What are the main measures for the reuse of condensed water in melamine paper

by:I.DECOR     2022-04-11

Condensed water: refers to the liquid water formed by the condensation process of water vapor (ie gaseous water), which is condensed water. Melamine paper is a kind of plain-colored base paper or printing decorative paper impregnated with amino resin and dried to a certain extent, and has a certain resin content and volatile content. The following melamine impregnated paper will take you to understand the main measures for the reuse of condensed water in melamine paper. 1. Part of the mixed condensed water can be used as washing machine water and squeezing spray pipe water, and can be used for washing, screening and washing of unbleached pulp after oxygen bleaching. The remaining mixed condensate water can be sent to the hot water tank of the caustic chemical section, and used as the washing of the slag filter and the lime mud filter, the spray water of the lime mud tank and the digester, and other various spray and dilution water. The stripped condensate is usually used for washing of the unbleached stock. Some pulp mills have also found that adding air-stripped condensate to the mixed condensate prior to distribution for use works well. 2. If the condensed water from each effect of the evaporator and the condenser is neither separated nor stripped, the condensed water should be managed and used separately according to the degree of cleanliness. Cleaner process condensate water is directly used for washing, screening and causticizing of unbleached pulp, and sewage condensate water is sent to air stripping treatment.
3. The cleaner condensed water can be reused in the warm water pipe or warm water pool. The use of warm water pools is very common today and improves water management. All clean condensate can be combined into a warm water tank and reused throughout the mill. Generally speaking, the temperature of warm water should be kept in the range of 45-50℃, which can meet the water requirements in most cases.

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