초록 ▼

A deaeration vessel has a partition wall dividing the hollow vessel body into first and second portions, and defining a weir with a top surface establishing the level of pulp suspension in the vessel body. Turbulence in the deaerated pulp is minimized by providing the outlet for deaerated pulp immed

A deaeration vessel has a partition wall dividing the hollow vessel body into first and second portions, and defining a weir with a top surface establishing the level of pulp suspension in the vessel body. Turbulence in the deaerated pulp is minimized by providing the outlet for deaerated pulp immediately adjacent the partition wall, in the bottom of the vessel body first portion (on the same side of the weir as the inlet conduits for the suspension being deaerated). The weir is preferably configured so that the top surface, defining the liquid level within the vessel, overlies the outlet. A partition wall may extend substantially linearly at an angle of about 60°to the bottom of the vessel, or it may have a vertical bottom with a top extending at an angle to the bottom, or it may be continuously curved from the vessel bottom to the top surface, about a horizontal and/or vertical axis. The outlet may have an enlarged, non-circular configuration at the bottom, which then tapers to a circular outlet conduit.

대표청구항 ▼

A method of deaerating cellulose pulp having a consistency of about 0.1-3% utilizing a hollow vessel having a weir disposed therein defining a liquid level within the vessel interior, and dividing the vessel interior into first and second portions, comprising the steps of: introducing pulp suspensio

A method of deaerating cellulose pulp having a consistency of about 0.1-3% utilizing a hollow vessel having a weir disposed therein defining a liquid level within the vessel interior, and dividing the vessel interior into first and second portions, comprising the steps of: introducing pulp suspension into the vessel first portion above the liquid level; withdrawing gas which separates from the pulp suspension from above the liquid level; withdrawing liquid that passes over the weir from the second portion of the vessel; and withdrawing deaerated pulp from the vessel first portion through an outlet immediately adjacent the weir so as to minimize turbulence in and of the deaerated pulp suspension withdrawn from the vessel first portion. A deaeration vessel comprising: a hollow vessel body having a bottom and a top; means for introducing fluent material to be deaerated into said vessel, above said bottom, a fluent material level being established in said vessel body; means for withdrawing gas separated from said fluent material above the level of fluent material in said body; a partition wall dividing said hollow vessel body into first and second portions and defining a weir and having a top surface which establishes the level of fluent material in said vessel body, said partition wall extending upwardly from said bottom; said means for introducing fluent material disposed in said first portion of said vessel body; and outlet means for deaerated fluent material disposed in said bottom of said first portion of said vessel body immediately adjacent said partition wall, so as to minimize turbulence in and of the deaerated pulp suspension withdrawn therethrough.