CA1040375A - Sulphur pelletization process - Google Patents
Sulphur pelletization processInfo
- Publication number
- CA1040375A CA1040375A CA210,688A CA210688A CA1040375A CA 1040375 A CA1040375 A CA 1040375A CA 210688 A CA210688 A CA 210688A CA 1040375 A CA1040375 A CA 1040375A
- Authority
- CA
- Canada
- Prior art keywords
- water
- vortex chamber
- nozzle
- sulphur
- pellets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
- B01J2/06—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a liquid medium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/0237—Converting into particles, e.g. by granulation, milling
Abstract
ABSTRACT OF THE DISCLOSURE
Sulphur pellets are produced by spraying molten sulphur from a vortex nozzle in the form of a downwardly diverging conical sheet or jet. The sulphur impacts on the surface of cooling water in a tank. The diverging nature of the jet and the resulting turbulent swirling action promotes the formation of pellets. Control of the size, surface texture, porosity and density of the pellets can be obtained for a vortex nozzle of any particular design by varying the supply pressure or pressure drop across the nozzle and the distance between the nozzle and the water surface.
Sulphur pellets are produced by spraying molten sulphur from a vortex nozzle in the form of a downwardly diverging conical sheet or jet. The sulphur impacts on the surface of cooling water in a tank. The diverging nature of the jet and the resulting turbulent swirling action promotes the formation of pellets. Control of the size, surface texture, porosity and density of the pellets can be obtained for a vortex nozzle of any particular design by varying the supply pressure or pressure drop across the nozzle and the distance between the nozzle and the water surface.
Description
1040375 , Background of the Invention This invention relates to the production of pellets of material and, more specifically, to the production of . .~ -i pellets of sulphur and sulphur mixtures.
A method of providing pellets of various salts, particularly those required for fertillze~s, is taught in Haak's U.S. patent 1,782,038 issued November 18, 1930.
This patent teaches a process in which cooling liquid contained in a vessel is maintained in intense rotation by a stirrer. Thé molten liquid to be formed into pellets is pouret onto a rotating tisc from which particles are thrown off into the cooling liquid.
Summary of the Invention The method of the present inventlon includes flowing a fu~ible substance such as molten sulphur through a vortex chamber 80 that it emerges in a downwartly tirected conical sheet or ~et. Thls sheet is permitted to impact on a body of coollng liquid either before or after it separates into partlcles under the lnfluence of its rotation and surface tension. By varying the dlstance between the vortex chamber and the liquid surface and by varylng the nozzle slze and pressure drop across the no7zle control of the size and surface texture of the pellets 18 obtalned.
Thls method avolds the necesslty of supplylng rotatlonal energy to the cooling liquit ant, due to the relative velocity between the conical sulphur sheet and the llquld, a great deal of turbulence is caused to promote pellet formation. The use of a vortex chamber permits par-ticulate matter to be added to the molten sulphur or other fusible substance without leading to blockage of the nozzle.
If the cooling liquid (e.g. oil, brine or pressur$zed water) in the tank is thermally stratified by cooling the lower portion and keeping the upper portion at a temperature mb/~t~ - 1 -above the fusion temperature of the sulphur, the liquid sulphur droplets will coalesce as they drift downwards to form larger pellets. As an alternative to stratification, the cooling liquid may simply f-low countercurrent to the sulphur droplets such that an acceptable temperature gradient is achieved.
Brief Description of the Drawings ., Figure 1 is a diagrammatic view of a sulphur pellet-izing plant adapted to carry out the method of Phis invention, and Figure 2 is a view of the sulphur distributing nozzle.
Descrlption of the Preferred Embodiment Referring to Figure 1, a pelletizer tank 10 contains water kept at a constant head via a line 11 and port 12.
Molten sulphur supplied by a line 16 is sprayed f~om a nozzle 17 towards the surface of the water. Nozzle 17, shown in ,1 i greater detail in Figure 2, is of a vortex chamber type, and produces a downwardly diverging conical sheet of sulphur.
l'he turbulent swirling action produced by impact between the rotating conical sheet, or the droplets formed therefrom, and the water aids in the production of sulphur pellets which sink to the bottom of the tank. Air in~ected via line 20 lifts the pellets via chute 22 to a dewatering screen whence they are collected for future use. Water trained from screen 24 by line 26 ànd from the air in~ection point via line 28 may ~1 be returned to the water supply as is well known in the art.
