{"id":1359,"date":"2024-11-12T15:22:22","date_gmt":"2024-11-12T07:22:22","guid":{"rendered":"https:\/\/www.tflequip.com\/?p=1359"},"modified":"2024-11-12T15:22:22","modified_gmt":"2024-11-12T07:22:22","slug":"how-to-select-the-acid-and-alkali-resistant-pump-model-according-to-the-conveying-medium","status":"publish","type":"post","link":"https:\/\/www.tflequip.com\/lv\/how-to-select-the-acid-and-alkali-resistant-pump-model-according-to-the-conveying-medium\/","title":{"rendered":"K\u0101 izv\u0113l\u0113ties sk\u0101b\u0113m un s\u0101rmiem iztur\u012bga s\u016bk\u0146a modeli atkar\u012bb\u0101 no transport\u0113jam\u0101s vides?"},"content":{"rendered":"

\u0136\u012bmiskaj\u0101 r\u016bpniec\u012bb\u0101 bie\u017ei sastopamie kod\u012bgie \u0161\u0137idrumi ir s\u0113rsk\u0101be, sl\u0101pek\u013csk\u0101be, s\u0101lssk\u0101be, bromsk\u0101be, jod\u016bde\u0146ra\u017esk\u0101be u. c. Da\u017e\u0101du \u0161\u0137idrumu transport\u0113\u0161anai ir nepiecie\u0161ami da\u017e\u0101du materi\u0101lu s\u016bk\u0146i. Ja attiec\u012bgais \u0137\u012bmisko vielu s\u016bknis nav pareizi izv\u0113l\u0113ts, tas viegli izraisa koroziju. Kad \u0137\u012bmiskais s\u016bknis ir korod\u0113jis, to nevar izmantot. Teflona s\u016bk\u0146i un v\u0101rsti ir apkopoju\u0161i da\u017eus bie\u017e\u0101k sastopamos koroz\u012bvos \u0161\u0137idrumus, kas atbilst \u016bdens s\u016bk\u0146a izv\u0113lei, kas, manupr\u0101t, b\u016bs noder\u012bgi ikvienam, lai pareizi izv\u0113l\u0113tos sk\u0101b\u0113m un s\u0101rmiem iztur\u012bgus \u0137\u012bmiskos s\u016bk\u0146us.<\/p>\n

1. S\u0101lssk\u0101bes vides anal\u012bze<\/p>\n

S\u0101lssk\u0101bes koroz\u012bv\u0101s aktivit\u0101tes parasto met\u0101lu sec\u012bba: k\u0101lijs, n\u0101trijs, kalcijs, magnijs, alum\u012bnijs, cinks, dzelzs, alva, svins, (\u016bde\u0146radis), var\u0161, dz\u012bvsudrabs, sudrabs, plat\u012bns, zelts. Jo vair\u0101k uz priek\u0161u, jo akt\u012bv\u0101ks. Priek\u0161\u0101 eso\u0161ais var rea\u0123\u0113t ar \u016bde\u0146radi. T\u0101p\u0113c, izv\u0113loties s\u0101lssk\u0101bes s\u016bkni, nevar izmantot met\u0101la (uz dzelzs b\u0101zes) s\u016bkni. Austen\u012bta ner\u016bs\u0113jo\u0161ais t\u0113rauds, piem\u0113ram, 304 un 316L, ar\u012b hlor\u012bda jonus saturo\u0161\u0101 vid\u0113 izraisa starpkrist\u0101lu koroziju. Izmanto ar\u012b \u012bpa\u0161us met\u0101la materi\u0101lus, piem\u0113ram, Hastelloy, ta\u010du to cena ir \u013coti augsta. T\u0101p\u0113c, izv\u0113loties s\u0101lssk\u0101bes s\u016bkni, caurpl\u016bdes da\u013c\u0101m j\u0101izv\u0113las s\u016bknis, kas izgatavots no fluoroplasta materi\u0101la, kas ir gan ekonomisks, gan dro\u0161s.<\/p>\n

