KR20180082335A - Condensable gas purification tower of organic waste dry equipment - Google Patents

Abstract

The present invention relates to a condensed gas distillation tower of an organic waste drying apparatus, which conducts a distillation treatment on an organic waste condensed gas discharged from an organic waste drying process, to maximally reduce the contamination of condensed wastewater. In particular, a condensed gas pretreatment system of a completely novel form realized according to the present invention includes a pretreatment equipment, such as a condensed gas distillation tower, installed on an exhaust line of a condensed gas generated from the organic waste drying process, to completely eliminate high concentrations of oily components, arsenic acid, or the like, contained in the condensed gas. The condensed gas distillation tower of an organic waste drying system can provide a fundamental solution to the air pollution problem by completely blocking the discharge of malodorous components generated during the drying process; and by removing as much oily components and arsenic acid as possible from the condensed gas generated from the drying process, can reduce the level of contamination in the final condensed wastewater, and thus can improve process efficiency of the system while enabling an economical operation of the facility.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a condensing gas purification tower of an organic waste drying apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condensation gas purification tower of an organic waste drying apparatus, and more particularly, to a condensation gas purification apparatus for condensation waste water, Gas purification tower.

Recently, modern society, which consists of mass production and mass consumption, is causing serious environmental pollution problems by mass disposal. Representative environmental pollution problems include soil and water pollution problems caused by mass disposal and air pollution problems caused by mass consumption of energy .

As a result of the intensive agriculture promotion as a result of the priority of the efficiency of production, excessive drainage of pesticide and chemical fertilizer and inadequate management of livestock manure resulted in problems of soil and water pollution problem Because it was caused.

In case of incineration or drying of waste in relation to the treatment of waste, when direct flame is applied to the waste or steam is applied, due to various factors such as the amount of waste, density, water content, incinerator size, There is a problem that a large amount of odor, soot, dust, air pollution, pollutant discharge gas, and the like due to incomplete combustion and drying occur.

For example, organic wastes such as livestock manure, food waste, and wastewater sludge are disposed of by dehydration, incineration and landfill, and some are recycled, but mostly discharged to the ocean.

However, recent marine pollution has been prohibited in order to prevent marine pollution. In case of incineration, enormous facility investment is needed, and civil petitions of residents are extreme, and biogas production through anaerobic digestion is not effective in terms of energy efficiency There is a problem of disposal of the digested waste liquid.

Therefore, recently, a drying method for drying organic wastes as a renewable energy resource has been attracting attention. When the organic wastes are dried to reduce the water content, excellent solid fuel having a calorific value of 3,000 to 4,000 kcal / kg or more can be obtained .

Generally, the equipment for drying the organic waste includes a direct or indirect drying type dryer using hot air and steam, and an electromagnetic wave drying type dryer using a microwave.

However, in order to remove moisture that is evaporated during the drying process, an air flow must be present, which inevitably results in high-intensity condensation gas containing a large amount of water, oil, and non-product.

Such condensed gas is condensed in a condenser or the like, and the condensed wastewater generated at this time is reprocessed or discharged after the contamination degree is measured.

However, in the case of the present organic waste drying system, the condenser alone has a limitation in lowering the pollution degree of the condensed wastewater, and the time and cost of reprocessing the condensed wastewater are increasing.

Taking this into consideration, separate facilities such as a wet scrubbing tower, an activated carbon adsorption tower, and a biofilter are installed as methods for ultimately lowering the pollution degree of the condensed wastewater by removing oil and scattering in the condensed gas discharged to the outside in the drying process. And then removing the oil or scattered particles in the condensed gas discharged from the dryer, and discharging the condensed wastewater in a state where the pollution degree of the condensed wastewater is lowered.

However, conventionally, in order to treat the condensed gas generated during the drying of the organic waste, it is necessary to provide a large-scale facility such as a separate condensation gas pretreatment facility, so that a large space is required for installing the facility, In particular, it is difficult to completely remove the condensed gas generated from the dryer due to the high concentration of oil or scattering mixed with the steam at high temperature, and thus the efficiency of treatment is inferior. In other words, there is a problem in lowering the pollution degree of the final discharged condensed wastewater .

Korean Patent Publication No. 10-2015-0048438 Korean Patent Publication No. 10-2015-0027968 Korean Patent Publication No. 10-2006-0064141 Korean Patent Publication No. 10-2002-0014975

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a pretreatment apparatus, such as a condensed gas purification tower, disposed on a discharge line for condensed gas, By implementing a new type of condensate pretreatment system that can completely eliminate high concentration of oil and scattering contained in the condensed gas, it is possible to completely prevent the odor component generated in the drying process from being discharged to the outside In addition to being able to fundamentally solve the air pollution problem, it is possible to reduce the pollution degree in the final condensation wastewater by removing as much oil and dust as possible in the condensed gas generated during the drying process, To provide a condensate gas purification tower for an organic waste drying system that can be operated It has its purpose.

