Claims
- 1. A process for the manufacture of ferric sulphate compounds from ferrous sulphate in a closed vessel containing a liquid phase and a vapour phase, the process comprising the oxidation of Fe.sup.++ to Fe.sup.+++ under pressure utilizing commercial oxygen in the closed vessel using NOx as a catalyst where x is a number between 1 and 2 inclusive of 1 and 2 and wherein the process comprises the following reactions: ##EQU22## wherein n is any integer greater than or equal to two (2) and y is any integer which is equal to, or greater than zero (0) and less than 3n and wherein the oxidation of Fe.sup.++ is affected by spraying the liquid phase including a solution containing Fe.sup.++ introduced to the closed vessel, through a reacting cloud comprising NO, NO.sub.2 and O.sub.2 enclosed in the vapour space of the closed vessel and wherein substantially only Ferric ions is present in the liquid phase in the closed vessel relative to the amounts of Ferric and Ferrous ions prior to the addition of FeSO.sub.4.
- 2. The process of claim 1 wherein the liquid phase fills about 1/3 of the vessel.
- 3. The process of claim 2 wherein the process is carried out continuously the one vessel.
- 4. The process of claim 2 wherein the amount of the Ferric in the ##EQU23## present in the liquid phase relative to the amount of Ferric and Ferrous ion prior to the addition of FeSO.sub.4 exceeds about 95%.
- 5. The process of claim 4 wherein the process is carried out continuously the one vessel.
- 6. The process of claim 1 wherein the amount of the Ferric in the ##EQU24## present in the liquid phase relative to the amount of Ferric and Ferrous ion prior to the addition of FeSO.sub.4 exceeds about 95%.
- 7. The process of claim 6 wherein the process is carried out continuously the one vessel.
- 8. The process of claim 1 wherein the process is carried out continuously the one vessel.
- 9. A process for the manufacture of ferric sulphate compounds from ferrous sulphate in a closed vessel containing a liquid phase and a vapour phase, the process comprising the oxidation of Fe.sup.++ to Fe.sup.+++ under pressure utilizing commercial oxygen in the closed vessel using NOx as a catalyst where x is a number between 1 and 2 inclusive of 1 and 2 and wherein the process comprises the following reactions: ##EQU25## wherein n is any integer greater than or equal to two (2) and y is any integer which is equal to, or greater than zero (0) and less than 3n and wherein the oxidation of Fe.sup.++ is affected by spraying a the liquid phase including a solution containing Fe.sup.++ introduced to the closed vessel, through a reacting cloud comprising NO, NO.sub.2 and O.sub.2 enclosed in the vapour space of the closed vessel and substantially only Ferric ion relative to the amounts of Ferric and Ferrous ions is present in the liquid phase in the closed vessel during the addition of FeSO.sub.4.
- 10. The process of claim 9 wherein the liquid phase fills about 1/3 of the vessel.
- 11. The process of claim 9 wherein the amount of the Ferric in the ##EQU26## present in the liquid phase relative to the amount of Ferric and Ferrous ion during the addition of FeSO.sub.4 exceeds about 95%.
- 12. The process of claim 10 wherein the amount of the Ferric in the ##EQU27## present in the liquid phase relative to the amount of Ferric and Ferrous ion during the addition of FeSO.sub.4 exceeds about 95%.
- 13. The process of claim 10 wherein the process is carried out continuously the one vessel.
- 14. The process of claim 12 wherein the process is carried out continuously the one vessel.
- 15. The process of claim 11 wherein the process is carried out continuously the one vessel.
- 16. The process of claim 9 wherein the process is carried out continuously in the vessel.
- 17. The process of claim 16 wherein y is O and n is 1 thereby producing ferric sulphate.
- 18. The process of claim 16 wherein a compound selected from Fe.sub.5 (SO.sub.4).sub.7 (OH), Fe.sub.6 (SO.sub.4).sub.8 (OH).sub.2, or Fe.sub.7 (SO.sub.4).sub.10 (OH) is produced.
- 19. The process of claim 1, or 9 wherein y is O and n is 1 thereby producing ferric sulphate.
- 20. The process of claim 1, or 9 wherein a compound selected from Fe.sub.5 (SO.sub.4).sub.7 (OH), Fe.sub.6 (SO.sub.4).sub.8 (OH).sub.2, or Fe.sub.7 (SO.sub.4).sub.10 (OH) is produced.
- 21. A process for the manufacture of ferric sulphate compounds from ferrous sulphate in a closed vessel containing a liquid phase and a vapour phase, the process comprising the oxidation between about 70.degree. C. to about 150.degree. C. of Fe.sup.++ to Fe.sup.+++ under pressure utilizing commercial oxygen in the closed vessel using NOx as a catalyst where x is a number between 1 and 2 inclusive of 1 and 2 and wherein the process comprises the following reactions: ##EQU28## wherein n is any integer greater than or equal to two (2) and y is any integer which is equal to, or greater than zero (0) and less than 3n and wherein the oxidation of Fe.sup.++ is affected by spraying a solution containing Fe.sup.++ through a reacting cloud comprising NO, NO.sub.2 and O.sub.2 enclosed in the vapour space of the closed vessel and wherein the liquid phase fills at least 1/3 of the vessel and substantially only ##EQU29## is present in the liquid phase in the closed vessel prior to the addition of FeSO.sub.4 and wherein the liquid phase is sprayed through the vapour phase.
