{"id":591,"date":"2024-04-13T20:57:36","date_gmt":"2024-04-13T12:57:36","guid":{"rendered":"https:\/\/siliconcarbide.net\/?p=591"},"modified":"2024-07-12T19:31:21","modified_gmt":"2024-07-12T11:31:21","slug":"striekacie-dyzy-z-karbidu-kremika-fgd","status":"publish","type":"post","link":"https:\/\/siliconcarbide.net\/sk\/silicon-carbide-fgd-spray-nozzles\/","title":{"rendered":"Rozpra\u0161ovacie d\u00fdzy FGD z karbidu krem\u00edka"},"content":{"rendered":"

Rozpra\u0161ovacie d\u00fdzy FGD z karbidu krem\u00edka<\/h1>\n

Karbid krem\u00edka (SiC) je v\u00fdnimo\u010dne tvrd\u00fd \u017eiaruvzdorn\u00fd keramick\u00fd materi\u00e1l zlo\u017een\u00fd z oxidu kremi\u010dit\u00e9ho a uhl\u00edka, ktor\u00fd sa celosvetovo osved\u010dil ako ob\u013e\u00faben\u00fd medzi \u017eiaruvzdorn\u00fdmi materi\u00e1lmi a odoln\u00fd vo\u010di kor\u00f3zii. na\u0161e d\u00fdzy z karbidu krem\u00edka pre syst\u00e9my mokr\u00e9ho ods\u00edrenia v\u00e1penca sa vyzna\u010duj\u00fa rovnomern\u00fdm rozlo\u017een\u00edm kvapiek a hladk\u00fdm prietokov\u00fdm kan\u00e1lom bez ak\u00fdchko\u013evek blokovac\u00edch javov. Ich odolnos\u0165 vo\u010di kor\u00f3zii, oxid\u00e1cii a vysok\u00fdm teplot\u00e1m je p\u00f4sobiv\u00e1.<\/p>\n

Vysok\u00e1 odolnos\u0165 proti kor\u00f3zii<\/h2>\n

Keramika z karbidu krem\u00edka (SiC) je navrhnut\u00e1 pre vynikaj\u00facu chemick\u00fa odolnos\u0165 a m\u00f4\u017ee by\u0165 tvarovan\u00e1 do ve\u013emi zlo\u017eit\u00fdch tvarov. Keramika SiC m\u00e1 \u0161irok\u00e9 p\u00e1sov\u00e9 rozhranie, dobr\u00fa tepeln\u00fa vodivos\u0165, n\u00edzky koeficient tepelnej roz\u0165a\u017enosti a vysok\u00fa tvrdos\u0165 - vlastnosti, ktor\u00e9 zabezpe\u010duj\u00fa v\u00e4\u010d\u0161iu odolnos\u0165 proti kor\u00f3zii kyselinami a oxid\u00e1cii ako ak\u00fdko\u013evek in\u00fd materi\u00e1l.<\/p>\n

SiC sa vo ve\u013ekej miere pou\u017e\u00edva ako materi\u00e1l vo\u013eby v rozpra\u0161ovac\u00edch d\u00fdzach pre mokr\u00e9 ods\u00edrenie spal\u00edn v elektr\u00e1r\u0148ach a ve\u013ek\u00fdch kotloch v\u010faka svojej vynikaj\u00facej odolnosti vo\u010di kor\u00f3zii kyselinami, preto\u017ee na svojom povrchu vytv\u00e1ra oxidov\u00fa bari\u00e9ru, ktor\u00e1 zabra\u0148uje priamej reakcii medzi substr\u00e1tom a \u00fato\u010diacimi druhmi, ako aj dop\u013a\u0148aniu dif\u00faziou z vodn\u00e9ho prostredia.<\/p>\n

