Iron catalyst for slurry reactor hydrogenation, preparation, design method, and applications thereof

Abstract

The invention discloses an iron catalyst for slurry reactor hydrogenation, preparation, a design method, and applications thereof. The iron catalyst comprises the following components: iron main catalyst (FeOOH), an active auxiliary agent (ammonium molybdate), and a carrier (dry coal powder or active carbon powder); wherein the mass ratio of metal center (Mo) to Fe is 1:350 to 1:175, and the mass ratio of metal center (Fe) to carrier is 1:30 to 1:3. The preparation method comprises the following steps: dissolving FeOOH into distilled water, evenly stirring to obtain FeOOH slurry; adding an ammonium molybdate water solution into the FeOOH slurry, evenly stirring to obtain FeOOH slurry with dispersed molybdenum; adding a carrier into the FeOOH slurry with dispersed molybdenum, evenly stirring, filtering to obtain filter cakes; drying the filter cakes in the atmosphere of N2, and grinding the filter cakes to a size of 10-200 [mu]m to obtain the iron catalyst for slurry reactor hydrogenation. The provided iron catalyst can be applied to residual oil hydrogenation, direct coal liquefaction, and oil-coal blending, the conversion rate and liquid yield are both very high, and the economic benefits are prominently improved.

Description

technical field [0001] The invention relates to a catalyst for slurry bed hydrogenation, in particular to an iron-based catalyst and its preparation, design method and application, and belongs to the fields of petrochemical and coal chemical industries. Background technique [0002] In recent years, the world's oil resources have become increasingly scarce, and the problem of heavy and inferior oil resources has become more and more obvious. At the same time, the market's demand for light oil has continued to increase and people's awareness of environmental protection has continued to increase. Engine exhaust emission requirements are more stringent, and various fuel standards require more stringent S and N content. How to process the middle distillate with high impurity content such as sulfur and nitrogen into products that meet the requirements of environmental protection is an important problem faced by every refinery. In this realistic environment, heavy oil hydrogenati...

AI Technical Summary

Problems solved by technology

In addition, for heavy crude oil, low-quality heavy oil hydrogenation process, oil-coal mixing process and direct coal liquefaction process, due to the limitation of process and raw materials, there are many solid products, and the catalyst is difficult to recycle. At present, most of them are waste after reaction. directly discarded together, and the existing catalyst precious metal content is high, so the production cost is very high

The unsatisfactory comprehensive performance of the current catalysts limits its application in the above fields