If necessary, an inert gas or vapour such as steam may be provided above the water surface to prevent oxidation of the ;~30 gulphur or any other undesirable chemical reaction. A surfact-ant, such as one of the group of common detergents can be added to the water to improve the hardness or surface appearance of the pelletizet product.
~' ! mb/~ 2 -; ' ~4~37S
The use of a vortex chamber type of nozzle 17 has many advantages. A ]arge number of sulphur droplets are formed concurrently and the diverging nature of the sulphur cone keeps the droplet trajectories at some distance from one another which helps to avoid sticking or coalescing of the pellets. In pelletizing mixtures of sulphur with ben-tonite, metal oxides or insoluble fertilizer materials to provide special fertilizers, this type of nozzle ensures that nozzle fouling by the particulate material is avoided.
In the preferred form of the process the vortex nozzle i8 operated at or near the minimum pres~ure required to produce a hollow cone ~et The spray droplet size is controlled primarily by nozzle size and supply pressure or pressure drop. The nature of the sulphur particles produced by the process, specifically pellet size and friability, can be varied by altering the supply pressure and the distance between the vortex nozzle and the water surface. In the preferred form thls distance is such that the sulphur sep-arates into particles under the influence of surface tension and rotational velocity prior to impact on the water. The apparatus can be operated, however, with a smaller distance so that a continuous sheet impinges on the water and even with the nozzle submerged in water. In operation with the nozzle submerged the direction of the discharge i5 not critical and may be upwardly. The temperature of the cooling liquid is also a variable and has especially marked effects when the conical ~et impinges on the water prior to breakup.
More porous and lrregular sulphur pellets tend to be formed at colder water temperatures.
The results of a standard tumbling test on the product of a typical preferred operation are shown in Table 1.
The prills are hard and dense with a wide gradation in size, leading to good shipping density. However, if the nozzle is mb/ ~ 3 _ ,, 104~375 near or below the surface of the water, or if the nozzle supply pressure is relatively high, the pellets which form are more friable and less dense, being somewhat like popcorn in appearance. Thus the product of the preferred operation is ideal for its freeflowing handling properties and lack of dusting, whereas ' .
, ' . .
.
,~
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- .
.
. mb/~ ~ - 3a -~ ':'. ' -- ~04~37S
the alternative friable product is ideal when high porosity or grindability are desired by the consumer. The process is unique in its adaptability to a wide range of product require-ments.
Standard Tumbling Test For Friability ' ,, ,~, Sieve % after % after Size , 440 tumbles 920 tumbles ", .
3/8" 0.00 0.00 4 i.81 6.13 8 43.04 40.1a ; 16 35.55 38.82 10.95 12.28 1 8Ottom 2.66 2.67 ~,~ This sample hAs bottoms percentage comparable with many other forms of prilled sulphur. The hiqh bulk density conforms with low friability.
'? BULK DENSITIES: 1. 25 g/ml ~78.06 lb/cu.ft.) ;t ~ 20 6amples air dried for 24 hrs. at 23 & , relative humidity = 40~.
,1 OPerating Conditions (a). Temperature of molten sulphur: 275F
;, , b) Cooling water temperature: 90F ; ?
~c) Level of vortex nozzle aperture above cooling water surface: 10.5 in.
d) Vortex nozzle aperture diameter: 23/32 in.
(e) Vortex nozzle pressure drop:1.5 psig.
(f) Sulphur flow rate: 1800 lb/hr.
~: .
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--` 1040375 The change in the distribution of prill sizes with distance of the nozzle from the water is set out below in Table 2.
TAB~E 2 Run Nozzle to WaterO Sieve Size ~ Finer No. H2O Height Temp( F) Mesh No Opening Than Mesh ~in.) Size(mm) Size . 1 5.5 100 3/8 9.51100.0 :~ 4 2 7386678 32 ~ . . 130 lo: s9sl 33 0.297 0.6 ., . ..
A method of providing pellets of various salts, particularly those required for fertillze~s, is taught in Haak's U.S. patent 1,782,038 issued November 18, 1930.
This patent teaches a process in which cooling liquid contained in a vessel is maintained in intense rotation by a stirrer. Thé molten liquid to be formed into pellets is pouret onto a rotating tisc from which particles are thrown off into the cooling liquid.
