Maesod boiler training

34
BOILER BOILER Mae Sod Clean Energy Co., Ltd. Mae Sod Clean Energy Co., Ltd. IJT IJT IJT IJT

Transcript of Maesod boiler training

Page 1: Maesod boiler training

BOILERBOILERMae Sod Clean Energy Co., Ltd.Mae Sod Clean Energy Co., Ltd.

IJTIJTIJTIJT

Page 2: Maesod boiler training

Start

Normal stateB4

B9

B6

B7 B8

BOILER

MILL

B1

B3

B2

B5

Belt sizeB1 ���� 1000 mm.BW.x33.5 M.L. 11 kw

B2 ����1000 mm.BW.x14.7 M.L. 7.5 kw

B3 ���� 1000 mm.BW.x214 M.L. 30 kw

B4 ���� 1000 mm.BW.x14.7 M.L. 7.5 kw

B5 ���� 1200 mm.BW.x43 M.L. 22 kw

B6 ���� 900 mm.BW.x38 M.L. 11 kw

B7 ���� 900 mm.Bw.x73 M.L. 15 kw

B8 ���� 1500 mm.BW.x9 M.L. 5.5 kw

B9 ���� 900 mm.BW.x89 M.L. 11 kw

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INTER LOCK

BELT CONVEYOR NO.START Normal state

FORM RUNING NO. FORM RUNING NO.

B.1 OFF ▬ ON 9

B.2 ON 2 ON 2

B.3 ON 1 ON 1B.3 ON 1 ON 1

B.4 ON 4 ON 4

B.5 ON 3 ON 3

B.6 ON 5 OFF ▬

B.7 ON 6 OFF ▬

B.8 ON 7 OFF ▬

B.9 ON 8 ON 8

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FURNACE

DRUM

Steam BoilerCap. : 95 TPHPres. : 60 BarTemp. : 500°CF.W.P. : 160°C

Bag. feed : 4 set

Bag. Ext. : 13000kg/hr

STOKER

ก������ �� �����,��,�ก������������ IJT Boiler

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Boiler �������������� ���!�� �" 2 $%�&

�'������� ������� "����&(����! ��� )��&(����!!��!�*��"$!!���)���*+!�!���

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(,�� Boiler �-$ �"(�*,���%ก�*+! 4 �%(!)�/%0 &

Air & Gas system

Water & Steam systemWater & Steam system

Fuel Handling system

Ash Handling system

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superheat

economizer

200 �C

economizer160 �C800 �C

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COMBUSTION AIR SYSTEM

ก���'����� & *1�ก���$� ��&�����(%��� �����ก�� Oxygen

�� " �",�)���ก�-ก���'����� ,�2����%(!*��ก� �� 4 $%�&

Oxygen , Fuel , Fuel ,

Heat(&(����!)��� Chemical reaction(*1�ก���$��&��)

�� ")-ก42�� �"�� �� 4 $%�-�ก�%�( ก���'�����,����"�2�!��������� �",�-���!�!2%�*�-�������"�!5"��")-��-��$�*ก���'�����ก4,��$6-�

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�� ����� & ��� �"�'������-����)��'��2����!&(���� ����� & ��� �"�'������-����)��'��2����!&(����!�-$ก���'����� )! �"!�� �� ����� �")��)!ก���'�����& ��!�-$ก���'����� )! �"!�� �� ����� �")��)!ก���'�����& ก�ก�$ก�ก�$

Bagasse analysisBagasse analysis

Hydrogen : Hydrogen : 33..04 04 %%Carbon : Carbon : 2323..24 24 %%Oxygen : Oxygen : 2222..08 08 %%Moisture :Moisture : 5050..0 0 %%HHV : HHV : 22722272Kcal / Kg Kcal / Kg

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�� ")��ก���'�����!��!,����7�89

Turbulence �� "'���� �����ก���ก�:$%� �"(�5 ���

Time ��$��(��)!ก���'�����

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)!��(!�ก�� �",��'����� �� �����ก�ก�$ 2�'��ก��ก;��,! $%� �"(�5 �� "�'��������(ก4)��&(����!ก�� 6ก0&9*��ก�)!�� �����,�'��ก���ก;��,! �2%,������$ 3 &9*��ก�� %�!��! �"�'����� &

Carbon Hydrogen Sulphur

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Carbon ��*���$�!9)!ก���'�������ก �"�6- *����8��ก �"�6-����'������-�%�$ Sulphur ,���*=/����ก �"�6- �����ก%)���ก�-����> �2%ก�ก�$���*�9�;4!29

� sulphur !�$��กOxygen �"��$7%)!�� ����� ��%���$� �" ��)��ก%*���$�!9)-0�-�Nitrogen ;5"�-$*ก2����(��%2�-�� �2%,��������(�ก��&9*��ก� "!)!���(%�ก���'����� �ก�-�*+!����>�5�!���-����2�&(�&6�

Ash �*+!&��;5")��?���$���4 ��%2�-�� ��)���ก�-*=/�� ���$*��ก�� - �*+!�%(!*��ก���� ����� �"2��7/�*�-$�*�%�*���$�!9 - �*+!����26)���ก�-ก��ก�-ก�%! (Corrosion) - ก���5กก�%!(Erosion) ;5"������!���*�7%ก���2ก��ก ���$��$ - ���*��ก���6- ��$ *=/�� �",�2�ก��,�- Ash

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%���%�!���(�ก�!���$ก(%� WaterWalls

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&%�&(�&6���2�A�!&68B��!���)!����!��� 8 &(��-�!�!���2%�ก�!

Boiler water Quality Recommendation At Increasing Pressure ( All value,except ; given in ppm ) in Sugar Industry

Intermediate

Low to 250 psi 250 -300 psi 300 - 450 psi

0 - 15 kg/cm2 15 - 20 kg/cm2 2 0 - 30 kg/cm2

Total hardness, as Ca CO3 0 0 0

Total Alkalinty, as Ca CO3 700 700 700

Hydroxide, as Ca CO3 150 - 300 150 - 300 130

Silica, as SiO2 100 - 133 50 - 67 50 - 67

Dissolved Oxygen 0.015 0.015 0.015

Total Dissolved Solid < 2,500 < 2,000 < 1,500

Nil

2.5

100

IJT 60kg/cm2

Total Dissolved Solid < 2,500 < 2,000 < 1,500

Suspended Solid < 600 < 300 < 200

Conductivity, micro - mho / cm < 3,500 < 2,850 < 2,150

PH 11 - 11.8 11 - 11.5 10.5 - 11.5

Oil 1.0 1.0 1.0

Sodium Sulphite ; as Na2 SO3 30 - 60 30 - 40 20 - 30

Phosphate ; as PO43- 20 - 40 20 - 40 5. - 15

Hydrazine ; as N2 H4 0.1 - 0.3 0.1 - 0.4 0.1 - 0.5

,�ก�!�� ก��*���$�-����!&(����!

*C 2531 � �" 5 �� "ก��*����B��!���

���!�ก�!����!��%��2�

100

200

9.5-10.5

20

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RAW WATER

FILTERING

FILTERED WATER

SOFTENING RODEMINERALIZATION

THERMALDEAERATION

MAKE - UP WATER

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CONDENSATEPOLISHING

ADDITTIVEINJECTION

THERMALDEAERATION

FEED WATER

BOILERWATER STEAM

CONDENSATE

BLOW - DOWN

160°C

IJT

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ก����6!�(�$! (Circulation) )! boiler �*+!��",���*+!-�($��26'� 2 *��ก�� *��ก����ก& ก��2���2��$�*����8!��� �" supply )���-�)!ก���*��"$!!���!��! )��ก��$�*+!�!��� *��ก�� �"�& !���!��!,�2�����&(����!� boiler furnace ก�* ,�ก waterwalls ���ก������!����-��� �7ก2�-ก�* %!���ก4,� ����2ก)! �"�6-

Water Flow Path

%!���ก4,� overheat ����2ก)! �"�6-

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&(����! �"�-�,�กก���'����� ,��7ก�%�$� �*)��ก�� steam ���!��� �-$'%�! % �"*��ก��*+!'!��2� %'!��2� ��-�($ carbon steel !68�B7���7�6-�-�*����8 482 °c 68�B7��� steam/water mixture B�$)! %,�$7% �"*����8 260 °c 68�B7��� superheater steam B�$)! %,���68�B7��*����8 500 °c �8� �" 260 °c 68�B7��� superheater steam B�$)! %,���68�B7��*����8 500 °c �8� �" gas !ก %�,�7�5 >1,000 °c �! ������ superheater ,� !�-�*����8 600 °c �-$�� !������ steam flow $7%)! %�*+!2�(��ก>�68�B7����%)���ก�!����2(Limit) �"��! !�-�

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�8� ��ก�� Start-up )��%0 *����8 Steam Flow ,�กก���*J- vent ��� drain

superheat ,�$���!�$��ก �� "!��� �"��$7%)! % superheat ��-�* 68�B7��,����"��5�! �! ��-$,��7� %�ก��68�B7��� superheater steam ,52�*����2��� firing &(�&6���%)�� furnace gas temp. �ก�! 537°c c c c ก%! �"ก���!,����"���� load ����� steam

flow '%�! % superheater ��ก� �� ")�� superheater metal temperature 2"��ก(%�&%��7�6- �"���� !�-� (*����8 600°c ) ก(%�&%��7�6- �"���� !�-� (*����8 600°c ) ��� firing rate �� �2��ก��*�!�� �������4(�* ,� ��)�� superheater metal

temperature �7�ก�!&%� �"���� !�-� �����&(����! �"���"��5�! ��4(ก(%�&%�&(����! �" steam ������������(� �� %����&�$&(����!)�� steam ��% �!!�"!�

