KR100919302B1 - Neutralizing apparatus and method of recycled aggregates using reaction of rapid carbonation - Google Patents

Abstract

PURPOSE: A neutralizing apparatus of recycled aggregate using a promoting neutralization reaction and a method thereof are provided to improve productivity by promoting a neutralization reaction while penetrating carbonated water into the recycled aggregate. CONSTITUTION: A neutralizing apparatus(100) of recycled aggregate using a promoting neutralization reaction includes a chamber body(111), an input body(114), a discharge body, an agitating device(120), a carbonated water molecular device(140), and a dehydration device(150). The chamber body includes an inlet, a neutralization space, and an outlet. The input body is arranged on a side of the chamber body. The discharge body is arranged on the other side of the chamber body. The agitating device is installed at the chamber body. The carbonated water molecular device is connected with a side of the chamber body. The dehydration device connected with the outlet dehydrates the recycled aggregate.

Description

Neutralizing Apparatus and Method of Recycled Aggregates Using Reaction of Rapid Carbonation

The present invention relates to an apparatus and method for neutralizing circulating aggregate using accelerated neutralization reaction.

In general, aggregate is a material that is the framework of concrete. It should be solid and chemically stable, mainly sand and gravel.

Aggregate is divided into natural aggregate and circulating aggregate according to the production state. Natural aggregates include gravel and sand from rivers and gravel and sand from mountains or the sea. Gravel and sand collected from mountains or the sea are mixed with impurities such as clay and salt, and used after being washed or stabilized by adding chemicals.

Circulating aggregate is used to produce various aggregates by firing various materials, or by crushing waste concrete generated by dismantling concrete structures that have reached their endurance.

Here, the circulating aggregate is a method of producing aggregate that can recycle the waste concrete that occupies the most amount in the construction waste. In other words, recycling aggregates used with cement at the time of construction is cheap, and the use of recycled aggregates is recommended in order to reduce the production cost of aggregates, recycle waste resources, and prevent environmental pollution caused by waste concrete generation.

Circulating aggregate is produced by crushing and sorting waste concrete, and can be used for various purposes such as road work, fill, and concrete aggregate. However, the finely divided cement and cement are attached to the circulating aggregate, and thus the quality is better as the cement has environmental pollutants. That is, the recycled aggregate is composed of cement fine powder and cement-coated natural aggregate, and has a high absorption rate and a low density and is recognized as a low quality aggregate, and its use is limited. It has strong alkalinity and may contain heavy metals.

Cement containing heavy metals with strong alkalinity is contaminated with soil if it is landfilled and recycled.

Recycled aggregates have been developed to reduce heavy metals while neutralizing strong alkalis by washing with water several times or by adding chemicals such as neutralizers to remove cement fines and attached cements.

However, the neutralization method of the prior art has a low rate of neutralization, and thus, by performing a plurality of repetitive operations, the production cost is increased, and there is a possibility that secondary contamination for the production of recycled aggregates may occur using chemicals such as neutralizers.

Therefore, there is an urgent need for the development of a technology capable of reducing the production cost by lowering the absorption rate, high density, and reducing the number of processes while neutralizing cleanly without secondary pollution.

The problem to be solved by the present invention is that carbonated water mixed with carbonic acid gas and water is injected, a strong alkaline circulating aggregate is introduced into the inside of the chamber body in which the circulating aggregate is agitated, and the neutralization reaction is promoted while being stirred with the carbonated water. It is to provide an apparatus and method for neutralizing circulating aggregates using accelerated neutralization reactions that shorten and improve productivity.

The neutralization device of the circulating aggregate using the accelerated neutralization reaction according to an embodiment of the present invention has an inlet through which the circulating aggregate is input, and has a neutralization space in which the circulating aggregate is accommodated, and the circulating aggregate is discharged to the other side. A chamber body having an outlet, disposed on one side of the chamber body, an inlet body for opening and closing the inlet, disposed on the other side of the chamber body, an outlet body for opening and closing the outlet, and installed in the chamber body, A stirring device for stirring the circulation aggregate located inside the neutralization space, connected to one side of the chamber body, a carbonated water injection device for injecting carbonated water into the neutralization space, and disposed on the other side of the chamber body, Dewatering to dewater the circulating aggregate discharged in connection with the outlet And a water device, wherein the carbonated water injection device may inject carbonated water mixed with carbonic acid gas and water into the neutralization space so that a neutralization reaction occurs with the circulation aggregate.

The apparatus may further include a heater disposed inside the chamber body and heating the neutralization space.

And, the carbonated water injection device is located on one side of the chamber body, the carbonated water tank is connected to the carbon dioxide gas supply pipe is supplied carbon dioxide gas and the water supply pipe is supplied water is mixed carbonic acid gas and water, inside the chamber body It is located, the injection nozzle for injecting carbonated water to the circulation aggregate, the carbonated water tank and the injection nozzle is connected, the carbonated water supply pipe for supplying the carbonated water mixed in the carbonated water tank to the injection nozzle, and one side of the carbonated water supply pipe It is connected to, and may include a supply valve for controlling the quantity of the carbonated water supplied from the carbonated water tank.

In addition, the stirring device is located in the interior of the neutralization space, the stirring body capable of stirring the circulation aggregate, and is disposed on one side of the chamber body, the stirring motor is connected to rotate the stirring body It may include, the stirring body may be rotated by the operation of the stirring motor to agitate the circulation aggregate injected into the neutralization space.

In addition, it is disposed on the outer circumference of the stirring body, it may further include a screw blade protruding at least one or more.

