KR101584942B1 - Dry type desulfuriation apparatus having reusing unit - Google Patents

Abstract

Disclosed is a dry-type desulfurization apparatus comprising a regeneration unit. The disclosed dry-type desulfurization apparatus comprises: a reactor in which a desulfurizing agent is filled in, a gas inlet is formed in a lower part, a treat gas outlet is formed on an upper part, and desulfurization with the desulfurizing agent occurs after introduction of biogas through the gas inlet; and a regeneration unit where desulfurization performance of the desulfurizing agent recovers via a reaction between the oxygen and the desulfurizing agent in the reactor after insertion of oxygen or air containing oxygen through the gas inlet.

Description

[0001] DRY TYPE DESULFURATION APPARATUS HAVING REUSING UNIT [0002]

The present invention relates to a dry desulfurization apparatus, and more particularly, to a dry desulfurization apparatus having a regeneration unit capable of regenerating a desulfurizing agent.

The treatment of excess sludge from the sewage treatment plant is carried out by recovering the biogas using the anaerobic digestion tank and reducing it. The biogas generated at this time contains malodor of various components, and hydrogen sulfide is removed through the desulfurization device. An example of a conventional desulfurization apparatus for removing hydrogen sulfide is disclosed in Japanese Patent Application No. 10-1127570 entitled " Multistage Dry Desulfurization Apparatus ".

The conventional dry type desulfurization apparatus as described above forms an upward flow in the lower part of the reaction tank and reacts with a desulfurization agent filled in the inside of the reaction vessel and then discharged to the upper part. At this time, it is important for the desulfurization reaction that the desulfurizing agent and the biogas are efficiently contacted by the even distribution.

For this purpose, in the conventional desulfurization apparatus, a coarse gravel or the like is disposed at the lower part of the reaction vessel for uniformly distributing the biogas introduced into the inside thereof. However, even in this case, uniform uniform distribution over the entire area can not be ensured, and moisture generated in the desulfurization reaction and moisture contained in the incoming biogas are in contact with each other, failing to function properly.

In addition, when the waste desulfurizing agent is replaced, the lower gravel layer and the desulfurizing agent are mixed and discharged. Therefore, the separation operation is required during the waste treatment, which increases the time and cost.

The present applicant has proposed a dry type desulfurization apparatus capable of uniformly distributing and supplying the biogas flowing into the inside of the reactor to the inside of the reactor by installing a porous double strainer in the lower part of the reactor to solve such a problem (Korean Patent No. 10- 1413908).

However, since the dry desulfurization apparatus disclosed in the Japanese Patent No. 10-1413908 has a short lifetime of the desulfurizing agent, it is required to frequently replace the desulfurizing agent, so that the operation cost is enormous.

Accordingly, the Applicant has continued to develop a more improved type of dry desulfurization apparatus without satisfying the dry desulfurization apparatus disclosed in the Japanese Patent No. 10-1413908, and thus the present invention has been derived.

The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to efficiently regenerate a desulfurizing agent, thereby prolonging the life of the desulfurizing agent to increase the replacement cycle, It is an object of the present invention to provide a dry desulfurization apparatus having a regeneration unit having an improved structure for extracting the desulfurized gas.

In order to attain the above object, a dry desulfurization apparatus having a regeneration unit according to the present invention includes a desulfurizing agent, a gas inlet formed at a lower portion thereof, a process gas outlet formed at an upper portion thereof, A reaction tank in which a desulfurization reaction occurs with the desulfurizing agent when the biogas is introduced; And a regeneration unit that injects oxygen or oxygen-containing air through the gas inlet and reacts the oxygen with the desulfurizing agent in the reaction tank to recover the desulfurization performance of the desulfurizing agent.

And a double strainer coupled to a lower portion of the reaction tank to distribute the biogas flowing through the gas inlet or the oxygen to the desulfurizer and distribute the same.

