Testing H2S scavengers polymerization factors
AssigneeConocoPhillips Company
InventorsJay E. Locklear, Clinton L. Crowe
Life of this patent
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Abstract
Scavenging chemicals used in mitigation treatments of hydrogen sulfide in hydrocarbon streams often continue to react and form polymers that foul the processing system. Disclosed herein are methods for determining if a scavenging chemical mitigator, or its reaction or degradation product, will polymerized during or after mitigation treatments. This information allows for the optimization of mitigation treatments that pre-emptively control or prevent polymer formation. Such pre-emption measures reduce the cost and time related to remedial actions to treat polymer-fouled equipment.
Claims17
A method of sulfide scavenger treatment, said method comprising:
- a) preparing an array of samples, wherein each sample comprises a sulfide scavenger and a sulfide in a buffer and optionally one or more test component(s) selected from a solvent, a buffer, an acid, a base, a salt, an alcohol, an amine, a water soluble polymer, a dispersant, and a polymerization inhibiting additive;
- b) varying a parameter in one or more samples in said array of samples, said parameter selected from pH, concentration and identity of sulfide scavenger, concentration and identity of sulfide, heating temperature, heating time, heating rate, cooling temperature, cooling time, concentration of said test component(s) and identity of said test component(s);
- c) processing said array of samples to induce polymer formation;
- d) analyzing said processed array of samples to measure polymer formation;
- e) selecting one or more parameter(s) and optionally said one or more test component(s) that minimize polymer formation;
- and
- f) utilizing said selected one or more parameter(s) and optionally said one or more test component(s) in a sulfide scavenger treatment to prevent polymerization of said sulfide scavenger.
A method of preventing polymer formation in sulfide scavenger treatments, said method comprising:
- a) preparing an array of samples, wherein each sample comprises a triazine sulfide scavenger and a sulfide in a buffer and optionally one or more test component(s) selected from a solvent, a buffer, an acid, a base, a salt, an alcohol, an amine, a water soluble polymer, a dispersant, a polymerization inhibiting additive and a polymerization mitigation chemical;
- b) varying a parameter in one or more samples in said array of samples, said parameter selected from pH, concentration and identity of sulfide scavenger, concentration and identity of sulfide, heating temperature, heating time, heating rate, cooling temperature, cooling time and concentration and identity of said additional component(s);
- c) processing said array of samples to induce polymer formation;
- d) analyzing said processed array of samples to measure polymer formation;
- e) selecting one or more parameter(s) and optionally said one or more test component(s) that minimizes polymer formation;
- and
- f) utilizing said selected one or more parameter(s) and optionally said one or more test component(s) in a sulfide scavenger treatment to prevent polymerization of said sulfide scavenger.
Dependencies are inferred from the claim text.