Oil refinery

The oil refinery is a processing building that converts crude oil and other raw materials into petroleum products. It must be configured with a processing recipe before it can begin operation. Depending on researched technologies, the refinery has three or four available recipes that change its inputs and outputs; one recipe must be selected for the refinery to work.

The available refinery recipes are:

• Basic oil processing — inputs: Crude oil; outputs: Petroleum gas; required technology: Oil processing.
• Advanced oil processing — inputs: Crude oil and Water; outputs: Heavy oil, Light oil, and Petroleum gas; required technology: Advanced oil processing.
• Coal liquefaction — inputs: Coal, Heavy oil, and Steam; outputs: Heavy oil, Light oil, and Petroleum gas; required technology: Coal liquefaction.
• Simple coal liquefaction — inputs: Coal, Calcite, and Sulfuric acid; outputs: Heavy oil; required technology: Calcite processing.

When the refinery is operating, a flame appears from its chimney as a visual indicator of activity. The refinery will stop processing if any of the selected recipe’s product outputs are not being removed; an example of this is that having 100.0 units of Heavy oil sitting at an output will prevent production of the other two fluids for recipes that produce multiple products.

Practical notes:

• Ensure you set the refinery’s recipe before expecting any processing to occur.
• Provide proper fluid handling (pipes, storage tanks, or connections to other machines) so that all products are continuously drained; blocked outputs halt production.
• Be aware that recipes that produce multiple fluids require handling for each product; a full output line for any one product can halt all production from that recipe.
• Researching the appropriate processing technologies unlocks additional recipes and changes the refinery’s input requirements.