burners test rig

November 2009 edition

International Combustion Equipment S.r.l. Website : www.it-ice.com - E-mail : [email protected]

Burners • Elevated/Ground flares • Ignition / Flame detection systems • Water bath heaters • BMS systems / fuels skids

Horizontal cylindrical test heater

Box test heater




INTRODUCTION Constant updates on the production program is the basis to be constantly competitive.

Moreover, stringent regulations on pollutant emissions in flue gases made imperative to lower NOx and CO levels in burner performance.

Following this principle ICE, which has to goal to produce state of the art combustion equipment, built its own burners test rig.

Our company has at its disposal a test area placed aside its production facility, in city of Cremosano (CR)

A broad range of burners can be tested, ranging from standard round flame to flat flame shapes, from gas only to multiple firing burners.

Also radiant wall burners, special burners for incinerators burners and firing tube burners can be tested.

A number of variables can be recorded during the tests such as:

• Flame length and shape

• Emissions (NOx, CO, CO2, O2 etc)

• Temperature in combustion chamber

• Noise levels

• Flame stability at different draft and excess air

It is also possible to test ancillary equipment such as pilot burners, flame detection equipment (ionisation amplifiers, UV scanners etc.) or ignition devices.

COMBUSTION CHAMBER CHARACTERISTICS Max. heat release of burners to be tested is approx. 4,0 MMKcal/hr.

Our furnace is horizontal cylindrical, with a length of 8,5m and external dia of 2,5m with wall thickness of 6 mm.

Chimney is made of three section for a total height of 8,5 m. with a draft at burner level of approx. 5mm.w.c.

To increase draft an electric fan with injector (placed inside chimney) can be added to reach 15 mmwc.

Flame monitoring of length, shape and stability can be achieved by using one of the 9 sight ports provided on combustion chamber (6 on sides). 2 in front and 1 in the back).

Sample ports are available for connection with flue gas analyzer or temperature transmitter

Heater wall is insulated with 100mm of ceramic fibre and heater floor with 200mm of concrete cement to withstand a maximum continuous temperature of 1200°C.

To help simulating site conditions (heaters with radiant process pipes) a cooling system with water coil gas been added.

This allow test at site temperature instead of higher temperature normally reached in furnaces without heat transfer.

Recirculation of water inside cooling system is guaranteed by an electric pump connected with a recirculation bath of 12m

3.

View of burners test rig




FUEL COMPOSITION & VARIABLES For burner tests a wide range of gaseous & liquid fuels can be used :

• CH4 (natural gas – methane)

• C3H8 (L.P.G.)

• H2 (hydrogen)

• CO / CO2 (carbon monoxide/dioxide)

• O2 (oxygen)

Any other mixture is available upon request.

• Heavy naphta

• Diesel Oil

• Liquid streams

On fuels, following variables can be measured :

• Gas flowrate by means of a metering station with flowmeters.

• Fuel gas pressure near burner by means of a pressure gauges.

Combustion air pressure drop thru the burner is measure by means of water column gauges.

Flue gases composition will be measured by vol percentage of O2, CO, NO and NO2 by GREENLINE MK2 flue gas analyser equipped with electrochemical amperometric cells.

The reading point is located at the end of the combustion chamber, before the connection to the stack.

The temperature of the flue gases will be measured by Cr/Al thermocouple and temperature digital gauge from sample point of combustion chamber.

TEST RIG DETAILS

The test plant used for gas & oil burner demonstration includes near all equipment necessary to realize the requested working conditions:

• Combustion chamber, complete of stack and water coil system and recirculation pump to control temperature (limited, due to ceramic fibre internal lining, to 1200°C max.)

• Double tank system for water cooling.

• Front plate for burner housing.

• Gasoil boiler to produce steam at 10 barg and

185°C capable o 250 k/h of satured steam which is used as atomising medium with oil burners and gasification system system for CH4 and C3H8 packages.

• Package of gas bottles for CH4 / H2 / LPG with

• pressure reducer and steam heater.

• Various sizes of combustion air fans (for forced draught burners).

• Air fan on stack to induce draft in combustion chamber.

Due to the characteristics of combustion chamber, the burner can be tested only in horizontal position.

The flame shape and dimensions can be easily checked through the existing sight ports (nr. 6 all around).

The air pressure drop across the burner could be measured by differential pressure between burner windbox and combustion chamber.

Staged fuel burner gas Heavy Oil flame Raw burner gas flame




International Combustion Equipment Srl Office: Via Forlanini, 52 – 20043 Arcore (MI) Italy Tel. ++39 039 61.80.445 r.a. Fax ++39 039 61.68.84

Workshop: Via degli Artigiani 25/27 – 26010 Cremosano (CR) Italy – Tel. ++39 0373 27-36.54 – Fax ++39 0373 29.12.59 Website: www-it-ice.com – e-mail : [email protected]

Horizontal cylindrical combustion chamber Vertical box combustion chamber

Gas metering equipment

H2 / C3H8 / CH4 gas bottles CO2 gas bottle and vaporizer

burners test rig

Documents

pilot burners

incinerators burners

special burners

tube burners

flame length

radiant wall burners

view of burners test

broad range of burners