Reactor for preparation of ammonium polyphosphate

Details Reactor for preparation of ammonium polyphosphate Reactor for preparation of ammonium polyphosphate

1980-01-07

1981-02-10

Scovronek, Joseph

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

With means applying electromagnetic wave energy or...

422202, 422203, 422231, B01J 1000, F28D 702

Patent

active

042501474

ABSTRACT:
A novel reactor configuration is described for the conversion of wet-process phosphoric acid and anhydrous ammonia into an ammonium polyphosphate product having a high proportion of the total P.sub.2 O.sub.5 in the polyphosphate form. This novel reaction system, includes a first reaction stage comprising a jacketed free floating reaction tube having an inlet end which terminates inside the jacket and a second reaction stage comprising a vertically oriented reaction chamber equipped with an internal heat exchange coil and a sparger for injection of ammonia. A portion of the reactant ammonia which has been preheated in the heat exchange coil of the second reaction stage is injected into the first reaction stage via an injection tube which extends through the jacket into the inlet end of the reaction tube, said injection tube being sized to leave an annular space for fluid communication between the reactor tube and the jacket. All of the phosphoric acid required for the final nitrogen to phosphate ratio is passed into the jacket of the first reaction stage at a point remote from the inlet end of the reaction tube such that it is preheated by contact with a substantial portion of the external surface of the reaction tube before it passes into the reaction tube via the annular space between the ammonia injection tube and the reaction tube. The remaining ammonia required for the final nitrogen to phosphate ratio is added to the second reaction stage via the sparger which also functions to agitate the reaction mass contained therein. Additional cooling of the reaction mass in the second reaction stage is provided by recycle of externally cooled reaction product.

REFERENCES:
patent: 2902342 (1959-09-01), Kerley, Jr.
patent: 3153578 (1964-10-01), Taylor
patent: 3366460 (1968-01-01), Christensen
patent: 3516800 (1970-06-01), Yamamoto et al.
patent: 3950495 (1976-04-01), Ries

Affiliated with

Also associated with

Rating

Reactor for preparation of ammonium polyphosphate 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 for preparation of ammonium polyphosphate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reactor for preparation of ammonium polyphosphate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1665331