Difference Between Kraft and Sulfite Pulping

The key difference between kraft and sulfite pulping process is that kraft pulping involves the treatment of wood chips with a hot mixture of water, sodium hydroxide and sodium sulfide whereas sulfite pulping involves the treatment of wood chips with sulfite or bisulfite salts of sodium, calcium, potassium, magnesium ...

1. What is the sulphate kraft process?
2. What is sulfite paper?
3. What is kraft pulp used for?
4. Which of the following is the advantage of kraft pulping technology?
5. Is Kraft Paper eco friendly?
6. What is the pulping process?
7. Why is kraft paper Brown?
8. What is sulfite paper used for?
9. What is sulfite liquor?
10. What is Kraft card?
11. Why lignin is removed from pulp?
12. What does Pulp mean?

What is the sulphate kraft process?

The kraft process (also known as kraft pulping or sulfate process) is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibers, the main component of paper. ... It is the dominant method for producing paper.

What is sulfite paper?

Sulphite Paper is also referred to as construction paper, but don't be confused. ... Sulphite is a process that extracts the lignin from wood chips and produces pure cellulose fibers. This means that sulphite paper is a smooth, white and inexpensive drawing paper that is perfect in any art room or home-school environment.

What is kraft pulp used for?

This includes such things as printing and writing papers; tissues, coffee filters and other consumer products; and specialized applications like fibre cement and Japanese washi paper. The particular type of kraft pulp that Catalyst makes and sells is referred to as northern bleached softwood kraft or NBSK pulp.

Which of the following is the advantage of kraft pulping technology?

A modern Kraft pulp mill produces more heat and power than necessary for the process. In existing mills, improved Process Integration typically enables reduction of heat consumption by 15–30%. Over time, specific energy consumption can be decreased in existing mills thanks to Process Integration studies.

Is Kraft Paper eco friendly?

Benefits of Kraft Paper

Apart from its superior strength, it is 100% eco-friendly. It degrades naturally within a few weeks, decomposing just like leaves that fall off a tree. It leaves no impact on the environment, but no one needs to wait that long.

What is the pulping process?

Pulping is the process where fibers are separated and treated to produce pulp. The wet pulp is then converted into paper at an integrated pulp and paper mill or is dried and transported from the pulp mill to a paper mill.

Why is kraft paper Brown?

Brown kraft paper is normally made from unbleached kraft pulp. A white kraft paper, by contrast, is normally made from bleached kraft pulp. Since bleaching weakens paper, kraft papermaking companies make their strongest products in the natural brown color.

What is sulfite paper used for?

Sulfite pulp remains an important commodity, especially for specialty papers and as a source of cellulose for non-paper applications. It is used to make fine paper, tissue, glassine. and to add strength to newsprint.

What is sulfite liquor?

(or spent pulping liquor), a by product in the manufacture of wood pulp by the sulfite process. Alcohol and nutrient yeast are obtained from sulfite waste liquor. ...

What is Kraft card?

From greetings cards to paper embellishments, kraft card is a versatile crafting essential that can be used with stamps, paint, pens, embossing and die-cutting techniques. Kraft card is made out of a porous and light texture that makes it easy to transform into the perfect embellishment.

Why lignin is removed from pulp?

(Lignin, the natural "glue" that holds cellulose fibers together and stiffens plant stems, causes paper made of wood pulp to weaken and discolor rapidly if not removed in the pulp mill; but the removal processes are harsh, and shorten the fibers on which the paper's strength depends.) ...

What does Pulp mean?

1 : the soft juicy or moist part of a fruit or vegetable the pulp of an orange. 2 : the part of a fruit or vegetable that is left after the liquid has been squeezed from it apple pulp. 3 : a material prepared usually from wood or rags and used in making paper.