In addition, the stirring device is located in the inner center of the chamber body, the stirring tube having a transfer space inward, is located inside the transfer space, through the transfer space to move the circulation aggregate in the neutralization space inside It may include a stirring screw to be transferred to, and a stirring motor which is disposed on one side of the chamber body, is connected to rotate the stirring screw, the stirring screw is rotated by the operation of the stirring motor to the neutralization space While the circulating aggregate is injected into the circulating aggregate, the circulating aggregate located in the neutralization space may be circulated by being transferred through the stirring tube.

And, the dewatering device is connected to the discharge port, the dehydration body having a dehydration inlet to which the neutralized circulating aggregate is introduced, having a dehydration space therein, and having a dehydration outlet for discharging the circulating aggregate dehydrated to the other side Located in the dehydration space, the inclined to move the circulation aggregate from the inlet toward the outlet, the dewatering net to dehydrate the carbonated water injected into the circulation aggregate, and the dehydration body and the carbonated water tank And carbonated water recovery pipes for recovering the carbonated water dehydrated through the dehydration network to the carbonated water tank.

In addition, it is located on one side of the dewatering body, connected to the dehydration outlet, and may further comprise a discharge reservoir having an aggregate outlet for the stored circulation aggregate is discharged, the discharge reservoir is the recycled aggregate is finished circulation Injected and stored from the dewatering outlet, it may be discharged to the aggregate outlet.

In addition, it may be located on one side of the dehydration body, it may be further provided with a sludge removal apparatus connected to the carbonated water recovery pipe to remove sludge in the carbonated water.

In addition, the neutralizing device of the circulating aggregate using the accelerated neutralization reaction according to another embodiment of the present invention has a neutralization space in which the circulating aggregate is accommodated therein, and has an inlet through which the circulating aggregate is input at one side, and the circulating aggregate is discharged at the other side. A chamber body having a discharge port, which is disposed on one side of the chamber body, the input body for opening and closing the inlet, disposed on the other side of the chamber body, the discharge body for opening and closing the outlet, disposed in the center of the chamber body And a chamber rotating shaft which is fixed to rotate together with the chamber body, and disposed on both sides of the chamber body, and a fixed frame having a bearing in which the chamber rotating shaft is rotatably supported in the center, and installed on both sides of the fixing frame. The support frame is supported, the fixing frame, the support Is installed on one side of the frame, the rotary motor is connected to rotate the chamber rotation shaft, is connected to one side of the chamber body, carbonated water injection device for injecting carbonated water into the neutralization space, and the other side of the chamber body It is disposed in, and the dehydration device for dewatering the circulating aggregate discharged in connection with the discharge port, The carbonated water injection device is a carbonated water mixed with carbon dioxide gas and water to cause the neutralization reaction with the circulating aggregate in the neutralization space Can be sprayed with

And, it is disposed inside the chamber body, it may further include a heater for heating the neutralization space.

In addition, the inner circumferential surface of the chamber body may further include at least one locking blade protruding toward the center of the neutralization space, the locking blade is installed so that the circulation aggregate is caught when the chamber body is rotated Can be.

In addition, the carbonated water injection device is located on one side of the chamber body, the carbonated water tank is supplied to the carbon dioxide gas supply pipe and the water supply pipe is supplied with the carbon dioxide gas is mixed with carbonic acid gas and water, inside the neutralization space Located, at least one injection nozzle connected to the fixed frame, is inserted into one side of the fixed frame, the carbonated water supply pipe connecting the injection nozzle and the carbonated water tank, and is connected to one side of the carbonated water supply pipe, It may include a supply valve for controlling the quantity of the carbonated water supplied from the carbonated water tank, the carbonated water supply pipe is connected to the injection nozzle in the state that the chamber body is stopped, the carbonated water supplied from the carbonated water tank to the chamber Can be sprayed into the body.

And, the dewatering device is connected to the outlet, the dewatering body having a dewatering inlet for the neutralized circulating aggregate is introduced into one side, has a dehydration space therein, and the dewatering outlet for the dehydrated circulating aggregate is discharged to the other side Located in the dehydration space, the inclined to move the circulation aggregate from the inlet toward the outlet, the dewatering net to dehydrate the carbonated water injected into the circulation aggregate, and the dehydration body and the carbonated water tank And carbonated water recovery pipes for recovering the carbonated water dehydrated through the dehydration network to the carbonated water tank.

In addition, it is located on one side of the dewatering body, and connected to the dehydration outlet, and may further comprise a discharge reservoir having an aggregate outlet for discharging the recycled aggregate stored on the other side, the discharge reservoir is the circulation finished dehydration Aggregate may be injected and stored from the dewatering outlet and discharged to the aggregate outlet.

In addition, it is located on one side of the dehydration body, it may be further connected to the carbonated water recovery pipe may further include a sludge removal apparatus for removing sludge inside the carbonated water.

In addition, the neutralizing method of the circulating aggregate using the accelerated neutralization reaction according to an embodiment of the present invention is a step of introducing the circulating aggregate into the inlet of the chamber body, carbon dioxide gas and water is supplied to the carbonated water tank so that carbon dioxide gas and water mixed Generating a carbon dioxide water supplied to the chamber body into which the circulating aggregate is injected and spraying the circulating aggregate through a spray nozzle; and reacting with the carbon dioxide dissolved in the carbonated water while stirring the circulating aggregate to which the carbonated water is applied. Neutralizing, dehydrating to remove the carbonated water of the neutralized circulating aggregate, and dewatering the circulating aggregate to finish neutralization.

In addition, in the neutralizing step, the chamber body is provided with a heater, the heater can be heated to a temperature at which the neutralization of the circulation aggregate is promoted by the operation of the heater, the heating temperature can be maintained.

