KR101109759B1 - Apparatus for drying sludge - Google Patents

Abstract

The present invention relates to a sludge drying apparatus, the sludge is first dried by the hot air supply means 113 and the heater 112 in the hot air chamber 110 is introduced into the first scattering chamber 120, the sludge is introduced The sludge is transported by the transfer screw 121 while being dried and scattered at the same time by the strong hot air supplied from the main scattering means 122, wherein the sludge is disposed between the transfer screw 121 and the transfer screw 121. It is continuously scattered upward by the lower scattering means 123 and dried secondly and flows into the second scattering chamber 130, and the introduced sludge is dried and scattered by the scattering means 132 and hot air supply means 133. Sludge accumulated in the conveyor belt 131 by the hot air supplied from the) is continuously dried in the third stage during the transfer, and introduced into the discharge chamber 140, the introduced sludge is caught and filtered by the mesh conveyor belt 142 The sludge is conveyed to the conveyor belt 141 installed on the lower side of the mesh conveyor belt 142, and the sludge not filtered from the mesh conveyor belt 142 is dried and filtered while being scattered again by the scattering means 145. At the same time to be completely dried by the hot air supply means 143, to dry while scattering the sludge using high temperature hot steam to maximize the drying efficiency.

Sludge, dry

Description

Sludge Dryer {Apparatus for drying sludge}

The present invention relates to a sludge drying apparatus, and more particularly, to a sludge drying apparatus capable of quickly drying various sludges to dry a large amount of sludge.

Recently, the interest in the treatment of water-containing waste (hereinafter referred to as sludge) among various wastes generated in various fields is increasing.

Such sludges include sewage sludge from sewage water treatment facilities, humid waste generated from industrial sites such as food or paper mills, food waste generated from homes, and livestock manure from livestock farms. Since such sludge typically contains up to 80% of water, it is excluded from the general treatment of incineration plants, and treatment through landfill is common.

However, the treatment of sludge through landfill has caused problems due to secondary pollution such as groundwater due to leachate, weakening of the ground, and securing landfill area. Therefore, an alternative technology is required.

Therefore, a number of technologies for sludge treatment have been developed and patented as a way to solve the above problems, such a patented technology "multistage screw dryer" of the Republic of Korea Patent Publication No. 2002-0005917 A plurality of installed drying cylinders are arranged side by side adjacent to each other, and the drying object injected into the uppermost drying cylinder is continuously transferred from top to bottom and discharged through the lowermost drying cylinder, and injected into the lowermost drying cylinder. It is proposed a sludge drying apparatus exhausted through the top drying cylinder so that hot air is continuously transferred from the bottom to the top.

In addition, Korean Patent Publication No. 10-0407828, "Moisture Drying Method Using Infrared and High Frequency," installs a conveyor belt rotatably in a drying container, and installs a magnet on the inlet side of the conveyor belt to inject sludge or food waste. Remove the metallic foreign matter contained in the inside of the conveyor belt to install the positive and negative plates of the high-frequency device to the high temperature heat to the sludge or food waste, and ventilator to discharge the steam generated by heating drying vessel A sludge drying method is proposed in which an infrared drying furnace is installed at the outlet and irradiated with infrared light to pass through the sludge or food waste.

In addition, "Food Waste and Shaft Drying Device" of Korean Patent Laid-Open Publication No. 2003-0079397 has a plurality of spaces in a winding shape, and a rotary wing having a protruding jaw for rotating the food wastes into the space, and the second fixing. A sludge drying apparatus comprising a heater plate fixed to the frame and having respective holes formed at the center and one side thereof, and a heater device fixed to the first fixed frame and supporting the near-infrared lamp that radiates radiant heat is proposed.

As described above, the techniques proposed for treating sludge in a conventional drying method suggest an apparatus and method for carrying out a drying process using various types of heat sources while transferring sludge using a conveyor belt or a screw.

