What are the causes of bubbles in the paper industry?

? Bubbles can often be seen in our lives. The colorful bubbles we played when we were young were very light and crystal clear. They can float in the air or fly with the wind, which is simply beautiful. Shower gel for bathing, white foam, soft and fragrant, soothing body and mind; There are many bubbles when boiling water, but they are all fleeting. There are many things in life that I won't list one by one. But nothing is still. In industrial production, the bubble is not so beautiful. In the papermaking industry, a large number of foams will be produced during papermaking and pulping. If it is not controlled in time, the amount of foam will continue to increase and eventually overflow with the pulp, which will not only hinder normal production, but also affect the quality of paper. Maybe everyone is curious about the cause of the bubble. How did a lot of bubbles form? Today I will talk about several reasons for the bubble.

? The first reason is that the foam in papermaking white water mainly comes from many chemical additives added to the pulp pool during beating, such as filter aid, retention aid, wet strength agent, sizing agent and so on. In the process of beating and closed circulation of white water, bubbles are easily generated.

? The second reason: because the slurry contains very fine fibers and pigments and fillers, these solid substances provide carriers for the adsorption of bubbles. Depending on the fiber, some are adsorbed on the surface of the fiber and some are infiltrated into the fiber. At the same time, fine pigments and fillers are easy to reunite on the surface of bubbles, which enhances the strength of bubbles.

? Reason 3: There are some tiny bubbles scattered in the slurry. When there are a lot of bubbles in the slurry, the bubbles are easy to merge, and the small bubbles are easy to merge into large bubbles. Large bubbles are easy to float on the liquid surface because of their low density, which is what we usually see. Compared with the tiny bubbles adsorbed on the fibers in the slurry, the bubbles on the liquid surface are larger.

? Reason 4: Foam on the liquid surface may also be caused by factors such as the slurry is not cleaned, the fiber is not fully swollen, the slurry falls like a waterfall, the air of the slurry pump leaks, and a large amount of air is mixed with water to produce foam.

? These are the reasons for the bubble in the paper industry, and the bubble problem is a headache for businesses. Xinwancheng paper defoamer is specially designed for this problem, which can effectively solve the foam problem. Interested parties can pay attention to Xin Wancheng.