Power Generation - Clyde Bergemann (cbpg)

Power Generation

Furnace

The furnace is responsible for about 50 % of the total heat transfer of a boiler. However, the high temperatures and variations in fuel types may often lead to heavy deposits (slagging) on the furnace walls.

This may lead to reduction in overall steam generator efficiency, clinker formations that may fall down after reaching a significant size (causing damage to the hopper area of the furnace) and corrosion on the heat transfer surfaces.

Clyde Bergemann offers state-of-the-art products for furnace cleaning and the right solution for each of these situations.

The SMART Cannon represents the most advanced furnace cleaning technology available. Due to its specially developed control technology and precise positioning linear drive, the water jet creates a meander shaped pattern on the side and opposite wall, thereby ensuring timely and targeted cleaning.

The conventional and well-known technology for cleaning the membrane wall heating surfaces are VS-H Wall Blowers, which remove slagging with the cleaning medium steam, or the F149 Wall Blower, which uses water as the cleaning medium to remove heavy slagging/fouling.

Wall Blowers using water as the cleaning medium to remove heavy slagging/fouling

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Wall Blowers: SMART Cannon, VS-H, F149

The superheater/reheater is often affected by unevenly distributed deposits on the surfaces. They reduce the efficiency of the boiler and lead to unplanned shutdowns. The flue gas temperatures of up to 1,500 °C may lead to slagging and make cleaning the affected areas even more difficult.

The Oscillating sootblower cleaning specific boiler segments

Clyde Bergemann has various Retractable Sootblowers in its portfolio, which are generally based on the principle that a lance tube with opposite high performance nozzles is helically moved into the flue gas path.

For a travel distance of up to 12 metres, we recommend our PS-H and PX-H sootblowers. For longer travel distances (12 metres and more), the RSG-H or RXC-H sootblowers are used.

The SMART RSG is the most flexible on-load cleaning system to achieve the best cleaning results in the superheater/reheater based on a unique dual motor design for independent and variable traversing and rotational speed.

CBPG_Products_BE_Power_Superheater_Reheater Tab_SMART RS_1

The Part-Retractable Sootblower will be used in superheater/ reheater areas where the flue gas temperatures are up to 800 degrees. The blowing tube of the part retractable sootblower is equipped with high-performance nozzles over the whole length and is movably supported in the flue gas path.

The PS-HB sootblower is used for a travel up to 6 metres and the RSG-HB for travel up to 8 metres.

The Oscillating Sootblower is designed for the selected cleaning of specific boiler segments with heavy fouling and is available in retractable as well as part-retractable execution.

The Retractable Oscillating Sootblower PS-P and RSG-P have blowing tubes with two high-performance nozzles, which are oscillating.

The Part-Retractable Oscillating Sootblowers PS-PB and RSG-PB are equipped with high performance nozzles over the whole length and are movably supported in the flue gas path.

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Retractable Sootblowers: PS-H, PX-H, RSG-H, RXC-H, SMART RSG

Part-Retractable Sootblowers: PS-HB, RSG-HB

Oscillating Sootblowers: PS-P, RSG-P, PS-PB, RSG-PB

Economisers reduce energy consumption during the combustion process. But in economisers, fouling can lead to a high gas outlet temperature and thus, result in lower heat transfer efficiency.

Clyde Bergemann has several types of Sootblowers available for cleaning economisers.

The Part-Retractable Sootblower is commonly used in economisers where the flue gas temperatures could be up to 650 °C, the upper limit of which may vary based on type of application. The blowing tube of the Part-Retractable Sootblower is equipped with high-performance nozzles over the whole length and is supported in the flue gas path.

The PS-HB Sootblower is used for travel up to 6 metres and the RSG-HB for travel up to 8 metres.

The Oscillating Sootblower is designed for the selected cleaning of specific boiler segments with heavy fouling and is available in retractable as well as part-retractable execution.

The Retractable Oscillating Sootblowers PS-P and RSG-P have blowing tubes with two high-performance nozzles, which are oscillating.

The Part-Retractable Oscillating Sootblowers PS-PB and RSG-PB are equipped with high-performance nozzles over the whole length, supported in the flue gas path.

