| 摘要 |
<p>The invention concerns a method for intensification of the operation of a Yankee press in a soft-tissue machine, in which Yankee press the web (W) is pressed in one or several nips formed between a Yankee cylinder (10) and a press roll (13,14) and the web (W) is dried on the Yankee cylinder (10) by against the web (W) blowing hot air that is introduced through the Yankee hood (15). In the method, a blow device (50) is used which blows hot and humid air against the web (W). The blow air for the blow device (50) is taken from the outlet/heat recovery of the air system of the Yankee hood (15), and the exhaust air from the blow device (50) is returned to the outlet/heat recovery of the air system of the Yankee hood (15). Air is blown against the web (W) at the proximity of the nip formed between the Yankee cylinder (10) and the first press roll (14), before and near the first press nip, in the running direction of the web. The invention also concerns a device for carrying out the method for intensification of the operation of the Yankee press in a soft-tissue machine, which Yankee press comprises a Yankee cylinder (10) and one or several press rolls (13,14) as well as a Yankee hood (15). The device is a blow device (50), which comprises a blow chamber, an exhaust chamber, and blow nozzles for the blowing of hot and humid air against the web (W) and exhaust-air ducts for the removal of the air. The blow chamber of the blow device (50) communicates with the outlet and/or heat recovery of the air system of the Yankee hood (15) for the taking of the blow air. The exhaust chamber (52) of the blow device (50) communicates with the outlet and/or heat recovery of the air system of the Yankee hood (15) for returning of the spent air, and the blow device (50) is placed at the proximity of the nip formed between the Yankee cylinder (10) and the first press roll (14) before and near the first press nip. <IMAGE></p> |
