ECCJ / TextReport / India / Energy Conservation Activities including Case Study in Pulp & Paper Sector

ECCJ / TextReport

India

4. Rationalization of Conversion into Thermal Power
(1) Exclusive power generation equipment

1) Management of the exclusive power generation equipment (Steam turbine, gas turbine) The main steam pressure and temperature of the steam turbine have been controlled as close to the premeditated values as possible for operation. Too high degree of vacuum of the condenser may cause a drain attack to the turbine blades.

(2) Cogeneration system

1) Management of the cogeneration system (Extraction back pressure turbine, diesel turbine)
It is ensured that the exhaust pressure of the extraction back pressure turbine is always lowered in contact with the process side.

5. Prevention of Energy Loss due to Irradiation, Conduction, Resistance, Etc.
(1) Prevention of heat loss due to irradiation, conduction, etc

1) Heat insulation criteria
Heat insulation has been implemented without exception in order to keep economic efficiency of the pipes, tanks, device bodies, and so on.
Energy conserving calculation for heat insulation has been made, starting from about 60ºC to provide heat insulation for the areas with high profitability.
A silica insulating material is used for the steam pipe, considering prevention of dropout and secular maintenance.
2) Maintenance and inspection of the heat utilization system
A steam trap has been periodically inspected and maintained in order to prevent steam leakage resulting from an operational failure.

6. Rationalization of Conversion of Electricity into Power, Heat, Etc
(1) Motorized force application system, electric heating system, etc.

1) Management of the motorized force application system, electric heating system, etc.
For a pump, fan, etc., the measures, such as impeller cutting, rotation frequency control, quantity control and upgrading to higher-efficiency devices, have been taken accordingly in response to the changes of the operating conditions, etc.
Use of a high-efficiency electric motor has been standardized for new installation.

II. RATIONALIZATION GOAL OF ENERGY USE AND SYSTEMATIC MEASURES

Mentioning 1% or more annual average reduction of energy consumption in the "Environmental Charter," each factory has been making efforts to accomplish the goal every year.

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