The quality of the water used to produce the steam in the boiler will have a profound effect on meeting the objectives such as safe operation, maximum combustion and heat transfer efficiency, minimum maintenance and long working life.
Percussive sounds ("banging," "hammering," or "knocking") and vibrations in boiler drums or pipes are serious operational anomalies that demand immediate attention. At ZOZEN, we engineer our coal-fired boilers (like the SZL water-tube and DZL fire-tube series) to minimize these risks, but they can still arise due to operational or system issues. Here are the primary causes and ZOZEN's approach to mitigation:
Common Causes & ZOZEN Solutions:Water Hammer (Steam Condensation Shock):
Cause: Ra...
There are two types of burners for industrial steam boilers, depending on how they control the mixture of air and fuel at the key point in the boiler's operation, which is the generation of combustion.
Combustion Efficiency
Combustion efficiency is the effectiveness of the burner only and relates to its ability to completely burn the fuel. The boiler has little bearing on combustion efficiency. A well-designed burner will operate with as little as 15% to 20% excess air, while converting all combustibles in the fuel to thermal energy.
Thermal Efficiency
Thermal efficiency is the effectiveness of the heat transfer in a boiler. It does not take into account boiler radiation and convection losses - for example, from the boiler shell, water column piping, etc.
Fuel-to-Steam Efficiency
Radiation and convection losses will vary with boiler type, size, and operating pressure. The losses are typically considered constant in BTU/hr, but become a larger percentage loss as the firing rate decreases. Boiler design factors that also impact efficiencies of the boiler are heating surface, flue gas passes, and design of the boiler and burner package.
Selecting a biomass-fired boiler for industrial applications involves careful consideration of various parameters to ensure efficiency, sustainability, and cost-effectiveness. Biomass boilers offer an eco-friendly alternative to fossil fuel-based boilers by utilizing renewable resources like wood chips, pellets, and agricultural waste. When choosing a biomass-fired boiler, pay attention to the following parameters:
1. Fuel Type and Availability:
Type of Biomass: The type of biomass fuel availa...
As an industrial boiler supplier, we often encounter the question: "Is it time for an equipment upgrade?" Deciding whether to upgrade your boiler system is a significant decision, impacting not only your operational efficiency but also your environmental footprint and long-term costs. Here’s a comprehensive look at why considering an upgrade or replacement of your boiler is important and how green gas and biomass boilers can be beneficial for your operations.
When to Consider a Boiler Upg...
Black smoke in gas-fired boilers is typically an indication of incomplete combustion, where the fuel is not being burned efficiently. This can happen due to several reasons:
Poor Air-to-Fuel Ratio: The most common cause of black smoke is an improper balance between the air and fuel. Too much fuel or insufficient air leads to incomplete combustion, resulting in black smoke due to unburnt carbon particles.
Dirty or Clogged Burners: Over time, burners can become dirty or clogged, affecting the ef...