According to an embodiment of the present invention, carbonated water mixed with carbonic acid gas and water is injected, and a strong alkaline circulating aggregate is introduced into a chamber body capable of stirring the circulating aggregate, and a neutralization process is performed to stir while the carbonated water penetrates into the circulating aggregate. There is an advantage to improve the productivity as it is promoted so that the neutralization reaction proceeds quickly.

In addition, carbonated water causing a neutralization reaction with the circulating aggregate contains a large amount of carbon dioxide, and carbon dioxide is stored in the circulating aggregate in the form of calcium carbonate through a neutralization reaction, thereby improving the utilization of carbon dioxide, and carbon dioxide is calcium carbonate It is used in the form stored in the to reduce the carbon dioxide causing the warming phenomenon has the advantage of improving the environmental pollution.

In addition, the calcium hydroxide of the circulating aggregates reacts with carbon dioxide to generate calcium carbonate and water, which are neutral substances, thereby neutralizing strongly alkaline circulating aggregates, but do not produce pollutants.

In addition, the carbonated water sprayed to be neutralized in the circulating aggregate is ionized while being in contact with the circulating aggregate, and is neutralized by combining each ionized element with each other, thereby reducing the neutralization time.

In addition, the circulating aggregate is in contact with the carbonated water, the water penetrates into the pores by the capillary phenomenon, and as the calcium hydroxide is converted to the bulky calcium carbonate by the neutralization reaction, the pores are filled to increase the density of the aggregate, and the filling of the pores. As the external moisture is not absorbed, the absorption rate is lowered.

In addition, the inside of the chamber in which the circulating aggregate is neutralized is provided with a heating device for heating and maintaining at an optimal temperature to promote neutralization, thereby providing an effect of promoting neutralization.

1 is a perspective view showing an apparatus for neutralizing circulating aggregate using an accelerated neutralization reaction according to a first embodiment of the present invention.

FIG. 2 is a schematic view showing a state of use of the neutralizing device of the circulating aggregate using the accelerated neutralization reaction of FIG. 1. FIG.

Figure 3 is a perspective view showing a neutralizing device of the circulating aggregate using the accelerated neutralization reaction according to a second embodiment of the present invention.

Figure 4 is a schematic diagram showing the state of use of the neutralizing device of the circulating aggregate using the accelerated neutralization reaction of FIG.

5 is a perspective view showing an apparatus for neutralizing circulating aggregate using the accelerated neutralization reaction according to the third embodiment of the present invention.

FIG. 6 is a front schematic view showing a state of use of the neutralizing device for circulating aggregate using the accelerated neutralization reaction of FIG. 5; FIG.

7 is a schematic side view illustrating a state of use of the neutralizing device of the circulating aggregate using the accelerated neutralization reaction of FIG. 5.

8 is a process chart showing the neutralization method of the circulating aggregate using the accelerated neutralization reaction according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

100: neutralizing device 110: chamber

111 chamber chamber 112 neutralization space

113: inlet 114: inlet body

115: outlet 116: discharge body

117: heater 118: hanging wings

120: stirring device 121: stirring rod

122: screw blade 123: stirring motor

124: stirring tube 125: transfer space

126: stirring screw 130: chamber rotating part

131: chamber rotation axis 132: fixed frame

133: bearing 134: support frame

135: rotating motor 136: through hole

140: carbonated water injection device 141: carbonated water tank

142: carbon dioxide gas supply pipe 143: water supply pipe

144: carbonated water supply pipe 145: spray nozzle

146: supply valve 150: dewatering device

151: dewatering body 152: dewatering inlet

153: dewatering space 154: dewatering outlet

155: dehydration network 156: carbonated water recovery pipe

157: discharge reservoir 158: aggregate discharge port

159: sludge removal device

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Like parts are designated by like reference numerals throughout the specification.

Then, the neutralizing device of the circulating aggregate using the accelerated neutralization reaction according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

1 is a perspective view showing a neutralizing device of the circulating aggregate using the accelerated neutralization reaction according to the first embodiment of the present invention, Figure 2 is a schematic diagram showing a state of use of the neutralizing device of the circulating aggregate using the accelerated neutralization reaction of FIG. .

1 and 2, the neutralizing device 100 of the circulating aggregate using the accelerated neutralization reaction according to the first embodiment of the present invention includes a chamber 110, a stirring device 120, a carbonated water injection device 140, and And a dewatering device 150.

The chamber 110 includes a chamber body 111, an inlet body 114, an outlet body 116, and a heater 117 in which the circulation aggregate 1 is neutralized. The chamber body 111 has a neutralization space 112 in which the circulation aggregate 1 is stored. One side of the chamber body 111 is penetrated with the neutralization space 112, the inlet 113 for the circulation aggregate 1 is formed. The other side of the chamber body 111 is penetrated with the neutralization space 112, a discharge port 115 through which the circulation aggregate 1 is discharged. In the chamber body 111, the circulation aggregate 1 is introduced into the inlet 113 and stored in the neutralization space 112. The stored circulation aggregate 1 is neutralized in the neutralization space 112. After being neutralized, the circulation aggregate 1 is discharged from the chamber body 111 through the outlet 115.

Here, the chamber 110 in this specification has a form in which the circular aggregate 1 can be supplied and discharged in a horizontal direction in a rectangular shape, but for convenience of description. That is, the chamber 110 may be introduced and discharged to the circulation aggregate 1, and includes all conventional forms as long as it has a space therein. Therefore, the shape of the chamber 110 may be cylindrical, tetrahedral, or the like, and a form in which the circulation aggregate 1 may be supplied and discharged in a vertical, horizontal, or inclined direction may be used.

