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Cleaning Your HRSG Tubes Improves Performance | NAES

Cleaning Your HRSG Tubes Improves Performance. by Sanjeev Jolly, P.E. - Senior Engineer, Engineering Services, NAES Corporation. A number of conditions can cause fouling in a heat recovery steam generator (HRSG): deposits plugging the finned tubes; sulfur in the fuel reacting with ammonia used for NOx control, causing salts to form; and corrosion resulting from tube leakage, acid and water

water tube boiler hrsg - hotel-barriere-walbeck.de

Water tube boiler HRSG - zbghorizontalboiler. 2019-4-22 · ZG Boiler is a manufacturer of water tube boiler HRSG (waste heat recovery systems), The waste heat recovery (HRSG) boiler is used for waste heat recovery, covering industries of steel mill, metallurgy nonferrous metal, petrochemical, paper-making, etc. Read More

How to Alleviate Waterside Issues in Boilers and HRSGs

Prior to that time, formation of hard scale and severe corrosion led to boiler tube failures and explosions. Soda ash/washing soda (Na 2 CO 3) was the first chemical used to treat boiler water

Special Section: Flow & Level: Boiler drum level control - ISA

The length of the probes is determined by the boiler manufacturer. My experience is the low water shutdown probe is 1½ to 2½ inches above the water tube boiler connections. The basic indication of the drum water level is commonly shown in a sight gage glass (bull's eye) connected to the boiler drum.

Classification of boilers | CrazyEngineers

The whole point is that the Babcock-Wilcox is a water tube boiler designed for large volumes of steam, while the Cochran one is a firetube one for small plants designed with a small foot print.

Chemical Clean, Passivation | New Boiler Cleaning Pipe Work

Chemical Clean and Passivation . tubes and other interior boiler surfaces. Failure to remove this inorganic residue results in pitting and further corrosion and eventually, tube failure. It is common practice for HRSG fabricators to locally heat-treat these areas of the harp sections to avoid excessive corrosion of the finned surfaces

What is a downcomer in a boiler? - Quora

Down comers are the Pipelines which are connected between Boiler Steam drum And water panel headers. Water coming out from the Boiler Feed pumps goes to the feed water heaters first there will be increase in the water temperature. Again it enters

fire tube boiler vs water tube boiler

Comparison Between Fire Tube and Water Tube Boiler. Comparison between Fire Tube and Water Tube Boiler can be done in 14 aspects. Those aspects are operating pressure, passage of material type in tubes, rate of steam generation, handling of load fluctuation, floor area requirement, efficiency, operator skills, design, maintenance cost are listed below in

PDF Technical Guidance Document: Steam Purity for Turbine

Drum boiler or HRSG (drum-type) Boiler in which steam (generated in heated evaporator tubes) is separated from water in an unheated horizontal pressure vessel (drum). The liquid phase is recirculated to the evaporator. Feedwater Water that is pumped into a boiler or HRSG to balance the steam production

Heat Recovery Steam Generator - an overview

The heat recovery steam generator (HRSG) is composed of numerous mechanical heating surface components (superheaters, evaporators and economizers) and steam drums. The heating surface elements are bare and finned tubes integrated with collector headers and interconnecting piping systems.

How Water Tube Type Steam Boilers Work | Miura Boilers

Water-tube boilers also have a downcomer tube that connects the steam drum to the feedwater drum. If the steam cools and condenses back into water droplets, that water can drain from the steam drum to the feedwater drum via the downcomer tube. This allows that water to re-enter the boiler's water supply, go back into the tubes, and once again

Drawing of an HRSG - Boiler and Pressure Vessel

RE: Drawing of an HRSG nhliew (Mechanical) 18 Jan 10 06:20 curtis & rmw, i think that supercritical means that the steam produced from the boiler is at higher pressure and/or temperature than the critical values for water.

Water-tube Package Boiler - Babcock & Wilcox

Water-tube Package Boiler More than 5,000 units and 150 years of experience B&W's water-tube package boilers have an established reputation for reliability and proven performance in a variety of industries.

