Start Up the Evap System

Transcription

1 Page 1 of 14 Purpose: To start the Evaporator System for normal operation. Required PPE: Safety Glasses Hearing Protection Steel Toed Shoes Nitrile Gloves Potential Hazards: In the automatic mode the equipment may start without warning. Keep hands clear unless the unit is locked out in a safe condition. Fall hazard exists on ladder and the raised platform. Use three-point contact when climbing up to or down from the platform. The vessels, heat exchangers and piping for have hot surfaces which could cause burns. Avoid contact with these hot surfaces. Reference Documents: None Required Equipment & Materials: Startup process log sheet S-2536 ph tester

2 Page 1 of 14 Line up Cooling Tower Water Note: if the cooling tower is already in operation, proceed to the next section. 1. Turn CONTROL POWER Switch ON at the Main control panel. 2. Verify that Green CONTROL POWER light is lit. 3. Wait for HMIs to boot up. 4. Turn on Disconnect Switch for COOLING TOWER PUMP.

3 Page 2 of Turn on Disconnect Switch for COOLING TOWER FAN. 6. Press the START button on the CT Fan Controller to start the controller. 7. At the Concentrator HMI (Page 2) turn on the cooling tower water: a. Turn on CONDENSER WATER PUMP. b. Turn on COOLING TOWER PUMP. c. Turn on COOLING TOWER (fan). a. c. b.

4 Page 3 of 14 Start the Seal Water System Note: if the seal water system is already in operation, proceed to the next section. 8. At the Stripper HMI (Page 2) turn on the WATER SEAL PUMP. 9. Verify water seal return flow to tank. Flow should be visible here 10. Inspect stripper system pumps for seal water leaks.

5 Page 4 of Remove and inspect filter screen. 12. Clean screen if any debris or foreign material is found. 13. Open Recovery Water Valve.

6 Page 5 of At the Stripper HMI (Page 1) Start the FEED PUMP. 15. Wait 10 seconds before proceeding. 16. Start the 1 ST EFFECT EXTRACT PUMP. 17. Start the 2 nd EFFECT EXTRACT PUMP.

7 Page 6 of Verify that the vacuum break valve is closed. 19. At the Stripper HMI (Page 2) Start the VACUUM PUMP. 20. Start the ESSENCE VACUUM PUMP.

8 Page 7 of Verify that system is building vacuum. Gauge should read at least 10 inhg. Before continuing to the next step. 22. Start the HOT WATER PUMP at the Evap System HMI. 23. Verify that injection water supply valve is open. 24. Visually inspect heat exchanger for leaks.

9 Page 8 of Set injection spray water valve to 45-degree position as shown. 26. Open spray heater water supply valve. 27. Prime the fluid column to ensure there is a level visible in the sight glass. Sight Glass

10 Page 9 of At the Stripper HMI (Page 1) Start the condensate and extract pumps: a. 1 ST EFFECT COND PUMP b. 2 ND EFFECT COND PUMP c. SPRAY HEATER EXTRACT PUMP d. CONDENSOR EXTRACT PUMP e. ESSENCE COND PUMP a. b. c. d. e. 29. Open steam supply valve to hot set.

11 Page 10 of Open condensate valve to drain water from the system 31. Close valve when only steam is present. 32. Open steam supply valve (Chain Operated).

12 Page 11 of Open condensate valve to drain water from the system 34. Close valve when only steam is present. 35. Adjust STRIPPER STEAM SUPPLY PRESSURE setpoint to 20 PSI: Touch to bring up keypad for entry.

13 Page 12 of Turn STEAM VALVE on. 37. Open the manual inlet valve to balance tank. 38. Adjust flow rate and 1 st stage vacuum to as needed to achieve desired brix.

14 Page 13 of 14 History of Revisions Revision Revision Date Revised By Reason for Revision