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July 19, 2014

Ermolaeva V.A. The system of cleaning the air from welding fumes

The system of cleaning the air from welding fumes

Ermolaeva V.A.

The paper presents the process of resistance welding as a source of occupational and environmental hazards. The excess amount of single-time maximum MAC of manganese, carbon monoxide and nitrogen dioxide, making up the welding fumes, is identified. It is advisable to replace general ventilation with a small-sized flexible system of local exhaust ventilation. The main types of dust collection devices and their application are analyzed. The choice of the given cleaning method is reasoned. The waste gas dust-air mixture should be cleaned by an electrostatic precipitator built into the local ventilation system. The calculation of electrostatic gas purification level and the efficiency of the given ventilation system are given. The selection and calculation of additional equipment (including fans and ductwork) are completed. The payment plan for air pollutant emission is presented, as well as the economic analysis of systems providing production and environmental safety.

Keywords: resistance welding, local exhaust ventilation, electrostatic precipitator.

References

  1. Ermolaeva V.A., Kozikova I.V. Raschet teoreticheski neobhodimoj tolshhiny sloja i ob#ema katalizatora dlja ochistki gazovyh vybrosov slozhnogo sostava [Calculation of theoretically necessary thickness of a layer and volume of the catalyst for clearing of gas emissions of difficult structure] // Mashinostroenie i bezopasnost’ zhiznedejatel’nosti [Engineering industry and life safety], 2011, № 1. − P.4-7
  2. Bebneva S.I., Ermolaeva V.A. Problemy proizvodstvennoj bezopasnosti tehnologicheskogo processa poluchenija kisloroda iz vozduha [The problems of industrial process safety production of oxygen from the air] // Uspehi sovremennogo estestvoznanija [Advances in current natural sciences], 2011, № 7. − P.78.
  3. Ermolaeva V.A. Vlijanie tehnologicheskogo processa kontaktnoj svarki na sostav atmosfernogo vozduha [The effect of contact pressure welding process on the atmospheric air composition]// Mashinostroenie i bezopasnost’ zhiznedejatel’nosti [Engineering industry and life safety], 2013, № 4. − P.12-17.
  4. Kochev A.G. Ventiljacija promyshlennyh zdanij i sooruzhenij [Ventilation of industrial buildings] − Nizhny Novgorod: NNGASU Edition, 2011.
  5. Universal’nye jelektrostaticheskie fil’try JeFVA dlja ulavlivanija svarochnyh i masljanyh ajerozolej [Department EFVA electrostatic filters for trapping and welding an oil aerosols] / http://www.elstat.ru.

«Engineering industry and life safety» №2 (20), 2014. Pages: 5-9

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Ermolaeva Vera Anatoljevna – Ph.D., Murom Institute of Vladimir State University, Murom, Russia. E-mail: ermolaevava2013@mail.ru



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