| 摘要 |
A process for the emptying of pulp from the boiler of a batchwise cellulose boiler, in which the boiling fluid in the final stage of the boiling cycle is passed to a settling vessel under pressure, and the boiler is subsequently de- gassed in essentially the same way until it attains atmospheric pressure or negligibly higher. This process is especially noteworthy in that, during the said de-gassing, the washing liquid, preferably filtrate from filter washing, is transferred to the boiler for pre-washing of the pulp at a relatively low temperature, preferably such that the temperature in the mixture of wash liquid and pulp is 105 degrees Celsius or lower, whereupon a flow of steam is taken from the settling vessel to the boiler in order to blow out its pulp content at a temperature of 90 - 105 degrees Celsius, which amounts to so-called cold blowing. <IMAGE> |
