Description of equipment at the Tsuzuki Plant

Please click on each item or scroll down to proceed.

1. Input stage
2. Garbage pit
3. Garbage crane
4. Inside the incinerator
5. Boiler
6. Heat reduction tower
7. Bug filter
8. Chimney
9. Ash conveyor
10. Ash pit
11. Ash crane
12. Central Control Room
13. Turbine power generator

１．Input stage
Kannon door type hydraulic drive type, total of 14 gates
After weighing the weight of the garbage, the collection truck puts the garbage into the garbage pit.
The Tsuzuki Plant receives garbage primarily from Tsuzuki Ward  , Aoba Ward, Kohoku Ward and part of Midori Ward.

２．Garbage pit
15,000m3（5,000m3×3）
The Tsuzuki Plant has three 5,000m3 pits and can store approximately 3,600 tons of garbage.
Garbage is stored once in the garbage pit, not burned immediately.
The odor of the garbage pit is blown into the incinerator as air for combustion to decompose the odor.

３．Garbage crane
Ceiling lane with hydraulic open-closure polyp bucket
The garbage is put into the incinerator by a garbage crane.
One grab is about 6 tons, and you can grab the garbage for about 3 collection vehicles.
There are three garbage cranes, and two can be operated at the same time.
The bucket of the garbage crane is 4.9m wide and weighs about 6.8 tons.

４．Inside the incinerator
Mitsubishi-Mine Incinerator (400t/24h)
The temperature inside the incinerator is 850°C or more, and the garbage ignites spontaneously.
When launching the incinerator, heat it to 300 degrees or more with a gas burner and then put in garbage.
After that, the temperature gradually rises to 850°C.
At the Tsuzuki Plant, there are three incinerators that can burn 400 tons of garbage a day, and they are used in order while maintaining them.

５．Boiler
Boiler for gas cooling: single furnace type, natural circulation type (with carbon saver and overheater)
63.1t/h、Max2.25MPa、3,675m2
Boilers use the heat generated when burning garbage to produce steam.
It is the same principle as boiling water with a kettle. Most of the steam produced is used for turbine generators.
It is also used as a heat source for heated pools and baths, and sent to facilities that use residual heat in the factory, and is also used as a heat source for heated pools and baths.

６．Heat reduction tower
113,970Nm3/h, entrance 380 degrees
The bag filter cannot withstand temperatures above 250 degrees, so use water to lower the temperature.
The water used is reused in the factory.

７．Bug filter
Filtration type dust collector (gas volume 136,620Nm3, 250 degrees MAX, 0.01g/m3N or less)
The dust in the exhaust gas is removed through a filter called "filter cloth."
The filter is wrapped in a cylindrical framework, and there are 1760 cylinders in a single bug filter.
Since the filter cloth deteriorates at high temperatures, the temperature of the incoming exhaust gas is constantly managed to below 200 degrees Celsius.

８．Chimney
Steel 3 cylinder flue, concrete outer cylinder support assembly chimney height 130m, cylinder body diameter 2.45m
It emits exhaust gas into the atmosphere and is at a height that does not affect the surroundings.
In winter, white smoke can be seen, which is the moisture contained in the exhaust gas.
This is because it is cooled by touching the atmosphere and becomes water vapor.
At night, the red lamp is lit so that the plane can see the chimney.

９．Ash conveyor
Electric vehicle-driven endless chain (over-return type)
The incinerated ash from the incinerator is transported to the ash pit by an ash conveyor.
Burning garbage causes about one-twentieth of the volume and about one-fifth of ash.
The treatment is carried out in a sanitary and stable manner.

１０． Ash pit
1,140m3（380m3×3）
Ash pits, there are three pits where ash is temporarily stored.
Fly ash obtained by a dust collector is solidified with cement before being sent to the ash pit.

１１． Ash crane
Ceiling lane with hydraulic open and closed clamshell bucket (4.8t)
The ash is loaded on trucks by ash cranes and transported to landfill.
About 6.5 tons of ash is loaded per truck.

１２． Central Control Room
Operation of the incinerator is carried out in the central control room.
All factory data is collected in the control room for centralized management.
The incinerator operates 24 hours a day, and staff is stationed in the control room 24 hours a day.

１３． Turbine power generator
Impulsive condensation type 13,530 kVA, 13,000kW, 6,600V
The turbine is rotated by the power of steam made by the boiler.
The turbine has a generator, which generates electricity by turning the generator. Remember the bicycle light, it is the same principle that the light turns on when the tires rotates.
Electricity is used in factories and is also sent to facilities that use residual heat. Nevertheless, the surplus electricity is sold to electric power companies. The amount of electricity sold will be more than 400 million yen per year.