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How two refineries maximized uptime and minimized maintenance cost in the visbreaking processes
WEBVTT Kind: captions Language: en
00:00:06.859 our next speaker is ava anderson from 00:00:12.41000:00:12.420 alfa laval and eva has over 20 years of 00:00:17.24000:00:17.250 work experience with alpha labelled as 00:00:19.13000:00:19.140 heat exchange expert within various 00:00:21.43900:00:21.449 industries and senior roles which 00:00:23.90000:00:23.910 includes local market development and 00:00:26.08900:00:26.099 support manager for refineries refinery 00:00:29.20000:00:29.210 regional manager for Southeast Asia and 00:00:31.93900:00:31.949 global business development manager 00:00:33.37000:00:33.380 aromatic businesses so she graduated 00:00:37.31000:00:37.320 from month university in sweden and 00:00:39.04900:00:39.059 ultimo stirs in chemical engineering 00:00:40.58000:00:40.590 from mcgill university in canada a lot 00:00:44.11900:00:44.129 of publications please read the the full 00:00:48.22900:00:48.239 list yourself in the in the bio and 00:00:51.02000:00:51.030 that's my pleasure to hand over the 00:00:53.33000:00:53.340 floor thank you very much Damon thank 00:00:56.60000:00:56.610 you very much everybody for still being 00:00:59.06000:00:59.070 here still being strong no siesta yet 00:01:02.24000:01:02.250 and also thank you very much for the 00:01:04.70000:01:04.710 organizers for having our second 00:01:06.74000:01:06.750 presentation here during this week so 00:01:10.27000:01:10.280 yesterday we present it on more related 00:01:14.42000:01:14.430 to energy efficiency and material 00:01:17.17900:01:17.189 upgrading to avoid corrosion problems in 00:01:19.85000:01:19.860 overhead systems in this bottom of the 00:01:23.42000:01:23.430 bedrock conference we are focusing on 00:01:25.31000:01:25.320 the other end with opening on the bottom 00:01:27.23000:01:27.240 of the fractionators so this 00:01:29.56900:01:29.579 presentation is going to be about how to 00:01:31.60900:01:31.619 maximize the profit from heavy oil 00:01:33.98000:01:33.990 processes and by coincidence we will 00:01:37.58000:01:37.590 also talk about the best sprinter 00:01:39.08000:01:39.090 process which means very good setting of 00:01:41.84000:01:41.850 the 00:01:42.36000:01:42.370 that of the organizers we will mention a 00:01:45.51000:01:45.520 little bit about the heavy oil processes 00:01:47.94000:01:47.950 but we have already heard a lot about 00:01:49.35000:01:49.360 those during today and definitely from 00:01:52.71000:01:52.720 people who are much more specialist in 00:01:54.99000:01:55.000 this area than I am but then we will 00:01:58.14000:01:58.150 focus a little bit on the Alfa Laval 00:01:59.93000:01:59.940 solution to how to tackle fouling 00:02:02.97000:02:02.980 problems in those heavy oil processes 00:02:06.00000:02:06.010 and like we just heard from dwarf cattle 00:02:08.60900:02:08.619 and SRC we believe that having the right 00:02:11.94000:02:11.950 heat exchanger technology together with 00:02:14.16000:02:14.170 the right antifouling chemical is 00:02:16.95000:02:16.960 probably the best solution to minimize 00:02:19.38000:02:19.390 problems and then we will finish with a 00:02:22.83000:02:22.840 case story which is from an Iberian 00:02:25.53000:02:25.540 refinery and the refinery was increasing 00:02:30.78000:02:30.790 the capacity of their voice breaking 00:02:32.25000:02:32.260 unit with forty percent and we will 00:02:35.10000:02:35.110 follow the performance of the spy.road 00:02:37.65000:02:37.660 heat exchangers during the operation 00:02:39.72000:02:39.730 since then so that's four years so just 00:02:44.43000:02:44.440 a very very quick and somatic overview 00:02:47.13000:02:47.140 of a refinery and what we would 00:02:49.59000:02:49.600 typically call the bottom of the barrel 00:02:52.26000:02:52.270 processes so we're looking at coking as 00:02:55.74000:02:55.750 mentioned in the earlier session here 00:02:57.69000:02:57.700 and des felting which was also mentioned 00:03:00.42000:03:00.430 