Cost-benefit Analysis of Paper Pulp Mill

Generally, we must make detailed cost-benefit analysis before building a paper pulp plant project. What factors do we need to consider before starting the pulp plant? As a professional paper pulp solution provider, CNBM suggest you make a list about your project, there are some common factors should be included, such as fiber materials, paper pulp processing, application and paper pulp making machine price, etc.

Fiber materials

Fiber materials for paper pulp making include wood, wheat straw, bamboo, sugarcane bagasse, bamboo, reed, jute, cotton, waste paper and etc. As the raw materials of paper pulp making, it must have features like high fiber content, sufficient resources, convenient transportation and cost-effective production.

1. Fiber content

The most of fibers materials for paper and pulp making are plant fibers, plant fibers are made up of cellulose, hemicellulose, lignin, extraction, ash and etc. The core of the paper pulping process is delignification and retention of cellulose and hemicellulose.

The annual output of various fiber materials for paper pulp making

Raw materials for paper pulping can be divided into wood fiber and non-wood fibers, there are some standards for materials selection.

• For wood fibers: short growth cycle; easy to plant and high added value; high fiber content, etc.
• For non-wood fibers: therophyte; high fiber content; easy to transport, etc.

2. Sufficient resources

Plant fibers all have a certain growth period, ensure sufficient material of paper pulp plan is very important. For straw pulp making, seasonality should be put into consideration, collect the raw materials in a certain period and stock them well.

3. Convenient transportation

Due to the regionalism, make sure your raw material is easy to transport. Especially for straw pulp making, straw fiber materials has smaller transportation radius, which means you better choose local material. For example, if you start a paper pulp plant near the bamboo forest, the bamboo will be the most suitable raw material.

4. Cost-effective production

Of course, the region is not your only rule for material selection. So the selection of material is usually decided by real situation, for your benefit, just choose the most cost-effective material you have.

Paper pulp processing

As we all know, there are chemical pulping, mechanical pulping and chemi-mechanical pulping in the paper and pulp industry. There is no doubt that chemical pulping is more popular in the paper pulp production. Consider the different working condition of paper pulp mill, the paper pulping selection is still up to you. Three pulp processing comparison by CNBM as following:

• Chemical pulp: use chemicals and heating separate plant fibers into paper pulp. It has low pulp yield, long fiber length, good strength. Chemical pulping include lime pulp process, soda pulping, kraft pulping, sulfite pulping process, etc.
• Mechanical pulp: use mechanical method to grind fiber materials into paper pulp. Common types include SGW, RMP, TMP.
• Chemi-mechanical pulp: chemi-mechanical pulping is a combination of chemical pulping and mechanical pulping. Apply for wood fiber or non-wood fiber pulp making. Common types include CTMP, CMP, APMP, etc.

Related paper pulper machines

In general, the paper pulper machines are decided by your pulp processing. Take chemical pulping as an example, it has pulp cooking, pulp washing, pulp screening, pulp bleaching and etc. There are a lot of paper pulp machines to choose from, which one is more proper? You can choose suitable one according to your working condition, capacity, materials, cost and etc.

• Pulp cooking equipment: pulp digester is main equipment in the paper pulp cooking process. According to the pulp cooking process, we can choose displacement digester system and continuous tubular digester and paper pulper for waste paper pulping. In addition to, blow tank and heat exchanger are also required in the pulp cooking process.
• Pulp washing equipment: common pulp washing equipment include vacuum drum washer, twin roll press, single screw press, disc filter, gravity disc thickeners, etc.
• Pulp screen equipment: inner-flow pressure screen, medium consistency pressure screen, outward-flow pressure screen, pressure filter, pressure knotter, fiber classification screen, etc.
• Pulp bleaching equipment: medium consistency mixer, double roller mixer, and etc. These equipment are actually optional in the paper pulping process. The paper pulp can be applied to different types of papermaking, such as writing paper, tissue paper, printing paper, newspaper, security paper, paperboard, and so on. According to the paper pulp applications, you can decide if your pulp should be bleached or not.

Besides, paper pulper machine price is also vital, compare different paper pulper machine manufacturer or supplier fully, learn how to buy cost-effective paper pulper machine? and get your ideal choice.

Paper pulp uses

The paper pulp uses can be simply classified into two directions including market pulp and material for paper making. In general working condition, paper making and pulp making are completed in a paper and pulp mill. But for some individual pulp mills, they just sell paper pulp board directly. You should be clear about your paper pulp uses and set suitable paper pulp plant.

In conclusion

In a word, paper pulp plant project is necessary. if you have any questions, feel free to contact us. CNBM specializes in paper pulper machine manufacture for 50 years, we usually help clients to custom unique paper pulp plant project and provide related paper pulping machinery according to their needs. For beginner, we also list and answer the top 10 questions about paper and pulp making.