Small wood incinerator

Abstract

This invention provides a small-scale incinerator for the disposal of dead trees and branches, and for the suppression of fire and pest infestations. [Solution] A small wood incinerator having a cylindrical side wall with an air intake 10 at the bottom, configured such that air flowing in from the air intake rises along the side of the side wall to air-cool the furnace wall, and further having a stone plate 3 as a heat-resistant plate, the air diffracts inward at the top of the small wood incinerator to supply oxygen to the top of the stone plate, and the incineration radiant heat is reflected by the side wall, so that a high-temperature furnace core is formed on the top of the stone plate, thereby creating a structure that promotes rapid short-term heat convection.

Description

Background Art

[0001] It is also used as a heating fuel for a field burning stove in agricultural land and vacant land for preventing the breeding of pests and diseases on pruned trees and dead trees in fruit tree cultivation and miscellaneous forest management, and the incineration ash is also used as a fertilizer. Regarding the incineration of wood materials generated along with fruit tree cultivation, since the amount generated is small and the risk of air pollution by incineration is also small, it is not subject to regulation by local governments and is carried out as an essential matter in the cultivation of citrus fruits. Incineration is an effective method of oxidizing and detoxifying harmful substances, and the higher the temperature of incineration, the greater the effect. In the case of field burning, a low-temperature incineration part occurs, and even for materials with little generation of harmful substances by incineration, an insufficient part of incineration oxidative decomposition remains. Therefore, a simple incineration facility with a certain function is provided to reduce the release of harmful substances into the environment.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Regarding the operation of a fruit orchard, dead trees and dead branches discharged, the disposal of dead trees and dead branches associated with the management of forests and miscellaneous forests, which are expanding in recent years, and the occurrence of fires and pests and diseases are suppressed. Means for Solving the Invention

[0005] Regarding a simple incineration facility with a small-scale but incineration capacity, since it is small-scale in creating the incineration facility, materials are easy to obtain. The object to be incinerated is dried with trees due to agriculture, so the incineration ash can be disposed of on agricultural land. There is a water supply environment in the vicinity. The product substances generated by incineration are limited to dead wood that is not harmful. Since it is a simple incinerator, there is no pollution control equipment such as a dust collector, so it has a structure that can incinerate at a high temperature and can withstand high temperatures. These are means for operating a simple incinerator. Effects of the Invention

[0006] This solution addresses one of the obstacles in citrus fruit tree cultivation: the disposal of dead trees and pruned branches. Dead trees can be a breeding ground for pests and are highly likely to already be infested with microorganisms. Dead trees and branches accumulated in woodlands adjacent to orchards do not decompose quickly and can become a source of fire spread. The solution could involve burning pruned trees from gardens, or in emergencies, using them for rubble disposal or as a stove or fireplace. The best form for solving this problem is...

[0007] The method of incineration should not release harmful substances into the environment; waste should be separated and enclosed at the same site; incineration should be carried out with high heat for a short period of time; and the incinerated material should be dried and incinerated in appropriate sizes. Sufficient water should be secured to extinguish the fire, and there should be no houses downwind. Incineration after rain is preferable. Starting incineration at the beginning of rain is the best timing because the rain and terrain separate the minute particles generated by incineration. Incineration should be carried out at a high temperature that does not emit smoke.

[0008] The installation site is a mixed-use plot adjacent to an orchard, with a water tank that is used as a temporary parking space. The surrounding area is covered with citrus orchards, and there are no houses on the downwind side. The irrigation water tank has a capacity of 20 tons and is equipped with two electric pumps, two 2-ton poly tanks for intermediate water supply storage, and a power pump. The site is an empty space in the existing irrigation facility and has been used several times a year for burning dead trees. This particular plot of land has been used for sorting and drying dead trees and pruned branches. For the base, a circular excavation with a diameter of 130 cm and a depth of 20 cm was made, and concrete blocks were installed. The formwork was made of steel plates and installed using stakes and wire at a height of 50 cm from the bottom of the excavation and a width of 30 cm from the ground surface. Concrete was poured using an equal mix of crushed stone and cement. One end of a drum can was cut to 30 cm x 30 cm and placed face down on a concrete base, and firebricks were stacked in front of the drum can. After drying, firing is performed to create cracks in any defective areas. After cooling and cleaning, deformed reinforcing bars and wire rope are arranged around the cylindrical brick at 5 cm intervals to form a cylindrical shape. A circular formwork is installed with steel plates 10 cm away from the cylindrical brick and secured with wood and wire rope, and mortar is poured in three stages. A groove is made at the top so that a drum for the chimney can be inserted into the top. The combustion air intake and ash outlet are 30 cm wide and 30 cm high. An excavation of 80 cm wide x 90 cm long x 20 cm deep is made adjacent to the outside, and a side wall of 15 cm wide concrete is laid and the bottom is poured to serve as an intermediate temporary storage area for incinerated ash. The connection to the furnace body is sloped between the top of the side wall and the bottom height. Mortar and counter bricks are formed around the bottom of the cylindrical furnace body to form a shape of 5 cm thick and 30 cm high, and a support base for the fire grate is installed. The support part is cut to allow for replacement. The grate is made by filling steel pipes with mortar and inserting reinforcing bars. A grating cover is placed on top, and a circular fire-resistant stone slab is placed on top of that, positioned so that the upper part becomes hot. Air is supplied and incinerated ash falls below the grate into the circular area between the stone slab and the furnace wall. The grate is isolated from the hot part so that the incineration flame does not reach it. It has an air-cooling air convection function. Air flowing along the inner surface of the furnace wall supplies oxygen and cools the furnace wall. The incoming air diffracts inward at the top of the stone slab, supplying oxygen to the top of the stone slab. The incineration radiant heat is reflected by the cylindrical side walls and concentrates directly above the stone slab, forming a hot furnace core.Incinerated ash accumulates on the stone slab and falls from the edges of the slab towards the air intake below. The ash that accumulates at the bottom of the furnace is discharged to an intermediate storage area, so to prevent it from scattering, it is placed in a damp bag and used for soil preparation in orchards and as a small amount of fertilizer. [Brief explanation of the drawing] [Figure 1] Plan and cross-sectional views of a simple incinerator

Claims

1. Heat reflection and concentration and furnace body cooling structure

2. Grid arrangement

3. Shape of the three-layer furnace wall

Images