Podcast
Questions and Answers
Which process is the most commonly used pulping process worldwide?
Which process is the most commonly used pulping process worldwide?
- Sulfate pulping process
- Mechanical pulping process
- Soda pulping process
- Kraft pulping process (correct)
What percentage of lignin is dissolved during the Kraft pulping process?
What percentage of lignin is dissolved during the Kraft pulping process?
- 10%
- 50%
- 80% (correct)
- 100%
Which chemicals are used as cooking liquor in the Kraft pulping process?
Which chemicals are used as cooking liquor in the Kraft pulping process?
- NaOH and NaCl
- NaOH and Na2S (correct)
- NaOH and Na2CO3
- Na2O and Na2CO3
What is the main purpose of using sodium sulfide (Na2S) in the Kraft pulping process?
What is the main purpose of using sodium sulfide (Na2S) in the Kraft pulping process?
Which chemical is the key for completing the cooking process in the Kraft pulping process?
Which chemical is the key for completing the cooking process in the Kraft pulping process?
Which of the following is NOT a benefit of using sodium sulfide (Na2S) in the Kraft pulping process?
Which of the following is NOT a benefit of using sodium sulfide (Na2S) in the Kraft pulping process?
What percentage of hemicelluloses is dissolved during the Kraft pulping process?
What percentage of hemicelluloses is dissolved during the Kraft pulping process?
Which of the following is a key factor in the Kraft pulping process?
Which of the following is a key factor in the Kraft pulping process?
What happens to lignin during the Kraft pulping process?
What happens to lignin during the Kraft pulping process?
What is the main purpose of the Kraft pulping process?
What is the main purpose of the Kraft pulping process?
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