System and method for optimization of minimizing slag formation

Abstract

Optimized systems and methods for reducing slag formation and power generation systems are disclosed. The optimized system includes a boiler, multiple temperature sensors, multiple CO sensors and a controller. The boiler includes a plurality of burners and an exhaust port for exhausting tail flue gases from the boiler. A plurality of temperature sensors communicates with the plurality of boiler sub-regions within the boiler for sensing temperatures of the plurality of boiler sub-regions. A plurality of CO sensors are in communication with the plurality of exhaust sub-sections adjacent the exhaust port for sensing CO levels in tail gas exiting the boiler through the plurality of exhaust sub-sections. Each boiler sub-section is associated with at least one exhaust sub-section. The controller optimizes at least one operation of the boiler based on the sensed temperatures in the plurality of boiler subzones, the sensed CO levels in the plurality of exhaust subzones, and the correlation between the plurality of boiler subzones and the plurality of exhaust subzones parameters, which can reduce the formation of slag in the boiler and improve the overall thermal efficiency of the boiler.

Description

technical field [0001] The present invention relates generally to boiler systems, and more particularly to an optimization system and optimization method for reducing slag formation in a boiler and a power generation system for generating electric power having the optimization system. Background technique [0002] Boiler systems that burn fossil fuels have been used to generate electricity. A type of fossil fuel fired boiler system that burns an air / coal mixture to produce heat energy, which raises the temperature of water to produce steam. This steam is used to drive a turbine generator that outputs electricity. [0003] A problem associated with the boiler system described above is that the boiler system may have spatial areas or locations where slag or unburned hydrocarbons start to adhere to the walls of the boiler system. When the slagging becomes relatively thick, the slagging can break off the walls and damage equipment within the boiler system. Thus, if not contro...

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Problems solved by technology

Therefore, if not controlled in time, this slagging can impact boiler system maintenance intervals by causing premature and costly clean-up operations

The resulting downtime in turn adversely affects the sales of electricity production

At the same time, these slags reduce the heat transfer coefficient (performance) at these locations in the superheat and reheat zones because it reduces the overall thermal efficiency of the boiler system and increases the operating costs of the boiler system used to generate electricity

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