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雲林縣環境保護局 生煤燃燒技術與成本效益評估 梁正中 教授 逢甲大學環境工程與科學系 PowerPoint PPT Presentation


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雲林縣環境保護局 生煤燃燒技術與成本效益評估 梁正中 教授 逢甲大學環境工程與科學系. 大 綱 一、環保署「中小型燃煤鍋爐許可審查核管理機制」 二、生煤成分與燃燒 煤形成 、成分、 來源 煤燃燒描述 三、生煤熱值與燃燒技術 四、成本效率評估 五、 燃煤 與 空氣污染:機制與控制技術. 一、中小型燃煤鍋爐許可審查核管理機制 近年因燃油價格高漲,全國工廠鍋爐製程陸續將其使用之燃油鍋爐改為燃煤鍋爐,減少營運成本,確造成空氣污染物排放量明顯增加之情形,嚴重影響區域空氣品質。

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雲林縣環境保護局 生煤燃燒技術與成本效益評估 梁正中 教授 逢甲大學環境工程與科學系

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0.6~1.5%2~15%0.5%0.1%


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  • 101


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197100 2


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20082


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2~17


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1013SCCs50%


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1.


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  • 1200


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  • C=78%H=6.7%O=1.9%N=1.1%S=1.9%110%(a). (A/F)(b).

    []100 g


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  • 11012


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2.

()

CO2, H2O,

d=30-70m

()

CO2, H2O,

t=1-2sec

t=1-5ms

t=50-100ms

t


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mechanical stoker,chain gratespreader stoker

pulverized coal

1040


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  • /

  • //

  • /


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C+ H2O H2+CO

2H2+O22H2O

2CO+O2 2CO2


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  • 70%29%1%


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Qin = Fuel NHV

b=Steam(HsteamHwater)/Qin


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1.85~90%

2.88~95%()

3.65~95%()

=


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1-1.3,0004,000/

1-2.65~95% ()

1-3. 45006400 kcal/kg

2-1.19,00020,000/

2-2.85~90%

2-3. 92009400 kcal/m3

3.110 kg/cm2179.04C 662.9 kcal/kg

3.27 kg/cm2164.17C 659.49 kcal/kg


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1.3,500/19,500/

2.70% 85%

3. 5000 kcal/kg 9300 kcal/m3

7 kg/cm2164.17C 659.49 kcal/kg

1.5%0.5%32 g/moleSO264 g/mole


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SO2

  • 2.3(PM)NOx1.5

  • ()


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  • (CO2)

  • (CO)

  • (NOx)

  • (SOx)

  • (PM)

  • (Me)

  • (HC)


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  • (CO2)

  • C + O2 CO2

  • 99C

  • CO2(37%)(60%)


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  • (CO)

  • C + O2 CO

  • /


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  • (PM)

  • PM

PM


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PM (AP-42, EPA)


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(Me)

1

2

3

???


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  • POHC

  • /


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  • (<10%)

  • (40%)

  • (60%)

  • FeS2 - //


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SOx

-SO4

O2, M

radicals

Coal-S

(CS, S2, S, SH)

SO

SO2

SO3

char

SO2 molecule

H2S

COS, CS2


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  • SOx

  • (30-50%)

  • (90%)

  • (IGCC)

  • (FGD)(80-98%)

  • (DSI)(50%)


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(1-2%)

12-5


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  • 1.

  • (/)

  • 2.


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CO2, H2O, NO

CHi

CO2, H2O, NO

CO2, H2O, N2

CHi + NO HCN

HCN + NO N2 +


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CO, CO2, H2O, N2

O2

CO, CO2, H2O, N2

CO2, H2O, N2


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NOx(from AP-42, EPA)

Overfire air


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2.471.5/


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.Q & A


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