JPS59210214A - Combustion device - Google Patents

Abstract

PURPOSE:To prevent odor pollution from occurring by absorbingly removing the odor constituents such as aldehydes, ketones and the like, which develop in large quantities at the setting-on and putting-out of fire, by a method wherein water abosrbing substance is arranged in an discharge passage, through which exhaust gas developed at a combustion section flows. CONSTITUTION:The air sucked through supply air ports is mixed with kerosene and burnt at a combustion section. The resultant exhaust gas is past through water absorbing substance 6 and discharged outdoors through exhaust ports 7. At this time, aldehydes, ketones, hydrocarbon, and carbon monoxide are absorbed in the bedewed water of the water absorbing substance 6. Especially, because aldehydes such as formaldehyde, acetaldehyde and the like, which are main causes of odor development, are water-soluble, almost all the aldehydes are absorbed in the water abosrbing substance 6. Furthermore, while conventional catalyst such as manganese oxidation catalyst, platinum or the like does not react on various noxious constituents and odor constituents until a high temperature of at least 300 deg.C is reached, the water absorbing substance 6 effectively absorbs said constituents even at lower temperatures.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion device, and by providing a water-absorbing substance in the exhaust path of exhaust gas generated in the combustion section, aldehydes are generated in large quantities during ignition and extinguishing.

The purpose is to absorb and remove odor components such as ketones and prevent odor pollution.

In general, oil combustion equipment has the problem of generating large amounts of carbon monoxide, hydrocarbons, aldehydes, ketones, etc., as shown in the table below, especially when igniting or extinguishing a fire.

To solve this problem.

2.

Platinum, nickel, silver, copper, vanadium, bismuth, molybdenum, manganese, and silica in the exhaust tract.

Some devices are equipped with an oxidation catalyst using alumina, etc., but the catalytic effect is hardly exhibited due to the low temperature of the catalyst at the time of ignition, and the fact is that the purification efficiency is poor, and odor is a particular problem. It became.

The above table is data for an oil combustion equipment equivalent to 4o00-/h011r. -The values for carbon oxide and hydrocarbon are the peak values at the time of ignition and extinguishing, and the values for formaldehyde and acetaldehyde are the values for 30 seconds after ignition and extinguishing. shows.

3, Ma.

The present invention eliminates these conventional drawbacks, and has a structure in which a water-absorbing substance is provided in the exhaust passage to retain condensed water, and odor components such as aldehydes in the exhaust gas are absorbed and removed by the water. This is what I did. An embodiment thereof will be described below with reference to the drawings.

Exhaust gas generated in a combustion section within a main body 1 of the oil combustion apparatus shown in FIG. 1 is discharged to the outside through a sleeve 3 and an air supply/exhaust pipe 2 that penetrates a wall 4.

Figure 2 shows the supply and exhaust pipe 2, in which the air taken in through the power supply port 5 is mixed with oil and burned in the combustion section, and the resulting exhaust gas passes through the water-absorbing material 6, and is released from the exhaust lower into the room. is discharged. At this time, aldehydes, ketones, and hydrocarbons in the exhaust gas.

- Carbon oxide is absorbed by the condensed water of the water-absorbing material 6. In particular, formaldehyde, which is the main cause of odor,
Aldehydes such as acetaldehyde are easily soluble in water and are mostly absorbed by the water-absorbing substance 6. For this reason, when only manganese-based oxidation catalysts were provided in the exhaust passage, the aldehyde purification efficiency was only 60%, but if this water-absorbing substance 6 was also used downstream of the manganese-based oxidation catalyst,
The purification efficiency increases to 80-90%. Furthermore, if the absorbent material 6 is made of a ceramic with a high porosity or a thin plate-like ceramic, its surface area will increase, so the contact area with the exhaust gas will be sharper, and the absorption rate of various harmful components and odor components will be further improved. . Furthermore, conventional catalysts such as manganese-based oxidation catalysts and platinum do not react with various harmful components and odor components unless the temperature is at a high temperature of 300° C. or higher, but the water-absorbing material 6 absorbs these components well even at low temperatures.

By tilting the air supply and exhaust pipe 2, formaldehyde, acetaldehyde, etc. that have been absorbed by water can flow out of the room along with the condensed water.

Furthermore, the odor components in this dew water gradually evaporate outside the room, but the concentration is so low that it cannot be detected by the human sense of smell, so it does not pose any problem.

In the above embodiment, the water-absorbing substance 6 is provided in the forced supply/exhaust pipe 2 that takes combustion air from the outside and releases the combustion air to the outside. It can be used in other locations as long as it is inside, and the combustion method is not limited to this forced air supply/exhaust method.

Other methods may also be used.

As is clear from the above description, according to the present invention, odor components generated in large quantities during ignition and extinguishing can be effectively removed, and odor pollution will not be caused.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an oil combustion device according to an embodiment of the present invention, FIG. 2 is a sectional view of an air supply and exhaust pipe of the same device, and FIG.
Figure M-] is a cross-sectional view taken along line I'. 1... Oil combustion equipment main body, 2... Supply and exhaust pipe, 5... Air supply port, 6... Water absorbing substance, 7... ·exhaust port. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (2)

[Claims] (1) A combustion device in which a water-absorbing substance is provided in the exhaust path of the exhaust gas generated in the combustion section. (2) The combustion device according to claim 1, wherein the water-absorbing substance is made of ceramic whose main component is at least one of alumina, magnesia, and silica.