KR20110091167A - Washing apparatus of waste bottom ash and washing method the same - Google Patents

Abstract

PURPOSE: A washing apparatus for waste bottom ash, and a washing method thereof are provided to separate the waste bottom ash by particle size using a cyclone, and to effectively remove chloride from the waste bottom ash. CONSTITUTION: A washing apparatus for waste bottom ash comprises the following: a cyclone unit with upper and lower rotors(2,4) including classification chambers(7,8), for discharging particles with the different diameter after separating; a magnet unit collecting ferrous metal from the waste bottom ash inside the cyclone unit; a driver rotating a drum by being installed in between the cyclone unit and the drum; a water supplying pipe(52) supplying water into the drum; an agent inlet for inserting reagents; and a sealed pipe for inserting gas.

Description

Washing Apparatus of Waste Bottom Ash and Washing Method the same}

The present invention relates to a washing device and a washing method of the waste flooring, and more particularly, the washing device and washing of the waste flooring material which can easily perform the step of removing the chloride by separating the flooring material discharged after the waste incineration by particle size. It is about a method.

Although the main disposal method of incineration ashes of conventional household waste was landfilling, it became difficult to secure landfill sites that require a large area, and environmental pollution problems such as soil and water quality occurred. Therefore, recycling methods such as landfills have been studied. .

Incidentally, incineration ash is composed of flooring and fly ash. Among them, the flooring has a high occupancy rate and low environmental hazards, so it is possible to reuse it. There are many restrictions on recycling.

Therefore, a classifier using a net, a sieve, or a centrifugal force has been developed. As a method for removing harmful components in the flooring, there is a method of stabilizing by storing the flooring for more than three months for a long time. Because of the demand, the method of washing and dissolving with water is considered to be superior in terms of time and economy. However, in the general water washing method using a stirrer, it is economically wasteful to put large particles in the washing process in which large particles and small particles having different contents are mixed. There is a possibility of remaining. In addition, when only washing with water, there was a disadvantage that insoluble chloride remains.

Therefore, the present inventors have made a diligent effort to solve the above problems, and as a result, by using a cyclone to collect the particles classified by particle size to move to each washing process and a washing method and a water washing method that can remove insoluble chlorides. Through, it was confirmed that the classification and washing process can be easily performed, the present invention was completed.

The present invention provides a device for classifying waste flooring material by particle size and a method for washing with water that can effectively remove chloride.

In order to achieve the above object, the present invention, by holding the small diameter of the rotor installed in the upper center of the lower rotor, the classification chamber is installed on each of the rotors that become smaller in diameter toward the bottom, and rotatably A cyclone unit installed so as to classify and discharge particles having different diameters in stages; A detachable magnet part for sorting ferrous metal inside a fraudulent cyclone; Drive means installed between the cyclone portion and the drum to rotate the drum; Provided is a washing device for waste flooring material, which is inserted into the drum to supply water, an inlet for injecting waste flooring material, and a closed pipe for injecting gas.

The present invention also comprises the steps of: (a) separating the incineration ash by particle size; (b) washing the particle sized incinerator to remove the water-soluble chloride; And (c) removing the insoluble chloride from the washed incinerator using a carbonation process.

The washing device and the washing method of the flooring waste according to the present invention, by using the cyclone to collect the particles classified by the particle size and each of the moving to the washing process through the washing device and the water washing method that can remove insoluble chlorides. The waste flooring material can be recycled by easily performing the classification and washing process.

1 shows the structure and arrangement of a water washing device.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In general, the nomenclature used herein and the experimental methods described below are well known and commonly used in the art.

In one aspect, the present invention is to hold the small diameter of the rotor installed in the upper portion of the center of the lower rotor, the classification chamber is installed in each of the rotors are gradually reduced in diameter downward, and the rotation speed can be adjusted A cyclone unit for classifying and discharging particles having different diameters in stages; A detachable magnet part for sorting ferrous metal in the cyclone; Drive means installed between the cyclone portion and the drum to rotate the drum; And a water supply pipe inserted into the drum to supply water, an inlet for injecting reagent, and a closed pipe for injecting gas.

In the present invention, the rotor includes an inlet for introducing the waste flooring into the classification casing and a discharge portion for discharging the classified particles to each classification chamber. Different diameters and rotational speeds of the upper and lower rotors are used to sequentially classify particles of a desired size and collect them in the classification chamber. In the present invention, the classification criteria are classified as 0.1 mm. The rotation speed of the upper rotor and the lower rotor is controlled in the range of 10 ~ 100rpm. In the classification process, a 20 mesh sieve is placed in the passageway to the classification chamber so that a relatively large particle floor material falls to the bottom of the rotor without moving to the classification chamber.

