standard boiler Agent and feed water limits
HOT
Capacity:1-20t/h
Rated thermal efficiency: 100-104%
Fixed working pressure: ≤1.6MPa
Applicable fuel:natural gas etc.
HOT
Capacity:0.7-14MW
Rated thermal efficiency:96-98%
Fixed working pressure:≤1.25MPa
Applicable fuel:Natural gas, light oil, etc.
HOT
Capacity:0.7-2.8Mw
Rated thermal efficiency: 97.2-106%
Fixed working pressure:0.1MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:2.8-7.0Mw
Rated thermal efficiency:≥105.5%
Fixed working pressure:-0.02MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:99Kw
Rated thermal efficiency:97.2-104.4%
Fixed working pressure:1.0MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:0.5-4.0 t/h
Rated thermal efficiency:98%
Fixed working pressure:≤1.25MPa
Applicable fuel:electric energy
called the Indian Boiler Regulations, 1950. (2) They extend to the whole of India, except Part B States. pressure through which feed-water passes directly to a boiler. (ii) every reference to a steam pipe or steam pipes shall be deemed to include "owner" includes any person using a boiler as agent of the owner thereofGet Price
The ratio of chlorides in the boiler water to that of the feed water can be used as a means to determine the amount of blowdown required. The chloride test is unsuitable for feedwater with low incoming concentrations and the concentrations in the feedwater must be averaged over time for accuracy. High boiler solids will lead to foaming, priming Get Price
Project Engineering Standard PROCESS DESIGN OF STEAM BOILERS (PROJECT STANDARDS AND SPECIFICATIONS) Page 2 of 45 Rev: 01 April 2011 Lighting 28 Boiler Feed and Boiler Water Quality and Chemical Conditioning 28 Chemical Cleaning 29 Tools 29 PERFORMANCE CONDITIONS 29 General 29 Air and Gas 30 Water 30 Performance Tests 30 GUARANTEE 31Get Price
21 CFR § 173.310 - Boiler water additives. § 173.310 Boiler water additives. Boiler water additives may be safely used in the preparation of steam that will contact food, under the following conditions: (a) The amount of additive is not in excess of that required for its functional purpose, and the amount of steam in contact with food does Get Price
a hot water boiler in which water or other fluid is heated and intended for operation at pressures not exceeding l60 psi or temperatures not exceeding 250 degrees Fahrenheit. (d) Electric Boiler - A power boiler or heating boiler in which the source of heat is electricity. (e) Miniature Boiler - …Get Price
Filter the cooled boiler water sample to remove any suspended solids, which would otherwise give a false reading. Cool to 15.5°C. Add a few drops of a wetting agent to help prevent bubbles adhering to the hydrometer. Place the hydrometer in the sample and spin gently to remove bubbles. Read off the relative density.Get Price
DRAFT BOILER/FEEDWATER GUIDELINESGet Price
Sep 01, 2019 · The recommended TOC limit for boilers of this pressure is 0.5 ppm. The plant had no condensate polisher on the return line, and no one on staff who understood this chemistry. For high-pressure steam generators, the condensate return system should have water purity equivalent to the parameters outlined above for the CPD.Get Price
To maintain boiler integrity and performance and to provide steam of suitable turbine or process purity, boiler feedwater must be purified and chemically conditioned. The amount and nature of feedwater impurities that can be accommodated depend on boiler operating pressure, boiler design, steam purity requirements, type of boiler water internal treatment, blowdown rate, and …Get Price
ASME Code Section I (Power Boilers) can be thought of as a "System Code Section" and includes by reference, ASME B31.1 (Power Piping) with specific rules for Boiler External Piping. Section I Scope •Boilers with an MAWP greater than 15 psi steam or 160 psi water or 250°F water. 2Get Price
21 CFR § 173.310 - Boiler water additives. § 173.310 Boiler water additives. Boiler water additives may be safely used in the preparation of steam that will contact food, under the following conditions: (a) The amount of additive is not in excess of that required for its functional purpose, and the amount of steam in contact with food does Get Price
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** Boiler water Limit:- - Altret ASME offers a continuously evolving portfolio of standards across topics like pressure technology, construction equipment, piping & nuclear components.Get Price
Oct 01, 2021 · CFR - Code of Federal Regulations Title 21. The information on this page is current as of April 1 2020. For the most up-to-date version of CFR Title 21, go to the Electronic Code of Federal Regulations (eCFR). Sec. 173.310 Boiler water additives. Boiler water additives may be safely used in the preparation of steam that will contact food, under Get Price
This standard lays down specifications for feed water and boiler water for low and medium pressure land boilers (boilers operating up to 5·9 MN/m 2). 1.2 Land boilers operating at pressures higher than 5·9 MN/m 2 ; marine boilers and …Get Price