In order to achieve the above object, the condensed gas purification tower of the organic waste drying system provided in the present invention has the following features.

Wherein the condensation gas purification tower of the organic waste drying system comprises an organic waste drying apparatus including a dryer for drying organic wastes, wherein the condensation gas is supplied to the condensing gas discharge line of the dryer through a hot trap through which the condensation gas passes, Wherein the purification tower has a structure in which steam is flown inside and the entire space excluding the space occupied by the condensed gas inflow pipe and the condensed gas discharge pipe in the internal space of the purifier body is formed And two tubular members connected in parallel vertically in the interior of the hot trap of the tablet column body. The lower end of the tubular column is connected to the upper end of the tablet column body, And a condensed gas inflow And a condensing gas discharge pipe. A "U" -shaped condensed gas flow path is formed which rises along the condensed gas discharge pipe after the condensed gas descending downward along the condensed gas inlet pipe passes through the space portion. The oil contained in the condensed gas can be removed while passing through the condensed gas flow path of the "U" shape formed by the pipe and the condensed gas discharge pipe, and the foreign matter contained in the condensed gas A cylindrical demister having a multi-layered wire mesh structure is disposed. Inside the space portion, the condenser is positioned just below the condensed gas inflow pipe. In addition, the condenser is driven by motor power to remove water in the condensed gas by a centrifugal force. As shown in FIG.

The fan is positioned in a coaxial structure or a shrinking structure to directly see the condensed gas inflow pipe. The fan is connected to the shaft of the fan motor installed in a vertical posture with its axis up on the bottom surface of the tablet column body, As shown in Fig.

In the condensed gas discharge pipe, a steam nozzle for supplying steam to clean the demister may be installed at an upper position of the demister.

As a preferred embodiment, a steam nozzle nozzle device for providing steam for cleaning the interior is installed at an upper end of the condensed gas inflow pipe. The steam nozzle device includes a pipe for supplying steam, A bearing which is formed by a combination of a ring and a rotary ring, a fixed ring is coupled with a pipe, and a steam diffusion space communicating with the rotary ring of the bearing and rotatable, the steam diffusion space communicating with the pipe is formed, And at the same time, at least one nozzle pipe communicating with the steam diffusion space is mounted.

The steam injection hole formed in the nozzle pipe at this time may be formed in a horizontal direction on the circumference of the end portion of the nozzle pipe, so that the nozzle body itself can be rotated by the steam injection force.

The condensed gas purification tower of the organic waste drying system provided in the present invention has the following effects.

First, by using a condensed-gas purification tower disposed at the downstream side of the dryer, it is possible to reduce the contamination degree of the condensed wastewater discharged at the final stage by separating and removing high-concentration oil fractions and scattered air mixed in the condensed gas, , Air pollution problem, soil pollution problem, etc. can be fundamentally solved.

Second, by applying a method of collecting oil and the like by a hot trap method using steam, it is possible to improve the efficiency of treatment of contamination sources such as oil and scattering.

Third, a demister is disposed in the hot trap to effectively remove contaminants such as fine dust (scattering).

Fourth, a fan is installed inside the tablet column, and the fan is rotated at a high speed of 1,000 rpm or more to separate the gas and the liquid by the centrifugal force, so that the water particles (moisture) in the condensed gas can be completely removed, The fine dust and oil removal performance can be improved.

Fifth, by applying a structure that can periodically clean the inside of the trap by using steam, it is possible to enhance the efficiency of maintenance and repair of the equipment, management and operation, and extend the service life of the equipment.

Sixth, since large-scale facilities for treating condensate wastewater can be eliminated, it is possible not only to operate the whole system efficiently but also to reduce the operating cost and to reduce the energy efficiency due to the recycling of the condensed gas after the pre- And it is advantageous in designing factory layout according to space.

1 is a front view showing a condensed gas purification tower of an organic waste drying system according to an embodiment of the present invention;
FIG. 2 is a plan view showing a condensed gas purifying column of an organic waste drying system according to an embodiment of the present invention. FIG.
3 is a side view showing a condensed gas purifying column of an organic waste drying system according to an embodiment of the present invention
FIG. 4 is a perspective view showing a steam atomizing nozzle apparatus in a condensation gas purification tower of an organic waste drying system according to an embodiment of the present invention. FIG.
5 is a cross-sectional view illustrating a steam atomizing nozzle apparatus in a condensed gas purification tower of an organic waste drying system according to an embodiment of the present invention.
6 is a front view showing a state of use of a condensed-gas purifying column of an organic waste drying system according to an embodiment of the present invention;

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 are a front view, a side view, and a plan view of a condensed gas purifying tower of an organic waste drying system according to an embodiment of the present invention.

