KR20160022187A - Steam supply device for cooker system - Google Patents

Abstract

The present invention relates to a steam supply device for a cooker system. The steam supply device of the present invention is designed to supply steam in the cooker system which is used for drying organic sludge, wherein the device comprises: an inner pipe where organic sludge is introduced into; an outer pipe covering an outer side at intervals while forming a concentric circle along with the inner pipe; and a steam retention pipe disposed between the inner pipe and the outer pipe and forming a hollow chamber. In addition, a pair of steam supply lines are further connected to both lower sides of the steam retention pipe so as to stir and mix the steam supplied from a boiler and then to supply the steam into the chamber by spraying the same. A condensate water discharging pipe is also provided at the lower top of the steam retention pipe. Thus, according to the present invention, provided is the steam supply device for the cooker system, which is capable of applying heat in a short amount of time and stirs and mixes steam by vortex so as to supply the steam, thereby decreasing the production of condensate water and thus achieving high thermal efficiency and treatment efficiency together. Thus, processing costs decrease.

Description

STEAM SUPPLY DEVICE FOR COOKER SYSTEM BACKGROUND OF THE INVENTION [0001]

The present invention relates to a steam supply device for a cooker system, and more particularly, to a steam supply device for a cooker system, in which steam is supplied from a cooker system, which is an indirect heating type dryer, while minimizing generation of condensed water, Supply device.

In general, organic wastes are substances with a concentration of organic matter of 40% or more, and can be exemplified as food waste, sewage sludge, food industry waste, and bio waste of a plant.

Moreover, with rapid industrialization and the development of material civilization, the abundance of dietary life has increased exponentially in the production of large quantities of food waste, sewage sludge, and industrial waste of Busan.

In particular, with the ratification of the London Convention in 2009, organic wastes including livestock manure waste as well as food waste have been legally banned completely from the marine dumping in 2013, and in the case of incineration, .

Therefore, the government is focusing on low-carbon green growth, climate change response, resource recycling policies using new and renewable energy and waste, and overall government operations are being adjusted. Among them, organic wastes, (Recycling as agricultural fertilizer, fertilizer, feed, industrial cement, alternative fuels for power generation, etc.) through processing technology of recycling, and recycling.

In this connection, in the related art, there are a number of patent applications such as Published Patent No. 1999-0038331, Patent No. 0314510, Patent No. 2001-0037075, Patent No. 2003-0062767, No. 0543406, No. 1209770 Sludge treatment, drying, and fueling technology of the sludge.

However, the key to sludge treatment is to hydrolyze sludge with a moisture content of 80% or more, reduce it to 40-45%, and form and dry it to produce a solid with a moisture content of around 10%. , The drying process of the above-described techniques has a disadvantageous structure in terms of the configuration is poor, efficiency is low, productivity is improved, and fuel cost is reduced.

Therefore, the sludge treatment facility is mainly imported from developed countries such as Europe and installed in the domestic market, and the core process is well known in the art in the 3-pass drying system.

In other words, the absence of a system capable of processing a high-efficiency drying process has hindered localization. Recently, due to concentration of technology development such as national projects, many domestic companies are reducing technology gap to a considerable extent.

In particular, the dryer used in the above-described sludge treatment, that is, the cooker system adopts the indirect heating method, and steam is mainly used as a heat source.

However, since the supply of steam is not smooth, the efficiency of the heating is increased due to the long heating time during the supply of steam to the inside of the tube, and consequently, condensation water is generated very much, which is costly in terms of efficiency.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a sludge drying method and a sludge drying method, The present invention has been made in view of the above problems, and it is an object of the present invention to provide a steam supply apparatus for reducing the generation of condensed water used in a cooker system capable of achieving a reduction in fuel cost,

In order to achieve the above object, the present invention provides a supply device for supplying steam in a cooker system for drying organic sludge, comprising: an inner pipe to which organic sludge is charged; An outer tube covering the outer tube with a gap concentric with the inner tube; And a steam retention pipe disposed between the inner pipe and the outer pipe and having a chamber therein in a hollow state, wherein a pair of steam supply lines are further connected to both sides of the lower portion of the steam retention pipe to stir the steam supplied from the boiler And the steam is supplied to the inside of the chamber by mixing, and a condensate discharge pipe is provided at a lower vertex of the steam retention pipe.

