JPS5926208B2 - Dust collector with direct flame deodorizing device - Google Patents

Description

[Detailed Description of the Invention] Normally, most municipal garbage incinerators stop operating at night, but in reality, the incinerator is not completely extinguished, but embers remain, and a considerable amount of garbage continues to smolder. The reality is that there are.

As a result, a small amount of exhaust gas is discharged, and the exhaust gas from this furnace is not only cold and contains acid gases, but also contains significant decomposition products, including resins.

On the other hand, electrostatic precipitators and mechanical precipitators that remove dust from exhaust gas have difficulty collecting dust that tends to stick due to the influence of these resins or discharged products during normal operation. In order to avoid corrosion of the casing etc. due to low-temperature gas, it is common to stop the operation of the dust collector and bypass the exhaust gas to discharge it. Therefore, the dust-containing gas is directly dissipated into the atmosphere, causing pollution. This was a problem from a prevention standpoint.

In addition, since the combustion temperature of a smoldering furnace is low and it is not possible to decompose bad odors, it is not desirable from the viewpoint of pollution prevention to emit bad odors from garbage and release them directly into the atmosphere.

The present invention solves these problems by installing a belly-mounted deodorizing device in front of the electrostatic precipitator, and when the incinerator is not operating at night, the belly-mounting deodorizing device is operated and exhaust gas from the incinerator is fed to it. Here, the exhaust gas containing resin and decomposition products generated from the incinerator is incinerated at a high temperature of 800°C or higher and then sent to the dust collector, making the exhaust gas odorless and reducing the amount of resin in the dust collector. This solves the problem of dust sticking and makes it possible to collect dust at night when the incinerator is not operating, which is more effective from the standpoint of pollution prevention.

Furthermore, the belly-mounted deodorizing device installed in front lowers the outlet gas temperature to approximately 300℃.
Since the temperature can be easily controlled at 10°C, the inside of the electrostatic precipitator can be maintained at a temperature that allows charging even when the incinerator is shut down at night, making it easy to charge the electrostatic precipitator early and solving the problem of low-temperature corrosion.

Next, the present invention will be explained in detail with reference to the figures.

The figure shows a dust collector according to the present invention, where 1 is an incinerator, 2 is an incinerator, and 2 is an incinerator.
3 is a cooling tower, 3 is a belly-mounted deodorizing device, 4 is a heat exchanger, 5 is an electric precipitator, 6 is a high-pressure insulator chamber, 7 is a damper, 8 is a fan, 9 is a chimney, and municipal waste is in an incinerator. 1, the exhaust gas is cooled by history in a cooling tower 2, guided through a flue 10, and after the contained dust is removed by an electrostatic precipitator 5, it is released into the atmosphere from a chimney 9.

The electrostatic precipitator 5 has a belly-type deodorizing device 3 installed in front of it, and at night the incinerator 1 stops operating and the exhaust gas passes through the flue 11 to the belly-type deodorizer by operating three dampers 7 as switching means. After being burned, deodorized and heated in the deodorizing device 3, the electrostatic precipitator 5
The dust is removed from the air, and the air is emitted from the chimney 9.

4 is a heat exchanger attached to the deodorizing device 3, which uses the heat of the deodorizing device to heat the circulating air, and the heated air is transferred to a heating chamber 10 formed by making the dust collector 5 double-bottomed.
guided to heat the electrostatic precipitator to prevent low-temperature corrosion.

The heated air is also circulated to the high-pressure insulator chamber 6 of the electrostatic precipitator to maintain a constant temperature in the insulator chamber and prevent damage to the insulator due to thermal distortion.

As described above, according to the present invention, since the belly-mounted deodorizing device is installed in front of the dust collector, the dust collector can be operated even when the incinerator is not operating at night, which is extremely advantageous in terms of pollution prevention.

[Brief explanation of the drawing]

The figure is a system diagram showing one embodiment of the present invention, and the reference numerals of the main parts of the present invention in the figure are as follows. 1...Incinerator, 2...Cooling tower, 3...
... Belly-type deodorizing device, 4 ... Heat exchanger, 5
...Electric dust collector, 6...High pressure insulator chamber,
7...Damper, 8...Fan, 9.
...Chimney, 10... Flue, 11...
... Flue.

Claims (1)

[Scope of Claims] 1. A dust collector that introduces exhaust gas from an incinerator and removes dust contained therein, a belly-mounted deodorizing device that introduces the exhaust gas, deodorizes it, and sends it to the dust collector, and the incinerator is in operation. A dust collector having a belly-mounted deodorizing device, comprising a switching means for sending exhaust gas directly to the dust collector and introducing the exhaust gas into the dust collector via the belly-mounting deodorizing device when the exhaust gas is stopped. 2. A dust collector that introduces exhaust gas from the incinerator and removes the dust contained therein; a belly-mounted deodorizer that introduces the exhaust gas, deodorizes it, and sends it to the dust collector; and when the incinerator is in operation, the exhaust gas is directly sent to the dust collector. It consists of a switching means for introducing the dust collector through the belly-type deodorizing device during feeding and stopping, and a heat exchanger that is attached to the belly-type deodorizer and heats a heating chamber provided in the dust collector. A dust collector having a belly-mounted deodorizing device.