dirty air flow test for al mill
2023-03-06T10:03:57+00:00
Mill Dirty Air Flow Ch86
86 MILL DIRTY AIR FLOW TEST 861 Intoduction The factors affecting pulveriser performance include grindability of coal, moisture content of coal, size of input coal, wear condition of grinding elements and classifier, fineness of pulverized coal, primary air quantity and temperature On a daytoday basis, mill performance is monitored Dirty air test equipment asfound test data show that coal pipe flow far exceeded the recommended ±10% deviation limit and that there was high variability in coal fineness The next step Pulverized Coal Pipe Testing and BalancingPurpose Of Dirty Air Test In Mill Protable Plant » mill test certificate as per en 10204 » test method for bond ball mill work index » ball seat mill test » why power plant mill area hot air and cold air usingCoal Mill Dirty Air Test Analysis The dirty air pitot (DAP) probe is utilized to measure air velocity, pressure, and temperature within a flow stream that is heavily laden with particulate Compared to other pressuretype velocity probes, the design of the DAP reduces the potential for pluggage of the pressure lines, Dirty Air Probe (DAP) Test System Airflow Sciences on clean air and then followed by dirty air and isokinetic coal fineness measuring and sampling When fuel flows are uniform to each coal pipe inlet, and the pipes have been previously balanced for similar system resistances, then dirty air velocities tend to be within ±5% of the mean coal pipe dirty air velocityMeasuring Coal Pipe Flow Storm Technologies, Inc
coal milling dynaclone air flow measurement
dirty air flow test of coal mill Primary Air Flow Mill Inlet or Coal Pipe Flow Rate Velocity Temperature “Clean Air” Testing “Dirty Air” Testing Coal pipe testing with Advanced Coal Flow Measurement (ACFM) device COALGEN 2005 August 17, 2005 San Antonio, Texas Extractive Sampling Methodology Coal Flow Isokinetic sampling based on COALGEN 2005 August 17, 2005 – San Antonio, Texas EPRI Coal Flow Loop Project Objectives Develop a Research Facility with Controlled and Known Conditions Operate in full scale with coal Precise control over air and coal flow rates Evaluate Online Coal Flow Instrumentation Accuracy Sensitivity to piping layout, flow rates, temperature, Pulverized Coal Extractive Testing Methods mill coal fineness produced and to calculate pulverizer performance We perform isokinetic coal sampling The first test conducted by a testing crew is the dirty air traverse That test uses the same sampling points Where to take coal flow measurements on coal pipes Source: Storm Technologies IncPulverized Coal Pipe Testing and Balancing A dirty air probe is required when measuring flow velocity in an operating coal pipe The dirty air velocities of each pipe should be within 5% of the mean of all the coal Measuring Coal Pipe Flow POWER Magazine ASME Coal Fineness Sampling Test Procedure Rev 3/2010 Page 1 2367 LAKESIDE DRIVE, SUITE A1 BIRMINGHAM, AL 35244 DIRTY AIR TAP CLEAN AIR TAP 11/4" NPT Full Port Ball Valve 1/2” NPT Plugs number by the control room indicated coal flow in pounds per hour to calculate coal ASME Coal Sampling Test Procedure
Pulverized Coal Pipe Testing and Balancing
The first test conducted by a testing crew is the dirty air traverse That test uses the same sampling points when measuring velocities in the pipes By measuring the true velocity flowing through the pipe, guessing an unknown velocity, as required by the ASME test procedure, is eliminated After the dirty air velocity test is completed, the COALGEN 2005 August 17, 2005 – San Antonio, Texas Coal Pipe Flow Measurement Methods Online, continuous measurement Realtime coal balance information Data over the load range Extractive measurement Pipe to pipe air and coal flow balance Data at select operating conditions Pulverized coal samplesPulverized Coal Extractive Testing Methods A dirty air probe is required when measuring flow velocity in an operating coal pipe The dirty air velocities of each pipe should be within 5% of the mean of all the coal pipes to achieve uniform Measuring Coal Pipe Flow POWER Magazine Temperature Of Coal –Air Mixture At Mill Outlet Dirty air flow distribution should be within +/ 5% Coal distribution within +/ 10% of the mean value 56 Fuel line balance 57 Clean Air Flow Test • Clean Air flowing through the fuel lines at normal operating temp and presPulverizer Plant OM AspectsDistribution of the coal flow in the millduct system of the As cal suction velocities in the sample nozzles to the gas ones in the millduct Full scale model fabri ion and certified wind tunnel test ing are used to develop one consisting of one gas/coal inlet and three air inletscold air velocity test at coal mill inlet Prominer
ASME Coal Sampling Test Procedure
