JPH0727311A - Distilling incinerator device - Google Patents

Abstract

PURPOSE:To enable an efficient combustion to be carried out while rapid combustion of organic material is being restricted and controlled by a method wherein an upper part within an incinerator is provided with an air blowing port for forcedly blowing air and a heating part for heating indirectly the incinerator. CONSTITUTION:A feeding port 2 is opened, either powder particle catalysts or adsorption agent containing organic substances is fed and then a secondary combustion furnace is heated in advance. Then, as a heating part 11 of a distilling incinerator is operated, the produced distilled and decomposed gas is guided from a gas discharging port 4 into the,secondary combustion furnace and completely ignited there. An amount of generated distilled and divided gas is controlled through adjustment of temperature at the heating part 11 and a controlling of an amount of air fed from an air blowing port 7 into the furnace Upon completion of the distilling and dividing operation, a temperature at the heating part 11 is increased and a feeding amount of air at the air blowing port 7 is increased and then distilled and divided sludge is ignited together with effect of agitating vanes 8. Ignited material after completion of combustion is cooled and then discharged out of the furnace through a discharging port 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is directed to a used powdery or granular waste catalyst or waste adsorbent containing an organic substance, which is indirectly heated, subjected to dry distillation gasification and combustion, and further subjected to agitation and air blowing for treatment. The present invention relates to a dry distillation incinerator for a powdery granular waste catalyst or a waste adsorbent containing an organic substance that promotes dry distillation and combustion of the product.

[0002]

2. Description of the Related Art In order to remove used organic substances from adhering waste catalysts or waste adsorbents, it is usually necessary to incinerate them by heating. It is used. However, waste catalysts or waste adsorbents that contain a relatively large amount of organic substances such as solvents or residues of reactants or adsorbates can cause rapid combustion of the contained organic substances during incineration, so it is possible to control combustion. very hard.

For this reason, a direct heating type incomplete combustion type carbonization furnace may be used for incineration of an organic substance or a substance containing an organic substance, but since it is a fixed type furnace, a relatively large-shaped object to be treated is used. It is suitable, but for powdery and granular materials, the contact between air and the interior of the material is poor, and only the surface burns and the interior does not burn easily, and it takes a long time. Easy and difficult to process.

A kiln type incinerator capable of coping with these problems to some extent is effective for a powdery or granular material, but for treating a material containing an organic substance, the amount of the treated material is controlled to control combustion of the organic substance. However, there was a problem that the equipment was inevitably large in size.

When recovering valuable materials from waste catalysts or waste adsorbents, the recovery rate of incineration materials containing valuable materials is an important factor. To improve combustion efficiency, improve agitation or burn quantity. If the value is increased, the powdery granular incineration material containing valuable materials will be scattered more and the recovery rate will decrease.

[0006]

DISCLOSURE OF THE INVENTION The present invention is to solve such a problem. It is possible to easily suppress and control the rapid combustion of organic substances, and to suppress the scattering of powdery and granular objects to be treated.
An object of the present invention is to provide a dry distillation incinerator for a powdery granular waste catalyst or waste adsorbent containing an organic substance, which can control combustion, can be efficiently burned, and can also downsize a furnace body.

[0007]

The above objects can be achieved by the following dry distillation incinerator.

That is, according to the present invention, a vertical circular furnace has a rotary shaft, an arm is attached laterally from the rotary shaft, and a stirring blade is attached to the arm. Is characterized in that an air supply device having an air outlet for forcibly sending air to the upper part of the furnace separated from the furnace and a heating part for indirectly heating the furnace are provided in the outer peripheral part and the bottom part of the furnace It is in a dry distillation incineration system for powdery granular waste catalyst or waste adsorbent containing organic substances.

[0009]

In the present invention, the rapid combustion of the organic substance is easily suppressed by indirectly heating the powdery or granular waste catalyst or the waste adsorbent containing the organic substance to dry-distill / decompose and gasify the contained organic substance. , Controllable. In addition, the generated gas is burned in a secondary combustion furnace, and the residue after dry distillation and decomposition is fed with air from the upper part of the residue while stirring to control the combustion while suppressing the scattering of powdery and granular materials, In addition, it can burn efficiently and the furnace body can be downsized.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings.