However, such a prior art has a low thermal efficiency, high cost for drying the sludge, takes a lot of time compared to the incineration treatment method, and has insufficient measures for dust or noise generated during the treatment of the sludge. For example, "Multistage Screw Dryer" of Korean Unexamined Patent Publication No. 2002-0005917 is composed of a screw in multiple stages, and drying the sludge using hot air (or heating by induction and waste heat of incinerator as a heat source). Although the technique is proposed, such a method takes a lot of time to dry the sludge containing less than 60% moisture, there is a problem that the treatment efficiency is low and the maintenance cost is high because the thermal efficiency is not high.

In addition, the Republic of Korea Patent Publication No. 2003-0079397 "Food Waste and Shaft Drying Device" by installing the rotary blades in the processing device of the laminated structure so that the sludge is transferred from the upper layer to the lower layer, radiant heat and Sludge drying technology is proposed by the heat of reflection, but this method is complicated in the configuration of the apparatus, the sludge should be crushed separately, and the sludge is dried in a stacked state, so the throughput of the sludge is limited, as in the aforementioned apparatus. There is a problem of low processing efficiency and high maintenance cost.

In addition, the Republic of Korea Patent Publication No. 10-0407828 "moisture drying method using infrared and high frequency" is intended to dry by using a high frequency while conveying using a conveyor belt, and to dry by irradiating infrared rays from the exit side, but Sludge drying apparatus and method is a sludge pulverization is made separately, as in the above-described example, because the sludge is dried in a stacked state, the throughput of the sludge is limited, there is also a problem of low treatment efficiency and high maintenance cost.

As described above, the conventional sludge drying method and apparatus have low thermal efficiency and low practicality, and in particular, when the screw method is applied, the sludge is almost impossible to transport, and the sludge that is disposed inside is almost never dried.

That is, the sludge drying apparatus using the screw method generally expects the action of crushing and transporting the sludge through the screw, but the pulverization action is hardly expected, and the surface of the sludge to be transported is dried but the sludge inside is not dried. After all, there is a problem that the screw is overloaded.

Accordingly, an object of the present invention is to provide a sludge drying apparatus for maximizing the drying efficiency by drying while scattering sludge using high temperature heat steam.

Another object of the present invention is to provide a sludge drying apparatus that can dry a large amount of sludge quickly.

Another object of the present invention is to provide a sludge drying apparatus that allows to quickly dry various types of sludge.

The sludge drying apparatus of the present invention for achieving the above object is to install a conveyor belt for transporting the sludge horizontally in the lower side of the inside and to form a heater facing the conveyor belt at the top and to form a hot air supply means on one side to heat and heat The hot air chamber for drying the sludge and the sludge dried in the hot air chamber are sequentially scattered and dried, but a plurality of transfer screws for transporting the sludge transversely are installed inside the lower side, and a plurality of main scattering means are provided at one side of the sludge inlet. Sludge flowing into the sludge is installed by hot air and a lower scattering means is formed in the lower portion of the connected conveying screw to continuously scatter and dry the first scattering chamber during the transporting process, while the sludge dried in the first scattering chamber is scattered. Conveyor belt to dry sludge in the hot air And a second scattering chamber configured to scatter sludge flowing in by installing scattering means at a sludge inflow portion and to supply hot hot air therein by forming a hot wind supply means at one side, and the sludge dried in the second scattering chamber. Selecting and scattering and drying with hot air, install conveyor belt for transporting sludge horizontally in the lower side, install mesh conveyor belt inclined on the conveyor belt and form scattering means at the lower side of mesh conveyor belt. It is a basic characteristic on configuration.

