Hot air blowing device of electric dust remover of nickel side-blown converter

Abstract

The utility model discloses a hot air blowing device of an electric dust remover of a nickel side-blown furnace, which comprises an electric dust remover top cathode insulation porcelain bushing heating device and an electric dust remover side cathode vibration insulation porcelain shaft heating device which are used for heating air blown into the electric dust remover. The heating device comprises an axial flow fan, an expansion joint, a heat preservation box, an electric heater, a thermocouple and a square elbow which are sequentially connected. The square elbow is used for being connected with an air supply pipeline. The top cathode insulation porcelain bushing heating device comprises a heating pipe assembly, a top heating valve, a suspension insulation pipe and a porcelain bushing heating nozzle which are connected in sequence, and hot air acts on each top insulation porcelain bushing; the side cathode vibration insulation porcelain shaft heating device comprises a side heating pipe assembly, a side heating valve and a porcelain shaft heating nozzle which are connected in sequence, and hot air acts on each side cathode vibration insulation porcelain shaft.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmental protection dust removal, and in particular relates to a hot air blowing device for an electric dust collector of a nickel side-blowing furnace. Background Art

[0002] Electrostatic precipitators are widely used in the fields of industrial dust control such as metallurgy, building materials, and light industry. They are used to collect dust from high-temperature flue gas generated during the production process, purify the flue gas, and protect the on-site environment. The top of the electrostatic precipitator is equipped with a cathode insulating porcelain sleeve. When the temperature in the top box is lower than the flue gas dew point, especially in the nickel side-blowing smelting system, the raw material composition is relatively complex, the flue gas humidity is high, and the water content is about 18%, the electrostatic precipitator insulating porcelain sleeve and the cathode vibrator porcelain shaft will condense. When the electrostatic precipitator is turned on, the resistance of the insulating parts is reduced, and the porcelain sleeve will be broken down under high voltage, causing an electric field short circuit, and the electrostatic precipitator cannot work normally. Utility Model Content

[0003] The utility model provides a hot air purge device for the electrostatic precipitator of a nickel side-blowing furnace, which aims to solve the problem that the humidity of the flue gas in the nickel side-blowing smelting system is high, causing the electrostatic precipitator to not work normally. This design adds a heat preservation device to the cathode Zhenda insulating porcelain shaft to reduce the impact of the failure of the insulation parts of the electrostatic precipitator body on normal production.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] A hot air blowing device for an electrostatic precipitator of a nickel side-blowing furnace, comprising a cathode insulating porcelain sleeve heating device at the top of the electrostatic precipitator and a cathode Zhenda insulating porcelain shaft heating device at the side of the electrostatic precipitator, used for heating the air blown into the electrostatic precipitator;

[0006] The heating device comprises an axial flow fan, an expansion joint, a heat preservation box, an electric heater, a thermocouple and a square elbow which are connected in sequence, and the square elbow is used to connect the air supply duct;

[0007] The top cathode insulating porcelain sleeve heating device comprises a heating tube assembly, a top heating valve, a suspended insulating tube, and a porcelain sleeve heating nozzle connected in sequence, and hot air acts on each top insulating porcelain sleeve;

[0008] The side cathode Zhenda insulated porcelain shaft heating device comprises a side heating pipe assembly, a side heating valve and a porcelain shaft heating nozzle which are connected in sequence, and hot air acts on each side cathode Zhenda insulated porcelain shaft.

[0009] The beneficial effects of the utility model are:

[0010] The heating device of each insulating part of the electrostatic precipitator is equipped with a branch valve to achieve one-to-one precise control and heating, which makes efficient use of energy. At the same time, it reduces the failure rate of electric field equipment caused by insulating parts, thereby improving dust removal efficiency and preventing dust collector failure caused by excessive flue gas humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of a hot air blowing device;

[0012] Figure 2 This is a schematic diagram of hot air blowing of the top cathode insulating porcelain sleeve;

[0013] Figure 3 This is a schematic diagram of the hot air purge configuration of the side cathode Zhenda porcelain shaft;

[0014] In the figure: axial flow fan 1, expansion joint 2, insulation box 3, electric heater 4, thermocouple 5, square elbow 6, heating tube assembly 7, top heating valve 8, suspended insulating tube 9, porcelain sleeve heating nozzle 10, top insulating porcelain sleeve 11, side heating tube assembly 12, side heating valve 13, porcelain shaft heating nozzle 14, side cathode vibrator insulating porcelain shaft 15. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0016] like Figure 1 As shown, a hot air blowing device for an electrostatic precipitator of a nickel side-blowing furnace includes a cathode insulating porcelain sleeve heating device at the top of the electrostatic precipitator and a cathode Zhenda insulating porcelain shaft heating device at the side of the electrostatic precipitator, which are used to heat the air blown into the electrostatic precipitator. The heating device includes an axial flow fan 1, an expansion joint 2, an insulation box 3, an electric heater 4, a thermocouple 5 and a square elbow 6 connected in sequence, and the square elbow 6 is used to connect the air supply duct.

[0017] like Figure 2 As shown, the top cathode insulating porcelain sleeve heating device includes a heating tube assembly 7, a top heating valve 8, a suspended insulating tube 9, and a porcelain sleeve heating nozzle 10 connected in sequence, and hot air acts on each top insulating porcelain sleeve 11.

[0018] like Figure 3 As shown, the side cathode Zhenda insulated porcelain shaft heating device includes a side heating tube assembly 12, a side heating valve 13, and a porcelain shaft heating nozzle 14 connected in sequence, and hot air acts on each side cathode Zhenda insulated porcelain shaft 15.

[0019] The top side hot air blowing device is an axial flow fan 1 that blows the hot air heated by the electric heater to the cathode insulating porcelain sleeve and the cathode vibrator insulating porcelain shaft through the heating nozzle so that the temperature of the area can quickly reach above the flue gas dew point temperature, thereby preventing condensation on the outer walls of the cathode insulating porcelain sleeve and the cathode vibrator insulating porcelain shaft, and the electric field can be normally boosted to ensure the normal operation of the electrostatic precipitator.

Claims

1. A hot air blowing device for an electrostatic precipitator of a nickel side-blowing furnace, characterized in that: It includes a cathode insulating porcelain sleeve heating device at the top of the electrostatic precipitator and a cathode Zhenda insulating porcelain shaft heating device at the side of the electrostatic precipitator, which are used to heat the air blown into the electrostatic precipitator; The heating device comprises an axial flow fan, an expansion joint, a heat preservation box, an electric heater, a thermocouple and a square elbow which are connected in sequence, and the square elbow is used to connect the air supply duct; The top cathode insulating porcelain sleeve heating device comprises a heating tube assembly, a top heating valve, a suspended insulating tube, and a porcelain sleeve heating nozzle connected in sequence, and hot air acts on each top insulating porcelain sleeve; The side cathode Zhenda insulated porcelain shaft heating device comprises a side heating pipe assembly, a side heating valve and a porcelain shaft heating nozzle which are connected in sequence, and hot air acts on each side cathode Zhenda insulated porcelain shaft.

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