The Kraft process is also called the sulphate process , it consist of two chemicals ,Naso4 and sodium hydroxide n its a very alkaline process probably around 11. You get the wood chips n mixed them with a white liquor which is a mixture of those two chemicals and them you heat it up in a digester under pressure. Remove the valve , that process releases the fibres from the chips . So you do a series of screening pressing process and we get what is called the Black Liquor , and that black liquor is the remains of those chemicals and lignin. We remove Lignin from the wood and separate it from the fibre cos Lignin is brown and we need white paper . This liquor goes to the recovery boiler , so there's a lot of energy stored in this black liquor n can be used to power the whole process . We have to use a bleaching process to get the white paper
Yes! Green liquor is apart of "the number of other processes to recreate white liquor" as the video author describes it. So you're spraying black liquor into the recovery boiler to burn, right? The stuff that doesn't burn is called smelt. Smelt is collected in a tank below the recovery boiler called a dissolving tank.. the dissolving tank takes the smelt and dissolves it in a by-product of the caustisizing process called weak wash. After the smelt is dissolved it is called green liquor! Lime is added to green liquor in a caustisizing plant to create white liquor which is re-used at the digesters :)
Why they always say that you make paper out from the pulp? Paper is mostly made out from mechanical wood process, not cooking process. Pulp is used only for addition in paper making to increase strength. Pulp is used for so many different things other than paper.
... and no one else is impressed with the way this guy writes backwards?..... no one? Just me then EDIT: Okay not backwards but mirrored is more in line with the hand voodoo he's doing
Huge thanks from France!
The Kraft process is also called the sulphate process , it consist of two chemicals ,Naso4 and sodium hydroxide n its a very alkaline process probably around 11. You get the wood chips n mixed them with a white liquor which is a mixture of those two chemicals and them you heat it up in a digester under pressure. Remove the valve , that process releases the fibres from the chips . So you do a series of screening pressing process and we get what is called the Black Liquor , and that black liquor is the remains of those chemicals and lignin. We remove Lignin from the wood and separate it from the fibre cos Lignin is brown and we need white paper . This liquor goes to the recovery boiler , so there's a lot of energy stored in this black liquor n can be used to power the whole process . We have to use a bleaching process to get the white paper
Thank u
Nice explanation, thank you !
Who uses the knotts for energy sources
Beautifully Explained. Thankyou from Lovely Professional University India
So Much helpful!
Thanks from Pakistan!
Does green liquor also form part of the kraft process?
Yes! Green liquor is apart of "the number of other processes to recreate white liquor" as the video author describes it.
So you're spraying black liquor into the recovery boiler to burn, right? The stuff that doesn't burn is called smelt. Smelt is collected in a tank below the recovery boiler called a dissolving tank.. the dissolving tank takes the smelt and dissolves it in a by-product of the caustisizing process called weak wash. After the smelt is dissolved it is called green liquor! Lime is added to green liquor in a caustisizing plant to create white liquor which is re-used at the digesters :)
really helpful!
Why they always say that you make paper out from the pulp? Paper is mostly made out from mechanical wood process, not cooking process. Pulp is used only for addition in paper making to increase strength. Pulp is used for so many different things other than paper.
Most paper is made from chemical pulp and not mechanical pulp
... and no one else is impressed with the way this guy writes backwards?..... no one? Just me then
EDIT: Okay not backwards but mirrored is more in line with the hand voodoo he's doing
I was also wondering about how he got it right lol
I'm so distracted by the fact that he chose the same color pen as his shirt.
"American friends who like to spell things wrong" chad xD