UTSR visio moving grate furnace

Combustion air preheating

The temperature of the primary air used for combustion is of great importance for an energy-efficient combustion process. The use of a combustion air preheater makes it possible to reduce the nominal output to 15 % in controlled part-load operation.

Revolution adaptive - control of changing fuels

Based on the fuel water content, the heat output generated, the combustion temperature and the current grate occupancy, the new Revolution adaptive control recognizes the fuel quality used.

With Revolution adaptive, a permanently low residual oxygen content in the flue gas is maintained even with changing fuel quality and the target output is always achieved. The flue gas recovery and air distribution are automatically adjusted and the ember bed is kept constant. This has a positive effect on efficiency, fuel consumption, emissions and wear. 

Automatic under rust removal

Automatic discharge of the ash under the moving grate by means of a
system directly into the grate ash removal screw or into a drop chute.
a chute.

Standard for UTSR-1200 visio to UTSR-8000 visio

Denox / SNCR process (reduction of nitrogen oxides)

When wood is burned, nitrogen oxides are formed from the nitrogen in the fuel . The nitrogen oxides (NOx) in the flue gas can be reduced by the SNCR process so that the legal guidelines are not exceeded.

• Selective non-catalytic reduction process
• Reducing agent urea solution
• Reducing agent reacts at a furnace temperature between 840
  and 1000 °C, corresponding to a power range of approx. 50 - 100 %.

Vault ceiling cleaning (from power 1200 kW)

Automatic pressure shock cleaning of the vault ceiling. An intensive blast of compressed air is used to clean off ash deposits on both sides of the vault at adjustable intervals. This reduces manual cleaning to a minimum.

Hydraulic pusher ESCD

The ESCD hydraulic slide-in valve operates on the sluice principle and consists of the hydraulic slide conveyor, the metering container, and a fire protection slide valve. In order to exclude a backfire into the fuel transport system, the hydraulic push feeder only retracts when the fire protection slide gate is closed.

Direct Inserter HFED

The HFED direct gate valve consists of a push rod with 2 pulling hydraulic cylinders and the relief box. It is designed for installation in the on-site concrete channel.

automatic ignition

Up to 900 kW nominal power and at a maximum fuel moisture of M 35, electric industrial hot air blowers are available for igniting the fuel in the firing pan or on the moving grate.

Boiler bypass with pressure surge cleaning

Boiler bypass for raising the exhaust gas temperature in startup and shutdown operation. This increases the filter availability.

Turbulators - For one or two boiler trains

The heat exchanger tubes are equipped with plug-in turbulators to lower the exhaust gas temperature. This increases the efficiency of the firing system. In case of frequent operation in partial or low load, the turbulators may have to be removed if no boiler bypass is available.

Central pressure line when using boiler bypass and / or intermediate ceiling cleaning

If one or both options are selected (boiler bypass and intermediate ceiling cleaning), the central pressure line is required as a pressure accumulator
required.

Flow temperature

Three flow temperature ranges up to 115 °C, TÜV tested, are available for hot water boilers:

• ≤ 90 °C Hot water
• ≤ 95 °C hot water
• ≤ 105 °C hot water

Exhaust gas recirculation

Regulated admixture of flue gas in primary and secondary zones to lower the grate temperature, ensure burnout when the secondary air enters and cool the combustion chamber. Recommended for fuels with a high calorific value (less than M30), with a low ash melting point and in combination with the DeNox process and flue gas condensation systems.

Fire room camera

Optional firebox camera for visual inspection of the firebox via remote access.

Low load operation 15

The temperature of the primary air used for combustion is of great importance for an energy-efficient combustion process. The use of a combustion air preheater makes it possible to reduce the nominal output to 15 % in controlled part-load operation.