Auxiliary fuel firing

Auxiliary fuel firing Combustion of an auxiliary fuel to provide additional heat to an incinerator in order to either dry or Ignite the waste material and to maintain ignition, to ensure complete combustion of solids, liquids, and gases in the incinerator. 

Fossil fuel-fired auxiliary boiler(s) from adjacent areas... 

Based on exposure data from previous AFIERA studies, fuel tank repair operations of single-point-entry fuel bladders containing fire suppressant foam were determined as the worst-case exposure situations. The highest exposure results were measured in operations performed inthe C-130 Hercules transport aircraft s auxiliary fuel tanks. 

Depending on the mix of waste being burnt, the incinerator may or may not require auxiliary firing from fuel oil or natural gas. 

Incineration. Incinerators were discussed in Sec. 11.1. When incinerators are used to treat gaseous pollutants in relatively low concentration, auxiliary firing from fuel or other waste material normally will be necessary. The capital and operating costs may be high. In addition, long duct lines are often necessary. 

The chamber is externally insulated and clad. Combustion equipment for solid fuel may be spreader or traveling-grate stokers or by pulverized fuel or fluid bed. Oil and gas burners may be fitted either as main or auxiliary firing equipment. The boilers will incorporate superheaters, economizers and, where necessary, air preheaters, grit arresters, and gas-cleaning equipment to meet clean air legislation. 

Supplementary fired HRSG. Supplementary (or auxiliary) bring raises the temperature by bring fuel to use a portion of the oxygen in the exhaust. Supplementary bring uses convective heat transfer, and temperatures are limited to a maximum of around 850°C by ducting materials. 

As mentioned above, LHV of three samples R1 - > R3 is higher than 10 MJ/kg fuel therefore, the combustion does not need auxiliary firing. The small amount of fossil fuels for start-up and shutdown of the procedures is not taken in to account. It means... 

Jettisonable Airplane Fuel Tank Bombs. Another type of US incendiary bomb was the coverted auxiliary airplane fuel tank of 75 to 300 gallon capacity. They were filled with jellied gasoline and provided with a fuse and an igniter. Such bombs spread fire over a large area and were very effective against Japanese targets (Ref 10, p 239 Ref 15, part IV)... 

Coastal utilities have been major consumers of products derived from imported crudes. East coast utility fuels have been based on Venezuelan and Middle East crudes while the West coast has obtained much of its fuel from Indonesia. There are a number of reasons why it would be difficult to convert these plants to coal firing. Auxiliary facilities such as storage areas, rail sidings, and unloading and conveying equipment are no longer in place to handle coal. It is even more significant that the land on which these facilities were located has been sold or used for other utility purposes. As a result, scrubbers could not be installed at these sites to allow for sulfur dioxide control. 

Partial oxidation ammonia plants have the same emission sources except for the primary reformer flue gas. The plants have an auxiliary boiler to generate steam for power production and fired heaters, which on account of the sulfur content of the fuel oil release a flue gas containing S02 (< 1500 mg/m3). Other possible emissions are H2S (< 0.3 ppmv), CO (30 ppmv) and traces of dust. The NO, content of the flue gas depends on the configuration of the auxiliary boiler and on the extent electric power generation on the site as opposed to outside supply. The total NO, emission per tonne of product may be somewhat lower than for steam reforming plants. 

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