Pulping Technologies for Recycled Paperboard

Posted August 18, 2016 in Pulp and Paper Industry by Elizabeth Tischer

With the cost of raw materials on the rise, pulping technologies need to look beyond traditional means to produce paperboard. After all, legislation is pushing for stricter changes and waste disposal is a hot topic item in every industry. This means we must find an alternative approach that lowers the impact we are having on the environment at all times with a viable solution. As most of us are aware, the paper pulp industry has historically viewed as one that contributes heavily to pollution.

One of the solutions for pulping technologies is the chemical method. This approach uses fiber glues like hemi cellulose and dissolves things into a paste. As part of paper pulping, it begins by shredding and breaking down the wood fibers. Then the pulping chemicals are added. This mixture is placed into a cooking vessel and the chemical destruction begins as the pulping chemicals breakdown and then the matter is moved to an area where it dries.

But for a greener approach, there are some sustainable technology options that can reduce the impact. Take for example biopulping. With this process, you end up with less wastewater and there is a reduction in the amount of exhaust released into the air. Instead, you have enzymes that breakdown the wood chips. The pulper rotors then mix and cook things so you don’t have to include any chemicals into the vat.

Organosoly pulping is a third approach. In this case, high pressure and temperature is combined with organic solvents in the vast. This helps to break down the cellulose and lignin that leaves behind the pulp that is necessary for producing paper products. This is a great choice in cases where your need modern pulping technologies, and are looking at recycled and alternative solutions like kenaf or hemp fibers. Just make sure that you pay close attention to the process as the type of material that you are using will determine temperatures and the amount of solvents that are necessary for breaking down the pulp.

The pulping rotors are another area of concern. With pulping and detrashing their main focus, you want to consider your options from screen plates to drum pulpers and extraction plates. The goal is to understand that each of the pulper rotors are designed to handle a different task during the production process.

You also need to pay close attention to the moisture in the pulp with these pulping technologies. Due to the extreme temperatures, vaporization does occur and can lead to condensation. As you cool off the slurry, it can reintroduce the condensation and this can impact the mixture that you are making and cause additional problems for you.

Take the time to consider each of the different approaches you can take when you’re doing this. Keep these recycled paperboard pulping technologies in mind. Then keep in mind that there are new pulping technologies coming out all the time. As the technology changes ,you can end up with a better fiber yield that will allow you expand on your production efforts. 

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