36results about How to "Facilitated catalytic cracking" patented technology

The invention discloses a preparation method of beta molecular sieve. Step 1, synthesizing initial gel: mix silicon source, aluminum source, alkaline metal source, water, stir evenly, and synthesize initial gel; silicon source is SiO 2 In terms of aluminum source as Al 2 o 3 In terms of alkaline metal sources as Na 2 In terms of O, the molar ratio of raw materials for synthesizing the initial gel is: SiO 2 / Al 2 o 3 =30~150:1, Na 2 O / SiO 2 =0.03~0.35:1, H 2 O / SiO 2 =3.0~50.0:1; step 2, microwave treatment of the initial gel: add β molecular sieve seed crystals to the initial gel prepared in step 1, the ratio of silicon to aluminum to SiO 2 / Al 2 o 3 =20~100:1, the amount added is calculated as SiO by mass 2 3% to 25% of the mass, mixed evenly and heated with microwaves to obtain a crystallized precursor gel; step 3, crystallization reaction: crystallize the crystallized precursor gel obtained in step 2 with microwave heating Reaction, the reaction temperature is 140°C-180°C, the reaction time is 4-20h, and the β molecular sieve product is obtained. The molecular sieve obtained by the method of the invention has small particle size, rich pore structure, and relatively unobstructed channels, which is beneficial to promoting catalytic cracking and isomerization.

The invention belongs to the technical field of iron smelting and discloses a biomass gasification and directly-reduced iron co-production method and additives for the same. The method includes: subjecting iron-containing raw materials, biomass, the additives and a binding agent to mixed agglomeration to obtain iron-containing agglomerates; heating the iron-containing agglomerates in a high-temperature container, so that the biomass is gasified to generate combustible gas, and iron oxides are reduced to generate directly-reduced iron, wherein the additives include sodium carbonate, laterite-nickel ore, dolomite and plant ash. By the additives, thermal stability of the biomass and decomposed products thereof are reduced; the biomass serves as an iron oxide reducing agent and a C source and an H source of the combustible gas, the iron oxides serve as an iron source for steel preparation and an oxygen source in carbon reaction for CO generation, and accordingly catalytic cracking of tar and the biomass and the decomposed products thereof is promoted, and the metallization ratio of the directly-reduced iron is increased while biomass gasification yield is increased.

The invention discloses a catalytic cracking catalyst as well as a preparation method and an application thereof. The catalyst takes kaolin or montmorillonoid as a carrier and takes molybdenum naphthenate and / or iron naphthenate as an active component. The preparation method comprises steps as follows: kaolin or montmorillonoid raw powder is added to a reactor after being calcined at the high temperature, a diluted acid impregnation liquid of molybdenum naphthenate and / or iron naphthenate is added for impregnation, a reacted material is dried, and the catalytic cracking catalyst is prepared. The catalytic cracking catalyst can be applied to a process for treating cellulose and waste plastic, the total conversion rate of cellulose and waste plastic is increased, a target reaction is promoted, and the liquid yield is increased.

A low-rank fuel low-temperature gasification device based on screw pyrolyzers and a fluidized bed gasifier belongs to the field of gasification of low-rank fuels. The power output shaft of a motor 1 is connected with the power input shaft of a transmission gearbox in a transmission mode, a first-order screw pyrolyzer is mutually coupled with a gas lock device through a transmission gearbox, the screw shaft of the first-order screw pyrolyzer is connected with the screw shaft of a second-order screw pyrolyzer through a shaft coupling, and the second-order screw pyrolyzer communicates with the fluidized bed gasifier; the upper part of the second-order screw pyrolyzer is provided with a water vapor inlet; the fluidized bed gasifier communicates with a cyclone separator, the fluidized bed gasifier communicates with a gas inlet system, and a residue discharging tube communicates with the bottom of the fluidized bed gasifier; and the cyclone separator communicates with a first-stage return tube, the first-order return tube communicates with a screw return device, the screw return device communicates with a second-order return tube, and the second-order return tube communicates with the second-order screw pyrolyzer. The in-situ catalytic cracking of parts of tar by pyrolytic coke and the re-adsorbed alkali metal and alkali earth metal catalyzed low-temperature gasification of coal coke are used to realize the high-efficiency low-temperature gasification of the low-rank fuel.

The invention discloses a catalytic cracking catalyst, as well as a preparation method and application thereof. The catalyst adopts kaolin and montmorillonoid as carriers, and adopts molybdenum naphthenate and / or iron naphthenate as an active component. The preparation method comprises the steps of performing high-temperature roasting on kaolin and montmorillonoid raw powder, adding into a reactor, then adding a dilute acid impregnation liquid of iron naphthenate and / or molybdenum naphthenate for impregnating, drying a reacted material, and obtaining the catalytic cracking catalyst. The catalytic cracking catalyst can be applied to cellulose and waste plastic treatment processes, and not only the total conversion rate of cellulose and waste plastic is improved, but also the target responseis promoted, so that the liquid yield is improved.

The invention discloses a gas iron co-production method for preparing a high-strength iron-contained block mass with biomass as an adhesive carrier, and belongs to the technical field of steel iron smelting. According to the preparing method of the iron-contained block mass, iron-contained raw materials, biomass and an addition agent are mixed, and are subject to hot pressing through a briquetting machine to obtain the iron-contained block mass, and the biomass is subject to modification treatment through a modification solution. According to the specific method, the biomass is immersed into the modified solution to be modified, the modified biomass, the iron-contained raw material and the addition agent are mixed and pressurized, the iron-contained block mass is prepared, the mass is heated in a high-temperature container, the biomass is gasified into combustible gas, and an iron oxide is reduced to generate direct reduction iron. The biomass serves as a reduction agent of the iron oxide and a C source and an H source of combustible gas, the iron oxide serves as an iron source and an oxygen source, a bonding agent does not need to be added, the strength of the iron-contained block mass is improved, the biomass gasifying yield is improved, and meanwhile, the metallization rati of iron direct reduction is improved.