earlier we are of course talking about 00:03:02.91000:03:02.920 hydrocracking we're talking about 00:03:05.01000:03:05.020 bitumen processes to a certain extent 00:03:07.97900:03:07.989 we're talking about catalytic crackers 00:03:10.05000:03:10.060 and we're talking about this breaking 00:03:12.66000:03:12.670 units and to maximize the profit from 00:03:18.03000:03:18.040 those heavy oil processes it is as we 00:03:22.08000:03:22.090 have also heard several times today it's 00:03:25.14000:03:25.150 about maximizing the conversion rate so 00:03:27.87000:03:27.880 getting more valuable products out from 00:03:30.36000:03:30.370 the residues maximizing the capacity and 00:03:35.04000:03:35.050 put but that also means maximizing the 00:03:38.22000:03:38.230 availability of those glands so making 00:03:40.80000:03:40.810 sure that you can extend the run links 00:03:43.23000:03:43.240 for as long as possible in between 00:03:45.60000:03:45.610 maintenance requirements maximizing 00:03:49.35000:03:49.360 plant reliability the fewer stops you do 00:03:52.80000:03:52.810 the more reliable is the process unit 00:03:56.07000:03:56.080 and as we just heard fouling in heat 00:04:00.90000:04:00.910 exchangers in pre heat trains will have 00:04:03.54000:04:03.550 a very negative impact on the energy 00:04:05.46000:04:05.470 efficiency of the processes so the more 00:04:08.73000:04:08.740 you can operate your pre heat train 00:04:11.22000:04:11.230 we've reduced fouling issues the more 00:04:14.07000:04:14.080 energy efficient your processes will be 00:04:16.19900:04:16.209 and finally minimizing of course the 00:04:19.86000:04:19.870 maintenance costs so if we are looking 00:04:22.53000:04:22.540 at these five parameters what is the 00:04:28.26000:04:28.270 drawback of the conventional technology 00:04:32.09000:04:32.100 well one very obvious drawback is the 00:04:35.64000:04:35.650 size of conventional shell and tube heat 00:04:38.19000:04:38.200 exchangers in the feed residue preheat 00:04:42.93000:04:42.940 trade for a new unit the amount of heat 00:04:48.33000:04:48.340 exchangers and the size of heat 00:04:50.22000:04:50.230 exchangers are going to lead to a 00:04:52.35000:04:52.360 substantial catholics a cost and for an 00:04:56.79000:04:56.800 existing unit which needs to increase 00:04:59.19000:04:59.200 capacity there is plenty there is just 00:05:03.27000:05:03.280 no room no footprint to add more heat 00:05:06.63000:05:06.640 and transfer efficiency into the preheat 00:05:09.21000:05:09.220 rain and now the typical problem those 00:05:12.72000:05:12.730 shell and tube heat exchangers will have 00:05:14.58000:05:14.590 is the fouling as we just heard so they 00:05:18.48000:05:18.490 normally suffer from quite severe 00:05:20.46000:05:20.470 fouling problems which doesn't only 00:05:23.22000:05:23.230 short-term the run length of the units 00:05:26.10000:05:26.110 and increase the energy 00:05:28.25000:05:28.260 sumption but the maintenance the 00:05:31.10000:05:31.110 cleaning of those heat exchangers itself 00:05:33.44000:05:33.450 can be a very tedious work and can be a 00:05:36.89000:05:36.900 quite health and safety concern for the 00:05:40.79000:05:40.800 workers as it is a carcinogenic fouling 00:05:44.51000:05:44.520 that needs to be removed so because of 00:05:48.68000:05:48.690 these obvious drawbacks of conventional 00:05:51.29000:05:51.300 technology it is becoming more and more 00:05:54.59000:05:54.600 industry standard to start looking at 00:05:57.44000:05:57.450 other heat transfer technology for feed 00:06:01.30000:06:01.310 residue in the changes in the preheat 00:06:04.37000:06:04.380 trains in heavy oil processes and the 00:06:08.26000:06:08.270 spiral heat exchanger which is maybe for 00:06:11.84000:06:11.850 some of you a new technology it's 00:06:14.36000:06:14.370 actually a very old technology it was 00:06:16.73000:06:16.740 developed the patent was taken in 1880 I 00:06:20.81000:06:20.820 don't know if you can do the math 130 00:06:23.45000:06:23.460 years old technology at that time there 00:06:27.17000:06:27.180 was not any machinery