KR20050096673A - Multiple airtight type carbonization method of sludge - Google Patents

Abstract

The present invention relates to a method for carbonizing sludge produced by anaerobic treatment during treatment of sewage treatment, wastewater treatment, or various livestock manure. The present invention relates to a dehydration aid, deodorant, cone It can be recycled for various purposes such as post auxiliary materials, soil improving agent, snow melting agent and fuel.

Looking at the carbonization method for achieving the above object of the present invention, the primary drum 101 and the secondary drum 103 is installed in multiple stages in the interior of the drying furnace 100, the inside of which is rotatable by its own power The stirrer 102 and the secondary stirrer 104 are installed to dry the sludge supplied through the hopper 106 from the input pipe 107,

The primary drum 101 and the secondary drum 103 are heated through a drying burner 105 installed at the bottom of the drying furnace 100, and a carbonization furnace is formed on the side of the drying furnace 100 by a transfer conveyor 110. Drive gear 205 connected to the (200), the inside of the carbonization furnace 200 is provided with a rotating carbon pipe 201 is provided with a plurality of stirring jaw 203 is intermittently attached to the spiral winding type (205) By the rotating carbonization pipe 201 to be rotated and carbonized,

When the sludge dried in the drying furnace 100 is supplied to the rotary carbide pipe 201 by the metering supply device 202, the carbide carbonized by the stirring jaw 203 therein is a spring discharge type carbide discharge pipe 207 In this case, the carbonized gas generated in the carbonization furnace 200 is burned in the carbonization gas combustion furnace 211 and supplied to a heat source that heats the carbonization furnace 200, and then the 1.2th drying furnace 100 is cooled at a low temperature. After heating, the exhaust gas is blown through the blower 108 to the purifier 109 to be purified and then discharged to the atmosphere.

Description

Multiple airtight type carbonization method of sludge

The present invention relates to a method for carbonizing sludge produced by anaerobic treatment during treatment of sewage treatment, wastewater treatment, or various livestock manure. The present invention relates to a dehydration aid, deodorant, cone It can be recycled for various purposes such as post auxiliary materials, soil improving agent, snow melting agent and fuel.

Generally, sewage treatment, wastewater treatment, or various kinds of livestock manure contain large amounts of sludge. The waste water is generated. In order to separate the sludge from the sludge, the sludge is separated from the water using a centrifugal separator or a concentrator and then disposed of through a proper process.

However, when the sludge from which the water is removed is disposed of, serious pollution of the soil and pollution of the environment occur.

In other words, the sludge generated by the supply of sewage and sludge generated in large quantities during the treatment of livestock manure have become a big problem to secure disposal sites such as landfills, and for this reason, it is recycled as a valuable resource using sludge. Various ways to do this are being sought, and ways to reduce the use of cone posts to green farmland and to use molten slugs of sludge incineration ash for construction materials such as civil engineering are required. There was a problem with low realism.

In addition, the existing sewage treatment plant or waste water treatment plant is moved to a state containing sludge in the water, so the flocculation tank is formed and solidified by administering a flocculant to the flocculation tank. Since the sludge is separated from the sludge, most of the sludge is disposed of or disposed of in landfill or incineration, and thus problems such as odor or soil pollution generated during disposal may cause serious environmental problems.

These sludges cause serious environmental problems when disposed of, but the recycling of these sludges has a great economic ripple effect, so they are not simply satisfied with the treatment and carbonized through appropriate processes, so that fuel, dehydration aids, deodorants, corn post accessories, soil It can be recycled for various purposes such as improver and snow melting agent.

Therefore, the present invention has been made to solve the above problems, and the sludge from which a certain amount of water is removed contains a relatively large amount of organic material, and thus is economically worth recycling, that is, the disposal process of such sludge. They must mainly meet the requirements of being mitigated, sanitarily safe and recyclable as resources.

In this regard, the sludge is dried in stages through a 1.2 stirrer in the course of passing the 1.2 drum, and carbonized through a carbonization furnace in the following process, so that the sludge is reduced to about 90%. Because it is very reasonable and has the same properties as charcoal, it is expected to be used in a wide range of applications such as soil modifiers, snow melts, deodorants, fuels, and dehydration aids. It is aimed at making it possible to expect the extension of disposal sites.

Hereinafter, the structural features for achieving the above object of the present invention will be described with the accompanying drawings.

1 is a layout of a carbonization apparatus showing a preferred embodiment of the present invention, Figure 2 is an enlarged cross-sectional view of the carbonization apparatus of the present invention.