Acoustic Leak Detectors for Combined Cycle HRSG Boilers

Acoustic Steam Leak Detection systems has been used successfully for decades as a valuable tool for the management of boiler tube steam leak for early tube-leak detection on coal fired boilers and is being utilized now by Combined Cycle Power Station with Heat Recovery Steam Generator (HRSG). The system provides a means by which boiler tube leaks can be detected before they can otherwise be

China Industrial Boiler manufacturer, Power Station Boiler

The manufacturing capacity of the company: The company can design and manufacture all kinds of "Grade A" industrial boilers, power station boilers, and HRSG & waste heat boilers, as well as 250mm thickness pressure vessel which weigh up to 250tons; It has 3 automatic production lines for coiled tube processing and has the equipment and

Heat Transfer Solutions

When our customer needs a repair to their cogen's HRSG, their firetube boiler, or their water tube boiler, HTS is ready to respond - 24/7. When our customer needs a new boiler, feed system, heat exchanger, pumps, cooling tower, piping, or anything else to keep your plant in operation, HTS can provide the skilled labor, materials, and

PDF Design and Modification of HRSGs for Cycling Operations PG.

TYPICAL COMBINED CYCLE HRSG A typical Combined Cycle HRSG produces steam at three pressure levels plus steam reheat. The auxiliary firing through a duct burner is most often used to increase the steam production. There is also a feed water heater to increase the heat recovery and reduce the deaerating load of the integral deaerator. The

Corrosion fatigue failure of tubes in water tube boilers

Chemicals Industries Division of HSE is aware of three relatively recent failures associated with water tube boilers. Each of these appears to have been caused by corrosion fatigue of the outer water wall tubes. This alert, which is targeted in particular at the chemical industries sector, describes the incidents and outlines the action that should be taken by duty holders.

HRSG - Heat Recovery Steam Generators | Cain Industries

Packaged assemblies include: heavy wall tank as mounted on a 5' high rectangular tube structural steel stand with water level controls and low water cutout, gauge glass and thermometer, magnesium anode; (2) 2" NPT vents; 2" NPT condensate return; 1" NPT drain with shut off valve; Duplex or Triplex boiler feedwater pump system; electrical

HRSG Heat Recovery Steam Generator manufacturer - quality

Quality HRSG Heat Recovery Steam Generator, Boiler Economizer & Boiler Fin Tube suppliers & exporter - all products made in China. English English French German Italian Russian Spanish Portuguese Gas Fired Hot Water Steam Boiler / Industrial Water Tube Boiler Single Drum.

Zhangjiagang Hua Dong Boiler Co., Ltd. - CFB Boiler,HRSG

Zhangjiagang Hua Dong Boiler Co., Ltd., Experts in Manufacturing and Exporting CFB Boiler,HRSG Boiler and 1383 more Products. A Verified CN Gold Supplier on Alibaba.com.

HRSG SIMULATION V.Ganapathy | Boiler | Steam

HRSG SIMULATION V.Ganapathy - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. HRSG SIMULATION V.Ganapathy Knowing gas flow,temperature & analysis and steam parameters,establish HRSG temperature profiles,duty and steam flow

Tube Failures in High Pressure Boilers - Bright Hub

There are twenty-two primary reasons for tube failures in a boiler, which can be classified under six major groups. They can be analyzed and corrective and preventive action can taken. Good operating and maintenance practice reduces tube failures. Tube failures during the initial operation period, the normal operation period, and after ten to fifteen years operation show different trends.

[PDF] Failure Mode Effect Analysis (FMEA) on Heat Recovery

This study is on Failure Mode Effect Analysis (FMEA) on Heat Recovery Steam Generators (HRSG) at UTP Gas District Cooling (GDC) plant. HRSG is a heat exchanger which converts water to steam at elevated temperature for power generation or process purposes. Operating at high temperature and pressure, the HRSG is subjected to several types of failures.

HRSG Design and Operation - Tetra Eng

HRSG Design and Operation Course Overview: The course is primarily intended for O&M staff at all levels of experience working in combined cycle power plants, but should also be of interest to engineers and managers involved in new project development.

What is the purpose of the steam drum on a water tube

What is the purpose of the boiler? Well it is to convert water to steam . In water tube boilers water goes through the tube and it gets converted to steam. At the end all the water need not necessarily convert into steam. It might be in a mixed ph

Boiler - GRAND KARTECH

The ASME S Stamp fabrication, are fire tube and water tube type HRSG that are customs designed to plantsite conditions. F. Hoken Eurotherm Thermal Oil Heater HOKEN Eurotherm are German engineered and local manufactured thermal oil heaters ranging from 100 kW - 20 MW thermal output.

