Sử dụng MTBE để tăng trị số octan của xăng thuận lợi và thách thức

112 Sd dyng MTBE dl ting trj so octan cua xing thuan lgi vi thachjhd£ sty DUNG MTBE DE TANG TRI SO OCTAN CUA XANG THUAN Lgfl VA THACH THU''''C Dang Hdng Van, Nguyen Ngge Lan, Nguyen Phuong Hai Tdng cdng[.]

112 Sd dyng MTBE dl ting trj so octan cua xing: thuan lgi vi thachjhd£ sty DUNG MTBE DE TANG TRI SO OCTAN CUA XANG: THUAN Lgfl VA THACH THU'C Dang Hdng Van, Nguyen Ngge Lan, Nguyen Phuong Hai Tdng cdng ty Ddu Viet Nam TOM TAT MTBE (Methyl Tertiary Butyl Ether) cd tri sd octan cao, nhiet dp sdi thdp vd dp sudt hai bdo hod trung binh MTBE duac sic dung rpng rdi cdc nhd mdy lge ddu di pha vdo xdng nhdm tdng tri sd octan Ngodi viec cdi thien dp sudt hai bao hod, tinh chdt chung cdt cua xdng, MTBE cdn ldm gidm cdc chdt d nhiim thdi dpng ca Do MTBE Id thdnh phdn pha trpn xdng rdt tdt nen cd the giup cdc nhd mdy lge ddu tdng sdn lugng vd chdt lugng xdng md khdng cdn ddu tu cdc phdn xudng cdng nghi che bien sdu Khi sir dung MTBE pha xdng ciing dgt mpt sd vdn di vi mdi trudng vi MTBE di hod tan nuac han so vdi cdc thdnh phdn khdc cua xdng nen nd cd xu thi lan nhanh ddt bi rd ri nen cd thi gdy d nhiim nude ngdm MTBE cd dp phdn huy sinh hgc thdp hom nen thdi gian tdn tgi mdi trudng lau han MTBE cd miii vi khd chiu vd ldm cho nude khdng thi sic dung dugc cd a ndng dp rdt thdp MTBE dugc cdc nude khdng xip vdo chdt dpc hgi hoae gdy ung thu vd khdng dnh hudng tdi sice khoe ngudi ndi chung a cdc diiu kien binh thudng Hiiu ro nhirng im diim vd nhugc diem ciia MTBE, chiing ta cdn cd cdc biin phdp kiim sodt chat che ty li MTBE xdng nhap khau vd pha chi nude Cdc biin phdp ky thuat thiit ki vd van hdnh cdc kho chira xdng cdn dugc rd sodt vd quy dinh chat che di bdo ddm tdng chica xdng an todn Di tdng lugng xdng cd tri sd octan cao, ciing nen xem xet gidi phdp xir dung MTBE pha xdng cdc nhd mdy lge ddu md chung ta dang chudn bi xdy dung DAT VAN DE MTBE la mdt eter cd trj sd octan cao Tir nam 1973 hgp chit oxygenat dugc sir dyng rdng rai cac nha may lge dau de pha vao xang nhim tang trj sd octan MTBE dugc san xuat tir metanol va izobutylen Cac nguyen lieu dugc san xuit tir cac nha may Igc dau hoae hoa diu Viec sir dung MTBE pha xang cd nhilu thuan lgi nhiing cung khdng it thach thirc cac yeu cau cang cao ve mdi trudng TINH CHAT VA VAI TRO CUA MTBE TRONG VIEC PHA XANG Tinh chat va vai tro ciia MTBE viec pha xang MTBE la mdt eter gdc hydrocarbon, ed trgng lugmg phan tir la 88g/mol, tytrgng d 15*'C la 0,7458, ap suit hoi bao hoa d 25°C la 33,4Kpa, nhiet sdi thip (58°C), it boa tan nude MTBE la mdt chit Idng trong, cd nhdt thip, cd miii va vj cay hang V | mat hoa Tuyin tap bio cio Hgi nghj KHCN "30 nim Dau Viet Nam: Cff hgi mdi, thich thde mdi" H^ hgc, MTBE la mdt eter hii^ co chiia 18,2% oxygen va ed tinh chat vat ly gidng nhu cac chit Idng hydrocarbon khae Thanh phan va tinh chat ciia MTBE dugc trinh bay Bang I Bang 1: Thanh phan cua MTBE Thdnh phdn %OWt MTBE Methanol Tert Butyl Alcohol Hydrocarbon C4 Hydrocarbon C5 - C% 98,2 0,2