The present invention also provides a steam retention pipe disposed between an inner pipe and an outer pipe with an inner pipe and an inner pipe to which the organic sludge is charged, A sealed cylindrical steam supply pipe; A gas trap disposed above the outer circumferential surface of the steam supply pipe; A cyclone type separator provided in parallel with the gas collection port; A collecting pipe connecting the gas collector and the separator; An exhaust pipe piped through an upper end of the separator; A condenser connected to an end of the exhaust pipe; A condensate tank connected to a discharge end of the condenser; And a vacuum pump connected to an upper end of the condensate tank to evacuate the inside of the steam supply pipe to 10 ^-1 to 10 ^-2 torr, wherein the inside of the steam supply pipe is hollowed to have an internal steam flow path, A further fixed bearing shaft is installed; A plurality of paddles are fixed on an outer peripheral surface of the rotating shaft in a spiral manner; Wherein the plurality of paddles are provided with an internal steam pipe communicated with the internal stream flow path; And a first separator for separating the exposing end of the discharging end from the collecting tube and filtering the first and second separating membranes.

According to the present invention, it is possible to dry the sludge material efficiently, to dry the sludge material to a moisture content of about 10% or less, more preferably to 7% or less, to shorten the drying time even during drying, The effect can be obtained.

Above all, it is possible to heat in a short time, and by supplying vortexing while stirring, it is possible to reduce the production of condensed water, thereby achieving high thermal efficiency and treatment efficiency at the same time.

1 is an exemplary view of a steam supply apparatus according to the present invention.
FIG. 2 is an exemplary enlarged view showing the main part of FIG.
Fig. 3 is an enlarged view of the main part of Fig. 2. Fig.
4 is an exemplary configuration diagram of a cooker system to which the steam supply device according to the present invention is applied.

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

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

The present invention relates to a cooker system which is an apparatus for drying organic sludge, in particular, a steam supply apparatus applied to a cooker system as described later, wherein a steam supply apparatus of an indirect heating system is provided with a double- The present invention provides a steam supply device capable of heating and drying highly efficiently while minimizing the generation of condensed water by reducing the cooling rate due to heat loss by uniformly heating the entire pipe diameter in a short time.

The steam supply apparatus according to the present invention includes a steam supply pipe (SP), as shown in Figs.

The steam supply pipe (SP) is applied to a cooker system which is a system for heating and drying the organic sludge, and more preferably, it is applied to a vacuum cooker system which is the most preferable example of the present invention.

Particularly, the steam supply pipe SP includes an outer pipe P1, an inner pipe P2 concentrically formed in the outer pipe P1, and a steam retention pipe P3 disposed between the outer pipe P1 and the inner pipe P2. ).

In addition, the inside of the inner pipe P2 is a space to be dried by the steam heat which is supplied from the outside while the object to be processed, that is, the organic material sludge, is supplied and stirred.

The steam retention pipe P3 may be installed at a predetermined interval along the longitudinal direction of the inner and outer pipes P2 and P1. The steam retention pipe P3 may be a hollow type having a chamber C in which steam can be filled, It consists of a closed tube.

In addition, the steam retention pipe (P3) is a tube through which steam is supplied and supplied. The steam retention pipe (P3) is provided at its lower portion with a pair of left and right The steam supply line SP1 is connected.

This steam supply line SP1 is the same as that of FIG. 4 to be described later.

A condensate discharge pipe (CWD) is connected between the steam supply lines (SP1), that is, the lower vertex of the steam retention pipe (P3).

The condensed water discharge pipe (CWD) is a pipe for discharging the condensed water generated in the condensation by cooling the steam.

Particularly, the upper part of the steam retention pipe P3 is firmly fixed to the inner circumferential surface of the outer tube P1 through at least one bracket BR1 and BR2.

Here, a steam injection nozzle N is provided at the tip connecting portion of the steam supply line SP1. A spray hole H is formed in the steam injection nozzle N so as to be radially sprayed.

Accordingly, when steam is supplied, the steam is swirled in the steam retention pipe (P3) as quickly as possible due to the supply pressure from the boiler, thereby shortening the heat transfer time and thereby preventing the cooling. Is reduced.

In other words, it means you can make the most of steam heat.

In addition, since the steam injected through each steam injection nozzle N is mixed while being swirled while forming a vortex while being entangled with each other, a uniform and uniform temperature distribution is maintained throughout the inner chamber C of the steam retention pipe P3 The thermal efficiency is improved by that much.

As described above, since the heat efficiency is increased, the generation of condensed water is reduced by that much, so that the fuel cost can also be reduced.

The steam supply device having such a structure can be applied as it is to a conventional organic material sludge dryer or an organic material sludge cooker system.

More preferably, it is utilized in the vacuum cooker system described below.

As is well known, organic sludge usually contains a large amount of organic matter composed of carbohydrates, proteins, and lipids, which are macromolecular compounds that bind glucose, amino acids, and fatty acids.

Therefore, when this organic material is heated with water at a temperature higher than 180 ° C., it is decomposed into glucose and amino acid by the hydrogen ion (H ⁺ ) and the hydroxide ion (OH ^- ) generated in the water, and this phenomenon is called hydrolysis.

