PROCESS FOR OPERATING A UTILITY BOILER AND METHODS THEREFOR
First Claim
1. A process for operating a utility boiler, comprising:
- a) providing fuel to the boiler;
b) providing one or more additives selected from the group consisting of (i) one or more slag control agents, (ii) one or more oxygen-generating agents, (iii) one or more acid reduction agents, (iv) one or more fouling prevention agents, (v) one or more oxidizer agents, (vi) one or more heavy metal capturing agents and (vii) any combination of the foregoing to the boiler or an auxiliary device thereof;
c) providing air to the boiler;
d) burning the fuel in the boiler to generate heat and an exhaust gas and/or a flue gas; and
e) intermittently or continuously monitoring one or more physical and/or chemical parameters of the fuel and/or intermittently or continuously monitoring one or more emissions variables of the exhaust gas and/or a flue gas to obtain one or more values; and
f) varying or maintaining the rate at which the one or more additives is provided to the boiler or an auxiliary device based on the one or more values obtained.
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Accused Products
Abstract
A process for operating a utility boiler. The process has the following steps: (a) providing fuel to the boiler; (b) providing one or more additives selected from the group consisting of (i) one or more slag control agents, (ii) one or more oxygen-generating agents, (iii) one or more acid mitigation agents, (iv) one or more fouling prevention agents, (v) one or more oxidizer agents, (vi) one or more heavy metal capturing agents, and (vii) any combination of the foregoing to the boiler or an auxiliary device thereof; (c) providing air to the boiler; (d) burning the fuel in the boiler to generate heat and an exhaust gas; (e) intermittently or continuously monitoring one or more physical and/or chemical parameters of the fuel and/or intermittently or continuously monitoring one or more emissions variables of the exhaust gas to obtain one or more values therefor; and (f) varying or maintaining the rate at which either or both of the fuel and the one or more additives are provided to the boiler based on the one or more values obtained.
19 Citations
19 Claims
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1. A process for operating a utility boiler, comprising:
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a) providing fuel to the boiler; b) providing one or more additives selected from the group consisting of (i) one or more slag control agents, (ii) one or more oxygen-generating agents, (iii) one or more acid reduction agents, (iv) one or more fouling prevention agents, (v) one or more oxidizer agents, (vi) one or more heavy metal capturing agents and (vii) any combination of the foregoing to the boiler or an auxiliary device thereof; c) providing air to the boiler; d) burning the fuel in the boiler to generate heat and an exhaust gas and/or a flue gas; and e) intermittently or continuously monitoring one or more physical and/or chemical parameters of the fuel and/or intermittently or continuously monitoring one or more emissions variables of the exhaust gas and/or a flue gas to obtain one or more values; and f) varying or maintaining the rate at which the one or more additives is provided to the boiler or an auxiliary device based on the one or more values obtained. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19)
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3. The process of claim 3, wherein the one or more emissions variables in the exhaust gas are selected from the group consisting of opacity, particulates, NOx, SO2, SO3, acid level, and Hg.
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16. The process of claim 16, wherein in step (e) the one or more physical and/or chemical parameters of the fuel is intermittently monitored at a period of time elapse of five minutes or less between the end of a test and repeat of the test.
Specification