In the present invention, the classification chamber includes first and second classification chambers, the first classification chamber is connected to the upper rotor, and the second classification chamber is connected to the lower rotor to collect and store the classified particles. .

In the present invention, the magnetic part is installed on the wall of the rotor to separate the ferrous metal particles mixed in the waste while the waste floor is added and classified through the rotation process. After the rotation classification process is completed, the magnet part may be separated from the rotor to easily remove the collected ferrous metal particles.

In the present invention, the drum is formed in a cylindrical shape with both ends of the opening, the center of rotation is installed to one side so that the waste flooring material supplied inside the drum to achieve a variety of flows without achieving uniform rotation in the drum water supply pipe The contact with the water supplied by the water is further increased.

In the present invention, the water supply pipe is provided with a plurality of nozzles on the circumferential surface so that the water is injected into the drum, the inclination of the drum when the inclination of the drum is adjusted by interposing a corrugated pipe in the portion extending outward of the cyclone portion Depending on the inclination of the water supply pipe to be variable. In addition, a plurality of sieves are installed between the outer wall of the water supply pipe and the inner wall of the drum, the sieve is formed so that the gap between the sieve and the sieve is narrowed step by step from the inlet to the outlet through which the waste floor is introduced, so that the waste passing through the drum The flow is gradually increased to increase the contact with water sprayed from the water supply line.

In the present invention, the driving means is configured to include a belt connected to the circumferential surface of the drum to rotate the drum, the motor is connected to the rotating shaft to transmit the drum driving force.

In the present invention, the inlet of the waste floor is located at the upper end of the drum, and is through the first and second classification chambers, respectively. The tube to inject gas is installed including a cock that can open and close, and the silicon tube is connected to the end of the tube so that the gas can directly penetrate into the solution.

The present invention in another aspect, (a) separating the incineration ash by particle size; (b) washing the particle sized incinerator to remove the water-soluble chloride; And (c) removing the insoluble chloride from the washed incinerator using a carbonation process.

In the present invention, the step (a) is made by a washing device, and separated from the ferrous metal particles in the rotor, the first classification chamber is connected to the rotor of the upper to collect particles having an average particle size of 0.1mm or more and The second classification chamber is connected to the lower rotor to collect and store particles having an average particle size of less than 0.1 mm, and to each drum by using a bottom ash input pipe connected to the drum in each classification chamber.

In the present invention, the washing step of the step (b) is carried out in a drum, the distilled water of pH 5.8 ~ 6.3 is added to the flooring material to be measured with a liquid-liquid ratio (Liquid / Solution) of 5 and stirred for 20 hours. . The stirred sample and the leachate are separated using a microfilter mounted on the drum bottom.

In the present invention, the carbonation process of the step (c) is a liquid-liquid ratio (Liquid / Solution) of H ₂ O and waste flooring to 10 and blow the drum while blowing for 30 minutes using a thin tube of CO ₂ , stirring the drum . The stirred sample and the leachate are separated using a micro filter mounted to the bottom of the drum. Collected waste floors have a uniform particle size and are free of water-soluble and insoluble chlorides.

The washing apparatus and washing method of the waste flooring of the present invention is a device capable of collecting and classifying particles classified by particle size by particle size, and then moving and washing with water, respectively, and a washing method capable of removing water-soluble chlorides and insoluble chlorides. Through, the classification and washing process is easily performed and the treated waste flooring particles are removed from the harmful substances and uniform particle size so that it can be used directly in the manufacture of various building materials, such as through the process of drying.

Example: Treatment of Waste Flooring Using Washing Device and Washing Method

Hereinafter, the present invention will be described in more detail by way of examples. These examples are intended to illustrate the present invention in more detail, and it will be apparent to those skilled in the art that the scope of the present invention is not limited to these examples.

The waste floor was put into the upper rotor, rotated at 20 rpm for 30 minutes to collect particles having an average particle size of 0.1 mm or more in the first classification chamber, and the remaining floor was put into the lower rotor for 60 minutes at 50 rpm. Collected. Magnetic parts were installed on the upper and lower rotor walls to remove the ferrous metal particles contained in the flooring. The upper diameter of the upper rotor of this embodiment is 40 cm, the upper diameter of the lower rotor is 20 cm. A cylindrical drum having a diameter of 50 cm and a length of 100 cm was installed, and the drum was inclined about 5 degrees, and the rotation speed could be adjusted to 100 to 300 rpm. Three nozzles were installed in the water supply pipe installed at the top of the drum to spray water at about 20 ° C. The waste floor used in the experiment was collected at an incinerator in Seoul.