\uff081\uff09 Ja s\u0101lssk\u0101b\u0113 ir cietas da\u013ci\u0146as (s\u0101lsk\u0101bes atkritumi kodin\u0101\u0161anas proces\u0101), t\u0101 ir j\u0101filtr\u0113. Izv\u0113loties centrb\u0113dzes s\u016bkni, j\u0101\u0146em v\u0113r\u0101, ka j\u0101izmanto meh\u0101niskais bl\u012bv\u0113jums (SIC pret SIC). Ja s\u0101lssk\u0101bes atkritumi netiek r\u016bp\u012bgi filtr\u0113ti, tas var nodro\u0161in\u0101t meh\u0101nisko bl\u012bv\u0113jumu norm\u0101lu darb\u012bbu.<\/p>\n

\uff082\uff09T\u012brai s\u0101lssk\u0101bei bez da\u013ci\u0146\u0101m var izv\u0113l\u0113ties centrb\u0113dzes vai magn\u0113tisko s\u016bkni.<\/p>\n

Liel\u0101kajai da\u013cai nemet\u0101lisko materi\u0101lu ir laba iztur\u012bba pret s\u0101lssk\u0101bes koroziju, t\u0101p\u0113c s\u016bk\u0146i ar gumijas oder\u0113jumu un plastmasas s\u016bk\u0146i (piem\u0113ram, in\u017eeniertehniskie plastmasas, fluoroplastmasa u. c.) ir vislab\u0101k\u0101 izv\u0113le s\u0101lssk\u0101bes transport\u0113\u0161anai. Uz\u0146\u0113muma izmantojamie ra\u017eojumi ir \u0161\u0101di: IHF fluoroplastmasas centrb\u0113dzes s\u016bk\u0146i, CQB fluoroplastmasas magn\u0113tiskie s\u016bk\u0146i bez nopl\u016bdes utt.<\/p>\n

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2. Sl\u0101pek\u013csk\u0101bes vides anal\u012bze<\/p>\n

Kopum\u0101 liel\u0101k\u0101 da\u013ca met\u0101lu sl\u0101pek\u013csk\u0101b\u0113 \u0101tri korod\u0113 un tiek izn\u012bcin\u0101ti. Ner\u016bs\u0113jo\u0161ais t\u0113rauds ir vispla\u0161\u0101k izmantotais sl\u0101pek\u013csk\u0101bes iztur\u012bgais materi\u0101ls, un tam ir laba iztur\u012bba pret visu koncentr\u0101ciju sl\u0101pek\u013csk\u0101bi istabas temperat\u016br\u0101. J\u0101atz\u012bm\u0113, ka molibd\u0113nu saturo\u0161a ner\u016bs\u0113jo\u0161\u0101 t\u0113rauda (piem\u0113ram, 316, 316L) iztur\u012bba pret sl\u0101pek\u013csk\u0101bi ne tikai nav lab\u0101ka nek\u0101 parast\u0101 ner\u016bs\u0113jo\u0161\u0101 t\u0113rauda (piem\u0113ram, 304, 321), bet da\u017ek\u0101rt ir pat slikt\u0101ka. Augsttemperat\u016bras sl\u0101pek\u013csk\u0101bei parasti izmanto tit\u0101nu un tit\u0101na sakaus\u0113jumu materi\u0101lus. Koncentr\u0113ta sl\u0101pek\u013csk\u0101be satur aptuveni 65% HNO3, t\u0101s bl\u012bvums ir 1,4 g\/cm3. Tai ir sp\u0113c\u012bga asa smar\u017ea un kod\u012bgums. Tas ir sp\u0113c\u012bgs oksid\u0113t\u0101js, un tas var rea\u0123\u0113t ar gandr\u012bz visiem met\u0101liem, bet ne ar fluoroplastmasas materi\u0101liem. T\u0101p\u0113c fluoroplasta s\u016bk\u0146u izmanto\u0161ana sl\u0101pek\u013csk\u0101bes pieg\u0101des s\u016bk\u0146os ir gan ekonomiska, gan iztur\u012bga.<\/p>\n