The regeneration unit may be configured to include an air injector or an oxygen injector.

The regeneration unit may further include a water-cooled cooling unit for cooling the reaction heat generated by the regeneration reaction of the desulfurizing agent and the air containing oxygen or oxygen.

Wherein the water-cooled cooling unit is installed at an upper portion of the reaction tank and has a cooling water jetting port for jetting cooling water to the desulfurizing agent side; A cooling water supply passage for supplying cooling water to the cooling water jet opening; A cooling water opening / closing valve provided on the cooling water supply passage; A temperature sensor installed in the reaction tank for detecting the temperature of the reaction heat due to the regeneration reaction; And a cooling water controller that opens the cooling water opening / closing valve when the temperature detected by the temperature sensor is higher than a predetermined temperature and blocks the cooling water opening / closing valve if the temperature is lower than a predetermined temperature.

Wherein the cooling water passes through the desulfurizing agent to cool the desulfurizing agent and the cooling water having passed through the desulfurizing agent contains a sulfur component generated by the regeneration reaction and the cooling water containing the sulfur component collects So that a drain can be formed.
A first flow path connected to the gas inlet to supply the biogas to the reaction tank and having a first opening / closing valve; A second flow path connected to the process gas discharge port to discharge the processed biogas after the desulfurization reaction from the reaction tank and having a second open / close valve; A third flow path connecting the air injector or the oxygen injector to the gas inlet to supply the oxygen or the oxygen-containing air to the reaction tank, and having a third opening / closing valve; A fourth flow path provided to be connected to the process gas outlet so as to discharge the oxygen-containing air or oxygen-containing air after the regeneration reaction from the reaction, and having a fourth open / close valve; Closing the first open / close valve and the second open / close valve and shutting off the third open / close valve and the fourth open / close valve during the desulfurizing step, and during the regeneration step, the first open / close valve and the second open / Closing the valve, and opening the third on-off valve and the fourth on-off valve.

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According to the above description, the lifetime of the desulfurizing agent of the dry desulfurization apparatus is closely related to the concentration of the introduced hydrogen sulfide, and the reactor is designed by setting the replacement cycle every 3 to 4 months in consideration of maintenance. However, It is possible to increase the replacement steam of the desulfurizing agent by providing the regeneration unit capable of recovering the desulfurization performance of the desulfurizing agent, thereby remarkably reducing the operating cost due to the frequent replacement of the desulfurizing agent.

In particular, the concentration of hydrogen sulfide in the biogas varies widely depending on the inflow characteristics of the anaerobic digestion tank, so that it is difficult to estimate the replacement cycle of the degassing agent. In addition, stable desulfurization efficiency could not be obtained due to the amount of the influent load on the desulfurizing agent. However, according to the present invention, it is possible to cope with such a variation width through a periodic regeneration process, and it is possible not only to obtain a result of easily estimating the replacement period of the desulfurizing agent, but also to obtain a stable desulfurization efficiency.

In addition, the present invention has the effect that the oxygen supplied for the regeneration of the desulfurizing agent is injected through the double strainer to be supplied to the desulfurizing agent, thereby more actively regenerating reaction with the desulfurizing agent, thereby improving the desulfurization efficiency.

Particularly, the present invention can efficiently and stably regenerate the desulfurizing agent by spraying the cooling water in the regeneration process, and also allows the cooling water to separate the sulfur components, which can be used as fertilizer, from the desulfurizing agent while passing through the desulfurizing agent, It is possible to extract sulfur components that can be more easily utilized as fertilizer.

1 is a schematic view showing the construction of a dry desulfurization apparatus having a regeneration unit according to an embodiment of the present invention,
Fig. 2 is a projection perspective view of a part of the structure of the dry desulfurization apparatus of Fig. 1,
3 is a plan view showing the construction of the double strainer according to the present invention,
4 is an exploded perspective view of the double strainer according to the present invention,
FIG. 5 is an exemplary view showing a biogas distribution process of the double strainer according to the present invention,
Fig. 6 is a control block diagram of a dry desulfurization apparatus equipped with a regeneration unit of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Also in the figures, the thickness of the components is exaggerated for an effective description of the technical content.