The inlet body 114 is disposed at one side of the inlet 113, and can open and close the inlet 113. The input body 114 opens the input port 113 at the time of input of the circulation aggregate 1. The circulation aggregate 1 is introduced into the open inlet 113. The inlet port 113 which finishes the input of the circulation aggregate 1 is closed by the inlet body 114.

Here, the input body 114 in the present specification is formed in a plate shape that can block the input port 113. This is for convenience of description. That is, the injection body 114 includes all the usual means that can open and close the injection port 113. Therefore, the inlet body 114 may include all of the usual means for opening and closing the inlet 113, such as opening and closing valve, opening and closing lid, and opening and closing cover.

Discharge body 116 is disposed on one side of the discharge port 115, it can open and close the discharge port (115). The discharge body 116 is closed during the input and neutralization process of the circulation aggregate 1. The discharge body 116 is prevented from being discharged through the discharge port 115 by closing the discharge port 115 when the circulation aggregate 1 is injected. After the neutralization process of the circulating aggregate 1, the discharge body 116 is operated to open the outlet 115 so that the circulating aggregate 1 is discharged. Through the open outlet 115, the circulation aggregate 1, which has been neutralized, is discharged.

Here, the discharge body 116 in the present specification is formed in a plate shape that can block the discharge port 115. This is for convenience of description. That is, the discharge body 116 includes all conventional means capable of opening and closing the discharge port 115. Therefore, the discharge body 116 may be used, such as opening and closing valve, opening and closing lid, and opening and closing cover.

The heater 117 is installed inside the chamber body 111. The heater 117 is located inside the neutralization space 112, and heats the interior of the neutralization space 112. The heater 117 heats the interior of the chamber body 111 to a temperature suitable for neutralization. In addition, the heater 117 is operated to maintain a suitable temperature during the neutralization process. Therefore, the heater 117 installed inside the chamber body 111 maintains an optimal temperature during the neutralization process of the circulation aggregate 1 so that neutralization may be promoted.

The stirring device 120 includes a stirring body 121 and a stirring motor 123 for stirring the circulating aggregate 1 introduced into the chamber body 111. The stirring body 121 is located inside the circulation aggregate 1 of the chamber body 111 is introduced. The stirring body 121 stirs the circulation aggregate 1 accommodated by rotation. The circulating aggregate 1 is agitated by the rotation of the stirring body 121 in the neutralization process, and after stirring, is discharged to the discharge port 115 side by the rotation of the stirring body 121. At this time, the stirring body 121 may be performed simultaneously with the action of being crushed at the same time with the stirring of the circulation aggregate (1). At least one screw blade 122 may be formed at an outer circumference of the stirring body 121. The screw blade 122 contacts the circulating aggregate 1 to be stirred to increase the stirring efficiency.

Here, in the present specification, the stirring body 121 optionally uses a screw blade 122, but this is for convenience of description. The stirring body 121 may include all conventional stirring means capable of stirring the circulating aggregate. Therefore, the stirring body 121 may be a screw, a striking rod, and a propeller type stirring means.

The stirring motor 123 is installed at one side of the chamber body 111 and is connected to the stirring body 121. When the stirring motor 123 is operated to rotate the stirring body 121 located inside the chamber body 111. When the stirring body 121 is rotated, the circulation aggregate 1 is stirred. In the state in which the circulation aggregate 1 is stored in the neutralization space 112 and closed, the stirring motor 123 is operated to rotate the stirring body 121. The circulation aggregate 1 is stirred by the rotation of the stirring body 121. After the stirring is completed, the circulation aggregate 1 may be discharged to the discharge port 115 by rotating the stirring body 121 by the operation of the stirring motor 123 in the state in which the discharge port 115 is opened to the discharge body 116. .

The carbonated water injection device 140 includes a carbonated water tank 141 to which carbonated water is supplied, a carbonated water supply pipe 144, an injection nozzle 145, and a supply valve 146. Carbonated water tank 141 is located on one side of the chamber body (111). The carbonated water tank 141 is connected to a carbon dioxide gas supply pipe 142 to which carbon dioxide gas is supplied and a water supply pipe 143 to which water is supplied. The carbonated water tank 141 is supplied with carbon dioxide gas through the carbon dioxide gas supply pipe 142 and with water supplied through the water supply pipe 143. The carbonated water tank 141 mixes the supplied carbon dioxide gas and water. The water in which the carbon dioxide gas is mixed becomes carbonated water containing a large amount of carbon dioxide and is stored in the carbonated water tank 141.

The carbonated water supply pipe 144 has one end connected to the chamber body 111 and the other end connected to the carbonated water tank 141. Carbonated water mixed with carbon dioxide gas and water is supplied to the chamber body 111 through the carbonated water supply pipe 144 connected to the carbonated water tank (141).

At least one spray nozzle 145 is installed inside the chamber body 111. The injection nozzle 145 has a supply side connected to the carbonated water supply pipe 144, and the injection side faces the circulation aggregate 1 housed in the neutralization space 112. The spray nozzle 145 injects the carbonated water supplied from the carbonated water supply pipe 144 toward the circulating aggregate 1. That is, the circulating aggregate 1 is supplied with carbonated water, and a neutralization reaction occurs with carbon dioxide dissolved in the supplied carbonated water. The carbonated water is sprayed in the liquid form, and the neutralization reaction is promoted as the whole contact with the circulating aggregate 1.

