KR101002744B1 - Filter Reactor for Removing Toxic Gas using Circulated Catalyst and/or Absorbent Powder - Google Patents

Abstract

The present invention relates to a catalyst / adsorption powder circulating harmful gas removal filter reactor, and more particularly, to contaminate the catalyst / adsorption powder on the filter surface of the reaction chamber, followed by contamination including nitrogen oxides, sulfur oxides, dioxins, and VOCs. By supplying the gas, the catalyst / adsorption powder collected in the filter removes, converts or adsorbs harmful gas components in the polluted gas to receive clean gas, and when the purification efficiency of the polluted gas decreases, it is collected in the filter by backwashing. The catalyst / adsorption powder is separated and supplied to the regeneration chamber under the reaction chamber. In the regeneration chamber, heat is applied to the catalyst / adsorption powder to separate the adsorbed noxious gas component to regenerate the catalyst / adsorption powder, and the separated high concentration of harmful The gas is collected and decomposed separately, and the regenerated catalyst / adsorption powder is supplied back to the reactor by the transfer gas to collect dust. Catalyst / adsorbent powder circulation relates to a noxious gas removal filter, such as to a reactor for the catalyst / water by the circulation without replacement of the adsorbent powder to be continuously.

The present invention provides a filter reactor for removing noxious gas, comprising: a partition wall partitioning an inner space up and down, a contaminated gas inflow pipe installed in communication with the partitioned lower space, and a clean gas discharge pipe installed in communication with the partitioned upper space; A reaction chamber comprising a plurality of rod filters installed below the partition wall; Located in the lower portion of the reaction chamber, the heating unit is installed on the side to heat the inside, and on one side and the other side opposed to the regeneration chamber in communication with the transfer gas inlet pipe and the concentrated gas discharge pipe; A storage chamber positioned below the regeneration chamber and provided at a bottom thereof with a stirring fan driven by a motor, and a plurality of transfer gas injection nozzles configured to inject a transfer gas in a downward direction of an inner center on a side thereof; A circulation tube having one end communicating with a lower portion of the storage chamber and the other end communicating with the polluting gas inlet pipe and supplying the catalyst / adsorption powder of the storage chamber to the polluting gas inlet pipe; A first connecting pipe communicating with a lower portion of the reaction chamber and an upper portion of a regeneration chamber, the first connecting tube being opened and closed by a valve; And a second connecting pipe communicating with a lower portion of the regeneration chamber and an upper portion of the storage chamber, and opened and closed by a valve.

Harmful gas, filter, adsorption, catalyst, powder, removal

Description

Filter Reactor for Removing Toxic Gas using Circulated Catalyst and / or Absorbent Powder}

The present invention relates to a catalyst / adsorption powder circulating harmful gas removal filter reactor, and more particularly, to contaminate the catalyst / adsorption powder on the filter surface of the reaction chamber, followed by contamination including nitrogen oxides, sulfur oxides, dioxins, and VOCs. By supplying gas, the catalyst / adsorption powder collected in the filter removes, converts or adsorbs harmful gas components in the polluted gas to receive clean gas, and when the purification efficiency of the polluted gas decreases, the collected catalyst / The adsorbed powder is separated and supplied to the regeneration chamber below the reaction chamber. In the regeneration chamber, the catalyst / adsorbed powder is regenerated by separating the adsorbed noxious gas component by applying heat to the catalyst / adsorbed powder. Separately collected and decomposed, and the regenerated catalyst / adsorbed powder is fed back into the reactor by the transfer gas to collect dust. Catalyst / adsorbent powder circulation that allows continuous use by the circulation without replacement of the catalyst / adsorbent powder relates to a noxious gas removal filter reactor.

Generally, various harmful gases are generated during product production, disposal, incineration, combustion or gasification. That is, various harmful gases such as nitrogen oxides (NOx), sulfur oxides (SOx), dioxins, and VOCs, which are inevitably generated in the plating process or incineration, or included in the gas produced in the exhaust gas and gasification reaction, are separately purified. Through the exhaust.

There are various methods for purifying the harmful gas, but typically, a method of discharging the harmful gas through the catalyst or the adsorption powder fixed bed reactor is removed, converted or adsorbed, and then discharged. Alternatively, a method of removing, converting or adsorbing a noxious gas is used by passing a filter coated with a catalyst / adsorbent material or a pore body composed of the catalyst / adsorbent material.

Hazardous gas treatment method using the fixed bed, filter or pore body made of such catalyst / adsorption powder initially has a high efficiency of removing harmful gas, but gradually decreases the removal efficiency, after a certain period of time fixed bed, filter or pores made of catalyst / adsorption powder Hazardous gases can be purged by replacing the sieve or re-installing after regeneration. That is, as the harmful gas is saturated in the fixed bed, the filter or the pore body made of the catalyst / adsorbent powder, the purification efficiency decreases, so that the fixed bed, the filter or the pore body made of the catalyst / adsorbent powder should be replaced periodically.

