Application of continuous cooking energy-saving technology improved by melamine paper
When it comes to the continuous cooking energy-saving technology improved by melamine paper, many people are not familiar with this technology. Now Decorative Materials Co., Ltd. will give you a brief introduction: The continuous cooking technology of melamine paper is improved by adding white It is done by countercurrent cooking at the later stage of cooking. In a Camille continuous digester with MCC technology, the cooking zone can be divided into a co-current cooking zone and a counter-current cooking zone, followed by counter-current diffusion washing and cold spraying. The addition of white liquor is divided into three parts. About 65% of the total white liquor is added to the immersion section, about 15% of the white liquor is added to the co-current cooking zone, and about 20% of the white liquor is added to the counter-current cooking zone. The time allocation is generally 30 minutes in the dipping section, 60 minutes in the co-current cooking zone, and about 60 minutes in the counter-current cooking zone. With technical cooking, the kappa number of softwood pulps can generally be reduced to 25 without causing severe losses in yield and strength. The technology mainly applies two principles of deep delignification: First, by adding white liquor in stages, the concentration of lye is low at the beginning of cooking, and the concentration of lye is higher at the end of cooking. The concentration is relatively uniform; the second is to use countercurrent cooking, and at the same time, the concentration of dissolved lignin in the cooking liquid is reduced by continuous extraction of black liquor in the countercurrent cooking zone. When kraft cooking, the temperature in the co-current cooking zone is generally 169°C, the temperature in the counter-current cooking zone is 171°C, and the temperature in the counter-current washing zone is 140°C. The above is the introduction we have made for you. Decorative Materials Co., Ltd. welcomes you to come and interview business!
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