Summary of the Invention The method of the present inventlon includes flowing a fu~ible substance such as molten sulphur through a vortex chamber 80 that it emerges in a downwartly tirected conical sheet or ~et. Thls sheet is permitted to impact on a body of coollng liquid either before or after it separates into partlcles under the lnfluence of its rotation and surface tension. By varying the dlstance between the vortex chamber and the liquid surface and by varylng the nozzle slze and pressure drop across the no7zle control of the size and surface texture of the pellets 18 obtalned.
Thls method avolds the necesslty of supplylng rotatlonal energy to the cooling liquit ant, due to the relative velocity between the conical sulphur sheet and the llquld, a great deal of turbulence is caused to promote pellet formation. The use of a vortex chamber permits par-ticulate matter to be added to the molten sulphur or other fusible substance without leading to blockage of the nozzle.
If the cooling liquid (e.g. oil, brine or pressur$zed water) in the tank is thermally stratified by cooling the lower portion and keeping the upper portion at a temperature mb/~t~ - 1 -above the fusion temperature of the sulphur, the liquid sulphur droplets will coalesce as they drift downwards to form larger pellets. As an alternative to stratification, the cooling liquid may simply f-low countercurrent to the sulphur droplets such that an acceptable temperature gradient is achieved.
Brief Description of the Drawings ., Figure 1 is a diagrammatic view of a sulphur pellet-izing plant adapted to carry out the method of Phis invention, and Figure 2 is a view of the sulphur distributing nozzle.
Descrlption of the Preferred Embodiment Referring to Figure 1, a pelletizer tank 10 contains water kept at a constant head via a line 11 and port 12.
Molten sulphur supplied by a line 16 is sprayed f~om a nozzle 17 towards the surface of the water. Nozzle 17, shown in ,1 i greater detail in Figure 2, is of a vortex chamber type, and produces a downwardly diverging conical sheet of sulphur.
l'he turbulent swirling action produced by impact between the rotating conical sheet, or the droplets formed therefrom, and the water aids in the production of sulphur pellets which sink to the bottom of the tank. Air in~ected via line 20 lifts the pellets via chute 22 to a dewatering screen whence they are collected for future use. Water trained from screen 24 by line 26 ànd from the air in~ection point via line 28 may ~1 be returned to the water supply as is well known in the art.
If necessary, an inert gas or vapour such as steam may be provided above the water surface to prevent oxidation of the ;~30 gulphur or any other undesirable chemical reaction. A surfact-ant, such as one of the group of common detergents can be added to the water to improve the hardness or surface appearance of the pelletizet product.
~' ! mb/~ 2 -; ' ~4~37S
The use of a vortex chamber type of nozzle 17 has many advantages. A ]arge number of sulphur droplets are formed concurrently and the diverging nature of the sulphur cone keeps the droplet trajectories at some distance from one another which helps to avoid sticking or coalescing of the pellets. In pelletizing mixtures of sulphur with ben-tonite, metal oxides or insoluble fertilizer materials to provide special fertilizers, this type of nozzle ensures that nozzle fouling by the particulate material is avoided.
In the preferred form of the process the vortex nozzle i8 operated at or near the minimum pres~ure required to produce a hollow cone ~et The spray droplet size is controlled primarily by nozzle size and supply pressure or pressure drop. The nature of the sulphur particles produced by the process, specifically pellet size and friability, can be varied by altering the supply pressure and the distance between the vortex nozzle and the water surface. In the preferred form thls distance is such that the sulphur sep-arates into particles under the influence of surface tension and rotational velocity prior to impact on the water. The apparatus can be operated, however, with a smaller distance so that a continuous sheet impinges on the water and even with the nozzle submerged in water. In operation with the nozzle submerged the direction of the discharge i5 not critical and may be upwardly. The temperature of the cooling liquid is also a variable and has especially marked effects when the conical ~et impinges on the water prior to breakup.
More porous and lrregular sulphur pellets tend to be formed at colder water temperatures.
The results of a standard tumbling test on the product of a typical preferred operation are shown in Table 1.
The prills are hard and dense with a wide gradation in size, leading to good shipping density. However, if the nozzle is mb/ ~ 3 _ ,, 104~375 near or below the surface of the water, or if the nozzle supply pressure is relatively high, the pellets which form are more friable and less dense, being somewhat like popcorn in appearance. Thus the product of the preferred operation is ideal for its freeflowing handling properties and lack of dusting, whereas ' .
, ' . .
.
,~
'~ .
~' ~ " ' ' ;
- .
.