The supply valve 146 is connected to one side of the carbonated water supply pipe 144. The supply valve 146 is supplied to the injection nozzle 145 through the carbonated water supply pipe 144 while the supply amount of the carbonated water supplied from the carbonated water tank 141 is adjusted.

The dehydration device 150 includes a dehydration body 151, a dehydration net 155, and a carbonated water recovery tube 156 connected to the chamber body 111 to dehydrate the neutralized circulation aggregate 1. The dewatering body 151 has a dewatering space 153 for dewatering the carbonated water remaining in the circulation aggregate 1 neutralized therein. One side of the dewatering body 151 has a dewatering inlet 152 is connected to the discharge port 115, the neutralized circulation aggregate 1 is introduced. The other side lower portion of the dewatering body 151 is formed with a dewatering outlet 154 through which the dehydrated circulation aggregate 1 is discharged. The dehydration body 151 is introduced into the dehydration inlet 152 is neutralized circulating aggregate (1) while reacting with the carbonated water in the neutralization space (112). The injected aggregate 1 is dehydrated with carbonated water in the dehydration space 153. The dehydrated circulation aggregate 1 is discharged through the dehydration outlet 154.

The dewatering net 155 is installed inside the dewatering body 151. The dewatering net 155 is formed in a net so that carbonated water is drained while the circulation aggregate 1 passes. The dehydration net 155 is discharged to the dehydration outlet 154 while draining the carbonated water of the circulating aggregate 1 introduced from the dehydration inlet 152 to the bottom. That is, the dewatering net 155 is inclined to move the circulating aggregate 1 from the dewatering inlet 152 formed on one side to the dewatering outlet 154 formed on the other side. Therefore, the circulating aggregate 1 introduced into the dehydration inlet 152 passes through the inclined dehydration net 155 and the carbonated water is dehydrated downward, and the dehydrated circulating aggregate 1 is discharged to the dehydration outlet 154.

The carbonated water recovery pipe 156 connects the lower portion of the dehydration body 151 and one side of the carbonated water tank 141. The carbonated water recovery pipe 156 is connected to the lower portion of the dehydration body 151 and the carbonated water dehydrated from the dehydration network 155 is recovered to the carbonated water tank 141.

In addition, located on one side of the dewatering device 150, the discharge reservoir 157 having an aggregate outlet 158 may be further provided. Discharge reservoir 157 is one side is connected to the dehydration outlet 154, and has the aggregate discharge port 158 on the other side. A discharge reservoir 157 may be installed to store the circulation aggregate 1 dehydrated in the dewatering device 150. The discharge reservoir 157 temporarily stores the circulating aggregate 1 and may be omitted as it is selectively used by those skilled in the art.

In addition, the sludge removal apparatus 159 located on the other side of the dewatering device 150 and connected to the carbonated water recovery pipe 156 may be further provided. The sludge removal apparatus 159 removes the sludge contained in the carbonated water at the time of dehydration of the circulation aggregate 1. The sludge removal apparatus 159 finishes the neutralization reaction and removes the sludge remaining in the carbonated water. The sludge removal apparatus 159 will not be described in detail as it may include any conventional apparatus in which sludge may be removed. In addition, the sludge removal apparatus 159 can be omitted that can be selectively used by those skilled in the art.

In addition, the neutralizing device 100 of the circulating aggregate using the accelerated neutralization reaction according to the second embodiment of the present invention will be described with reference to FIGS. 3 and 4.

3 is a perspective view showing a neutralizing device of the circulating aggregate using the accelerated neutralization reaction according to the second embodiment of the present invention, and FIG. 4 is a schematic view showing a state of use of the neutralizing device of the circulating aggregate using the accelerated neutralization reaction of FIG. 3. .

3 and 4, the neutralizing device 100 of the circulating aggregate using the accelerated neutralization reaction according to the second embodiment of the present invention includes a chamber 110, a stirring device 120, a carbonated water injection device 140, And a dewatering device 150. Here, some components of the chamber 110, the carbonated water injection device 140, and the dewatering device 150 and the stirring device 120 may be neutralized device 100 for circulating aggregate using the accelerated neutralization reaction shown in FIGS. 1 and 2. By substantially the same as, the description thereof will be omitted.

The stirring device 120 includes a stirring tube 124, a stirring screw 126, and a stirring motor 123 installed inside the chamber body 111. The stirring tube 124 is installed inside the chamber body 111 and has a transfer space 125 therein. The stirring tube 124 is installed across the neutralization space 112, and both sides thereof are separated from the chamber body 111. That is, the stirring tube 124 may be injected and discharged from the circulation aggregate 1 at intervals separated from both sides. Stirring tube 124 is the circulating aggregate 1 is introduced to one side away, the circulating aggregate 1 is discharged to the other side away, so that the circulating aggregate 1 can be circulated inside the neutralization space (112).

The stirring screw 126 is provided inside the transfer space 125. The stirring screw 126 is rotated inside the transfer space 125. The stirring screw 126 transfers the circulation aggregate 1 introduced to one side to the other side through the transfer space 125. By operating the stirring screw 126, the circulation aggregate 1 introduced into the neutralization space 112 is circulated and stirred. In addition, the stirring screw 126 may crush the circulating aggregate 1 conveyed into the transfer space 125.

The stirring motor 123 is installed at one side of the chamber body 111 and is connected to the stirring screw 126. The stirring motor 123 rotates the stirring screw 126 located in the conveyance space 125. The stirring motor 123 rotates the stirring screw 126 by operation to agitate the circulation aggregate 1 in the neutralization space 112.

In addition, the neutralizing device of the circulating aggregate using the accelerated neutralization reaction according to the third embodiment of the present invention will be described with reference to FIGS. 5 and 6.

