isothermal operation across all reactors. • Utilising Avantium Microfluidics technology, coupled with a pump featuring Coriolis flow meter feedback, liquid MCH can be distributed evenly across all reactors with exceptional precision and accuracy. This guarantees that the system delivers the highest quality data for comparative testing of dehydrogenation catalysts. • Furthermore, Avantium’s patented parallel pressure regulator, integrated with reactor pressure control and Microfluidics technology, enables
N
MFC
TinyPressure (Diluent)
He
MFC
N
MFC
Glass Chip (Mixed gas feed)
H
MFC
Other gas
MFC
Glass Chip (Liquid)
Low P N
Liquid
Reactors (I = 561mm, 6mm OD, 2–5mm)
Heated blocks of 4 reactors (100–800 ˚C)
MCH
GC2
GC1
N
PIC
Parallel Pressure Block (Active Control 5 – 100 barg)
Vent (bleed)
GC4
GC3
200˚C
Vent
E uent stove (max 200˚C)
Figure 2 Schematic representation of a Flowrence XR. The gas and liquid supply system and unit specifications can be tailored to specific application
a single design to function with high
• All process variables – temperature, pressure, flow, and valve positions – are managed through the Flowrence control software, which provides real-time monitoring, data logging, and automated safety interlocks. • The unit contains 16 parallel fixed-bed reactors within four heating blocks, each heated independently. The design minimises axial and radial temperature gradients, allowing for
accuracy across the entire pressure range. The reactor pressure control ensures uniform inlet pressure for all 16 reactors, even if pressure drop variations occur due to catalyst coking, for example. Additionally, the reactor pressure drop can be continuously monitored throughout the experiment, providing valuable supplementary process information. • Reproducibility: The system is designed to deliver <2% standard deviation in conversion and selectivity across all reactors. • Effluent handling: Another key advantage of the Flowrence for this application is the design of the effluent section. After exiting the reactor,
Run-01
Run-02
Catalyst
0.5%Pt/ 0.5%Pt/ alumina, sphere alumina, sphere
Total liquid feed, gram/h Total gas feed, mL/min N 2 (carrier) He (internal standard)
6.7
6.7
82.0
82.0
4.0
4.0
H 2
/
0 or 10
Temperature, °C Pressure, barg
300-400
400
0 6
0 or 15
WHSV, h -1
6
1 2 3 4 5 6 7 8 9 101112 13141516
Time on stream, h
50
50
Figure 3 Reactor loading scheme for Run-01
Table 2 Testing conditions
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