M\u0113s iesak\u0101m izmantot \u0161\u0101dus sl\u0101pek\u013csk\u0101bes pieg\u0101des s\u016bk\u0146us:<\/p>\n

\uff081\uff09Ja t\u0101 ir 98% koncentr\u0113ta sl\u0101pek\u013csk\u0101be, varat izv\u0113l\u0113ties IHF tipa fluoroplastisko centrb\u0113dzes s\u016bkni. Visas \u0161\u012bs s\u0113rijas s\u016bk\u0146u pl\u016bsmas da\u013cas ir izgatavotas no fluoroplasta (poliperfluoretil\u0113na propil\u0113na), un meh\u0101niskais bl\u012bv\u0113jums izmanto \u0101r\u0113jo silfonu meh\u0101nisko bl\u012bv\u0113jumu, kas pild\u012bts ar tetrafluoretil\u0113na materi\u0101lu, kas efekt\u012bvi nov\u0113r\u0161 koncentr\u0113tas s\u0113rsk\u0101bes nopl\u016bdi. J\u0101palielina izv\u0113l\u0113t\u0101 motora jauda. Koncentr\u0113tas sl\u0101pek\u013csk\u0101bes transport\u0113\u0161anas gad\u012bjum\u0101 \u012bpatn\u0113jo v\u0101rpstas jaudu var apr\u0113\u0137in\u0101t, pamatojoties uz s\u016bk\u0146a nomin\u0101lo v\u0101rpstas jaudu.<\/p>\n

\uff082\uff09Ja t\u0101 ir zemas koncentr\u0101cijas at\u0161\u0137aid\u012bta sl\u0101pek\u013csk\u0101be, varat izv\u0113l\u0113ties fluoroplastisko magn\u0113tisk\u0101s piedzi\u0146as fluoroplastisko magn\u0113tisk\u0101s piedzi\u0146as CQB (magn\u0113tisk\u0101s piedzi\u0146as centrb\u0113dzes s\u016bkni). \u0160\u012bs s\u0113rijas s\u016bk\u0146os izmanto magn\u0113tisko piedzi\u0146u, un tiem nav nopl\u016bdes. To \u012bpa\u0161i izmanto \u013coti kod\u012bgu vielu, piem\u0113ram, sl\u0101pek\u013csk\u0101bes, s\u0113rsk\u0101bes un s\u0101lssk\u0101bes, transport\u0113\u0161anai.<\/p>\n