FIG. 5 is a perspective view showing a neutralizing device for circulating aggregate using the accelerated neutralization reaction according to the third embodiment of the present invention, and FIG. 6 is a schematic view showing a state of use of the neutralizing device for circulating aggregate using the accelerated neutralization reaction of FIG. 5. .

5 and 6, the neutralizing device 100 of the circulating aggregate using the accelerated neutralization reaction according to the third embodiment of the present invention includes a chamber 110, a chamber rotating part 130, a carbonated water injection device 140, And a dewatering device 150. Here, some components of the dewatering device 150, the chamber 110, and the carbonated water injection device 140 are substantially the same, and thus description thereof will be omitted.

A locking wing 118 may be further provided inside the chamber body 111. The locking wing 118 is installed inside the chamber body 111 and protrudes at least one toward the center of the neutralization space 112. The locking wing 118 protrudes from the inner circumference of the chamber body 111 in the center direction. The locking blade 118 is in contact with the circulation aggregate 1 introduced into the neutralization space 112.

The chamber rotating unit 130 includes a chamber rotating shaft 131, a fixed frame 132, a supporting frame 134, and a rotating motor 135 that are fixed to the center of the chamber body 111. The chamber rotation shaft 131 is inserted into the center of the chamber body 111 and is fixed to the chamber body 111. The chamber rotating shaft 131 penetrates through the center of the chamber body 111 and protrudes to both sides. The chamber rotating shaft 131 is fixed to be rotated together with the chamber body 111.

The fixed frame 132 is inserted at both sides of the chamber rotation shaft 131. A bearing 133 is installed between the fixed frame 132 and the chamber rotation shaft 131. The bearing 133 is supported by the chamber rotating shaft 131 is rotated, it is installed so that the fixed frame 132 is maintained while supporting the chamber rotating shaft 131.

The support frame 134 is fixed to both sides of the fixed frame 132, and supports to be seated on the ground. The support frame 134 is provided on both outer surfaces of the fixed frame 132, and has a through hole 136 to which the chamber rotation shaft 131 is fixed. The support frame 134 is supported by the chamber 110, the chamber rotating shaft 131 fixed to the chamber 110, and the fixed frame 132.

The rotary motor 135 is disposed on one side of the support frame 134 and is connected to the chamber rotation shaft 131. When the rotary motor 135 is operated to rotate the chamber rotating shaft 131 connected. When the chamber rotation shaft 131 is rotated, the fixed chamber body 111 is rotated together. When the chamber body 111 is rotated, the circulation aggregate 1 introduced into the neutralization space 112 is rotated while being stirred. As the chamber body 111 rotates as the at least one catching blade 118 protrudes from the neutralization space 112, the catching blade 118 is caught by the circulation aggregate 1, thereby increasing agitation efficiency.

The spray nozzle 145 is located inside the neutralization space 112 and is installed at the position where the fixed frame 132 is connected. The carbonated water supply pipe 144 is inserted into the fixed frame 132, and one side of the carbonated water supply pipe 144 is connected to the dispersion nozzle 145 while the chamber body 111 is stopped. The other side of the carbonated water supply pipe 144 is connected to the carbonated water tank 141. The carbonated water supplied from the carbonated water tank 141 is injected into the circulation aggregate 1 located inside the neutralization space 112 through the spray nozzle 145 connected in a state where the chamber body 111 is stopped. The circulating aggregate 1, into which the carbonated water is injected, is stirred inside the chamber body 111 to be rotated, and a neutralization reaction occurs. When the neutralization reaction is completed, the rotation of the chamber body 111 is stopped, and the circulating aggregate 1 which is finished with the neutralization process through the outlet 115 by opening the discharge body 116 is discharged. The discharged circulating aggregate 1 is passed through the dewatering device 150 to complete the neutralization process of the neutralized circulating aggregate 1 after dehydration.

In addition, the neutralization method of the circulating aggregate using the accelerated neutralization reaction according to the embodiment of the present invention will be described with reference to FIG. 7.

7 is a process chart showing the neutralization method of the circulating aggregate using the accelerated neutralization reaction according to an embodiment of the present invention.

Referring to Figure 7, the neutralizing method of the circulating aggregate using the accelerated neutralization reaction according to an embodiment of the present invention is a circulating aggregate input step (S1), carbonated water generation step (S2), carbonated water injection step (S3), neutralization step (S4) ), The dehydration step (S5), and the neutralization completion step (S6).

Here, the neutralization method of the circulating aggregate using the accelerated neutralization reaction according to an embodiment of the present invention is neutralized by using the neutralization device 100 of the circulating aggregate using the accelerated neutralization reaction shown in Figs. The method is disclosed.

First, the circulation aggregate input step (S1) is a step of injecting the circulation aggregate (1) in the interior of the chamber body (111). Circulating aggregate (1) collected when shredding in a waste building or waste concrete contains heavy metals and cement inside. The main component of cement consists of silicon dioxide (SiO ₂ ) and calcium oxide (CaO). Concrete structures are constructed by mixing cement with water and aggregate. Among the components of cement, calcium oxide (CaO) reacts with water (H ₂ O) to form calcium hydroxide (Ca (OH) ₂ ). Calcium hydroxide (Ca (OH) ₂ ) is a strong alkaline substance with a pH of 12-13, and when it is buried in soil for use in road foundations, subgrade soils, etc. Soil alkalinization of the soil so that it can not pollute the environment. In particular, a heavy metal component is contained in the circulation aggregate 1. Therefore, the circulation aggregate 1 contains strong alkaline calcium hydroxide and heavy metals which pollute the soil.