That is, when the organic sludge is heated to a high temperature and a high pressure, the nutrient organic compound chemically bonds with water at 180 to 250 ° C and is hydrolyzed into glucose or amino acid which is a water-soluble substance by breaking the polymer ring and dissolved in water contained in the organic sludge, .

The hydrolyzed organic sludge can be easily separated into an aqueous solution and a solid, which can be utilized as energy resources.

For this hydrolysis, the organic sludge must be heated to 180 to 250 ° C. However, since the water changes from atmospheric pressure to steam at a temperature of 100 ° C or more, water is required to be maintained at a temperature of 180 to 250 ° C, The sludge should be compressed to a high pressure of 10 - 40 atm.

Therefore, there is a disadvantage that the fuel consumption is excessively high and the productivity is low. In this respect, the problems of the prior art have been raised.

Accordingly, the present invention adopts a new concept that completely reverses the existing concept, so that the water generated in the organic sludge during heating is immediately changed into the gas phase without being kept in a liquid state, and is sucked and discharged to improve the treatment efficiency and reduce the fuel cost .

In other words, conventionally, in order to reduce the high heat treatment cost, the organic sludge is rotated and stirred inside the processor. However, since the inside of the sludge must be maintained at a high pressure, a high pressure facility is separately required. Further, a special structure The equipment was very complicated and difficult to control.

However, in the present invention, the concept is completely reversed and newly implemented, thereby maximizing the processing efficiency.

To this end, the present invention introduces a vacuum concept.

In other words, conventionally, the inside of the drying apparatus is kept at a high pressure to keep the water generated from the organic sludge in a liquid state. However, in the present invention, the temperature is raised and the pressure is lowered based on the water phase equilibrium degree, It is characterized by being configured to change to a gas state as soon as water is generated.

According to the phase equilibrium diagram of water, when liquid temperature becomes high, it changes into meteor. When pressure becomes low, it changes into meteor. If temperature is increased and pressure is lowered, it becomes much easier to change into meteorology. This is a different concept from the prior art, and the prior art is a method of simultaneously increasing the temperature while increasing the pressure, so that the generated water remains in the liquid state. This is because the system is configured to separate and separate the liquid phase from the inside of the dry processor, but the present invention is configured to collect and discharge the generated water in a separate manner.

More specifically, as shown in FIG. 4, a preferred vacuum cooker system to which the steam supply device according to the present invention is applied includes a steam supply pipe SP, and the steam supply pipe SP has an internal structure as described above , And both ends are closed to form a closed structure. That is, the steam supply pipe SP includes an outer pipe P1, an inner pipe P2, and a steam retention pipe P3 provided therebetween.

A rotating shaft 120 is rotatably and rotatably fixed to the center of the steam supply pipe SP so that the inside of the rotating shaft 120 is hollow and the other end is closed, And a paddle 134 is fixed to the outer circumferential surface of the rotary shaft 120 in a spiral shape. An internal steam pipe 130 is installed on the paddle 134, and an internal steam pipe (not shown) 130 are connected to each other and communicate with the internal steam passage 132, respectively.

At least one outlet 140 is provided on the lower side of the outer circumferential surface of the steam supply pipe SP.

The outlet 140 is a passage for drying the organic sludge and then discharging the dried sludge.

A driving motor 150 is installed on one side of the steam supply pipe SP and the driving motor 150 is gear-coupled to the rotating shaft 120 to rotate the driving shaft 150.

Accordingly, the supply connection part for supplying steam to the internal steam pipe 130 is connected to the steam supply line SP2 by a rotary joint method in which the supply connection part is rotated and connected.

Of course, since the steam supply line SP1 for supplying steam to the steam supply pipe SP is not a structure in which the steam supply pipe SP is rotated, it is not necessary to connect the steam supply pipe SP in a rotary joint manner. However, in order to improve the structural stability of the fastening unit, It is better if it is fastened in the way.

Therefore, the high-pressure steam supplied through the steam supply pipe (SP) is directly heated and hydrolyzed from the outside of the loaded organic sludge, and the high-pressure steam supplied through the internal steam pipe (130) Since the steam is heated and heated directly in the interior of the organic sludge while rotating, the hydrolysis efficiency is drastically improved.

Moreover, since the steam supply pipe (SP) is configured to have a degree of vacuum of about 10 ^-1 to 10 ^-2 torr, the internal pressure is significantly lower than that of the conventional steam pipe, so that the water generated in hydrolysis immediately evaporates and changes into a gas state.

Then, the changed gas is discharged to the exhaust pipe 186 through the gas collecting port 190 as described later.

On the other hand, an inlet 160 is provided above the outer circumferential surface of the steam supply pipe SP.

The inlet 160 includes an on-off valve and is connected to a pump (not shown) for pressurizing and supplying the organic sludge so that the organic sludge is introduced into the steam supply pipe SP, that is, the steam supply pipe SP .