DIRTY AIR TAP CLEAN AIR TAP 11/4" NPT Full Port Ball Valve 1/2” NPT Plugs Pipe Wall Drilled with 45/64 Drill (703) Notes: 1 The 11/4” NPT Connections must fit a 1050 sample probe 2 The ball valve plus half coupling plus close nipple should be (+/) 1/8” of the same length for max productivity of test team (to avoid difference in COAL TO ENERGY FOR SUSTAINABLE DEVELOPMENT COAL TO ENERGY FOR SUSTAINABLE DEVELOPMENT AGREEMENTS Gross Turbine Cycle Heat Rate Test (GTCHR) HP HEATER PERFORMANCE MILL DIRTY AIR FLOW TEST CEP – PERFORMANCE OPTIMIZATION Condition Based Maintenance Loss Optimisation In BoilersDownload Engineers Welfare Forum settlement of coal in coal pipes poor coal fineness low pa temperature foreign material ingress loss through rejection wear part life pmi revision 00 5 may 24, 2012 mill performance identification methods no load run clean air flow test dirty pitot tube test mill fineness sampling trending of coal pipe metal temperature may 24, 2012 pmi Mill Performance Mechanical Engineering Nature the insensitivity of air flow distribution to flow controller setting greatly simplifies the balancing process This makes it possible to first balance the dirty air flow using orifices in the outlet pipes and then balance coal flow using the adjustable coal flow balancing system” Levy continues, “The coal flow control system has also beenJune 2003, Vol 21 (2) FIELD TESTS CONFIRM mill at coalfired power plant in Malaysia Coal flow distribution were sampled from the vertical straight PC pipes just after the pulverizer by using Dirty air pitot (DAP) and Pulverized Fuel Sampler (PFS) to measure the flow velocity and extract coal samples [8] To ensure isokinetic sampling, the sampling gas velocity is maintained at theDLUIORZWRFRDOSDUWLFOHGLVWULEXWLRQLQFRDO
Measuring Coal Pipe Flow POWER Magazine
A dirty air probe is required when measuring flow velocity in an operating coal pipe The dirty air velocities of each pipe should be within 5% of the mean of all the coal pipes to achieve uniform Distribution of the coal flow in the millduct system of the As cal suction velocities in the sample nozzles to the gas ones in the millduct Full scale model fabri ion and certified wind tunnel test ing are used to develop one consisting of one gas/coal inlet and three air inletscold air velocity test at coal mill inlet Prominer The Advanced Coal Flow Measurement System (ACFM) was designed and developed strictly to measure air and fuel flows through coal pipes It is a computercontrolled PCbased isokinetic extraction type testing system It utilizes a dirty air probe for air flow measurement, and (3) types of advanced coal sampling probes The computer controlled isokinetic extraction rate is adjusted point ACFM Extractive Fuel Coal Pipe Testing Balance DIRTY AIR TAP CLEAN AIR TAP 11/4" NPT Full Port Ball Valve 1/2” NPT Plugs Pipe Wall Drilled with 45/64 Drill (703) Notes: 1 The 11/4” NPT Connections must fit a 1050 sample probe 2 The ball valve plus half coupling plus close nipple should be (+/) 1/8” of the same length for max productivity of test team (to avoid difference in ASME Coal Sampling Test Procedure uses coal recovery/dirty air methods The coal testing is typically done per ASME/ASTM, ISO or a density and mass flow in each coal pipe The real time data trends are used and clean air conditions when the feeder is shut down and the mill is stripped of coal (Graph 7) Figure 5 — Graph 3: Pipe to Pipe Balance 5 6PfFLO III Vs Conventional Coal Balance Testing
INNOVATIVE CLEAN COAL TECHNOLOGY (ICCT)
The project has completed the baseline, AOFA, LNB, and LNB+AOFA test segments, fulfilling all testing originally proposed to DOE Deviation of Coal Pipe Coal from Mill Average Flow 34 Figure 2 1 : Measured Dirty Air Velocity by Mill and Coal Pipe 35 Figure 22: Deviation of Coal Pipe Dirty Air Velocity from Mill COAL TO ENERGY FOR SUSTAINABLE DEVELOPMENT COAL TO ENERGY FOR SUSTAINABLE DEVELOPMENT AGREEMENTS Gross Turbine Cycle Heat Rate Test (GTCHR) HP HEATER PERFORMANCE MILL DIRTY AIR FLOW TEST CEP – PERFORMANCE OPTIMIZATION Condition Based Maintenance Loss Optimisation In BoilersDownload Engineers Welfare Forum settlement of coal in coal pipes poor coal fineness low pa temperature foreign material ingress loss through rejection wear part life pmi revision 00 5 may 24, 2012 mill performance identification methods no load run clean air flow test dirty pitot tube test mill fineness sampling trending of coal pipe metal temperature may 24, 2012 pmi Mill Performance Mechanical Engineering Nature the insensitivity of air flow distribution to flow controller setting greatly simplifies the balancing process This makes it possible to first balance the dirty air flow using orifices in the outlet pipes and then balance coal flow using the adjustable coal flow balancing system” Levy continues, “The coal flow control system has also beenJune 2003, Vol 21 (2) FIELD TESTS CONFIRM mill at coalfired power plant in Malaysia Coal flow distribution were sampled from the vertical straight PC pipes just after the pulverizer by using Dirty air pitot (DAP) and Pulverized Fuel Sampler (PFS) to measure the flow velocity and extract coal samples [8] To ensure isokinetic sampling, the sampling gas velocity is maintained at theDLUIORZWRFRDOSDUWLFOHGLVWULEXWLRQLQFRDO
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