Continuous filtration with backflush clearance of alternate filters
AssigneeBoyle Energy Services & Technology, Inc.
InventorJudah Hiat
Life of this patent
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Abstract
Improved steamblow commissioning of a steam plant with continuous filtration of particle laden condensate through dual strainer filters with backflush means operatable in parallel to enable isolation of one and backflushing while the other is backflushed and venting backflushed particles to waste to enable an uninterrupted commissioning process recycling steam with significant particulate burden relived by continuous cycling in alteration through the dual filers and removal of particles to waste with backflush.
Claims5
In a steamblow commissioning system for steam cycle power plants with boiler, turbine, condenser with interconnection piping means in a closed cycle with high pressure steam routed to the condenser via permanent piping wherein the commissioning includes use of steam blow means to capture particles and routing the steam to the condenser and recycling condensate from the condenser to the boiler,
- the improvement comprising means for continuous Hushing and removal to waste of particle laden condensate from the condenser and with dual filters operating in alternation with a first filter operating until a selected level of particulate burden is reached, then going out of line while the second filter is engaged in filtering particle laden condensate while the first one is backflushed by an air blast of accumulated air and reversing the roles of the filters repeatedly and without interrupting condenser outflow and transit to the boiler until the commissioning goal of filtration is achieved.
Implementing apparatus for the system improvement for steam blow commissioning as set forth in claim I comprising means constructed and arranged for continuous Hushing of particle laden condensate from the condenser and (a) with dual filters of truncated conical basket form pointing upstream in respective housings operating in alternation with a first filter operating until a selected level of particulate burden is reached, (b) then going off line while the second filter is engaged for filtering particle laden condensate while the first one is backflushed by an air blast of accumulated air the reversing the roles of the filters, (c) means for measuring pressure drops between inlet and exit sides of each filter housing to establish a trigger point for backflushing (d) doing such alternating backflush repeatedly and without interrupting Mow of particle laden condensate from the condenser to the multi-filter means or from said filter means to the boiler, the dual filters operating in alternation until the commissioning goal of filtration is achieved.
Dependencies are inferred from the claim text.