ʻAʻole i lohe ka poʻe he nui i ka triethyl aluminika (TEAL), akā he hana koʻikoʻi ia i ka hana ʻana i nā huahana i hiki i nā kānaka ke ʻike a hoʻopā i kēlā me kēia lā. ʻO TEAL kahi hui organoaluminum (carbon a me aluminika) i hoʻohana ʻia no ka hana ʻana i nā plastik kiʻekiʻe a me nā haʻahaʻa haʻahaʻa, ka lāʻau lapaʻau, nā semiconductor, a me nā polymers i koi ʻia no ka "fatty alcohol" i nā mea holoi a me nā mea holoi lima.
Hana nā Polymers ma ka hoʻohui ʻana i nā molekala pākahi (a i ʻole nā monomers) i nā kaulahao nui aʻe i hiki ke hoʻohana ʻia e hana i nā huahana. I loko o nā polymers organik, ʻo ka iwi kuamoʻo o kēia mau kaulahao he kalapona a me nā pūhui organometallic, e like me TEAL. Hāʻawi kēia mau pūhui i ke kalapona e pono ai no ka hopena polymerization. I ka hana ʻana o kekahi o nā plastics maʻamau, hiki i ka hui pū ʻana o TEAL a me titanium tetrachloride ke hana i nā mea hoʻoheheʻe Ziegler-Natta. ʻO kēia ka mea e pono ai e hoʻomaka i kahi hopena kemika e alakaʻi i ka polymerization olefin linear nui e hana i ka polyethylene a me ka polypropylene.
ʻO kēlā me kēia hale hana e mālama ai a i ʻole kaʻina hana TEAL e nānā pono i ka volatility o ka kemika. ʻO ka TEAL he pyrophoric, ʻo ia hoʻi, e ʻā ia ke ʻike ʻia i ka ea. ʻO ka ʻoiaʻiʻo, ʻo ka hopena ikaika o kēia kemika me ka oxygen wai cryogenic kekahi o nā kumu o kona hoʻohana ʻana ma ke ʻano he kumu hoʻoheheʻe rocket mua o ka papahana SpaceX. Hoʻokahi wale nō mea e ʻōlelo ai: pono e mālama pono i ka wā e lawelawe ai i kēia mea. No nā mea hana ʻilika nāna e puhi i kēia kemika i kēlā me kēia lā, hiki ke hoʻohana ʻia nā pamu i hoʻolālā ʻia no kēia noi. Pono e mālama pono i ka ʻike ʻole ʻana o ka catalyst i ka ea i ka wā e hana ai.
Ke koho ʻana i kahi pamu no nā noi TEAL, ʻo ka pololei ka mea nui loa. Hoʻopili kēlā me kēia kaʻina hana kemika i kahi ʻano kikoʻī. ʻAʻole loaʻa nā hopena i makemake ʻia i ka hoʻokomo ʻana i nā mea nui a liʻiliʻi paha. ʻO nā pāpaʻi ana i hiki ke hoʻokomo pono i ka nui o nā kemika i makemake ʻia (me ka pololei o +/- 0.5%) ke koho mua no nā mea hana kemika i nā noi TEAL.
E pili ana i ke kahe a me ke kaomi, ua ana ʻia ʻo TEAL me ka nui o lalo o 50 galani i kēlā me kēia hola (gph) a me ke kaomi ʻana ma lalo o 500 paona i kēlā me kēia ʻīniha kuʻiha (psig), aia i loko o ka laulā o ka hapa nui o nā pamu ana. ʻO ka ʻāpana koʻikoʻi o ke kaʻina hana polymerization ʻo ka hoʻokō piha ʻana i nā lula o ka American Petroleum Institute (API) 675, pololei a me ka hilinaʻi. Makemake ʻo TEAL i nā pamu i haku ʻia me 316 mea ʻili wai wai, 316 LSS pahu pōlele a me ka noho, a me polytetrafluoroethylene (PTFE) diaphragm e hoʻolōʻihi i ke ola o kēia kemika weliweli.
