{"id":493,"date":"2021-05-17T07:28:45","date_gmt":"2021-05-17T07:28:45","guid":{"rendered":"http:\/\/houseofinsulators.com\/?post_type=product&p=493"},"modified":"2021-05-17T07:36:31","modified_gmt":"2021-05-17T07:36:31","slug":"raschigovy-krouzky","status":"publish","type":"product","link":"https:\/\/houseofinsulators.com\/cs\/produkt\/raschigovy-krouzky\/","title":{"rendered":"Ra\u0161ikovy krou\u017eky"},"content":{"rendered":"
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Keramika je jedn\u00edm z typick\u00fdch materi\u00e1l\u016f, ze kter\u00fdch jsou Raschigovy krou\u017eky vyr\u00e1b\u011bny. Vyr\u00e1b\u00edme je z materi\u00e1l\u016f, kter\u00e9 se chemicky nem\u011bn\u00ed \u00fa\u010dinkem v kolon\u011b se nach\u00e1zej\u00edc\u00ed sm\u011bsi.<\/p>\n

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Charakteristick\u00fd rozm\u011br krou\u017ek\u016f vol\u00ed u\u017eivatel s ohledem na pr\u016fm\u011br kolony a po\u010det p\u0159erozd\u011blovac\u00edch p\u0159ep\u00e1\u017eek. Kolona velk\u00e9ho pr\u016fm\u011bru vy\u017eaduje velk\u00e9 Raschigovy krou\u017eky. Kapaln\u00e1 f\u00e1ze m\u00e1 v kolon\u011b tendenci pohybovat se sp\u00ed\u0161e po okraji ne\u017e st\u0159edem n\u00e1pln\u011b. \u010c\u00edm men\u0161\u00ed krou\u017eky se pou\u017eij\u00ed, t\u00edm d\u0159\u00edve se kapaln\u00e1 f\u00e1ze p\u0159i sv\u00e9m toku dol\u016f kolonou dostane k okraji (vnit\u0159n\u00edm obvodu) kolony, zat\u00edmco st\u0159ed z\u016fstane “such\u00fd”. Aby se tomuto ne\u017e\u00e1douc\u00edmu jevu p\u0159ede\u0161lo, je pot\u0159eba volit n\u00e1pl\u0148 s dostate\u010dn\u00fdm charakteristick\u00fdm rozm\u011brem a dostate\u010dn\u00e9 mno\u017estv\u00ed p\u0159erozd\u011blovac\u00edch p\u0159ep\u00e1\u017eek.<\/p>\n

Nepol\u00e9van\u00e1 Metoda frak\u010dn\u00ed destilace organick\u00fdch l\u00e1tek v kolon\u011b s keramick\u00fdmi krou\u017eky byla poprv\u00e9 navr\u017eena N\u011bmeck\u00fdm chemick\u00fdm in\u017een\u00fdrem a pr\u016fmysln\u00edkem Frydrichem Raschigem v roce 1890. V sou\u010dasn\u00e9 dob\u011b se na trhu objevuj\u00ed i jin\u00e9 typy krou\u017ek\u016f, nap\u0159\u00edklad Pallov\u00e9 krou\u017eky \u010di krou\u017eky Berla. Ale Raschigovy krou\u017eky maj\u00ed z\u00e1sadn\u00ed v\u00fdhodu, \u017ee jsou n\u00edzkon\u00e1kladov\u00e9 a pom\u011brn\u011b snadno a rychle se daj\u00ed vyrobit.\u00a0 Pr\u00e1v\u011b proto jsou Raschigovy krou\u017eky nepostradateln\u00fdm pomocn\u00edkem v ka\u017ed\u00e9m technologick\u00e9m procesu, kde se pou\u017e\u00edvaj\u00ed kolony.<\/p>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Raschigovy krou\u017eky nab\u00edz\u00edme v rozm\u011brech (mm): 20×20, 25×25, 35×35, 50×50, 80×80, 100×100. Minim\u00e1ln\u00ed objednac\u00ed mno\u017estv\u00ed 1 cbm.<\/p>\n

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