As shown in FIGS. 1 to 3, the organic waste drying apparatus to which the condensed-gas purifying column of the present invention belongs adopts a disk-type dryer to produce organic wastes having a moisture content of 80% or more, for example organic wastes such as food wastes and sludge It is a device that can dramatically reduce energy costs by drying the wastes at a water content of less than 10%.

For example, the organic waste drying apparatus includes a supply unit (not shown) for supplying organic waste, a disk type drier (not shown) for drying organic waste, a boiler (not shown) for supplying a heat source to the drier, A cyclone (not shown) for separating the particulate organic waste in the discharged condensed gas, a condenser (not shown) for condensing the condensed gas discharged from the dryer, and a discharging means (not shown) for discharging the dry waste.

Here, the structure and operation method of the equipment such as the dryer, the boiler, the cyclone, the condenser, etc. are the same as those used in the conventional organic waste drying apparatus, and thus a detailed description thereof will be omitted.

The basic process of treating organic waste in such an organic waste drying apparatus will be described below.

① In the supply means, the organic waste brought in from the waste disposal site is put into the input hopper, and the organic waste discharged from the input hopper is supplied to the dryer after passing through the crushing separator.

② In the dryer, organic wastes with an initial moisture content of 80% or more are directly and indirectly heated by the steam and the disk provided in the boiler, and the final moisture content is dried to 10% or less.

③ In the boiler, the heat source such as steam for drying the organic waste in the dryer is supplied to the dryer side.

(4) In the cyclone, a condensing gas of about 100 ° C including condensed gas sent through a discharge line extending from a dryer, for example, oil, organic waste particles, etc., The organic wastes on the particles are separated downward and the condensed gas, which is a hot wet gas, is separated upward.

(5) In the condenser, the condensation gas discharged through the discharge line is condensed by heat exchange with the cooling water to be produced as condensed water.

⑥ In the discharge means, the dry organic waste discharged from the dryer is put into the storage hopper, and the dried organic waste discharged from the storage hopper is taken out by a truck or the like and utilized as a resource.

Particularly, in the present invention, a purification tower for purifying crude gas which can reduce the pollution degree of the final discharged condensed wastewater by completely removing high-concentration oil and scattering contained in the condensed gas generated in the organic waste drying process .

That is, the purification tower is operated for the purpose of removing the high concentration of pollutants in the condensed wastewater generated in the organic wastes treatment process before the condensed gas is treated in the condenser. In order to minimize the pollution degree, To reduce the cost of wastewater treatment.

For this purpose, in a condensing gas discharge line section which is connected between a cyclone and a condenser in a predetermined section on the condensed gas discharge line extending from the dryer, a purification tower (for example, 11 are installed.

In the tablet column 11, the hot trap, which is maintained at a temperature of about 100 ° C or higher by steam, can be used to effectively remove oil in the condensed gas.

For example, the condensed gas discharged from the dryer passes through a cyclone (not shown), a purification tower 11, and a condenser (not shown). In this case, while the condensed gas passes through the purification tower 11, The wet steam in the condensed gas maintains the water vapor state as it is and the higher boiling point oil is condensed and can be separated and removed to the lower part of the refining tower as it is in a mild and aggressive state.

As described above, the tablet tower 11 which functions to effectively remove oil, scattering, and the like from the condensed gas will be described in detail.

The purification tower 11 heats or condenses the condensed gas flowing along the condensed gas discharge line after passing through the condensed gas discharged from the dryer, that is, the cyclone, thereby removing and removing the oil contained in the condensed gas at a high concentration And collecting.

To this end, the tableting tower 11 includes a tableting tower body 12 having a vertical cylindrical top structure, and the tableting tower main body 12 includes tablets having a structure including about three to four legs And is vertically erected by the top frame 19.

A steam inlet 20 for introducing steam is formed on one side of the upper end of the upper end of the tablet body 12, and a steam outlet 21 for discharging steam is formed on the outer circumferential surface of the lower end.

Accordingly, the hot steam, for example, steam of about 100 캜 introduced into the upper steam inlet 20 of the tablet column main body 12 can be supplied to the hot trap 10 formed inside the tablet column body 12 It is possible to escape to the lower steam outlet 21 after passage.