In the sludge drying apparatus of the present invention according to the above configuration, the sludge is first dried by the hot air supply means and the heater in the hot air chamber and introduced into the first scattering chamber, and the introduced sludge is supplied by the strong hot air supplied from the main scattering means. As it flows in, it is dried while being scattered and the sludge is transported by this screw. At this time, it is continuously scattered upward by the lower scattering means located between the feed screw and the feed screw, and then dried secondly and flowed into the second scatter chamber. The sludge that is introduced is scattered by the scattering means and dried, and the sludge accumulated on the conveyor belt is continuously dried in the third stage during transportation by the hot air supplied from the hot wind supply means, and the sludge is introduced into the discharge chamber. The sludge caught and filtered by the conveyor belt is installed on the lower side of the mesh conveyor belt. Sludge which is conveyed to the bayer belt and is not filtered out of the mesh conveyor belt is transported and scattered again by the scattering means, dried and filtered, and is completely dried by the hot wind supply means. The sludge is scattered by using hot steam. By drying while maximizing the drying efficiency, this is to allow a large amount of sludge to dry quickly.

When explaining the specific embodiment of the sludge drying apparatus of the present invention according to the above configuration in more detail as follows.

1 is a front view showing the overall combined state of the sludge drying apparatus according to the present invention, Figure 2 is a detailed view showing the sludge primary scattering portion of the sludge drying apparatus according to the present invention, Figure 3 is a sludge drying according to the present invention Figure 4 is a detailed view showing the sludge secondary scattering portion of the device, Figure 4 is a detailed view showing the sludge third scattering portion of the sludge drying apparatus according to the present invention, Figure 5 is a cross-sectional view showing a sludge drying apparatus according to the present invention.

1 to 5, the sludge drying apparatus 100 of the present invention is the hot air chamber 110 for drying the sludge by heating heat and hot air, and the sludge dried in the hot air chamber 110 in sequence Dry in the first flying chamber 120, the second flying chamber 130 to dry with hot air while scattering the sludge dried in the first flying chamber 120, and the second flying chamber 130 It consists of a discharge chamber 140 to separate the sludge is scattered and dried with hot air.

The hot air chamber 110 has a conveyor belt 111 for transporting sludge horizontally in the lower side of the inner side, and forms a heater 112 facing the conveyor belt 111 on the upper side, and hot air supply means 113 on one side. It is formed to supply high temperature hot air to the inside.

Here, the sludge inlet 115 is formed in the upper portion of the hot wind supply means 113, and the hot air outlet 114 is formed in the upper portion of the other side.

The first scattering chamber 120 is installed by connecting a plurality of transfer screws 121 for transporting sludge horizontally to the lower side inside, and installed by installing the main scattering means 122 at a lower side of the sludge inlet 125. Try to scatter the sludge.

Here, the guide plate 126 is formed in the first scattering chamber 120 to limit the distance of scattered sludge.

In addition, the lower scattering means 123 is formed in the lower portion between the connected transfer screw 121 to be continuously scattered by the main scattering means 122 to dry the sludge in the transfer process.

The second scattering chamber 130 has a conveyor belt 131 for transporting sludge horizontally in the lower side of the inner side and scattering means 132 is installed at the lower side of the sludge inlet 135 to scatter the sludge introduced. do.

Here, the guide plate 136 is formed in the second scattering chamber 130 to limit the distance of scattered sludge.

Further, the hot air supply means 133 is formed on one side of the second scattering chamber 130 to supply the hot air to the inside.

Here, the hot air outlet 114 is formed on the other side of the hot air supply means 133.

The discharge chamber 140 is installed in the conveyor belt 141 for transporting the sludge horizontally in the lower side and the mesh conveyor belt 142 is installed to be inclined on the conveyor belt and scattering means on the lower side of the mesh conveyor belt 142. A hot air supply means 143 is formed on one side to form a hot air supply means 143 to supply hot hot air therein, and a hot air outlet 144 is formed on the other side of the hot air supply means 143.

In addition, the scattering means 145 is formed at one or more points past the center of the mesh conveyor belt 142 so that only the sludge that was not dried out of the sludge flowing into the sludge inlet 146 is scattered to dry.

Referring to the operation of the present invention as follows.

First, when the sludge is introduced into the hot air chamber 110, the sludge is first dried by the hot air supply unit 113 and the heater 112 and then transferred to the conveyor belt 111.