that could 00:06:29.33000:06:29.340 actually produce the spiral heat 00:06:31.22000:06:31.230 exchangers so the first exchanges were 00:06:33.65000:06:33.660 only produced in 1940 but it still 75 00:06:37.73000:06:37.740 years old they were developed for pulp 00:06:40.88000:06:40.890 and paper industry to handle very high 00:06:43.64000:06:43.650 fiber content influence and little by 00:06:47.60000:06:47.610 little they have been starting to be 00:06:49.19000:06:49.200 used more and more in process industries 00:06:51.50000:06:51.510 as well starting with petrochemical 00:06:54.74000:06:54.750 plants with slurries and polymers like 00:07:01.13000:07:01.140 PVC polymers and more and more getting 00:07:03.95000:07:03.960 into also the refinery applications 00:07:06.20000:07:06.210 where they have today around 30 years of 00:07:09.11000:07:09.120 experience the main process is where 00:07:12.98000:07:12.990 they are being used or as you can see in 00:07:15.92000:07:15.930 this pie chart in be too late' processes 00:07:19.43000:07:19.440 or met in the DA's 14 units it's in 00:07:23.78000:07:23.790 coker's it's in catalytic crackers it's 00:07:27.41000:07:27.420 in hydro crackers and it is simply 00:07:30.05000:07:30.060 units so today there are more than 140 00:07:32.84000:07:32.850 spiral heat exchangers operating in 00:07:35.30000:07:35.310 refineries in these applications around 00:07:37.79000:07:37.800 the world so why has this technology 00:07:40.87900:07:40.889 become so interesting for the market 00:07:44.80000:07:44.810 well here we are listed the most typical 00:07:48.50000:07:48.510 the main characters of the spiral heat 00:07:51.62000:07:51.630 exchangers so first of all it has a very 00:07:54.32000:07:54.330 high energy efficiency it's a completely 00:07:57.32000:07:57.330 counter current flow heat exchanger and 00:08:00.05000:08:00.060 you can go to very close temperature 00:08:02.71900:08:02.729 approaches you can have a temperature 00:08:04.73000:08:04.740 approach of around five degrees C which 00:08:07.52000:08:07.530 means you're cold media can be heated to 00:08:10.12900:08:10.139 a temperature and includes 25 degrees of 00:08:13.40000:08:13.410 the inlet temperature of the heating 00:08:15.29000:08:15.300 media because of the spiral channel it 00:08:19.01000:08:19.020 also has two to three times higher heat 00:08:21.29000:08:21.300 transfer efficiency than conventional 00:08:23.21000:08:23.220 shell and you heat exchangers which 00:08:25.15900:08:25.169 means you're gonna need two to three 00:08:26.84000:08:26.850 times less heat transfer area that two 00:08:31.34000:08:31.350 to three times less heat transfer area 00:08:33.05000:08:33.060 is assembled in a very compact way which 00:08:37.19000:08:37.200 means you can squeeze around 2,000 00:08:40.67000:08:40.680 square meter of shell and tube heat 00:08:42.80000:08:42.810 transfer area in less than 10 square 00:08:45.71000:08:45.720 meter of plot space so even in a very 00:08:50.24000:08:50.250 cramped area you can still fit these 00:08:52.85000:08:52.860 exchangers if you are revamping for 00:08:55.31000:08:55.320 additional capacity in an addition you 00:08:58.16000:08:58.170 don't need a lot of area for the service 00:09:00.65000:09:00.660 because you don't need to be able to 00:09:02.54000:09:02.550 pull out six to seven to nine metre long 00:09:05.54000:09:05.550 two bundles you just need enough space 00:09:07.76000:09:07.770 to remove the covers to do the 00:09:10.88000:09:10.890 maintenance of these exchangers another 00:09:14.63000:09:14.640 advantage is the flexible channel 00:09:16.61000:09:16.620 spacing you can play with the channel 00:09:18.82900:09:18.839 spacing from five million meter spacing 00:09:20.90000:09:20.910 to 140 millimeters 00:09:22.80000:09:22.810 spacing which means you can cater for 00:09:25.26000:09:25.270 quite high solids content and solid size 00:09:28.92000:09:28.930 in the fluids and you can do that on 00:09:31.23000:09:31.240 both hot and cold side so you don't need 00:09:34.11000:09:34.120 to if you have to fouling media's you 00:09:35.88000:09:35.890 