As a result, the hot steam in the hot trap 10 has a heat exchange function with the condensed gas flowing in the condensed gas inflow pipe 13 and the condensed gas discharge pipe 14, which will be described later, So that the oil or scattered particles in the condensed gas can be separated while being separated while being condensed and collected in the lower end region of the tablet column body 12.

For example, the constituent components of the condensed gas at a high concentration are micro-dried organic substances scattered by a wind pressure artificially generated in the drying process (about 350 mmAq or more), that is, micro-dried organic substances in which various kinds of oil and the like are mixed, It is dissolved in the condensed water while being mixed with the gas to increase the BOD and COD when the condensed gas is condensed, which is the main cause of decreasing the water quality of the final discharged condensed wastewater, that is, increasing the pollution degree of the water quality.

Therefore, the dehumidified fine organic matter mixed in the condensed gas is removed by raising the contact area by passing the condensed gas purification tower through the condenser pretreatment unit.

When the supersaturated state of the finely dried organic matter adhered to the demister is progressed, it is checked whether the air volume and the wind pressure which mainly affect the drying function are interlocked, and then the steam of high temperature and high pressure of about 130 ° C or more is periodically The separating function state of the condensed-gas purifying column can be maintained by desorbing the supernatant, which has been aged in a supersaturated state, and discharging it to the attached rotary valve of the lower part.

The temperature of the condensed gas entering through the upper inlet of the condensed gas inlet pipe 13 is about 90 ° C. and the temperature of the condensed gas exiting through the upper outlet of the condensed gas outlet pipe 14 after the oil and the like is removed Is about 100 ° C.

That is, the condensed gas containing the finely dried organic material entering the condensed gas purification column is about 90 ° C., and the temperature exiting through the upper outlet of the condensed water discharge pipe 14 is maintained at about 100 ° C. By using the boiling point of water It is possible to induce condensation at a relatively low temperature in the finely dried organic matter and oil phase mixed in the condensed gas, and to effectively separate the condensed water by supplementing the boiling point in the water inlet.

A hot chamber 10 is formed in the tablet column body 12 in the form of a space through which the steam flows while staying in the hot chamber 10. The condensed gas inlet pipe 13 and the condensed gas The discharge tube 14 can be positioned so that the heat in the hot chamber 10 and the condensed gas in the condensed gas inlet pipe 13 and the condensed gas in the condensed gas discharge pipe 14 can naturally be heat exchanged.

At this time, the hot chamber 10 is provided between the upper end plate of the tablet column body 12 and the lower end of the tablet column body 12, for example, between the partition walls 27 provided inside the lower end of the tablet column body 12 Quot; means a space surrounded by the tablet body wall.

In the inside of the tablet column body 12, that is, the inside of the hot chamber 10, the flow path of the steam is secured to increase the time for the steam to stay in the hot chamber 10, A plurality of baffles 22 are provided.

The baffle 22 is a substantially semicircular plate having a groove capable of accommodating about a half circumference portion of the condensed gas inflow pipe 13 and the condensed gas discharge pipe 14, The baffles 22 can be arranged in a zigzag shape while maintaining a constant interval along the vertical length of the hot chamber 10.

Accordingly, the steam flowing into the hot chamber 10 can be passed through a zigzag-shaped long path formed by each baffle 22, so that steam stays in the hot chamber 10 The heat exchange function between the steam and the condensed gas can be actively generated by that much time.

In addition, a plurality of pipe members, for example, a condensed gas inlet pipe 13 composed of two cylindrical pipes and a condensed gas discharge pipe 14 are vertically arranged in parallel with each other, Respectively.

At this time, the upper inlet of the condensed gas inlet pipe 13 is connected to the discharge side of the cyclone through the condensed gas discharge line, and the upper outlet of the condensed gas discharge pipe 14 is connected to the condenser side through the pipe.

The lower ends of the condensed gas inflow pipe 13 and the condensed gas discharge pipe 14 are communicated with the space 15 formed in the lower portion of the tablet column body 12.

That is, the condensed gas inflow pipe 13 and the condensed gas discharge pipe 14 pass through the upper end of the tablet column body 12 and then vertically move the hot trap 10 formed inside the tablet column body 12 The space 15 formed below the tablet column body 12 after passing through the partition wall 27 provided inside the lower end portion of the tablet column body 12, And extends to the inner space of the lower space portion 15 partitioned by the partition walls 27 provided inside.

The condensed gas inflow pipe 13 and the condensed gas discharge pipe 14 are disposed in the space portion 15 and can communicate with each other.