3. S\u0113rsk\u0101be k\u0101 viena no sp\u0113c\u012bg\u0101m kod\u012bg\u0101m viel\u0101m ir svar\u012bga r\u016bpnieciska izejviela ar pla\u0161u pielietojumu kl\u0101stu. S\u0113rsk\u0101bes transport\u0113\u0161anai izmantojamo s\u016bk\u0146u veidi ir fluoroplastiskie centrb\u0113dzes s\u016bk\u0146i, fluoroplastiskie magn\u0113tiskie s\u016bk\u0146i, fluoroplastiskie pa\u0161ies\u016bco\u0161ie s\u016bk\u0146i u. c. Da\u017e\u0101du koncentr\u0101ciju un temperat\u016bru s\u0113rsk\u0101bei ir liela at\u0161\u0137ir\u012bba attiec\u012bb\u0101 uz materi\u0101lu koroziju. Koncentr\u0113tai s\u0113rsk\u0101bei, kuras koncentr\u0101cija ir liel\u0101ka par 80% un temperat\u016bra ir zem\u0101ka par 80 \u00b0C, oglek\u013ca t\u0113raudam un \u010dugunam ir laba iztur\u012bba pret koroziju, ta\u010du tie nav piem\u0113roti s\u0113rsk\u0101bei, kas pl\u016bst ar lielu \u0101trumu, un nav piem\u0113roti izmanto\u0161anai par s\u016bk\u0146u un v\u0101rstu materi\u0101liem; ar\u012b parast\u0101 ner\u016bs\u0113jo\u0161\u0101 t\u0113rauda, piem\u0113ram, 304 (0CR18NI9) un 316 (0CR18NI12MO2TI), izmanto\u0161ana s\u0113rsk\u0101bes vid\u0113 ir ierobe\u017eota. T\u0101p\u0113c s\u016bk\u0146i un v\u0101rsti s\u0113rsk\u0101bes transport\u0113\u0161anai parasti tiek izgatavoti no \u010duguna ar augstu sil\u012bcija saturu (gr\u016bti liet un apstr\u0101d\u0101t) un augstas le\u0123\u0113\u0161anas pak\u0101pes ner\u016bs\u0113jo\u0161\u0101 t\u0113rauda (Nr. 20 sakaus\u0113jums), bet tie ir gr\u016bti apstr\u0101d\u0101jami un d\u0101rgi, t\u0101p\u0113c cilv\u0113ki tos nav iecien\u012bju\u0161i. Fluoroplastiskajiem sakaus\u0113jumiem ir lieliska iztur\u012bba pret s\u0113rsk\u0101bi. Pa\u0161laik nav konstat\u0113ts neviens \u0137\u012bmiskais l\u012bdzeklis, kas ar tiem rea\u0123\u0113tu piem\u0113rojamaj\u0101 temperat\u016bras diapazon\u0101, t\u0101p\u0113c ekonomisk\u0101ka izv\u0113le ir izmantot s\u016bk\u0146us ar fluora oder\u0113jumu (F46). Piem\u0113rojamie ra\u017eojumi ir \u0161\u0101di: Fluoroplastmasas magn\u0113tiskais s\u016bknis CQB, fluoroplastmasas magn\u0113tiskais s\u016bknis IMD, fluoroplastmasas centrb\u0113dzes s\u016bknis IHF, fluoriz\u0113ta sakaus\u0113juma centrb\u0113dzes s\u016bknis FSB utt.<\/p>\n

4. Eti\u0137sk\u0101be ir viena no kod\u012bg\u0101kaj\u0101m viel\u0101m organisko sk\u0101bju vid\u016b. Parastais t\u0113rauds sp\u0113c\u012bgi korod\u0113 eti\u0137sk\u0101b\u0113 jebk\u0101d\u0101 koncentr\u0101cij\u0101 un temperat\u016br\u0101. Ner\u016bs\u0113jo\u0161ais t\u0113rauds ir lieliski iztur\u012bgs pret eti\u0137sk\u0101bi. Molibd\u0113nu saturo\u0161u 316 ner\u016bs\u0113jo\u0161o t\u0113raudu var izmantot ar\u012b augstas temperat\u016bras un at\u0161\u0137aid\u012btiem eti\u0137sk\u0101bes tvaikiem. Augstas temperat\u016bras un augstas koncentr\u0101cijas eti\u0137sk\u0101bei vai cit\u0101m koroz\u012bv\u0101m vid\u0113m, k\u0101 ar\u012b cit\u0101m augst\u0101m pras\u012bb\u0101m var izv\u0113l\u0113ties augstas le\u0123\u0113\u0161anas pak\u0101pes ner\u016bs\u0113jo\u0161\u0101 t\u0113rauda vai fluoroplasta s\u016bk\u0146us.<\/p>\n

