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Sealed hot blast cover device

A hot air cover and sealing brush technology, which is applied in engine sealing, waste heat treatment, lighting and heating equipment, etc., can solve the problems of staff and environmental hazards, and achieve the effects of ensuring safe operation, speeding up the exhaust sintering process, and long life

Active Publication Date: 2015-11-18
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the circulating flue gas leaks out, it will cause great harm to the staff and the environment

Method used

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  • Sealed hot blast cover device
  • Sealed hot blast cover device
  • Sealed hot blast cover device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: A kind of sealing hot air cover device

[0045] Such as figure 1 and figure 2 As shown in the schematic diagram of the sealed hot air hood device in the embodiment of the present invention, the gas hood 1 is installed on the part of the sintering machine that uses the circulating flue gas to cover the sintering machine, and several circulating air intake pipes are arranged on the top of the fume hood 1 2. A cut-off valve 3 is installed on the circulating air intake pipe 2, and a rectifier 11 is built in the circulating air intake pipe 2, and the opening of the rectifier 11 is expanded; Mid-fill thermal insulation mineral wool;

[0046] Emergency ventilation holes 4 are arranged on both sides of the fume hood 1, and electric valves 5 are installed on the emergency ventilation holes 4;

[0047] Sealing brush strips 6 are installed in the gap between the front and rear end faces of the fume hood 1 and the bed surface of the sintered material layer 10; 8 ...

Embodiment 2

[0057] Adopt the device described in embodiment 1, cover fume cover 1 on the sintering machine, carry out sintering, concrete operation process is as follows:

[0058] Open the circulating flue gas inlet pipe 2, feed the circulating flue gas, and monitor the pressure gauge 12 and the oxygen level gauge 13 online to ensure that the pressure in the hot air hood 1 is negative and the oxygen concentration is 20%. move forward;

[0059] If the pressure of the pressure gauge 12 turns to a positive value, close the shut-off valve 3 of the circulating flue gas inlet pipe 2, open the electric valve 5 on the corresponding emergency vent hole 4, and enable the normal sintering mode; if the pressure of the pressure gauge 12 is normal, the oxygen level concentration is 15%, open the electric valve 5 on the corresponding emergency ventilation hole 4, add air, and continue hot blast sintering.

[0060] The sealed hot air cover device ensures that the oxygen concentration in the hot air cove...

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Abstract

The invention relates to a sealed hot blast cover device and application thereof. The sealed hot blast cover device comprises a smoke hood (1) which is mounted at a circulating smoke using part of a sintering machine; the sintering machine is covered by the smoke hood (1); a circulating air charging pipe (2) is arranged at the top of the smoke hood (1); a stop valve (3) is mounted on the circulating air charging pipe (2); emergency air vents (4) are formed in the two sides of the smoke hood (1); electric valves (5) are mounted on the emergency air vents (4); clearances between the front and rear end faces of the smoke hood (1) and a bed surface of a sintering material layer (10) are sealed. The sealed hot blast cover device disclosed by the invention can be used for remarkably reducing normal-temperature air leaked into the smoke hood, guaranteeing the circulation effect of sintering smoke and also increasing the uniformity degree of the circulating smoke in the smoke hood.

Description

technical field [0001] The invention belongs to the technical field of sintering production in the metallurgical industry, and in particular relates to a sealed hot air hood device. Background technique [0002] The sintering flue gas circulation technology is to extract the flue gas from the air box of the main flue of the sintering machine. After dust removal, it is mixed with the flue gas drawn from the sintering cooler into the mixer to form mixed hot flue gas, and then the mixed hot flue gas is sent to The surface of the material layer of the sintering machine is sintered circularly, so as to realize the energy saving and emission reduction of the sintering process. The process mechanism is to use the physical heat of the hot flue gas of the sintering machine to replace part of the combustion heat of the solid fuel, so the energy consumption of the sintering process will be significantly reduced. At the same time, the sintering flue gas passes through the sintering mat...

Claims

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Application Information

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IPC IPC(8): F27B21/08F27D17/00F16J15/16F16J15/40
Inventor 朱廷钰徐文青万斌
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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