Supercritical Sliding Pressure Operation Once-Through Boiler

Transcription

1 โรงไฟฟ าพล งความร อนราชบ ร RATCHABURI THERMAL POWER PLANT Supercritical Sliding Pressure Operation Once-Through Boiler นายพลเชษฐ โตสมบญ ญ ว ฒ ว ศวกรเคร องกล (วก.914) ว ศวกรระด บ ศก 7 หมวดว ศวกรรมการผล ต หน วยว ศวกรรมและบ ารงร กษาโรงไฟฟ าพล งความร อน โครงการเด นเคร องและบ าร งร กษาประจ าโรงไฟฟ า บร ษ ท ผล ตไฟฟ าราชบ ร จ าก ด การไฟฟ าฝ ายผล ตแห งประเทศไทย

2 Topic 1 Introduction 2 How to Operate 3 How to Design 4 How to Maintain

3 Introduction Once Through Boiler for Power Plant in Thailand Plant Location Capacity Technology Ratchaburi Thermal Power Plant Unit 1 & 2 Ratchaburi 735 MW Supercritical (Oil / Gas) GHECO-One Power Plant Rayong 660 MW Supercritical (Coal) Maemoh Thermal Power Plant* Maemoh xxx MW Ultra Supercritical (Coal) * Maemoh Power Plant, Electricity Generating Authority of Thailand (EGAT) - Construction on process

4 Introduction Once Through Boiler Technology Plant Main Steam Temperature Reheat Steam Temperature Pressure Advanced Ultra Supercritical* C 815 C 350 Bar Ultra Supercritical 600 C 620 C 290 Bar Supercritical 540 C 560 C 250 Bar * Babcock & Wilcox Power Generation Group, Inc. ** Siemens AG. Power Generation

5 Introduction Supercritical Cycle Critical Point 221 bar-a, 371 deg-c Temp Subcritical Cycle Entropy * Adani Power Maharashtra LTD.

6 Introduction Ratchaburi Power Plant Boiler Unit 1 Boiler Unit 2 Turbine Building FGD Unit 2 FGD Unit 1 Cooling Tower Unit 1

7 Ratchaburi Thermal Power Plant Capacity 735 MW/Unit Once Through Boiler 3 Stage Turbine Water Cool Generator With Flue Gas Desulphurization (FGD) Loading / De-loading Rate 7-60 MW/min Primary Response 20 MW Five Minute Response 137 MW

8 Introduction Plant Historical Initial Firing Steam Admis First Sync. COD. Oct 26, Dec 18,2000 Dec 24, Jun 15, Years Operation May 15,2014 RB-T1 Initial Firing i Steam Admis First Sync. COD. Mar 25,2000 Apr 28,2000 May 3,2000 Oct 28, Years Operation May 14,2014 RB-T2

9 How to Operate

10 How to Operate Operation Section Organization Chart Plant Operation Shift 1 Section 1 Supervisor Engineer 1 Thermal Plant Unit 1 Common Thermal Plant Unit 2 Boiler Board Turbine Auxiliary Auxiliary Turbine Auxiliary Auxiliary Boiler Board Board Bil Boiler Turbine Board Bil Boiler Turbine WWTF. FGD 2 2

11 w to Operate

12 P&I Diagram

13 w to Operate Hot Warmth Condition How long from Off Synch < 8 hours Warm > 8 hours and 96 hours Cold > 96 hours Start-Up Notice Time (Each Unit)

14 w to Design cation Pressure : Temp. : Flow Mitsubishi Supercritical Sliding Pressure Operation Once-Through Boiler Superheat 279 barg Reheat 67 barg Superheat 548 C Rh Reheat 568 C : Superheat 2,530 t/h System : Balanced Rh Reheat 2,004 t/h

15 w to Design cation Temperature Control : uperheat 2 Stage De-superheater Spray (3 Stage Superheater) Reheat Gas Recirculation & 1 Stage De-superheater Spray (2 Stage Reheater)

16 roduction subishi Supercritical Sliding Pressure Operation ce Through h Boiler Advantage of This Boiler

17 roduction subishi Supercritical Sliding Pressure Operation ce Through h Boiler Higher Thermal Efficiency

18 roduction subishi Supercritical Sliding Pressure Operation ce Through h Boiler Sliding Pressure Operation (SH)

19 roduction subishi Supercritical Sliding Pressure Operation ce Through h Boiler Higher Partial Load Efficiency