Vysok\u00e1 tvrdos\u0165<\/h2>\n

D\u00fdzy z karbidu krem\u00edka s vysokou tvrdos\u0165ou odol\u00e1vaj\u00fa n\u00e1ro\u010dn\u00fdm podmienkam s mal\u00fdm rizikom zlomenia, \u010do pom\u00e1ha predch\u00e1dza\u0165 n\u00e1kladn\u00fdm zlomeniam d\u00fdz v d\u00f4sledku tlakov\u00fdch r\u00e1zov po\u010das sp\u00fa\u0161\u0165ania, pokusov o uvo\u013enenie upchat\u00fdch d\u00fdz alebo be\u017en\u00fdch \u00fadr\u017ebov\u00fdch \u010dinnost\u00ed, ako je napr\u00edklad chemick\u00e9 \u010distenie.<\/p>\n

Spekan\u00fd karbid krem\u00edka (SiC) je hlavnou keramickou alternat\u00edvou karbidu volfr\u00e1mu pre aplik\u00e1cie tryskac\u00edch d\u00fdz v\u010faka svojej vynikaj\u00facej tvrdosti. Odolnos\u0165 SiC tie\u017e umo\u017e\u0148uje efekt\u00edvne udr\u017eiava\u0165 vn\u00fatorn\u00fa geometriu a z\u00e1rove\u0148 obmedzuje opotrebovanie tryskac\u00edch d\u00fdz pre optim\u00e1lnu \u00fa\u010dinnos\u0165 a minim\u00e1lne opotrebovanie.<\/p>\n

Reak\u010dne viazan\u00fd karbid krem\u00edka (RBSC\/SiSiC) je univerz\u00e1lny \u017eiaruvzdorn\u00fd keramick\u00fd materi\u00e1l, z ktor\u00e9ho mo\u017eno vytv\u00e1ra\u0165 nosn\u00edky, valce, r\u00farky chladiaceho vzduchu, ochrann\u00e9 trubice termo\u010dl\u00e1nkov, trubice na meranie teploty a in\u00e9 \u0161peci\u00e1lne tvarovan\u00e9 kon\u0161truk\u010dn\u00e9 diely. RBSC m\u00e1 vynikaj\u00face vlastnosti v oblasti pevnosti, tvrdosti, odolnosti proti oderu, odolnosti proti kor\u00f3zii, odolnosti proti oxid\u00e1cii a odolnosti proti tepeln\u00fdm \u0161okom - v\u010faka tomu je jedn\u00fdm z najvyh\u013ead\u00e1vanej\u0161\u00edch \u017eiaruvzdorn\u00fdch materi\u00e1lov pou\u017e\u00edvan\u00fdch v energetike a v syst\u00e9moch ods\u00edrovania spal\u00edn ve\u013ek\u00fdch kotlov.<\/p>\n

Odolnos\u0165 vo\u010di vysok\u00fdm teplot\u00e1m<\/h2>\n

Odolnos\u0165 d\u00fdz vo\u010di opotrebovaniu je hlavn\u00fdm faktorom ur\u010duj\u00facim ich \u017eivotnos\u0165. Medzi tradi\u010dn\u00e9 materi\u00e1ly d\u00fdz patr\u00ed keramika, nehrdzavej\u00faca oce\u013e, mosadz a polym\u00e9ry - pri\u010dom polym\u00e9r je odolnej\u0161\u00ed ako keramika, ale menej tvrd\u00fd ako nehrdzavej\u00faca oce\u013e a mosadz. Jedn\u00fdm zo sp\u00f4sobov, ako zv\u00fd\u0161i\u0165 odolnos\u0165 proti opotrebovaniu polym\u00e9rov\u00fdch d\u00fdz, je pou\u017eitie disperzn\u00fdch pln\u00edv.<\/p>\n

Spekan\u00fd karbid krem\u00edka je vynikaj\u00facou vo\u013ebou materi\u00e1lu pre tesniace plochy chemick\u00fdch \u010derpadiel. Je odoln\u00fd vo\u010di kor\u00f3zii, oderu, n\u00e1razom a \u013eahko sa opracov\u00e1va, \u010do zaru\u010duje dlh\u00fa \u017eivotnos\u0165 a spo\u013eahliv\u00fd v\u00fdkon so zn\u00ed\u017een\u00fdm klzn\u00fdm tren\u00edm o r\u00f4zne krycie materi\u00e1ly.<\/p>\n

