A low-pressure fire-tube boiler can usually tolerate high feed-water hardness with proper treatment while virtually all impurities must be removed from water used in some modern, high-pressure boilers. Only relatively wide ranges can be given as to maximum levels of alkalis, salt, silica, phosphates etc, in relation to working pressure.
Firetube boilers may be used in steam or hot water applications within the scope and service restrictions of ASME BPV Code Section I and ASME BPV Code Section IV. They may also be used to heat or vaporize liquids other than water, such as an organic or synthetic fluid. Firetube boilers can be constructed in different configurations.
· PDF fileASME Guidelines: Broken down by feed water and boiler water, and then by firetube. and watertube boilers. 37 TOLERANCES ARE BASED ON PRESSURE & TEMPERATURE Water Constituent Tolerance: 0-300 operating psig : ASME Guidelines: Broken down by feed water and boiler water, and then by firetube. and watertube boilers. Feed Water: Boiler Water: Oxygen .007 ppm; Silica 150 â€¦
· PDF fileASME Guidelines for Water Quality in Modern Industrial Water Tube Boilers for Reliable Continuous Operation:-Boiler Feed Water Boiler Water Drum Pressure (psi) Iron (ppm Fe) Copper (ppm Cu) Total Hardness (ppm CaCO3) Silica (ppm SiO 2) Total Alkalinity** (ppm CaCO 3) Specific Conductance (micromhos/cm) (unneutralized) 0-300 0.100 0.050 0.300 150 700* 7000 301-450 0.050 0.025 0.300 â€¦
asme boiler feed water quality standards. 12-15 Jenny Wu 0. 1.What is the boiler? The other heat energy into the other working fluids, production parameters and quality of provision of equipment known as the boiler working fluid.Boiler equipment, heat-absorbing part is called pot, heat the part called the furnace. For example, water wall, superheater, economizer, etc. can be seen as part of â€¦
Steam drums are a regular feature in many boiler systems. The steam drum provides a space for the saturated steam generated in the tubes and for the separation of moisture from the steam. It is a reservoir of water/steam at the top end of the water tubes in the water-tube boiler. Steam drums store the steam generated in the water tubes and act as a phase separator for the steam/water mixture.
The ASME Boiler & Pressure Vessel Code (BPVC) is an American Society of Mechanical Engineers (ASME) standard that regulates the design and construction of boilers and pressure vessels. The document is written and maintained by volunteers chosen for their technical expertise.
· PDF fileconcentrations, 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 boiler failure. Scale is a buildup of solid material formed on internal boiler surfaces when the concentration of impurities in the boiler water exceeds â€¦