Patent
Process using aloe for inhibiting scale
| العنوان: | Process using aloe for inhibiting scale |
|---|---|
| Patent Number: | 8,039,421 |
| تاريخ النشر: | October 18, 2011 |
| Appl. No: | 12/627067 |
| Application Filed: | November 30, 2009 |
| مستخلص: | A method is provided for inhibiting scale in a hydrocarbon system, including the steps of: providing a hydrocarbon system; providing an aloe-derived scale inhibitor; and mixing the aloe-derived scale inhibitor with the hydrocarbon system in amounts effective to inhibit formation of scale. The scale inhibitor is an aloe vera gel/aloe sap mix dissolved in water at a concentration of between about 5 and about 50% wt/wt, which includes polysaccharides having a hydrocarbon chain structure having carboxyl and alcohol functional groups that interact with divalent ions. |
| Inventors: | Viloria, Alfredo (Caracas, VE); Castillo, Luis (Calabozo, VE); Garcia, Jose A. (Caracas, VE); Carrasquero Ordaz, Maria Alejandra (Valencia, VE); Torin, Elluz Vanessa (Duaca, VE) |
| Assignees: | Intevep, S.A. (Caracas, VE) |
| Claim: | 1. A method for inhibiting scale in a hydrocarbon system, comprising the steps of: providing a hydrocarbon system; providing an aloe-derived scale inhibitor, wherein the aloe-derived scale inhibitor is prepared by: obtaining Aloe Vera plants; grinding the Aloe Vera plant to produce an aloe vera gel/aloe sap mix from the Aloe Vera plants; sterilizing and stabilizing the aloe vera gel/aloe sap mix to provide a stabilized mix; and, dissolving the stabilized mix in water to provide the scale inhibitor as an aqueous solution having a concentration of stabilized mix of between about 5 and about 50% wt/wt; and, mixing the aloe-derived scale inhibitor with the hydrocarbon system in amounts effective to inhibit formation of scale. |
| Claim: | 2. The method of claim 1 , wherein the hydrocarbon system is selected from the group consisting of liquid, gas or mixtures thereof. |
| Claim: | 3. The method of claim 1 , wherein the aloe-derived scale inhibitor comprises hydrocarbon chain structures having carboxyl and alcohol functional groups. |
| Claim: | 4. The method of claim 3 , wherein the hydrocarbon chain structures having carboxyl and alcohol functional groups interact with divalent ions. |
| Claim: | 5. The method of claim 3 , wherein the hydrocarbon chain structures comprise polysaccharides. |
| Claim: | 6. The method of claim 1 , wherein the aloe-derived scale inhibitor is thermally stable up to a temperature of at least about 125° C. |
| Claim: | 7. The method of claim 1 , wherein the aloe-derived scale inhibitor has an average molecular weight of between about 15 and about 50 KDa. |
| Claim: | 8. The method of claim 1 , wherein the hydrocarbon system comprises an organic phase and an aqueous phase, and wherein the aloe-derived scale inhibitor is soluble in the aqueous phase. |
| Claim: | 9. The method of claim 1 , further comprising the step of separating an alcohol insoluble fraction from the stabilized mix, and dissolving the alcohol insoluble fraction in water to provide the aloe-derived scale inhibitor. |
| Claim: | 10. The method of claim 1 , wherein the dissolving step is carried out to produce the aloe-derived scale inhibitor having a concentration of between about 10 and about 25% wt/wt. |
| Claim: | 11. The method of claim 1 , wherein the dissolving step is carried out to produce the aloe-derived scale inhibitor having a concentration of about 15% wt/wt. |
| Claim: | 12. The method of claim 1 , wherein the mixing step comprises introducing the aloe-derived scale inhibitor to a hydrocarbon system selected from the group consisting of hydrocarbon producing wells, collection and compression systems, injector wells, water and oil separation plants, sweetening plants, dehydration plants, industrial consumption sites, domestic consumption sites, LNG (Liquefied Natural Gas) plants and transportation facilities. |
| Current U.S. Class: | 507/90 |
| Patent References Cited: | 2970959 February 1961 Jones 3360511 December 1967 Farkas 3411580 November 1968 McKinney et al. 4561982 December 1985 Kuriyama et al. 5253711 October 1993 Mondshine 7196040 March 2007 Heath et al. 2003/0211182 November 2003 Maughan et al. 0559418 September 1993 01/94744 December 2001 |
| Assistant Examiner: | Admasu, Atnaf |
| Primary Examiner: | Kugel, Timothy J. |
| Attorney, Agent or Firm: | Bachman & LaPointe, P.C. |
| رقم الانضمام: | edspgr.08039421 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |