Pusan National University Contents 1 2 3 Green
- Slides: 154
Pusan National University Contents 1 후드 & 덕트 설계 2 집진 장치 설계 - 원심력 집진기 - 여과 집진기 - 전기 집진기 3 소각로 설계 Green house gases Reduction & Waste Pyrolysis Lab.
1. 후드 & 덕트 설계 (7) 배기팬 용량 결정 1) fan 정압, fan 전압 PR 1~ 12 = (PR 1+PR 2+…PR 8)+(PR 9+PR 10+…PR 12) (흡 입 측) + (배 기 측) = (6. 6+4. 4+7. 3+5. 5+7. 3+2. 2+50+2. 2)+(7. 0+1. 5+3. 5+5. 9) = 85. 5+11. 6 = 97. 1㎜H 2 O Fan 정압 PSf=97. 1㎜H 2 O를 사용해서 fan 전압을 구하면 PTf = PSf+PV 9 = 97. 1+5. 4 = 102. 5㎜H 2 O Green house gases Reduction & Waste Pyrolysis Lab.
2. 1. 집진장치 후드 & 덕트 설계설계 – 원심력 집진기 • 설계 순서 2 3 1 4 5 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡착장치 후드 & 덕트 설계설계 설계 조건 - 유입가스 특성 : 유량 5500 acfm, 1 atm, 95 ℉, 1880 ppm-n pentane (n-C 5) (n-pentane의 분압, P) (n-pentane 의 증기압, Pv) (1 atm = 14. 7 psi) (아래 그림으로부터) (비 몰부피, V’) (n-pentane 분자량, 밀도 이용) Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡착장치 후드 & 덕트 설계설계 (3) 활성탄 교체주기 산정 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡착장치 후드 & 덕트 설계설계 공기의 특성 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 <표 3 -20> 정수 α, β, γ, φ, η 의 값 HG추산식(식VII-4)의 정수 호칭치수 [in] 3/8 1 α β HL추산식(식VII-5)의 정수 적용범위 γ φ G L 2. 32 0. 45 0. 47 1, 000~2, 500~7, 500 7. 0 0. 39 0. 58 1, 000~4, 000 2, 000~2, 500 6. 41 0. 32 0. 51 1, 000~3, 000 2, 500~22, 500 17. 30 0. 38 0. 66 1, 000~3, 500 2, 500~7, 500 2. 58 0. 38 0. 40 1, 000~3, 500 7, 500~22, 500 η 적용범위 L 0. 00182 0. 46 0. 0100 0. 22 0. 0111 0. 22 raschig rings 1 1/2 2, 000~ 2 3. 82 0. 41 0. 45 1, 000~4, 000 2, 500~22, 500 32. 40 0. 30 0. 74 1, 000~3, 500 2, 500~7, 500 0. 81 0. 30 0. 24 1, 000~3, 500 7, 500~22, 500 1 1. 97 0. 36 0. 40 1, 000~4, 000 1 1/2 5. 05 0. 32 0. 45 1, 000~5, 000 1/2 0. 0125 0. 28 0. 00666 0. 28 2, 000~22, 500 0. 00588 0. 28 2, 000~22, 500 0. 00625 0. 28 75, 000 berl saddles 주 1) pall ring에 대해서는 raschig ring에 준하여 사용한다. 주 2) α, φ값은 미터단위일 경우 0. 3048을 곱하여 준 값을 사용한다. Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 <표 3 -21> 확산계수와 슈미트수(25℃와 1기압의 대기에서) substance D, ㎠/Sec ammonia 0. 236 0. 66 cabon dioxide 0. 164 0. 94 hydrogen 0. 410 0. 22 oxygen 0. 206 0. 75 water 0. 256 0. 60 cabon disulfide 0. 107 1. 45 methanol 0. 159 0. 97 benzene 0. 088 1. 76 toluene 0. 084 1. 84 xylene 0. 071 2. 