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ก����

ก���%�$� &(����!ก���%�$� &(����! ( Heat Transfer )( Heat Transfer )

ก����

ก���'%����

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ก������(�$! (Circulation)

&(����!,��!(!���:�� �"'!��2� ��� superheater ��������(� �����$ fluid (!��� �� �!���) �"$7%B�$)! %� %�!��! �"�*+!2�(-5&(����!!�� ก�*���-568�B7��� %�(�)��2"��ก(%� safe limit ��%)�� %���$��$ ก������(�$!$%�2%�! "� fluid ,5*�ก�!��%)�� %��!,!�ก�!�* (overheat) ก������(�$!�!���'%�! water walls ,���%ก�*+! 3 ���

Natural circulation ����(�$!2��?�����2�

Forced circulation ����(�$!2��?�����2� �-$�� circulating pump �%($ก������(�$!

Once through ���'%�!�(-�-�$(

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��� furnace

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ก��&(�&6�ก���'�����ก��&(�&6�ก���'�����

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,�2�&(�&6� acidity �!��� �")��-�($ ( &%�&(���*+!ก�-) acidity ���(�--�($ pH

&%� pH = 7 ���$�5 !�����&%��*+!ก����� pH 2"��ก(%� 7 !�����O ?�P�*+!ก�-��� pH �7ก(%� 7 !�����O ?�P�*+!-%�

�� "��%)�����!������ %�ก�-ก��ก�-ก�%! !��� �"���B�$)! %,�2���%��O ?�P�*+!ก�-

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Acid Attcak ��� pH 2"��ก(%� 7 !�����O ?�P�*+!ก�- ,�������ก�-�! ����4กก,�ก'!� %�-�

Caustic Attack ��� pH �7ก(%� 7 ��ก0 !�����O ?�P�*+!-%� ,� ��)�����4กก�%!�-���%!�-�$(ก�! ,� ��)�����4กก�%!�-���%!�-�$(ก�!

ก��*�ก�! corrosion ���,�2�&6� &%� pH ���ก��,�-�ก�� �"�, *!)!!���

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scale �"�ก��B�$)! %,� ���!�� �"&���$Q!(!

��)�� %�ก�- overheat ����2ก)! �"�6-

Scale �ก�-,�ก���$7%)!!���,�*��ก�-�($ �����(!�$ (suspended solids) �������$ (dissolved solids)

�����(!�$ & 2�ก!,�&�!,��"�ก*�ก �"��$7%)!!���ก���ก�-ก�-$)�� �������$ �����(!�$ & 2�ก!,�&�!,��"�ก*�ก �"��$7%)!!���ก���ก�-ก�-$)�� clarifier �������$ & �ก� ��% �"!����-�����$�(� ;5"������-��ก% silica

(Sio2-;���ก!�-ก�;-9) �*+!���*��ก�,���(ก ���4ก,�&��;�$� ��� ��ก!��;�$�

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���!��� �� "�!����ก�-�5�!����7ก�%ก,�ก steam drum

���(��"�ก*�ก,�2ก&��$7%B�$)!���!���������"�&(��������!�5�!( & �ก� ก��-�� �-��ก% �&��;�$� �����ก!��;�$� )

���*�%$ ���(�!�!����,�ก��$�*+!2�ก��! �ก��2��'!�B�$)! % ��� steam drum

'� *���� ?�B���-� �����ก���%�$� &(����!�-�$�ก�5�! *���� ?�B���-� �����ก���%�$� &(����!�-�$�ก�5�!

'����$��$���$�� �"�ก�-,�กก���ก�-2�ก��! & %�2ก

���&(�&6� concentration (&(��������!) �-��-$(�?� continuous blowdown

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ก���2����� ����2 ก���2����� ����2 ((phosphatephosphate) ) ��*)!���!�����*)!���!��� ,��%($)���-&(��ก��-���!�! "��,�ก�&��;�"$������ก!��;�"$�)!���!����-�

����2 ,�,���&��;�"$������ก!��;�"$� )!!���)���(�2�(ก�!�*+! Sludge (����&�!,2�ก!)

,5*�ก�!ก���ก�- hard scale (2�ก��!��4)

ก�� ��ก�� �� continuous blowdowncontinuous blowdown ,�ก��,�-����&�����%(! �",���*+!����������!��� ���*����0ก������ "!0 -�!��!,5,���*+!2��2������&���-��$�%(! �"�7/���$�*

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6ก0(�!�!�ก�!�&��R ,�2�!��!���)!���!����*2�(,(��&����9�� "��&%�

silica , phosphate , total solids (*����8������4 ����- �"��$7%)!!���) ��� pH