Rozpra\u0161ovacie d\u00fdzy FGD s\u00fa z\u00e1kladn\u00fdmi komponentmi tepeln\u00fdch elektr\u00e1rn\u00ed, ve\u013ek\u00fdch kotlov a ods\u00edrovac\u00edch zariaden\u00ed. Ich pou\u017eitie zah\u0155\u0148a rozpra\u0161ovacie d\u00fdzy typu vortex typu vortex typu spiral typu liquid column typu hollow cone; s rovnomerne rozpt\u00fdlen\u00fdmi kvapkami rozpra\u0161ova\u010da, ktor\u00e9 plynule pr\u00fadia bez blokovania v ich prietokov\u00fdch kan\u00e1loch; na\u0161a spolo\u010dnos\u0165 vyr\u00e1ba r\u00f4zne druhy FGD d\u00fdz vhodn\u00fdch na r\u00f4zne pou\u017eitia.<\/p>\n

Vysok\u00e1 pevnos\u0165<\/h2>\n

Spekan\u00fd karbid krem\u00edka vynik\u00e1 vynikaj\u00facou pevnos\u0165ou a tvrdos\u0165ou, v\u010faka \u010domu je vynikaj\u00facou alternat\u00edvou karbidu volfr\u00e1mu pre tryskacie d\u00fdzy. Jeho odolnos\u0165 vo\u010di er\u00f3zii a kor\u00f3zii ho rob\u00ed vhodn\u00fdm pre aplik\u00e1cie trysky na rozpra\u0161ovanie FGD, zatia\u013e \u010do jeho dlh\u00e1 \u017eivotnos\u0165 zni\u017euje po\u017eiadavky na kompresor a prestoje spojen\u00e9 s v\u00fdmenou trysky na tryskanie.<\/p>\n

pon\u00fakame \u0161irok\u00fd v\u00fdber d\u00fdz FGD vhodn\u00fdch pre syst\u00e9my mokr\u00e9ho ods\u00edrenia v\u00e1penat\u00fdch spal\u00edn vr\u00e1tane d\u00fdz na rozpra\u0161ovanie absorb\u00e9ra, d\u00fdz na oxida\u010dn\u00fd vzduch a recykla\u010dn\u00fdch kalov\u00fdch \u010derpadiel. D\u00fdzy FGD s\u00fa neoddelite\u013enou s\u00fa\u010das\u0165ou ka\u017ed\u00e9ho syst\u00e9mu FGD, a ak chcete dosiahnu\u0165 optim\u00e1lny v\u00fdkon, musia vydr\u017ea\u0165.<\/p>\n

D\u00fdzy vyroben\u00e9 z keramick\u00fdch materi\u00e1lov odoln\u00fdch vo\u010di oderu s\u00fa ide\u00e1lnou vo\u013ebou pre d\u00fdzy FGD, preto\u017ee chr\u00e1nia pred er\u00f3ziou a kor\u00f3ziou z popol\u010dekovej suspenzie, maj\u00fa vy\u0161\u0161\u00ed modul lomu (MOR) a zvl\u00e1daj\u00fa nam\u00e1hanie spojen\u00e9 s \u010dast\u00fdmi cyklami sp\u00fa\u0161\u0165ania a odstavovania. Ich MOR je zvy\u010dajne p\u00e4\u0165 a\u017e sedemkr\u00e1t vy\u0161\u0161\u00ed ako u in\u00fdch keramick\u00fdch materi\u00e1lov, \u010do umo\u017e\u0148uje odlievanie d\u00fdz RBSC do zlo\u017eitej\u0161\u00edch tvarov ako d\u00fdz SNBSC.<\/p>\n

