Coal is milled and dried in preparation for gasification . The SERVOTOUGH Oxy 1900 1 and SERVOTOUGH SpectraExact 2500 2 provide percentage safety measurements for oxygen ( O 2 ) and carbon monoxide ( CO ) to prevent combustion .

The milled coal is then gasified with steam ( H 2O ) to produce hydrogen ( H 2 ), CO , carbon dioxide ( CO 2 ) and methane ( CH 4 ).

KEY APPLICATION TYPES :

The clean coal gas produced in the gasifying process is monitored for O 2 by the Oxy 1900 3 , CO , CO 2 and CH 4 by the SpectraExact 2500 4 and H 2 by the SERVOPRO MonoExact TCD 5 .

The CO is then converted into H 2 + CO 2 to raise the H 2 content , with the SpectraExact 2500 6 closely monitoring the CO level to optimize the process .

Methanol washing removes most of the CO 2 and sulfur , with the SpectraExact 2500 7 measuring CO and CO 2 , and the MonoExact TCD 8 measuring H 2 to ensure gas components are present at the correct proportions .

Finally , the H 2 and CO are reacted to synthesize methanol , with the SpectraExact 2500 9 measuring the CH 4 to monitor the recycle gas .

SERVOTOUGH SpectraExact 2500 CO

CO WASTE

SERVOTOUGH SpectraExact 2500 CH 4

RAW METHANOL

PURIFY

METHANOL PRODUCT

P12