ENERGY|oil industry|oil industry
- guma Reference 'guma', Foras na Gaeilge, Foclóir Eolaíochta. An Gúm, Baile Átha Cliath, 1994. ;Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- Harz
- de
- Definition Gemisch aus organischen Stoffen mit glasartig-amorphen oder festflüssigen Eigenschaften Reference "Lexikon wissen.de > Harze, http://www.wissen.de/lexikon/harze (14.7.2017)"
- gum
- en
- Definition non-volatile solid or semi-solid substance apt to be deposited by some petroleum products when stored for long periods or heated, and formed by the oxidation of certain of their constituents Reference "'gum, n.2', Oxford English Dictionary http://www.oed.com/view/Entry/82499?rskey=QyrULj&result=2&isAdvanced=false#eid [17.10.2017]"
- Comment Gums are usually formed as unwanted side products of hydrocarbons' reactions (processing), and preferably get separated from products in distillation columns (so-called bottom fractions or bottom cuts). However, often they deposit on catalyst or reactor and piping walls (due to lower local temperatures) and cause equipment fouling. This fouling (deposits) has to be removed by either mechanical cleaning (maintenance works) or dissolving (preferably in heated feed and later removed from it in the distillation column) or are combusted during decoking (together with coke - actually gums and tars are usually precursors for coke formation).Reference: European Commission. Directorate-General for Environment. Correspondence dated 13.6.2017
- gomme
- fr
- Definition résidu visqueux, collant, de couleur foncée, qui se forme à l'usage par oxydation des huiles de graissage Reference "COM-FR, d'après le Grand dictionnaire terminologique, http://gdt.oqlf.gouv.qc.ca [3.8.2017]"