Method and apparatus for the utilization of waste heat from gaseous heat sources carrying substantial quantities of dust
An apparatus, system and method for transferring heat from a hot flue gas stream from a cement plant including large particles and dust to a working fluid of a power plant via a high temperature heat transfer fluid without exposing all or most of the equipment to the erosive force of the particles and dust is disclosed where the apparatus includes a cement plant, a particle separation and heat transfer system and a power plant.
1. An apparatus comprising:
a cement plant CP,
a particulate separation and heat transfer system PSHTS comprising:
a separator C adapted to remove substantially all large particles from the hot gas stream from the cement plant CP,
a scrubber S adapted to bring the substantially large particle-free hot gas stream into heat exchange with a cooled high temperature heat transfer fluid stream to from a cooled gas stream and a heated high temperature heat transfer fluid stream including a portion of the dust from the gas stream, a pump P adapted to raise a pressure of the heated high temperature heat transfer fluid stream to a desired high pressure,
a fan F adapted to remove substantially all of the dust from the pressurized heated high temperature heat transfer fluid stream, and
a heat exchanger HE transferring heat from the substantially dust-free high temperature heat transfer fluid stream to the working fluid stream of the power plant PP to form the vaporized working fluid stream, and a power plant PP,
where the cement plant CP producing a hot gas stream including large particles and dust, the PSHTS removes the large particles and the dust to produce a heated high temperature transfer fluid stream and transfer its heat to a working fluid stream of the power plant PP where a portion of its heat is converted to a usable form of energy.
2. The apparatus of claim 1 , wherein the scrubber S includes a packing structure.
3. The apparatus of claim 2 , wherein the packing structure comprises a corrugated material and a non-corrugated material formed into a roll.
4. An apparatus comprising:
a cement plant CP,
a particulate separation and heat transfer system PSHTS comprising:
a separator C adapted to remove substantially all large particles from the hot gas stream from the cement plant CP,
a pump P adapted to raise a pressure of the substantially large particle-free hot gas stream to a desired high pressure,
a fan F adapted to remove substantially all of the dust from the pressurized substantially large particle-free hot gas stream to a desired high pressure to form a substantially large particle and dust free hot gas stream,
a scrubber S adapted to bring the substantially large particle and dust free hot gas stream into heat exchange with a cooled high temperature heat transfer fluid stream to from a cooled substantially large particle and dust free gas stream and a heated high temperature heat transfer fluid stream including a portion of the dust from the gas stream, and
a heat exchanger HE transferring heat from the substantially dust-free high temperature heat transfer fluid to the working fluid stream of the power plant PP to form the vaporized working fluid stream, and
a power plant PP,
where the cement plant CP producing a hot gas stream including large particles and dust, the PSHTS removes the large particles and the dust to produce a heated high temperature transfer fluid stream and transfer its heat to a working fluid stream of the power plant PP where a portion of its heat is converted to a usable form of energy.
5. The apparatus of claim 4 , wherein the scrubber S includes a packing structure.
6. The apparatus of claim 5 , wherein the packing structure comprises a corrugated material and a non-corrugated material formed into a roll.
7. A method comprising:
forwarding a hot gas stream including large particles and dust from a cement plant CP to a large particle separator C to from a substantially large particle free hot gas stream,
simultaneously forwarding the substantially large particle free hot gas stream via a bottom port into a scrubber S, and a cooled high temperature heat transfer fluid stream via an upper side port into the scrubber S to form a cooled substantially dust free gas stream exiting the scrubber S via a top port and a heated high temperature heat transfer fluid stream including substantially all of the dust from the of the substantially large particle free hot gas stream exiting the scrubber S via a lower side port,
pressurizing the dust containing, heated high temperature heat transfer fluid stream in a pump P to a desired higher pressure to form a pressurized dust containing, heated high temperature heat transfer fluid stream,
filtering the pressurized dust containing, heated high temperature heat transfer fluid stream in a filter or a plurality of filters to form a substantially dust free heated high temperature heat transfer fluid stream, and
heating a working fluid stream from a power plant PP in a heat exchanger HE to form a heated working fluid stream and the cooled high temperature heat transfer fluid stream.
8. The method of claim 7 , further comprising:
converting a portion of the heated working fluid stream in the power plant PP to a usable form of energy.
9. The method of claim 7 , wherein the scrubber S includes a packing structure.
10. The method of claim 9 , wherein the packing structure comprises a corrugated material and a non-corrugated material formed into a roll.
11. A method comprising:
forwarding a hot gas stream including large particles and dust from a cement plant CP to a large particle separator C to from a substantially large particle free hot gas stream,
pressurizing the substantially large particle free, hot gas stream in a pump P to a desired higher pressure to form a pressurized substantially large particle free, hot gas stream,
filtering the pressurized substantially large particle free, hot gas stream in a filter or a plurality of filters to form a substantially large particle and dust free, hot gas stream,
simultaneously forwarding the substantially large particle and dust free hot gas stream via a bottom port into a scrubber S, and a cooled high temperature heat transfer fluid stream via an upper side port into the scrubber S to form a cooled substantially dust free gas stream exiting the scrubber S via a top port and a heated high temperature heat transfer fluid stream including substantially all of the dust from the of the substantially large particle free hot gas stream exiting the scrubber S via a lower side port, and
heating a working fluid stream from a power plant PP in a heat exchanger HE to form a heated working fluid stream and the cooled high temperature heat transfer fluid stream.
12. The method of claim 11 , further comprising:
converting a portion of the heated working fluid stream in the power plant PP to a usable form of energy.
13. The apparatus of claim 11 , wherein the scrubber S includes a packing structure.
14. The apparatus of claim 13 , wherein the packing structure comprises a corrugated material and a non-corrugated material formed into a roll.