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How Steam Helps Turn Wood Pulp into Paper - Steam Culture

WEBVTT
Kind: captions
Language: en

00:00:00.030
hey guys here we have paper products
00:00:01.730 00:00:01.740 that we use before they are paper there
00:00:04.220 00:00:04.230 in this wet substance and it's wood pulp
00:00:06.590 00:00:06.600 and it's got water and it's got to get
00:00:08.059 00:00:08.069 out we're gonna use steam to do it so
00:00:09.740 00:00:09.750 stay tuned on steam culture today
00:00:17.070 00:00:17.080 well like I said this is wood pulp and
00:00:19.589 00:00:19.599 it's basically cellulose fiber suspended
00:00:22.589 00:00:22.599 in water and we have to get rid of this
00:00:24.060 00:00:24.070 water if we're gonna make paper now
00:00:25.830 00:00:25.840 we're gonna do that in the paper machine
00:00:27.240 00:00:27.250 and these things are huge they're this
00:00:29.189 00:00:29.199 size is two-lane highways the paper is
00:00:32.069 00:00:32.079 gonna move through it like highway
00:00:34.049 00:00:34.059 speeds and we're gonna go from a wet
00:00:36.180 00:00:36.190 pulp to finish roll of paper in a matter
00:00:39.180 00:00:39.190 of seconds so let's talk about how that
00:00:40.799 00:00:40.809 happens
00:00:41.460 00:00:41.470 this wet pulpy mess is gonna be sprayed
00:00:43.350 00:00:43.360 onto a very fine screen and it's gonna
00:00:45.780 00:00:45.790 go on about 99 percent moisture content
00:00:47.670 00:00:47.680 now through gravity and suction we're
00:00:50.400 00:00:50.410 gonna pull out some moisture and we're
00:00:52.110 00:00:52.120 gonna be about 80% wet then we're going
00:00:53.970 00:00:53.980 to enter the press section
00:00:55.229 00:00:55.239 now that's sheet which is now starting
00:00:58.290 00:00:58.300 to interlock and become a real sheet of
00:00:59.849 00:00:59.859 paper as the water comes off it's gonna
00:01:01.709 00:01:01.719 be gently laid onto something called a
00:01:03.240 00:01:03.250 felt the felt is gonna transport it
00:01:05.340 00:01:05.350 through a series of rolls that are gonna
00:01:06.749 00:01:06.759 press the water out onto the felt which
00:01:09.840 00:01:09.850 is gonna take the water away as we
00:01:11.820 00:01:11.830 deliver the sheet now at about 50%
00:01:14.279 00:01:14.289 moisture content to the drier section
00:01:17.040 00:01:17.050 which is where the steam comes into play
00:01:18.600 00:01:18.610 now there's these large steel cylinders
00:01:21.600 00:01:21.610 that are injected with high-pressure
00:01:23.249 00:01:23.259 steam making them extremely hot that
00:01:25.740 00:01:25.750 sheets gonna pass over and it's gonna
00:01:27.660 00:01:27.670 dry rapidly and in matter of seconds
00:01:30.210 00:01:30.220 it's gonna go from fifty percent
00:01:31.589 00:01:31.599 moisture content to five percent
00:01:33.300 00:01:33.310 moisture content which now we have a
00:01:35.279 00:01:35.289 durable sheet of paper that can be
00:01:37.169 00:01:37.179 processed for whatever they're going to
00:01:38.880 00:01:38.890 use it for these rolls by the way I'm
00:01:41.010 00:01:41.020 going to show you some images here are
00:01:42.300 00:01:42.310 enormous and pretty cool to see they
00:01:44.490 00:01:44.500 wait thirty to thirty-five tons and have
00:01:47.130 00:01:47.140 60 to 65 kilometers worth of paper on
00:01:50.400 00:01:50.410 there pretty impressive stuff so we've
00:01:52.710 00:01:52.720 closed the loop we've taken woodchips
00:01:54.779 00:01:54.789 we've made wood pulp we've burned black
00:01:57.300 00:01:57.310 liquor to make steam and we've used that
00:01:59.850 00:01:59.860 seem to turn this wood pulp into paper
00:02:02.339 00:02:02.349 so I hope you've enjoyed that whole
00:02:04.199 00:02:04.209 process I hope you'll join us next week
00:02:06.180 00:02:06.190 because I'm going to have a new episode
00:02:07.320 00:02:07.330 for you hope you find us on social media
00:02:09.600 00:02:09.610 cuz we're everywhere and I'll see you
00:02:11.520 00:02:11.530 next week join me
00:02:30.110 00:02:30.120 you

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