비의류제품

proteccion de acero al carbono en plantas g.s. (girlder sulfide) formacion de la capa protectora de sulfuros de hierro sobre superficies cubiertas de cascarilla de fabricacion. pte. 4. (carbon steel protection in g.s. (girlder sulfide) plants. iron sulfid

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 528
this work describes the assays aimed to passivate the steel carbon of the process pipings. this steel is marked by the astm a 333 g6 and is chemically similar to those of isotopic exchange towers which corrode in contact with in-water hydrogen sulfide solutions forming iron sulfide protective layers. the differences between both materials lie in the surface characteristics to be passivated. the steel of towers has an internal side covered by paint which shall be removed prior to passivation. the steel's internal side shall be covered by a film formed during the fabrication process and constituted by calcinated wastes and iron oxides (magnetite, hematite and wustite). this film interferes in the formation process of passivating layers of pyrrhotite and pyrite. the possibility to passivate the pipes in their actual state was evaluated since it would result highly laborious and expensive to eliminate the film (atomindex citation 23:052603)
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