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Fly Ash Conveying-Return Ash Pump

Fly Ash Conveying-Return Ash Pump Overview

The ash return pump is also called fly ash conveying pump. At present, it has been widely used, but the high content of fly ash in boiler operation has attracted much attention. The ash return pump of the boiler fly ash reburning conveying device is mainly used to partially or completely fly fly ash with a high carbon content to the secondary combustion in the left and right hearths of the boiler according to the combustion conditions of the boiler. Fly ash reburning technology can reduce the carbon content of boiler fly ash and improve boiler thermal efficiency. The new energy-saving and environmental protection equipment ash return pump can well solve the problem of high fly ash combustibles, and can also be applied to CFB boilers with high fly ash combustibles, insufficient ash balance in the furnace, or excessively high coal heating value. It has the advantages of simple system, convenient operation, small maintenance, low one-time investment and good economic benefits. It is the most ideal fly ash recombustion equipment for power plants and raw coal manufacturers.

Working principle of fly ash conveying-ash return pump

The ash return pump mainly transfers the fly ash of an electric field with the highest carbon content in the boiler fly ash to the boiler in the dense phase area of the left and right of the boiler. The secondary combustion can use the fly ash recombustion technology to bring the boiler fly ash. The carbon content is reduced by 12%, and the thermal efficiency of the boiler can be increased by about 4%. Under the same combustion conditions, the boiler output can be increased by 2t / h.
The equipment adopts dilute phase ash conveying method. Equipment wear is small, and the ash conveying volume can be adjusted steplessly. Continuous, stable and uniform, using low pressure air as power, the medium is safe and reliable. Due to the pressure in the furnace, the ash conveying devices used in some power plants have poor air-locking performance, resulting in unsatisfactory delivery capacity and frequent pipe blockages. Our company's patented FC ash pump completely overcomes this technical problem and achieves continuous, stable and uniform powder transportation. The working principle of the ash return pump: the material enters the ash return pump, and after fluidization, a better fluid gas material flow layer is formed. The airflow passes through the spray group to form a high-speed airflow, and a negative pressure area is formed in the pump fluidization bin to roll the material After entering the pipeline, the material will be transported to the designated terminal after deceleration and decompression. The ash return pump produced by our factory with independent property rights is a new device to solve this problem. Fly ash is returned to the furnace for reburning, reducing energy consumption and improving production efficiency are the needs of sustainable development of the enterprise. We can help.
Due to the pressure in the furnace, the ash conveying devices used in some power plants have poor air-locking performance, resulting in unsatisfactory delivery capacity and frequent pipe blockages. Our company's patented FC ash pump completely overcomes this technical problem and achieves continuous, stable and uniform powder transportation. The working principle of the ash return pump: the material enters the ash return pump, and after fluidization, a better fluid gas material flow layer is formed. The airflow passes through the spray group to form a high-speed airflow, and a negative pressure area is formed in the pump fluidization bin to roll the material. After entering the pipeline, the material will be transported to the designated terminal after deceleration and decompression. The ash return pump produced by our factory with independent property rights is a new device to solve this problem. Fly ash is returned to the furnace for reburning, reducing energy consumption and improving production efficiency are the needs of sustainable development of the enterprise. We can help.

Technical Parameters

The ash return pump, also called the slag return pump, is generally suitable to be installed at the bottom of the material warehouse. At the same time, ensure that the air pipe is on the horizontal line, and the joints should be sealed to ensure that there is no air leakage. The equipment is safe and reliable in operation, which can ensure continuous, uniform and stable transportation of the dust removal ash, and can adjust the size of the transportation ash, which not only improves the quality of fly ash, saves coal, and increases benefits.
The entire conveying system is composed of Roots blower, ash return pump, air conveying pipeline and other equipment. The Roots blower provides the power source and is conveyed to the furnace through the conveying pipe. The conveying equipment has little wear and tear, and the ash conveyance can be adjusted steplessly. The entire conveying process is continuous, stable and uniform, so as to realize the reburning of fly ash.
model Conveying pipe (mm) Capacity (t / h) Air volume (m 3 / min) Wind pressure (KPa) Power (kw) Conveying length
FC75 108 1-3 3-9 40-98 3-15 30-100
FC100 133 3-7 9-20 40-98 15-45 30-100
FC150 159 7-13 20-36 40-98 45-75 30-100
FC200 219 13-18 36-50 40-98 75-90 30-100

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Pneumatic conveying equipment
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