bleaching powder for used oil:
1.bleaching powder characters:
1) strong decoloring-ability
2) good adsorption
3) low free acid
2. bleaching powder working:
emerge and separate some matters, such as pigment, colloid, impurity,
dram heavy metal in lipid which can cause oxidant and activator toxic.
3. bleaching powder usage:
Broadly speaking, bleaching powder finds use in following fields:
1) Refining of Vegetable oils like :
Cottonseed, Soyabean, Sunflower, Rapeseed, Mustard, Peanut, Coconut,
Corn, Olive, Ricebran, Palm, Linseed, Castor, tung oil and so on.
2) Refining of hydrogenated vanaspati ghee oils, Margarine & shortening.
3) Refining of Animal Fats like tallow oil, fish oil, lard oil.
4) Refining of Mineral Oils like:
- paraffin and waxes
- insulating oil
- rolling oil
- white oil
- waste oil (lubricating oil)
- vaseline
- olefin
4. bleaching powder specs:
|
refining ability |
pct min 93 |
|
partical size(-2μm) |
pct min 95 |
|
free acid(NaOH) |
pct max 0.25 |
|
moisture |
pct max 9 |
|
PH |
4 |
|
specific surface area |
285m2/g |
|
density |
0.59g/ml |
|
heavy metal(pb) |
pct max 0.005 |
|
arsenic content |
pct max 0.0005 |