Dlh\u00e1 \u017eivotnos\u0165<\/h2>\n

Keramika z karbidu krem\u00edka je tvrd\u00fd a odoln\u00fd materi\u00e1l ide\u00e1lny na pou\u017eitie v n\u00e1ro\u010dn\u00fdch podmienkach. Ich n\u00edzka tepeln\u00e1 roz\u0165a\u017enos\u0165 znamen\u00e1, \u017ee sa m\u00f4\u017eu pou\u017e\u00edva\u0165 aj pri vy\u0161\u0161\u00edch teplot\u00e1ch bez v\u00fdrazn\u00e9ho zv\u00fd\u0161enia miery tepelnej roz\u0165a\u017enosti, \u010do pom\u00e1ha predch\u00e1dza\u0165 po\u0161kodeniu alebo poruch\u00e1m sp\u00f4soben\u00fdm vibr\u00e1ciami, n\u00e1razmi alebo kol\u00edsan\u00edm teploty. Okrem toho je t\u00e1to keramika odoln\u00e1 vo\u010di kyselin\u00e1m a chemik\u00e1li\u00e1m sp\u00f4sobuj\u00facim kor\u00f3ziu, ako aj poskytuje ochranu pred po\u0161koden\u00edm alebo poruchou sp\u00f4sobenou vibr\u00e1ciami, otrasmi alebo kol\u00edsan\u00edm teploty. D\u00fdzy FGD musia spo\u013eahlivo fungova\u0165 po\u010das dlh\u0161ieho obdobia v n\u00e1ro\u010dn\u00fdch podmienkach vr\u00e1tane vysok\u00fdch tepl\u00f4t a kor\u00f3zie, ktor\u00e9 sa vyskytuj\u00fa v uho\u013en\u00fdch elektr\u00e1r\u0148ach. V\u00fdber vhodn\u00fdch d\u00fdz m\u00f4\u017ee zabezpe\u010di\u0165 optim\u00e1lne fungovanie v\u00e1\u0161ho procesu. D\u00fdzy z karbidu krem\u00edka prekon\u00e1vaj\u00fa oce\u013eov\u00e9 d\u00fdzy t\u00fdm, \u017ee s\u00fa odolnej\u0161ie a maj\u00fa dlh\u00fa \u017eivotnos\u0165; \u0161etria tak peniaze a prestoje sp\u00f4soben\u00e9 nepl\u00e1novan\u00fdmi n\u00e1kladmi na \u00fadr\u017ebu. pod\u013ea potrieb va\u0161ej aplik\u00e1cie s\u00fa v\u00e1m na v\u00fdber r\u00f4zne d\u00fdzy FGD vr\u00e1tane dut\u00fdch ku\u017ee\u013eov, v\u00edriv\u00fdch tangenci\u00e1lnych d\u00fdz a d\u00fdz v tvare X. Ve\u013ek\u00fd priemer vo\u013en\u00e9ho priechodu d\u00fdz tvaru X umo\u017e\u0148uje menej \u010dast\u00e9 upch\u00e1vanie a \u00fadr\u017ebu, pri\u010dom s\u00fa kon\u0161truk\u010dne dostato\u010dne pevn\u00e9, aby vydr\u017eali tlakov\u00e9 \u0161pi\u010dky po\u010das sp\u00fa\u0161\u0165ania alebo pri \u010disten\u00ed zablokovan\u00fdch d\u00fdz.<\/p>\n

\"Rozpra\u0161ovacie<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Silicon Carbide FGD spray nozzles Silicon Carbide (SiC) is an exceptionally hard refractory ceramic material composed of silica and carbon that has proven popular among refractories and corrosion resistant worldwide. our FGD silicon carbide nozzles for limestone wet desulfurization systems stand out with their uniform droplet distribution and smooth flow channel, free from any blocking […]<\/p>\n","protected":false},"author":1,"featured_media":621,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-591","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sic-ceramic-nozzle"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbide.net\/sk\/wp-json\/wp\/v2\/posts\/591","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbide.net\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbide.net\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbide.net\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbide.net\/sk\/wp-json\/wp\/v2\/comments?post=591"}],"version-history":[{"count":5,"href":"https:\/\/siliconcarbide.net\/sk\/wp-json\/wp\/v2\/posts\/591\/revisions"}],"predecessor-version":[{"id":593,"href":"https:\/\/siliconcarbide.net\/sk\/wp-json\/wp\/v2\/posts\/591\/revisions\/593"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/siliconcarbide.net\/sk\/wp-json\/wp\/v2\/media\/621"}],"wp:attachment":[{"href":"https:\/\/siliconcarbide.net\/sk\/wp-json\/wp\/v2\/media?parent=591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbide.net\/sk\/wp-json\/wp\/v2\/categories?post=591"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbide.net\/sk\/wp-json\/wp\/v2\/tags?post=591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}