- 22. The process of claim 21 wherein the process is carried out continuously in one vessel.
- 23. The process of claim 22 wherein FeSO.sub.4 and water are added in a sluice tank and mixed and the resultant solution is added to the vessel.
- 24. The process of claim 23 wherein the ##EQU30## solution is supplied to a denitrator where oxygen is supplied to denitrate said solution and the resultant gas is then passed to said vessel from the denitrator.
- 25. The process of claim 21 wherein successive batches are produced in the same vessel, and part of the volume of the earlier batch is removed leaving a portion comprising substantially only ##EQU31##
- 26. A process for the manufacture of ferric sulphate compounds from ferrous sulphate in a closed vessel containing a liquid phase and a vapour phase, the process comprising the oxidation between about 70.degree. C. to about 150.degree. C. of Fe.sup.++ to Fe.sup.+++ under pressure utilizing commercial oxygen in the closed vessel using NOx as a catalyst where x is a number between 1 and 2 inclusive of 1 and 2 and wherein the process comprises the following reactions: ##EQU32## wherein n is any integer greater than or equal to two (2) and y is any integer which is equal to, or greater than zero (0) and less than 3n and wherein the oxidation of Fe.sup.++ is affected by spraying a solution containing Fe.sup.++ through a reacting cloud comprising NO, NO.sub.2 and O.sub.2 enclosed in the vapour space of the closed vessel and wherein the liquid phase fills at least 1/3 of the vessel and substantially only ##EQU33## is present in the liquid phase in the closed vessel during the addition of FeSO.sub.4 and wherein the liquid phase is sprayed through the vapour phase.
- 27. The process of claim 26 wherein the process is carried out continuously in one vessel.
- 28. The process of claim 27 wherein FeSO.sub.4 and water are added in a sluice tank and mixed and the resultant solution is added to the vessel.
- 29. The process of claim 28 wherein the ##EQU34## solution is supplied to a denitrator where oxygen is supplied to denitrate said solution and the resultant gas is then passed to said vessel from the denitrator.
- 30. The process of claim 26 wherein successive batches are produced in the same vessel, and part of the volume of the earlier batch is removed leaving a portion comprising substantially only ##EQU35##
- 31. The process of claim 21 or 26 wherein y is O and n is 1 thereby producing ferric sulphate.
- 32. The process of claim 21 or 26 wherein a compound selected from Fe.sub.5 (SO.sub.4).sub.7 (OH), Fe.sub.6 (SO.sub.4).sub.8 (OH).sub.2, or Fe.sub.7 (SO.sub.4).sub.10 (OH) is produced.
- 33. The process of claim 22, 27 or 8 wherein y is O and n is 1 thereby producing ferric sulphate.
- 34. The process of claim 22, 27 or 8 wherein a compound selected from Fe.sub.5 (SO.sub.4).sub.7 (OH), Fe.sub.6 (SO.sub.4).sub.8 (OH).sub.2, or Fe.sub.7 (SO.sub.4).sub.10 (OH) is produced.
- 35. The process of claim 1, 9, 21 or 26 wherein Fe.sub.5 (SO.sub.4).sub.7 (OH) is produced.
- 36. The process of claim 1, 9, 21 or 26 wherein Fe.sub.6 (SO.sub.4).sub.8 (OH).sub.2 is produced.
- 37. The process of claim 1, 2, 21 or 26 wherein Fe.sub.7 (SO.sub.4).sub.10 (OH) is produced.
Parent Case Info
This application is a continuation-in-part application of application Ser. No. 07/765,498 filed Sep. 26, 1991, now U.S. Pat. No. 5,194,240 which application is a continuation of application Ser. No. 07/623,264 filed Dec. 6, 1990 (now abandoned) which is a continuation of application Ser. No. 07/494,808 filed Mar. 14, 1990 (now abandoned) which is a continuation of application Ser. No. 07/281,332 filed Dec. 8, 1988 (now abandoned) and a continuation-in-part application of application Ser. No. 07/718,780 filed Jun. 21, 1991, now U.S. Pat. No. 5,194,241 which was a continuation-in-part application of application Ser. No. 07/623,264, filed Dec. 6, 1990, now abandoned (discussed above) all of which are incorporated herein by reference.
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Foreign Referenced Citations (6)
Number |
Date |
Country |
0379204 |
Oct 1990 |
EPX |
49-53195 |
May 1974 |
JPX |
49-31638 |
Aug 1974 |
JPX |
50-106897 |
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Continuations (3)
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Date |
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Parent |
623264 |
Dec 1990 |
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Parent |
494808 |
Mar 1990 |
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Parent |
281332 |
Dec 1988 |
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Continuation in Parts (2)
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Number |
Date |
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Parent |
765498 |
Sep 1991 |
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Parent |
623264 |
Dec 1990 |
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