The particles collected in the first classification chamber are moved to a drum, and distilled water having a pH of 5.8 to 6.3 is added so as to have a solid solution ratio of 5. After stirring for 24 hours at a speed of 200rpm, the leachate and the sample were separated, and the concentrations of the Group 1 metals and Cl were measured for the leachate, and the bottom ash sample was dried and analyzed by X-ray diffractometer to determine the presence of chloride. As a result, the water-soluble chloride was measured in the leaching solution, and the peak of the insoluble salt was confirmed in the flooring sample. Distilled water was added to the solid bottoms sample at a high liquid ratio of 10, and the carbon dioxide gas was blown through a tube for 50 minutes and stirred at a speed of 200 rpm for 40 minutes. After separating the leach solution and the sample, the Group I metal element was not measured for the leach solution, but a small amount was measured for the insoluble salt. After drying, the flooring sample was analyzed by an X-ray diffractometer to confirm that the insoluble chloride peak disappeared after washing.

The particles collected in the second classification chamber are moved to a drum, and distilled water having a pH of 5.8 to 6.3 is added so as to have a solid solution ratio of 5. After stirring for 15 hours at a speed of 200rpm, the leachate and the sample were separated, and the concentrations of the Group 1 metals and Cl were measured for the leachate, and the bottom ash sample was dried, and analyzed by X-ray diffractometer to determine the presence of chloride. As a result, the water-soluble chloride was measured in the leaching solution, and the peak of the insoluble salt was confirmed in the flooring sample. Distilled water was added to the solid bottoms sample at a solid solution ratio of 10, and the carbon dioxide gas was blown through the tube for 30 minutes and stirred at a speed of 200 rpm for 30 minutes. After separating the leach solution and the sample, the Group I metal element was not measured for the leach solution, but a small amount was measured for the insoluble salt. After drying, the flooring sample was analyzed by an X-ray diffractometer to confirm that the insoluble chloride peak disappeared after washing.

In addition, through the analysis of each X-ray diffraction apparatus, it was confirmed that the size of the particle size after the washing process is uniform.

As shown in the above experimental results, when the waste floor is treated using the washing apparatus and the washing method, it was confirmed that the process of removing harmful substances can be easily performed, and each of the particles separated through the classification process By experimenting, an economic effect can be obtained and made easy to apply to the recycling step.

As described above in detail the specific parts of the present invention, for those of ordinary skill in the art, these specific descriptions are only preferred embodiments, which are not intended to limit the scope of the present invention. Will be obvious. Thus, the substantial scope of the present invention will be defined by the appended claims and their additives.

1 cyclone support
2 upper rotor
3 Upper rotor and 1st classroom connection pipe (outlet)
4 lower rotor
5 Lower rotor and second classifier connection pipe (outlet)
6 Sample flow path between upper and lower rotors
7 first classification room
8 second classification room
9 Sample transfer passage in the first classification chamber and drum
10 Sample transfer passage in the second classification chamber and drum
50 drum body
51 Rotation angle adjustment part of the drum
52 water line
53 gas inlet
54 Gas input pipe
55 drainpipe

Claims (4)

Grasp the small diameter of the rotor installed in the upper part as the center of the lower rotor and install a classifying chamber in each of the rotors whose diameter becomes smaller as they go down. A cyclone unit for classifying and discharging the gas;
A detachable magnet part for sorting ferrous metal in the cyclone;
Drive means installed between the cyclone portion and the drum to rotate the drum;
And a water supply pipe inserted into the drum to supply water, an inlet for injecting reagent, and a closed pipe for injecting gas.
The washing | cleaning apparatus of the waste flooring material of Claim 1 provided with the passage | path of the waste flooring material which connects the said 1, 2 classification chamber and a drum, respectively.
A method of flushing waste flooring, comprising the following steps:
(a) separating the incineration ash by particle size;
(b) washing the particle sized incinerator to remove the water-soluble chloride; And
(c) removing the insoluble chloride from the washed incinerator using a carbonation process.
The method of claim 3, wherein the incineration ash of step (a) is separated into particles having an average particle size of less than 0.1mm and particles having an average particle size of 0.1mm or more.

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