Embodiments described herein will be described with reference to cross-sectional views and / or plan views that are ideal illustrations of the present invention. In the drawings, the thicknesses of the films and regions are exaggerated for an effective description of the technical content. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are produced according to the manufacturing process. For example, the etched area shown at right angles may be rounded or may have a shape with a certain curvature. Thus, the regions illustrated in the figures have attributes, and the shapes of the regions illustrated in the figures are intended to illustrate specific forms of regions of the elements and are not intended to limit the scope of the invention. Although the terms first, second, etc. have been used in various embodiments of the present disclosure to describe various components, these components should not be limited by these terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprises" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some instances, it should be noted that portions of the invention that are not commonly known in the description of the invention and are not significantly related to the invention do not describe confusing reasons to explain the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a desulfurization apparatus having a regeneration unit according to an embodiment of the present invention will be described with reference to the drawings.

1 is a schematic view showing the construction of a dry desulfurization apparatus 100 having a regeneration unit according to the present invention. As shown in the figure, the desulfurizing agent A is filled in the reaction tank 110 to remove the sulfide gas contained in the biogas G1 flowing down from the bottom of the reaction tank 110, and the process gas G2 is discharged upward (desulfurization step) . In addition, the present invention resupplies the desulfurization performance of the desulfurizing agent (A) by supplying oxygen or air from the lower part to the desulfurizing agent (A) whose sulfur compound removal performance is lowered, and discharges unreacted oxygen or air to the upper part (regeneration step). The present invention provides a desulfurization process for removing sulfide gas from a biogas (G1) through a desulfurization process and periodically performs a regeneration process for regenerating the desulfurization performance of the desulfurization agent (A). The desulfurization process and the regeneration process are independently performed .

The dry desulfurization apparatus 100 of the present invention comprises a reaction tank 110 in which a desulfurizing agent a is filled and a double strainer 130 disposed in an inner lower portion of the reaction tank 110 to uniformly distribute and supply the biogas G1, And regeneration units 141 and 143 for regenerating the desulfurizing agent A by injecting oxygen or air into the reaction vessel 110.

The reaction tank (110) forms a space filled with the desulfurizing agent (A). An upper part of the reaction tank 110 is provided with a desulfurizing agent inlet 111 into which a desulfurizing agent A is introduced and an upper part of the reaction vessel 110 is filled with a processing gas G2 from which sulfur compounds are removed, And a process gas outlet 113 through which the air G3 is discharged to the outside. A gas inlet 120 is provided in the lower part of the reaction tank 110 to introduce the biogas G1 into the reaction tank 110 for the desulfurization process or to introduce oxygen or air into the reaction tank 110 for the regeneration process. Respectively.

In addition, the lower part of the reaction tank 110 is provided with a drain hole 115 through which reaction water generated during the desulfurization reaction of the desulfurizer A and the biogas G1 is discharged to the outside, It is used for discharging cooling water. At this time, the drain hole 115 is provided with a valve 116 so that the drain hole 115 can be opened and closed according to the user's operation. However, the valve 116 may be constituted by a solenoid valve.

A filter material outlet 117 capable of discharging a waste desulfurizing agent having a reduced desulfurization capability is provided on a sidewall of the reaction tank 110. A plurality of support frames 119 may be provided on the lower part of the reaction tank 110 to support the reaction tank 110 upright against the ground.

Referring to FIG. 2, the gas inlet 120 is coupled to the bottom surface of the reaction tank 110. The gas inlet 120 is connected to the bottom of the reaction vessel 110 so that the biogas G1 is supplied to the desulfurizer A side without reacting with the reaction water and the reaction water W or with the cooling water and the biogas G1 or oxygen, .

