JPH0861631A - Method and apparatus for incinerating waste oil and pulp sludge - Google Patents

Abstract

PURPOSE: To conduct efficient incineration of subjects to be incinerated by a method wherein previously and differently prepared pulp sludge and waste oil are kneaded with a specified ratio and kneaded mixture is guided into a hopper to transfer it into an incinerator continuously by a piston pump while conveying it by a screw conveyer device arranged below the hopper. CONSTITUTION: When the upper part of a drum can 1 is pushed and fixed by a pushing machine 5 and a discharging hole 11 is formed on the bottom 10 of the can by a boring machine 6, waste oil 2 can be taken out of the bottom 10 of the can by the gravity thereof. A screw kneading device 12 mixes the taken-out waste oil 13 and pulp sludge 16, prepared previously in a vessel 15 separately, upon guiding the waste oil 13 into a kneading chamber 14 while the ratio of kneading of the pulp sludge 16 to the waste oil 13 is 20-50wt% and sufficient headed condition can be obtained within a short period of time of kneading. A transfer device 19 sents the kneaded substance, having a high viscosity, continuously into an incinerator 17 by the optimum amount and the kneaded substance can be incinerated under a condition closed to complete combustion in the incinerator whereby the whole of a system can be constructed so as to have a high efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incineration method and an apparatus suitable for incinerating industrial oil waste oil and pulp sludge together.

[0002]

2. Description of the Related Art Conventionally, when incinerating waste oil, pulp sludge discharged from a paper mill is used to mix the two and carry them out to facilitate other handling work, and then carry them into an incinerator where they are put together. It is known that the ash content is incinerated and the ash content is landfilled or used as an aggregate for other materials.

However, the waste oil is usually packed in a drum and conveyed to an incinerator where it is awaiting treatment, so it is necessary to take it out of the drum once for processing, but since the waste oil itself is highly viscous, it is difficult to handle and take it out. Therefore, it is difficult to take out the waste oil from the drum can because it is easy to catch fire if the sparks fly when opening the drum can. Furthermore, even in the kneading process with pulp sludge, the waste oil has a high viscosity and it was difficult to knead with the pulp sludge in a short time. Furthermore, when considering the efficiency of incineration, when using a large incinerator such as a kiln, the inlet is located at a height of about 15 m above the ground, and such a large incinerator is a drum can or other due to the layout of the incinerator. Since it is placed away from the place where the incineration target is placed, it is difficult to transport the incineration target there, and in the past it was put in a large size container bag and carried by a crane to incinerate the container bag together. However, there was a demand to save the cost of the container bag in addition to the troublesome transportation.

[0004]

The conventional processing method and apparatus are improved so that the waste oil can be easily taken out from the drum, the waste oil and the pulp sludge can be kneaded in a short time, and a kiln type incinerator can be obtained. , Regardless of height or distance
An object of the present invention is to provide a processing method and an apparatus for enabling the incineration target to be transported and efficiently incinerated.

[0005]

To achieve the above object, the method for incinerating waste oil and pulp sludge according to the present invention is as follows. First, a drum can filled with waste oil is pressed and fixed at the upper part, and a perforator is applied from the lower part to the can. By forming a discharge hole at the bottom so that the waste oil is discharged from the bottom of the can and taken out, the waste oil can be easily taken out from the drum, and then the pulp sludge prepared separately beforehand is added to the taken-out waste oil.
─ 50 wt% kneading is performed for a short time, and this kneaded material is guided into the hopper and cut out by the screw cutting device arranged at the lower part of the hopper and continuously conveyed to the incinerator by the piston pump. It is designed to be incinerated.

In the incinerator for waste oil and pulp sludge according to the present invention, in order to take out the waste oil, a pressing machine for pressing and fixing the drum can filled with the waste oil is combined with a punching machine for forming a discharge hole in the bottom of the drum. The waste oil take-out device is used, and for kneading, there is an inclined kneading chamber for oil storage inside, and the pulp sludge prepared separately in advance and the screw kneading device that receives and kneads the taken-out waste oil are used, and the conveying device is used. Shall be equipped with a hopper that receives the kneaded material from the screw kneading device, and a screw cutting device that is placed in the lower part of the hopper, and a piston pump that conveys the kneaded material cut from the lower part of the hopper, and the kiln type as an incinerator. The incinerator was used.

[0007]

Operation: Gas may accumulate on the upper side of the drum filled with waste oil and sparks may ignite, but there is no danger of ignition because the discharge hole is opened by a punching machine at the bottom of the can which does not contain gas Therefore, since the waste oil is released under its own weight, it is not necessary to tilt the drum and the waste oil can be taken out that much. Then, the extracted waste oil is guided to a kneader, where the separately prepared pulp sludge is kneaded in a proportion of 20 to 50 wt% with respect to the waste oil, so that proper kneading can be performed in a short time and high-viscosity waste oil is converted into pulp sludge. It can be soaked and changed to a physical condition that is easy to carry and handle. At this time, if a kneading machine having an inclined kneading chamber for storing oil is used, the kneading degree is improved without the waste oil flowing out from the kneading machine. Then, if this kneaded material is guided into the hopper and cut out by the screw cutting device arranged at the bottom of the hopper and continuously conveyed to the incinerator by the piston pump, it is easy to cut out even a highly viscous kneaded material,・ It is easy to pump to high places, and it is possible to load the kneaded material as it is without using a crane into an incinerator that is located at a distant position and has a charging port at a considerably high position, and is a kiln-type incinerator. If used, efficient incineration treatment can be achieved.

[0008]

Embodiments will be described below with reference to the drawings.

FIG. 1 is a process diagram for explaining a method for incinerating waste oil and pulp sludge, and FIG. 2 is an overall schematic diagram of the treating apparatus. For convenience of explanation, the “apparatus” will be mainly described below, and the “method” will be referred to as necessary.

