Partition plate type dust-falling, temperature-adjusting and pressure-stabilizing flue gas pretreatment device and application process

A pretreatment device and clapboard-type technology, applied in the direction of waste heat treatment, furnace control device, furnace, etc., can solve the problems of reducing the amount of desulfurization and denitrification hazardous waste, flue gas system pressure fluctuations, increasing the intermixing of cold air, etc., to achieve reduction The effect of desulfurization and denitrification hazardous waste, increasing system stability, and reducing the load of the main fan

Active Publication Date: 2022-02-01
MAANSHAN IRON AND STEEL COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the disadvantages of the existing large-scale sintering and pellet production, the pressure fluctuation and temperature fluctuation of the production flue gas system are not conducive to the stable operation of desulfurization and denitrification, the present invention provides a clapboard-type dust-reducing temperature-regulating and stabilizing flue gas The pretreatment device and application process, the pre

Method used

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  • Partition plate type dust-falling, temperature-adjusting and pressure-stabilizing flue gas pretreatment device and application process
  • Partition plate type dust-falling, temperature-adjusting and pressure-stabilizing flue gas pretreatment device and application process
  • Partition plate type dust-falling, temperature-adjusting and pressure-stabilizing flue gas pretreatment device and application process

Examples

Experimental program
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Effect test

Example Embodiment

[0037] Example 1

[0038] like figure 1 As shown in the figure, a partition-type dust-reducing, temperature-regulating, and stabilizing flue gas pretreatment device of this embodiment includes a dust-reducing, stabilizing, and temperature-regulating box 11 and a flue gas input pipe 1 that is open and fixedly connected to the box walls on both sides of the box. and the flue gas output pipe 7, and also includes a particle dust collecting hopper 12 connected to the bottom of the dust suppression and temperature regulation box 11; Two inner hollow self-flow air heat exchange baffles 3, close to and facing the upper end of the self-flow air heat exchange baffle 3 of the flue gas input pipe 1 reserve a flue gas channel, close to and face the self-flow air of the flue gas output pipe 7 A flue gas channel is reserved at the bottom end of the heat exchange partition 3, which allows the production of crude flue gas to flow in an inverted "S" shape in the dust-reducing, pressure-stabili...

Example Embodiment

[0043] Example 2

[0044] The baffle-type dust-reducing, temperature-regulating, and stabilizing flue gas pretreatment device of the present embodiment is basically the same as that of Embodiment 1. Further, the self-flow air heat exchange baffles 3 are distributed at equal intervals in the dust-reducing, stabilizing, and temperature-regulating box. The whole heat exchange process is evenly handed over, avoiding the violent exchange process, further avoiding the strong disturbance of the flue gas by the cold air, and stabilizing the pressure of the flue gas conveying pipeline. like figure 2 As shown, an adjustable damper 24 is installed on the nozzle of the air intake pipe 23, and the size of the damper can be adjusted according to the temperature of the produced rough flue gas, thereby adjusting the amount of cold air mixed with each other. The damper 24 includes a louver 241 and an electric push rod 242. The louver 241 is evenly distributed from top to bottom. One end of t...

Example Embodiment

[0046] Example 3

[0047] The basic structure of a baffle-type dust-reducing, temperature-regulating, and stabilizing flue gas pretreatment device of the present embodiment is the same as that of the above-mentioned embodiment. Figure 4 As shown in the figure, a “W”-shaped deflector 26 is connected between the front inner wall and the rear inner wall of the self-flow air heat exchange baffle 3, which can prevent the atmosphere from generating circuitous disturbances in the dust suppression and temperature regulation box, and improve the atmospheric pressure. At the same time, it acts as a reinforcing rib, which enhances the mechanical strength of the dust suppression and temperature regulation box. like image 3 As shown, the front outer wall and the rear outer wall of the self-flow air heat exchange baffle 3 are connected with heat exchange fins 25 to increase the heat exchange area for the indirect mixing of cold air in the production of rough flue gas and dust reduction a...

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Abstract

The invention discloses a partition plate type dust-falling, temperature-adjusting and pressure-stabilizing flue gas pretreatment device and an application process, which belong to the field of metallurgical green production. The device comprises a dust-falling pressure-stabilizing temperature-adjusting box body, and a flue gas input pipe and a flue gas output pipe which are respectively provided with openings in two side box walls and are fixedly connected, and further comprises a particle dust collecting hopper which is connected to the bottom of the dust-falling pressure-stabilizing temperature-adjusting box body. Two hollow self-flowing type air heat exchange partition plates which are alternately distributed up and down are vertically and fixedly connected in the dust-falling, pressure-stabilizing and temperature-adjusting box body, a flue gas channel is reserved at the upper end of the self-flowing type air heat exchange partition plate close to and facing the flue gas input pipe, and a flue gas channel is reserved at the bottom end of the self-flowing type air heat exchange partition plate close to and facing the flue gas output pipe; the production coarse flue gas can flow in an inverted S shape in the dust-falling, pressure-stabilizing and temperature-adjusting box body, and the heat exchange distance between the production coarse flue gas and cold air indirectly mixed in the dust-falling, pressure-stabilizing and temperature-adjusting box body is increased. The pressure stability of the whole production system is guaranteed in large-scale sintering and pellet production.

Description

technical field [0001] The invention relates to the technical field of metallurgical green production, and more specifically, to a clapboard-type dust-reducing, temperature-regulating, and pressure-stabilizing flue gas pretreatment device and an application process. Background technique [0002] In today's large-scale sintering and pellet production, the exhaust combustion production process is usually adopted, and the flue gas produced by the production combustion contains a large amount of metals, metal oxides, and incompletely burned fuel dust particles; and hydrogen chloride (HCL) produced by combustion , sulfur oxides (SOX), nitrogen oxides (NOX), etc.; the highest flue gas temperature is about 450°C, and the lowest is about 80°C; various fluctuations in the production process are manifested as pressure fluctuations and temperature fluctuations in the production flue gas system. [0003] With the continuous upgrading of green production standards, the new national stand...

Claims

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Application Information

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IPC IPC(8): F27D17/00F27D19/00
CPCF27D17/001F27D17/008F27D19/00F27D2019/0028
Inventor 廖海欧徐兆春
Owner MAANSHAN IRON AND STEEL COMPANY
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