The gas inlet 120 includes a gas guide tube 121 inserted into the bottom surface of the gas guide tube 121 at a predetermined length and a blocking cover 12 spaced from the gas guide tube 121. The blocking cover 123 and the gas guide tube 12 (Not shown).

The gas guide pipe 121 is provided in a tubular shape having a predetermined length and is inserted into the reaction vessel 110 through the lower portion of the reaction vessel 110. At this time, the length of the gas guide pipe 121 is set so that the length inserted into the reaction tank 110 exceeds the maximum receiving depth of the reaction water W or the cooling water accumulated on the bottom surface of the reaction tank 110. The biogas G1 or oxygen (or air containing oxygen) discharged to the upper portion of the gas guide pipe 121 is not brought into contact with the reaction water W or the cooling water.

The shutoff cover 123 is connected to the upper end of the gas guide pipe 121 opened at the top so that a reaction gas generated in the desulfurization reaction between the desulfurizing agent A and the biogas G1 in the reaction tank 110 The cooling water flowing down from the upper part of the reaction tank 110 to the lower part of the reaction tube 110 flows into the gas guide pipe 121 during the regeneration process It blocks.

Accordingly, the biogas G1 or oxygen is prevented from contacting with the reaction water W or the cooling water before contacting with the desulfurizing agent A, thereby allowing the desulfurization reaction or the regeneration reaction to proceed smoothly.

The gas guide tube 121 and the blocking cover 123 are joined by the supporting leg 125. A plurality of support legs 125 extend upwardly at regular intervals along the upper outer periphery of the gas guide tube 121 to be engaged with the blocking cover 123. A gas discharge hole 127 is formed at a distance between the plurality of support legs 125 so that the biogas G1 or oxygen moved through the gas guide pipe 121 is introduced into the reaction tank 110.

The double strainer 130 is connected to the inner lower portion of the reaction tank 110 and is supplied with the biogas G1 or oxygen (or air containing oxygen) discharged from the gas inlet 120 equally to the desulfurizer A . The double strainer 130 is provided with a lower strainer 131 and an upper strainer 133 arranged in the transverse direction in the reaction tank 110.

3 to 5, the lower strainer 131 and the upper strainer 133 are disposed in the transverse direction in the reaction vessel 110 at a predetermined interval. The lower strainer 131 and the upper strainer 133 are provided corresponding to the area of the reaction tank 110 and are disposed in a path of movement of the biogas G1 or oxygen (or air containing oxygen) discharged from the gas inlet 120 .

The lower strainer 131 and the upper strainer 133 are provided with a metal plate. The lower strainer 131 is provided with a plurality of lower slits 131a at regular intervals on the plate surface thereof and the upper strainer 133 is provided with a plurality of upper moving holes 133a at regular intervals.

The lower slit 131a is provided in the form of an elliptical long hole having a predetermined length l and the upper moving hole 133a is provided in a circular shape having a constant diameter r. At this time, the length 11 of the lower slit 131a is formed to correspond to the arrangement interval of 2 to 3 upper moving holes 133a.

Here, the plurality of lower slits 131a and the plurality of upper moving holes 133a are alternately arranged so as not to be arranged coaxially with each other. As shown in FIG. 3, the lower slit 131a is disposed between the upper moving holes 133a when viewed from above.

When the biogas G1 flows in the lower part of the reaction tank 110 during the desulfurization process, the biogas G1 passes through the lower slit 131a and then strikes against the wall surface of the upper strainer 133, G1 are dispersed and distributed to the upper moving holes 133a disposed on both sides.

The biogas G1 distributed to the plurality of lower slits 131a is supplied to the upper strainer 133 and dispersed into the plurality of upper moving holes 133a. So that they are uniformly distributed and supplied to all the regions. Therefore, the biogas G1 can be evenly contacted with the desulfurizing agent in the entire region of the reaction tank 110. Since the desulfurization reaction occurs uniformly, the efficiency of removing the sulfur compounds increases, and the reaction rate can also be increased.

