KR200179770Y1 - A vacuum and drying sludge apparatus - Google Patents

Abstract

The vacuum low temperature dryer according to the present invention is a vacuum low temperature drying of various sludges generated in the industrial site to reduce the moisture content contained in the sludge, not only convenient transportation and transportation of dried sludge, but also prevents nimbi phenomenon due to odor. It is possible to prevent problems such as rejection of work by sludge handling workers in the workplace, and to use the dried sludge as industrial fuel to eliminate the risk of explosion due to malodorous gas and to eliminate the causes of process troubles. .

In addition, the sludge treated by the vacuum low temperature dryer of the present invention has a calorific value of 3,000 ~ 6,000 ㎉ / ㎏ can be used stably as industrial fuel, such as thermal power plant, economical, and can be used as fuel in the cement industry as well Ash born as fuel can be used as a cement raw material, and when the livestock wastewater sludge is dried by the vacuum low temperature dryer of the present invention, the livestock wastewater sludge contains a large amount of organic material, which can be suitably used for organic farming compost. will be.

Vacuum low temperature dryer (1) according to the present invention is a sludge supply means for supplying various sludge generated in the wastewater treatment of industrial sites or water and sewage, and the sludge supplied from the sludge supply means 60 ~ 90 ℃ Vacuum agitation means (3) for rapidly and drying the sludge by stirring at a low temperature and vacuum state of the sludge, sludge discharge means (4) installed at the lower end of the vacuum agitation means for discharging the dried sludge, and the vacuum agitation described above. The heat supply means 5 for supplying a heat source into the bezel of the means and the vacuum stirring means are kept in a vacuum state, and the vacuum stirring means deodorizes the moisture and odor gas generated during the rapid and drying of the sludge. It consists of a vacuum and deodorizing means (6) for separating.

Description

A vacuum and drying sludge apparatus

The present invention relates to a vacuum low temperature dryer for drying the sludge in a vacuum and low temperature state, more specifically, to reduce the logistics cost by reducing the volume of the sludge by drying various sludge generated in the industrial field in a vacuum and low temperature state, The present invention relates to a novel vacuum low temperature dryer which makes it easy to transport and recycle sludge by separating and deodorizing moisture and odor generated during vacuum and low temperature drying.

In general, various sludges generated in various industrial sites are mostly collected and treated through sedimentation, aeration, filtration, and dehydration. These sludges have fine particles and various organic substances, and are contained in sludges. One moisture accounts for about 70 to 80% by weight, which has a bad smell and is very difficult to transport.

At present, the most economical method for treating these sludges is about 73% of the total amount of land generated, and about 22% is dumped in the ocean. It is a fact that it is dumping in the sea.

However, because the landfilled sludge contains various heavy metals and organic matters, leachate from these soils continuously generates secondary environmental pollution of the soil, and sludge dumped in the ocean itself is the main culprit of marine pollution. There are many social problems.

In the case of industrial sludge, many heavy metals are contained, so even though the sludge treatment costs are high, the sludge is melted by heat treatment at a high temperature of 1300 ° C. or higher, stabilized or harmed as ash, or stabilized by adding chemicals. Although there are methods of reaction treatment, all of these methods have a disadvantage in that a large amount of dioxin, which is a main cause of air pollution, is removed during incineration, thereby removing a large amount of cost.

In addition, the sludge itself has calories of 3,000 to 6,000 kW / kg in order to make it possible to process large quantities inexpensively and economically. Therefore, from Onota Cement Co., Ltd. in Japan, it is used as fuel and raw material for cement production. Research has been carried out for application.

However, quicklime added more than 30% of the total weight is more expensive than cement, which is uneconomical. In particular, odors are the biggest problem during transportation, and workers are avoiding them during transportation and unloading. The situation was difficult to use normally. In addition, there was no economic feasibility due to the increase of transportation cost by logistics cost and investment cost for installing waste heat dryer.

In addition, a technique of mixing organic dehydrating agents and the like to absorb adhered water and using it as an industrial fuel has been developed in Japan, but many problems such as economical efficiency are still exposed and are not practical.

