what are the exhaust gases from gas boilers

Measurement of O2 Concentration in Exhaust Gases from ...

Exhaust gases from these boilers contain a large quantity of dust (10 to 30 g/Nm3) and flow very fast as the result of the large volume of air being blown into the boiler. For oxygen measurement in large ducts a probe with a long insertion length is used. Solution Details Field Data. Process conditions

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Exhaust Gas Steam Boiler

Exhaust Gas Boilers also known as Exhaust Gas Economizers with extended heating surface used for waste heat recovery in motor ships. A diesel engine loses approximately 30% of the energy to the exhaust gases. A turbocharger recover some of it but there is

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Exhaust Gas Steam Boiler

Exhaust Gas Boilers also known as Exhaust Gas Economizers with extended heating surface used for waste heat recovery in motor ships. A diesel engine loses approximately 30% of the energy to the exhaust gases. A turbocharger recover some of

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Flue Gas - an overview | ScienceDirect Topics

Flue gas (sometimes called exhaust gas or stack gas) is the gas that emanates from combustion plants and which contains the reaction products of fuel and combustion air and residual substances such as particulate matter (dust) sulfur oxides nitrogen oxides and carbon monoxide (Table 3.7). When burning coal and/or waste materials hydrogen chloride and hydrogen fluoride may be present in the flue gas

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why the temperature of boiler exhaust gases should be ...

The flue gas exit tempera ture from a boiler is usually maintained at a minimum of 200 o C so that the sulphur oxides in the flue gas do not condense and cause corrosion in heat transfer surfaces. When a clean fuel such as natural gas LPG or gas oil is used the economy of heat recovery must be worked out as the flue gas temperature may be well below 200 o C. Boiler Questions and Answers Marine steam

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Flue Gas Oxygen Measurement - GasLab.com

The exhaust gases are the result of burning fuel inside a furnace oven boiler or steam generator. Wherever combustion occurs there will be exhaust gases. Measuring the oxygen level in the exhaust gas is an indicator of the efficiency of the combustion process.

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IJIN MARINE LIMITED: Types of Exhaust Gas Boiler (EGB ...

Sep 28 2013 · An Exhaust Gas Boiler is a type of heat recovering system on ships which allows the exhaust heat of the main engine to produce steam while going out in the atmosphere. Every system which is operated at high temperature always has a risk of fire. This applies to EGB which has the inlet temperature of exhaust gases @ 300-400 deg. C.

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Boiler Combustion | CleanBoiler.org

Combustion of standard fossil fuels (natural gas and ASTM Grade Oil) in commercial and industrial boilers results in the following nine emissions; carbon dioxide nitrogen oxygen water carbon monoxide nitrogen oxide sulfur oxides volatile organic compounds and particulate matter.

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Exhaust gas flue gas - Wartsila.com

Exhaust gas flue gas. The gas which leaves a system after energy exchange or conversion process e.g. combustion gases from a diesel engine a boiler a gas turbine or an incinerator. The exhaust gases of diesel engines mainly consist of nitrogen carbon dioxide (CO2) and water vapour with smaller quantities of carbon monoxide (CO) sulphur oxides (SOx ) and nitrogen oxides (NOx) partially reacted and non

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How gas condensing technology works | Viessmann

To protect the boiler itself and the flue gas system from this acidic steam older boilers direct the flue gases outside. Depending on the heating technology the exhaust gas temperature can be up to 200 degrees Celsius. Condensation of the water vapour in the exhaust gases is thus deliberately prevented. The recovery of the hidden heat

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IJIN MARINE LIMITED: Types of Exhaust Gas Boiler (EGB ...

Sep 28 2013 · An Exhaust Gas Boiler is a type of heat recovering system on ships which allows the exhaust heat of the main engine to produce steam while going out in the atmosphere. Every system which is operated at high temperature always has a risk of fire. This applies to EGB which has the inlet temperature of exhaust gases @ 300-400 deg. C.

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Flue Gas Oxygen Measurement - GasLab.com

The exhaust gases are the result of burning fuel inside a furnace oven boiler or steam generator. Wherever combustion occurs there will be exhaust gases. Measuring the oxygen level in the exhaust gas is an indicator of the efficiency of the combustion process.

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Exhaust Gas Boilers And Economisers for Marine Machinery ...

There is about 10% water vapour in exhaust gas and also sulphur products and this can lead to suphuric acid forming which has a dew point of 140°C. The amount of exhaust gas energy used in waste heat recovering systems is about 5 ­ 10 %. Summarized below

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