The sludge firstly dried in the hot air chamber 110 flows into the first scattering chamber 120, and the introduced sludge is dried and scattered while being introduced and scattered at the same time by the strong hot air supplied from the main scattering means 122. Is guided by the guide plate 126 is stacked on the transfer screw 121.

Here, the sludge is conveyed by the conveying screw 121. At this time, the sludge is continuously scattered upward by the lower scattering means 123 located between the conveying screw 121 and the conveying screw 121, and is conveyed while being dried.

In particular, the drying efficiency is greatly improved since the sludge is dried while scattering.

The sludge dried secondary while flying in the first scattering chamber 120 flows into the second scattering chamber 130, and the introduced sludge is dried and scattered by the scattering means 132 and at the same time in the hot air supply means 133. The sludge accumulated on the conveyor belt 131 by the supplied hot air is continuously dried during transportation.

The sludge dried third in the second scattering chamber 130 flows into the discharge chamber 140, and the introduced sludge is caught by the mesh conveyor belt 142 and the filtered sludge is installed below the mesh conveyor belt 142. It is transferred to the conveyor belt (141).

Here, the sludge which is not filtered out of the mesh conveyor belt 142 is dried by the scattering means 145 while being transported and filtered and dried by the hot air supply means 143.

1 is a front view showing the overall combined state of the sludge drying apparatus according to the present invention.

Figure 2 is a detailed view showing the sludge primary scattering portion of the sludge drying apparatus according to the present invention.

Figure 3 is a detailed view showing the sludge secondary scattering portion of the sludge drying apparatus according to the present invention.

Figure 4 is a detailed view showing the sludge third scattering portion of the sludge drying apparatus according to the present invention.

5 is a cross-sectional view showing a sludge drying apparatus according to the present invention.

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

100: drying apparatus 110: hot air chamber

111: conveyor belt 112: heater

113: hot air supply means 114: hot air outlet

115: inlet 116: sludge inlet

120: first flying chamber 121: transfer screw

122: main scattering means 123: lower scattering means

125: inlet 126: guide plate

130: second flying chamber 131: conveyor belt

132: scattering means 133: hot air supply means

134: hot air outlet 135: inlet

136: guide plate 140: discharge chamber

141: conveyor belt 142: mesh conveyor belt

143: hot air supply means 144: hot air outlet

145: scattering means 146: inlet

Claims (2)

Installing a conveyor belt 111 for transporting sludge horizontally in the lower side inside, forming a heater 112 opposed to the conveyor belt 111 on the upper side, and forming a hot air supply means 113 on one side to sludge with heating heat and hot air And hot air chamber 110 to dry the, The sludge dried in the hot air chamber 110 is sequentially scattered and dried, but a plurality of transfer screws 121 are transported to the sludge in a transverse direction to the inner lower side, and a plurality of main scattering means 122 are installed at one side of the sludge inflow part. The first flying chamber 120 to scatter the sludge introduced into the hot air by installing a; While the sludge dried in the first scattering chamber 120 is scattered by hot air, a conveyor belt 131 for transporting sludge horizontally is installed on the lower side and scattering means 132 is installed on the sludge inlet. A second scattering chamber 130 that scatters sludge and forms hot air supply means 133 on one side to supply high temperature hot air to the inside, and The sludge dried in the second scattering chamber 130 is selected and scattered and dried by hot air, but a conveyor belt 141 is installed on the lower side of the sludge to transport the sludge horizontally, and the mesh conveyor belt is inclined on the conveyor belt 141. Sludge drying apparatus, characterized in that 142 is installed to form a scattering means 145 on the lower side of the mesh conveyor belt (142). The method of claim 1, The first scattering chamber 120 forms a lower scattering means 123 in the lower part between the connected transfer screw 121 to continuously scatter the dried sludge in the transport process while being scattered by the main scattering means 122. Sludge drying apparatus, characterized in that configured to dry.

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