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PressureWave Plus _ Power Plant Services _ GE Power

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Language: en

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00:00:06.900 00:00:06.910 a combined cycle power plant relies on
00:00:14.430 00:00:14.440 the proper functioning of its gas
00:00:16.320 00:00:16.330 turbine heat recovery steam generator
00:00:18.390 00:00:18.400 and steam turbine a plant's HRSG can
00:00:23.460 00:00:23.470 often experience gas side tube fouling
00:00:26.009 00:00:26.019 on the cold end modules of the unit the
00:00:28.920 00:00:28.930 most common sources of fouling are
00:00:30.810 00:00:30.820 corrosion and oxidation or ammonia salt
00:00:33.630 00:00:33.640 deposits downstream of an SCR this can
00:00:37.170 00:00:37.180 cause reduced heat transfer efficiency
00:00:38.820 00:00:38.830 and increased back pressure to the gas
00:00:41.280 00:00:41.290 turbine which may significantly reduce
00:00:43.830 00:00:43.840 power output and efficiency traditional
00:00:47.190 00:00:47.200 cleaning methods require the
00:00:48.660 00:00:48.670 installation of scaffolding and
00:00:50.190 00:00:50.200 personnel working extended periods of
00:00:52.650 00:00:52.660 time in confined spaces this process can
00:00:55.799 00:00:55.809 only effectively claim the front facing
00:00:58.139 00:00:58.149 bundle deeper cleaning into the module
00:01:00.569 00:01:00.579 requires labor intensive tube spreading
00:01:03.920 00:01:03.930 GES pressure wave + boiler and HRSG
00:01:07.800 00:01:07.810 cleaning offers a safe and effective way
00:01:10.529 00:01:10.539 to increase plant performance without
00:01:12.870 00:01:12.880 damaging the boiler tubing it is faster
00:01:15.570 00:01:15.580 than conventional cleaning methods such
00:01:17.160 00:01:17.170 as co2 blasting offers a deeper cleaning
00:01:20.190 00:01:20.200 and requires no scaffolding and unlike
00:01:23.100 00:01:23.110 some other methods no wastewater is
00:01:25.199 00:01:25.209 generated as part of the pressure wave
00:01:27.089 00:01:27.099 plus process pressure wave cleaning is a
00:01:29.940 00:01:29.950 patented technology that has been
00:01:31.710 00:01:31.720 developed in Switzerland by Bang & clean
00:01:34.109 00:01:34.119 technologies AG and was commercially
00:01:36.690 00:01:36.700 introduced in 2001 for HRSGs this
00:01:41.339 00:01:41.349 cleaning is done offline the pressure
00:01:44.639 00:01:44.649 waves penetrate deep within the tubing
00:01:46.830 00:01:46.840 bundles to provide a more effective and
00:01:48.930 00:01:48.940 efficient process as compared to
00:01:51.029 00:01:51.039 traditional cleaning methods a special
00:01:54.059 00:01:54.069 lance is introduced into the area
00:01:56.100 00:01:56.110 between the pressure park modules a bag
00:01:58.770 00:01:58.780 at the end of the lance is then inflated
00:02:00.839 00:02:00.849 with a combustible mixture that is
00:02:02.550 00:02:02.560 remotely ignited the resulting pressure
00:02:05.160 00:02:05.170 wave and two vibrations dislodge the
00:02:07.499 00:02:07.509 deposits without damaging the tubing
00:02:10.210 00:02:10.220 this needs to be repeated at several
00:02:12.130 00:02:12.140 locations along the face of the HRSG
00:02:14.530 00:02:14.540 module to create the desired cleaning
00:02:16.750 00:02:16.760 effect once the tubing is thoroughly
00:02:19.780 00:02:19.790 cleaning the debris is then removed from
00:02:22.120 00:02:22.130 the floor of the unit a recent project
00:02:24.820 00:02:24.830 for a combined cycle plant in
00:02:26.650 00:02:26.660 southeastern USA experienced an extended
00:02:29.830 00:02:29.840 period of downtime due to an unplanned
00:02:31.900 00:02:31.910 outage upon startup the plant
00:02:34.270 00:02:34.280 experienced significant gas turbine back
00:02:36.730 00:02:36.740 pressure due to oxidation within the
00:02:38.560 00:02:38.570 HRSG which limited its ability to reach
00:02:41.110 00:02:41.120 full low traditional co2 blasting
00:02:43.960 00:02:43.970 removed a total of three tons of debris
00:02:46.090 00:02:46.100 from their HRSG but that pressure issues
00:02:48.730 00:02:48.740 remain GES pressure wave plus removed
00:02:52.210 00:02:52.220 fourteen point six tons of debris from
00:02:54.760 00:02:54.770 the same unit operational improvement
00:02:57.430 00:02:57.440 was immediate as back pressure and stack
00:02:59.710 00:02:59.720 temperature dropped back to nominal
00:03:01.360 00:03:01.370 design levels G ease pressure wave +
00:03:04.720 00:03:04.730 boiler and hrsg cleaning service
00:03:07.270 00:03:07.280 provides plan operators increased plant
00:03:09.790 00:03:09.800 performance reduces corrosion potential
00:03:12.400 00:03:12.410 and does not damage boiler tubing it is
00:03:15.670 00:03:15.680 faster than conventional cleaning
00:03:17.170 00:03:17.180 methods such as co2 blasting and offers
00:03:19.990 00:03:20.000 a deeper cleaning effect that requires
00:03:21.970 00:03:21.980 no scaffolding after over ten thousand
00:03:26.320 00:03:26.330 projects pressure wave cleaning has
00:03:28.150 00:03:28.160 proven to be a safe and effective
00:03:29.979 00:03:29.989 alternative for cleaning and maintaining
00:03:32.320 00:03:32.330 your boilers equipment contact your
00:03:34.990 00:03:35.000 local GE
00:03:36.340 00:03:36.350 for more information

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