prescribed the recommended chemical composition of feed water, boiler water and condensate for boilers operating above 4.1 MN/m2 ( 42 kgf/cm¶ ). The Committee, however, while revising that standard decided to modify the specification of feed water. boiler water and condensate in light of the latestGet Price
Blowdown of boiler water is adjusted to prevent undesirably high levels of dissolved solids and suspended solids that are circulated in the boiler water. III.B.3 Chelation. Metal cations found in boiler water, such as calcium, magnesium, iron, and copper, can be solubilized to prevent deposition and scale formation. The functional agents in Get Price
The composition of boiler feed water must be such that the impurities in it can be concentrated a reasonable number of times inside the boiler, without exceeding the tolerance limits of the particular boiler design. If the feed water does not meet these requirements it must be pretreated to remove impurities.Get Price
May 05, 2015 · Two types of AVT are; i) AVT (R) Using Ammonia (NH3) and as reducing agent like Hydrazine (N 2 H 4 ), ii) AVT (O) same as AVT ® minus reducing agent i.e. N 2 H 4. Ammonia is commonly used cheaper material to maintain pH …Get Price
Blowdown of boiler water is adjusted to prevent undesirably high levels of dissolved solids and suspended solids that are circulated in the boiler water. III.B.3 Chelation. Metal cations found in boiler water, such as calcium, magnesium, iron, and copper, can be solubilized to prevent deposition and scale formation. The functional agents in Get Price
Water Specification for low to medium pressure boiler. Leave a Comment / Boilers and Heaters. Boiler Feed water Specification:-. Boiler Pressure. 0-20 Barg. 21 o 39 Barg. 40 – 59 Barg. Total hardness as CaCo3, mg/ltr, Max. 10.Get Price
a Reprinted (with permission) from "Boiler Water Limits and Steam Purity Recommendations for Watertube Boilers," American Boiler Manufacturers Association, 1982.. b Actual values within the range reflect the TDS in the feedwater. Higher values are for high solids; lower values are for low solids in the feedwater. c Actual values within the range are directly proportional to the actual …Get Price
burned, and will allow a representative boiler water sample to be collected. 3.1 BOILER WATER SAMPLING COOLER. A commercially available boiler water sample cooler can be used when collecting a boiler water sample. If one is not available, then a 4.6- to 6.1-meter long (15- to 20-foot) coil of copper or stainless steelGet Price
Boiler and feedwater system startup cleaning issues depend on boiler type, heat exchanger equipment type and metallurgy, and success of pre-commissioning cleanliness measures. Without industry standard guidelines for power plant component cleaning methods, the EPC contractor must implement its own methods toGet Price
The water going to the boiler feed water tank must be rendered "soft". If a softener control program is not in place at the plant site, then such a program must be installed. Chemicals added to the boiler feed water tank or directly to the feed water line going to the boiler should be controlled by the boiler feed water pump circuit.Get Price
1. Priming - This is the ejection of boiler water into the steam take-off and is generally due to one or more of the following: -Operating the boiler with too high a water level. -Operating the boiler below its design pressure; this increases the volume and the velocity of the steam released from the water surface.Get Price
Oct 01, 2021 · CFR - Code of Federal Regulations Title 21. The information on this page is current as of April 1 2020. For the most up-to-date version of CFR Title 21, go to the Electronic Code of Federal Regulations (eCFR). Sec. 173.310 Boiler water additives. Boiler water additives may be safely used in the preparation of steam that will contact food, under Get Price
Oct 01, 2021 · Total not to exceed 1.5 parts per million in boiler feed water. Copolymer contains not more than 0.5 percent by weight of acrylic acid monomer (dry weight basis). Polyethylene glycol: As defined in § 172.820 of this chapter. Polymaleic acid [CAS Reg. No. 2Kefid], and/or its sodium salt. [CAS Reg. No. 3Kefid or CAS Reg. No. 7Kefid]Get Price
Boiler Water. The boiler water itself must be dosed in order for the boiler to run efficiently and safely. A chemical imbalance can lead to corrosion and damage to the system and this damage can ultimately lead to boiler failure and injury. Boiler water analyses are basically aimed at keeping the parameters within established limits. Tests includeGet Price
Drum pressure (psi) 0-300 301-450 451-600 601-750 751-900 901-1000 1001-1500 1501-2000 Iron (ppm Fe) 0.100 0.050 0.030 0.025 0.020 0.020 0.010 0.010 Copper (ppm Cu)Get Price
Filter the cooled boiler water sample to remove any suspended solids, which would otherwise give a false reading. Cool to 15.5°C. Add a few drops of a wetting agent to help prevent bubbles adhering to the hydrometer. Place the hydrometer in the sample and spin gently to remove bubbles. Read off the relative density.Get Price
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