20 roduction subishi Supercritical Sliding Pressure Operation ce Through h Boiler Less Thermal Stress To HP Turbine

21 roduction subishi Supercritical Sliding Pressure Operation ce Through h Boiler Fast Response Load Demand

22 roduction subishi Supercritical Sliding Pressure Operation ce Through h Boiler Higher Thermal Efficiency Sliding Pressure Operation (SH) Higher Partial Load Efficiency Less Thermal Stress To HP Turbine Fast Response Load Demand Low Nox PM Burner Mixed Fuel Operation (Heavy Oil & Gas)

23 roduction ration Condition ndition Description Steam Condition Output (kw) A Guarantee Capacity 24.2MPa 538/566C 735,000 B Max. Calculation 25.4MPa 538/566C 841,000 C Guarantee T/B Max. 24.2MPa 538/566C 756,500 D MCR 25.4MPa 538/566C 804,000 E Normal Pressure VWO 24.2MPa 2MPa 538/566C 778,500 F 75% 21.4MPa 538/566C 551,250 G 50% 14.2MPa 538/566C 367,500 H 25% 10.9MPa 538/532C 183,750

24 roduction Boiler Efficiency (%) Condition Fuel Oil Fuel Gas 100% ECR % % % B-MCR

25 w to Design

26 w to Design

27 w to Design Structure and Equipments Supercritical Sliding Pressure Operation Once- Through h Boiler

28 w to Design cture and Equipments

29 w to Design cture and Equipments

30 w to Design Structure and Equipments Natural Gas Heavy Oil Light Oil

31 w to Design cture and Equipments

32 Standard Emission Gas Oil w to Design cture and Equipments

33 w to Design tructure and Equipments

34 w to Design tructure and Equipments Steam / Water Condition Pressure 25.5 MPa Temperature 339 C Flow 2200 t/h

35 w to Design tructure and Equipments DEA ECO WS S H & R H W S D T TRB HP HTR BFP LP HTR CPP CP COND.

36 w to Design tructure and Equipments 1ry 2ry 3ry SH Steam Condition Pressure 24.7 MPa Temperature 540 C

37 w to Design tructure and Equipments RH Steam Condition Pressure 448MPa 4.48 Temperature 568 C

38 w to Design tructure and Equipments Safety Valve Set Pressure

39 w to Design tructure and Equipments Safety Valve Set Pressure

40 w to Design tructure and Equipments Feed Water Condition Pressure 27.8 MPa Temperature C Flow 2200 t/h

41 Air Heater เพ มอ ณหภ ม อากาศท ใช ในการเผาไหม จาก >335 C w to Design tructure and Equipments

42 w to Design tructure and Equipments

43 w to Design tructure and Equipments

44 w to Design tructure and Equipments

45 w to Design tructure and Equipments

46 w to Design tructure and Equipments

47 w to Design tructure and Equipments Gas Recirculation Fan

48 w to Design ater / Steam Flow Diagram Water Seperature Pressure Temperature 25.5 MPa 408 C Water Wall Pressure 25.5 MPa Temperature 339 C Economizer Pressure 27.8 MPa

49 w to Design ater / Steam Flow Diagram RH Steam Condition Pressure Temperature 4.48 MPa 568 C SH Steam Condition Pressure Temperature 24.7 MPa 540 C

50 w to Maintain

51 w to Maintain lanned Outage inor Inspection ท ก 2 ป ระยะเวลา 40 ว น ajor Overhaul ท ก 6 ป ระยะเวลา 60 ว น

52 w to Maintain

53 w to Maintain reservation Boiler Fire Side ifier 3/hr 00

54 w to Maintain UD (Boiler) UD 3500 (LP Turbine)

55 w to Maintain reservation Boiler ment Preservation Method How to check am rator ter / Side) am rator ide) Wet Lay Up (Old) Wet Lay Up (New) Fill Demin. with Fill Demin. Water with Hydrazine 40% (conc) NH3 and control ph > 9, solution (200 ppm) and Low DO and Cation Ammonia for control ph Conductivity 0.2 µs/cm 10 Dry Lay Up Install Dehumidifier for Control Relative Humidity < 20 % Sampling and Check Water Quality Every 2 Weeks Install Humidity Recorder and Check It Every Day

56 w to Maintain reservation Boiler

57 w to Maintain igh Pressure Heater & Relief Valve

58 w to Maintain olisher System เพ อปร บปร งค ณภาพน า Demineralize

59 จบการน าเสนอ จบการนาเสนอ