U T I L I T YE Q U I P M E N T

safety valve is closed, the safety over-fl ow valve auto-matically opens at the same time. The oil can now fl ow back into the tank in order to avoid the disruption of the circuit.

OIL PRE-HEATING, FILTER AND PUMP SKID

Afterwards, the oil is conducted through a reversible oil double fi lter in order to avoid possible contamination entering the subsequent supply skids.An oil double pump aggregate with electric motor in-creases the oil pressure to the required operating pres-sure. An over-fl ow control valve connected in parallel regulates the outlet pressure. An oil return valve pre-vents the fl ow back of the oil into the aggregate.For heavy oil usage, the electric oil pre-heater with in-tegrated safety elements heats the oil to the required operating viscosity for the oil burner. As an alternative, steam heating is available.

ATOMISING AIR REVERSING, MEASURING AND PRESSURE CONTROL SKID

The atomising air skids are designed for reversing, measuring and controlling the air pressure. The com-pressed air is required directly at the burner to atomise the oil for the fi ring inside the tank. Due to the reversing of the burners at regenerative fur-naces, the operating side is provided with full pressure atomising air while the non-active side is supplied with only a small quantity for cooling the burners.

OIL BURNER EQUIPMENT

HORN® designs and manufactures its own oil burners. Special burners have been developed for regenerative furnaces such as the Multi Oil Burner MOB1 and MOB2. In combination with an air casing these burners can be used as air casing burners type HCB or CCB on recuper-ative furnaces.

OIL REVERSING, CONTROLLING AND MEASURING SKID

Due to the regenerative heating system, the fi ring side of the melting tank must be switched at intervals of approx. 20 to 30 minutes. The reversal can either be car-ried out with the oil reversing, controlling and measur-ing skid for an entire burner side (complete) or for each individual burner of a burner side with the oil reversing, controlling and measuring skid (single).Shutting-off the relevant burner side or the individual burners is carried out by the oil shut-off valve (function control air opens – spring closes).

OIL PRESSURE CONTROL AND SAFETY SKID

The total oil volume is conducted by a reversible oil double fi lter in order to avoid possible contamination entering the burner. A down-stream pressure controller regulates the oil pressure to the set operating pressure.Shutting-off is carried out by a suitable oil safety valve (function control air opens – spring closes). If the oil

O I L H E A T I N G E Q U I P M E N T F O R M E LT I N G T A N K

An emergency water feeding unit, supplied by fi re/city water, guarantees a stable supply of the required cool-ing amount during a failure of the main cooling water system.

Flow meter and sensors indicate the volume fl ow to each consumer and give an alarm to the PLC in case of minimum fl ow rate.

Biocide and hardness dosing units are optionally avail-able.

The whole cooling system is equipped with stainless steel parts/pipes. This guarantees a corrosion free sys-tem in the whole process.

TANK AND THROAT COOLING

The tank and throat cooling are designed to cool by means of permanent and uniform air or water fl ow (throat). The areas of the glass furnace, which have to be cooled, run the risk of damage from over-heating and/or increased corrosion. This would result in a signifi cant reduction in the lifespan of the furnace and increases the risk of tank leakage. The HORN® tank and throat cooling equipment is designed with special nozzles for precise metal line cooling, thus reducing corrosion of the tank blocks and enabling a longer lifespan.

The cooling takes place via different fans, which extract air from the environment and transport this air through pipelines to the point which has to be cooled. For the tank and throat cooling, two to six (depending on the furnace size) cooling fans are normally used, whereby one of the fans is always designed as a stand-by fan in case one of the other fans is damaged.

The cooling air outlet nozzles are mounted on the exact level of the glass metal line, as the corrosion of the re-fractory material is the highest at this point. Additional spare ports are also provided at the metal tubes to sup-ply additional cooling positions.

C O O L I N G E Q U I P M E N T

COOLING WATER EQUIPMENT

In each glass melting furnace cooling water is required to cool the machines, electrode holders, glass level measuring system or other equipment close to the furnace. HORN® provides cooling water systems with different possibilities to cool down the heated water: closed cooling systems where the water is cooled through a two-circle cooling tower, an adiabatic back cooling unit and/or water to water heat exchanger (to connect to the main existing system).

• Water cooler or water to water heatexchanger

• Supply and return water manifold with pressure monitoring

• Pump skid

• Cooling water tank

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Pump skid

Cooling water tank

MODULES OF THE CLOSED SYSTEM

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The complete range of utility equipment is designed and dimensioned using ultramodern computer skids and special programmes. HORN® plans and manu-factures the equipment according to the costumer’s requirements. HORN® uses only the most reliable and durable equipment from trusted suppliers. Each skid is pre-assembled and tested in order to avoid time con-suming and faulty assembly on site.

