Use method of reduced catalyst

Abstract

The present invention provides a method for using regenerated catalyst whose performance can not meet the requirements for original reaction, and is characterized by that small quantity of similar fresh catalyst can be mixed into regenerated catalyst, then its activity is evaluated, and according to its performance condition is can be respectively used, it can be used in original reaction process or degraded for use. Said invention utilizes mutual matching use of fresh catalyst and regenerated catalyst to attain the goal of fully-utilizing catalyst, reducing energy consumption, broadening application range of regenerated catalyst and raising efficiency.

Description

1. Technical field [0001] The invention relates to a method for using a regenerated catalyst, in particular to a method for using a regenerated catalyst whose reaction performance cannot meet the original reaction process. 2. Background technology [0002] Catalytic methods, such as hydrocracking and hydrofinishing, are often used in oil refining and chemical processes to economically treat raw materials and convert them into various useful end products. The catalysts used in these processes will gradually lose their activity during long-term operation, which is largely due to the deposition of carbon deposits on the catalyst surface. For many catalysts, the activity can be partially or completely restored by burning off carbon deposits for regeneration, and can still be used in industrial production. Some catalysts can be regenerated many times to achieve the purpose of saving energy and increasing efficiency. At the same time, waste of resources can also be reduced. [...

AI Technical Summary

Problems solved by technology

The patent USP4,888,316 suggests that the waste hydrorefining catalyst should be processed by grinding, adding alumina, molding and charcoal to prepare a reusable catalyst, but this method has the problems of difficulty in implementation and insufficient activity