As described above, the circulating aggregate 1 containing strongly alkaline calcium hydroxide and heavy metal is introduced into the open inlet 113 of the chamber body 111.

The carbonated water generation step (S2) is a step of producing carbonated water (H ₂ CO ₃ ) by mixing water (H ₂ CO) and carbon dioxide (CO ₂ ) in a carbonated water tank. Carbonated water is produced by mixing the water supplied through the water supply pipe 143 and the carbon dioxide gas supplied through the carbon dioxide gas supply pipe 142 to the carbonated water tank 141 disposed on one side of the chamber body 111.

The carbonated water injection step (S3) is a step of spraying the carbonated water generated in the carbonated water tank 141 to the circulating aggregate 1 introduced into the chamber body 111. Carbonated water generated in the carbonated water tank 141 is supplied to the spray nozzle 145 through the carbonated water supply pipe 144. An injection nozzle 145 located inside the chamber body 111 injects carbonated water to the circulating aggregate 1.

The neutralization step (S4) is a step in which the sprayed carbonated water and the circulating aggregate 1 cause a neutralization reaction, and the contact between the carbonated water and the circulating aggregate 1 is activated by stirring to facilitate the neutralization. Carbonated water is sprayed on the circulating aggregate 1 located in the neutralization space 112. The injected carbonated water reacts with calcium hydroxide in the circulating aggregate 1. Calcium hydroxide elutes to the outside in response to the water of the carbonated water. By the above-mentioned elution, calcium hydroxide (Ca (OH) ₂ ) is decomposed into calcium ions (Ca ²⁺ ) and hydroxide ions (2OH ⁻ ), and carbonated water (H ₂ CO ₃ ) is hydrogen ions (2H ⁺ ) and carbonate ions. Formula 1 decomposed into (CO ₃ ^2- ) is as follows.

^{_{Ca (OH) 2 → Ca 2+}} + 2OH -

H ₂ CO ₃ → 2H ⁺ + CO ₃ ^2-

In this way, each of the ions decomposed by the elution is calcium carbonate (CaCO ₃ ) and water (H ₂ O) as shown in the following formula 2 by mutual bonding.

Ca ²⁺ + CO ₃ ^2- + _{^{2H + + 2OH - → CaCO 3}} + 2H 2 O

Calcium carbonate is calcium carbonate, which is produced as marble, calcite, ore, limestone, chalk, ice tin, clam shell, egg shell, coral, and the like. It is used as various neutralizers such as cement raw materials, calcium oxide raw materials, steelmaking and building materials. In other words, calcium carbonate is a substance that is neutralized enough to be used as a neutralizing agent, so that calcium hydroxide of strong alkali is decomposed by elution by water, and thus calcium carbonate is lowered.

In other words, calcium hydroxide, which is a strong alkaline, having a pH of 12-13, which is difficult to survive, is converted to neutralized calcium carbonate, which is a neutral substance of pH 7.5-10, which does not affect the survival of the organism through neutralization.

At this time, the calcium hydroxide contacted with moisture in the neutralization process is ionized while eluting to the surface of the circulating aggregate 1, and the carbonated water is also ionized to neutralize the ionized carbon dioxide and calcium hydroxide by mutual reaction.

In addition, as the calcium hydroxide is eluted, the circulating aggregate 1 penetrates the carbonated water into the pores of the circulating aggregate 1 by capillary shape, and water is absorbed to the surface in the pores to cause a neutralization reaction.

Calcium hydroxide (Ca (OH) ₂ ) has a molecular weight of 33, a specific gravity of 2.24, and a volume ratio of 33. In comparison, calcium carbonate (CaCO ₃ ) has a molecular weight of 100, a specific gravity of 2.71, and a volume ratio of 36.9. Thus, when calcium hydroxide is converted to calcium carbonate upon neutralization, the volume expands by about 12%.

Carbonated water that penetrates the surface in the voids in the circulation aggregate 1 reacts with calcium hydroxide and is neutralized with calcium carbonate inside the pores, thereby expanding its volume. The expanded calcium carbonate hardens inside and fills the voids. The neutralized circulation aggregate (1) filled with calcium carbonate in the pores is increased in density, the water absorption is reduced. Therefore, the circulating aggregate 1 has a low pH through a neutralization process, an increase in density as the absorption rate decreases, and the quality of the aggregate is improved.

In addition, the heavy metal contained in the circulation aggregate 1 is not leaked to the outside as the pores are blocked, and also prevents the heavy metal from leaking to the outside.

In addition, the stirring blade 123 is operated such that the screw blade 122 located inside the circulating aggregate 1 into which the carbonated water is injected is rotated. When the stirring motor 123 is operated while the stirring body 121 is rotated to agitate the circulation aggregate (1). As the circulating aggregate 1 is stirred, the surface in contact with the carbonated water is increased, and the entire surface of the circulating aggregate 1 penetrates the carbonated water to promote the neutralization reaction.

The stirring device 120 applies the first embodiment of the present specification. This is for convenience of description and may include any device capable of stirring the circulation aggregate 1. Therefore, it will be apparent to those skilled in the art that the apparatus to be agitated for neutralizing the circulating aggregate 1 is within the scope of the present specification even if it has a modified and improved form.

In addition, in the neutralization step S4, the heater 117 installed in the chamber body 111 may be operated to be heated to a temperature at which neutralization may be promoted. The heater 117 is heated to an optimal temperature that is neutralized inside the chamber body 111 and operates to maintain the heated temperature.