When oxygen (oxygen-containing air) flows in the lower part of the reaction tank 110 during the regeneration process, it is uniformly distributed throughout the reaction tank 110 while passing through the lower strainer 131 and the upper strainer 133 So that the regeneration reaction of oxygen and the desulfurizing agent can be efficiently performed.

The desulfurizing agent A filled in the reaction vessel 110 of the present invention may be made of a desulfurizing agent containing a common iron component and the desulfurizing agent A filled in the reaction vessel 110 may be a hydrogen sulfide To remove hydrogen sulfide.

The desulfurization reaction of the desulfurizing agent (A) and the hydrogen sulfide is performed in the following manner.

2Fe (OH) ₃ + 3H ₂ S -----------> 2FeS + 6H ₂ O

The lifetime of the desulfurizing agent (A) is closely related to the concentration of the incoming hydrogen sulfide, and should be replaced when the reaction with iron is no longer possible. Generally, the desulfurizing agent which has a lowered desulfurization efficiency through chemical reaction with hydrogen sulfide in the inflow biogas is classified as general waste and is buried.

When the sulfur compound removal performance of the desulfurizer (A) is lowered, the desulfurization performance of the desulfurizer (A) can be restored through a regeneration process in which the desulfurization process is stopped and oxygen (or air) is supplied.

For this regeneration process, the dry desulfurization apparatus of the present invention comprises regeneration units 141 and 146.

The regeneration units 141 and 146 inject oxygen (or oxygen-containing air, hereinafter referred to as oxygen) through the gas inlet 120 to react with the desulfurizer A to recover the desulfurization performance of the desulfurizer A .

The regeneration units 141 and 146 are composed of an air injector 141 and a water-cooled cooling unit 146.

The air injector 141 is a device capable of injecting air, such as a compressor, and is formed to be connected to the gas inlet 120. Accordingly, the air from the air injector 141 can be injected into the reaction tank 110 through the gas inlet 120 and supplied to the desulfurizing agent A.

When air is supplied to the desulfurizing agent (A), the desulfurizing agent (A) and air are regenerated, and the reaction is as follows.

_{2FeS + 3/2 O 2 + 3H 2} O ------> 2Fe (OH) 3 + 2S

However, this regeneration reaction is an exothermic reaction, a fire may occur due to the roughing action of the sulfur component, and the desulfurizing agent may be damaged.

Accordingly, the regeneration unit of the dry desulfurization apparatus of the present invention includes a water-cooled cooling unit 146. [

The water-cooled cooling unit 146 is provided at an upper portion of the reaction tank 110 and includes a cooling water jetting port 144 for jetting cooling water (water) toward the desulfurizing agent A, a cooling water supply channel P5 for supplying cooling water to the cooling water jetting port 144 A temperature sensor 145 provided in the reaction tank 110 for detecting the temperature of the reflected heat due to the regeneration reaction, and a cooling water opening / closing valve P5 provided on the cooling water supply passage, And a cooling water controller 146 for opening the cooling water opening / closing valve P5 when the temperature is above the predetermined temperature and shutting off the cooling water opening / closing valve P5 if the temperature is lower than the predetermined temperature.

The water-cooled cooling unit 146 having the above-described configuration can cool the reaction heat generated during the regeneration reaction by injecting cooling water. At this time, for example, when the temperature of the reaction heat detected from the temperature sensor 145 is equal to or higher than the set temperature (about 50 degrees), the cooling water opening / closing valve P5 is automatically opened and the cooling water is injected into the desulfurizing agent A to cool the reaction heat If the temperature is lower than the set temperature, the cooling water opening / closing valve P5 is closed to stop the supply of the cooling water.

In the dry desulfurization apparatus of the present invention, the hydrogen sulfide is removed from the biogas through the desulfurization process, the treated biogas is transferred to the next process, and when the desulfurization performance of the desulfurizer (A) The desulfurization performance is restored, which can be referred to as a regeneration process.

