MindMap Gallery Chemistry-Pulping Principles
This is a mind map about chemistry-pulping principles, light chemical major, pulping principles course. Pulping is a process of converting plant fiber raw materials into pulp using chemical or mechanical methods.
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This Valentine's Day brand marketing handbook provides businesses with five practical models, covering everything from creating offline experiences to driving online engagement. Whether you're a shopping mall, restaurant, or online brand, you'll find a suitable strategy: each model includes clear objectives and industry-specific guidelines, helping brands transform traffic into real sales and lasting emotional connections during this romantic season.
This Valentine's Day map illustrates love through 30 romantic possibilities, from the vintage charm of "handwritten love letters" to the urban landscape of "rooftop sunsets," from the tactile experience of a "pottery workshop" to the leisurely moments of "wine tasting at a vineyard"—offering a unique sense of occasion for every couple. Whether it's cozy, experiential, or luxurious, love always finds the most fitting expression. May you all find the perfect atmosphere for your love story.
The ice hockey schedule for the Milano Cortina 2026 Winter Olympics, featuring preliminary rounds, quarterfinals, and medal matches for both men's and women's tournaments from February 5–22. All game times are listed in Eastern Standard Time (EST).
Pulping principle
- basic concept
1. Pulping is the process of converting plant fiber raw materials into pulp using chemical or mechanical methods.
2. Traditional pulping methods include sulfate method, sulfite method and alkali method.
3. During the pulping process, fiber raw materials undergo steps such as washing, soaking, cooking, and screening.
4. During the pulping process, the use and dosage of chemicals need to be selected and adjusted according to raw materials and production requirements.
5. During the pulping process, mechanical force can destroy the structure of plant fibers and improve the quality of pulp.
6. In the pulping process, pulp washing and purification are important links, which can remove impurities and harmful substances.
7. In the pulping process, pulp drying and storage are also important links to ensure the quality and stability of the pulp.
8. In the pulping process, environmental protection and resource utilization are also factors that need to be considered, such as wastewater treatment and waste utilization.
- wood
- tree species
1. Tree species have an impact on the pulping process, and different processes need to be adopted according to different tree species.
2. Different tree species have different fiber morphologies and chemical compositions.
3. The pulping yield and pulp quality of different tree species are also different.
4. Understanding the characteristics of tree species is of great significance to the pulping process and pulp quality.
- Other sources of fiber
- Waste paper
- Bamboo
- Bagasse, etc.
- Mechanical pulping
- Refining
- Refining methods for wood
- Refining methods for other cellulose sources
- Filter
- Single layer screening
-Multi-level filtering
- Cleaning and bleaching
- Cleaning process
- Bleaching process
- Chemical pulping
- Sulfuric acid method
- Sulfuric acid pulping process
- Sulfuric acid black liquor recovery
-Alkali method
- Caustic soda pulping process
1. Raw material washing: use washing equipment to remove impurities.
2. Pulping: Crush raw materials into small pieces for subsequent processing.
3. Soaking: soaking in lye to separate the fibers.
4. Washing: Remove residue and impurities.
5. Bleaching: Make the slurry white and flawless.
- Alkaline black liquor recovery
- Organic solvent method
- Semi-chemical pulping
- Oxygen cooking method
- Hot alkali method
- Peroxidation method
- Wood pretreatment equipment
- Peeling machine
- Peeling machine
- Slicer
- Refining equipment
- High consistency refiner
- Low consistency refiner
- Vibration screening machine
- Cleaning and bleaching equipment
- Cleaner
- Bleach tower
- Bleaching and filtering equipment
- Paper industry
- coated paper
- wrapping paper
- Gravure printing paper
- Pulp production
-Pulping wastewater treatment
1. Pulping wastewater contains a large amount of organic matter and needs to be biodegraded.
2. Chemical pulping wastewater needs to be neutralized and the pH value adjusted.
3. After advanced treatment, pulping wastewater can be discharged or reused up to standard.
- Pulp black liquor treatment
1. Black liquor treatment can reduce environmental pollution and recover fibers and chemicals.
2. Black liquor treatment commonly uses methods such as evaporation concentration, combustion concentration and chemical treatment.
3. Black liquor treatment is an important environmental protection link in pulping production and requires a large investment of money and time.
- Cardboard production
- Corrugated cardboard
- cardboard