. mb/~ ~ - 3a -~ ':'. ' -- ~04~37S
the alternative friable product is ideal when high porosity or grindability are desired by the consumer. The process is unique in its adaptability to a wide range of product require-ments.
Standard Tumbling Test For Friability ' ,, ,~, Sieve % after % after Size , 440 tumbles 920 tumbles ", .
3/8" 0.00 0.00 4 i.81 6.13 8 43.04 40.1a ; 16 35.55 38.82 10.95 12.28 1 8Ottom 2.66 2.67 ~,~ This sample hAs bottoms percentage comparable with many other forms of prilled sulphur. The hiqh bulk density conforms with low friability.
'? BULK DENSITIES: 1. 25 g/ml ~78.06 lb/cu.ft.) ;t ~ 20 6amples air dried for 24 hrs. at 23 & , relative humidity = 40~.
,1 OPerating Conditions (a). Temperature of molten sulphur: 275F
;, , b) Cooling water temperature: 90F ; ?
~c) Level of vortex nozzle aperture above cooling water surface: 10.5 in.
d) Vortex nozzle aperture diameter: 23/32 in.
(e) Vortex nozzle pressure drop:1.5 psig.
(f) Sulphur flow rate: 1800 lb/hr.
~: .
, _ 4 -'. , ~: , `~ ~vb/
--` 1040375 The change in the distribution of prill sizes with distance of the nozzle from the water is set out below in Table 2.
TAB~E 2 Run Nozzle to WaterO Sieve Size ~ Finer No. H2O Height Temp( F) Mesh No Opening Than Mesh ~in.) Size(mm) Size . 1 5.5 100 3/8 9.51100.0 :~ 4 2 7386678 32 ~ . . 130 lo: s9sl 33 0.297 0.6 ., . ..
2 8.5 100 3/8 9.51100.0 4 4.76 75.2 i' 30 0.595 1.2 ;` . 50 0.297 0.4 ' ' ...... .
~ 3 10.5 85 3/8 9.51100.0 s 4 4.76 82.0 , 8 2.38 23.2 16 1.19 6.3 . 30 0.595 1.4 ~: . 50 0.297 0.3 4 12.5 90 3/8. 9.51100.0 4 4.76 92.2 8 2.38 34.8 : 16 1.19 5.9 0.595 1.2 0.297 0.2 1:
15.5 90 3/8 9.51100.0 `~ 4 . 4.76 96.0 ! 8 2.38 45.2 . 16 1.19 12.4 . . 30 0.595 2.8 . 50 0.297 0.7 ,, ~ , . . ' ,`~. Operatin~ Conditions:
~a) Molten Sulphur Temp: 275F
. ~b) Molten Sulphur F.low Rate: 1800 lb/hr (c) Nozzle Aperture: 23/32 in.
~d) Nozzle Pressure Drop: 1.5 psi jvb/ sl 1~4~;1375 Clearly, several variations are possible in the dis-closed method without departing from the inventive concept.
Specifically, it can be applied to various fusible minerals, metals, glasses or salts in addition to the disclosed prepara-tion of sulphur prills. If the fusible substance has a density less than that of the cooling liquid then the vortex chamber . can be positioned near or at the bottom of the tank to spray upwardly with the resulting pellets being collected at the upper surface of the li~uid.
jvb/sl -; :
Supplementary Disclosure Applicant has now ascertained that the process operates with the nozzle-water distance in the range of 0-50 inche~ with the preferred range being 8-20 inches. The process operate~ with water temperatures in the range 40-210 F with the preferred range being 100-200 F. It has been found that very satisfactory results are obtainet when operating with water temperature at about 160 F.
The process operates with the molten sulphur tempera-; 10 ture ln a range from about the melting point (230-246 F) ~ to 330 F, typically a range of 260-330 F, with a preferred i .
operatlng temperature of 305 F for pellets of maxlmum hardness. The pressure drop scross the nozzle (whlch 18 d equlvalent to the supply pressure slnce there 18 substantlally ~ no pressure at the output) ~p 18 in the range 0 <~p ~40 pslg.
i~ Pellet slze decreases with pressure and operatlon above 40 pslg tends to produce an unacceptable amount of fines.
; The preferred operatlng pressure range is l.0 <~p <5.0 psig for a wlde range of nozzle slzes. Increaslng the distance between the nozzle and the water lncreases the number of ~'~ smaller slzed pellets.