Therefore, the applicant has developed a method and apparatus for deodorizing and drying sludge such as Korean Patent Application No. 1999-22457 (1999.6.16).

Deodorization and drying method of the sludge as described above and the device to reduce the odor and moisture among the sludge generated in various industrial sites to reduce the volume of the sludge to reduce the logistics cost and eliminate the odor,

The deodorization and drying method of the sludge and the apparatus are rapidly dried while stirring the sludge to be treated at a low temperature and vacuum state of 60 ~ 90 ℃, condensation, absorption of odor gas and water generated during the drying process and then remove odor By deodorizing and drying through means, water content in sludge can be lowered by 20 ~ 50%, and there is no difficulty in transportation and transportation due to deodorization, eliminating the risk of explosion due to odor gas, and removing obstacles in the work process. It can be.

However, in the treatment apparatus embodying the sludge deodorization and drying method described above, the actual design of the sludge deodorization and drying apparatus has been found to be improved in various parts, and the obstacles of the process for each component are generated. There are some problems, such as the need for improvement.

The present invention was developed in order to solve the above problems, the vacuum low temperature dryer of the present invention can dry various types of sludge produced in various industrial sites at low temperature and vacuum state to reduce the logistics cost due to volume reduction of the sludge It is to be able to condense, absorb and remove odor gas and water generated during the sludge treatment process.

In order to achieve the object as described above, the vacuum low temperature drier of the present invention is rapidly dried while stirring the sludge to be treated at a low temperature of 60 to 90 ° C and in a vacuum state, and condensed and absorbed the odor gas and water generated during the drying process. After deodorizing and drying through the odor removal means to reduce the water contained in the sludge by 20 ~ 50%, there is no difficulty in transport and transport due to deodorization, eliminating the explosion risk due to odor gas, obstacles in the work process Can also be removed.

And it is an object of the present invention to provide a vacuum low temperature dryer, which is very suitable for vacuum low temperature drying of sludge and deodorizing odor gas and odor generated in the drying process.

1 is a schematic illustration of a vacuum low temperature dryer showing a preferred embodiment of the present invention

2 is an explanatory view of a vacuum low temperature dryer showing the operating state of FIG.

＊ Code explanations for main parts of the drawings ＊

1: vacuum low temperature dryer 2: sludge supply means

3: vacuum stirring means 4: sludge discharge means

5: heat supply means 6: vacuum and deodorization means

10: storage tank 11, 13, 27, 34: switchgear

12: feeder 14: hopper

16: bezel 17: diaphragm

18: Pressure measuring and regulator 19: Temperature measuring and regulator

20,24,26,36: power supply 21: circulator

22: inner cylinder 23: disperser

25: sludge discharge device 28: carrier

29: coil for heat exchange 30: heat supply device

31: dust collector 32: blower

33,40 connector 35: vacuum pump

37: condenser 38: reservoir

39: deodorizer

In FIG. 1,

Reference numeral 1 denotes a vacuum low temperature dryer showing a preferred embodiment of the present invention, wherein the above-described vacuum low temperature dryer 1 of the present invention supplies a sludge supplying various sludges generated at various industrial sites or water and sewage wastewater treatment. Means (2); Vacuum stirring means (3) for rapidly and drying the sludge by stirring the sludge supplied from the sludge supply means at a low temperature and a vacuum of 60 to 90 ℃; A sludge discharge means (4) installed at the lower end of the vacuum stirring means to discharge the dried sludge; Heat supply means (5) for supplying a heat source to the inside of the vacuum stirring means; A vacuum and deodorization means (6) for maintaining the bezel of the vacuum stirring means in a vacuum state and separating and deodorizing water and malodorous gas generated in the process of rapidly and drying the sludge.

The sludge supply means (2) is a storage tank (10) for storing sludge, a switch 11 for quantitatively supplying the sludge of the storage tank by a predetermined amount, and a transfer device for transporting sludge from the switch ( 12), a hopper 13 for putting the sludge conveyed from the transfer device into the hopper and then sealing it, and a hopper for introducing the sludge passed through the switch into the inner cylinder 22 of the vacuum stirring means 3 ( 14).

