I had a need to build a Coal Liquefaction module in my base, and couldn't find blueprints for this. So here is my design for consideration.
In 0.17, the ratios are awful I couldn't get the production/consumption levels to align and after much tweaking in Excel I came up with this baby. It takes almost exactly one pump of water, and 1.4K Coal per minute as inputs, and outputs a steady 8K Petroleum Gas a minute.
The tank and pump are there to keep a minimum of 200 units of Heavy Oil in the system, as the two cracking banks consume slightly more than the preceding supplier can produce, which means the system does not back up (unless the demand for the final product slackens off.