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~ 3 10.5 85 3/8 9.51100.0 s 4 4.76 82.0 , 8 2.38 23.2 16 1.19 6.3 . 30 0.595 1.4 ~: . 50 0.297 0.3 4 12.5 90 3/8. 9.51100.0 4 4.76 92.2 8 2.38 34.8 : 16 1.19 5.9 0.595 1.2 0.297 0.2 1:
15.5 90 3/8 9.51100.0 `~ 4 . 4.76 96.0 ! 8 2.38 45.2 . 16 1.19 12.4 . . 30 0.595 2.8 . 50 0.297 0.7 ,, ~ , . . ' ,`~. Operatin~ Conditions:
~a) Molten Sulphur Temp: 275F
. ~b) Molten Sulphur F.low Rate: 1800 lb/hr (c) Nozzle Aperture: 23/32 in.
~d) Nozzle Pressure Drop: 1.5 psi jvb/ sl 1~4~;1375 Clearly, several variations are possible in the dis-closed method without departing from the inventive concept.
Specifically, it can be applied to various fusible minerals, metals, glasses or salts in addition to the disclosed prepara-tion of sulphur prills. If the fusible substance has a density less than that of the cooling liquid then the vortex chamber . can be positioned near or at the bottom of the tank to spray upwardly with the resulting pellets being collected at the upper surface of the li~uid.
jvb/sl -; :
Supplementary Disclosure Applicant has now ascertained that the process operates with the nozzle-water distance in the range of 0-50 inche~ with the preferred range being 8-20 inches. The process operate~ with water temperatures in the range 40-210 F with the preferred range being 100-200 F. It has been found that very satisfactory results are obtainet when operating with water temperature at about 160 F.
The process operates with the molten sulphur tempera-; 10 ture ln a range from about the melting point (230-246 F) ~ to 330 F, typically a range of 260-330 F, with a preferred i .
operatlng temperature of 305 F for pellets of maxlmum hardness. The pressure drop scross the nozzle (whlch 18 d equlvalent to the supply pressure slnce there 18 substantlally ~ no pressure at the output) ~p 18 in the range 0 <~p ~40 pslg.
i~ Pellet slze decreases with pressure and operatlon above 40 pslg tends to produce an unacceptable amount of fines.
; The preferred operatlng pressure range is l.0 <~p <5.0 psig for a wlde range of nozzle slzes. Increaslng the distance between the nozzle and the water lncreases the number of ~'~ smaller slzed pellets.
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Claims (21)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A pelletizing process for fusible substances selected from the group of minerals, metals, glasses and salts comprising the steps of feeding a substance in a molten state to a vortex chamber, causing it to leave the chamber in a diverging conical sheet and impacting the sheet into a body of cooling liquid, thereby to cause a turbulent swirling action to promote the formation of pellets from particles of the fusible substance.
2. The process of claim 1 wherein the cooling liquid is spaced from the vortex chamber.
3. The process of claim 2 wherein the conical sheet diverges downwardly from the vortex chamber.
4. The process of claim 1 wherein the substance is sulphur.
5. The process of claim 4 wherein the liquid is water, brine or oil.
6, The process of claim 3 wherein the spacing of the vortex chamber and the body of water is such that the conical sheet is continuous until contact with the water surface and separates into particles only after such contact.
7. The process of claim 3 wherein the spacing of the vortex chamber and the body of water is such that the conical sheet separates into particles prior to impact on the water surface.
8. The process of claim 1 wherein the vortex chamber is submerged below the surface of the water.
9. The process of claim 5, claim 6 or claim 7 further including the step of mixing an additive, selected from the group of bentonite, metal oxides, and insoluble fertilizer ingredients with the molten sulphur before it is fed to the vortex chamber.
10. The process of claim 4, claim 5 or claim 6 wherein the step of feeding the substance to the vortex chamber results in a pressure drop across the vortex chamber sufficient to form a hollow conical sheet at the orifice.
11. The process of claim 2, claim 3 or claim 6 comprising the further step of providing a non-reactive gas in the space above the liquid.
12. The process of claim 1, claim 2 or claim 3 comprising the further step of adding a surfactant to the cooling liquid.
13. A pelletizing process for fusible substances comprising feeding the substance in a molten state to a vortex chamber, placing the vortex chamber in a body of liquid tenser than the molten substance so that it leaves the vortex chamber in an upwardly diverging conical sheet thereby causing a turbulent swirling action which promotes the formation of pellets of the substance and collecting the pellets at the upper surface of the liquid.
