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Title: Geothermal materials project input for conversion technology task

Abstract

This ongoing laboratory-based high risk/high payoff R D program has already yielded several durable cost-effective materials of construction which are being used by the geothermal energy industry. In FY 1992, R D in the following areas will be performed: (1) advanced high-temperature (300{degrees}C) CO{sub 2}-resistant lightweight well-cementing materials, (2) high-temperature chemical systems for lost-circulation control, (3) thermally conductive composites for heat exchange applications, (4) corrosion mitigation at the Geysers, and (5) high-temperature chemical coupling materials to bond elastomers to steel substrates. Work to address other materials problems will commence in FY 1993, as their needs are verified. All of the activities will be performed as cost-shared activities with other National Laboratories and/or industry. Successful developments will significantly reduce the cost of well drilling and completion, and energy-extraction processes. 3 figs., 2 tabs.

Authors:
Publication Date:
Research Org.:
Brookhaven National Lab., Upton, NY (USA)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (USA)
OSTI Identifier:
5781723
Report Number(s):
BNL-46274
ON: DE91014793
DOE Contract Number:
AC02-76CH00016
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; BNL; RESEARCH PROGRAMS; GEOTHERMAL ENERGY; CEMENTS; CORROSION; COST; ELASTOMERS; ENVIRONMENT; HIGH TEMPERATURE; PROGRAM MANAGEMENT; PROGRESS REPORT; ROCK DRILLING; SAFETY; TECHNOLOGY TRANSFER; THERMAL CONDUCTIVITY; WELL CASINGS; BUILDING MATERIALS; CHEMICAL REACTIONS; DOCUMENT TYPES; DRILLING; ENERGY; ENERGY SOURCES; MANAGEMENT; MATERIALS; NATIONAL ORGANIZATIONS; PHYSICAL PROPERTIES; POLYMERS; RENEWABLE ENERGY SOURCES; THERMODYNAMIC PROPERTIES; US AEC; US DOE; US ERDA; US ORGANIZATIONS; Geothermal Legacy; 150903* - Geothermal Engineering- Corrosion, Scaling & Materials Development; 150901 - Geothermal Engineering- Drilling Technology & Well Hardware; 150500 - Geothermal Energy- Economics, Industrial, & Business Aspects

Citation Formats

Kukacka, L.E.. Geothermal materials project input for conversion technology task. United States: N. p., 1991. Web. doi:10.2172/5781723.
Kukacka, L.E.. Geothermal materials project input for conversion technology task. United States. doi:10.2172/5781723.
Kukacka, L.E.. Mon . "Geothermal materials project input for conversion technology task". United States. doi:10.2172/5781723. https://www.osti.gov/servlets/purl/5781723.
@article{osti_5781723,
title = {Geothermal materials project input for conversion technology task},
author = {Kukacka, L.E.},
abstractNote = {This ongoing laboratory-based high risk/high payoff R D program has already yielded several durable cost-effective materials of construction which are being used by the geothermal energy industry. In FY 1992, R D in the following areas will be performed: (1) advanced high-temperature (300{degrees}C) CO{sub 2}-resistant lightweight well-cementing materials, (2) high-temperature chemical systems for lost-circulation control, (3) thermally conductive composites for heat exchange applications, (4) corrosion mitigation at the Geysers, and (5) high-temperature chemical coupling materials to bond elastomers to steel substrates. Work to address other materials problems will commence in FY 1993, as their needs are verified. All of the activities will be performed as cost-shared activities with other National Laboratories and/or industry. Successful developments will significantly reduce the cost of well drilling and completion, and energy-extraction processes. 3 figs., 2 tabs.},
doi = {10.2172/5781723},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Apr 01 00:00:00 EST 1991},
month = {Mon Apr 01 00:00:00 EST 1991}
}

Technical Report:

