Abantu abaningi abakaze bezwe nge-triethyl aluminium (TEAL), kodwa idlala indima ebalulekile ekwakhiweni kwemikhiqizo abantu abangayibona futhi bayithinte nsuku zonke. I-TEAL iyinhlanganisela ye-organoaluminium (ikhabhoni ne-aluminium) esetshenziselwa ukwenza amapulasitiki aminyana kakhulu futhi angaminyana kancane, irabha, imithi, ama-semiconductors, nama-polymer adingekayo “kotshwala obunamafutha” ezintweni zokuhlanza nezihlanzisi zezandla.
Ama-polymers asebenza ngokuhlanganisa ama-molecule ngamanye (noma ama-monomers) abe amaketanga amakhulu angasetshenziswa ukwenza imikhiqizo. Kuma-polymers we-organic, umgogodla wala maketanga yi-carbon kanye ne-organometallic compounds, njenge-TEAL. Lezi zinhlanganisela zihlinzeka ngekhabhoni edingekayo ekuphenduleni kwe-polymerization. Ekukhiqizeni amanye amapulasitiki avamile, inhlanganisela ye-TEAL ne-titanium tetrachloride ingakhiqiza ama-catalyst e-Ziegler-Natta. Lesi yisici esidingekayo ukuze kuqalwe ukusabela kwamakhemikhali okuholela ku-olefin polymerization enomugqa ophezulu ukukhiqiza i-polyethylene ne-polypropylene.
Noma iyiphi imboni egcina noma ecubungula i-TEAL kufanele inake ukuntengantenga kwekhemikhali. I-TEAL iyi-pyrophoric, okusho ukuthi izosha uma ibekwe emoyeni. Eqinisweni, ukusabela okuqinile kwaleli khemikhali ne-cryogenic liquid oxygen kungesinye sezizathu zokusetshenziswa kwayo njengesibasi serokhethi sokuqala sohlelo lwe-SpaceX. Into eyodwa nje ongayisho: ukunakekelwa okwedlulele kufanele kuthathwe lapho uphatha le nto. Kubakhiqizi bepulasitiki abapompa leli khemikhali nsuku zonke, amaphampu aklanyelwe lolu hlelo lokusebenza kuphela angasetshenziswa. Ukunakekelwa okwengeziwe kufanele kuthathwe ukuze kuqinisekiswe ukuthi i-catalyst ayivezwa emoyeni ngesikhathi sokucubungula.
Lapho ukhetha iphampu yezinhlelo zokusebenza ze-TEAL, ukunemba kubaluleke kakhulu. Inqubo yamakhemikhali ngayinye ilandela ifomula ethile. Ukujova izithako eziyisihluthulelo eziningi kakhulu noma ezincane kakhulu ngeke kuveze imiphumela oyifunayo. Amaphampu amamitha angajova inani elidingekayo lamakhemikhali (ngokunemba kuka-+/- 0.5%) ayinketho yokuqala kubakhiqizi bamakhemikhali bezicelo ze-TEAL.
Ngokuphathelene nokugeleza nokucindezela, i-TEAL ivamise ukukalwa ngevolumu engaphansi kwamalitha angu-50 ngehora (gph) kanye nokucindezela okungaphansi kwamaphawundi angu-500 ngegeji ye-intshi yesikwele (psig), engaphakathi kobubanzi bamaphampu amaningi okulinganisa. Ingxenye ebalulekile yenqubo ye-polymerization ukuhambisana ngokugcwele nemithethonqubo ye-American Petroleum Institute (API) 675, ukunemba nokuthembeka. I-TEAL incamela amaphampu ahlanganiswe ukuphela koketshezi lwensimbi engagqwali angu-316, ivalvu yebhola engu-316 LSS nesihlalo, kanye ne-polytetrafluoroethylene (PTFE) diaphragm ukwelula impilo yaleli khemikhali eyingozi.
Ukuphepha nokwethenjwa Iphampu yokulinganisa i-diaphragm (HAD) eqhutshwa ngamanzi ingasebenza ngokwethembeka amashumi eminyaka futhi inesikhathi eside phakathi kwesondlo (MTBR). Lokhu kubangelwa ikakhulukazi umklamo wepompo. Ngaphakathi ekugcineni kwe-liquid, ivolumu kanye nokucindezela koketshezi olusebenzisa amanzi ohlangothini olulodwa lwe-diaphragm kuyalingana nokucindezela koketshezi lwenqubo ngakolunye uhlangothi, ukuze i-diaphragm igcine ibhalansi elinganayo phakathi koketshezi olubili. I-piston yepompo ayilokothi ithinte i-diaphragm, ihambisa uwoyela we-hydraulic ku-diaphragm, ibangele ukuthi igobe ngokwanele ukuhambisa inani elidingekayo loketshezi lwenqubo. Lo mklamo uqeda ukucindezeleka ku-diaphragm futhi unokuphila kwesevisi ende.
Nakuba ubude besikhathi bubalulekile, kufanele kubekwe kuqala ukwethembeka ngaphandle kokuvuza. Amaphampu okulinganisa ezinhlelo ze-TEAL kufanele afakwe ama-valve okuhlola abalulekile ukuze kuncishiswe izindlela zokuvuza ezingase zibe khona. I-4-bolt tie rod yangaphandle inikeza uxhumano lwepayipi oluqinile futhi oluthembekile. Isikhathi eside, ukudlidliza kwangaphandle kokuxhumeka kwepayipi kungabangela ukuvuza kanye nezinkinga ezinkulu zepompo.
I-diaphragm ye-PTFE inomlando omuhle wokupompa i-TEAL. Lawa maphampu kufanele abe ne-diaphragm ekabili enomsebenzi wokuthola ukuvuza, njengegeji yokucindezela noma inhlanganisela yegeji yokucindezela futhi ashintshe ukuze axwayise ngezinkinga ezingaba khona.
Njengesendlalelo sesithathu sokuvikela, ingubo yokulala ye-nitrogen ku-hydraulic casing kanye ne-gearbox izovimbela uketshezi lwe-pyrophoric ukuthi lungavezwa emoyeni.
Ukunakekela Ivalvu yokuhlola empompini yokulinganisa, esebenza ngemivimbo engu-150 ngomzuzu, izinsuku ezingama-365 ngonyaka, izovula futhi ivale izikhathi ezingaphezu kwezigidi ezingu-70 ngonyaka. Ikhithi yokulungisa ejwayelekile noma ye-KOP (gcina ukumpompa) ihlinzeka ngezingxenye ezidingekayo esikhundleni sevalvu yokuhlola iphampu, ehlanganisa nama-diaphragm, ama-O-rings nama-seal. Njengengxenye yokugcinwa kokuvimbela, kufanele futhi kubandakanye ukushintsha uwoyela we-hydraulic wepompo.
Isidingo samapulasitiki sezinto zokuzivikela (i-PPE), okuhambisana nezintengo eziphansi zikawoyela ukuze kwehliswe izindleko zempahla eluhlaza, kusho ukwanda kokukhiqizwa kanye nesidingo sama-catalysts aguquguqukayo amamitha (afana ne-TEAL).
U-Jesse Baker ungumholi wezohwebo we-Pulsafeeder's sales, ukuphathwa kwemikhiqizo, ubunjiniyela kanye namaqembu okusiza amakhasimende. Ungaxhumana naye ku-jbaker@idexcorp.com. Ukuze uthole olunye ulwazi, sicela uvakashele ku-www.pulsafeeder.com.
Isikhathi sokuthumela: Jan-20-2021
