Abstract: A micro-spherical iron-based catalyst and a preparation method thereof are disclosed. The catalyst contains a potassium promoter, and at least one transitional metal promoter M which is one or more kinds of metals selected from Cr, Cu, Mn and Zn. It also contains a structure promoter S, which is SiO2 and/or Al2O3, wherein both of SiO2 and Al2O3 are modified by MoO3, TiO2 and/or ZrO2. The weight ratio of components is Fe:M:K:S=100:3-50:1-8:3-50, in which the metal components are calculated based on metal elements, the structure promoter is calculated based on oxides. The catalyst is prepared by co-precipitation method.

Abstract: This invention relates to a Fe-based catalyst for Fischer-Tropsch synthesis, preparation method and application thereof. The catalyst contains Fe, oxide(s) of IB group metal Cu and/or Ag as a reducing promoter, IA group metal Li, Na, K or Rb as an electron promoter, VIII group noble metal Ru, Rh, Pd or Pt as a hydrogenation promoter and SiO2 as a structure promoter. The preparation method comprises the following steps: preparing a solution of Fe salt; co-precipitating the solution rapidly with an alkaline compound, then washing and pulping again; and adding a solution of IB group metal salt as a reducing promoter, a IA group metal salt solution and silica sol, or adding a solution of IB group metal salt as a reducing promoter and a silicate of IA group metal; then molding by spray-drying, impregnating in a solution of VIII group noble metal salt, and drying and roasting to obtain the catalyst. The catalyst is suitable for producing hydrocarbons by a low temperature Fischer-Tropsch synthesis process.

Abstract: A method for continuously preparing a metal oxides catalyst comprises the following steps: dissolving metal materials using nitric acid solution to produce a metal nitrate solution, and also to produce NOx and water vapor; hydrolyzing the metal nitrate solution by introducing pressurized superheated water vapor into the metal nitrate solution to obtain a slurry of the hydrates of metal oxides as well as acidic gas, the main components of the acidic gas are NO2, NO, O2 and water vapor; filtrating and drying the slurry to obtain the hydrates of metal oxides and/or metal oxides; and then utilizing the obtained hydrates of metal oxides and/or metal oxides as raw materials and preparing the metal oxides catalyst by the conventional method for preparing a catalyst. The NOx gas produced can be absorbed to produce nitric acid which can be reused.

Abstract: A method for multistage transforming carbonaceous solid fuel to oil, includes mixing solid fuel (17) with heavy oil (40) to obtain fuel-oil slurry; heating and dehydrating of the slurry; liquefying of the slurry by hydrogenation under a low-medium pressure to obtain light oil (25) and heavy oil-residue slurry; hydrorefining the light oil (25) to obtain refined oil; gasifying the heavy oil-residue slurry in a gasifier (11) to obtain syngas (47); producing F-T synthesis oil (52) with the syngas (47); hydrorefining and hydrocracking the F-T synthesis oil (52) to obtain refined oil; mixing the refined oil from the F-T synthesis oil with the refined oil from liquefying by hydrogenation for producing high quality oil with low sulfur and low ammonia, and other chemical product. The method can be applied to various kinds of coals and biomass, especially applied to lignite and biomass. A suspended bed reactor for liquefying of carbonaceous solid fuel by hydrogenation is also disclosed.

Abstract: A Fischer-Tropsch synthesis three-phase suspension bed reactor (“suspension bed” also called “slurry bed”) and its supplemental systems, may include: 1) structure and dimension design of F-T synthesis reactor, 2) a gas distributor located at the bottom of the reactor, 3) structure and arrangement of a heat exchanger members inside the reactor, 4) a liquid-solid filtration separation device inside reactor, 5) a flow guidance device inside reactor, 6) a condensate flux and separation member located in the gas phase space at the top of reactor, 7) a pressure stabilizer, a cleaning system for the separation device; an online cleaning system for the gas distributor; an ancillary system for slurry deposition and a pre-condensate and mist separation system located at the outlet of upper reactor. This reactor is suitable for industrial scale application of Fischer-Tropsch synthesis.

Abstract: The present invention discloses a transition metal nano-catalyst, a method for preparing the same, and a process for Fischer-Tropsch synthesis using the catalyst. The transition metal nano-catalyst comprises transition metal nanoparticles and polymer stabilizers, and the transition metal nanoparticles are dispersed in liquid media to form stable colloids. The transition metal nano-catalyst can be prepared by mixing and dispersing transition metal salts and polymer stabilizers in liquid media, and then reducing the transition metal salts with hydrogen at 100-200° C. The nano-catalyst can be used for F-T synthesis reaction. The process for F-T synthesis using the nano-catalyst comprises contacting a reactant gas mixture comprising carbon monoxide and hydrogen with the catalyst and reacting. The catalyst can rotate freely in three-dimensional space under reaction conditions, and have excellent catalystic activity at a low temperature of 100-200° C.