don't need to sacrifice one of them by 00:09:38.31000:09:38.320 putting it on the shed side of a shell 00:09:40.11000:09:40.120 and tube heat exchanger then it is like 00:09:44.43000:09:44.440 a shadow tube heat exchanger it's a 00:09:46.38000:09:46.390 welded construction so it means you can 00:09:48.72000:09:48.730 go up to very high design pressures up 00:09:51.26900:09:51.279 to hundred bars and we can go up to 00:09:53.97000:09:53.980 decide temperatures of up to 450 degrees 00:09:56.43000:09:56.440 C but that is not the most interesting 00:10:01.35000:10:01.360 part with the spiral heat exchanger the 00:10:05.34000:10:05.350 most interesting part is what is called 00:10:07.56000:10:07.570 the self-cleaning effect this Bible is 00:10:11.01000:10:11.020 constructed with a single channel for 00:10:13.41000:10:13.420 the cold media and a single channel for 00:10:15.87000:10:15.880 the hot media it means there is no 00:10:18.12000:10:18.130 chance to get mal distribution if you 00:10:21.75000:10:21.760 start getting a little bit of settling 00:10:23.64000:10:23.650 in the heat transfer channel the fluid 00:10:26.43000:10:26.440 cannot choose another path it still 00:10:28.82900:10:28.839 needs to go through that same channel 00:10:31.41000:10:31.420 and with a little bit reduced and cross 00:10:34.65000:10:34.660 section the local velocities will 00:10:37.14000:10:37.150 increase and in the end you will get the 00:10:39.30000:10:39.310 scrubbing effect that will clean out the 00:10:41.73000:10:41.740 heat transfer channel so there will be 00:10:43.92000:10:43.930 fouling up to a certain extent but once 00:10:47.28000:10:47.290 you reach that threshold there is no 00:10:49.77000:10:49.780 more fouling the fouling will be the 00:10:51.57000:10:51.580 following rate will be constant so in 00:10:55.26000:10:55.270 addition to this single channel 00:10:57.45000:10:57.460 self-cleaning affect the spiral doesn't 00:11:00.96000:11:00.970 have any dip sauce there are no big 00:11:03.96000:11:03.970 collection boxes there are no turning 00:11:06.42000:11:06.430 Chandler's there is no area behind 00:11:08.64000:11:08.650 baffles there are no dead zones where 00:11:11.61000:11:11.620 fouling can also be building up and 00:11:14.72000:11:14.730 because of the high heat transfer fishin 00:11:17.13000:11:17.140 see the residence time is short which 00:11:19.94900:11:19.959 means there is also less time for the 00:11:22.65000:11:22.660 asphaltene to precipitate and build up 00:11:25.23000:11:25.240 on the heat 00:11:29.60000:11:29.610 so that is coming to this case story 00:11:33.60000:11:33.610 from an Iberian refinery this refinery 00:11:37.44000:11:37.450 wanted to increase the capacity of their 00:11:39.75000:11:39.760 whispering unit with forty percent it 00:11:42.75000:11:42.760 was not really related to the dis 00:11:44.70000:11:44.710 breaking unit itself but it was because 00:11:47.07000:11:47.080 they had installed a new hydro cracker 00:11:48.75000:11:48.760 and to feed the new hydro cracker they 00:11:51.60000:11:51.610 built a new vacuum distillation unit and 00:11:53.97000:11:53.980 that made him distillation unit had 00:11:56.07000:11:56.080 additional capacity which meant they had 00:11:58.95000:11:58.960 to increase the capacity of their 00:12:00.96000:12:00.970 existing restraining units and weave 00:12:03.84000:12:03.850 around forty percent and the existing 00:12:06.48000:12:06.490 shell and chips in the preheat rain just 00:12:09.27000:12:09.280 couldn't handle this increasing capacity 00:12:11.63000:12:11.640 they were both thermal limitations in 00:12:14.79000:12:14.800 the degree of heat recovery that they 00:12:17.07000:12:17.080 could do and hydraulic limitations so 00:12:21.06000:12:21.070 the refinery instead decided to look for 00:12:23.16000:12:23.170 spiral heat exchanger solution we saw 00:12:27.75000:12:27.760 quite recently from Singapore very 00:12:30.24000:12:30.250 similar process scheme for a typical 00:12:32.43000:12:32.440 vibrated unit just to show you from the 00:12:35.61000:12:35.620 main fractionator the residue from the 