What is the catalyst recovery and regeneration technology?

What is the catalyst recovery and regeneration technology?

A chemical agent is a chemical substance that can change the chemical reaction rate, but does not change the thermodynamic equilibrium position of the chemical reaction, and is not obviously consumed in the chemical reaction. It is the core of the catalytic technology. According to statistics, 90% of the chemical industry today contains a catalytic process; by mass, the annual consumption of industrial catalysts around the world is about 8 × 105t (excluding sulfuric acid and hydrofluoric acid catalysts for alkylation), among which refining Catalysts account for about 52%, chemical catalysts account for about 42%, and environmentally friendly catalysts account for about 6%.

In petrochemical and chemical production, catalysts are widely used. After the reaction, it is generally necessary to separate the product and the catalyst and recover the catalyst. How to separate and recycle the catalyst?

First, the traditional catalyst separation process and existing problems

Conventional methods mostly use sedimentation, plate and frame filtration, and centrifugal separation, but the catalyst loss is large and the utilization rate is low. The catalyst content in the product is easy to exceed the standard, which affects the quality. At the same time, the catalyst regeneration is not easy to completely and shorten the service life. In addition, most of the traditional separation methods have problems such as low automation and labor intensity.

Second, the new process of catalyst separation and reuse

The ceramic membrane separation technology is used for the recovery and regeneration of catalysts, and replaces the separation techniques such as traditional centrifugation and plate and frame filtration, and has the following advantages:

Separable recovery of ultrafine powder, nanocatalyst;

The ceramic membrane is resistant to high temperature, high pressure, organic solvent, strong acid and alkali;

The ceramic membrane is coupled with the reactor to fully increase the efficiency of the reactor;

The catalyst content in the product is extremely small, improving product quality;

Low catalyst loss rate and reduced production cost;

The catalyst regeneration effect is good, the number of repeated uses is increased, and the life of the catalyst is prolonged;

Fully enclosed automatic continuous production is possible.