Gas supplementing device and ash removing system comprising same

Abstract

The invention provides a gas supplementing device which comprises a gas supplementing pipe (1) and a gas source distribution pipe (2), wherein the gas source distribution pipe (2) is arranged in the gas supplementing pipe (1), and the two ends of the gas source distribution pipe (2) are closed; the two opposite sides of the gas source distribution pipe (2) are provided with a gas inlet (3) and multiple gas source distribution holes (4) respectively; the gas inlet (3) is communicated with the outer part of the gas supplementing pipe (1); the multiple gas source distribution holes (4) are distributed along the axial direction of the gas source distribution pipe (2); and the axes of at least some of the gas source distribution holes (4) are parallel to the axis of the gas inlet (3). In addition, the invention also provides an ash removing system comprising the gas supplementing device. As the gas source distribution holes are distributed along the axial direction of the gas source distribution pipe, annular vortex is not generated, pressure of the gas injected from the gas source distribution holes is relatively uniform, and abrasion of the gas supplementing pipe is reduced, thus the ash leakage of the gas supplementing device is prevented.

Description

technical field [0001] The invention relates to the field of thermal power generation, in particular to an air supply device and an ash removal system comprising the air supply device. Background technique [0002] Shenhua Yili Energy Co., Ltd.’s 4×200MW unit dust removal equipment adopts bag filter equipment, ash hopper ash discharge adopts positive pressure dense phase pneumatic ash removal system, and an air supply device is installed at the outlet of the warehouse pump to flow the ash. chemical treatment to prevent the phenomenon of clogging. Such as figure 1 and figure 2 As shown, the existing air supply device includes an air supply pipe 1 and a wear-resistant bushing 9 fixed in the air supply pipe 1, an annular cavity 12 is formed between the air supply pipe 1 and the wear-resistant bushing 9, and the air supply pipe 1 is provided with The air intake port 10 communicating with the annular cavity 12 is provided with a plurality of small holes 11 on the part of the ...

AI Technical Summary

Problems solved by technology

When the gas flows in the annular cavity 12, an annular vortex is formed, which will continuously wash away the wear-resistant bushing 9 during the flow process, making the shape and diameter of the small hole 11 inconsistent. When the airflow enters the soot blowing pipe, the pressure Both the direction and direction have changed, and the wear of the anti-wear bushing 9 and the air supply pipe 1 has been accelerated, resulting in the frequent ash leakage of the air supply device, polluting the production environment on site, and causing the frequent shutdown of the ash removal system for maintenance, thereby increasing maintenance. The working intensity of personnel affects the normal operation of the ash removal system

In addition, due to the need to frequently replace the air supply device, it increases the cost of use

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