1 and 2 are vertical sectional views showing an embodiment of an apparatus for dry distillation incineration of a powdery granular waste catalyst or waste adsorbent containing an organic substance according to the present invention. In the figure, 1 is a dry distillation incinerator body, 2 is a charging port, 3 is an air inlet, 4 is a dry distillation / decomposition gas discharge port, 5 is a stirring rotary shaft, 6 is an arm, 7 is an air outlet, and 8 is a stirring. A blade, 9 is an incinerator discharge port, 10 is a stirring drive unit, 11 is a heating unit, 12 is an air inlet pipe, and A is an object to be treated.

As shown in FIGS. 1 and 2, a vertical circular dry distillation incinerator body 1 has a charging port 2 and an exhaust port for introducing the generated dry distillation / decomposition gas to a secondary combustion furnace (not shown). 4 and an air inlet 3 for introducing air from an air blower (not shown) into the dry distillation incinerator.

A stirring drive unit 1 provided at the bottom of the dry distillation incinerator.
The rotary shaft 5 is provided in the center through the axis 0, the rotary shaft 5 is provided with an arm 6 in the lateral direction, and the arm is provided with a stirring blade 8. Two to six arms are radially attached to the rotary shaft, and one to four stirring blades are attached to the arm, and the angles are 0 to 60 degrees in the vertical direction and 0 to 45 degrees in the arm direction.

In FIG. 1, an air outlet 3 penetrating the air inlet 3 is attached to the arm. The air outlet is provided at an upper part apart from the surface of the object layer, and the air outlet angle is adjusted to 0 to 80 degrees with respect to the vertical and its direction is adjusted to 0 to 360 degrees.

Also, a shower nozzle having an angle of 20 to 60 degrees can be used, and the air outlet may be a simple opening, and its structure and shape can be selected appropriately.

The amount of air introduced is adjusted so that the air flow velocity on the surface of the object to be treated is 5 to 100 cm / sec (hereinafter, the flow velocity is converted to NTP). It is also possible to provide an air preheater between the air blower (not shown) and the air inlet 3 to preheat the incoming air before feeding it into the furnace.

In addition to the arm 6 shown in FIG. 1, the air pipe to which the air outlet is attached may be provided with a ring-shaped air inlet pipe 12 as shown in FIG. 2, and the air outlet may be attached thereto. Also, the distance between the surface of the layer to be treated and the outlet may be adjustable. The distance between the object to be processed and the air outlet is adjusted so that the air flow velocity is 5 to 100 cm / sec on the surface of the object layer.

A heating unit 1 is provided at the bottom and outer periphery of the dry distillation incinerator.
1 is used, and electric heat or combustion exhaust gas from a secondary combustion furnace is used as a heating source. An incinerator discharge port 9 is provided at a part of the bottom of the dry distillation incinerator.

The material A to be treated is a powdery granular waste catalyst or a waste adsorbent containing an organic substance charged in a dry distillation incinerator,
A shallower layer height of the object to be treated is better for heating and contact with air, but is preferably 20 to 50 cm.

Next, the operation of the dry distillation incinerator of the present invention will be described. First, the charging port 2 is opened, and a powdery granular waste catalyst or a waste adsorbent containing an organic substance is charged, and the charging port 2 is closed again. Prior to heating the dry distillation incinerator, the heating burner of the secondary combustion furnace is ignited to heat the secondary combustion furnace. Next, the heating part 11 of the dry distillation incinerator is operated to start heating, and the generated dry distillation / decomposition gas is introduced from the gas discharge port 4 to the secondary combustion furnace where it is completely combusted. The amount of dry distillation / decomposition gas generated is controlled by the temperature of the heating section 11, but if necessary, the air from the air supply port 3 connected to the air blower is fed into the furnace from the air blowing port 7, It can also be done by controlling the amount of air. The amount of air to be adjusted is adjusted in the range of an air flow velocity of 5 to 50 cm / sec on the surface of the material layer to be treated, and the amount is adjusted according to the capacity of the secondary combustion furnace. If necessary, an air preheater is provided between the air blower and the air inlet 3 to preheat the incoming air to supplement the heating of the object to be treated. In the latter half of the dry distillation, the stirring drive unit 10 is further operated to rotate the rotary shaft 5, and the stirring blade 8 attached to the end of the arm stirs the object A to be treated, which is the powdery granular waste catalyst or the waste adsorbent, and the dry distillation is performed.・ Promote decomposition.