00:12:38.10000:12:38.110 hiss breaker is being used to heat the 00:12:41.28000:12:41.290 feed go into the fire theatre that is 00:12:44.22000:12:44.230 the feed preheat trained in this 00:12:47.28000:12:47.290 specific refinery it was a very complex 00:12:51.12000:12:51.130 preheat train it was not as simple as 00:12:54.39000:12:54.400 six Shannon soups in Syria error 6 2 by 00:12:58.02000:12:58.030 3 I guess right to in parallel 3 and 00:13:00.33000:13:00.340 serious it was actually two positions 00:13:03.96000:13:03.970 one position having eight shell and tube 00:13:07.08000:13:07.090 heat exchangers it was a two in parallel 00:13:11.67000:13:11.680 for in serious but after the quench 00:13:14.43000:13:14.440 going back to the column there was a 00:13:16.20000:13:16.210 second position with another for shell 00:13:18.87000:13:18.880 and tube heat exchangers and for the 00:13:21.84000:13:21.850 final preheat or sorry final cooling of 00:13:24.36000:13:24.370 the VIS breaking residue before sending 00:13:27.51000:13:27.520 it for Eckstein generation so in total 00:13:31.08000:13:31.090 there were 12 00:13:32.79000:13:32.800 iam heat exchangers this 12 shell and 00:13:36.54000:13:36.550 tube heat exchangers were replaced by 00:13:38.88000:13:38.890 two spiral heat exchangers and those two 00:13:42.54000:13:42.550 spiral heat exchangers of them doing 00:13:45.18000:13:45.190 forty percent more capacity these two 00:13:49.47000:13:49.480 spirals they are in serious they don't 00:13:52.44000:13:52.450 go cool the residue down to a lower 00:13:55.88900:13:55.899 temperature than what the first set of 00:13:59.69900:13:59.709 shell and tube heat exchanges were doing 00:14:01.47000:14:01.480 but they don't cool all the way down to 00:14:04.44000:14:04.450 the same temperatures as the twelve 00:14:06.15000:14:06.160 chillin tubes were doing so an extra set 00:14:09.26900:14:09.279 of steam generators had to be inserted 00:14:12.63000:14:12.640 in the preheat train to get the VIS 00:14:14.85000:14:14.860 breaking rescue down to the same 00:14:16.62000:14:16.630 temperature to tack but the pre heat 00:14:20.75900:14:20.769 rain became quite much more simple 00:14:23.10000:14:23.110 compared to the original design this is 00:14:28.62000:14:28.630 a comparison in size and number of the 00:14:32.34000:14:32.350 heat exchangers so this is a picture of 00:14:34.80000:14:34.810 the spiral heat exchangers and i would 00:14:37.92000:14:37.930 say in size they have a width of around 00:14:40.17000:14:40.180 two meters and the diameter of just 00:14:43.38000:14:43.390 above two meters 2.2 meters so you can 00:14:47.73000:14:47.740 see that twat lucia tubes were replaced 00:14:50.22000:14:50.230 by two spirals for a forty percent 00:14:53.31000:14:53.320 increase in capacity and for a robber 00:14:58.34000:14:58.350 for slightly higher energy recovery 9.6 00:15:02.97000:15:02.980 megawatt and the material was upgraded 00:15:06.26900:15:06.279 so that instead of having the shelling 00:15:09.12000:15:09.130 carbon steel and the chips in stainless 00:15:11.19000:15:11.200 steel the whole heat exchangers are in 00:15:14.13000:15:14.140 stainless steel 316 titanium material 00:15:18.86000:15:18.870 these exchangers were started up in 00:15:23.04000:15:23.050 February 2012 so they have now been 00:15:25.62000:15:25.630 operating for more than four years you 00:15:28.98000:15:28.990 can split it up into 8 operating cycles 00:15:32.57900:15:32.589 which are roughly six months per cycle 00:15:34.93900:15:34.949 so as you can see compared to the SRC 00:15:38.26900:15:38.279 station is a bit shorter run life so 00:15:40.91000:15:40.920 maybe we've dwarf cattle chemicals that 00:15:43.91000:15:43.920 could also be increased to a little bit 00:15:46.10000:15:46.110 longer run length in between their 00:15:47.92900:15:47.939 shuttles the performance of these 00:15:51.88900:15:51.899 exchanges can be split into three 00:15:53.74900:15:53.759 different periods period one that is the 00:15:57.98000:15:57.990 first three operating cycles of the 00:16:00.94900:16:00.959 spiral heat exchanger