LEL Lower Explosive Limit

Low flow, low concentration streams are best handled by a catalytic recuperative oxidizer. When the concentration of the stream is between 15% to 20% LEL (Lower Explosion Limit) then both a catalytic recuperative or thermal recuperative is the best technologies. For process streams between 20% to 25% LEL then thermal recuperative is the preferred solution. 

UEL = upper explosive limit LEL = lower explosive limit... 

LEL Lower explosive limit in air, expressed as a percentage by volume. 

Improvement Item LEL (lower explosive limit) and standard 02 levels monitored by ACHMT, indicating crash scene impact only. Chlorine could have been indicated with proper monitoring equipment. ACHMT was not effectively integrated into Haz-Mat operations. Decontamination areas were not monitored due to lack of Haz-Mat support at decontamination locations. 

LEL Lower Explosive Limit. The lowest concentration of gas or vapor by percent of volume in air that will burn or explode if an ignition source is present at ambient temperatures. The LEL is constant up to 250 degrees L. 

LEL - Lower Explosive Limit UEL - Upper Explosive Limit... 

LEL Lower Explosion Limit the minimum concentration of a chemical in air at which detonation can occur. 

VOC concentration monitors which control air flow to each dryer stage to maintain the dryers at 25-40% of the LEL (lower explosive limit)... 

Table 1.1 LEL (Lower Explosive Limit) and UEL (Upper Explosive Limit) values for gas-air mixtures, valid for a total pressure of 1.013 105Pa and a temperature of +20°C (= +68°F)...

Adsorption capacity for toluene is 0.1751b toluene/lb activated carbon Operation is at 10% of LEL (lower explosivity limit) for toluene in the exit air from printer LEL for toluene = 1.2%... 

In 1978, the EPA established Control Techniques Guidelines (CTG), leading to requests for statements of Reasonably Attainable Control Technology (RACT). The goal of the EPA was to reduce VOC emissions to set limits or to achieve an 85% reduction of existing VOC. VOC levels were to be reduced by one or more of four methods adjustment of LEL (lower explosive limit) of curing ovens solvent scrubbing solvent incineration and carbon adsorption of solvents. 

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