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  • DRAFT BOILER/FEEDWATER GUIDELINES

    Lake water has approximately 180 ppm of dissolved solids. 1,000,000 pounds of this water will contain approximately 180 pounds of solids. A 100 hp boiler vaporizing 3,450 pounds of this as make-up water would leave behind 0.62 pounds of solids. Well water can have as high as 1,250 ppm of dissolved solids.Learn More

  • POWER PLANT CHEMISTRY - SlideShare

    Mar 04, 2015 · Open CBD , makeup will go high. (Heat as well as DM water loss) 2. Increase the concentration of phosphate and free alkalinity in boiler. 3. Limit as for as possible the boiler de- superheater spray water to prevent contamination of the system. 4. Isolate one path of condenser, and see the results and vice versa.Learn More

  • Demineralized Water - an overview | ScienceDirect Topics

    Demineralization (DM) Demineralized water is required particularly for boiler feed purposes. In case where the total dissolved solids (TDS) of the raw water is very high, demineralized (DM) water is used for the cooling tower make–up water. In one variation, DM water is used as the make–up water for the urea plant direct cooling tower (CT).Learn More

  • Presentation by S.K.SHARMA D.G.M(CHEMISTRY) NCPS …

    Dec 19, 2009 · The guidelines for water quality control of water/steam in boiler plants of 60 kg/cm2 and above are furnished as recommended by many boiler designers. The feed water limits. For drum operating pressure kg/cm2 (g) 61-100, 101-165, and 166-205 with PO4 treatment type of boilers: Hardness, in ppm, has to be nil for all pressures. pH at 25oC for Cu alloy pre boiler system plants has …Learn More

  • Boiler Efficiency and Steam Quality: The Challenge of

    Older boilers, while much larger, have a larger steam space which can tolerate greater changes in steam demand without severe changes in steam pressure or water level. High Entrainment Fools Low-Water Level Alarm. In some circumstances, steam demand increases are so disruptive to boiler operation that boiler life as well as steam quality suffers.Learn More

  • Boilers and Steam Lines Chemical Cleaning – IJERT

    In Dangote Fertilizer Plant all Boilers are High Pressure boilers. In higher-pressure boilers, the major deposit removed is magnetite and some copper. The internal surfaces of a boiler in contact with water and steam must be kept clean and free of deposits to assure efficient heat …Learn More

  • Power Plant Chemistry FEED WATER TREATMENT

    Apr 15, 2015 · Open CBD , makeup will go high. (Heat as well as DM water loss) 2. Increase the concentration of phosphate and free alkalinity in boiler. 3. Limit as for as possible the boiler de- superheater spray water to prevent contamination of the system. 4. Isolate one path of condenser, and see the results and vice versa.Learn More

  • dm water quality for high pressure boiler

    Water quality in high pressure boilers ensure availability of boiler, increase the mean time between failures, and reduce the need for post operational acid cleaning in boiler. With super critical pressure boilers and power cycles gaining importance the need for maintaining 100 % …Learn More

  • Recommended ABMA & ASME Boiler Water Limits Boiler …

    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 boiler failure.Learn More

  • Using EDI to Meet the Needs of Pure Water Production

    nology for the production of pure water in the power and microelectronics fields. Two of the field installations described are in the power industry and use EDI to produce high-quality water for boiler makeup. The third installation of interest applies EDI technology in the microelectronics industry for microchip fabrication rinse water.Learn More

  • Chemical Regime in Water Quality Management of High

    Dec 19, 2009 · The guidelines for water quality control of water/steam in boiler plants of 60 kg/cm2 and above are furnished as recommended by many boiler designers. The feed water limits. For drum operating pressure kg/cm2 (g) 61-100, 101-165, and 166-205 with PO4 treatment type of boilers: Hardness, in ppm, has to be nil for all pressures.Learn More

  • Water Treatment Requirements for Low and Medium Pressure

    Apr 27, 2015 · The definition of low and medium pressure is somewhat discretionary. For the purposes of this discussion, low pressure shall apply to boilers up to 150 psig. These boilers are typically used in space heating applications where the percentage of return condensate is high. Medium pressure boilers fall in the range of 150 to 650 psig.Learn More

  • Characteristics of boiler feedwater - Lenntech

    Feed-water purity requirements therefore can vary widely. 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 Learn More

  • What Are the Properties of Demineralized Water and How Can

    Chemical Regime in Water Quality Management of High Pressure Boiler …Learn More

  • WATER CHEMISTRY REVIEW - eecpowerindia.com

    Condenser Water Quality • BOILER & FEED WATER. 4 Water Treatment Plant Substandard effluent (high silica), Non-reactive silica, iron and aluminum, or Organic matter Eliminating Repeat DM Water Contaminant Ingress Events Ensure the following are properly performedLearn More

  • Product Capabilities

    Potable Water Quality Monitoring Test Kits (Presentation) BOILER WATER TREATMENT CHEMICALS : The trace mineral and metal impurities in boiler feed water tend to form deposits in the boiler. The presence of dissolved oxygen even at a lower level after de-aeration can lead to pitting corrosion in the boiler.Learn More

  • (PDF) Fouling of Ion Exchange Resin of DM plant by

    DM water of high quality is required for a high-pressure boiler. IX resins are the heart of every DM or deioniza-tion (DI) plant. To get consistent and expected results from the DM plant, it is Learn More

  • Boiler Water Treatment Part 2 – Internal Treatment

    • Pressure range – 60-84 bar • Critical needs – High quality makeup water • External pre-treatment through distillation and mechanical deaeration – High purity steam to the turbine – No excess hydrate alkalinity – Precise control of total system water treatment High Pressure Boilers •Learn More

  • Water Treatment for High Pressure Boilers in Sugar Plant

    Hence feed water is to be very pure for high pressure boilers. This, in turn, necessitates high purity for make-up water. Demineralisation can only produce acceptable make-up quality for high pressure boilers of the order of specific electrical conductivity less than 0.5 mmho/cm with hardness completely removed and silica less than 0.02 ppm. WhenLearn More

  • Water Handbook - Ion Exchange & Water Demineralization | SUEZ

    Mar 26, 2018 · Boilers that generate steam to power turbines require high-pressure boilers and therefore more complex feed water treatment system to remove as many impurities as possible. When steam is produced inside the boiler, the water particles collect and condense, then are recycled and used as part of the boiler feed water.Learn More