JPS611911A - Fowl droppings combustion furnace - Google Patents

Abstract

PURPOSE:To achieve complete burning of organic substances which are apt to generate soot and smoke such as fowl dorppings and the like by providing a secondary combustion chamber in the furnace and causing a circulating flow within the same chamber. CONSTITUTION:A secondary combustion chamber 11 is formed between a suspending wall 12 partitioning a flue 7 from a combustion chamber 6 and a furnace wall 6a opposing the suspending wall 12. Secondary combustion air is blown into the secondary combustion chamber 11 from the following two directions. One is directed from a blow-in port 14 formed in a furnace wall 6a opposing the suspending wall 12 toward the suspending wall 12, and another is directed from a blow-in port 15 of a furnace wall 6b on the opposite side of the furnace wall 6a opposing the suspending wall 12 via the lower part of the suspending wall toward the furnace wall 6a of the air blow-out angle at the blow-in ports 14 and 15 is suitably selected, it is possible to control the furnace so that the circulating flow of a gas in the clockwise direction as shown by arrow in the secondary combustion chamber 11 is formed. Thus, by causing the secondary combustion air to flow in a circulating manner, the complete combustion of combustion gas can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion furnace that uses as fuel an organic substance that easily generates soot and smoke, such as chicken dung.

Recently, chicken manure and the like have been used as a heat source, but since the combustion gas contains a lot of medium, attempts have been made to blow secondary combustion air into the combustion furnace to achieve complete combustion. However, in many cases, the combustion gas and the secondary combustion air are mixed poorly, and the effect is not very good.The present invention provides a secondary combustion chamber in the furnace, and two systems blowing air from opposite directions. A device that uses the secondary combustion air flow to create a swirling flow in the same chamber to ensure sufficient mixing of combustion gas and air, and to lengthen its residence time in the furnace (to achieve complete combustion). It is.

Figure 1 shows the skeleton of the longitudinal section of the combustion furnace, where 1 is the furnace body, 2
is the fuel supply port, 3 is the fire bed, 4 is the primary combustion air blow-off pipe, 6
is a combustion chamber, 7 is a flue, and 8 is a water pipe chamber. The combustion gas generated in the combustion chamber 6 enters the water pipe chamber 8 through the flue 7, where it releases heat and is discharged from the chimney 9. In the present invention, a secondary combustion chamber 11 is provided in the furnace as shown in the figure, and complete combustion of the combustion gas is achieved by controlling the secondary combustion air blown into this chamber. Chamber 6 flue 7
and a furnace wall 6α that faces the hanging wall 12.
This is formed between the
Next combustion air is blown in. One is the hanging wall 1 from the inlet 15 of the furnace wall 6b on the opposite side of the furnace wall 6a facing the hanging wall 12.
2 and toward the furnace wall 6a. 17 is 2
A secondary combustion air pipe connects to the same air source as the primary combustion air.

By appropriately selecting the air blowing angles at the air inlets 14 and 15, it is possible to control the flow of gas in the secondary combustion chamber II in a clockwise direction as shown by the arrow in the figure. The secondary combustion air blowing out from the inlet 15 disturbs the combustion gas rising from the fire bed, hits the furnace wall 6a, and rises, and together with the air from the inlet 14, it becomes a swirling flow in the secondary combustion chamber 6a, where the combustion gas Mixed combustion with air and air is sufficient.

This complete combustion gas passes through the base of the hanging wall 12 and passes through the chimney 9.
K J: It is induced to be discharged. In this way, in the present invention, 2
By flowing the secondary combustion air in a swirling manner, complete combustion of the combustion gas can be achieved.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a combustion furnace to which the present invention is applied. ■ Furnace body 2 Fuel supply port 3 fire bed 41st combustion air blow-off pipe 6 Combustion chamber 6 (Z, 6b furnace wall 7 flue 8 Water tube room 112nd combustion chamber 12 Hanging wall 14.15 Secondary combustion air inlet 17 Secondary combustion air pipe

Claims (1)

[Claims] A secondary combustion chamber is provided with a hanging wall that partitions the furnace and the flue, and the secondary combustion air flows from the furnace wall facing the hanging wall toward the hanging wall, and the secondary combustion air passes under the hanging wall to the opposite side of the hanging wall. A combustion furnace in which a swirling flow is caused in the secondary combustion chamber by the secondary combustion air directed toward the furnace wall.