Accordingly, the condensed gas entering the condensed gas inflow pipe 13 through the upper inlet side of the condensed gas inflow pipe 13 flows downward along the condensed gas inflow pipe 13 forming the vertical long downward path. The condensed gas is introduced into the condensed gas discharge pipe 14 through the lower end of the condensed gas discharge pipe 14 after passing through the space 15 and the condensed gas thus introduced is also supplied to the condensed gas And is discharged through the upper outlet side after climbing up along the discharge pipe 14. [

The hot steam that has entered the hot trap 10 through the steam inlet 20 flows in the vicinity of the condensed gas inlet pipe 13 and the countered gas outlet pipe 14, It is possible to heat the condensed gas flowing in the inlet pipe 13 and the condensed water discharge pipe 14 or to prevent the temperature from lowering. As a result, the oil in the condensed gas condenses and separates, To the bottom of the floor.

The condensed gas including the oil or the like that flows into the condensed gas purification column in this way flows through the vertical long path which is the "U" condensed gas flow path made by the condensed gas inflow pipe 13 and the condensed gas discharge pipe 14 After the temperature sufficiently heated by the steam is maintained, that is, the oil in the condensed gas is condensed by the phase transition phenomenon or the boiling point, and is separated from the condensed gas and collected down together.

In particular, the inside of the tablet column body 12 is constituted by a hot trap 10 providing a flow path for steam for heating the condensed gas.

For example, a hot trap 10 is formed in the inside of the tablet column body 12, and the hot trap 10 is formed in the entire space except the space occupied by the condensed water inlet pipe 13 and the condensed water discharge pipe 14, 10 is isolated from the outside by the upper end plate of the tablet column body 12 and the lower portion is isolated from the space portion 15 of the tablet column body 12 by the partition wall 27, The space portion 15 in the form of a partition can be formed in the interior of the body 12.

Steam inlets 20 and steam outlets 21 are formed in the upper and lower side surfaces of the tablet body 12 so as to communicate with the internal hot traps 10, In the case of the steam inlet 20, steam can be supplied from an external boiler (not shown) or the like. In the case of the steam outlet 21, an external water supply tank (not shown) So that the steam that has been exchanged with the heat exchanger can be reused.

The steam entering the hot trap 10 through the steam inlet 20 flows through the condensed gas inflow pipe 13 and the counter gas inflow pipe 14, Exchanged with condensed gas flowing through the inside of the condenser 13 and the condensed water discharge pipe 14, and then exited through the steam outlet 21.

As described above, in the present invention, the condensed gas flowing in the condensed gas inlet pipe 13 and the condensed gas discharge pipe 14 is separated from the hot steam flowing in the hot trap 10 and indirectly heat- By condensing the oil or the like, there is an advantage that the steam after the heat exchange action can be recycled.

For example, when heat is exchanged by direct contact of steam and condensed gas, the steam itself is mixed with the condensed gas and the whole amount becomes waste water. Therefore, the additional equipment and cost However, as in the present invention, by applying indirect heat exchange between the condensed gas and the steam, the steam can be sent to the water supply tank side for reuse while fundamentally eliminating the generation of the wastewater.

A drain pipe 23 is connected to the lower end plate of the tablet main body 12 and a valve device 25 is installed in the drain pipe 23 for opening and closing the drain pipe 23 by driving the drain motor 26 So that debris such as oil fractions collected at the bottom of the tablet column body 12, that is, the bottom portion of the space portion 15, moisture and the like can be periodically collected and processed.

That is, the valve device 25 interrupts the discharge of impurities such as oil and the like collected at the bottom of the space 15 and the water collected by the fan 17 described later, A butterfly valve that operates by being driven by the valve 26, and a detailed description of its structure and operation will be omitted.

Here, the valve device 25 and the drain motor 26 can be installed on a separate auxiliary tabletting frame (not shown).

In the present invention, the demister 16 is provided as means for lowering the BOD (Biochemical Oxygen Demand) and the COD (Chemical Oxygen Demand) by adsorbing and removing not only impurities such as fine dust contained in the condensed gas, do.

The demister 16 is a cylindrical net structure made of a multi-layered wire mesh structure made of stainless steel or the like and stacked in layers. The demister 16 has an inner lower end section of the condensed gas discharge pipe 14, for example, 15 at the lower inlet side of the condensed gas discharge pipe 14.

Here, since the demister 16 is installed in the inflow side of the lower end of the condensed gas discharge pipe 14, the demister 16 is advantageous over being installed in another section.

That is, it is possible to obtain an effect of about 90% or more by installing the organically aged state at the lower end where desorption and capture and discharge are easier than those installed in other sections.

