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High Pressure Boilers

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When a boiler operates with steam pressure greater than 80 bars, it is referred to as a high-pressure boiler above 80 bars. High pressure is widely used in power generation in thermal power plants. Read More…

High Pressure Boilers High pressure boilers are tanks or vessels that facilitate the transfer of heat from its source to water or steam while maintaining a high internal pressure.
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Leading Manufacturers

Schenectady, NY  |  518-344-7490

We strive for the best at Unilux Advanced Manufacturing LLC. Our boilers are designed with superior materials. We are proud to say that we produced the world's first UL/FE boiler and our units provide the highest levels of safety and accountability.

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Unilux Advanced Manufacturing, LLC $$$

Pulaski, NY  |  315-298-5121

As the inventor of the vertical tubeless boiler, Fulton has a reputation for success dating back to 1949. We`re a global manufacturer of steam, hot water and hydronic boilers, thermal fluid heaters, and custom engineered systems.

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Fulton $$$

Fremont, CA  |  800-227-1966

Nationwide Boiler is a leading supplier of new and reconditioned boilers for industrial facilities worldwide. We’re a manufacturer’s representative and stocking distributor for B&W package watertube boilers and Superior package firetube boilers, and we have fully reconditioned boilers in a variety of types and sizes. With sales, service and equipment depots throughout the U.S., we strive to provide our customers with reliable equipment and superior service. Call today to learn more!

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Nationwide Boiler Inc. $$$

Rockmart, GA  |  678-885-0929

Miura Boiler Co., Ltd. has been manufacturing, designing, engineering and servicing gas, oil, coal, wood, solid waste, biomass & hybrid fuel-fired steam & gas and condensing since our inception. With installations across all industries worldwide, We are recognized for the highest code standards, innovative engineering and design, Energy Star rating, fully Integrated controls, and renewable, sustainable solutions for green building design and operational efficiency. To find out more, call today!

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Miura Boiler Co., Ltd. $$$

Clear Brook, VA  |  800-872-7562

We are dedicated to providing a better customer service experience for all of our clients! We are a manufacturer of packaged modular fire tube boilers. Applications include space heating, domestic portable hot water and combination space heat with domestic hot water. Sioux Corporation also manufactures low-pressure steam boilers. For more information on us, give us a call today!

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Reimers Electra Steam, Inc. $$$

Philadelphia, PA  |  215-535-8900

Velocity Boiler Works is a distributor of boilers for both commercial and residential furnaces and water heaters. Our innovative hydronic heating solutions are compatible with oil, LP, or natural gas.

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Velocity Boiler Works $$$
placeholder image Unilux Advanced Manufacturing, LLC Fulton Nationwide Boiler Inc. Miura Boiler Co., Ltd. Reimers Electra Steam, Inc. Velocity Boiler Works

Classification of High-Pressure Boilers

Modern high-pressure boilers can be classified according to the numerous categories below.

Types of High-Pressure Boilers

  • Lamont Boilers
  • Benson Boilers
  • Loeffler Boilers
  • Schmidt-Hartmann Boilers
  • Velox Boilers
  • Super Critical Boilers
  • Waste Heat Recovery Boilers

High-pressure boilers can be divided into natural, forced, and once-through boilers. We look at some of these high-pressure boiler types below.

Lamont Boilers

This boiler uses forced circulation to operate. The drum receives feed water, the water in the drum is pumped to the evaporator portion, and the water and vapor are then returned to the drum. After being transported to the superheater, the steam in the drum is fed to the prime mover. Compared to standard water tube boilers, La Mont's initial designs proved lighter, safer, and capable of higher heat transfer rates and evaporation per square foot. They also demonstrated that the circulation of vaporized water at a differential pressure of 2.5 bar was 8 to 10 times greater.

Lamont Boiler

Benson Boilers

When operating at part-load below 60° MCR, a Benson boiler, a type of once-through boiler that Marc Benson invented and patented in Germany in 1923, incorporates recirculation features. Small diameter tubes with a bore of about 25 mm are typically used in Benson boilers to create the furnace envelope. High subcritical or supercritical pressure feed water enters the furnace's bottom and is evaporated to high quality in the spiral section.

Before the steam/water mixture is supplied to the open boiler pass, a balancing header is frequently placed near the top of the furnace to eliminate any changes in steam quality caused by variances in heat absorption in different parallel spiral circuits. It undergoes superheating in pendant tube banks after superheating in the furnace envelope's upper portions. The balancing header separates the extra liquid when the furnace flow rate exceeds the total boiler demand for steam at low loads. The flue gases are used in fossil fuel-fired boilers for reheating, economizing, and air-heating purposes.

Benson Boiler

Waste Heat Recovery Boilers

Waste heat recovery boilers convert heat from industrial furnaces, refuse incinerators, and industrial waste into usable and efficient thermal energy. As a result, the waste heat recovery boiler is improving thermal efficiency, saving energy, and protecting the environment in industrial civilization.

This waste heat is produced from steel, non-ferrous metal, chemicals, cement, and other materials. Waste heat recovery boilers are improving thermal efficiency, saving energy, and protecting the environment in industrial civilization.

Waste Heat Recovery Boiler

Working Principle of High-Pressure Boilers

Water cycles repeatedly from the shell (water drum) to the water tubes and back to the shell before being converted to steam. The water warms up during circulation as it comes into indirect touch with flue gases that conduct heat through tubes.

Circulation ratio is a significant consideration while developing water tube boilers overall. There are two fundamental concepts for water tube boilers based on circulation: Forced circulation and natural circulation boilers.

Natural circulation boilers are the sort of boilers where water circulates spontaneously due to the difference in density. The variation in temperature between cold and hot water causes the density to differ. The circulation ratio is crucial when designing natural circulation boilers to avoid overheating or tube bursts.

In contrast, the water circulation in a forced circulation boiler depends on a secondary pump that is mounted after the feedwater pump (primary pump) and that, depending on the design and safety requirements, either forces up or forces down the circulation ratio.

Applications of High-Pressure Boilers

  • The expansion of steam in a steam turbine or engine can produce mechanical or electrical power.
  • Heating: In cold climates, steam can heat residential and commercial buildings and create hot water for domestic usage.
  • Industrial processes: The sugar, cement, agriculture, and chemical sectors can utilize steam for industrial processes like sizing and bleaching in the textile industry.

Advantages of High-Pressure Boilers

  • The utilization of several small-diameter tubes effectively utilizes the heat of combustion.
  • Powertherm boilers have a parallel set of tubes to prevent significant resistance to water flow.
  • Typically, the components of steam boilers are arranged horizontally for greater accessibility and operating comfort.
  • The risk of warming is decreased because the elements are heated evenly. As a result, the thermal stress disadvantage is also minimized.
  • The rapid water flow through the boiler tubes eliminates the propensity for scale formation.
  • Boilers that operate at high pressures can run on liquid or gaseous fuels.

Disadvantages of High-Pressure Boilers

  • The tubes may become overheated if there is not enough water flow.
  • The interior surfaces of the tube are where bubbles form, slowing down the heat transfer rate.

High Pressure Boilers Informational Video

 

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