lifetime it was a 00:16:03.76900:16:03.779 very very high thermal performance it 00:16:07.00900:16:07.019 was exceeding the expectations so 00:16:09.94900:16:09.959 actually the additional downstream steam 00:16:13.00900:16:13.019 generators that were inserted into the 00:16:15.23000:16:15.240 pre heat rain were not needed they were 00:16:17.90000:16:17.910 not in operation there were no issues 00:16:20.86900:16:20.879 with hydraulic performance so there was 00:16:22.69900:16:22.709 no fouling and no cleaning was really or 00:16:27.37900:16:27.389 no mechanical cleaning it was needed of 00:16:29.50900:16:29.519 these exchangers in between cycles they 00:16:33.31900:16:33.329 were only been flushed with light cycle 00:16:36.31900:16:36.329 oil so they were no opened and during 00:16:40.63900:16:40.649 this period they actually could stop use 00:16:43.46000:16:43.470 the antifouling chemicals that they used 00:16:45.94900:16:45.959 to reduce but there came a second period 00:16:51.43900:16:51.449 which was not giving us good performance 00:16:54.19900:16:54.209 and we could see it happened by the end 00:16:56.74900:16:56.759 of the first period that the pressure 00:16:59.38900:16:59.399 drop was building up very much 00:17:02.11000:17:02.120 specifically in the hot end of the two 00:17:06.02000:17:06.030 spiral heat exchangers in serious and it 00:17:09.02000:17:09.030 also created a reduced performance 00:17:10.84000:17:10.850 thermal performance in the heat 00:17:12.77000:17:12.780 exchanger so they'll even needed to do 00:17:15.94900:17:15.959 some mid-run flushing of the heat 00:17:18.91900:17:18.929 exchangers taking the heat exchangers 00:17:21.79900:17:21.809 out of operation one by one for a few 00:17:24.55900:17:24.569 hours and do a flushing you 00:17:26.91900:17:26.929 the rug and by the end it was decided 00:17:31.69000:17:31.700 that just doing a chemical cleaning by 00:17:36.10000:17:36.110 with these heat exchangers with 00:17:37.74900:17:37.759 recycling and see like cyclone is not 00:17:41.35000:17:41.360 efficient enough so we really need to 00:17:43.11900:17:43.129 open these heat exchangers and do a 00:17:45.51900:17:45.529 mechanical cleaning and when they were 00:17:48.15900:17:48.169 opened a lot of solids were found inside 00:17:52.02900:17:52.039 the heat transfer channel of this hot 00:17:55.35900:17:55.369 and spiral heat exchanger which was the 00:17:57.27900:17:57.289 first one seeing that Miss breaking 00:17:59.40900:17:59.419 residue so it was obvious that the 00:18:02.37900:18:02.389 strainers that were installed to protect 00:18:04.48000:18:04.490 the heat exchangers from solids from 00:18:06.54900:18:06.559 rocks had not been doing their job 00:18:09.48900:18:09.499 careful enough so after some hard work 00:18:14.68000:18:14.690 to clean those heat exchangers get those 00:18:17.20000:18:17.210 rocks out of them we see now again 00:18:20.25900:18:20.269 period 3 which is the last latest 00:18:23.13900:18:23.149 operating period of the spiral heat 00:18:24.85000:18:24.860 exchangers the thermal performance being 00:18:27.82000:18:27.830 back as per the first period same the 00:18:31.21000:18:31.220 hydraulic performance and so far no 00:18:34.18000:18:34.190 cleaning has been needed so looking at 00:18:37.38900:18:37.399 the operating they done what you see in 00:18:40.29900:18:40.309 these graphs here are three curves and 00:18:43.06000:18:43.070 they show period one period to and 00:18:45.90900:18:45.919 period three period one is the red color 00:18:49.25900:18:49.269 period blue is the blue superior to is 00:18:53.08000:18:53.090 the boot and period three is the green 00:18:55.45000:18:55.460 and what you can see during the period 00:18:59.23000:18:59.240 one by the end of the cycle you can see 00:19:01.96000:19:01.970 a quite high increase in pressure drop 00:19:05.13900:19:05.149 on the hot end spiral for the VIS 00:19:08.37900:19:08.389 breaking residue flow and that is when 00:19:10.60000:19:10.610 the soul it's entered into the heat 00:19:12.73000:19:12.740 transfer channel and then because the 00:19:15.27900:19:15.289 