The drum can 1 is filled with waste oil 2. Here, the waste oil 2 is treated as industrial waste such as paints such as water-based paints, chlorinated rubber-based paints, epoxy resin-based paints and abras sludge. It mainly targets the ingredients that have.

The waste oil removing device 3 arranged in the waste oil removing step A takes out the waste oil 2 by opening one drum can 1 and takes out the waste oil 2. The pressing device 5 and the perforator 6 are paired above and below the pedestal 4. And are placed.

A skid 7 for supplying or taking out the drum 1 and a working table 8 for holding the drum 1 in the punching process are connected to the pedestal 4, and a presser 5 is placed above the working table 8 and downward. The punching machines 6 are arranged correspondingly at the top and bottom. The pressing machine 5 presses and fixes the upper portion of the drum can 1, and the punching machine 6 has a spear-shaped tip portion 9 and a pressing cylinder (not shown) applies an upward pressing force to the can bottom 1.
The discharge hole 11 is formed at 0. Therefore, can bottom 10
When the drain hole 11 is formed in the bottom of the can 1
It is not necessary to tilt the drum can 1 because the whole amount can be discharged by itself from 0 and taken out to the outside.

Next, the screw kneading device 12 provided in the kneading step B is a twin screw type mixer, and when the waste oil 13 taken out as described above is introduced and put into the kneading chamber 14, a separate container 15 is prepared in advance. It is mixed with the pulp sludge 16 prepared in. The mixing ratio of the pulp sludge 16 and the waste oil 13 taken out is 20
A sufficient kneading state can be obtained by kneading at a rate of -50 wt% for a short time of about 5 to 10 minutes. That is, it is inconvenient to carry the waste oils 2 and 13 into the incinerator 17 and the like because they have a high viscosity when they are in a single state, so that they are easy to handle by kneading with the pulp sludge 16 that is also an industrial waste. It is changed to high viscosity sludge (kneaded material). And, the bottom of the kneading chamber 14 is about 9 °
If the sloped bottom 18 is inclined, the kneading degree can be expected to be improved while preventing the waste oils 2 and 13 from flowing out, and the kneading can be carried out as necessary for a short time of only a few minutes.

Next, the transfer device 19 used in the transfer step C is
It is composed of a hopper 20 and a piston pump 21. The hopper 19 is for supplying an appropriate amount of the kneaded material to the piston pump 21, and is equipped with a screw cutting device 22 at the bottom. The piston pump 21 for conveying the kneaded material cut out from the lower part of the hopper 20 to the incinerator 17 is of a twin auger type and has a piston pressure of 10 kg / c.
m ² and the one having a carrying capacity of about 100 to 200 m is adopted.

Further, as the incinerator 17 constituting the incineration step D, a kiln type is used. Kiln type incinerator 17
Since its charging port 23 is above the height of about 15 m above the ground, the kneaded material is lifted up and supplied at a stretch by the conveying capacity of the piston pump 21. The twin auger type piston pump 21 described above is very powerful and is suitable for transporting high-concentration and high-viscosity substances, and easily feeds the kneaded material to the inlet 23 located above the ground height of about 15 m. it can. Incinerator 1
In No. 7, the kneaded product is completely incinerated using heavy oil 24, but if cinder 25 is generated, it is reused as a landfill or as an aggregate.

[0016]

As described above, according to the present invention, in the waste oil removing process and the waste oil removing device, the drum can is taken out by opening the discharge hole in the can bottom without tilting the drum and avoiding the danger of ignition and taking out the waste oil. Is easy and
The kneading process and its screw kneading device can knead the taken out waste oil with the pulp sludge and change it into a sufficiently kneaded material in a short time to make it into a physical condition that is easy to handle. The equipment continuously sends an appropriate amount of kneaded material with high viscosity to the incineration process and its incinerator under pressure, and incinerates it in a state close to complete combustion, so the entire industrial waste treatment system. The system can be constructed with high efficiency.

[Brief description of drawings]

FIG. 1 is a process diagram for explaining a method for incinerating waste oil and pulp sludge.

FIG. 2 is an overall schematic view of a waste oil and pulp sludge incineration processing apparatus.

[Explanation of symbols]

 A waste oil removal process B kneading process C transporting process D incineration process 1 drum can 2 waste oil 5 presser 6 puncher 12 screw kneading device 13 waste oil 16 pulp sludge 17 incinerator 19 transporting device 20 hopper 21 piston pump

Claims (2)

[Claims] 1. A waste oil-filled drum can is pressed and fixed at the upper part, and a punching machine is applied from the lower part to form a discharge hole at the bottom of the can, thereby discharging the waste oil from the can bottom and taking out the pulp sludge prepared separately in advance. The extracted waste oil is kneaded at a ratio of 20 to 50 wt%, and this kneaded material is introduced into the hopper and cut out by the screw cutting device arranged at the lower part of the hopper while being continuously conveyed to the incinerator by the piston pump for incineration treatment. Method for incinerating waste oil and pulp sludge. 2. A waste oil take-out device in which a pressing machine for fixing the upper portion of a drum can filled with waste oil by pressure is combined with a punching machine for forming a discharge hole at the bottom of the drum can, and a kneading chamber having an inclination for an oil reservoir is provided inside. However, a screw kneading device that receives and kneads separately prepared pulp sludge and the waste oil extracted above, a hopper that receives the kneaded material from the screw kneading device, and a screw cutting device that is arranged at the bottom of the hopper, and a screw cutting device that cuts from the bottom of the hopper. An incinerator for waste oil and pulp sludge, comprising a conveyor equipped with a piston pump to convey the kneaded mixture, and a kiln-type incinerator.