Feed system for phosphoric acid production with decreased foamin

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – With means applying electromagnetic wave energy or...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

55178, 137171, 422198, 422227, 422232, 422234, 423320, B01J 1918, C01B 25222

Patent

active

042580072

ABSTRACT:
A system for the preparation of phosphoric acid from phosphate rock and sulfuric acid, includes in combination a first reaction vessel containing a first slurry comprising calcium sulfate hemihydrate, monocalcium phosphate and phosphoric acid, a second reaction vessel containing a second slurry comprising calcium sulfate hemihydrate, circulation means including a draft tube disposed centrally in each of said vessels and an agitator positioned axially in each of said vessels within said draft tube, a first conduit interconnecting said first and second reaction vessels for conducting said first slurry from said first reaction vessel to said second reaction vessel, a second conduit interconnecting said vessels for conducting said second slurry from said second reaction vessel to said first reaction vessel, an inlet pipe for introducing phosphate rock and phosphoric acid to said first reaction vessel, and wherein a vent is connected to said inlet pipe to permit escape of gases and, thus, increasing the rate of flow of said phosphate rock and phosphoric acid to said first reaction vessel.

REFERENCES:
patent: 290491 (1883-12-01), Snell
patent: 1836672 (1931-12-01), Larson
patent: 2078627 (1937-04-01), Black et al.
patent: 2768704 (1956-10-01), Cronkhite
patent: 2968544 (1961-01-01), Zeitz et al.
patent: 3148948 (1964-09-01), Lutz
patent: 3173763 (1965-03-01), Miller et al.
patent: 3257168 (1966-06-01), Chelminski
patent: 3418077 (1968-12-01), Robinson
patent: 3453076 (1969-07-01), Long et al.
patent: 3522003 (1970-07-01), Lopker
patent: 3522004 (1970-07-01), Lopker
patent: 3653826 (1972-04-01), Ishihara et al.
patent: 3726647 (1973-04-01), Somerville
patent: 3939248 (1976-02-01), Caldwell
patent: 3952765 (1976-04-01), Cohan
patent: 4053563 (1977-10-01), Somerville
Slack, "Phosphoric Acid, vol. 1, pp. 279-284, 369-386, Marcel Dekker, N.Y., 1968.

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

Feed system for phosphoric acid production with decreased foamin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Feed system for phosphoric acid production with decreased foamin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feed system for phosphoric acid production with decreased foamin will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2408074

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