heat exchangers couldn't be properly 00:19:17.10900:19:17.119 cleaned just by chemical cleaning or lco 00:19:20.91900:19:20.929 flushing when period two started the 00:19:24.90900:19:24.919 pressure drop started already from a 00:19:26.83000:19:26.840 higher level which means the increase in 00:19:30.03900:19:30.049 pressure drop was not so high but it's 00:19:33.19000:19:33.200 thought 00:19:33.65000:19:33.660 from a higher level and they were 00:19:35.57000:19:35.580 actually hydraulically limited during a 00:19:38.06000:19:38.070 period which means the spiral needed to 00:19:40.55000:19:40.560 be bypassed and that can be seen in the 00:19:43.37000:19:43.380 next graph which is showing the thermal 00:19:46.31000:19:46.320 performance because when you bypass the 00:19:49.01000:19:49.020 spiral of course you solve the hydraulic 00:19:51.74000:19:51.750 limitation but you reduce the thermal 00:19:54.32000:19:54.330 performance so what you see here now is 00:19:57.50000:19:57.510 the Haupt approach temperature and again 00:20:00.95000:20:00.960 you have the red curve for period while 00:20:03.32000:20:03.330 and the green curve for period 23 and 00:20:06.62000:20:06.630 you will see the blue curve for period 2 00:20:09.83000:20:09.840 with a bigger temperature approach and a 00:20:13.61000:20:13.620 lower and heat recovery performance 00:20:16.67000:20:16.680 during this period where they were 00:20:19.31000:20:19.320 solids in the heat transfer channel but 00:20:22.16000:20:22.170 as you can see again now after the 00:20:24.11000:20:24.120 proper mechanical cleaning removing the 00:20:26.42000:20:26.430 solids from the spiral period 3 is now 00:20:30.71000:20:30.720 back at the same performance as when the 00:20:33.02000:20:33.030 heat exchanges were cleaned and started 00:20:34.97000:20:34.980 up from the beginning so to summarize 00:20:39.32000:20:39.330 the presentation with the case story we 00:20:44.81000:20:44.820 hope that we have shown to you that I've 00:20:47.84000:20:47.850 spiral heat exchanger technology it is 00:20:50.54000:20:50.550 possible to maximize the capacity of 00:20:54.13000:20:54.140 your existing heavy oil processes even 00:20:58.73000:20:58.740 if you have very limited space available 00:21:01.51000:21:01.520 you can minimize fouling you can run for 00:21:05.84000:21:05.850 a long run length without maintenance 00:21:08.27000:21:08.280 but probably even longer with 00:21:11.09000:21:11.100 antifouling chemicals you can maximize 00:21:14.33000:21:14.340 the energy recovery and keep it high 00:21:17.00000:21:17.010 over time because of the low fouling 00:21:19.34000:21:19.350 tendency and because of the less 00:21:21.83000:21:21.840 cleaning required and because of the 00:21:24.41000:21:24.420 possible 00:21:24.98900:21:24.999 to do cleaning without opening the heat 00:21:27.47900:21:27.489 exchangers you increase the reliability 00:21:30.46900:21:30.479 and the safety for your workers and also 00:21:35.78900:21:35.799 you can save Catholics if you are 00:21:38.06900:21:38.079 looking at the new unit maybe not the 00:21:40.31900:21:40.329 best breaker but instead of 12 shell and 00:21:43.25900:21:43.269 tube heat exchangers you can use only 00:21:45.71900:21:45.729 two spiral heat exchangers with forty 00:21:48.29900:21:48.309 percent higher capacity and that's why 00:21:51.32900:21:51.339 we see today we have more than 45 spiral 00:21:54.80900:21:54.819 exchangers in this breaking units 00:21:57.38900:21:57.399 preheat train and in total more than 00:21:59.66900:21:59.679 hundred and forty-five spiral need 00:22:01.37900:22:01.389 exchangers for heavy oil processing so 00:22:05.06900:22:05.079 thank you very much for your attention 00:22:06.44900:22:06.459 and I'm looking forward to all the 00:22:08.48900:22:08.499 questions that you will be typing into 00:22:11.06900:22:11.079 the app or asked the traditional way 00:22:14.66900:22:14.679 with microphone is what we doing both 00:22:18.23900:22:18.249 thank you very much 00:22:25.76900:22:25.779 Oh 00:22:30.62000:22:30.630 you
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