ASME PTC 47-2006 pdf download

ASME PTC 47-2006 pdf download.Integrated Gasification Combined Cycle Power Generation Plants.
2-1 DEFINITIONS absorption dynamometer: device that may be connected to the output shaft of a prime mover in place of the driven load, which absorbs the output of the prime mover while transmitting the torque to a stationary member where it can be measured accurately. accuracy: closeness of agreement between a measured value and the true value. acid gas: contaminants in the syngas, consisting ofhydro- gen sulfide (H 2 S), carbonyl sulfide (COS), and carbon dioxide (CO 2 ). Acid gas may also refer to a concentrated stream of one or more of these components. acid gas removal process: process that removes one or more ofthe acid gascomponents fromthe syngas, also referred to as the gas cleanup process. NH 3 , HCN, and HCl have several and varied methods of removal, such as a water wash, which goes to subsequent water cleanup before discharge. See ambient temperatureacidgas removal process, cold acid gas removal process, and hot acid gas removal process. additive: substance added to a gas, liquid, or solid stream to cause a chemical or mechanical reaction to enhance collection efficiency. aftercooler: heat exchanger for cooling a fluid, following the last stage of compression. agglomerating ash gasifier: type of fluid-bed gasifier that contains a hot zone in which the ash particles are agglomerated into small pellets for removal. air, corrected theoretical: theoretical air adjusted for unburned carbon and additional oxygen required to complete other reactions, i.e., the sulfation reaction. air, excess: air supplied to burn a fuel in addition to the minimum necessary for complete combustion. Excess air is expressed as a percentage ofthe corrected theoreti- cal air in this Code. air, infiltration: influx of air into the steam generator envelope. air, theoretical: amount of air required to supply the exact amount of oxygen necessary for complete combustion of a given quantity of fuel. Theoretical air and stoichio- metric air are synonymous. 3 air-blown gasifier: gasification process in which the oxi- dizing agent is supplied as air rather than oxygen. air integrated air separation unit: air separation process that receives all, or a part of, the total air feed require- ment by extraction of a portion of the compressed air from the gas turbine. air pretreatment: a unit that removes water, carbon diox- ide, and some hydrocarbon contaminants from the com- pressed air stream prior to processing in the cryogenic sections of the ASU. Pretreatment is usually based on a cyclical, adsorption/desorption(molecular sieve) based, ambient temperature process using heated, dry nitrogen produced by the ASU for regeneration of the adsorbent. ambient air: this Code recognizes that significant differ- ences in both the measured and corrected performances may result, depending upon what physical location(s) is used to represent the contract ambient, design ambi- ent, and test ambient air conditions. Because contractual language may not always resolve the meaning of ambi- ent, this Code requires the parties to the test to agree prior to the test upon which location(s) will be used to represent the ambient air condition. For example, ambient conditions may be considered to be the average of several different locations within the boundary of the site or may be the physical air inlet of equipment such as the gas turbine or the cooling tower. Once the parties have agreed upon the representative location(s), the word ambient as used in the Code shall mean the physi- cal properties of the air at that location(s). ambient temperature acid gas removal process: acid gas removal process operating at 90°F to 120°F, usually employing a chemical or mixed chemical/physical sol- vent to react with the acid gases, followed by regenera- tion of the solvent by heating. Examples of solvents and processes include methyldiethanolamines (MDEA), Sulfinol, Purisol, Selefining, and Selexol. analysis, proximate: laboratory analysis, in accordance with the appropriate ASTM standard, of a fuel sample, providing the mass percentages of fixed carbon, volatile matter, moisture, and noncombustibles (ash). analysis, ultimate: laboratory analysis, in accordance with the appropriate ASTM standard, of a fuel sample, pro- viding the mass percentages of carbon, hydrogen, oxy- gen, nitrogen, sulfur, moisture, and ash. as-fired fuel: fuel in the condition as it enters the unit boundary.