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  • This ongoing laboratory-based high risk/high payoff R and D program has already yielded several durable cost-effective materials of construction for geothermal energy processes. In FY 1991, R and D in the following areas will be performed: (1) development and downhole testing of advanced high-temperature (300{degrees}C) CO{sub 2}-resistant lightweight (1.1 g/cc) well-cementing materials, (2) high-temperature chemical systems for lost-circulation control, (3) thermally conductive scale-resistant composites for heat-exchanger tubing, (4) high-temperature chemical coupling materials which can be used to bond elastomers to steel substrates, and (5) high-temperature elastomers for use in downhole drill motors. Contingent upon the results, work on heat-exchanger tubingmore » and lost-circulation control materials will be completed FY 1991 and the other activities will be continued in FY 1992. Work on other materials needs will commence in FY 1992. These include the in situ conversion of drilling fluids into well-completion materials and ceramic-type well casing. All of the subtasks will be performed as cost-shared activities with other National Laboratories and/or industry. Successful developments will significantly reduce the cost of well drilling and completion, and energy-extraction processes. Results to date are discussed. 2 refs., 2 figs., 2 tabs.« less
  • This report presents a detailed design of a process development unit (PDU) for the riser cracking of coal to produce fuel gases, high-octane motor gasoline blending stock, and fuel oil. At the maximum design capacity, 100 lb/hr of feed coal and 12 lb/hr of hydrogen can be processed. The riser reactor is not equipped with external heaters; the heat needed to accomplish the hydropyrolysis will be generated by the combustion of small quantities of oxygen or air injected into the riser reactor. Because of the ''balanced pressure'' design, operating temperatures as high as 1800/sup 0/F at 2000 psig can bemore » readily obtained, allowing the PDU to be operated in an SNG production mode, as well as the lower temperature pyrolysis for the production of liquid fuels.« less
  • The second and third segments of a 1000 hour exposure test of potential gas turbine and boiler tube materials for use in Pressurized Fluidized Bed Coal Combustion were successfully completed. This brought the total exposure time to 565 hours on the gas turbine specimens and 682 hours on the heat exchanger specimens. The 100 hour test (Run 79) had to be terminated prematurely because of a plug in the solids discharge line from the first (recycle) cyclone. The 215 hour test (Run 80) was interrupted at the 82 hour mark to replace a leaking valve. After the interruption, the turbinemore » flow rate dropped 12% as a result of a blockage at the turbine inlet. The lower level flow, still within specifications, was maintained for the duration of the run. Measurements of the particulate loading entering the gas turbine during Run 79 indicated a rise in loading from a level of 0.01 gr/SCF at the beginning to 0.03 gr/SCF near the end of the test. This increase was presumably a consequence of the first cyclone dipleg plugging. The particulate had a mass median size of 1.5 microns with little variation from the beginning to the end of the test. During Run 80 particulate measurements taken before and after the turbine were low and consistent, averaging about 0.02 gr/SCF. The particulates had a mass median size of 1.2 microns. The gas turbine specimens showed no visible signs of attack after 565 hours. There was, however, substantial flyash deposition, similar to the deposits found after the first 250 hour test. All the heat exchanger probe specimens looked satisfactory except for an Inconel 800/Hastelloy X probe controlled at 1400/sup 0/F. There was considerable wastage and a small rupture near the capped end. A piece was removed for analysis and the probe repaired for future tests.« less
  • The first portion of a 1000 hour exposure test of potential gas turbine and boiler tube materials suitable for use in Pressurized Fluidized Bed Coal Combustion (PFBC) was successfully completed. A 250 hour test was carried out in the Exxon PFBC Miniplant under realistic test conditions. The run was interrupted for one six hour period. Flue gas temperatures downstream of the combustor were maintained at 1550/sup 0/F or higher. Gas turbine and boiler tube specimens showed no obvious signs of damage after the 250 hour test. The gas turbine specimens showed some signs of deposition, but the deposits were easilymore » removed by brushing.« less