EXHAUST GAS CLEANING Wärtsilä Closed Loop Scrubber System The system operates in a closed loop, i.e. the wash water is being circulated within the scrubber. Exhaust gas enters the scrubber and is sprayed with fresh water that has been mixed with caustic soda (NaOH). The sulphur oxides in the exhaust react with this mixture and are thereby neutralised. A small bleed-off is extracted from the closed loop and treated to fulfil requirements stipulated by the IMO. Cleaned effluents can be safely discharged overboard with no harm to the environment. If operation in zero discharge mode is requested, the effluent can be led to a holding tank for scheduled and periodical discharge. ØD Øout
E Øin
U H
C
B
ØP
Wärtsilä closed loop scrubber system Scrubber Capacity ØD type (kg/s) (mm)
WM 92 WM 98 WM 104 WM 111 WM 118 WM 125 WM 133 WM 141 WM 149 WM 158 WM 167 WM 177 WM 187 WM 198 WM 209 WM 221 WM 233 WM 246 WM 259 WM 273 WM 287 WM 302 WM 317 WM 333 WM 350 WM 367 WM 385 WM 403 WM 422 WM 442 WM 462 WM 483 WM 505 WM 527 WM 550 WM 574 WM 599 WM 624 WM 650 WM 677 WM 705 WM 733 WM 762 WM 792 WM 822 WM 853 WM 885 WM 918 WM 951 WM 985
1.46 1.66 1.88 2.14 2.43 2.73 3.10 3.49 3.90 4.40 4.93 5.55 6.20 6.97 7.78 8.72 9.72 10.85 12.06 13.42 14.87 16.50 18.21 20.14 22.30 24.57 27.09 29.75 32.69 35.93 39.34 43.09 47.20 51.51 56.22 61.36 66.96 72.81 79.17 86.06 93.51 101.29 109.69 118.74 128.16 138.29 149.16 160.82 172.93 185.89
920 980 1 040 1 110 1 180 1 250 1 330 1 410 1 490 1 580 1 670 1 770 1 870 1 980 2 090 2 210 2 330 2 460 2 590 2 730 2 870 3 020 3 170 3 330 3 500 3 670 3 850 4 030 4 220 4 420 4 620 4 830 5 050 5 270 5 500 5 740 5 990 6 240 6 500 6 770 7 050 7 330 7 620 7 920 8 220 8 530 8 850 9 180 9 510 9 850
ØP (mm)
Øin (mm)
Øout (mm)
H (mm)
C (mm)
B (mm)
E (mm)
Weight dry (kg)
Weight wet (kg)
378 402 427 456 484 513 546 579 611 648 685 726 767 812 857 907 956 1 009 1 062 1 120 1 177 1 239 1 300 1 366 1 435 1 505 1 579 1 653 1 731 1 813 1 895 1 981 2 071 2 161 2 255 2 354 2 456 2 559 2 665 2 776 2 891 3 006 3 125 3 248 3 371 3 498 3 629 3 764 3 900 4 036
365 385 410 440 465 495 525 560 590 625 660 700 740 785 830 875 925 975 1025 1080 1140 1195 1255 1320 1385 1 450 1600 1595 1675 1750 1830 1910 2010 2085 2175 2275 2370 2470 2575 2680 2790 2900 3015 3135 3255 3375 3500 3635 3765 3900
385 400 430 460 485 520 550 585 620 655 700 735 775 820 870 915 970 1 020 1 070 1 135 1 190 1 255 1 315 1 380 1 455 1 525 1 525 1 670 1 755 1 835 1 920 2 005 2 100 2 190 2 285 2 385 2 490 2 590 2 700 2 810 2 930 3 045 3 165 3 290 3 415 3 540 3 675 3 810 3 950 4 090
4 400 4 500 4 600 4 700 4 800 4 900 5 000 5 100 5 200 5 300 5 400 5 500 5 700 5 900 6 000 6 200 6 400 6 500 6 700 6 900 7 100 7 300 7 500 7 700 7 900 8 200 8 400 8 700 8 900 9 200 9 500 9 700 10 000 10 300 10 600 11 000 11 300 11 600 12 000 12 400 12 700 13 100 13 500 13 900 14 300 14 800 15 200 15 600 16 100 16 500
3 113 3 133 3 159 3 190 3 215 3 246 3 276 3 312 3 343 3 378 3 414 3 455 3 496 3 542 3 588 3 633 3 684 3 735 3 786 3 843 3 904 3 960 4 021 4 088 4 154 4 220 4 297 4 368 4 450 4 526 4 608 4 690 4 792 4 868 4 960 5 062 5 159 5 261 5 368 5 475 5 588 5 700 5 817 5 940 6 062 6 185 6 312 6 450 6 583 6 720
459 483 506 533 561 588 619 650 682 717 752 791 830 873 916 962 1 009 1 060 1 111 1 165 1 220 1 278 1 337 1 399 1 465 1 532 1 602 1 672 1 746 1 824 1 902 1 984 2 070 2 156 2 245 2 339 2 437 2 534 2 635 2 741 2 850 2 959 3 072 3 189 3 306 3 427 3 552 3 681 3 809 3 942
765 785 810 840 865 895 925 960 990 1 025 1 060 1 100 1 140 1 185 1 230 1 275 1 325 1 375 1 425 1 480 1 540 1 595 1 655 1 720 1 785 1 850 1 925 1 995 2 075 2 150 2 230 2 310 2 410 2 485 2 575 2 675 2 770 2 870 2 975 3 080 3 190 3 300 3 415 3 535 3 655 3 775 3 900 4 035 4 165 4 300
1 100 1 200 1 300 1 400 1 500 1 600 1 800 1 900 2 000 2 200 2 400 2 600 2 800 3 100 3 400 3 700 4 000 4 300 4 700 5 100 5 500 6 000 6 500 7 100 7 700 8 300 9 000 9 800 10 600 11 500 12 400 13 400 14 500 15 700 16 900 18 300 19 700 21 200 22 900 24 600 26 500 28 500 30 600 32 900 35 200 37 800 40 400 43 300 46 300 49 400
1 300 1 400 1 500 1 600 1 800 1 900 2 000 2 300 2 400 2 600 2 800 3 100 3 400 3 700 4 100 4 500 4 900 5 300 5 800 6 300 6 900 7 500 8 200 8 900 9 700 10 600 11 500 12 500 13 500 14 700 15 900 17 300 18 700 20 200 21 900 23 700 25 600 27 700 29 800 32 200 34 700 37 400 40 200 43 200 46 400 49 800 53 400 57 200 61 200 65 400