In this case, the demister 16 may have a cylindrical shape having an outer diameter corresponding to the inner diameter of the condensed gas discharge pipe 14, and may be installed in a coaxial structure in the condensed gas discharge pipe 14, 16 can be supported by a structure supported by a bracket (not shown) located on the inner wall of the condensed-gas discharge pipe 14.

In particular, since the demister 16 is heated by the high-temperature steam flowing in the hot trap 10, the demister 16 can maintain a predetermined self-temperature, that is, it can maintain a predetermined temperature without an artificial heating device Therefore, in the process of passing the condensed gas through the demister 16, the water vapor escapes through the heat transfer effect of the demister 16, and the vapor of low boiling point condenses in the demister 16 and can be separated.

The demister 16 is a stainless steel wire netting that has a high heat transfer efficiency from the condensing column body 12 to minimize the condensation rate of water vapor in the condensed gas, The condensed oil can be flowed downward to be removed, and the fine mesh network has a multi-layer laminated structure. When the condensed gas flows through the wire net, the scattered dust in the condensed gas through the wire netting structure can be removed to the utmost, The flow of the gas is also not given.

Accordingly, the condensed gas flows through the condensed gas inflow pipe 13 and then flows out of the space portion 15 and passes through the demister 16 in the condensed gas discharge pipe 14, The condensed wastewater that is finally discharged due to the reduction of the condensed gas finally discharged from the condensed-gas purification tower is reduced in the amount of oil and scattered, and satisfies the BOD and COD-related condensed wastewater discharge allowance standards .

A steam spraying nozzle 18 is installed in the condensed gas discharge pipe 14 as a means for washing the inside and the surface of the demister 16.

For example, the condensed gas discharge pipe 14 is provided therein with a steam discharge nozzle 18, which is supported through the wall of the tablet body 12. The steam discharge nozzle 18 is connected to the condensed gas discharge pipe 14, And is located just above the upper surface of the demister 16 provided in the demultiplexer 14.

The steam spraying nozzle 18 is connected to a steam supply means (not shown) such as an external boiler or the like, and a pressure providing means (not shown) such as a compressor to receive high temperature and high pressure steam.

Accordingly, high-temperature steam is sprayed to the inside and the surface of the demister 16 at high pressure periodically through the steam distribution nozzle 18 during or after the operation of the condensed-gas purifying column to attach to the multi-layered wire netting And the fine dust can be effectively removed as well as the residues of oil and the like which have been used. As a result, by continuously using the demister 16, the maintenance efficiency of the purification tower facility is improved, And management advantages.

Particularly, in the present invention, the fan 17 is provided as a means for concentrating and removing moisture contained in the condensed gas so as to further raise the efficiency of removing condensate for oil, fine dust, and the like on the downstream side of the following tower 16.

The fan 17 is located in the interior of the space portion 15 immediately below the condensed gas inflow pipe 13 and the fan 17 thus positioned is operated (rotated) by the motor power to convert the moisture in the condensed gas into centrifugal force As shown in FIG.

The fan (17) is located in a coaxial structure or a monoaxial structure while looking at the condensed gas inlet pipe (13), so that the condensed gas can be sucked up when the fan is operated.

A fan motor 28 having a vertical posture with its axis up is installed on the bottom surface of the tablet tower main body 12, that is, on the lower end plate, and a fan motor 28 is installed at this time. Axis of the tablet body 12 and the body of the tablet body 12, respectively.

The fan 17 is coupled to the shaft of the fan motor 28 so that the fan 17 rotates during the operation of the fan motor 28 and the condensed gas exiting the lower end of the condensed gas inlet pipe 13 And the like.

Here, the fan 17 functions to separate the gas and the fluid by centrifugal force while rotating at a high speed of about 1,000 rpm or more.

Therefore, during operation of the fan motor 28, the condensed gas from the condensed gas inflow pipe 13 is sucked into the fan 17, and at the same time, the water (water particles) in the condensed gas due to the strong centrifugal force And can be released to the bottom of the tablet body 12 while being separated.

In addition, it is needless to say that oil, fine dust, etc. contained in the condensed gas may be removed while being separated together with moisture during the separation of water in the condensed gas due to the rotation of the fan 17. [

The condensed gas from which moisture has been removed flows into the condensed gas discharge pipe 14 and then passes through the demister 16 so that the demister 16 separates and removes oil and fine dust in the condensed gas .

4 and 5 are a perspective view and a cross-sectional view illustrating a steam atomizing nozzle apparatus in a condensed gas purification tower of an organic waste drying system according to an embodiment of the present invention.

