Dust deposition removing method and system

A technology for removing system and fouling, which is applied in combustion methods, removing solid residues, cleaning heat transfer devices, etc., can solve the problems of inability to remove fouling in vertical tube bundles, poor fouling removal ability, and low impact force, etc. Good soot blowing effect, simple structure, and the effect of increasing impact kinetic energy

Inactive Publication Date: 2012-01-11
BEIJING JIAOTONG UNIV
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Problems solved by technology

However, in practical applications, due to factors such as the relatively low falling height of the steel balls and the small distance between the tube rows on the heating surface, this method has the disadvantages of soot blowing dead angle, low impact force, and poor ash removal ability. , the device cannot remove the ash on the surface of the vertical tube bundle, such as the ash on the surface of the vertical superheater tube bundle

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  • Dust deposition removing method and system
  • Dust deposition removing method and system
  • Dust deposition removing method and system

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Embodiment Construction

[0051] Referring to the accompanying drawings and with the help of embodiments of the present invention, the technical solution of the present invention will be described in detail by taking the ash layer on the heating surface of the boiler as a use example. It should be understood that the components shown in the drawings are schematic and not restrictive, and the features are not drawn to scale. In the respective device drawings, the same reference numerals denote the same components.

[0052] Such as figure 1 As shown, the present invention provides a method for removing soot deposits, comprising: step S1, mixing gas and solid particles into a soot blowing medium flow; step S2, blowing the soot blowing medium flow to the soot deposit layer; step S3. Separating and recovering the solid particles.

[0053] Since a certain amount of solid particles are added to the soot-blowing airflow, the impact kinetic energy on the soot layer is greatly increased. The soot-blowing airfl...

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Abstract

The invention discloses a dust deposition removing method and a system. The method comprises the following steps: gas and solid particles are mixed into dust blowing medium flow; and the dust blowing medium flow is sprayed onto a dust deposition layer. The system comprises a gas transmission device, a particle supply device, a gas and particle mixing device, a particle separation and recycle device and a dust blowing gun. In the method, the dust deposition layer on a heating surface is broken and peeled off through the continuous strike of the solid particles and dust deposition can be removed thoroughly by combining the blowing and sweeping action of air current, in particular to the highly cohesive dust deposition on the surface of the heating surface of a boiler. The dust deposition on the surfaces of a horizontal heating surface and a vertical heating surface can be effectively removed through the system provided by the invention.

Description

technical field [0001] The invention relates to a method and system for removing dust accumulation, belonging to the technical field of energy and environmental protection engineering. More specifically, the present invention relates to a method and system for removing highly cohesive ash deposits on the heating surface of boilers burning inferior fuels with high ash content and low ash melting point. Background technique [0002] With the increasing shortage of traditional energy fuels and the development of environmental protection industry, boilers burning low-quality fuels with high ash content and low ash melting point have developed rapidly, and the problem of ash accumulation on the heating surface of boilers has become more and more prominent. The dust accumulation on the heating surface has a great influence on the safety and economy of boiler operation. During the operation of the boiler, the heat transfer resistance increases due to the ash on the heating area, w...

Claims

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Application Information

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IPC IPC(8): F23J1/00F23J3/00
CPCF28G1/166F23J3/023F28G1/12
Inventor 周岩梅张琼田秀君刘杨毛世慧
Owner BEIJING JIAOTONG UNIV
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