HORN® can provide the complete heating equipment for regenerative furnaces, oxyfuel furnaces or recuper-

The gas heating equipment for the melting tank con-sists of various gas burners and different gas skids along with combustion air supply.

GAS BURNER EQUIPMENTHORN® designs and manufactures its own gas burners. Special burners have been developed to reduce NOx emission values, e.g. the DUALFLAME MC and DUAL-FLAME AC burners for regenerative furnaces. These burners can also be supplied together with an air casing for installation in recuperative furnaces with pre-heated air or cold air.

GAS SKIDSGAS REVERSING SKID

Because of the regenerative heating system, the fi ring side of the melting tank has to be changed at intervals of approx. 20 to 30 minutes. Either the reversal is effected for a whole burner side through the gas reversing skid (as a whole), or for each single burner of a burner side by means of the gas reversing skid (single). The shut-off of the respective burner side or of the sin-gle burners is effected through the gas blocking valve (function control air opens – spring closes).

GAS SAFETY AND MEASURING SKID

The gas safety and measuring skid are used for the safety shutdown of the gas heating equipment. The skid consists of two main gas lines. The fi rst main gas line is equipped with two consecutively installed gas safety shut-off valves. The second main gas line is equipped with two monitored ball valves. A gas pressure control device for the maximum and minimum gas pressure and a valve monitoring system (tightness check) are installed in the gas skid.

G A S H E A T I N G E Q U I P M E N T F O R M E LT I N G T A N K

ative furnaces, or only individual gas skids/burners with independent control and integrated safety.

In addition to natural gas, oil and oxygen supply skids, HORN® provides customised solutions such as heating equipment for LPG or biogas, as well as specialised burners for side port furnaces.

Moreover, HORN® provides air tank and throat cooling systems as well as complete cooling water skids for the cooling water supply at the melting tank.

GAS REGULATION MEASUREMENT AND SAFETY SKID

The gas regulation measurement and safety skid are designed for the burner single control. This means that one gas volumeter with analogue output signal is in-stalled in each gas line to the burner.The gas quantity of the single gas line measured by means of the gas volumeter is evaluated and then regu-lated by means of the downstream gas control valve to the required gas/combustion air ratio.

GAS FILTER AND PRESSURE CONTROL SKID

The gas fi lter and pressure control skid serve the regu-lation and stabilisation of the required operating pres-sure of the gas inside the gas heating equipment. The gas skid is equipped with two tracks, one main track and one reserve track, both of which are always open. By adjusting the output pressure of the controller, the reserve track is closed and goes into operation auto-matically only in case of failure of the main track.

COMBUSTION AIR SUPPLY MELTING TANK

The combustion air for the melting tank is generated via an axial fan. In order to prevent failure of the combus-tion air, the fan is designed redundantly and is connect-ed by means of Y-pipe and Y-reversing fl ap contained in it. This way it is possible to react quickly to the failure of the fan.Via a reversing system, the combustion air is transmitted to the respectively active burner side and the regener-ator where it is pre-heated to approx. 1250°C through heated refractory material and fl ows into the tank.

OXYGEN SUPPLY SKID FOR OXYFUEL FURNACES

The oxygen supply skid is used for the safety shutdown, regulation and measurement of the oxygen supply. The skid consists of two main oxygen lines. Each line is equipped with one safety shut-off valve and an oxy-

gen volumeter. The oxygen quantity of the single line is measured by the volumeter and then regulated through the downstream oxygen control valve to the required gas/oxygen ratio. Moreover, the purity of the oxygen is measured to ensure the optimal gas/oxygen ratio.

L E T ʻ S G O F U L L C I R C L E . W W W . H O R N G L A S S . C O M

0 4 / 2 0 2 0

P L A N N I N G + E N G I N E E R I N G

M A N U FA C T U R I N G S E R V I C E / I N S TA L L AT I O N +

S U P P O R T

L E T ’ S G O F U L L C I R C L E .

The key to HORN®’s extensive expertise in all fi elds of glass melting technology is the profound understanding of each detail within the entire process, making HORN® the specialist for technological progress and innovation for each aspect of a glass plant. In addition to its knowhow about individual elements such as furnaces, HORN® has expanded its services to become a one-stop supplier for turn-key plants. From initial planning to full operation – HORN® stands by you all the way.

L E T ʻ S G O F U L L C I R C L E . W W W . H O R N G L A S S . C O M

H O R N ® G L A S S I N D U S T R I E S A GB E R G S T R A S S E 2D - 9 5 7 0 3 P L Ö S S B E R G / G E R M A N Y

T E L . : + 4 9 9 6 3 6 / 9 2 0 4 - 0F A X : + 4 9 9 6 3 6 / 9 2 0 4 - 1 0

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