CLAIMS SUPPORTED BY THE SUPPLEMENTARY DISCLOSURE
CLAIMS SUPPORTED BY THE SUPPLEMENTARY DISCLOSURE
14. A process for pelletizing sulphur comprising:
a) feeding molten sulphur at a temperature of 260°-330°F to a vortex chamber nozzle producing a hollow cone spray at a pressure of less than 40 psig producing a downwardly diverging hollow conical sheet of said molten sulphur; and b) impacting said conical sheet of molten sulphur upon the surface of a body of water having a tempera-ture in the range 40°-210°F spaced below said nozzle pro-ducing a turbulent swirling action in said water, said sheet of molten sulphur separating into droplets which are cooled by said water to solidification to form said pellets.
a) feeding molten sulphur at a temperature of 260°-330°F to a vortex chamber nozzle producing a hollow cone spray at a pressure of less than 40 psig producing a downwardly diverging hollow conical sheet of said molten sulphur; and b) impacting said conical sheet of molten sulphur upon the surface of a body of water having a tempera-ture in the range 40°-210°F spaced below said nozzle pro-ducing a turbulent swirling action in said water, said sheet of molten sulphur separating into droplets which are cooled by said water to solidification to form said pellets.
15. The process of claim 14 wherein the body of water is at a temperature in the range 100°-200°F.
16. The process of claim 14 wherein the body of water is at a temperature of about 160°F.
17. The process of claim 14 wherein said nozzle is spaced from said surface of said body of water a distance less than 50 inches.
18. The process of claim 17 wherein said nozzle is spaced from said surface of said body of water a distance in the range 8-20 inches.
19. The process of claim 18 wherein said nozzle is spaced from said surface of said body of water about 10 inches.
20. The process of claim 14 wherein there is a pressure drop across said nozzle of 1-5 psig.
21. The process of claim 14 wherein the temperature of said molten sulphur is 305° F.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA210,688A CA1040375A (en) | 1974-10-03 | 1974-10-03 | Sulphur pelletization process |
| JP12020975A JPS5163391A (en) | 1974-10-03 | 1975-10-03 | Io oyobi iokongobutsuperetsutono seiho |
| FR7530885A FR2286672A1 (en) | 1974-10-03 | 1975-10-03 | Sulphur granules solidified from molten sulphur droplets - delivered from vortex-chambered nozzle into water |
| US05/780,447 US4081500A (en) | 1974-10-03 | 1977-03-23 | Sulphur pelletization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA210,688A CA1040375A (en) | 1974-10-03 | 1974-10-03 | Sulphur pelletization process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1040375A true CA1040375A (en) | 1978-10-17 |
Family
ID=4101285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA210,688A Expired CA1040375A (en) | 1974-10-03 | 1974-10-03 | Sulphur pelletization process |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5163391A (en) |
| CA (1) | CA1040375A (en) |
| FR (1) | FR2286672A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109175A1 (en) * | 2017-12-04 | 2019-06-13 | Sultech Global Innovation Corp. | Process for the production of micronized sulfur |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5239594A (en) * | 1975-09-26 | 1977-03-26 | Nippon Steel Corp | Production of granular sulfur |
| NO177987C (en) * | 1993-05-14 | 1996-01-03 | Norsk Hydro As | Method and apparatus for making metal granules |
| AR046755A1 (en) * | 2003-12-10 | 2005-12-21 | Shell Int Research | SULFUR PELLET INCLUDING A H2S SUPPRESSOR |
| RU2545281C2 (en) * | 2013-06-19 | 2015-03-27 | Общество с ограниченной ответственностью "Альцел" (ООО "Альцел") | Method of producing granular sulphur |
-
1974
- 1974-10-03 CA CA210,688A patent/CA1040375A/en not_active Expired
-
1975
- 1975-10-03 JP JP12020975A patent/JPS5163391A/en active Pending
- 1975-10-03 FR FR7530885A patent/FR2286672A1/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109175A1 (en) * | 2017-12-04 | 2019-06-13 | Sultech Global Innovation Corp. | Process for the production of micronized sulfur |
| US11459277B2 (en) | 2017-12-04 | 2022-10-04 | Sultech Global Innovation Corp. | Process for the production of micronized sulfur |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2286672A1 (en) | 1976-04-30 |
| FR2286672B3 (en) | 1979-06-29 |
| JPS5163391A (en) | 1976-06-01 |
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