Boilers are integral for creating energy using steam in multiple industrial processes. Natural sources of water, such as bores, springs and rivers, contain impurities that may present problems, such as corrosion and harmful deposits in industrial boiler systems. Therefore, a boiler feedwater system removes carbon dioxide and oxygen from water to reduce the chances of damage to the boiler system. This article reviews the common issues with the feedwater tanks and how to avoid them.
Harmful Impurities Can Damage the Feedwater System
Dissolved and suspended minerals, gasses and hardness are the common problems in boiler systems because of the use of municipal or raw water sources. The impurities, coupled with trace amounts of carbon dioxide and oxygen, can damage pipes and machinery within a short timeframe. The substances can cause corrosion, scaling and fouling of the boiler system. Therefore, buyers should be mindful of the manufacturer's recommendations on water quality. It is wise to consult an expert to make the right calculations so that the system can work optimally.
Sometimes, a boiler will experience a high accumulation of sediments, such as oils and solids. The sludge is characterised by its softness that hardens when it comes into contact with heat exchangers. Sludge buildup is a pointer to a problem with the filtration system upstream. Solid accumulation can cause issues with internal piping by developing an insulation layer that subsequently causes excessive heating. Consequently, heat buildup is likely to lead to a blowout of the boiler system. Therefore, ensure that you rid your system of any sludge-causing particles before significant problems develop. Ultrafiltration and microfiltration technologies are suitable for removing suspended and dissolved particulate matter.
Corrosion in boiler systems refers to the deterioration of the metal components of the system. As stated earlier, dissolved gases can break down metal elements, leading to cracking and stress. Furthermore, high levels of chlorides in the water can contribute to the corrosion phenomenon. Remember that a boiler system with high-pressure levels is more prone to severe corrosion compared to its low-pressure counterpart. Appropriate corrosion inhibitors, coupled with proper regulation of the water pH, are necessary to reduce corrosion.
Location of Chemical Injection
A feedwater tank requires the injection of chemicals to protect the tank and enhance reaction by oxygen scavengers. Poor chemical injection, on the other hand, can diminish the treatment quality of the feedwater boiler system. It is advisable to inject chemicals beneath the waterline via a quill. Install the injector between the feedwater supply and the cold water makeup to ensure that the latter travels past the injection area, and hence, treated before getting into the boiler. The most recommended spot is the centre of the feedwater tank below the waterline.
For more information, contact a feedwater tank service in your area.Share