The switch 11 may adopt any one selected from, for example, a rotary feeder, a rotary damper, a butterfly valve, an on / off control and a damper that can be opened and closed, and the transfer device 12 includes a screw, Any one selected from the belt, the flow, and the chain conveyor may be adopted, and the switch 13 may be provided with dampers so as to completely close or completely open the transfer pipe.

Therefore, the sludge supply means 2 inputs sludge generated in various industrial sites to the storage tank 10, and sequentially transfers the sludge one by one for the treatment volume, thereby allowing the vacuum stirring means 3 to be passed through the hopper 14. After the transfer to the inner cylinder 22, the switch 13 is closed to completely seal the sludge supply means 2 and the vacuum stirring means 3 to be described later.

In addition, the vacuum stirring means (3) is to store the sludge and to rapidly dry in a low temperature and vacuum state, the bezel (16) separated up and down by the diaphragm 17 of the inner circumferential stop portion, and in the upper end of the bezel A pressure measuring and adjusting device (18) installed at the periphery to measure and adjusting the pressure inside the bezel, and a temperature measuring and controlling device (19) installed adjacent to the pressure measuring and controlling device to measure and control the temperature inside the bezel; It is installed at the upper end of the bezel and blows the heating air flow of the power supply device 20 for supplying power to the circulator described later and the heat exchange coil 29 to be described later while rotating by the power supply device to heat the lower end. At least one circulator 21 for lowering and circulating the air inside the bezel up and down, and an inner cylinder 22 provided at regular intervals inside the bezel, which is the lower end of the circulator. ), A disperser 23 disposed at the lower end of the inner cylinder, which is the stop of the bezel, to disperse the sludge injected while rotating at a constant speed, and a power supply device 24 for supplying power to the disperser.

The bezel 16 may be made of a metal having a corrosion resistance or a metal plate of a general type, and the plurality of circulators 21 are impellers, and the bezel 16 and the inner cylinder 22 are formed by the power supply device 20. The air between them is blown downward, and the disperser 23 is a pad or a screw type.

Therefore, the vacuum stirring means 3 introduces the sludge supplied from the hopper 14 of the sludge supply means 2 into the inner inner cylinder 22 of the bezel 16 to the stop portion of the bezel which is the lower end of the inner cylinder. The sludge is piled up to a certain height on the installed plate 17, and the stacked sludge is rotated up and down by the rotation of the disperser 23 to stir and disperse the sludge to widen the surface area of the sludge, and is also installed on the inner peripheral upper end of the bezel 16. A plurality of circulators 21 blow air between the bezel 16 and the inner cylinder 22 to heat conduction of the heating air of the coil 29 for heat exchange between them to circulate the air inside the bezel 16 up and down. The sludge will be dried.

On the other hand, the sludge discharge means 4 is installed at the lower end of the vacuum stirring means 3 to discharge the dried sludge is installed in the inner peripheral stop plate 17 of the bezel 16 is introduced into the bezel A sludge discharge device 25 for discharging the treated sludge after the sludge is rapidly dried at a low temperature and a vacuum state, a power supply device 26 for driving the sludge discharge device, and a sludge dried under vacuum and low temperature are discharged. The switch 27 is provided in the lower inclined part, and the transporter 28 which carries the sludge dried and installed in the lower part of the said switch is comprised.

The power transmission device 26 is driven by a motor, air, hydraulic machine, and the like to transfer power to the cylinder, gear, lever, etc. The carrier 28 is a certain time inside the bezel (16). Conveyors, such as transport trucks and belt conveyors, can be installed to transport the sludges that have been vacuum and low temperature dried during the process.

The heat supply means 5 for supplying a heat source to the inside of the vacuum stirring means 3 is provided in the form of a coil between the upper inner bezel 16 of the vacuum stirring means 3 and the inner cylinder 22. A heat exchange coil 29 for supplying heat to the bezel 16 by indirect heating, a heat supply device 30 for circulating hot water or gas to the heat exchange coil through a connecting pipe 33, and the heat supply A dust collector 31 for collecting ash contained in the gas when the apparatus circulates gas other than hot water, a blower 32 for discharging the exhaust gas purified by the dust collector to the outside, and the heat supply device 30 described above. It is composed of a switch 34 to maintain the proper temperature at all times by mixing the heat supplied from the circulation with the heat recovered.

