Reactor to perform chemical reactions with a disintegrating disc

Paper making and fiber liberation – Apparatus – Digester

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

162 65, 162236, 162243, 162250, 241 4611, 241 4617, 422205, D21B 114, D21C 710, D21C 714

Patent

active

046120882

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The present invention concerns a reactor which permits simultaneous chemical reactions and operations of size reduction of the solid materials in suspension.
Particularly, the invention relates to a reactor suited for the mentioned operations and named "TURBOPULPER", adapted particularly for treatment in the cellulose and/or paper pulp industries. This reactor has an axial admission rotor with a radial delivery such as to create a turbulence inside the reactor. This reactor is preferably adapted to operate under pressure and has a spherical shape and may be heated (FIG. 1 and 2).
The present invention relates to a reactor for effecting chemical reactions simultaneously with operations of size reduction of solid materials in suspension,. Such a reactor is particularly usable but not exclusively, for example in the alkali-oxygen process for delignification.
As known, generally the chemical reactions are activated by a good mixing and by adequated temperatures. The reaction is still more active when conditions are created for a good "exchange of materials". Amongst these last conditions, there is the maximum possible exchange surface and interchange of the substances which must react along this surface. The general conditions summarized above are particularly difficult to attain in cases when the solid materials in suspension for the reaction are at high consistency in water or other liquid vehicles.


SUMMARY OF THE INVENTION

Particularly, these conditions must be reached in two separate apparatus operating in the pulp industry and called pulper and digester. The equipment referred to this invention provides for both these operations previously carried out in this industry by the aforesaid separate apparatuses. These apparatuses generally are not capable in the conditions to completely satisfy all the requirements of the particular applications and to have at the same time the necessary flexibility to reach the optimum or nearest to optimum working conditions with the treated materials of different characteristics.
Therefore, among the objects of the present invention is to provide a new reactor for the aforesaid uses, permitting under the mentioned conditions activation and speeding up of the chemical reactions, assuring that their effect is distributed extremely homogeneously throughout the reaction mass.
Particularly, one object of the present invention is to provide a reactor, as mentioned above, which simultaneously presents the following advantages:
(a) capability to reduce the size of the particles of the solid matters in suspension to the desired level;
(b) homogeneous distribution of chemicals throughout the mass, simultaneously with the size reduction of the solid materials in suspension;
(c) complete recycling of the contents of the reactor inside its spherical interior so that the material passes at every cycle at least one inlet zone of the chemicals fed in continuously; and
(d) possibility of indirect heating, i.e., the heating medium is not mixed with the suspension to be heated, and without the well known inconveniences deriving from the formation of deposits of the suspended materials on the hot surface and thus maintaining a high constant coefficient of heat exchange independently from the type of suspension.
According to the invention, these and other objects are realized due to the fact that the reactor provides an essentially closed environment of treatment, where, in the lower zone, a rotor preferably with axial admission and radial delivery creates a turbulence with flows normally over the whole volume of the closed environment and at the same time, performs also the said size reduction of the solid materials mixing them intimately with the suspending liquor. The closed environment, as defined by the reactor, may advantageously be put under a super-atmospheric pressure. The reactor is of an essentially spherical shape and is heated indirectly, for example by means of steam.
The presence of the mentioned rotor, operating as aforesaid creates a turbulent mot

REFERENCES:
patent: 885851 (1908-04-01), Kennedy
patent: 1849866 (1932-03-01), Roza, Sr.
patent: 2973153 (1961-02-01), Rich
patent: 3145936 (1964-08-01), Monks
patent: 3774853 (1973-11-01), Seifert
patent: 4172877 (1979-10-01), Schwaig
patent: 4422580 (1983-12-01), Shepherd et al.
patent: 4460132 (1984-07-01), Thumm et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Reactor to perform chemical reactions with a disintegrating disc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reactor to perform chemical reactions with a disintegrating disc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reactor to perform chemical reactions with a disintegrating disc will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1993987

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.