In the present invention, the desulfurization process and the regeneration process are independently performed. To this end, the first flow path P1 is connected to the gas inlet 120 to supply the biogas G1, The second gas passage P2 is connected to the process gas outlet 113 so that the gas G2 is transferred to the next process. The gas inlet 120 and the air injector 141 are connected by the third gas passage P2. And a fourth flow path P4 is connected to the process gas outlet 113 so as to discharge unreacted oxygen to the outside during the regeneration process.

The first, second, third, and fourth opening / closing valves V1, V2, V3, and V4 are installed on the first, second, third, and fourth flow paths P1, P2, P3,

Hereinafter, a desulfurization process and a regeneration process will be described with reference to FIG. 1, using a dry desulfurization apparatus according to an embodiment of the present invention.

In the desulfurization apparatus of the present invention, the third opening / closing valve V3, the fourth opening / closing valve V3 and the cooling water opening / closing valve V5 are shut off and the first opening / closing valve V1 and the second opening / The biogas G1 flows into the reaction tank 110 through the gas inlet 120 via the first flow path P1 and is uniformly dispersed in the desulfurizing agent A through the double strainer 130 The hydrogen sulfide is removed from the biogas G1 by the desulfurizing reaction between the biogas G1 and the desulfurizing agent A and the processed biogas G1 is transferred to the next process through the second flow path P2 .

 In addition, the reaction water generated in the desulfurization reaction falls down to the lower part of the reaction tank 110, and the reaction water W can be discharged through the drain 115.

On the other hand, if the desulfurization step is operated for a long time, the desulfurization performance of the desulfurizing agent (A) is lowered, thereby increasing the concentration of the hydrogen sulfide in the treated biogas. Therefore, when the desulfurization performance of the desulfurizing agent (A) is lowered, the desulfurization apparatus of the present invention stops the desulfurization process and operates as a regeneration process.

In the dry desulfurization apparatus of the present invention, the first on-off valve V1 and the second on-off valve V2 are shut off and the third on-off valve V3 and the fourth on- The air of the injector 141 flows into the reaction tank 110 through the third flow path P3 and the gas inlet 120 and the air is uniformly dispersed and contacted to the desulfurizing agent A via the double strainer 130, The desulfurizing performance of the desulfurizing agent (A) is restored by regenerating the air with the lowered desulfurizing agent (A).

At this time, the temperature of the reaction tank 110 is raised by the reaction heat generated in the regeneration reaction, the temperature sensor 145 senses the heat of the reaction tank, and the temperature sensed by the temperature sensor 145 reaches a predetermined temperature The cooling water P5 may be sprayed to the desulfurizing agent A side through the cooling water injection opening 144 to cool the reaction heat by opening the cooling water opening and closing valve V5.

The cooling water collected in the lower part of the reaction tank 110 contains the sulfur component generated by the regeneration reaction while passing through the desulfurizing agent A, The cooling water including the sulfur component discharged through the drain hole 115 can be utilized as a raw material for the fertilizer.

The first to fourth open / close valves V1, V2, V3, and V4 are passive valves. The first to fourth open / close valves V1, V2, V3, The first to fourth open / close valves V1, V2, V3, and V4 may be opened and closed by a manual operation of the operator so that the desulfurization process and the regeneration process can be automatically switched. And a control unit 150 configured to control the valve.

The control unit 150 can be programmed to operate the desulfurization process and automatically operate the regeneration process according to a predetermined cycle. In this case, the third and fourth valves V3 and V3, The first and second open / close valves V1 and V2 are closed so that the first and second open / close valves V1 and V2 are opened. In the regeneration process, the first and second open / And the third on-off valve V3 and the fourth on-off valve V4 can be controlled to be opened.

