Cotton Seed Oil Refining Txheej txheem
Cottonseed roj kuj yog cov roj ua noj tseem ceeb. Txawm li cas los xij, wool paj rwb roj muaj gossypol (cov ntsiab lus kwv yees li 1 feem pua), colloid thiab siv quav ciab (cov ntsiab lus sib txawv nyob ntawm lub plhaub cov ntsiab lus ntawm cov roj ua cov paj rwb), thiab nws cov khoom tsis zoo, yog li nws tsis haum rau kev noj ncaj qha, thiab nws cov txheej txheem refining kuj nyuaj.
1. Rough refining paj rwb roj refining txheej txheem (nruam)
lye dej
↓
Pom cov roj crude-→ preheating- → roj-alkali ratio- → sib tov tshuaj- → desoaping- → ntxuav- → dehydration- → ziab- → paj rwb roj
↓
Soapstock Wastewater
Kev khiav hauj lwm tej yam kev mob: impurity nyob rau hauv lim roj crude tsis ntau tshaj {{{{10}}}}}}.2 feem pua, lye concentration yog 20~28 degree Bé, tshaj alkali yog 10 feem pua ~ 25 feem pua ntawm theoretical alkali, desoaping kub yog 7{9{25}degree dej ~ 22 degree, dej ntxiv 01 / h, roj inlet siab 0.1 ~ 0.3 MPa, roj qhov hluav taws xob rov qab siab 0.1 ~ 0.3 MPa, ntxuav kub 85 ~ 90 degree, ntxuav cov dej ntxiv yog 10 feem pua ~ 15 feem pua ntawm cov roj ntim, lub cev qhuav dej rov qab siab 0.15 MPa, qhov kub thiab txias tsis qis dua 90 degree siab, cov roj ua haujlwm tsis yog 0. 70 degree.
2. Refining edible roj refining txheej txheem
phosphoric acid lye soapstock lye
↑ ↓
Pom cov roj crude-→ preheating- → mixing- → roj-alkaline ratio- → sib tov tshuaj- → desoaping- → sib tov
↓
Filtration ←-distillation deodorization ←-filtration ←-adsorption decolorization ←-dehydration ←-ntxuav ←-soap tshem tawm
↓
Refined ua noj roj Dej vapor Pov tseg av nplaum Adsorbent Wastewater Soft water Soapstock
Cov ntsiab lus tseem ceeb ntawm kev ua haujlwm: kev khiav hauj lwm ua ntej alkali refining yog tib yam li cov roj crude refining, refining lye concentration yog 6 ~ 12 degree Bé, ntxiv tus nqi yog 1 feem pua ~ 3 feem pua ntawm cov roj ntim, re-refining kub yog 7 0 ~ 90 degree, thiab roj qhov hluav taws xob rov qab siab yog 0.15 MPa. Cov kev khiav hauj lwm ntawm kev ntxuav, decolorization thiab deodorization yog zoo ib yam li cov txiv laum huab xeeb roj refined edible roj. Yog tias degreasing tau ua tiav tom qab deodorization, qib ntawm cov roj tiav lawm yuav ua kom zoo dua lub tub yees rooj roj (cov roj zaub xam lav). Cov txheej txheem thev naus laus zis tom qab deodorization txheej txheem yog:
┌ → soft fat
Deodorized paj rwb roj-→ txias thiab crystallization-→ loj hlob muaju-→ lim-┤
└ → txias rooj roj
Kev khiav hauj lwm tej yam kev mob: txias crystallization kub 5 ~ 10 degree, kub sib txawv ntawm cov dej txias thiab roj txog 5 degree, crystallization sij hawm 8 ~ 12 teev, siv lead ua loj hlob lub sij hawm 10 ~ 12 teev.