As shown in FIGS. 4 and 5, the steam distribution nozzle device 24 removes residue such as oil and fine dust attached to the inner wall of the condensed gas inflow pipe 13 by a strong steam injection pressure ).

At this time, the steam distribution nozzle device 24 can be positioned at a predetermined height in the condensed gas inflow pipe 13, for example, at the upper end into which the condensed gas is introduced, So that it can be installed in a supported structure.

The steam nozzle device 24 may be a combination of a pipe 24a for supplying steam, a bearing 24b for supporting rotation, and a nozzle body 24f for spraying steam while rotating.

Here, the pipe 24a is connected to an external steam generating source (not shown) so that high-pressure steam can be supplied.

The bearing 24b is composed of a combination of an inner and outer ring of a stationary ring and a rotary ring which are relatively rotatable in a state where the bearings 24b are coupled to each other. At this time, a pipe 24a is inserted into the inner stationary ring And the nozzle body 24f is tightly coupled to the bottom side of the rotary ring.

This enables rotation of the rotary ring and the nozzle body 24f using the pipe 24a and the stationary ring as support bodies.

A known mechanical seal may be applied to the bearing 24b at this time.

The nozzle body 24f is in the form of a circular block in which the interior of the nozzle body 24f is hollow, that is, the steam diffusion space 24c is formed therein. The nozzle body 24f is welded to the upper housing block and the lower housing block, .

The plurality of bolts and nuts are fastened in such a state that the nozzle body 24f is closely contacted with the lower portion of the rotary ring of the bearing 24b so that the nozzle body 24f can rotate And can be installed in a rotatable structure while being supported on the ring side.

The lower end of the pipe 24a at the central portion of the upper surface of the nozzle body 24f thus installed is connected to the pipe 24a so that the pipe 24a communicates with the steam diffusion space 24c in the nozzle body 24f to supply steam .

A plurality of nozzle pipes 24e, for example, four nozzle pipes 24e arranged at intervals of 90 degrees, are mounted on the outer periphery of the nozzle body 24f, It is possible to couple the outer peripheral wall of the sieve 24f horizontally and communicate with the inner steam diffusion space 24c.

In addition, a steam injection hole 24d is formed in the nozzle pipe 24e at an end thereof, so that steam can be injected through the nozzle injection hole 24d.

Particularly, the steam injection hole 24d formed in the nozzle pipe 24e is formed in a horizontal direction on the circumference of the end surface of the nozzle pipe 24e, and thus the steam injection force discharged through the steam injection hole 24d The nozzle body 24f can be rotated by itself.

Here, the steam injection holes 24d in the four nozzle pipes 24e provided in the nozzle body 24f are all pierced in the same direction, and the steam injection holes 24d of the nozzle pipes 24e 24b, 24c and 24d is doubled, the smooth rotation of the nozzle body 24f can be ensured.

In this way, the nozzle body 24f of the steam atomizing nozzle device 24 installed in the condensed gas inflow pipe 13 rotates and the steam is supplied to the condensed gas inflow pipe 13 through the nozzle pipe 24e It is possible to effectively remove debris such as oil and fine dust adhering to the inner wall of the condensed gas inflow pipe 13 by strongly and uniformly spraying it on the inner wall.

The operation state of the condensing gas purification tower of the organic waste drying system will be described below.

FIG. 6 is a front view showing a state of use of a condensed gas purification tower of an organic waste drying system according to an embodiment of the present invention. FIG.

As shown in FIG. 6, the organic wastes brought in from the waste semi-entry stage are dried while sequentially passing through a feeding means, a crushing separator (not shown), a drier, a vibration discriminating device (not shown), a crusher (not shown) After processing, it is taken out to the outside for the purpose of conversion into resources.

Meanwhile, the condensed gas (hot and humid gas) discharged from the dryer passes through the cyclone, the purification tower 11, and the condenser in order to remove particulate organic waste and oil.

At this time, the condensed gas flowing into the purification column 11 is condensed in the condensed gas inlet pipe (not shown) while maintaining the heating and the temperature (the temperature of the condensed gas just before flowing into the purification column) under the hot steam environment of the hot trap 10 U "shaped condensed gas flow path formed by the condensed gas discharge pipe 14 and the condensed gas discharge pipe 14. In this process, the oil and fine dust (scattered) in the condensed gas are sufficiently heated by the steam environment Condensed from the condensed gas while maintaining the temperature at the same time, and is collected by being separated down while being separated from the demister 16, so that oil, fine dust, and the like in the condensed gas are almost completely filtered.