Therefore, the heat supply means 5 is used for heat exchange between the heat supplied by the heat supply device 30 is installed between the inner bezel 16 and the inner cylinder 22 of the upper end of the vacuum stirring means 3 through the connecting pipe 33. The heat is conducted by the coil 29, and the conducted heat is transferred to the sludge by the upper circulator 21 to dry the sludge.

At this time, the switch 34 circulates the heat supplied from the heat supply device 30 to the heat exchange coil 29 and then mixes with the heat recovered through the connection pipe 33 to adjust the proper temperature of the heat in the heat exchange coil 29. It is to be supplied in harmony with the heat supply device (30).

On the other hand, the vacuum and deodorizing means (6) of the present invention maintains the vacuum stirring means (3) in a vacuum state, and the vacuum stirring means to deodorize and moisture and volatilized gas generated during the rapid and dry sludge It serves to separate.

The vacuum and deodorizing means (6) is connected to the vacuum stirring means (3) by a connecting tube (40) to make the inside of the bezel (16) of the vacuum stirring means to a vacuum state of a constant pressure and the A power supply unit 36 for supplying power to a vacuum pump, and a condenser 37 for separating the dehydrated water of the sludge sucked into the connecting pipe 40 during the suction vacuum of the vacuum pump and introducing the dewatered water into the reservoir 38. ), And a deodorizer 39 for deodorizing the odor sucked into the connecting pipe 40 during the suction vacuum of the vacuum pump.

Therefore, the vacuum and deodorizing means (6) is the moisture contained in the sludge in the process of drying the sludge while maintaining the inside of the bezel 16 of the vacuum stirring means (3) in order to dry the sludge Odor gas is generated, moisture and odor gas at room temperature or higher generated at this time are sucked into the vacuum and deodorization means 6 through the connection pipe 40, and the condenser 37 installed on the pipe of the connection pipe 40. By collecting water in the reservoir 38 of the lower end, the odor gas is then completely deodorized in the deodorizer 39 to be released to the outside.

The vacuum low temperature dryer (1) of the present invention configured as described above has sludge supply means (2) for supplying various sludges generated at various industrial sites or water and wastewater treatment, and the sludge supplied from the sludge supply means (60 to 90 ° C). Vacuum agitation means (3) for rapidly and drying the sludge by stirring at a low temperature and vacuum state of the sludge, sludge discharge means (4) installed at the lower end of the vacuum agitation means for discharging the dried sludge, and the vacuum agitation described above. The heat supply means 5 for supplying a heat source inside the means and the vacuum stirring means are kept in a vacuum state, and the vacuum stirring means deodorizes and separates water and odor gas generated during the rapid and drying of the sludge. While consisting of a vacuum and deodorizing means (6),

The vacuum low temperature dryer 1 according to the present invention significantly reduces the water content of various sludges generated in the industrial site, so that the transported and transported dried sludges are very convenient, and the odors are prevented due to odor and the sludges in the field It is possible to prevent problems such as a worker's refusal to work, and to use the dried sludge as an industrial fuel to eliminate the risk of explosion due to malodorous gas and to eliminate the problem of process trouble.

In addition, the sludge treated by the vacuum low temperature dryer of the present invention has a calorific value of 3,000 ~ 6,000 ㎉ / ㎏ can be used stably as industrial fuel, such as thermal power plant, economical, and can be used as fuel in the cement industry as well Ashes left on fuel can also be used as cement raw materials.

Looking at the sludge vacuum low temperature treatment process by the vacuum low temperature dryer (1) of the present invention, when the sludge is first introduced into the storage tank 10 configured in the sludge supply means (2), the lower switch 11 is opened and the sludge transfer device Through (12), it is injected into the inner cylinder 22 provided in the inside of the bezel 16 through the hopper 14 by one treatment capacity. At this time, when the sludge is properly injected, the switch 13 is closed and the bezel 16 is closed.