Ka palekana a me ka hilinaʻi Hiki i ka hydraulically driven diaphragm (HAD) metering pump ke hana me ka hilinaʻi no nā makahiki he nui a lōʻihi ka manawa ma waena o ka mālama (MTBR). ʻO ka mea nui kēia ma muli o ka hoʻolālā ʻana o ka paila. I loko o ka hopena wai, ua like ka nui a me ke kaomi o ka wai hydraulic ma kekahi ʻaoʻao o ka diaphragm me ke kaomi o ka wai kaʻina hana ma kekahi ʻaoʻao, i mālama ai ka diaphragm i kahi kaulike kaulike ma waena o nā wai ʻelua. ʻAʻole hoʻopā ka piston o ka paila i ka diaphragm, hoʻoneʻe ia i ka ʻaila hydraulic i loko o ka diaphragm, e hoʻopololei ʻia e hoʻoneʻe i ka nui o ka wai kaʻina hana. Hoʻopau kēia hoʻolālā i ke koʻikoʻi ma ka diaphragm a ʻoi aku ka lōʻihi o ke ola lawelawe.
ʻOiai he mea nui ka lōʻihi, pono e hāʻawi ʻia ka mea nui i ka hilinaʻi me ka ʻole o ka leakage. Pono e hoʻolako ʻia nā pāpaʻi ana no nā noi TEAL me nā kīwaha hoʻokaʻawale e hōʻemi i nā ala leak. Hāʻawi ke koʻokoʻo pili 4-bolt waho i kahi pilina paipu paʻa a hilinaʻi. No ka manawa lōʻihi, hiki i ka haʻalulu o waho o ka pilina paipu ke hoʻoulu i ka leakage a me nā pilikia pahū nui.
ʻO ka diaphragm PTFE kahi moʻolelo maikaʻi i ka puhi ʻana i ka TEAL. Pono e loaʻa i kēia mau pamu he diaphragm pālua me ka hana ʻike leak, e like me ke ana kaomi a i ʻole ka hui pū ʻana o ke ana kaomi a hoʻololi e ʻōlelo aku i nā pilikia e hiki mai ana.
Ma ke ʻano he kolu o ka pale o ka pale, ʻo ka pānaʻi nitrogen i loko o ka pahu hydraulic a me ka pahu pahu e pale i ka wai pyrophoric mai ka ʻike ʻana i ka lewa.
Maintenance ʻO ka pahu hoʻopaʻa ma luna o ka pauma ana, e holo ana ma 150 paʻi i kēlā me kēia minuke, 365 mau lā o ka makahiki, e wehe a pani ʻia ma mua o 70 miliona mau manawa i ka makahiki. Hāʻawi ka pahu mālama maʻamau a i ʻole KOP (hoʻomau i ka hoʻomaʻamaʻa ʻana) i nā ʻāpana e pono ai ke pani i ka valve check o ka pama, aia pū kekahi diaphragms, O-rings a me nā sila. Ma ke ʻano o ka mālama pale ʻana, pono e komo pū me ka hoʻololi ʻana i ka aila hydraulic o ka paila.
ʻO ke koi ʻana i nā plastics no nā lako pale pilikino (PPE), i hui pū ʻia me nā kumukūʻai aila haʻahaʻa e hōʻemi i nā kumukūʻai maka, ʻo ia ka hoʻonui ʻana i ka hana a me ka pono o nā catalysts volatile metered (e like me TEAL).
ʻO Jesse Baker ke alakaʻi pāʻoihana o nā hui kūʻai aku, hoʻokele huahana, ʻenekinia a me nā hui lawelawe o Pulsafeeder. Hiki iā ʻoe ke kelepona iā ia ma jbaker@idexcorp.com. No ka 'ike hou aku, e 'olu'olu e kipa www.pulsafeeder.com.
Ka manawa hoʻouna: Jan-20-2021