The number of revolutions of the stirring shaft is controlled within 10 revolutions per minute, but it is operated intermittently if necessary. The temperature for dry distillation / decomposition is heated to 50 to 400 ° C.

After the completion of the dry distillation / decomposition, the temperature of the heating section 11 is raised, and further the amount of air introduced into the air outlet 7 is increased so that the flow velocity on the surface of the object layer is 40 to 100 cm / sec. In combination with the stirring effect of the stirring blades 8, the contact between the powdery and granular dry distillation / decomposition residue and air is sufficiently made to efficiently burn the residue. Since the air outlet 7 is provided at the upper part of the residue, the amount of air from the air outlet 7 and the rotation speed of the stirring shaft 5 are set to 10 rpm or less and the continuous operation or the intermittent operation is controlled to control the granularity. It is also possible to suppress the scattering of the residue. Combustion is controlled by controlling the temperature of the heating unit 11, the amount of air introduced from the air outlet 7 and the air preheating temperature. By changing the angle of the air outlet 7 and the amount of air supplied, it is possible to adjust how the air hits the object to be processed, and to adjust the efficiency of combustion and the scattering of residues. The heating temperature for combustion and incineration of the dry distillation residue is 400 to 700 ° C.

After the incineration, the incinerated material (processing object) of the waste catalyst or the waste adsorbent is cooled and then discharged from the discharge port 9 to the outside of the furnace.

[0024]

With the above-mentioned structure, the dry distillation incinerator of the present invention has the following effects.

(1) Since the furnace has a stirring device,
It is possible to efficiently burn and incinerate powdery and granular materials.

(2) The heating is mainly indirect heating, and further, since dry distillation / decomposition and combustion incineration are operated separately, it is possible to treat even those containing a large amount of organic substances.

(3) Since the amount of dry distillation / decomposition gas generated by controlling the heating temperature and the amount of air sent into the furnace can be controlled, a wide range of properties can be efficiently treated.

(4) Since the air outlet is opened at a position separated from the surface of the object layer, combustion is combined with the effect of controlling the number of revolutions of stirring, the heating temperature and the amount of introduced air. It can be controlled and also prevents scattering of incinerated materials (processing objects).

(5) Since the combustion can be performed efficiently, the size of the furnace body can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an example of a dry distillation incinerator of the present invention.

FIG. 2 is a vertical cross-sectional view showing another example of the dry distillation incinerator of the present invention.

[Explanation of symbols]

1: Main body of dry distillation incinerator, 2: Charge port, 3: Air inlet,
4: Dry distillation / decomposition gas discharge port, 5: stirring rotary shaft, 6: arm, 7: air outlet, 8: stirring blade, 9: incinerator discharge port,
10: stirring drive unit, 11: heating unit, 12: air inlet pipe,
A: Object to be processed.

Claims (1)

[Claims] 1. A furnace having a vertical circular furnace having a rotary shaft, an arm attached to the arm in a lateral direction from the rotary shaft, and a stirring blade attached to the arm, the furnace being separated from the surface of the object layer. An air supply device in which an air outlet for forcibly sending air to the inner upper part is opened, and a heating part for indirectly heating the furnace is provided in the outer peripheral part and the bottom part of the furnace, Dry distillation incinerator for the powdered granular waste catalyst or waste adsorbent contained.