethylenediamine, 15-50 parts of acetone, 20-40 parts of ethyl acetate, 30-40 parts of isooctyl nitrate, 20-40 parts of nano-iron oxide, 30-50 parts of glyceryl monooleate, 10-30 parts of palmitic acid, 5-10 parts of carbon tetrachloride, and 10-30 parts of propylene dichloride. The fuel oil additive mixture provided by the invention can clear carbon deposit, clean the fuel oil system, enhance the power performance, improve atomization, save fuel oil, prevent corrosion, prevent rust and lubricate, protect the engine, reduce noise, reduce wear, prolong the engine life, eliminate black smoke, and lower emission.

The invention relates to the technical field of chemical tail gas treatment, and discloses a catalyst and a catalytic oxidation deoxidation method for unsaturated hydrocarbon-containing gas by using the catalyst. The catalyst contains a carrier, and an active component, a first auxiliary agent component and a second auxiliary agent component which are loaded on the carrier, wherein the active component is selected from one or more of oxides of Pt, Pd, Ru, Rh, Ag and Ir; the first auxiliary agent component contains one or more of rare earth metal elements, IVB group metal elements and VIII group metal elements, and the second auxiliary agent component contains one or more of alkali metal elements and alkaline earth metal elements. According to the deoxidation method using the catalyst, reducing gas such as H2 does not need to be added, hydrocarbon and oxygen directly react to generate CO2 and H2O, the purpose of deoxidizing hydrocarbon-containing tail gas is achieved, and carbon deposition can be prevented.