Experimental Setup

To precede application test with actual CO removal equipment for verifying practical performance, the present experiment was undertaken using the equipment shown in Fig. 1 to determine (1) the methanation rate for obtaining basic data on catalysts, and (2) catalyst performance using reformate gas under conditions close to practical application.

(1) Methanation rate

Catalysts tested :

Three Ni-Al203 base methanation catalysts obtained obtained from market Catalyst A (20 to 24% Ni) Catalyst B (14 to 17% Ni) Catalyst C (20% Ni, 4 to 6% CaO)

Reaction temperature :

Varied in three steps 200, 225 and 250°C

Reaction pressure :

Varied in three steps 2, 3 and 5 kgf/cm2 abs.

Subject gases tested:

99% H2 - 1% CO mixture 99% H2 - 1% CO2 mixture 99% H2 - 1% CO + steam mixture 99% H2 - 1% CO2 + steam mixture

Quantity of catalyst applied : 1 ml

(2) Methanation performance of catalyst

Catalyst tested: Catalyst C (3/16" spherules containing 20% Ni, 4 to 6% CaO) Quantity of catalyst applied : 530 ml Reaction temperatures: 200, 225 and 250°C Reaction pressure : 2 kgf/cm2 abs. SV : 300, 500 and 1,000 h"l

Subject gas tested :

Reformate gas (generated at 250°C from methanol/water mixture at S/C = 1.55 and 1.7)

0 0

Post a comment