This is the latest Stoker Type Refuse Incineration Equipment designed to permit complete incineration of complicate nature of wastes and its features include the controlled treatment of various harmful materials such as dioxins, the high efficiency energy recovery, and the use of various automated systems. Fig. 1 shows a conceptual diagram of the Incineration Plant combined with a Refuse Vacuum Sealed Conveyance System.

Fig. 1 TOKYO RINKAI INCINERATION PLANT

2. Characteristics

1) Measures for high calorie refuse.

 (1) The use of the furnace body with higher cooling effect to have higher
     temperature combustion capability.

 (2) Providing a uniform supply of combustion air to prevent local high 
     temperature combustion.

 (3) The use of well heat resistant stokers.

 (4) The use of stoker cooler by means of steam spray.

These measures enables this system to cope with high calorie refuse (3,000 to 3,500 kcal/kg).

2) Preventive measures for harmful substances

 (1) For HCl, SOx, dust and mercury, a dry type bag filter system having the 
     same level of removal efficiency as the conventional wet system is provided 
     in which the temperature at the inlet of bag filter is reduced to the order 
     of 42 150tC and a cake filtering mechanism with salked lime and special 
     dose is used.

 (2) For dioxin, advanced combustion control is introduced to reduce its
     generation, as well as bag filters to remove it with a high efficiency 
     (90% or more ).

 (3) For NOx, proper selection of non-catalytic and catalytic de-NOx systems. 

3) Systems for automatic control

 (1) Automatic combustion system in which constant steam flow control, constant
     refuse throughput control, and CO concentration control are now available.

 (2) Automatic start/stop system in which start and stop operations requiring
     complicated operation are automatically performed according to a 
     predetermined furnace temperature curve for controlled increase and 
     decrease of the furnace temperature.

 (3) Fuzzy control system in which the operating rules empirically obtained by
     skilled operating personnel are incorporated into the automated system by
     using a fuzzy control method with quantitative representation of
     ambiguities.

 (4) Failure diagnosis system which enables the user to run this system stably 
     with safe and ease by taking the appropriate corrective action if a failure 
     occurs .

 (5) Run simulation system which enables the user to train the operator by using
     the simulator.

 (6) Network system available which enables the user to have knowledge control 
     of the failure diagnosis system and to give technical support from a remote 
     station. ( Fig.2 )

Fig.2 DIAGNOSIS & NAVIGATION SYSTEM
System operation form
Substitution of knowledge control and other functions can be obtained by the network service system.