ASME PTC 47.2-2019 pdf download
ASME PTC 47.2-2019 pdf download.Gasification Block of an Integrated Gasification Combined Cycle Power Plant.
This Code applies to gasifiers that convert liquid or solid feedstock into syngas by means ofan oxygen- or air-blown gasification process. It can be used to measure the performance ofa gasifier in its normal operating condition, with all equipment in new condition. The Code addresses the boundaries ofthe gasification blockand the principal streams movingthrough the gasification block that significantly affect its thermal performance (see Figure 3-2.2-1). This Code provides methods to measure the quality and quantity ofproduct (e.g., syngas) and by-product (e.g., slag and ash), feedstock consumption rates, oxidant consumption, steam consumption and production, water consumption, inertgas consumption, and power use. The Code includes methods for calculating cold gas efficiency and carbon conversion as examples, but these calculations are not within the scope of this Code. Gasifier performance tests conducted in accordance with this Code shall meet the following conditions: (a) A means shall be available for determining, through direct or indirect measurement, all electric power feeds entering or exiting the test boundary. (b) Ameansshallbeavailablefordetermining,throughdirectorindirectmeasurement,thecompositionandcondition of all pressurized flows entering or leaving the test boundary. (c) A means shall be available for determining, through direct or indirect measurement, all parameters required to correct test results to a base reference condition. (d) The test uncertainties shall be less than or equal to the specified uncertainty limits.
This Section contains technical definitions used in this Code. acceptancetest:theevaluatingaction(s) usedtodetermineifanewormodifiedpieceofequipmentsatisfactorilymeetsits performance criteria, permitting the purchaser to accept it from the supplier. accuracy: the closeness of agreement between a measured value and the true value. additive: a substance added to a gas, liquid, or solid stream to cause a chemical or mechanical reaction to enhance collection efficiency. agglomerating-ash gasifier:atypeoffluid-bedgasifierthatcontainsahotzoneinwhichtheashparticlesareagglomerated into small pellets for removal. air, corrected theoretical: theoretical air adjusted for unburned carbon and the additional oxygen required to complete other reactions (e.g., the sulfation reaction). air, theoretical: the amountofair required to supplythe exactamountofoxygen necessaryfor complete combustion ofa given quantity of fuel. Theoretical air and stoichiometric air are synonymous. air-blown gasifier: a type ofgasifier in which the gasification process uses air rather than oxygen as the oxidizing agent. ambient air: this Code recognizes that significant differences in both the measured and corrected performance may impactthe physical location(s) used to representthe contract, design, and testambient-air conditions. Because contrac- tuallanguagemaynotalwaysresolvethemeaningofambient,thisCoderequiresthat,beforethetest,thepartiestothetest agree on the location(s) to be used to represent the ambient-air conditions. For example, ambient conditions may be considered to be the average ofconditions at several different locations within the boundary ofthe site or may be the conditions atthe air inletofequipmentsuch as the gas turbine or the cooling tower. Once the parties have agreed on the representative location(s), the word ambient as used in the Code shall mean the physical properties of the air at the agreed-on location(s). carbon conversion efficiency: an indicator of the degree to which the fuel carbon compounds are converted to carbon- containing gaseous components. These components include carbon monoxide (CO), carbon dioxide (CO 2 ), methane (CH 4 ), carbonyl sulfide (COS), and hydrocarbon (CxHy) (CxHy includes organic gaseous compounds such as ethane, propane, and butane, and cyclic organic compounds such as benzene). minuscarbonenergyloss(theamountofenergyincarboncompoundsexitingthegasificationsystemassolid and liquid streams, divided by the fuel carbon energy input). andpossiblysomefixedcarbonfromcoal. clinker: a large, solid mass of coal ash agglomerated by ash slagging. coal-drying fuel: fuel burned to supply additional thermal energy for drying coal. coal rank: a classification of coal based on fixed carbon, volatile matter, and heating value. It is an indication of the progressive alternation, or coalification, from lignite to anthracite: lignite, subbituminous coal, bituminous coal, and anthracite. coke:the hard, porous material producedwhenvolatile constituents have beendrivenoffbyheat, so thatthe fixedcarbon and ash are fused together. In the steel industry, coke is made from bituminous coal orblends ofcoal. Petroleum coke is a similar material that is derived from oil refinery operations and usually contains a high sulfur content.
