Our Mission
To make a better living environment on a global scale
Plantec Asia Pacific Pte Ltd was established as an international business development company based in Singapore. We aim to promote the Vertical Combustor - a new type of incineration technology invented in Japan - throughout the Asia Pacific region. As the issue of cost-effective and sustainable waste management system has become one of the biggest global challenges in recent years, Plantec Asia Pacific strongly believes that Vertical Combustor is the solution.
What we do
Vertical Combustor with
SLA combustion method
We design and supply incineration plants and Waste-to-Energy plants using the Vertical Combustor, developed by Plantec Inc., our head office in Osaka, Japan. We provide solutions according to your waste management needs.
News & Events
Vertical CombustorTM
Performance proven for coming decades
Turning waste into fuel for perfect combustion
SLA Combustion Method – Turning waste into dried solid residues and combustible gas
The Vertical Combustor (schematic at right) utilizes the "SLA Combustion Method" invented by Plantec Inc., a parent company of Plantec Asia Pacific Pte Ltd.
Waste fed into the Vertical Combustor falls by gravity into the primary combustion chamber. The waste in the primary combustion chamber is partially combusted (carbonized) and pyrolyzed (combustible gas is produced) by the super low air ratio primary combustion air (λ<=0.5) supplied from the bottom of the furnace.
The waste is continuously fed into the furnace by an automatic feeding system, so the new waste falling on the waste layer (Drying Zone) is completely dried by the high temperature pyrolysis gas coming up from the Pyrolysis Zone. The dried, carbonized solid waste is a fuel-like solid material. Therefore, they can be easily burned in the Burning Zone. Due to the long residence time in the Ember Burning Zone and Final Burning Zone (ash layer), all unburned solid residues are then completely burnt out and turned into ash. The incineration ash is then intermittently discharged to a water-sealed ash conveyor installed underneath the furnace.
Meanwhile, combustible gas generated by the pyrolysis process is further combusted in the upper part of the furnace (freeboard) by secondary combustion air. This two-stage combustion optimizes the minimum generation of pollutants in the flue gas.
The pyrolysis process enabled by the Vertical Combustor takes place inside the furnace without the use of additional fuel. The uniqueness of this technology: Solid residues and flue gas are burned separately in a single system, providing benefits and advantages that conventional incinerators don't offer.
Flow diagram
Key features
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Small, fixed amount of primary combustion air blown from furnace bottom uniformly passes through waste layer.
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Fresh waste dropped on top of the waste layer with relatively high moisture content is not burned immediately, but is completely dried by the hot pyrolysis gas rising from the pyrolysis zone.
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Since the primary combustion air ratio is low, a larger amount of secondary combustion air can be injected into the secondary combustion chamber to ensure efficient combustion of the flue gas to minimize the generation of pollutants.
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Vertical Combustor incinerators can be operated automatically or manually using PLC/DCS.
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The plant equipped with a vertical combustor can operate continuously for 24 hours or intermittently. It can be started up in just 30 minutes, resulting in lower fuel consumption. Additionally, there are no issues with flue gas treatment, even during the period from shutdown to the next start-up.
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Thermal recycling can be achieved through power generation, steam/hot water production, or the utilization of absorption chillers. Since combustion remains stable, power generation from waste incineration becomes highly efficient, ensuring a consistent generation of steam.
Robust to changes
in waste quality
Suitable for various types of waste
No segregation is required
Sludge
<1,000 kcal/kg
<4.1 MJ/kg
Municipal solid waste
<2,000 kcal/kg
<8.3 MJ/kg
Industrial waste
<3,500 kcal/kg
<14.6 MJ/kg
Infectious medical waste
<4,000 kcal/kg
<16.7 MJ/kg
Commercial advantages
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The fed waste is combusted by the heat content of the waste itself, so no auxiliary fuel is required during normal operation. Auxiliary fuel such as heavy oil is used only during start up and shutdown of the plant.
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All wastes of different characteristics and quality are converted into fuel (carbide and combustible gases) by pyrolysis process and then incinerated. Therefore, waste separation is not required.
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Due to its simple structure and fewer moving parts, it is relatively easy to operate. A minimum of 3 people are required to operate the system.
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Fewer mechanical problems because there are no moving parts in the high temperature zone, and the number of moving parts themselves is much less than the other types of incinerators such as moving stoker and rotary kiln incinerators.
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Due to its vertical structure, the land area required is less than other types of incinerators.
Flue Gas Treatment
An original dry-type chemical reaction dust collector
Turbo Chemical Baghouse
Flue gas treatment technology meeting international emission standards
Technical features & advantages
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The thick precoat layer of chemicals (slaked lime and/or activated carbon) increases the contact efficiency between the chemicals and hazardous gases, so that the removal efficiency is equivalent to that of wet treatment such as water scrubber, even though it is a dry treatment. In addition, wastewater treatment is not required as in the wet process.
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The thick precoat layer of chemicals formed on the filter cloth can reduce damage to the filter cloth caused by acid gas, thus extending the service life of the filter cloth.
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High efficiency of contact between flue gas and chemicals reduces unreacted chemicals and chemical consumption. The reduction in the amount of chemicals used also reduces the amount of fly ash, which reduces not only the cost of chemicals, but also the cost of final disposal of fly ash.
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The precoat layer ensures that dioxins, high concentrations of hydrogen chloride, sulfur oxides, mercury and other heavy metals, and other difficult-to-remove toxic substances can be reacted and adsorbed for removal. The flue gas emission standards of not only Japan, Singapore, and Indonesia, but also EU can be met by dry treatment only.
Comparison
Conventional Baghouse
Turbo Chemical Baghouse
170 plants since 1967
We have extensive experiences as one of the pioneers in incineration plant engineering
If you would like to see the full reference list, please contact us!
Let’s Work Together
We’re always looking for new opportunities and are comfortable working internationally.
Please get in touch and one of our project managers will contact you about beginning the proposal process.