A relief valve 170 is disposed adjacent to the inlet 160. The relief valve 170 is a valve required to release the internal pressure of the steam supply pipe SP, that is, the vacuum.

Further, a separator 180 having an opening / closing control valve 182 is further provided on the outer circumferential surface of the steam supply pipe SP. The separator 180 may have a type of cyclone.

That is, the first separator 184 is embedded in the upper end of the separator 180 and the exhaust pipe 186 passing through the first separator 184 and the upper end of the separator 180, And the end of the exhaust pipe 186 is surrounded by the second separating membrane 188.

At this time, the first and second separation membranes 184 and 188 are filters of a kind which are discharged only in a gaseous state, and allow foreign matters to be filtered.

In addition, a gas trap 190 is installed on the side of the separator 180 and a collecting pipe 192 is connected to the gas collecting port 190. The end of the collecting pipe 192 is connected to the separator 180 so as not to penetrate through the second separation membrane 188. In addition,

It is a matter of course that the separator 180, the gas collector 190, the relief valve 170, and the inlet 160 are installed so as not to interfere with the steam supply pipe SP.

The gas generated inside the steam supply pipe SP is raised to the collecting pipe 192 through the gas collecting port 190 and discharged from the end of the collecting pipe 192 into the separator 180, In the radial direction to obtain a cyclone effect.

Then, the relatively heavy solid substances (foreign substances) contained in the trapping gas are separated from the gas and then fall down to the bottom of the separator 180, and the remaining foreign substances, which are relatively light and moved together with the gas, (184, 188), and only the pure gas is exhausted through the exhaust pipe (186).

On the other hand, the exhaust pipe 186 is connected to the condenser 200.

The condenser 200 functions to radiate and condense the high-temperature gas exhausted through the exhaust pipe 186 and to cool the exhaust pipe 186 by heat-exchanging the exhaust gas.

A condensate tank 300 is connected to a discharge end of the condenser 200 and a vacuum pump 400 is connected to an upper end of the condensate tank 300.

At this time, it is a matter of course that a valve for opening and closing must be installed in the connection line of the condenser 200, the condensate tank 300, and the vacuum pump 400, respectively.

The vacuum pump 400 is connected to the condenser 200 and the exhaust pipe 186 communicated with the condensate tank 300 so that the interior of the steam supply pipe SP is vacuumed by the vacuum degree described above.

Accordingly, the exhausted gas is condensed to be converted into condensed water. Since the condensed water is collected in the condensate tank 300, the moisture contained in the organic sludge can be almost completely separated and removed, According to the present invention, it is possible to further reduce the organic sludge drying efficiency to about 7% as compared with the conventional case where the water content is maintained at about 10% or more.

100: drying processor 200: condenser
300: condensate tank 400: vacuum pump

Claims (3)

A feeding device for supplying steam in a cooker system for drying organic sludge,
An inner pipe into which organic sludge is charged;
An outer tube covering the outer tube with a gap concentric with the inner tube;
A steam retention pipe disposed between the inner tube and the outer tube and having a chamber in a hollow state therein,
A pair of steam supply lines are further connected to both sides of the lower portion of the steam retention pipe to mix and mix steam supplied from the boiler to inject the mixture into the chamber,
And a condensate discharge pipe is provided at a lower vertex of the steam retention pipe.
An outer tube provided with an inner tube and an inner tube to which the organic sludge is charged, an outer tube provided between the inner tube and the outer tube, and a steam retention tube disposed between the inner tube and the outer tube and supplied with steam at 200 to 250 ° C, Supply pipe; A gas trap disposed above the outer circumferential surface of the steam supply pipe; A cyclone type separator provided in parallel with the gas collection port; A collecting pipe connecting the gas collector and the separator; An exhaust pipe piped through an upper end of the separator; A condenser connected to an end of the exhaust pipe; A condensate tank connected to a discharge end of the condenser; And a vacuum pump connected to an upper end of the condensate tank to evacuate the inside of the steam supply pipe to 10 ^-1 to 10 ^-2 torr,
Wherein the steam supply pipe is hollow and has an internal steam flow path, and further includes a rotation shaft rotatably fixed to the steam supply pipe;
A plurality of paddles are fixed on an outer peripheral surface of the rotating shaft in a spiral manner;
Wherein the plurality of paddles are provided with an internal steam pipe communicated with the internal stream flow path;
Wherein the first and second separation membranes are further provided at the inner upper end of the separator to isolate the exposing end of the discharge end from the collection pipe and filter the separated ends.
The method of claim 2,
And a relief valve for relieving internal pressure is further provided at a part of the outer circumferential surface of the steam supply pipe, and a relief valve for relieving the internal pressure is further provided at a lower portion of the separator, wherein an opening / closing control valve for recovering solid- Features a cooker system.

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