Method of scavenging hydrogen sulfide and/or mercaptans using triazines

1. A method for scavenging hydrogen sulfide and/or mercaptans from a liquid or gaseous stream which comprises bringing the stream into contact with a scavenging effective amount of at least one triazine of the formula:

wherein R 1 , R 2 and R 3 are each independently selected from the group consisting of R 4 and R 5 , R 4 is a C 1 -C 20 straight or branched chain alkyl group, R 5 is —[(CH) m —NH] p —(CH 2 ) n OH, n and m are independently an integer from 2 to about 6, p is from 1 to about 6; and

further wherein at least one of R 1 , R 2 and R 3 is R 4 and at least one of R 1 , R 2 and R 3 is R 5 .

2. The method of claim 1 , wherein R 5 is —CH 2 CH 2 NHCH 2 CH 2 OH.

3. The method of claim 1 , wherein R 4 is a C 1 -C 6 straight or branched chain alkyl group.

4. The method of claim 3 , wherein R 4 is t-butyl.

5. The method of claim 1 , wherein two of R 1 , R 2 and R 3 are R 5 and one of R 1 , R 2 and R 3 is R 4 .

6. The method of claim 1 , wherein the triazine is a mixture of:

(i) a first triazine of formula (I) wherein R 1 and R 2 are R 4 and R 3 is R 5 ;

(ii) a second triazine of formula (I) wherein R 1 is R 4 and R 2 and R 3 are R 5 ;

(iii) a third triazine of formula (I) wherein R 1 , R 2 and R 3 are R 4 ; and

(iv) a fourth triazine of formula (I) wherein R 1 , R 2 and R 3 are R 5

and further wherein the substituent for R 4 for each of the triazines of (i), (ii), (iii) and (iv) is the same and the substituent for R 5 for each of the triazines of (i), (ii), (iii) and (iv) is the same.

7. The method of claim 6 , wherein each R 4 of the triazines of (i), (ii), (iii) and (iv) is a C 1 -C 6 alkyl group.

8. The method of claim 7 , wherein the C 1 -C 6 alkyl group is t-butyl.

9. The method of claim 6 , wherein each R 5 of the triazines of (i), (ii), (iii) and (iv) is —CH 2 CH 2 NHCH 2 CH 2 OH.

10. The method of claim 9 , wherein each R 4 of the triazines of (i), (ii), (iii) is t-butyl.

11. The method of claim 1 , wherein p is 2.

12. A method for reducing an amount of sulfhydryl compounds in a hydrocarbon substrate, comprising mixing the hydrocarbon substrate with a scavenging effective amount of a triazine of the formula:

wherein R 1 , R 2 and R 3 are each independently selected from the group consisting of R 4 and R 5 , R 4 is a C 1 -C 20 straight or branched chain alkyl group, R 5 is —[(CH) m —NH] p —(CH 2 ) n OH, n and m are independently an integer from 2 to about 6, p is from 1 to about 6; and

further wherein at least one of R 1 , R 2 and R 3 is R 4 and at least one of R 1 , R 2 and R 3 is R 5 .

13. The method of claim 12 , wherein R 5 is —CH 2 CH 2 NHCH 2 CH 2 OH.

14. The method of claim 12 , wherein R 4 is a C 1 -C 6 straight or branched chain alkyl group.

15. The method of claim 14 , wherein R 4 is t-butyl.

16. The method of claim 12 , wherein R 4 is t-butyl.

17. The method of claim 12 , wherein the hydrocarbon substrate is a wet or dry gaseous mixture of hydrogen sulfide and/or mercaptan and hydrocarbon vapors.

18. The method of claim 17 , wherein the hydrocarbon substrate is a sour aqueous or sour hydrocarbon substrate.

19. The method of claim 18 , wherein the triazine is a mixture of:

(i) a first triazine of formula (I) wherein R 1 and R 2 are R 4 and R 3 is R 5 ;

(ii) a second triazine of formula (I) wherein R 1 is R 4 and R 2 and R 3 are R 5 ;

(iii) a third triazine of formula (I) wherein R 1 , R 2 and R 3 are R 4 ; and

(iv) a fourth triazine of formula (I) wherein R 1 , R 2 and R 3 are R 5

and further wherein the substituent for R 4 for each of the triazines of (i), (ii), (iii) and (iv) is the same and the substituent for R 5 for each of the triazines of (i), (ii), (iii) and (iv) is the same.

20. The method of claim 19 , wherein each R 5 in the first triazine, second triazine, and fourth triazine is —CH 2 CH 2 NHCH 2 CH 2 OH and each R 4 in the first triazine, second triazine, and third triazine is t-butyl.