| Customization: | Available |
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| Warranty: | 1 Year for Free |
| Type: | Cultural Paper |
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Chemical Wood Pulp Cellulose Fiber Production Machine For Making Culture Writing Printing Paper
1. Overview of the Chemical Wood Pulp Machine
- A chemical wood pulp machine is a complex piece of equipment used to convert wood into pulp suitable for making writing and printing papers. The process involves using chemicals to break down the lignin and other non - fibrous components of the wood, leaving behind the cellulose fibers that form the basis of high - quality paper.
2. Key Components and Their Functions
- Digester: This is a crucial part of the machine. It's a large, pressurized vessel where the wood chips are cooked with chemicals such as sodium hydroxide (for the kraft process) or a mixture of sodium sulfite and bisulfite (for the sulfite process). The digester operates at high temperatures and pressures to speed up the chemical reactions that dissolve the lignin. For example, in the kraft process, the cooking temperature can range from 160 - 180°C, and the pressure can be around 7 - 10 bar.
- Washing System: After the pulping process in the digester, the pulp needs to be thoroughly washed to remove the chemicals and dissolved lignin. The washing system typically consists of multiple stages of washing drums or filters. These components help in reducing the chemical content in the pulp to an acceptable level, usually less than 1% of the original cooking chemicals.
- Bleaching Section: For writing and printing papers, a certain level of whiteness is required. The bleaching section uses chemicals like chlorine dioxide, hydrogen peroxide, or ozone to lighten the color of the pulp. This step is carefully controlled to avoid over - bleaching, which can damage the fiber structure and reduce the strength of the paper.
- Refining Equipment: The refined pulp then goes through a refining process. This involves passing the pulp through a series of refiners, which are essentially sets of rotating discs or cones. The refining action helps to fibrillate the cellulose fibers, improving their bonding ability and increasing the strength and smoothness of the paper.
3. Advantages of Chemical Wood Pulp for Writing and Printing Papers
- High - Quality Fiber Properties: Chemical pulping produces fibers with good length and strength characteristics. The resulting paper has a smooth surface, which is essential for high - quality printing. The fibers also have a high degree of flexibility, allowing for good ink absorption and clear print definition.
- Consistency in Quality: The chemical pulping process can be carefully controlled to produce a consistent quality of pulp. This leads to uniformity in paper properties such as thickness, strength, and color, which is crucial for printing applications where consistent paper performance is required.
4. Challenges and Considerations
- Environmental Impact: The use of chemicals in the pulping and bleaching processes can have significant environmental implications. For example, the release of chlorine - based bleaching agents can lead to the formation of dioxins, which are highly toxic. Modern chemical wood pulp machines are designed to have better chemical recovery systems and use more environmentally friendly bleaching agents like hydrogen peroxide to mitigate these risks.
- Cost: The chemical pulping process can be more expensive than mechanical pulping due to the cost of chemicals, high - energy requirements for cooking and bleaching, and the need for more complex equipment. However, the superior quality of the resulting paper often justifies the cost for applications such as high - end writing and printing papers.
Product parameters
| Product | Professional A4 Copy Printing Paper Making Machine |
| Paper Grams | 35-100g/m2 |
| Production | 14-16T/D |
| Design Speed | 180m/min |
| Running Speed | 70-150m/min |
| Dynamic Balance Speed | 300m/min |
| Dryer Diameter | Ø3000mm |
| Cylinder Diameter | Ø1800mm |
| Gauge | 3400mm |
Raw materials for paper pulps as following
Certifications
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Company information
Qingdao YiDaFa International Trade Co., Ltd is located in Free Trade Zone, Qingdao, Shandong, China. The registered capital of our company is RMB 5 million. We have 6 production areas, 129 team members, including 39 technical experts, who have rich experience in the field of paper machine design. The main products of our company cover a variety of paper machinery, paper products processing machinery and related parts. We have done this business for more than 20 years in China. In 2014, we founded international trade department in order to stand in the international market.
Our mission is to be the leader in paper machinery field. Our principle is Science, Quality and Green. As we know, environmental pollution and waste of resources are two prominent problems in the traditional paper industry. To advocate the concept of global environmental protection, each of our paper machines has the advantages of energy saving, high efficiency and reducing pollution. Especially in waste water recycling use, we have unique processing technology.
Welcome any customers from all over the world to contact us freely. It is our sincere hope that we can establish a long-term and stable friendship with our strategic partners. Then we will work and explore together to create a brilliant future.
OUR SERVICES
Packing&Shipping
FAQ:
1.How to install and maintain the machine?
Firstly, we will provide the installation guild with the machine for your reference.
Secondly, our company is responsible for training production workers for you, ensuring that the workers will be independent operation.
2.How can we get the matching accessories or wearing parts conveniently?
During the warranty, Our company can replace the accessories for free .Out of warranty,we can provide them at the preferable price. In fact, the wearing parts are standard parts that you could get it in your country at your convenience.
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