Fe/pressed active carbon catalyst and preparation method thereof

Abstract

The invention discloses a catalytic conversion agent of tar in gas for a biomass boiler, which consists of the following ingredients by weight percent: 0.1% to 0.3% of Na2CO3, 0.1% to 0.3% of K2CO3, 0.1% to 1% of Fe3O4, 0.5% to 0.8% of NaCl, 0.5% to 0.8% of KCl, 0.3% to 0.5% of KOH, 0.3% to 0.5% of NaOH, 0.1 to 1% of Ni(NO3)2 6H2O, 0.1 to 1% of KNO3, 0.1 to 0.5% of Ce(NO3)3 6H2O, 20% to 46% of dry attapulgite powder and 46% to 75% of dry dolomite powder, wherein the dry dolomite powder is the dry powder with the grain size not less than 325 meshes, the water content less than 1% and the CaCO3/MgCO3 ratio ranging from 1 to 1.5, and the dry attapulgite powder has the grain size not less than 325 meshes, the water content is less than 1%, the content of MgO is not less than 23% and the content of SiO2 is not more than 56%. By using the catalyst, tar in biomass gasified gas can be converted into combustible small molecules, so as to reduce the hazard caused by tar remarkably.

Description

technical field [0001] The invention provides a Fe / formed activated carbon catalyst and a preparation method thereof, the catalyst is suitable for synthesis gas CO+H 2 Direct conversion to low carbon olefins - the preparation process of ethylene, propylene and butene. Background technique [0002] At present, the fuel consumed in the world and the raw materials required for chemical production mainly depend on petroleum. In recent years, due to the shrinking of oil reserves and the continuous rise of oil prices, it is unavoidable to search for alternative energy sources of oil. The development of a process route for preparing chemical raw materials from non-petroleum resources has attracted the attention of countries all over the world, especially developed countries. Low-carbon olefins represented by ethylene and propylene are the most basic raw materials in the chemical industry and play a pivotal role in the modern petroleum and chemical industries. Syngas is a mixed ga...

AI Technical Summary

Problems solved by technology

However, the iron salt and manganese salt of the auxiliary agent used in the preparation of the catalyst are more expensive and insoluble iron oxalate and manganese acetate, and ethanol is used as the solvent at the same time, which will inevitably increase the cost of raw materials and operating cost

Moreover, during the reshaping process necessary for the catalyst to be used in industrial production, the performance of the catalyst, such as activity and selectivity, will inevitably decrease, increasing the cost and burden of production.