Therefore, there is a need for the development of a new filter reaction apparatus that solves the trouble of replacing the fixed bed, the filter or the pore body made of the catalyst / adsorption powder and enables semi-permanent use.

The catalyst / adsorption powder circulating harmful gas removal filter reactor of the present invention for solving the above problems,

A filter reactor for removing noxious gas, comprising: a partition wall partitioning an inner space up and down, a contaminant gas inflow pipe installed in communication with the partitioned lower space, a clean gas discharge pipe communicated with the partitioned upper space, and the partition wall A reaction chamber comprising a plurality of rod filters installed on a lower side of the reaction chamber; Located in the lower portion of the reaction chamber, the heating unit is installed on the side to heat the inside, and on one side and the other side opposed to the regeneration chamber in communication with the transfer gas inlet pipe and the concentrated gas discharge pipe; A storage chamber positioned below the regeneration chamber and provided at a bottom thereof with a stirring fan driven by a motor, and a plurality of transfer gas injection nozzles configured to inject a transfer gas in a downward direction of an inner center on a side thereof; A circulation tube having one end communicating with a lower portion of the storage chamber and the other end communicating with the polluting gas inlet pipe and supplying the catalyst / adsorption powder of the storage chamber to the polluting gas inlet pipe; A first connecting pipe communicating with a lower portion of the reaction chamber and an upper portion of a regeneration chamber, the first connecting tube being opened and closed by a valve; And a second connecting pipe communicating with a lower portion of the regeneration chamber and an upper portion of the storage chamber, and opened and closed by a valve.

As described in detail above, the catalyst / adsorption powder circulating noxious gas removal filter reactor of the present invention,

The reaction chamber, the regeneration chamber and the storage chamber are systemized together to remove or remove the harmful gas components contained in the polluted gas by the catalyst / adsorption powder material, and the catalyst / adsorption powder in which the harmful gas components are adsorbed is a high temperature regeneration chamber. It is a useful device that can reduce facility cost by enabling continuous use without replacement of catalyst / adsorption powder, such as by re-injection and re-introduction to harmful gas removal reaction.

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

In the filter reactor 10 for removing noxious gas according to the present invention, as shown in FIG. 1, the reaction chamber 20, the regeneration chamber 30, and the storage chamber 40 are installed vertically to react. The catalyst / adsorption powder is lowered by its own weight so as to be supplied to the chamber located below.

In more detail, the reaction chamber 20 formed of the cylinder has partition walls 21 formed horizontally in the middle of the cylinder to partition the reaction chamber internal space up and down. The polluted gas inlet pipe 22 communicates with the partitioned lower space to allow the polluted gas to be introduced or regenerated from the outside. Here, the catalyst / adsorption powder includes the use of a catalyst powder for converting harmful gas into a safe gas and an adsorbent powder for adsorbing harmful components, respectively, or mixed use. In addition, in order to promote the adsorption or catalytic action, as shown in FIG. 2, a reaction heating unit 26 may be installed on the sidewall of the reaction chamber to increase the internal temperature.

Next, a plurality of rod filters 24 are mounted on the partition wall 21 partitioning the reaction chamber internal space. The rod filter 24 is coupled to the partition wall 21 in the lower space of the reaction chamber 20, the upper end is mounted by the partition and the screw coupling so that the replacement can be made easily, the coupling portion is inserted into the packing, etc. It is desirable to make a seal. The rod filter 24 primarily collects the catalyst / adsorption powder to form a catalyst / adsorption powder layer on the surface of the rod filter, and then introduces the pollutant gas into the lower space so that the catalyst / adsorption adheres to the surface of the rod filter. Purified while passing through the powder layer to ensure that only harmless gas components are moved to the upper space, and the filter is formed into a rod to increase the contact area between the contaminated gas and the filter. As the filter used as described above, it is possible to use various filters that can filter the dust, in addition to the use example of increasing the contact area and increasing the purification effect like the rod filter mentioned above.

In addition, in the upper space partitioned by the partition wall, only the clean gas from which harmful components are removed by the reaction of the polluting gas in the lower space is introduced through the rod filter 24, and the introduced clean gas is externally supplied through the clean gas discharge pipe 23. To be discharged.