6, the control unit 150 may include a cooling water controller 146 for controlling the cooling water opening / closing valve V5. The controller 150 and the cooling water controller 146 may be separately provided Of course.

Although not shown, the controller 150 may control the operation of the air injector 141, may operate the air injector 141 during the regeneration process, stop the air injector 141 during the desulfurization process, can do.

In the meantime, the present invention has been described with reference to the structure in which the air injector 141 is installed to supply air into the reaction tank 110 to recover the desulfurization performance of the desulfurizer A by the regeneration reaction of air and the desulfurizer A, A) is regenerated by the reaction between oxygen and the desulfurizing agent (A), it is needless to say that the air injector 141 can be replaced with an oxygen injector capable of supplying oxygen, such as an ordinary oxygen tank or an oxygen generator.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that many changes and modifications of the present invention can be made without departing from the spirit and scope of the appended claims. Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

110 ... Reactor
111 ... Desulfurization agent inlet
113 ... process gas outlet
115 ... drain
117 ... media outlet
119 ... support frame
120 ... gas inlet
130 ... double strainer
131 ... lower strainer
141 ... air injector
143 ... water-cooled cooling section
144 ... Cooling water nozzle
145 ... Temperature sensor
146 ... Coolant controller
150 ... control unit

Claims (7)

A desulfurizing agent is filled in the inside thereof, a gas inlet is formed in a lower portion thereof, a processing gas outlet is formed in an upper portion thereof, and a biogas is introduced through the gas inlet to cause a desulfurizing reaction with the desulfurizing agent A reaction tank;
And a regeneration unit that injects oxygen or oxygen-containing air through the gas inlet and reacts the oxygen with the desulfurizing agent in the reaction tank to recover the desulfurizing performance of the desulfurizing agent,
Wherein the reproducing unit comprises:
An air injector or an oxygen injector; And
And a water-cooled cooling unit for cooling the reaction heat generated by the regeneration reaction of the desulfurizing agent and the air containing oxygen or oxygen.
The method according to claim 1,
Further comprising: a double strainer coupled to a lower portion of the reaction tank to distribute the biogas flowing through the gas inlet or the oxygen to the desulfurizer and distribute the same.


delete delete The method according to claim 1,
The water-
A cooling water jetting port provided at an upper portion of the reaction tank for jetting cooling water to the desulfurizing agent side;
A cooling water supply passage for supplying cooling water to the cooling water jet opening;
A cooling water opening / closing valve provided on the cooling water supply passage;
A temperature sensor installed in the reaction tank for detecting the temperature of the reaction heat due to the regeneration reaction; And
And a cooling water controller that opens the cooling water opening / closing valve when the temperature detected by the temperature sensor is higher than a predetermined temperature, and blocks the cooling water opening / closing valve if the temperature is lower than a predetermined temperature.
6. The method of claim 5,
Wherein the cooling water passes through the desulfurizing agent to cool the desulfurizing agent, the cooling water having passed through the desulfurizing agent contains a sulfur component generated by the regeneration reaction,
And a drain port through which the cooling water including the sulfur component is collected is formed in a lower portion of the reaction tank.
6. The method of claim 5,
A first flow path connected to the gas inlet to supply the biogas to the reaction tank and having a first opening / closing valve;
A second flow path connected to the process gas discharge port to discharge the processed biogas after the desulfurization reaction from the reaction tank and having a second open / close valve;
A third flow path connecting the air injector or the oxygen injector to the gas inlet to supply the oxygen or the oxygen-containing air to the reaction tank, and having a third opening / closing valve;
A fourth flow path provided to be connected to the process gas outlet so as to discharge the oxygen-containing air or oxygen-containing air after the regeneration reaction from the reaction, and having a fourth open / close valve; And
Closing valve and the fourth opening / closing valve during the desulfurizing step, and the first opening / closing valve and the second opening / closing valve are closed during the regeneration step, And the control unit opens the third on-off valve and the fourth on-off valve.

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