| 摘要 |
The invention relates to an arrangement for cleaning, airflow control and where appropriate pushing away melt in air ports of recovery boilers within the paper and pulp industry. By inclining the regulating device (10) at an angle to the horizontal plane and at the same time making the piston of the regulating device run in contact with the side and upper walls (24a, 24b) and, respectively, (22) of the air port, optimum airflow control and a more compact installation can be achieved. The airflow can be adjusted more rapidly with a small regulating movement at the same time as very good penetration of the air into the furnace (4) is achieved. The regulating device is allowed to penetrate into and down into the furnace so that the regulating device can push away any melt/slag in the event of a high level of melt (3) in front of the opening (30) of the air port into the furnace (4).
|
