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Boilers/Burners

Power 101: Flue Gas Heat Recovery in Power Plants, Part III

COAL POWER magazine :: Operations & Maintenance >> 
Every power engineer must have a firm grasp of the rudiments of how fuel is processed to produce electricity in a power generation facility. With this article, we conclude our three-part series on the essentials of recovering heat from flue gas to dry and process coal, with the goal of improving overall plant operating efficiency....

Read more: Power 101: Flue Gas Heat Recovery in Power Plants, Part III

Pulverized Coal Pipe Testing and Balancing

COAL POWER magazine :: Operations & Maintenance >> 
If you want the most accurate test results, it's worth the extra effort to take isokinetic coal samples from coal pipes when collecting fuel and air measurements. Together, the data collected will allow more accurate balancing of coal pipes, measure fuel fineness, and improve the combustion efficiency of your steam generator....

Read more: Pulverized Coal Pipe Testing and Balancing

Power 101: Improving the Performance of Boiler Auxiliaries, Part I

COAL POWER magazine :: Operations & Maintenance >> 
Boiler auxiliary equipment often receives no respect for the role it plays in maintaining efficient boiler performance. In this second installment of our Power 101 series, we examine the design and performance of the air preheater....

Read more: Power 101: Improving the Performance of Boiler Auxiliaries, Part I

Flue Gas Analysis as a Furnace Diagnostic Tool

COAL POWER magazine :: Operations & Maintenance >> 
Combustion flue gas analysis has been used to optimize the boiler air/fuel ratio for decades. Measuring the amount of excess oxygen and/or carbon monoxide in combustion flue gases gives an indication of boiler efficiency and, thereby, plant operating economics. New sensors make those measurements simple and accurate....

Read more: Flue Gas Analysis as a Furnace Diagnostic Tool

Continuous SO3 Monitoring Can Reduce Sorbent Consumption

COAL POWER magazine :: Operations & Maintenance >> 
An unintended consequence of employing selective catalytic reduction and wet flue gas desulfurization to reduce nitrogen oxide and sulfur dioxide levels at coal-fired power plants has been unwanted sulfur trioxide (SO3) emissions. Picking the right sorbent in the right amount can eliminate that problem....

Read more: Continuous SO3 Monitoring Can Reduce Sorbent Consumption

Power 101: Improving the Performance of Boiler Auxiliaries, Part II

COAL POWER magazine :: Operations & Maintenance >> 
Efficient boiler operation requires boiler auxiliary equipment to operate in harmony. The air preheater, for example, though it has few moving parts, is vital to maintaining efficient boiler performance. In this second installment of our Power 101 series, we examine performance degradation caused by corrosion and fouling of the air preheater that results from the combustion of coal plus the effects of ammonia and sodium bisulfite injection for SO3 mitigation....

Read more: Power 101: Improving the Performance of Boiler Auxiliaries, Part II

Clinker Minimization at San Miguel Electric Co-Op

COAL POWER magazine :: Operations & Maintenance >> 
San Miguel Electric Cooperative selected and installed an automatic sootblowing system for its Unit 1 to minimize clinkers in the boiler that caused semi-annual unscheduled outages. New boiler surface-cleaning equipment and intelligent cleaning software eliminated these expensive outages....

Read more: Clinker Minimization at San Miguel Electric Co-Op

Respect Your Refractory

COAL POWER magazine :: Operations & Maintenance >> 
Because refractory is out of sight inside the gas flow path of a steam generator and its auxiliaries, it's also often out of mind. That is, until the refractory fails and causes a forced outage....

Read more: Respect Your Refractory

Power 101: Improving the Performance of Boiler Auxiliaries, Part III

COAL POWER magazine :: Operations & Maintenance >> 
Efficient boiler operation requires boiler auxiliary equipment to operate in harmony. In this third and last installment of our Power 101 series, we examine ways to decrease the auxiliary power requirements of boiler auxiliaries....

Read more: Power 101: Improving the Performance of Boiler Auxiliaries, Part III

Condenser Performance Improvement Through Innovative Cleaning and Leak Detection Technologies

COAL POWER magazine :: Operations & Maintenance >> 
One of the largest returns on investment a plant can achieve is the improved condenser performance that results from an effective condenser tube cleaning. Perhaps it is time to reevaluate your choice of cleaning technologies, establish an optimal cleaning schedule, and add routine air and water in-leakage surveys to your plant's maintenance schedule....

Read more: Condenser Performance Improvement Through Innovative Cleaning and Leak Detection Technologies

Pulverizers 101: Part I

COAL POWER magazine :: Operations & Maintenance >> 
Pulverizers prepare raw fuel by grinding it to a desired fineness and mixing it with the just the right amount of air before sending the mixture to boiler burners for combustion. In Part I of three parts, we'll examine the essentials of pulverizer capacity, what should be done after a coal pulverizer fire or other incident, and how to tune up pulverizer performance. In future articles we'll discuss measuring pulverizer performance and performance optimization....

Read more: Pulverizers 101: Part I