18 hydrogen chloride 0. 178 0. 875 hydrogen fluoride 0. 219 0. 711 hydrogen sulfide 0. 092 1. 693 hydrogen chromiam 0. 091 1. 712 nitrogen dioxide 0. 120 1. 298 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 <표 3 -22> 확산계수와 슈미트 수(20℃의 액체에서) Solute O 2 1. 80 558 CO 2 1. 77 559 N 2 O 1. 51 665 NH 3 1. 76 570 CI 2 1. 22 824 Br 2 1. 20 840 H 2 5. 13 196 N 2 1. 64 613 HCI 2. 64 381 H 2 S 1. 41 712 H 2 SO 4 1. 73 580 HNO 3 2. 60 390 acetic acid 0. 88 1, 140 methanol 1. 28 785 sodium chloride 1. 35 745 sodium hydroxide 1. 51 665 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 <표 3 -25> 물의 점도(centipoise, 0℃~100℃) ℃ η(CP) 0 1. 787 26 0. 8705 52 0. 5290 78 0. 3638 1 1. 728 27 0. 8513 53 0. 5204 79 0. 3592 2 1. 671 28 0. 8327 54 0. 5121 80 0. 3547 3 1. 618 29 0. 8148 55 0. 5040 81 0. 3503 4 1. 567 30 0. 7975 56 0. 4961 82 0. 3460 5 1. 519 31 0. 7808 57 0. 4884 83 0. 3418 6 1. 472 32 0. 7647 58 0. 4809 84 0. 3377 7 1. 428 33 0. 7491 59 0. 4736 85 0. 3337 8 1. 380 34 0. 7340 60 0. 4665 86 0. 3297 9 1. 346 35 0. 7194 61 0. 4596 87 0. 3259 10 1. 307 36 0. 7052 62 0. 4528 88 0. 3221 11 1. 271 37 0. 6915 63 0. 4462 89 0. 3184 12 1. 235 38 0. 6783 64 0. 4398 90 0. 3147 13 1. 202 39 0. 6654 65 0. 4335 91 0. 3111 14 1. 169 40 0. 6529 66 0. 4273 92 0. 3076 15 1. 139 41 0. 6408 67 0. 4213 93 0. 3042 16 1. 109 42 0. 6291 68 0. 4155 94 0. 3008 17 1. 081 43 0. 6178 69 0. 4098 95 0. 2975 18 1. 053 44 0. 6067 70 0. 4042 96 0. 2942 19 1. 057 45 0. 5960 71 0. 3987 97 0. 2911 20 1. 002 46 0. 5856 72 0. 3934 98 0. 2879 21 0. 9776 47 0. 5755 73 0. 3882 99 0. 2848 22 0. 9548 48 0. 5656 74 0. 3831 100 0. 2818 23 0. 9325 49 0. 5561 75 0. 3781 24 0. 9111 50 0. 5468 76 0. 3732 25 0. 8904 51 0. 5378 77 0. 3684 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 <표 3 -23> 충전물에 대한 실험정수 α, β 충전물 호칭치수 (in) 1 α× β× 3. 46 1. 42 충전물 호칭치수 α× β× 1 1. 73 0. 967 3/2 0. 864 0. 740 1 1. 34 0. 910 (in) 베를새들 raschig ring (ceramic) (자 제) 3/2 1. 30 1. 31 2 1. 21 0. 967 인터록스새들 (ceramic) 1 1. 81 1. 19 3/2 0. 605 0. 740 3/2 1. 25 1. 14 1 0. 648 0. 853 3/2 0. 346 0. 910 2 0. 259 0. 683 raschig ring (금속제) pall ring (금속제) 2 0. 994 0. 786 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 Green house gases Reduction & Waste Pyrolysis Lab.