The Rake Sootblower is designed for the cleaning of economisers at flue gas temperatures up to 650 °C. The blowing rake is equipped with high-performance nozzles and the blowing element remains in the flue gas path.

The PS-AR Rake Sootblower is used for travel up to 5.5 metres and the RSG-AR for travel up to 8 metres.

The DB Rotating Element Sootblower is also designed to clean economiser surfaces, as well as heat exchangers with light fouling and flue gas temperatures < 500 °C. The blowing tube is equipped with nozzles over the whole length and rotates in the flue gas path without any axial movement.

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Part-Retractable Sootblowers: PS-HB, RSG-HB

Oscillating Sootblowers: PS-P, RSG-P, PS-PB, RSG-PB

Rake Sootblowers: PS-AR, RSG-AR

Rotating Element Sootblower: DB

Severe fouling on Air Preheaters can reduce a units power output. Blockages between elements may occur, leading to a pressure drop between the cold and hot sides. Air Preheater fires can start near the cold end which is fouled with unburned combustible material.

Clyde Bergemann has several types of Sootblowers for cleaning Air Preheaters.

The Rake Sootblower is designed typically for the cleaning of economisers at flue gas temperatures < 500 °C. The blowing rake is equipped with high-performance nozzles where the blowing element remains in the flue gas path.

The PS-AR Rake Sooblower is used for travel up to 5.5 metres, the RSG-AR for travels up to 8 metres.

For cleaning of Air Preheaters with steam, air and water, PS-A Multi-Media is used. The water and steam/air blowing elements are axially moved into the flue gas path. Depending on the Air Preheater design, the tubes are either fully or partly retractable.

PS-A Multi-Media is used for cleaning of Gas-Gas Preheaters

The SMART Jet is the most advanced cleaning device for rotary Air Preheaters and Gas Reheaters. The SMART Jet moves across the heater in steps, timed to match one or more rotations of the element assembly, to ensure full and even cleaning.

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Rake Sootblowers: PS-AR, RSG-AR

Multi-Media Sootblowers: PSA- Multi-Media, SMART Jet

Depending on the location of the Gas-Gas Heaters, severity of plugging/fouling can vary from medium to heavy. Cleaning of the heater elements is essential to ensure effective heat transfer between flue gas and heater elements.

Clyde Bergemann has several types of Sootblowers for cleaning Gas-Gas Heaters.

The Part-Retractable Sootblower may be used for cleaning Gas-Gas Heaters. The blowing tube of the part retractable sootblower is equipped with high-performance nozzles over the whole length and is movably supported in the flue gas path.

The PS-HB sootblower is used for a travel up to 6 metres and the RSG-HB for travels up to 8 metres.

The Rake Sootblower is designed for the cleaning of economisers at flue gas temperatures < 500 °C. The blowing rake is equipped with high-performance nozzles and the blowing element remains in the flue gas path.

The PS-AR Sootblower is used for travels up to 5.5 metres, the RSG-AR for travels up to 8 metres.

For cleaning of Gas-Gas Preheaters with steam, air and water, PS-A Multi-Media is used. The water and steam/air blowing elements are axially moved into the flue gas path. Depending on the heater design, the tube are either fully or partly retractable.

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Part-Retractable Sootblowers: PS-HB, RSG-HB

Rake Sootblowers: PS-AR, RSG-AR

Multi-Media Sootblowers: PS-A Multi-Media, SMART Jet

Nitrogen oxides (NOx) are one of the prime pollutants emitted during the combustion process. A selective catalyst reduction (SCR) system is designed to reduce NOx emissions by addition of a catalyst and ammonia. The reactor surfaces of the SCR are essentially catalytic packages which may be blocked by the ash-laden flue gases. Blockage of these catalytic packages by so-called “pop-corn ash“ may result in decreased catalytic conversion and cause higher emissions.

Clyde Bergemann has several types of Sootblowers for cleaning these catalytic packages.

A selective catalyst reduction (SCR) system in boiler

The Rake Sootblower is the most suitable solution for the cleaning SCR catalysts. The blowing rake is equipped with high-performance nozzles, where the blowing element remains in the flue gas path.

The PS-AR Sootblower is used for travel up to 5.5 metres, the RSG-AR for travels up to 8 metres.

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Rake Sootblowers: PS-AR, RSG-AR

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