Sl\u0101pek\u013csk\u0101bes un eti\u0137sk\u0101bes \u012bpa\u0161\u012bbas ir nedaudz l\u012bdz\u012bgas, ta\u010du, izv\u0113loties fluoroplastmasas s\u016bk\u0146us, t\u0101s nevar visp\u0101rin\u0101t. Piem\u0113ram, izv\u0113loties fluoroplastmasas centrb\u0113dzes s\u016bk\u0146us, fluoroplastmasas magn\u0113tiskos s\u016bk\u0146us vai fluoroplastmasas pa\u0161ies\u016bco\u0161os s\u016bk\u0146us, joproj\u0101m ir j\u0101izv\u0113las piem\u0113rot\u0101kais modelis atbilsto\u0161i uz\u0146\u0113muma faktiskajai ra\u017eo\u0161anas videi. Piem\u0113ram, da\u017e\u0101s vid\u0113s ir nepiecie\u0161ams liels spiediens. Visliel\u0101kais iesp\u0113jamais augstums ir 300 metri. Da\u017e\u0101s ir nepiecie\u0161ams, lai s\u016bk\u0146a tips nodro\u0161in\u0101tu izol\u0101cijas funkciju utt. T\u0101p\u0113c fluoroplastmasas s\u016bk\u0146u izv\u0113le j\u0101veic, pamatojoties uz faktiskajiem apst\u0101k\u013ciem, un j\u0101b\u016bt uzman\u012bgiem un piesardz\u012bgiem.<\/p>\n

5. S\u0101rmu (n\u0101trija hidroks\u012bds) T\u0113raudu pla\u0161i izmanto n\u0101trija hidroks\u012bda \u0161\u0137\u012bdumos, kuru temperat\u016bra ir zem\u0101ka par 80 \u00b0C un koncentr\u0101cija nep\u0101rsniedz 30%. Daudz\u0101s r\u016bpn\u012bc\u0101s joproj\u0101m izmanto parasto t\u0113raudu pie 100\u00b0C un zem 75%. Lai gan palielin\u0101s korozija, tas ir ekonomiski izdev\u012bgi. Parastajam ner\u016bs\u0113jo\u0161ajam t\u0113raudam nav ac\u012bmredzamu priek\u0161roc\u012bbu sal\u012bdzin\u0101jum\u0101 ar \u010dugunu attiec\u012bb\u0101 uz iztur\u012bbu pret s\u0101rmu \u0161\u0137\u012bduma koroziju. Kam\u0113r vid\u0113 ir at\u013cauts pievienot nelielu daudzumu dzelzs, ner\u016bs\u0113jo\u0161ais t\u0113rauds nav ieteicams. Augsttemperat\u016bras s\u0101rmu \u0161\u0137\u012bdumam liel\u0101koties izmanto tit\u0101nu un tit\u0101na sakaus\u0113jumus vai augstas le\u0123\u0113\u0161anas pak\u0101pes ner\u016bs\u0113jo\u0161o t\u0113raudu.<\/p>\n

6. S\u0101\u013cais \u016bdens (j\u016bras \u016bdens) Parastajam t\u0113raudam ir zema korozijas \u0101trums n\u0101trija hlor\u012bda \u0161\u0137\u012bdum\u0101, j\u016bras \u016bden\u012b un s\u0101ls\u016bden\u012b, un parasti tam nepiecie\u0161ama p\u0101rkl\u0101juma aizsardz\u012bba; ar\u012b da\u017e\u0101du veidu ner\u016bs\u0113jo\u0161ajam t\u0113raudam ir \u013coti zems vienm\u0113r\u012bgs korozijas \u0101trums, bet hlor\u012bda jonu ietekm\u0113 var rasties lok\u0101la korozija, un parasti tiek izmantots 316 ner\u016bs\u0113jo\u0161ais t\u0113rauds.<\/p>\n