3. 1. 흡수장치 후드 & 덕트 설계설계 <표 3 -28> 충전물의 특성 충전물 재질 자기재 raschig ring¹ Carbon raschig ring¹ 금속 (탄소강) 자기재 lessig ring¹ 금속 (탄소강) 크기(공청) Dp [in] 1/4 3/8 1/2 3/4 1 1 1/2 2 3 1/4 1/2 3/4 1 1/2 2 3 1 1 1/2 2 1/4 3/8 1/2 3/4 1 1 1/2 2 두께 [in] 충전개수 [개/㎥] 1/32 1/16 3/32 1/8 1/4 3/8 1/16 1/8 1/4 5/16 1/32 1/16 1/16 1/8 1/4 3/8 1/32 2/32 1/32 1/16 3, 110, 000 848, 000 371, 000 111, 000 47, 700 13, 200 5, 720 1, 700 3, 000 374, 000 111, 000 46, 800 13, 800 5, 860 1, 730 3, 110, 000 417, 000 388, 000 120, 000 113, 000 50, 900 47, 500 14, 800 6, 360 1, 870 45, 900 12, 400 5, 300 2, 890, 000 887, 000 387, 000 112, 000 44, 200 13, 800 5, 900 충전밀도 [kg/㎥] 737 817 801 705 641 673 593 641 737 433 545 433 529 2, 400 1, 230 2, 110 881 1, 600 641 1, 170 801 609 401 801 929 785 3, 120 830 1, 600 1, 140 1, 520 1, 040 785 표면적비 at [㎡/㎥] 787 440 400 262 190 115 91. 9 62. 3 696 374 246 187 123 93. 5 62. 3 774 420 387 274 236 206 186 135 103 67. 6 226 131 105 1, 010 712 546 356 242 176 134 공간율 εd [%] packing factor [1/m] 73 68 64 73 73 68 74 74 55 74 67 74 78 69 84 73 88 78 92 85 90 92 95 66 60 68 60 76 81 85 80 87 90 Green house gases Reduction & Waste Pyrolysis Lab. 1, 620 1, 780 521 356 152 9, 080 1, 220 1, 100 55 302 183 985 110 606 755 377 472 187 105
3. 1. 흡수장치 후드 & 덕트 설계설계 <표 3 -28> 충전물의 특성 충전물 재질 크기(공청) Dp [in] 두께 [in] 충전개수 [개/㎥] 충전밀도 [kg/㎥] 표면적비 at [㎡/㎥] 공간율 εd [%] packing factor [1/m] 2 3 1/4 3/8 5, 790 1, 730 609 641 95. 1 65. 6 74 74 금속 (탄소강) 5/8 1 1 1/2 2 0. 4㎜ 0. 8㎜ 1. 6㎜ 234, 000 50, 900 13, 300 6, 360 465 513 376 352 361 207 129 102 90. 2 93. 8 95. 3 96. 4 283 147 79 59 Polypro pylene 5/8 1 1 1/2 2 234, 000 50, 900 13, 300 6, 360 72. 1 67. 3 361 207 128 102 88 90 90. 5 91 318 170 105 82 자기재 1/4 1/2 3/4 1 1 1/2 2 3, 990, 000 572, 000 177, 000 77, 700 20, 500 8, 830 897 865 769 721 609 641 899 466 269 249 144 105 60 63 66 69 75 72 1, 250 557 361 213 148 saddle intalox¹ 자기재 1/4 1/2 3/4 1 1 1/2 2 4, 150, 000 731, 000 230, 000 84, 200 25, 000 9, 360 672 545 561 545 481 529 684 623 335 256 195 118 75 78 77 77. 5 81 79 telleret² Polypro pylene S형 L형 32, 500 3, 900 110 90 185 102 88 89 자기재 pall ring² berl saddle¹ Green house gases Reduction & Waste Pyrolysis Lab. 1, 970 870 322 170 115
4. 7 대기오염물질 농도 산정 6) 배기가스 중 Thermal NOx 농도 : * Zeldovich 메카니즘 N 2 + O ↔ NO + N N + O 2 ↔ NO + O N + OH ↔ NO + H 연료 희박 연소조건(lean fuel-air)을 가정하면 [O] >> [OH] N 2 + O 2 ↔ 2 NO 총괄 반응식 NO + 1/2 O 2 ↔ NO 2 산소와의 추가 반응 * NO, NO 2 평형농도 * NO, NO 2 생성에 관한 평형상수 [NO] = (KNO[N 2][O 2])1/2 KNO = 20. 3 × exp(-21, 650/T) [NO 2] = KNO 2[NO][O 2]1/2 KNO 2 = (1. 09 × 10 -4) × exp(-21, 650/T) Green house gases Reduction & Waste Pyrolysis Lab.
5. 5 연소 공기량 및 가스량 산정 (대기배출허용기준) Green house gases Reduction & Waste Pyrolysis Lab.
감 사 합 니 다. Green house gases Reduction & Waste Pyrolysis Lab.
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