Particularly, the condensed gas that has escaped from the condensed gas inflow pipe 13 is attracted by the fan 17 rotating at a high speed. In this process, water in the condensed gas is separated in a large amount by the centrifugal force, The oil and the fine dust are also separated from each other. As a result, the oil and fine dust that have not yet been separated due to condensation in the steam environment can be removed again, and the condensed gas, which has exited a large amount of water, flows into the demister 16 side The oil and fine dust in the condensed gas can be more effectively condensed and adsorbed in the demister 16 and can be separated.

Then, the condensed gas (condensed gas in the state in which oil and fine dust are removed) discharged from the tablet column 11 is sent to a deodorization combustion boiler (not shown) and a discharge means via a condenser, do.

As described above, in the present invention, in order to treat the condensed gas of the organic waste generated in the drying process of the organic waste, a high concentration of oil, fine dust, etc. contained in the condensed gas is purified using a pretreatment apparatus such as a condensed- By constructing a new condensed gas treatment system that completely removes the odorous components, it is possible to lower the pollution degree of the condensed wastewater finally discharged in the organic waste drying process, and also to completely eliminate odorous components, thereby preventing environmental pollution, The entire facility can be operated economically and efficiently.

10: Hot trap
11: Tablet Tower
12: Purification column body
13: Condensate gas inlet pipe
14: condensed gas discharge pipe
15:
16: Demister
17: Fans
18: Steam nozzle
19: Tabletop frame
20: Steam inlet
21: Steam outlet
22: Baffle
23: drain pipe
24: Nozzle device using steam
24a: pipe
24b: Mechanical seal
24c: steam diffusion space
24d: Steam injection hole
24e: nozzle pipe
24f: nozzle body
25: valve device
26: Drain motor
27:
28: Fan motor

Claims (5)

1. An organic waste drying apparatus comprising a dryer for drying organic waste,
And a purification tower (11) installed on the condensed gas discharge line of the dryer to remove oil in the condensed gas by using a hot trap (10) through which the condensed gas passes,
The purification tower 11 is formed in a total space other than the space occupied by the condensed gas inflow pipe 13 and the condensed gas discharge pipe 14 in the internal space of the tablet column body 12 while steam flows therein And two tubular members arranged adjacently in parallel vertically in the interior of the hot trap (10) of the tablet column body (12). The tubular member (12) (13) and a condensed gas discharge pipe (14) communicating with each other through a space (15) inward of the inside of the tablet column body (12) A "U" shaped condensed gas flow path is formed which rises along the condensed gas discharge pipe 14 after the condensed gas descending down the condensed gas inlet pipe 13 passes through the space portion 15, The inlet pipe (13) and the condenser Can be the discharge pipe (14) with oil which is included in the condensed gas removed during the condensation through the gas flow path of the "U" shape to the composition,
A cylindrical demister 16 having a multi-layered wire mesh structure is installed in the lower end of the condensed gas discharge pipe 14 to remove foreign substances contained in the condensed gas.
And a fan (17) is installed inside the space part (15) and is positioned directly below the condensed gas inflow pipe (13), and is operated by motor power and removes water in the condensed gas by centrifugal force. Condensation gas purification tower of the system.
The method according to claim 1,
The fan 17 is disposed in a coaxial structure or a whorl structure with the condensate gas inlet pipe 13 directly facing the fan shaft 17. The fan 17 is mounted on a bottom surface of the tablet body 12, Is connected to the axis of the condenser (28) so that it can be rotated during operation of the fan motor (28).
The method according to claim 1,
Wherein a condensing gas supply nozzle (18) for supplying steam to the demister (16) for cleaning the demister (16) is installed in the condensed gas discharge pipe (14) tower.
The method according to claim 1,
The condensing gas inlet pipe 13 is provided at its upper end with a steam nozzle unit 24 for supplying steam to clean the inside of the condensed gas inlet pipe 13,
The steam distribution nozzle device 24 includes a pipe 24a for supplying steam and a bearing 24b formed by a combination of a fixed ring and a rotary ring that are rotatable relative to each other and to which a pipe 24a is coupled, A steam diffusion space 24c connected to the rotary ring of the bearing 24b so as to be rotatable and communicating with the pipe 24a is formed therein and the steam diffusion hole 24d is formed in the periphery thereof, And a nozzle body (24f) on which at least one nozzle pipe (24e) communicating with the nozzle body (24f) is mounted.
The method of claim 4,
The steam injection hole 24d formed in the nozzle pipe 24e is formed to extend in the horizontal direction on the circumference of the end of the nozzle pipe 24e so that the nozzle body 24f can be rotated by itself Wherein the condensation gas purification tower of the organic waste drying system comprises:

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