Unlike conventional flue and smoke tube boilers, once-through boilers have the characteristic technologies listed below.
· The basic structure has no steam drum and is a simple structure mainly composed of the header and water tube. The water content is very small, at approximately 1/20 to 1/30 that of conventional boilers.
· Special heat transfer fins are positioned at the appropriate places to enable compact boiler structure with high heat transfer performance.
· Optimized economizers can be included in a package to provide high efficiency.
Higher efficiency steam boiler
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ObjectiveTechnology
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ObjectiveTechnology
On actual boiler facility, the required steam amount varies depending on the situation of the operation of the machinery using the steam. Boiler load adjustments, i.e. the combustion adjustments, are performed to respond to these variations. When boiler load falls, so does operation efficiency. A high proportion of boiler facility operation is in this low load region, which is important from the viewpoint of efficiency improvement and reduced carbon emissions. A solution to this is provided by a multiple installation system for once-through boilers.
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ObjectiveTechnology
Boiler management equipment refers to equipment which constantly monitors the boiler facility.
In addition to monitoring the operation situation and anomalies on the boiler, it also has a monitor function and recording function to display the historical data such as the steam pressure and amount of steam in real time. -
ObjectiveTechnology
High performance once-through boilers have a built-in communications function and it is possible to perform data communications with the maintenance office.
If any symptoms or anomalies occur on the boiler that may lead to failure, then the boiler itself connects to the office via a telephone line and reports the anomaly data.
Also, there are communications from the maintenance office to the boiler as appropriate and it is possible to collect data such as boiler efficiency and gain an understanding of the situation of the boiler operation. -
Objective
In addition to improving the efficiency and reducing carbon emissions on the main unit of the boiler itself, it is also important that the unused waste heat is used effectively and that the heat losses from various points are reduced.
To this end, measures are taken such as heat recovery from the steam condensate after its use in the facility, recovery of the boiler blowdown heat, heat insulation on the steam piping, and action required for steam leaking from traps. -
ObjectiveTechnology
Understanding the existing situation is the first step to improving efficiency and reducing carbon emissions on boiler facility.
Analysis is performed at companies with boilers by organizing and analyzing the data from boiler management diaries or by measuring the actual operation situation and boiler efficiency by installing sensors such as flowmeters on the boilers when they are in operation.