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G890: Investigation of Advanced Ash Management Technologies for CFBC and LIFAC Residues

The disposal and utilization of ashes from high temperature processes that use Ca-based sorbents for sulphur capture can be problematic. Such ashes often have various undesirable properties such as a highly exothermic reaction with water, the production of high pH leachate and destructive expansion, both in the landfill and when used in cementitious application. This report looks at the use of the CERCHAR and ash water dense suspensions (AWDS) process with CFBC and LIFAC ash residues. It also pr

Apr 1, 1992 - Apr 1, 1993

TGIG

Research

G909: The Development of Advanced Pipe Welding Technology for In-Situ Pipe Welding in Coal- Fired Power Plants

This report is intended to provide information for utility personnel to determine whether gas-shielded flux-cored arc welding (FCAW) is a viable technique for in-situ welding of low alloy steel piping in coal-fired fossil plants. Detailed analysis was performed on a number of commercial FCAW wires. All-position semi-automatic and mechanized welding procedures were developed for low alloy steel plates and piping. A weld database was developed for 5G (pipe Horizontal) mechanized pipe welding. Hard

Jul 1, 1992 - Jul 1, 1995

TGIG

Research

G659: Evaluation of Intergrated Coal Gasification Combined Cycle For Canadian Utility Applications

This study provides technical and economic data on Integrated Coal Gasification Combined Cycle (IGCC) technology for Canadian utility applications. The report presents data on the performance of IGCC plants at sites in Nova Scotia, Ontario and Alberta. It also contains capital and operating costs and implementation plans for these plants. The report discusses several R&D concepts which have the potential to improve IGCC performance and economics. The information in this report can be used to eva

Jan 1, 1990

TGIG

Research

G546: Demonstration of A Modified Combustion Emission Control System With Sorbent Injection For Nox and So2 Reduction

The primary objective of this project was to demonstrate a relatively low cost technology to control both N0x and S02 emissions for low rank fuels on a full scale 150 MW lignite coal fired steam generator. The development of a Modified Combustion Emission Control System with Sorbent Injection is detailed. The demonstration plant and operational experience with the plant are described. The test program carried out with the demonstration plant using two Saskatchewan lignite coals, Boundary Dam and

Feb 1, 1987

TGIG

Research

G775: Improved Conventional Testing of Power Plant Cables

The objective of the project was to develop novel nondestructive monitoring techniques which could be carried out from the cable terminals to assess the condition of aged power plant cables. The focus of the work was primarily on unshielded cables which are exposed to thermal and mechanical stresses. The aim of the project was to carry out field testing of the technique(s) in-situ and validate the findings in power plant environments. A second objective of the project was to determine criteria t

May 1, 1990 - Jan 1, 1991

TGIG

Research

G616: Rockwell - High Sulfur Capture

TransAlta Resources Investment Corporation, a wholly-owned subsidiary of TransAlta Utilities Corporation, has acquired Rockwell International's Low N0x/S0x (LNS) Burner technology. This burner has the potential to significantly reduce sulfur dioxide (S02) and nitrous oxides (N0x) from burning coal. In an earlier pilot-scale R&D program, the LNS burner repeatedly demonstrated the ability to provide U.S. New Source Performance Standards (NSPS) emissions control on western sub-bituminous coals. How

Dec 31, 1988

TGIG

Research

G897: N0x Modelling in Utility Boilers - Phases I & II

A numerical modelling strategy has been proposed to simulate the formation of nitric oxide in coal flames. The strategy combines the use of probability density functions and the eddy-dissipation concept to predict thermal, prompt and fuel NO. The specific components of this approach are unique. This strategy was installed in PCFlame, the CANMET two-dimensional combustion code, and successfully implemented in four test cases involving three different Canadian coals selected by CEA. In Phase II, t

Aug 1, 1992 - Aug 1, 1993

TGIG

Research

G740: Pulse-Jet Baghouse Performance Improvement with Flue Gas Conditioning

A pilot study was conducted at the Energy and Environmental Research Center (EERC) at the University of North Dakota to evaluate the effectiveness of flue gas conditioning in reducing tube sheet pressure drop and fine particulate emissions from a pulse-jet fabric filter. The work was completed with EERC facilities consisting of a pulverized coal-fired combustor and pilot baghouse. Full-scale pulse-jet bags were employed under conditions similar to large-scale baghouses. The investigation include

Jun 1, 1990 - Jul 1, 1991

TGIG

Research

G430: A Study of Characteristics of Two-Phase Flow in Network Branches

The results of an experimental investigation of the separation phenomena in dividing two-phase flow is presented. This work involved the commissioning of a steam-water loop to obtain detailed data on the characteristics of steam-water flow in horizontal T-junctions. Measurements included the pressure and void fraction distributions as well as the total flow rate and quality along the inlet and branching legs. A detailed set of experiments were performed enabling the effects of flow split, inlet

Sep 1, 1984 - Jan 1, 1987

TGIG

Research

G1002: Development of Small Punch Test to Measure Creep Resistance as Nondestructive Evaluation

The objectives of this project were aimed at providing a method of measuring the creep property of the material by means of a small punch creep test with a specimen size of 10 mm square by 0.5 mm thick. A test aparatus was developed for the small punch creep rupture test. Three groups of 2.25Cr-1Mo steel have been tested at the temperatures of 565 C, 600 C and 648 C, respectively, with the rupture time ranging from less than one hundred hours to more than one thousand hours. Creep stain vs. time

Mar 1, 1994 - Mar 1, 1996

TGIG

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