Before the sludge is supplied into the bezel 16 of the vacuum stirring means 3, the disperser 23 is operated by the power supply device 24 and the bezel 16 by the pressure and temperature measuring controllers 18 and 19. The internal pressure and temperature are set to constant values.

The sludge introduced into the bezel 16 of the vacuum stirring means 3 is dispersed by the disperser 23 to widen the surface area, and the heat supplied by the heat supply device 30 of the heat supply means 5 is connected to the connection pipe 33. Is supplied to the heat exchange coil 29 through the heat conduction by a plurality of circulators 21 to rotate to the power supply device 20 is delivered to the sludge dispersed in the disperser 23 in the lower to dry the sludge. At this time, the switch 34 circulates the heat supplied from the heat supply device 30 and the heat recovered through the connection pipe 33 by circulating the coil 29 for heat exchange, so that the temperature inside the bezel and the temperature of the heat supply device 30 are increased. Ensure a balanced supply

Exhaust gas discharged from the heat supply device 30 is collected by the dust collector 31 except for the adjustment amount and then discharged into the atmosphere through the blower 32.

Meanwhile, the plurality of circulators 21 rotated by the power supply device 20 conduct heat from the coil 29 for heat exchange to circulate the heat inside the bezel 16 evenly, and the vacuum and deodorization means 6 The bezel is maintained by the power supply 36 so that the vacuum pump 35 maintains the temperature and pressure in the bezel 16 at a temperature and pressure preset by the temperature and pressure measurement and regulators 18 and 19. (16) The sludge dispersed by the disperser 23 is rapidly dried inside.

In order to maintain the inside of the bezel 16 in an optimal state, the pressure measuring and adjusting unit 18 is configured so that the shifting motor and the temperature measuring and adjusting unit 19 of the vacuum pump 35 are interlocked with the heat supply device 30. Operate according to pressure and temperature.

On the other hand, the water generated with the drying of the sludge in the bezel 16 is the air sucked through the connecting pipe 40 by the vacuum pump 35 passes through the condenser 37, the water is stored in the water reservoir ( 38), the odor in the air from which moisture is removed and the gas of the pollutant discharged to the atmosphere are deodorized through the deodorizer 39 and then discharged to the outside.

Therefore, the sludge dried once in the bezel under the condition of vacuum low temperature is opened by the power supply device 26 of the sludge discharge means 4, and the sludge discharge device 25 is opened and transferred to the discharge tank at the lower end, and dried. The sludge may be transported to a desired place by using the switch 27 and the carrier 28.

After that, the sludge discharge device 25 of the sludge discharge means 4 and the opening and closing device 27 at the bottom thereof are closed, and the inside of the bezel 16 is closed again, and the sludge to be dried again is the bezel 16. The sludge is vacuum-low-temperature-dryed by one treatment capacity through the same process as above.

As described above, the vacuum low temperature dryer 1 according to the present invention may be very convenient to transport and transport the dried sludge by dramatically reducing the moisture content of the sludge by vacuum low temperature drying of various sludges generated in an industrial site. In addition, it prevents nymbs from odors and prevents problems such as rejection of workers handling sludges in the field, and removes the risk of explosion due to odor gas when using dried sludge as industrial fuel. It is possible to eliminate the cause of the trouble.

In addition, the sludge treated by the vacuum low temperature dryer of the present invention has a calorific value of 3,000 ~ 6,000 ㎉ / ㎏ can be used stably as industrial fuel, such as thermal power plant, economical, and can be used as fuel in the cement industry as well Ashes born as fuel can be used as raw materials for cement, and when the livestock wastewater sludge is dried by the vacuum low temperature dryer of the present invention, the livestock wastewater sludge contains a large amount of organic material, so it can be used as a compost for organic farming. Can be.

In addition, the vacuum low temperature dryer of the present invention is rapidly dried while stirring the sludge to be treated at a low temperature of 60 ~ 90 ℃ in a vacuum state, and condensation and absorption of odor gas and water generated during the drying process and deodorized through the odor removal means The practicality is expected to be great, such as drying and lowering the water contained in the sludge by about 20 to 50%.