The reaction chamber 20 of this configuration further includes a backwash nozzle 25 for dedusting and separating the catalyst / adsorbed powder from the surface of the rod filter 24 when the harmful gas purification efficiency is reduced during operation. As shown in FIG. 3A, the harmful gas is reduced by installing a pollutant gas measuring sensor 27 in an upper space partitioned by a partition or a clean gas discharge pipe 23 (hazardous gas component). In order to measure the concentration, the backwash nozzle is located in the upper space of the reaction chamber 20 to discharge the high pressure gas by the valve operation, and backwashing from the inside of the rod filter 24 to the outside is collected on the outside of the catalyst. Desorbs the adsorption powder. That is, when the concentration of the polluted gas contained in the clean gas flowing through the rod filter 24 is out of the reference range, the polluted gas is blocked from entering the reaction chamber 20 and the backwash nozzle 25 is closed. By backwashing through, the catalyst / adsorption powder collected in the rod filter is removed, and then the regenerated catalyst / adsorption powder is introduced into the reaction chamber 20 and attached to the rod filter 24 to improve the purification efficiency of harmful gases. It is to let. As shown in FIG. 3, the reverse nozzles 25 are formed at upper portions corresponding to the rod filters 24 so that injection is performed or formed in a tubular shape in the rod filters 24 as shown in FIGS. 3A and 3B. It is possible to provide a variety of forms, such as by charging the backwash nozzle 25 to be sprayed through a plurality of through-holes formed on the side of the backwash nozzle.

In addition, the reaction chamber 20 may be formed to form a bottom surface of the lower space to the inclined surface to collect the catalyst / adsorption powder accumulated in one side to facilitate the supply to the lower regeneration chamber (30). The inclined surface may be inclined only in one direction so that the collection may be made, but preferably, the inclined surface is formed in a conical shape as a funnel to facilitate the collection.

On the other hand, the regeneration chamber 30 is located below the reaction chamber. The reaction chamber 20 and the regeneration chamber 30 are communicated with each other by the first connecting pipe 60. The two chambers are preferably positioned vertically, as shown in FIG. 1, so that the two chambers are supplied by their own weight. However, the two chambers may be installed horizontally when separate transfer means is provided. The first connecting pipe 60 is equipped with a valve 61 therein to open the valve if necessary so that the catalyst / adsorption powder of the upper reaction chamber is supplied to the lower regeneration chamber.

The regeneration chamber 30 supplied with the catalyst / adsorption powder through the first connecting pipe 60 has a sealed hopper, and the heating unit 31 is installed on the side to generate high heat, thereby adsorbing the harmful substances adsorbed onto the catalyst / adsorption powder. Allow gas components to separate from the catalyst / adsorption powder. In addition, the regeneration chamber 30 is provided with a communication gas inlet pipe 32 on one side, and the concentrated gas discharge pipe 33 is installed in communication with the portion facing the transfer gas inlet pipe separated from the catalyst / adsorption powder Causes harmful gases to be emitted at high concentrations. As such, the harmful gas separated from the catalyst / adsorption powder has a high concentration, so that it can be reused by utilizing it in other fields. In addition, the catalyst / adsorption powder completely regenerated by the separation of the noxious gas is discharged downward by opening the valve 71 of the second connecting pipe 70 communicated with the bottom of the regeneration chamber 30.

The catalyst / adsorption powder regenerated in the regeneration chamber 30 is supplied to the storage chamber 40 by opening the valve 71 of the second connecting pipe 70. In the storage chamber 40, a stirring fan 41 driven by a motor is installed on a bottom surface thereof, and a plurality of transfer gas injection nozzles 42 for injecting a transfer gas in a downward direction of an inner center are formed on a side surface thereof. The stirring fan is for imparting fluidity by stirring the introduced catalyst / adsorption powder, and the injection gas injection nozzle is configured to further increase the fluidity of the catalyst / adsorption powder by high speed injection of the transport gas. The transfer gas injection nozzle 42 is formed in one or a plurality to increase the fluidity in the powder, the injection direction is made in the inclined downward direction as shown in FIG.

The pollutant gas inlet pipe 22 of the storage chamber 40 and the reaction chamber 20 is provided with a circulation pipe 50 in communication with the catalyst / adsorption powder flowing in the storage chamber 40. It is supplied into the reaction chamber through the dust collection to the rod filter. In this case, a valve may be installed at a portion at which the polluted gas inlet pipe and the circulation pipe are joined to selectively supply the catalyst / adsorption powder through the polluted gas or the circulation pipe. Of course, the circulation pipe can be installed by communicating directly into the reaction chamber. In addition, the position where the circulation tube 50 and the storage chamber 40 communicate with each other is positioned at a predetermined length higher than the upper surface of the catalyst / adsorption powder layer loaded on the storage chamber 40 so that the powder layer loaded is inside the circulation tube. It is desirable to prevent the inflow into.

