A method and apparatus to determine a first heating value of a low BTU fuel, determine a target fuel quality level based on a state of a turbine system, control a second heating value of a high BTU fuel, and inject the high BTU fuel into the low BTU fuel to achieve the target fuel quality level.

Claims

27 · 3 independent · depth 3

27 granted claims

›1.independentA method, comprising:ndetermining a first heating value of a low British thermal unit (BTU) fuel;determining a first target BTU level based on a start…+7

›2.↳ 1The method of claim 1, wherein the low BTU fuel is a low BTU gas fuel and the high BTU fuel is a high BTU liquid fuel.d2

›3.↳ 1The method of claim 1, comprising mixing the high BTU fuel and the low BTU fuel in a mixing chamber upstream from a combustor of the turbine system du…d2+1

›5.↳ 1The method of claim 1, comprising monitoring operating parameters of the turbine system, accessing historical data relating to operation of the turbin…d2

›6.↳ 1The method of claim 1, comprising receiving the low BTU fuel from a supply of at least one of a blast furnace gas, a coke oven gas, or a syngas, furth…d2

›7.↳ 1The method of claim 1, wherein the low BTU fuel comprises a low BTU gas fuel including at least one of a blast furnace gas, a coke oven gas, or a syng…d2+1

›9.independentA turbine system, comprising:na mixing chamber, comprising:na low British thermal unit (BTU) fuel inlet configured to receive a low BTU fuel;a high BT…+8

›10.↳ 9The system of claim 9, comprising a controller having the instructions, wherein the instructions further comprise instructions to adjust the ratio bet…d2+2

›13.↳ 9The system of claim 9, wherein the low BTU fuel is a low BTU gas fuel and the high BTU fuel is a high BTU liquid fuel, and the mixing chamber is confi…d2+1

›15.↳ 9The system of claim 9, comprising a low BTU gas fuel supply of at least one of a blast furnace gas, a coke oven gas, or a syngas configured to couple …d2

›16.↳ 9The system of claim 9, comprising at least one supply of a blast furnace gas, a coke oven gas, or a syngas configured to couple to the mixing chamber.d2+1

›18.independentA turbine system, comprising:na controller comprising a non-transitory tangible memory device having instructions to control mixing of a low British t…+9

›19.↳ 18The system of claim 18, wherein the controller has instructions to monitor operating parameters of the turbine system to identify the start-up conditi…d2+1

›21.↳ 18The system of claim 18, wherein the controller has instructions to control a first flow rate of the low BTU fuel and a second flow rate of the high BT…d2

›22.↳ 18The system of claim 18, wherein the controller has instructions to control a first temperature of the low BTU fuel and a second temperature of the hig…d2

›23.↳ 18The system of claim 18, wherein the low BTU fuel is a low BTU gas fuel and the high BTU fuel is a high BTU liquid fuel, and the high BTU liquid fuel i…d2

›24.↳ 18The system of claim 18, wherein the low BTU fuel is a low BTU gas fuel and the high BTU fuel is a high BTU liquid fuel, and the high BTU liquid fuel i…d2

›25.↳ 18The system of claim 18, comprising a gas turbine engine having the controller.d2

›26.↳ 18The system of claim 18, comprising a turbine fuel supply system having the controller, wherein the turbine fuel supply system comprises at least one s…d2

›27.↳ 18The system of claim 18, wherein the controller has instructions to control mixing of a high BTU liquid fuel with a low BTU gas fuel including at least…d2

Classifications

8 codes

IPC · International Patent Classification

Section F — Mechanical engineering; lighting; heating; weapons

F02C7/22

USPC · US Patent Classification

60/77860/39.46560/39.1260/39.28160/39.46360/77260/776

Claim changes

Soon

Coming soonHow the claims changed between publication and grant

See which claims were amended, added or cancelled during examination, with every added and removed word marked.

AmendedAddedCancelledUnchanged

The published claims of this patent are not paired with the granted ones in what we hold.

File wrapper

⤢ drag to zoom

USPTOApplicanthover for detail · click to open

Pendency

3.9 y

1,420 days filing → grant

Office actions

non-final + final

Responses

1 RCE

Interviews

examiner interview summaries

Examiner

Lorne Meade

art unit —

Law firm

Law firm · Log in to unlock

Citations: 18 back · 0 forward

See the full prosecution history — every USPTO and applicant action on this file, in order.

Term & fees

See the term timeline — pendency span, in-force span, the maintenance fees paid and both computed expiry dates.

Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20100170266 A1	8 Jul 2010

Validity challenges

See the validity challenges on record — reexaminations, IPRs and PGRs, with their institution decisions and outcomes.

Citations

See every patent this one cites and every patent that cites it back — publication, assignee, and how each one was found.