The present invention is to install the primary drum 101 and the secondary drum 103 in the upper and lower two stages inside the drying furnace 100 for drying the dewatered sludge and the primary stirrer 102, each of which has different specifications As the secondary stirrer 104 rotates, the sludge is installed to be dried, and supplies the sludge through the hopper 106 from the input pipe 107 installed at one side, and at the bottom, several sludges for heating the drying furnace 100. A drying burner 105 is installed to dry the sludge in the process of heating the primary drum 101 and the secondary drum 103, and is connected to the side of the drying furnace 100 by a transfer conveyor 110. Install the carbonization furnace 200 to be.

In the carbonization furnace 200, a plurality of agitating jaws 203 are provided with a rotary carbon tube 201 which is attached in a spiral winding shape, and a rotary carbon tube 205 is driven by a driving gear 205 sliding with the driving motor 204. 201) to allow the whole to be rotated and carbonized, and the sludge dried 1.2 times in the drying furnace 100 is supplied through the transfer conveyor 110 to the rotary carbon pipe 201 by the metering supply device 202 Carbide is supplied, and the carbide carbonized by the internal stirring jaw 203 is discharged to the spring-type carbide discharge pipe 207, the carbonized gas which is a volatile component generated when the sludge is carbonized, the moisture and condensation device 208 After the dust and tar are removed, the carbon gas transfer blower 210 is moved to the carbonization gas combustion furnace 211, and the heat source generated from the carbonization gas combustion furnace 211 is supplied to the supply pipe 212 of the carbonization furnace 200. It is continuously supplied through circulation, so energy utilization is It is possible.

In addition, the heat source of the carbonized gas combustion furnace 211 passed through the carbonization furnace 200 heats the carbonization furnace 200, the primary drum 101, and the secondary drum 103, and the primary drum 101. Exhaust gas, such as water vapor generated in the secondary drum 103 and the like, is moved to the purification apparatus 109 through the exhaust gas exhaust blower 108 to be purified, and carbonized sludge in a manner that can be discharged to the atmosphere.

The present invention can be configured as described above is provided with a drying furnace 100 for drying the dewatered sludge of the water content of about 80% around the hopper 106 of the drying furnace 100 through the inlet pipe 107 After supplying and agitating through the primary stirrer 102 inside the primary drum 101, the first dried sludge is first dried by hot air supplied through the lower drying burner 105, and the first dried sludge is the lower secondary drum ( It is supplied to the 103 and dried while stirring by the rotational force of the secondary stirrer 104, the moisture content is dried to about 30%.

The sludge dried 1.2 as described above is in a closed state in a tubular shape inside the carbonization furnace 200 by the amount set by the metering supply device 202 through the hopper of the carbonization furnace 200 on the transfer conveyor 110. It is injected into the rotary carbon pipe 201.

Since a plurality of stirring jaws 203 are attached to the inner winding of the rotary carbonization pipe 201 inside the carbonized furnace 200 sealed with anoxic, the drive gear 205 sliding with the driving motor 204. The entire rotary carbon tube 201 is rotated.

When the rotary carbon tube 201 is rotated as described above, carbonization is performed in an oxygen-free state by the heat source supplied from the carbonization burner 206 while the inside is in an oxygen-free state sealed with the outside.

At this time, the rotary carbon tube 201 is configured in a sealed state to block the supply of oxygen, so that it is maintained in an oxygen-free state, and carbonization is performed without being burned by the heated heat of the carbonization burner 206. By using a plurality of stirring jaw 203 attached to the spiral wound inside, it is possible to produce carbide having uniform physical properties while making the sludge uniform.

Once the carbonization is completed as described above, the carbide is discharged to the outside through the cooling process through the carbide discharge pipe 207 installed on the outer end of the rotary carbon pipe 201 and discharged along the discharge conveyor 209 for the various uses described above. It can be energized.

The drying heat and carbonization heat generated in the drying furnace 100 and the carbonization furnace 200 may be energized by forming a separate line without being discharged into the atmosphere in a discharged state.

That is, the drying heat generated from the drying burner 105 of the drying furnace 100 is supplied to the interior of the primary stirrer 102 and the secondary stirrer 104 to dry the sludge, and the waste heat generated after the sludge is discharged separately. It is discharged to the outside through the blower 108, and is purified while passing through the purifier 109 is discharged to the final atmosphere.

The carbonization heat generated in the carbonization furnace 200 is collected through the water condensation device 208 and moved to the carbonization gas combustion furnace 211 using the carbonization gas transport blower 210 as described above.

