Open AccessPROOF OF PRINCIPAL TEST TO FEED AND METER GRANULAR COAL INTO 450 PSIG GAS PRESSURE
Author(s) -
Derek L Aldred
Publication year - 1999
Language(s) - English
Resource type - Reports
DOI - 10.2172/778915
Subject(s) - leakage (economics) , coal , metre , upgrade , gas pressure , petroleum engineering , engineering , waste management , environmental science , nuclear engineering , physics , astronomy , computer science , economics , macroeconomics , operating system
The objective of this project is to demonstrate proof of principal to feed and meter granular coal into 450 psig gas pressure for use with pressurized fluidized bed combustors. This report summarizes work undertaken in the first quarter of 1999 in support of that objective. Materials testers have been designed and built to assess properties relevant to performance in the Stamet pump. Testing has been carried out to evaluate these properties for materials to be pumped. A small scale pump has been modified and preliminary testing has been carried out to assess the effectiveness of the sealing and venting modifications, and the effect of outlet material sealing plug length on required HP and gas leakage. The sealing and venting modifications worked well, and measurements of gas leakage and power requirements were in line with predictions made from the measured materials properties and pump geometry. Changes to the large scale pump test rig to upgrade to the necessary 450 psig pressure rating have been defined and components ordered. The data from the materials and small scale pump testing is being used to define the necessary changes to the large scale SBIR test pump to reach the 450 psig target