Slurry monitoring system
AssigneePinnacle West Capital Corporation
InventorLyle L. Hersh
Life of this patent
Estimating the term…
Abstract
A slurry monitoring system is provided. A filter encompasses a filter chamber containing a purge piston. During a monitor operation, the purge piston is retracted, and slurry enters the filter chamber through the filter, then passes into an outlet pipe, where a characteristic of the slurry is monitored by a monitoring device. During a purge operation, a flush valve is opened to allow water to pass into the filter chamber through an inlet pipe. The purge piston is extended to force filtered slurry from the filter chamber. The water dilutes filtered slurry remaining in the filter chamber. The flush valve is then closed and the purge piston retracted. This forces diluted slurry to pass out of the filter. This purges the filter. Diluted slurry also passes into the outlet pipe, which purges the outlet pipe and monitoring device.
Claims31
A slurry monitoring system configured to monitor a characteristic of a slurry flowing through a slurry flow chamber, said system comprising:
- a base plate coupled to a wall of said slurry flow chamber;
- a filter having pores of a predetermined diameter coupled to said base plate, configured to extract a portion of said slurry flowing through said slurry flow chamber, configured to filter said portion of said slurry to produce a filtered slurry with debris having a diameter less than or equal to said predetermined diameter, and configured to pass a first portion of said filtered slurry back to said slurry flow chamber;
- a filter chamber encompassed by said filter and configured to contain said filtered slurry;
- an outlet pipe having an inner diameter substantially twice said predetermined diameter, coupled to said filter chamber, and configured to pass a second portion of said filtered slurry;
- and
- a monitoring device coupled into said outlet pipe and configured to monitor said characteristic of said second portion of said filtered slurry.
A slurry monitoring system configured to monitor a characteristic of a slurry, wherein said slurry is configured to scrub an exhaust of a coal-fired facility, wherein said slurry contains debris in the form of large and small ash particles, abraded cladding, and other materials, and wherein said system comprises:
- a base plate;
- a filter coupled to said base plate;
- a debris shield configured to protect said filter from said debris;
- a filter chamber encompassed by said filter and configured to contain a filtered slurry;
- a purge piston contained within said filter chamber;
- an outlet pipe coupled to said filter chamber and configured to pass said filtered slurry;
- and
- a monitoring device coupled into said outlet pipe and configured to monitor said characteristic of said filtered slurry.
A slurry monitoring system configured to monitor a characteristic of a slurry, said system comprising:
- a base plate;
- a filter coupled to said base plate wherein said filter comprises:
- a screen encompassing said filter chamber and coupled to said base plate at a first end of said filter chamber;
- and
- an end plate coupled to said screen at a second end of said filter chamber and comprising a plurality of holes;
- a filter chamber encompassed by said filter and configured to contain a filtered slurry;
- a purge piston contained within said filter chamber;
- an outlet pipe coupled to said filter chamber and configured to pass said filtered slurry;
- and
- a monitoring device coupled into said outlet pipe and configured to monitor said characteristic of said filtered slurry.
A slurry monitoring system configured to monitor a characteristic of a slurry, said system comprising:
- a base plate;
- a filter having pores of a predetermined diameter coupled to said base plate and configured to filter a portion of said slurry to produce a filtered slurry with debris having a diameter less than or equal to said predetermined diameter;
- a filter chamber encompassed by said filter and configured to contain said filtered slurry;
- a purge piston contained within said filter chamber and comprises:
- a first face;
- a second face opposing said first face;
- and
- an edge surface between said first and second faces,
- wherein each of said first and second faces tapers towards said edge surface;
- an outlet pipe having an inner diameter substantially twice said predetermined diameter, coupled to said filter chamber, and configured to pass said filtered slurry;
- and
- a monitoring device coupled into said outlet pipe and configured to monitor said characteristic of said filtered slurry.
A slurry monitoring system configured to monitor a characteristic of a slurry, said system comprising:
- a base plate;
- a filter having pores of a predetermined diameter coupled to said base plate and configured to filter a portion of said slurry to produce a filtered slurry with debris having a diameter less than or equal to said predetermined diameter;
- a filter chamber encompassed by said filter and configured to contain said filtered slurry;
- a purge piston is contained within said filter chamber and comprises:
- a first face;
- a second face opposing said first face;
- and
- an edge surface between said first and second faces, wherein said first face, said second face, and said edge surface together comprise an outer surface formed of a nonmetallic material;
- an outlet pipe having an inner diameter substantially twice said predetermined diameter, coupled to said filter chamber, and configured to pass said filtered slurry;
- and
- a monitoring device coupled into said outlet pipe and configured to monitor said characteristic of said filtered slurry.
A slurry-density monitoring system configured to monitor a density of a slurry flowing through a slurry flow chamber during a monitor operation, and configured to self purge during a purge operation, said system comprising:
- a base plate coupled to a wall of said slurry flow chamber and having a first side and a second side;
- a filter having pores of a predetermined diameter configured to extract a portion of said slurry flowing through said slurry flow chamber, configured to filter said portion of said slurry to produce a filtered slurry, and configured to pass a first portion of said filtered slurry back to said slurry flow chamber, and having a first end and a second end, wherein said first end is coupled to said base plate upon said first side;
- an end plate coupled to said second end;
- a filter chamber encompassed by said filter and configured to contain said filtered slurry;
- a purge piston configured to reside within said filter chamber in one of a first position proximate said first end and a second position proximate said second end;
- a shaft coupled to said purge piston proximate said first side;
- a bidirectional ram coupled to said shaft proximate said second side;
- an inlet pipe coupled to said filter chamber;
- a flush valve coupled into said inlet pipe;
- a controller electrically coupled to said bidirectional ram and said flush valve;
- an outlet pipe coupled to said filter chamber and configured to pass a second portion of said filtered slurry, the inner diameter of said outlet pipe being substantially twice said predetermined diameter;
- and
- a monitoring device coupled into said outlet pipe and configured to monitor said density of said second portion of said filtered slurry.
Dependencies are inferred from the claim text.