Boiler with integrated air compressor

An integrated power generation system comprising:

• a heat source producing a first gas flow;
• an expander in flow communication with the first gas flow from the heat source;
• a boiler in flow communication with the first gas flow from the expander;
• a first control valve of a plurality of control valves positioned in the first gas flow between the heat source and the expander;
• a bypass line in flow communication with the first control valve such that when the first control valve is in a first orientation the totality of the first gas flow bypasses the expander and is directed to the boiler;
• a feedwater flow in flow communication with the boiler;
• a compressor operatively coupled to the expander, the compressor producing a second gas flow divisible into a first portion and a second portion, the first portion flowing to the heat source and the second portion flowing to a point of use;
• a first heat exchanger arranged upstream of the boiler in the feedwater flow and downstream of the compressor in the second portion of the second gas flow, the heat exchanger exchanging heat between the second portion of the second gas flow and the feedwater flow to preheat the feedwater flow prior to entering the boiler;
• and
• a second heat exchanger arranged downstream of the boiler in the first gas flow and downstream of the compressor in the first portion of the second gas flow, the second heat exchanger exchanging heat between the first gas flow and the first portion of the second gas flow to preheat the first portion of the second gas flow prior to entering the heat source;
• wherein the plurality of control valves transition the system between one of a first operation state, a second operation state, and a joint operation state wherein the first and second operation states operate concurrently,
• wherein in the first operation state the plurality of control valves direct the second portion of the second gas flow to the point of use without the feedwater flow through the boiler and without the first gas flow flowing to the boiler.

An integrated power generation system comprising:

• a heat source producing a first gas flow;
• an expander in flow communication with the first gas flow from the heat source;
• a boiler in flow communication with the first gas flow from the expander;
• a first control valve positioned in the first gas flow between the heat source and the expander;
• a bypass line in flow communication with the first control valve such that when the first control valve is in a first orientation the totality of the first gas flow bypasses the expander and is directed to the boiler;
• a single feedwater flow in flow communication with the boiler;
• a first compressed gas flow in heat exchange communication with the entire feedwater flow prior to at least a portion of the feedwater flow entering the boiler;
• and
• a second compressed gas flow in flow communication with the heat source;
• wherein the second compressed gas flow is in heat exchange communication with the single feedwater flow at a location of the feedwater flow upstream of the boiler;
• and
• wherein the second compressed gas flow is in heat exchange communication with the first gas flow at a location of the second compressed gas flow prior to the second compressed gas flow entering the heat source and at a location of the first gas flow downstream of the boiler.