Selection of reduction pressure for bifunctional alcohol catalysts
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Selection of reduction pressure for the ligand alcohol catalyst: 1. There are generally two methods for reducing the ligand alcohol catalyst: high-hydrogen reduction and low-hydrogen reduction. 2. The advantage of high-hydrogen reduction is the use of syngas produced by the device itself, with a hydrogen content of around 70%, and a high reduction pressure. The downside is that it tends to overheat easily. 3. The advantage of low-hydrogen reduction is a stable reduction process with little risk of temperature spikes. The reduction pressure is low, and the reduction is smooth.
This post was last edited by shanhaiguan on 2025-3-4 08:26. Low-hydrogen reduction usually involves the use of low pressure, with a pressure range of 0.6–1.0 MPa. After the nitrogen is heated to the specified temperature, hydrogen is gradually added to initiate reduction. If conditions permit, the reduction pressure can also be increased to 1.0–3.0 MPa; a higher space-time velocity for reduction leads to better effluent quality.
The reciprocating machine is used as the circulator in the reduction of bifunctional alcohol catalysts, and it can operate normally even when the pressure in the reduction circuit is high under nitrogen conditions. If it is a centrifuge, it can only operate at a pressure of 0.6–1.0 MPa.
During the reduction process of the diol catalyst, a reciprocating machine can operate at higher pressures, whereas a centrifuge can only operate within a lower pressure range (0.6–1.0 MPa). This indicates that when selecting the reduction pressure, appropriate adjustments need to be made based on the type and performance of the circulation machine. .
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