As shown in FIG. 4, the filter reactor 10 may include a plurality of reaction chambers. That is, the reaction chamber is composed of the first reaction chamber 20a and the second reaction chamber 20b, and the upper end of the first connecting pipe 60 connecting the reaction chamber and the regeneration chamber is divided into two and the first reaction, respectively. It is configured to communicate with the lower end of the chamber and the second reaction chamber. At this time, the valve 61 installed in the first connection pipe is installed in each branched portion as shown in the lower regeneration chamber 30 with the time difference between the catalyst / adsorption powder of the two reaction chambers 20a and 20b by sequential opening. ) Can be supplied. Also, although not shown, a valve may be installed in a section in which the branch pipes are joined to simultaneously supply the catalyst / adsorption powder to the regeneration chamber in both reaction chambers.

In addition, the pollutant gas inlet pipe 22 for supplying the pollutant gas to the first and second reaction chambers 20a and 20b is branched in the next section joined to the circulation pipe 50 as shown in the drawing to each reaction chamber. Various piping installations may be made, such as supplying, or branching the contaminated gas inlet pipe first and then communicating the circulation pipes to each other.

In addition, the above-mentioned example is only an example to demonstrate this invention. Therefore, it is obvious that the ordinary skilled in the art to which the present invention pertains uses the partial change with reference to the detailed description.

1 is a schematic cross-sectional view showing a filter reaction device according to an embodiment of the present invention.

2 and 3a are sectional views showing another embodiment of the reaction chamber according to the present invention.

3B is an enlarged view of portion A of FIG. 3A;

Figure 4 is a schematic cross-sectional view showing a filter reaction device according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: Catalyst / Adsorption Powder Circulation Hazardous Gas Removal Filter Reactor

20: reaction chamber

20a: first reaction chamber 20b: second reaction chamber

21: bulkhead 22: polluted gas inlet pipe

23: clean gas discharge pipe 24: rod filter

25: reverse nozzle 26: reaction heating unit

27: polluted gas sensor

30: regeneration chamber

31: heating unit 32: transfer gas inlet pipe

33: concentrated gas discharge pipe

40: storage chamber

41: stirring fan 42: transfer gas injection nozzle

50: circulation tube

60: first connector

61,71: Valve

70: second connector

Claims (5)

In the filter reactor for removing harmful gases, A partition wall 21 partitioning the inner space up and down, a contaminated gas inflow pipe 22 installed in the partitioned lower space, a clean gas discharge pipe 23 installed in the partitioned upper space, and a lower side of the partition wall. A reaction chamber 20 composed of a plurality of rod filters 24 installed; Located in the lower portion of the reaction chamber 20, the heating unit 31 is installed on the side to heat the inside, and one side and the other side facing the transfer gas inlet pipe 32 and the concentrated gas discharge pipe 33 A regeneration chamber 30 in communication with each other; A storage chamber positioned below the regeneration chamber and formed with a stirring fan 41 driven by a motor installed at a bottom thereof, and a plurality of transfer gas injection nozzles 42 for injecting the transfer gas in a downward direction of an inner center on a side surface thereof; 40); A circulation pipe 50 having one end communicating with a lower portion of the storage chamber and the other end communicating with the polluting gas inlet pipe 22 to supply catalyst / adsorption powder of the storage chamber to the polluting gas inlet pipe; A first connecting pipe 60 communicating with a lower portion of the reaction chamber 20 and an upper portion of a regeneration chamber 30 and opening and closing by a valve 61; A second connecting pipe (70) communicating with a lower portion of the regeneration chamber (30) and an upper portion of a storage chamber (40) and opening and closing by a valve (71); In the upper space of the reaction chamber 20, a pollutant gas measuring sensor 27 and a tubular inverted nozzle 25, which are charged in each rod filter 24 and formed with a plurality of through holes, are installed in the purified gas. When the concentration of the contained polluted gas is higher than the set value, the polluted gas is prevented from entering the reaction chamber, and the catalyst / adsorption powder collected on the outer wall of the bag filter by backwashing the backwash nozzle to remove the catalyst, characterized in that / Adsorption powder circulating hazardous gas removal filter reactor. delete The method of claim 1, Catalyst / adsorption powder circulating harmful gas removal filter reactor, characterized in that to promote the reaction by increasing the internal temperature by installing a reaction heating unit 26 on the wall of the reaction chamber (20). The method of claim 1, The reaction chamber (20) and the regeneration chamber (30) is a catalyst / adsorption powder circulating toxic gas removal filter reactor, characterized in that the bottom is formed to be inclined to facilitate the discharge. The method of claim 1, The reaction chamber is composed of a plurality, the first connection pipe 60 is one end is branched to remove the catalyst / adsorption powder circulating harmful gas, characterized in that formed in communication with the lower end of the plurality of reaction chamber (20a, 20b), respectively. Filter reactor.

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