RELIABILITY ENHANCEMENT OF PELLETISER UNIT PROJECT GUIDE: Mrs.SUGHASHINI Easwari engg college DONE BY : A.JENNIFER MERLINE(30409107035) V.MADHUMITHA(30409107047)

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Presentation transcript:

RELIABILITY ENHANCEMENT OF PELLETISER UNIT PROJECT GUIDE: Mrs.SUGHASHINI Easwari engg college DONE BY : A.JENNIFER MERLINE( ) V.MADHUMITHA( ) M.MANJU( ) B.V.PRAVEEN( )

OBJECTIVE To increase the reliability of sulphur pelletizing unit by using PLC. The solid state controllers are replaced with PLC. Redundancy technique is used to increase the reliability of the unit. A9-Reliability enchancement of pelletiser unit

BLOCK DIAGRAM A9-Reliability enchancement of pelletiser unit SULPHUR PIT [ C ] SULPHUR PIT [ C ] SULPHUR PUMP TRANSFER CONVEYOR STEEL BELT ROTOFORMER INCLINED CONVEYOR COLLECTOR CONVEYOR REVERSIBLE CONVEYOR TRUCK SILO

ROTOFORMER V1 LSH01 LSL01 SULPHUR PIT PUMP1 FS01 V2 CONVEYOR Schematic diagram of pelletizing system WATER TANK PUMP 2 PUMP3 V3 A9-Reliability enchancement of pelletiser unit

Storage system A9-Reliability enchancement of pelletiser unit XILO1XILO2 LSH02 LSH03 LSL02 LSL03 PS04PS05 VALVE4VALVE5 REVERSIBLE CONVEYOR M1 M2

PROBLEM ANALYSIS The pump that sends the cooling water to conveyor may trip at any time due to various causes. The pump failure in the plant is considered as single point failure which causes the whole plant to shut off. The loading of sulphur pellets in the truck is done manually. The position of the truck under the SILO is watched and then the valve is opened by the person manually. This manual operation is made automatic. A9-Reliability enchancement of pelletiser unit

FEASIBLE SOLUTION Solid state devices are replaced by PLC which increases reliability and reduces cost. The failure of pump is avoided by redunctancy.An alternative pump is used.When the operating pump faces a failure the control is transferred to another pump automatically. The manual loading of sulphur pellets to the truck is replaced automatically using the proximity sensor. A9-Reliability enchancement of pelletiser unit

LADDER DIAGRAM

A9-Reliability enchancement of pelletiser unit