Advantages

Favorable transport costs thanks to the modular structure of our grates
Comparatively low own energy consumption

Favorable transport costs thanks to the modular structure of our grates
Comparatively low own energy consumption
Favorable partial load and load change behavior
Automatic ash removal
Staggered air supply
Combination with dust and granulate injection possible

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Moving grate

Direct current

DIRECT CURRENT

Suitable for fuels with low to medium calorific value
Low temperature difference between fuel and exhaust gas
Long residence time of the exhaust gas in the combustion chamber
High rust load as hot combustion gases hit the rust directly
High heat load on the combustion chamber ceiling
Low NO_X-emission

Medium current

MEDIUM STREAM

Preferred design of the combustion chamber, compromise between direct current and countercurrent
Even temperature distribution in the exhaust gas
Average heat load in the combustion chamber
Suitable for fuels with variable calorific value

Countercurrent

COUNTERCURRENT

Suitable for moist fuels with low calorific value
Shortened drying zone of the fuel
High combustion chamber load and low rust load

Grate with combustion air system

Grate with combustion air system

For moist biomass fuels, peat, household waste and bark, the primary combustion air is preferably preheated by adding exhaust gas.

This promotes the drying of the fuel and reduces nitrogen oxide formation due to the low-oxygen combustion air.

Granulate and grinding dust injection

Quick controllability
Control range: 0 %, 50 % - 100 %

Hot gas generator

Provision of hot gas for dryers.
Any temperature for the heat consumer, e.g. dryer, can be set via a downstream mixing chamber.

All Grate firing

Grate firing

Our biomass combustion concepts

The INTEC grate is particularly suitable for the combustion of biomass and solids with different calorific values. Solids that are mixed with impurities such as metals and stones can also be burned on the grate without any problems.

Due to its robustness and flexibility, the grate has become the preferred type of combustion in many Industry sectors .

Even fine-grained fuels can be burned safely over the grate by blowing them in.

INTEC gratings are manufactured modularly. Greater combustion outputs can be achieved by interconnecting individual grate modules.

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Grate firing

Moving grate

INTEC's combustion systems demonstrate their high level of cost-effectiveness and fuel flexibility in almost all climatic regions of the world.

The INTEC moving grate has become established for the incineration of all types of biomass waste.

The robust design ensures high operational reliability and availability.

The special design of the combustion chambers ensures compliance with emission requirements.

With biomass fuels and other moist fuels such as peat and household waste, the primary air is preheated or exhaust gas is mixed into the primary air (flue gas circulation).

This ensures that only minimal nitrogen oxide formation occurs in areas of high flame peak temperatures.

In larger plants, part of the exhaust gas is injected into the combustion chamber above the grate

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Grate firing

Grate with granulate and grinding dust injection

The wood industry produces sawdust, screening and grinding dust. These fine biomasses can be used for energy by being burned by blowing them into the combustion chamber over the grate.

Total power range: 10 – 100 MW

When grate firing and dust injection are operated in parallel, the grate is operated as base load firing and the dust injection is operated as control load firing.