O 2 CO 2 MakeUp Water Steam Deaerator
- Slides: 43
O 2 CO 2 Make-Up Water Steam Deaerator Chemical Flash Steam M Feed Water Tank P Boiler Blow Down Condensate Tank Condensate Water Process
Radiation Heat Feed Water Air Fuel Boiler Blow Down Steam Waste Gas
Steam Feed Water (FW) t 1 t 2 (G) 1000 – x lit Blow Down (B/D) t 3 x lit (L)
จากรปท 3 คา Variable Factor 1. อณหภมของ FW . 2 Steam Pressure Steam Temp. , B/D temp. FW . 3 Cycle of Concentration (N) คณภาพนำ Boiler และ . 4 Specific. Heat ของเชอเพลง. 5 Data Correction ปรมาณ FW, ปรมาณเชอเพลง Boiler Stop ,
• Burner Type Nozzle, Atomizer Cap (Rotary) • Efficiency กำหนด Bench Mark ท Nozzle Rotary 80% สำหรบหวฉด 85% สำหรบหวฉด • Specific Heat ของนำมนเตา
Specific gravity at 15. 6/15. 6 OC Gross Heat of Combustion kcal/kg Gross Heat of Combustion kcal/l Fuel Oil No. 1 No. 2 No. 3* No. 4 No. 5 Remark 0. 985 0. 990 0. 995 0. 996 Not more than 10, 000 9, 900 Not less than 9, 850 9, 801 9, 850 9, 860 Not less than
ขอม ล Boiler 16 ตน /ชม. หวเผาแบบ nozzle ใชนำมนเตา เปนเชอเพลง Feed temp. ~60 OC Operate ท C ~5 kg/cm 2 เปด Steam Table Absolute pressure = 6 kg/cm 2 , อณหภม วนท µS/cm 25 พ. ย. 46 = 158. 08 OC FW = 137 m 3 คา EC = 2, 150 Fuel = 9, 390 lit
การคำนวณ C. O. C (N) จาก B/D = 11, 860 = 5. 5 2, 150 = FW / N คด % B/D = 100 / 5. 5 = 18. 13% B/D = 181. 3 lit/m 3 of FW Steam = 1, 000 – 181. 3 = 818. 7 lit/m 3 of FW
จากการเปด Steam Table จะได • Enthalpy of 6 kg/cm 2 Saturated water… HBW = 159. 25 kcal/kg • Enthalpy of 6 kg/cm 2 Saturated steam… HS = 658. 1 kcal/kg • Enthalpy of 60 OC Feed water…………. . . Hf = 59. 94 kcal/kg • Gross heat of combustion of fuel oil……. . Ff = 9, 850 kcal/lit Total heat = (658. 1 x 818. 7) + (159. 25 x 181. 3) – (59. 94 x 1, 000) = 507, 718. 5 kcal/ton of FW …………. theoretical หมายเหต - Operate 5 kg/cm 2 - Absolute pressure 6 kg/cm 2
คำนวณ Boiler โดยกำหนดให Boiler มประสทธภาพ 80% Total heat require = 507, 718. 5 0. 80 = 634, 648 kcal/ton of FW Fuel rate = 634, 648 = 64. 48 lit/ton of FW 9, 850 = 64. 43 = 78. 7 lit/ton of steam 1 - 0. 1813
จากขอมลของโรงงานวนท 2546 Fuel rate 25 พ. ย. = 9, 390 = 68. 54 lit/ton of FW 137 = 68. 50 = 83. 72 lit/ton of steam 1 - 0. 1813 Eff. = 507, 718. 5 x 100 = 75. 2% 9, 850 x 68. 5 ได Steam = (137 x 0. 8187) = 112. 16 ton/D
C. O. C (N) = 5, 000 = 2. 3 2, 150 ตอง B/D= 43% 430 =lit/m 3 of FW ได Steam = 1, 000 – 430 570 =lit/m 3 of FW Total heat = (658. 1 x 159. 25) + (570 x 430) – (59. 94 x 1, 0 383, 654. 5 =kcal/ton of FW
กำหนด Boiler Eff. 80% Total heat require = 568, 479 kcal/ton of FW Fuel rate = 48. 69 lit/ton of FW 85. 4 =48. 69 = lit/ton of steam 430. - 1 ถาตองการ ใชนำมน Steam เทาเดม 9, 580 lit ใชนำมนเพมขน lit/D 112. 16 ton 9, 580 – 9, 290 = 190
ถา Boiler Eff. เทาเดม = 75. 2% (ยงไมลาง Boiler( Total heat require = 179, 510 kcal/ton of FW Fuel rate = 51. 79 lit/ton of FW 90. 9 =51. 79 = lit/ton of steam 430. - 1 ถาตองการ ใชนำมน Steam เทาเดม 10, 192 lit ใชนำมนเพมขน 112. 16 ton = 802 lit/D
Total heat = (658. 1 x 159. 25) + (941. 8 x 58. 2) – (59. 94 x 1, 0 569, 127 =kcal/ton of FW ใช Boiler Eff. เทาเดม = 75. 2% (ยงไมลาง Boiler( Total heat require = 756, 818 kcal/ton of FW Fuel rate = 76. 8 lit/ton of FW 81. 6 =76. 8 05820. - 1 = lit/ton of steam
ถาลาง Boiler และควบคมใหไดตาม ให Boiler Eff Boiler Standard = 80% Total heat require = 711, 409 kcal Fuel rate = 72. 2 lit/ton of FW 76. 69 =72. 2 = lit/ton of steam 05820. - 1 Steam 112. 16 ใชนำมน = 8, 601 lit ประหยดนำมนได หกคานำประปาทเพมขน = 789 lit/D
Ø ดโครงสรางและวสดของ Boiler Ø ด Operating Condition เชน Boiler 7 ton/h แต Operate ท 1 – 3 ton/h
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