The dehydration step (S5) is a step in which the neutralized circulating aggregate 1 is dehydrated via the dewatering device 150. The circulating aggregate 1 is injected into one side of the dewatering body 151 after finishing neutralization. The injected circulation aggregate 1 is dewatered via the dehydration net 155. The carbonated water dehydrated in the dehydration network 155 is recovered to the carbonated water tank 141 through the carbonated water recovery pipe 156. The sludge removal apparatus 159 may be installed in the carbonated water recovery pipe 156. The sludge removal apparatus 159 is to be recovered to the tank body 111 in a state in which sludge, which is an impurity remaining inside, in the recovered carbonated water is removed.

The neutralization completion step (S6) is a step in which the dehydrated circulation aggregate 1 is discharged from the dewatering device 150 to complete the neutralization process. The neutralized circulating aggregate 1 is dehydrated in the dehydration apparatus, and is discharged through the dehydration outlet 154 after dehydration to complete the neutralization process. At this time, the discharge reservoir 157 is installed to one side of the dewatering device 150 may be stored after dehydration. The neutralized circulating aggregate 1 has a neutralized aggregate of pH 7.5-10. In addition, as the calcium hydroxide of the circulating aggregate 1 introduced is neutralized with bulky calcium carbonate, the density is increased, the absorption rate is lowered, and the quality of the aggregate is improved.

Here, the neutralizing method of the circulating aggregate using the accelerated neutralization reaction according to the embodiment of the present invention discloses a method of neutralizing the circulating aggregate using the neutralizing device of the circulating aggregate using the accelerated neutralization reaction shown in FIGS. 1 and 2. This is for convenience of description. That is, the neutralizing device of the circulating aggregate using the accelerated neutralization reaction according to the first to third embodiments can be used. In addition, any of the conventional apparatuses applied to the neutralization method of the circulating aggregate using the accelerated neutralization reaction can be used. Therefore, according to the neutralization method of the circulating aggregate using the accelerated neutralization reaction, if one device is used or multiple devices are combined to have the same effect to achieve the same purpose, those skilled in the art will fall within the scope of the present specification. Self-explanatory

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (18)

A chamber body having an inlet through which circulating aggregate is introduced, having a neutralization space in which the circulating aggregate is received, and having an outlet for discharging the circulating aggregate on the other side; Is disposed on one side of the chamber body, the input body for opening and closing the inlet, Is disposed on the other side of the chamber body, the discharge body for opening and closing the outlet, A stirring device which is installed in the chamber body and stirs the circulation aggregate located inside the neutralization space, Is connected to one side of the chamber body, the carbonated water injection device for injecting carbonated water into the neutralization space, and Is disposed on the other side of the chamber body, the dewatering device for dewatering the circulation aggregate discharged in connection with the outlet Including; The carbonated water spraying device may spray the carbonated water mixed with carbonic acid gas and water to the neutralization space so that the neutralized reaction with the circulation aggregate, The stirring device is Located in the inner center of the chamber body, the stirring tube having a transport space inward, Located in the interior of the transfer space, the stirring screw for transferring the circulation aggregate to move in the neutralization space through the transfer space, and A stirring motor disposed on one side of the chamber body and connected to rotate the stirring screw; Including; The stirring screw is rotated by the operation of the stirring motor and the circulation aggregate introduced into the neutralization space is transported through the stirring tube while being stirred so that the circulation aggregate located inside the neutralization space can be circulated. Neutralization apparatus of circulating aggregate using accelerated neutralization reaction. The method of claim 1, The neutralization device of the circulation aggregate using the accelerated neutralization reaction disposed inside the chamber body, further comprising a heater for heating the neutralization space. The method of claim 1, The carbonated water injection device Located in one side of the chamber body, the carbonated water tank is connected to the carbon dioxide gas supply pipe for supplying carbon dioxide gas and the water supply pipe for supplying water is mixed with the carbon dioxide gas and water, Located in the chamber body, the injection nozzle for injecting carbonated water to the circulation aggregate, A carbonated water supply pipe connecting the carbonated water tank and the injection nozzle, and supplying the mixed carbonated water in the carbonated water tank to the injection nozzle, and A supply valve is connected to one side of the carbonated water supply pipe, the quantity of the carbonated water supplied from the carbonated water tank is controlled Neutralization apparatus of the circulating aggregate using the accelerated neutralization reaction comprising a. delete delete delete The method of claim 1, The dewatering device is A dewatering body connected to the outlet and having a dehydration inlet through which the neutralized circulating aggregate is introduced, having a dehydration space therein, and having a dehydration outlet through which dehydrated circulating aggregate is discharged to the other side; A dehydration network located inside the dewatering space and inclined to move the circulating aggregate introduced from the inlet toward the outlet, for dehydrating the carbonated water injected into the circulating aggregate; and A carbonated water recovery pipe connecting the dewatering body and the carbonated water tank and recovering the carbonated water dehydrated through the dehydration network to the carbonated water tank. Neutralization apparatus of circulating aggregate using accelerated neutralization reaction comprising a. The method of claim 7, wherein Located on one side of the dewatering body, and further connected to the dewatering outlet, and further comprising a discharge reservoir having an aggregate outlet for discharged the stored circulation aggregate, The discharge reservoir is stored in the circulating aggregate after the dehydration is input from the dewatering discharge port, can be discharged to the aggregate discharge port Neutralization apparatus of circulating aggregate using accelerated neutralization reaction. The method of claim 7, wherein Located on one side of the dewatering body, the neutralization device of the circulating aggregate using the accelerated neutralization reaction further comprises a sludge removal device connected to the carbonated water recovery pipe to remove sludge in the carbonated water. delete delete delete delete delete delete delete delete delete