Methods and systems to increase efficiency and reduce fouling in coal-fired power plants
First Claim
1. A system for reducing fouling and improving efficiency in a coal-fired power plant, comprising:
- an analyzer grid, the analyzer grid comprising a plurality of sensors that measure gas characteristics through an approximate cross-section of a flow through a boiler of the coal-fired power plant;
a plurality of air injectors with enhanced controllability;
means for analyzing the measurements of the gas characteristics; and
means for controlling the air injectors with enhanced controllability;
wherein the air injectors with enhanced controllability each comprises an air injector with yaw control;
wherein the air injectors with enhanced controllability comprise two of the air injectors within a separated overfire air injector port level and two of the air injectors within a close-coupled overfire air injector port level; and
wherein the air injectors of the separated overfire air injector port level and the close-coupled overfire air injector port level are located at the corners of a substantially rectangular furnace, and the two air injectors with enhanced controllability within each of the port levels comprise the air injectors positioned on opposite corners of the rectangle.
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Accused Products
Abstract
A system for reducing fouling and improving efficiency in a coal-fired power plant that may include: 1) an analyzer grid, the analyzer grid including a plurality of sensors that measure gas characteristics through an approximate cross section of a flow through a boiler of the coal-fired power plant; 2) a plurality of air injectors with enhanced controllability; 3) means for analyzing the measurements of the gas characteristics; and 4) means for controlling the air injectors with enhanced controllability. The analysis of the measurements of the gas characteristics may include analyzing the measurements to determine zones of non-homogeneous flow.
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Citations
12 Claims
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1. A system for reducing fouling and improving efficiency in a coal-fired power plant, comprising:
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an analyzer grid, the analyzer grid comprising a plurality of sensors that measure gas characteristics through an approximate cross-section of a flow through a boiler of the coal-fired power plant; a plurality of air injectors with enhanced controllability; means for analyzing the measurements of the gas characteristics; and means for controlling the air injectors with enhanced controllability; wherein the air injectors with enhanced controllability each comprises an air injector with yaw control; wherein the air injectors with enhanced controllability comprise two of the air injectors within a separated overfire air injector port level and two of the air injectors within a close-coupled overfire air injector port level; and wherein the air injectors of the separated overfire air injector port level and the close-coupled overfire air injector port level are located at the corners of a substantially rectangular furnace, and the two air injectors with enhanced controllability within each of the port levels comprise the air injectors positioned on opposite corners of the rectangle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification