METHOD FOR TREATING OFFGASES FROM A MELAMINE PLANT

摘要

The present invention relates to a method for treating or using offgases (3) obtained in a melamine plant comprising at least one melamine synthesis reactor (1) and at least one washing unit (2) in an integrated process for urea and melamine production, wherein the offgases (3) leaving the melamine synthesis reactor (1) are fed into the washing section (2) and the washed offgases (3) leaving the washing section (2) are transferred from the washing section (2) via at least one pipeline (5) connecting the washing section (2) and the at least one urea synthesis plant (6) to the at least one urea synthesis plant (6). The method is characterized in that the washed offgases (3) leaving the washing section (2) are mixed with at least one carbamate solution (4) immediately downstream of the washing section (2) by feeding the carbamate solution (4) into the pipeline (5) connecting the washing section (2) to the urea plant (6). The invention relates further to an integrated urea-melamine plant for carrying out such a process.