The heat of carbonization moved to the carbonization gas combustion furnace 211 is burned once again through a burner and then supplied into the carbonization furnace 200 through a supply pipe 212 to promote carbonization, and a part of the carbonization generated during carbonization The heat source is moved to the drying furnace 100 side to reduce the operation of the drying burner 105 of the drying furnace 100 to increase the efficiency of combustion, as well as the side effect of reducing the consumption of fuel. You can expect

As a result, in the present invention, the rotary carbonization pipe 201 of the carbonization furnace 200 to which the sludge is supplied is kept in a closed state so that the supply of oxygen is blocked, so that combustion is not performed, and carbonization is carried out by drying with heated heat. .

In this process, while the heat is continuously circulated by the drying burner 105 and the carbonization burner 206 supplied through the drying furnace 100 and the carbonization furnace 200, the sludge inside may be driven by a separate power source. As the primary stirrer 102, the secondary stirrer 104, and the rotary carbonization furnace 200 rotate, respectively, are heated at the same time as the stirring and finally carbonization is completed.

Since carbides carbonized by the above process contains high heat, a process of cooling to an appropriate temperature is required at the time of final discharge.

At this time, the cooling may be artificially attached to the cooler, and the spring-type carbide discharge pipe 207 is installed outside the rotary carbon pipe 201 so that when the rotary carbon pipe 201 rotates, the carbide discharge pipe 207 is attached thereto. At the same time as the cooling is rotated is discharged to the discharge conveyor 209 can be collected separately.

Since the sludge carbides have properties similar to charcoal, they may be used in various applications, and the sludge may be appropriately selected from the amount of the sludge generated and the consumption.

Carbide obtained by the present invention can be used as a dehydration aid, deodorant, corn post auxiliary material, soil improver, snow melting agent and various fuels of the sludge dehydrator, so that the existing sludge can be recycled and can be used as a high quality raw material. Recycling of resources, as well as the cost savings of purchasing expensive raw materials, can be expected.

As described above, the present invention can carbonize sludge generated from sewage treatment, wastewater treatment, or livestock manure, and can be used in a wide range of applications such as soil modifiers, snow melts, deodorants, fuels, and dehydration aids. When it is used as a cover agent, incinerated or disposed of, it can be expected to extend the disposal site by reduction of solubility. As a multi-stage closed carbonization method of sludge from wastewater, the expected value is an excellent invention.

1 is a layout of a carbonization method showing a preferred embodiment of the present invention

2 is an enlarged internal configuration diagram of a device used in the carbonization method of the present invention;

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

100: drying furnace 101: primary drum

102: 1st stirrer 103: 2nd drum

104: second stirrer 105: drying burner

106: hopper 107: input pipe

108: exhaust gas exhaust blower 109: purification device

110: conveying conveyor

200: carbonization furnace 201: rotary carbonization pipe

202: Metering device 203: Stirring jaw

204: drive motor 205: drive gear

206: carbonization burner 207: carbide discharge pipe

208: moisture condenser 209: discharge conveyor

210: carbon gas transfer blower 211: carbon gas combustion furnace

212 supply pipe

Claims (1)

The primary drum 101 and the secondary drum 103 are installed in multiple stages in the drying furnace 100, and the primary stirrer 102 and the secondary stirrer 104 are rotatable inside thereof. Allow to dry the sludge supplied through the hopper 106 from the input pipe 107, The primary drum 101 and the secondary drum 103 are heated through a drying burner 105 installed at the bottom of the drying furnace 100, and a carbonization furnace is formed on the side of the drying furnace 100 by a transfer conveyor 110. Drive gear 205 connected to the (200), the inside of the carbonization furnace 200 is provided with a rotating carbon pipe 201 is provided with a plurality of stirring jaw 203 is intermittently attached to the spiral winding type (205) By the rotating carbonization pipe 201 to be rotated and carbonized, When the sludge dried in the drying furnace 100 is supplied to the rotary carbide pipe 201 by the metering supply device 202, the carbide carbonized by the stirring jaw 203 therein is a spring discharge type carbide discharge pipe 207 In this case, the carbonized gas generated in the carbonization furnace 200 is burned in the carbonization gas combustion furnace 211 and supplied to a heat source that heats the carbonization furnace 200, and then the 1.2th drying furnace 100 is cooled at a low temperature. After heating the exhaust gas exhaust blower (108) to the purification device (109), the multi-stage closed carbonization method of the sludge, characterized in that it can be discharged to the atmosphere after purification.