Water-tube boiler - Wikipedia

A high pressure watertube boiler (also spelled water-tube and water tube) is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which heats water in the steam-generating tubes.In smaller boilers, additional generating tubes are separate in the furnace, while larger utility boilers rely on the water-filled tubes

List of Global Hrsg Companies

Power Plant,CHP Plant,Cogeneration Plant,Hot Water Boiler,Waste Heat Boiler,Heat Recovery Steam Generator,Fin Tube,Gas Turbine,ACS,HRSG. Address:30 Vologodskiy Lane VESPL Boilers, EPC-Power plants, HRSG, WHRS, BoP. Address:T Nagar Chennai Tamilnadu 600033 India Trimac International LLC

PDF The International Association for the Properties of Water

Makeup Water Water which is added to compensate for losses of water and steam from the system Once-through boiler or HRSG Boiler in which output steam is generated from input water by complete evaporation. There is no recirculation of boiler water. Oxidation/Reduction Potential ORP Electrochemical potential of an inert electrode

Water Tube Boiler - Construction, Operation

Special features of water tube boiler: Water tube boilers have the high evaporating capacity (20,000 to 40,000 kg/h) compared with other boilers. The operating pressure lies between 11.5 to 17.5 bar. The draft losses are minimum. The defective tubes in water tube boilers can be identified and replaced easily.

DAELIM Boiler

- HRSG BOILER - S-Oil Corporation(ulsan) smoke tube boilers: water tube boilers: waste heat boilers: waste wood fired boilers: coal fired boilers: smoke tube boilers: water tube boilers: coal fired boilers: waste wood fired boilers : 19-1 Sakok-ri, Yeoju-gun, Kyonggi, Korea tel : 82-31-881-1010

Boiler Interview Question & Answer - Askpowerplant

In water tube boilers the water passes through the tubes and the hot gases passes out side the tubes where as in case of fire tube boiler the hot gases passes through the tubes and the water passes over the tubes. Q(C).What are the parameters required to estimate the boiler efficiency by 'direct method'? (HRSG). Induced Draft cooling

Critical HRSG | Power Engineering

But, an accounting is needed for the influence of ammonia that transports into the HRSG HP evaporator from the feedwater if tri-sodium phosphate in particular is utilized for boiler water treatment.

Heat Recovery Steam Generators (HRSG) - Boiler Australia

RENTECH BOILER SYSTEMS offers a full range of custom-designed HRSG systems to meet the most demanding project requirements. Custom-engineered HRSGs for gas turbines from 1MW to 40 MW Factory assembled natural circulation water tube designs

Difference between Fire Tube Boiler and Water Tube Boiler

The main difference between fire tube and water tube is that in fire tube boiler the flue gases flow in the tubes and water flows from the shell and in water tube boiler, water flows from the tubes and the flue gases from the shell or passes over the tubes. This is the key difference between these boilers.

Australasian HRSG Users' Group (AHUG)

So in 2019 AHUG is changing to ABHUG (Australasian Boiler and HRSG Users Group). ABHUG will continue to concentrate on HRSG aspects but will add the technical areas common in fossil and HRSG plants such as tube failures, steam turbine, high energy piping, valves and regulatory issues.

Scaling in boilers - Lenntech

Boiler scale is caused by impurities being precipitated out of the water directly on heat transfer surfaces or by suspended matter in water settling out on the metal and becoming hard and adherent. Evaporation in a boiler causes impurities to concentrate. This interferes with heat transfers and may cause hot spots. Leading to local overheating. Scaling mechanism is the exceeding of the

Heat Recovery Steam Generator | Boiler | Steam | Free 30

flow over the tubes , water tube boilers requires less surface area and hence the gas pressure drop can be lower than in a fire tube boiler. The most important component would, of course, be the Evaporator Section, since without this coil (or coils), the unit would not be an HRSG.

Boiler Water Treatment | Ecolab

Over 85 years of diverse industry experience, our commitment to develop innovative boiler water treatment technologies continues today. Chemical treatment coupled with 3D TRASAR technology provides comprehensive boiler water treatment solution mitigating scale and corrosion of the boiler system.