Turbine outlet frozen gas capture apparatus and method

A turbine outlet frozen gas capture apparatus, comprising:

• an enclosure;
• a divider disposed to define in the enclosure first and second chambers, the first chamber being receptive of turbine outlet exhaust including frozen gas;
• a wheel disposed to straddle the divider and configured to be rotatable such that each circumferential portion of the wheel sequentially moves into the first chamber and out of the second chamber and out of the first chamber and into the second chamber such that frozen gas received in the first chamber is captured by the by the circumferential portions of the wheel in the first chamber and transported by wheel rotation by the circumferential portions of the wheel into the second chamber;
• a heater disposed within the second chamber and configured to vaporize the frozen gas transported therein by the circumferential portions of the wheel to thereby produce vaporized gas;
• and
• a system configured to draw the vaporized gas from the second chamber and to maintain a pressure differential between the first and second chambers sufficient to prevent flow of the turbine outlet exhaust across the divider, the system comprising:
• a compressor fluidly interposed between the second chamber and a vaporized gas outlet, the compressor being configured to draw the vaporized gas from the second chamber toward the vaporized gas outlet;
• and
• a controller configured to measure a differential pressure between the first and second chambers the controller being coupled to the compressor and configured to control an operation of the compressor in accordance with the differential pressure.

A turbine outlet frozen gas capture method, comprising:

• receiving turbine outlet exhaust including frozen gas within a first chamber of an enclosure divided by a divider into the first chamber and a second chamber;
• rotating a wheel disposed to straddle the divider such that each circumferential portion of the wheel sequentially moves into the first chamber and out of the second chamber and out of the first chamber and into the second chamber;
• capturing the frozen gas by the circumferential portions of the wheel in the first chamber and transporting the captured frozen gas into the second chamber by the circumferential portions of the wheel;
• heating the frozen gas transported into the second chamber by the circumferential portions of the wheel to produce vaporized gas;
• and
• drawing the vaporized gas from the second chamber and maintaining a pressure differential between the first and second chambers sufficient to prevent flow of the turbine outlet exhaust from the first chamber to the second chamber, the drawing of the vaporized gas from the second chamber comprising:
• operating a compressor fluidly interposed between the second chamber and a vaporized gas outlet;
• measuring a differential pressure between the first and second chambers;
• and
• controlling the operating of the compressor in accordance with a result of the measuring.