00:00:00.680 we have been talking about previous heat 00:00:03.83000:00:03.840 exchanger networks or preheating and we 00:00:07.19000:00:07.200 haven't pay attention that much into 00:00:09.08000:00:09.090 this so let's check it out 00:00:10.70000:00:10.710 now of course we know that there is a 00:00:13.31000:00:13.320 furnace which increases the temperature 00:00:15.14000:00:15.150 and sometimes we have pre flashing 00:00:17.84000:00:17.850 otherwise we can directly add these to 00:00:20.66000:00:20.670 the color what I haven't told you that 00:00:23.68900:00:23.699 much is about these hen hen 1 and hand 2 00:00:27.08000:00:27.090 there are 2 main heat exchanger networks 00:00:29.62000:00:29.630 one before the crude the Psalter 00:00:31.79000:00:31.800 remember that increasing the temperature 00:00:34.01000:00:34.020 here will improve the dissolving 00:00:36.13900:00:36.149 efficiency and one before the furnace so 00:00:41.06000:00:41.070 here actually what we're doing is 00:00:42.59000:00:42.600 preparing or trying to increase it 00:00:44.18000:00:44.190 temperature before the furnace not that 00:00:46.79000:00:46.800 much to get an advantage on the furnace 00:00:49.13000:00:49.140 but because we want to cool down all 00:00:51.59000:00:51.600 these materials HU and residual material 00:00:55.18900:00:55.199 so we need to cool down these instead of 00:00:57.50000:00:57.510 we just cooling or spending money on 00:01:00.97900:01:00.989 cooling these products and spending more 00:01:02.86900:01:02.879 money in increasing the temperature from 00:01:05.14900:01:05.159 let's say this temperature to final 00:01:07.42900:01:07.439 temperature we are doing this exchange 00:01:09.41000:01:09.420 of networks remember this is essentially 00:01:12.35000:01:12.360 just hot product plus the stream rate 00:01:16.39000:01:16.400 versus the crude oil so essentially is a 00:01:20.23000:01:20.240 product which is high in temperature 00:01:22.92900:01:22.939 those are NAFTA kerosene LG ole heavy 00:01:26.99000:01:27.000 gas oil residue versus a low temperature 00:01:30.74000:01:30.750 material which is crude oil here the 00:01:33.44000:01:33.450 subject crude oil or crude oil before 00:01:35.89000:01:35.900 the furnace so what we're doing here is 00:01:39.20000:01:39.210 essentially just a heat exchange now 00:01:44.24000:01:44.250 this is a very important operation as 00:01:45.80000:01:45.810 you can imagine and this is a little bit 00:01:49.19000:01:49.200 more let's say more detail heat 00:01:53.63000:01:53.640 exchanger Network as you can see here 00:01:55.42900:01:55.439 this is just hand box but right now we 00:01:58.16000:01:58.170 have several exchangers so what's 00:02:00.67900:02:00.689 happening here is essentially that we 00:02:02.74900:02:02.759 are going to be exchanging heat via 00:02:06.26000:02:06.270 change of temperature just one little 00:02:08.77900:02:08.789 note right here nafta is actually a 00:02:11.30000:02:11.310 partial condenser so 00:02:13.40000:02:13.410 going to be having some NAFTA as vapor 00:02:17.18000:02:17.190 and liquid but all others are without 00:02:20.72000:02:20.730 face change okay so here though the 00:02:23.90000:02:23.910 crude and it's going to be treated here 00:02:26.42000:02:26.430 first the jet fuel this is around middle 00:02:30.26000:02:30.270 distillate then this is middle 00:02:32.65000:02:32.660 distillate this is heavy desolate heavy 00:02:36.02000:02:36.030 to middle heavy heavy the actually is 00:02:40.49000:02:40.500 very heavy so this is very huge in 00:02:42.20000:02:42.210 temperature so I will say this is about 00:02:44.20000:02:44.210 150 tops then we dassault it and the 00:02:49.67000:02:49.680 second heat exchanger which will be here 00:02:53.20000:02:53.210 will be something around maybe 290 00:02:56.77000:02:56.780 something around that and then we get 00:02:59.93000:02:59.940 the crude oil to the furnace which makes 00:03:03.11000:03:03.120 the finisher gets a temperature fix to 00:03:05.75000:03:05.760 350 and then we get it to the 00:03:08.42000:03:08.430 distillation column the exchanger 00:03:11.90000:03:11.910 networks enable to increase the crude 00:03:13.76000:03:13.770 oil temperature to about to hunt up to 00:03:16.97000:03:16.980 230 depending on the operation of course 00:03:19.88000:03:19.890 and depending if you are using enough 00:03:21.98000:03:21.990 residue depending on the amount of 00:03:23.96000:03:23.970 recipe you're getting actually if you 00:03:26.15000:03:26.160 have a high flow rates of residue then 00:03:28.25000:03:28.260 you will need to increase this flow rate 00:03:29.60000:03:29.610 and you will increase the temperature 00:03:31.45000:03:31.460 automatically now of course this is very 00:03:35.06000:03:35.070 important because we have our crude oil 00:03:37.19000:03:37.200 which is around 25 Celsius and we are 00:03:40.34000:03:40.350 getting it up to 250 remember that our 00:03:44.27000:03:44.280 main goal is to achieve 350 Celsius so 00:03:48.02000:03:48.030 we are helping the furnace to achieve a 00:03:50.87000:03:50.880 higher chill or let's say more efficient 00:03:53.57000:03:53.580 yield which is of course energy which we 00:03:56.75000:03:56.760 are saving ourselves instead of buying a 00:04:00.26000:04:00.270 condenser serve a refrigeration system 00:04:02.78000:04:02.790 where or let's say instead of using 00:04:05.00000:04:05.010 water we are using the same crude oil 00:04:06.98000:04:06.990 for heat exchange okay they also cause 00:04:12.02000:04:12.030 more pollution due to the burning more 00:04:14.09000:04:14.100 okay this pretty straightforward if you 00:04:16.72900:04:16.739 don't use this heat exchange Network 00:04:18.22900:04:18.239 you're going to spend money and of 00:04:20.15000:04:20.160 course you're going to increase thermal 00:04:21.83000:04:21.840 pollution of water and that's why we'd 00:04:24.95000:04:24.960 use heat exchanger Network 00:04:26.48000:04:26.490 and of course this is very important not 00:04:29.18000:04:29.190 only for the crude oil per se but for 00:04:31.18900:04:31.199 the final products or let's say the 00:04:33.65000:04:33.660 straight run products 00:04:38.22000:04:38.230 [Music]
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