Modified acid compositions as alternatives to conventional acids in the oil and gas industry

Patent metadata

Field	Value
Publication number	US-11912929-B2
Application number	US-202117190624-A
Country	US
Kind code	B2
Filing date	Mar 3, 2021
Priority date	Jun 2, 2017
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.

First claim

The invention claimed is:

1. A method of use of a modified acid composition comprising:
providing a composition including a mineral acid and an alkanolamine in a molar ratio ranging from 3:1 to not more than 15:1 and having a pH of less than 1;
introducing the composition to water to be treated in the water treatment industry;
allowing the composition to act upon the water to be treated; and
adjusting pH of the water being treated; and
neutralizing alkaline effluent of the water being treated.

2. The method according to claim 1 , wherein the mineral acid is selected from the group consisting of: HCl, nitric acid, sulfuric acid, sulfonic acid, phosphoric acid, and combinations thereof.

3. The method according to claim 1 , wherein the mineral acid is hydrochloric acid.

4. The method according to claim 3 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 10:1.

5. The method according to claim 3 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 7.0:1.

6. The method according to claim 3 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 4.1:1.

7. The method according to claim 1 , wherein the alkanolamine is selected from the group consisting of: monoethanolamine; diethanolamine; triethanolamine and combinations thereof.

8. The method according to claim 1 , wherein the alkanolamine is monoethanolamine.

9. The method according to claim 1 , wherein the alkanolamine is diethanolamine.

10. A method of use of a modified acid composition comprising: providing the modified acid composition having a mineral acid and an alkanolamine in a molar ratio ranging from 3:1 to not more than 15:1 and having a pH of less than 1; introducing the modified acid composition to soil in the fertilizer/landscaping industry to thereby adjust the pH level of the soil.

11. The method according to claim 10 , wherein the mineral acid is selected from the group consisting of: HCl, nitric acid, sulfuric acid, sulfonic acid, phosphoric acid, and combinations thereof.

12. The method according to claim 10 , wherein the mineral acid is hydrochloric acid.

13. The method according to claim 12 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 10:1.

14. The method according to claim 12 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 7.0:1.

15. The method according to claim 12 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 4.1:1.

16. The method according to claim 10 , wherein the alkanolamine is selected from the group consisting of: monoethanolamine; diethanolamine; triethanolamine and combinations thereof.

17. The method according to claim 10 , wherein the alkanolamine is monoethanolamine.

18. The method according to claim 10 , wherein the alkanolamine is diethanolamine.

19. A method of use of a modified acid composition comprising:
providing a composition including a mineral acid and an alkanolamine in a molar ratio ranging from 3:1 to not more than 15:1 and having a pH of less than introducing the composition to ion exchange beds to be treated;
allowing the composition to act upon the ion exchange beds to be treated; and
regenerating the ion exchange beds.

20. The method according to claim 19 , wherein the mineral acid is selected from the group consisting of: HCl, nitric acid, sulfuric acid, sulfonic acid, phosphoric acid, and combinations thereof.

21. The method according to claim 19 , wherein the mineral acid is hydrochloric acid.

22. The method according to claim 21 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 10:1.

23. The method according to claim 21 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 7.0:1.

24. The method according to claim 21 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 4.1:1.

25. The method according to claim 19 , wherein the alkanolamine is selected from the group consisting of: monoethanolamine; diethanolamine; triethanolamine and combinations thereof.

26. The method according to claim 19 , wherein the alkanolamine is monoethanolamine.

27. The method according to claim 19 , wherein the alkanolamine is diethanolamine.

Assignees

• Fluid Energy Group Ltd
• Dorf Ketal Chemicals Fze

Inventors

• Purdy Clay
• Weissenberger Markus

Classifications

• C09K8/52 Primary

  Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning · CPC title

• A23C21/00 Primary

  Whey; Whey preparations (concentration, evaporation or drying A23C1/00; milk preparations, milk powder or milk powder preparations in which the chemical composition of the milk is modified by non-chemical treatment A23C9/14; preservation of whey or whey preparations A23B11/80) · CPC title

• A23J1/00

  Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites · CPC title

• A23J1/202

  Casein or caseinates · CPC title

• B01D15/203

  Equilibration or regeneration · CPC title