Claims (6)

Sludge supply means (2) for supplying various sludges generated during industrial and water treatment and wastewater treatment; Vacuum stirring means (3) for rapidly and drying the sludge by stirring the sludge supplied from the sludge supply means at a low temperature and a vacuum of 60 to 90 ℃; A sludge discharge means (4) installed at a lower end of the vacuum stirring means to discharge the dried sludge; Heat supply means (5) for supplying a heat source into the bezel of the vacuum stirring means; The vacuum stirring means is maintained in a vacuum state, and the vacuum stirring means comprises a vacuum and deodorizing means (6) which deodorizes and separates water and odor gas generated in the process of rapidly and drying the sludge. Vacuum low temperature dryer. The method of claim 1, The sludge supply means (2) is a storage tank (10) for storing the sludge, the switch 11 for quantitatively supplying the sludge of the storage tank by a predetermined amount, and the transport for transporting the sludge supplied from the switch A device (12), a switch (13) for putting the sludge conveyed from the transfer device into the hopper and then sealing it, and a sludge passed through the switch to the inner cylinder (22) of the vacuum stirring means (3). A vacuum low temperature dryer, which is characterized by consisting of a hopper (14). The method of claim 1, The vacuum stirring means (3) is to store the sludge and to rapidly dry in a low temperature and vacuum state, the bezel (16) separated up and down by the diaphragm 17 of the inner circumferential stop portion, and the upper inner circumferential edge of the bezel A pressure measuring and regulating device (18) installed at the bezel to measure and regulating the pressure inside the bezel, and a temperature measuring and regulating device (19) installed adjacent to the pressure measuring and regulating device to measure and regulate the temperature inside the bezel, and It is installed at the top of one bezel to supply power to the circulator to be described later, and by rotating the power supply to blow the air flow at the top to the bottom to circulate the air inside the bezel up and down to heat exchange At least one circulator 21 for thermally conducting the coil 29 and the inner cylinder 22 provided at regular intervals in the lower bezel of the circulator, and the bezel And it is installed at the bottom of the stage deny the inner barrel disperser 23 to disperse the injected sludge, while being rotated at a constant speed, a vacuum low temperature dryer the hayeoseo configure the power to the above dispersing machine into the power supply device 24 for supplying characterized. The method of claim 1, The sludge discharge means 4 is installed on the inner peripheral stop plate 17 of the bezel 16, the sludge discharge device 25 is discharged into the bezel to discharge the sludge finished vacuum low temperature, and the sludge A power supply device 26 for driving the discharge device, a switch 27 installed at a lower sloped portion to discharge the sludge that is vacuum low temperature dried, and a sludge installed at the lower portion of the switch to carry the dried sludge Vacuum low temperature dryer, characterized in that consisting of a carrier (28). The method of claim 1, The heat supply means 5 is installed between the upper inner bezel 16 and the inner cylinder 22 of the vacuum stirring means 3 to supply heat to the inside of the bezel 16 by indirect heating method 29 ), A heat supply device 30 for circulating hot water or gas through the connection pipe 33 to the coil for heat exchange, and a dust collector 31 for collecting ash contained in the gas when the heat supply device circulates the gas. And a blower 32 for discharging the exhaust gas purified by the dust collector to the outside, and a switch for circulating the heat supplied from the heat supply device 30 and the heat recovered and circulated to maintain an appropriate temperature at all times. 34. A vacuum low temperature dryer characterized by consisting of 34). The method of claim 1, The vacuum and deodorizing means (6) is connected to the vacuum stirring means (3) by a connecting tube (40) to vacuum the inside of the bezel (16) of the vacuum stirring means and the vacuum pump as described above. A power supply device 36 for supplying power to the condenser 37 for separating the dehydrated water of the sludge sucked into the connecting pipe 40 during the suction vacuum of the vacuum pump and introducing the dewatered water into the reservoir 38; Vacuum low temperature dryer characterized in that consisting of a deodorizer (39) for deodorizing the odor sucked into the connecting pipe (40) during the suction vacuum of the vacuum pump.