7. Fluor\u016bde\u0146ra\u017esk\u0101bes pieg\u0101des s\u016bk\u0146u materi\u0101li parasti tiek izv\u0113l\u0113ti \u0161\u0101di: magnijs (Mg): Tas ir ide\u0101ls korozijiztur\u012bgs materi\u0101ls fluor\u016bde\u0146ra\u017esk\u0101bei un parasti tiek izmantots tikai k\u0101 konteiners; tit\u0101ns: tas ir piem\u0113rots koncentr\u0101cij\u0101m 60~100% (istabas temperat\u016bra), un korozijas \u0101trums palielin\u0101s, ja koncentr\u0101cija ir zem\u0101ka par 60%; Monel sakaus\u0113jums: tas ir piem\u0113rots koncentr\u0101cij\u0101m 60~100% (istabas temperat\u016bra), un korozijas \u0101trums palielin\u0101s, ja koncentr\u0101cija ir zem\u0101ka par 60%; Monel sakaus\u0113jums: Tas ir izcils materi\u0101ls, kas ir iztur\u012bgs pret fluor\u016bde\u0146ra\u017esk\u0101bi un var iztur\u0113t visas temperat\u016bras un koncentr\u0101cijas (ieskaitot vir\u0161anas temperat\u016bru); sudrabs (Ag): V\u0101ro\u0161a fluor\u016bde\u0146ra\u017esk\u0101be, ko galvenok\u0101rt izmanto m\u0113rier\u012bc\u0113s.<\/p>\n

8. Alkoholi, ketoni, esteri un \u0113teri Parast\u0101s spirta barotnes ir metanols, etanols, etil\u0113nglikols, etil\u0113nglikols, propanols u. c., ketona barotnes ir acetons, butanons u. c., estera barotnes ir da\u017e\u0101di metilesteri, etilesteri u. c., bet \u0113tera barotnes ir metileteris, etil\u0113teris, butil\u0113teris u. c. Tie b\u016bt\u012bb\u0101 nekorod\u0113 un tos var izmantot kop\u0101 ar parasti izmantotiem materi\u0101liem. Izv\u0113loties j\u0101izdara sapr\u0101t\u012bga izv\u0113le, pamatojoties uz barot\u0146u \u012bpa\u0161\u012bb\u0101m un saist\u012btaj\u0101m pras\u012bb\u0101m. J\u0101atz\u012bm\u0113 ar\u012b tas, ka ketoni, esteri un \u0113teri \u0161\u0137\u012bst daudzos gumijas veidos, t\u0101p\u0113c, izv\u0113loties bl\u012bv\u0113\u0161anas materi\u0101lus, j\u0101izvair\u0101s no k\u013c\u016bd\u0101m. Ir v\u0113l daudz citu nes\u0113ju, kurus \u0161eit nevar iepaz\u012bstin\u0101t vienu p\u0113c otra.<\/p>","protected":false},"excerpt":{"rendered":"

Common corrosive liquids in the chemical industry include sulfuric acid, nitric acid, hydrochloric acid, hydrobromic acid, hydroiodic acid, etc. Pumps of different materials are required to transport different liquid media. If the corresponding chemical pump is not selected correctly, it will easily cause corrosion. Once corroded, the chemical pump cannot be used. Teflon pumps and […]<\/p>","protected":false},"author":4,"featured_media":1360,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[36],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.tflequip.com\/lv\/wp-json\/wp\/v2\/posts\/1359"}],"collection":[{"href":"https:\/\/www.tflequip.com\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tflequip.com\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tflequip.com\/lv\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tflequip.com\/lv\/wp-json\/wp\/v2\/comments?post=1359"}],"version-history":[{"count":0,"href":"https:\/\/www.tflequip.com\/lv\/wp-json\/wp\/v2\/posts\/1359\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.tflequip.com\/lv\/wp-json\/wp\/v2\/media\/1360"}],"wp:attachment":[{"href":"https:\/\/www.tflequip.com\/lv\/wp-json\/wp\/v2\/media?parent=1359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tflequip.com\/lv\/wp-json\/wp\/v2\/categories?post=1359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tflequip.com\/lv\/wp-json\/wp\/v2\/tags?post=1359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}