Crude Zaub Roj Refining Thawj Qib

Kev piav qhia ntxaws txog kev kho kom zoo tag nrho

We call the oil extracted from the oil press as crude oil. The main component of crude oil is a mixture of triglyceride fatty acid esters (commonly known as neutral oil). In addition to neutral oils, crude oil also contains non-glyceride substances (collectively referred to as impurities), whose types, properties and states can be roughly divided into three categories: mechanical impurities, fat-soluble impurities and water-soluble impurities. It cannot be used directly. The purpose of refining is to remove solid impurities, free fatty acids, phospholipids, gums, waxes, pigments, odors, etc. contained in vegetable oils. This process is called "full refining".

Nws muaj tsib lub luag haujlwm tseem ceeb:

1. Dej degumming

Siv cov hydrophilicity ntawm colloidal impurities xws li phospholipids, ib co dej los yog electrolyte dilute tov yog ntxiv rau cov roj crude thaum stirring, kom cov colloidal impurities nyob rau hauv cov roj crude nqus dej, o, agglomerate, thiab cais cov degumming txoj kev. Nyob rau hauv cov txheej txheem ntawm hydration thiab degumming, ntxiv rau cov protein, mucus thiab kab hlau ions ua ke nrog phospholipids, phospholipids yog cov khoom tseem ceeb uas tuaj yeem coagulate thiab precipitate.

2. Alkali refining thiab deacidification

Txhua yam ntawm cov roj uas tsis tau ua tiav muaj qee cov roj fatty acids dawb. Cov txheej txheem ntawm kev tshem tawm cov rog dawb ntawm cov roj thiab cov rog yog hu ua deacidification. Txoj kev deacidification muaj xws li alkali refining, distillation, hnyav extraction thiab esterification. Alkaline refining thiab chav distillation (lub cev refining) yog siv dav hauv kev tsim khoom.

3. Adsorption decolorization

Roj adsorption decolorization yog siv qee yam tshuaj (xws li tshuaj dawb lub ntiaj teb, ua kom av nplaum, ua kom cov pa roj carbon monoxide, thiab lwm yam) kom muaj zog xaiv adsorption nyhuv ntawm cov xim, thiab nqus cov impurities xws li pigments nyob rau hauv cov roj nyob rau hauv tej yam kev mob, thiaj li ua kom tiav cov nyhuv adsorption ntawm pigments. lub hom phiaj ntawm decolorization. Tom qab cov roj tau kho los ntawm cov adsorbent, nws tuaj yeem tsis tsuas yog txhim kho cov xim ntawm cov roj, tshem tawm cov pos hniav, tab sis kuj tseem tshem tawm qee cov kab hlau ions thiab qee yam khoom uas tuaj yeem ua rau muaj tshuaj lom ntawm hydrogenation catalyst, thiaj li muab kev kho kom zoo ntxiv. (hydrogenation thiab deodorization) ntawm cov roj. nyob zoo.

4. Kub deodorization thiab lub cev qhuav dej

Nws yog ib txoj hauv kev uas cov ntxhiab tsw txawv txav raug tshem tawm los ntawm chav distillation nyob rau hauv qhov kub thiab txias siab los ntawm kev siv qhov sib txawv ntawm volatilization ntawm cov ntxhiab tsw hauv cov roj thiab triglycerides. Lub hauv paus ntsiab lus ntawm chav distillation thiab deodorization (tseem hu ua stripping method) yog tias cov dej vapor dhau los ntawm cov roj uas muaj cov ntxhiab tsw, qhov chaw ntawm cov vapor thiab cov dej sib cuag, cov dej vapor yog saturated nrog volatile odorous Cheebtsam, thiab khiav tawm raws li ib tug tshwm sim. nws ib nrab siab piv, thiaj li ua tiav Lub hom phiaj ntawm kev tshem tawm cov ntxhiab tsw.

The vegetable oil treated by the above "process" is called refined oil.

Cov npe ua tiav cov npe ntawm cov khoom siv ua kom zoo dua qub

Cim npe nrov: crude zaub roj refining thawj theem, Tuam Tshoj, manufacturers, lwm tus neeg, Hoobkas, yuav, pheej yig