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concentrations, steam quality can be impaired. In addition, hardness salts can precipitate from the boiler water to form sludge and eventually scale, which deposits on the internal surfaces of the boiler. The result: a serious loss of boiler efficiency, and possibly
Blow down operation is used to minimize A. scale formation in boiler B. sludge's deposition in boiler C. avoiding fast corrosion of boiler D. avoiding wet steam formation Ans. A Que42. Caustic embrittlement in high pressure boiler is caused by A. use of higher hardness in water B. presence of soda in feed water C. presence of weak base – strong acid salts in feed water D. all of the …
2020/4/12 · Common issues found on Boiler feed water due to scaling. If the inside of a boiler is scaled, there is a great risk that the boiler material will overheat, leading to tube failure. The efficiency of operation will also be adversely affected. Hardness in the feed water will usually present problems in relation to the operation of boilers.
2010/1/29 · Hard Scale(Scale) - Forms in steam boiler -Has the appearance of a white and brown concentration -smooth texture Soft Scale(Sludge) -Forms in the hot water heaters -Appears as a thick,brown or
Que 10: State harmful effects of Scale and Sludge formation in boilers. Explain disadvantages of scale & sludge formation in Boilers. Answer: Boilers are used for steam generation. When hard water is evaporated, progressively the concentration of dissolved salt is
An improved steam boiler scale inhibitor, sludge (TSS) and Total Dissolved Solids (TDS) control, and automatic bottom blow-down management system which totally eliminates the use of scale inhibitor chemicals and eliminates manual blow down for sludge control
2021/5/19 · Scale can cause lots of problems in steam boilers, especially if it's a process-steam boiler and some or all of the condensate gets dumped (think bakeries). Lost condensate means lots of fresh, cold feed water, and that brings in the calcium and magnesium, which will cling to the hottest surfaces of the boiler, slow heat transfer, raise fuel bills, and cut years from the life …
Boiler Scales As all of us are aware, in a boiler, steam formation takes place because of heat transfer from fire side to water side. So, performance of any boiler not solely but mainly depends on the efficiency of the heat transfer. Metals are good conductors of
As a result, the sludge and scale formation in boiler is prevented. Moreover, this treatment : (1) prevents the deposition of iron oxides in the boiler, (2) reduces the carryover of oxides with steam, and (3) protects the boiler units from corrosion by wet steam (steam containing liquid water).
Know about common issues that can arise in steam boiler drums, which can affect steam boiler efficiency. For industrial units in India it is important to maintain steam boiler drums due to environmental and fuel quality factors. Know more how you can perform maintenance of steam boiler drums for effective operations.
2016/3/12 · BOILER PROBLEMS. 5. Sludge and Scale Formation In Boilers In a boiler, water is continuously evaporated to form steam .This increases the concentration of dissolved salts Finally a stage is reached when the ionic product of these salts exceeds their solubility product and hence they are thrown out as precipitates.
If the pH of the boiler water is higher than 11.5 and at the same time the boiler water is transparent, this fundamentally indicates the absence of sludge formation processes in the boiler. At the same time, if the pH of the boiler water is from 8.5 to 9.5 and the water is transparent in most cases this indicates an active scale formation in the boiler, and requires …
2010/2/5 · Hard Scale(Scale) - Forms in steam boiler -Has the appearance of a white and brown concentration -smooth texture Soft Scale(Sludge) -Forms in the hot water heaters -Appears as a thick,brown or
EC: Lesson 11. Scale and sludge formation in boilers
MgCO 3 may further decomposes near boiling point of water to give Mg (OH) 2. MgCO 3 + H 2 O = Mg (OH) 2 + CO 2. These salts precipitate and deposited inside the boiler as scale and sludge. 4. Formation of silicates: If small amount of SiO 2 is present in boiler feed water it …
The control of boiler water pH and alkalinity levels are important issue affecting the operation and maintenance of industrial boiler systems and steam raising plant. To ensure that such boiler systems are well maintained and operate at optimum efficiency it is essential that the correct water conditions are maintained at all times.
Answer: The most common problems in boiler is of scale formation and sludge deposition. Scales - Scales are formed out of salts. These salts come inside the boiler through water in form of soluble solids and are precipitated when the concentration level increases
Scale formation on the internal surfaces of boilers and steam systems is a significant issue. If left untreated scale can build-up on the internal surfaces of pipework, boiler tubes and other heat transfer surfaces to act as an insulator and reduce boiler efficiencies significantly.