De-asphalter

De-asphalter bụ otu n'ime ụlọ nrụpụta mmanụ crude ma ọ bụ ihe nkwalite bitumen nke na-ekewa asphalt na akụkụ mpụta nke mmanụ crude ma ọ bụ bitumen.  Ebumnuche bụ isi nke nkewa ahụ bụ iji wepụ ihe ndị na-emerụ emerụ (asphaltenes, metals) site na nri nke ga-eme ka nkwụsị ngwa ngwa nke ndị na-emepụta ihe na-arụ ọrụ na mpaghara nhazi nke ala.  N'ime ime nke a, de-asphalter bụ nzọụkwụ mbụ n'ime usoro usoro na-eme ka nri dị ala dị ala na ngwaahịa ndị a nụchara anụcha dị elu..

A na-etinyekarị unit de-asphalter n'azụ ụlọ elu distillation ma nata nri site na ala (ihe fọdụrụ). Ọ na-abụkarị solvent de-asphalter unit, SDA. SDA na-ekewa asphalt na nri n'ihi na hydrocarbons dị mfe ga-agbaze aliphatic compounds mana ọ bụghị asphaltenes. Ihe a na-emepụta site na de-asphalt unit bụ mmanụ de-asfalted ("DAO") na asphalt. 

DAO sitere  propane de-asphalting nwere ogo kachasị elu ma ọ bụ nke kachasị ala, ebe iji pentane nwere ike okpukpu abụọ ma ọ bụ okpukpu atọ nke mmepụta sitere na nri dị arọ, mana na-efu mmetọ site na ọla na carbon fọdụrụ na-eme ka ndụ nke ihe na-emebi emebi. Ọ bụrụ na ihe na-agbanye mmiri bụ butane, a ga-akpọ ya butane de-asphalter ("BDA") ma ọ bụrụ na ihe ahụ na-agbasa mmiri bụ propane, a gaghị akpọ ya propane de-Asphalter ("PDA").

 Edensibia 

 Nnyocha nke ihe ndị fọdụrụ na mmanụ ala ahọpụtara site na US EPA
 Lubricants na Lubrication (Mbipụta nke Abụọ)

 Njikọ mpụga 

 Ihe na-agwọ mmiri
 Solvent de-asphalting nke vacuum residuum
 Asphalt e ji mee gas