Method and apparatus for sequestering carbon dioxide from a spent gas

An apparatus for sequestering carbon dioxide from a top gas fuel, comprising:

• one or more conduits for dividing a top gas into a process gas and a top gas fuel;
• one or more conduits for mixing the process gas with a hydrocarbon and feeding a resulting reformer feed gas into a reformer for reforming the reformer feed gas and forming a reducing gas;
• and
• one or more conduits for feeding at least a portion of the top gas fuel into a carbon dioxide scrubber for removing at least some carbon dioxide from the top gas fuel and forming a carbon dioxide lean gas that is mixed with the reducing gas;
• wherein a ratio of the process gas to the top gas fuel is responsive to available heat in the reformer to which the reformer feed gas is fed;
• and
• wherein the ratio of the process gas to the top gas fuel is a first relatively lower ratio when the carbon dioxide lean gas is fully utilized for mixing with the reducing gas and is a second relatively higher ratio when the carbon dioxide lean gas is not utilized for mixing with the reducing gas.

A method for sequestering carbon dioxide from a waste gas and reusing it as a recycled gas without emissions concerns, comprising:

• given a gas source divided into a process gas and a waste gas:
• mixing the process gas with a hydrocarbon and feeding a resulting feed gas into a reformer for reforming the feed gas and forming a reducing gas;
• and
• feeding at least a portion of the waste gas into a carbon dioxide scrubber for removing at least some carbon dioxide from the waste gas and forming a carbon dioxide lean gas that is selectively mixed with the reducing gas;
• wherein a ratio of the process gas to the waste gas is responsive to available heat in the reformer to which the feed gas is fed;
• and
• wherein the ratio of the process gas to the waste gas is a first relatively lower ratio when the carbon dioxide lean gas is fully utilized for mixing with the reducing gas and is a second relatively higher ratio when the carbon dioxide lean gas is not utilized for mixing with the reducing gas.