TH50A - Birth prevention movement And remove the solid sludge during the evaporation of the blacklinker from the factory running once a year. - Google Patents

Abstract

This invention is concerned with the prevention of solid sludge formation and removal during continuous multi-stage evaporation. Of black liquor from a single-year plant, where the previously concentrated black liquor in the first step is It is heated by steam coming directly from the radiator and subsequently heated with the vapor generated by evaporation and then passed through the forcing phase. (forced-circulation stage) in the corridor of the liquor (liquor path)

Claims (3)

1. Evaporation Process Black Liquor from a single plant in a multi-stage evaporation process with prevention and removal of solid sludge where one of the evaporation steps is heated by steam. Coming directly from the radiator and another evaporation process is heated With the water vapor from evaporation and where the blacklinkers are brought in The movement was pre-concentrated. With a unique look at the back Pre-concentrated curls were further concentrated against the vapor. Continuously in two evaporation stages Rotating Circulate with force (Forced circulation phases) where each forced circulation stage can be interchanged. Without interruption to complete the process of circulation With the first or final forced force in the liquor flow path and in the first forced circulation, the black liqueur is concentrated to a solid content below 30% by weight. 2. The process as in Claim 1, which is unique in that The blacklickers to execute the movement were pre-concentrated. To contain 15 to 25% solids by weight in the process Circulating with forced first step in the liquor flow path 3.The movement, as in claim 1 or 2, is characterized by the fact that the pre-concentrated ballickers are heated. Before entering the forced rotation period (3 claims, 1 page, 2 photos)