Continuous Reforming Catalyst with Large Pore and High Bulk Density and Its Preparation and Application

Abstract

The invention relates to a continuous reforming catalyst with large pore diameter and high bulk density and its preparation and application. In terms of elements, the catalyst includes the following components in mass percentages: 0.01-1.0 mass % of Group VIII metals and 0.01-1.0 mass % of Group IVA metals mass %, halogen 0.2-3.0 mass %; VIII group metal is platinum, IVA group metal is germanium or tin; the bulk density of the catalyst is 0.58-0.90 g / ml, the most probable pore diameter is 8-20 nanometers, and the specific surface area is 170-210 meters 2 / g; the catalyst is applied in the continuous reforming process and has high activity, high xylene yield and low coke yield.

Description

technical field [0001] The invention relates to a continuous reforming catalyst with large aperture and high bulk density and its preparation and application. Background technique [0002] Catalytic reforming is one of the important production processes in petroleum processing, and its main purpose is to produce high-octane gasoline, BTX aromatics and cheap hydrogen. With the upgrading of gasoline and diesel quality and the rapid development of hydrogenation technology, catalytic reforming plays an increasingly important role in the refining and chemical industry. [0003] For refinery continuous reforming unit capacity expansion, the furnace load is usually increased, but the reactor is less modified. At present, radial reactors are generally used in continuous reforming units. After the capacity of the unit is expanded, the oil and gas processing capacity will increase. For reforming catalysts with low bulk density, under the pressure of oil and gas, part of the catalyst ...

AI Technical Summary

Problems solved by technology

At present, radial reactors are generally used in continuous reforming units. After the capacity of the unit is expanded, the oil and gas processing capacity will increase. For reforming catalysts with low bulk density, under the pressure of oil and gas, part of the catalyst will be pressed against the central tube wall and cannot be transferred to the central tube wall. Moving down, causing the catalyst to stick to the wall

Adhesion of the catalyst to the wall will cause uneven flow of the catalyst, uneven distribution of reaction products, and excessive carbon deposition on the catalyst attached to the wall, which will cause trouble for subsequent catalyst regeneration

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