Title: Sealpot and method for controlling a solids flow rate therethrough

Abstract

A sealpot for a combustion power plant includes a downcomer standpipe which receives solids of the combustion power plant, a bed including a first end and a second opposite end, the first end connected to the downcomer standpipe, a discharge standpipe disposed at the second opposite end of the bed, and an orifice plate disposed between the bed and the discharge standpipe separating the discharge standpipe from the bed. The orifice plate includes apertures disposed at a height above the bed which allow transport of fluidized solids and gas through the orifice plate.

Inventors:

Chiu, John H.; Teigen, Bard C.

Issue Date:

2015-10-20

Research Org.:

ALSTOM Technology Ltd, Baden, CH (Switzerland)

Sponsoring Org.:

USDOE

OSTI Identifier:

1223698

Patent Number(s):

9163830

Application Number:

12/749,284

Assignee:

ALSTOM Technology Ltd (Baden, CH)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

F - MECHANICAL ENGINEERING F22 - STEAM GENERATION F22B - METHODS OF STEAM GENERATION

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J2208/00752 - Feeding
B01J2208/00769 - Details of feeding or discharging
B01J8/0025 - {by an ascending fluid}

F - MECHANICAL ENGINEERING F22 - STEAM GENERATION F22B - METHODS OF STEAM GENERATION

F22B31/0084 - {with recirculation of separated solids or with cooling of the bed particles outside the combustion bed}

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  {A CARRIER GAS OR} AIR 

F23C10/02 - with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
F23C10/08 - characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
F23C10/10 - the separation apparatus being located outside the combustion chamber
F23C10/32 - by controlling the rate of recirculation of particles separated from the flue gases

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DOE Contract Number:  

FC26-03NT41866

Resource Type:

Patent

Resource Relation:

Patent File Date: 2010 Mar 29

Country of Publication:

United States

Language:

English

Subject:

20 FOSSIL-FUELED POWER PLANTS