5-MW Toronto HALT (Hydrate Addition at Low Temperature) pilot plant testing: Test results: Part 1-A. [Hydrate addition at low temperature for the removal of SO/sub 2/]

Technical Report · Thu Dec 01 04:00:00 EST 1988

OSTI ID:5943624

Babu, M; Forsythe, R; Kerivan, D; Lee, K; Herbert, R; Kanary, D

''Hydrate Addition at Low Temperature'' of HALT is a dry calcium- based hydrate injection process for the removal of SO/sub 2/ from flue gases off a sulfur bearing fuel. In this process the hydrate is pneumatically conveyed and injected into the flue gas stream as a dry particulate. The flue gas is cooled downstream of the hydrate injection location by spraying the gas with a stream finely atomized water droplets. The water is atomized into a fine spray mist by using air under pressure as the atomizing fluid. The spray nozzles are specially designed. A 5MW pilot HALT was designed, constructed and operated to demonstrate the viability of the HALT process. The unit was designed to use a baghouse for particulate removal. A rented ESP was used for a pre-scheduled test period for comparison with the baghouse. Tests were conducted to cover all of the following variables: humidification, stoichiometric ratio, approach temperature, flue gas velocity, inlet flue gas SO/sub 2/ concentration, and inlet flue gas temperature. Solids samples of hydrates disposal and ESP waste solids were chemically analyzed and are reported. Hydrate samples were analyzed for particle size distribution and surface area. A two month long duration test operating 24 hours/day was successfully concluded. EPA leachate tests were conducted on the solids waste. Corrosion tests were conducted on coupons installed in the baghouse. 79 figs., 5 tabs.

• Research Organization: Dravo Lime Co., Pittsburgh, PA (USA)
• DOE Contract Number: AC22-85PC81012
• OSTI ID: 5943624
• Report Number(s): DOE/PC/81012-T1-Pt.1-A; ON: DE89012483
• Country of Publication: United States
• Language: English

Related Subjects

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200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
ADDITIVES
ALKALINE EARTH METAL COMPOUNDS
BAGHOUSES
CALCIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
COOLING
CORROSION
DIAGRAMS
DISSOLUTION
DOCUMENT TYPES
EFFICIENCY
ELECTROSTATIC PRECIPITATORS
ENGINEERING DRAWINGS
EQUIPMENT
FLUE GAS
FUNCTIONAL MODELS
GAS COOLING
GASEOUS WASTES
HOT GAS CLEANUP
HYDRATES
HYDROGEN COMPOUNDS
LEACHING
NOZZLES
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PILOT PLANTS
POLLUTION CONTROL EQUIPMENT
PROGRESS REPORT
PURIFICATION
REMOVAL
SEPARATION PROCESSES
SPRAY COOLING
SULFUR COMPOUNDS
SULFUR OXIDES
TESTING
WASTES
WATER