Pretreatment device for SRV furnace gas dry decarburization

Abstract

The utility model discloses a pretreatment device for SRV furnace gas dry decarburization, which comprises a water scrubber and a compressor, the water scrubber is provided with a water scrubber inlet and a water scrubber outlet, the water scrubber inlet is suitable for being communicated with a gas outlet of an SRV furnace, the water scrubber outlet is communicated with a gas inlet of the compressor, and the compressor is communicated with the water scrubber inlet. A gas outlet of the compressor is suitable for being communicated with an inlet of a decarburization adsorption tower; and the dehydration assembly is communicated between the water washing tower and an air inlet of the compressor. According to the pretreatment device for dry decarburization of the SRV furnace gas, the dehydration assembly is arranged between the water washing tower and the compressor to dehydrate and cool the gas, so that the gas entering the inlet of the decarburization adsorption tower is dehydrated and cooled, and the gas is pressurized by the compressor; the requirements of the adsorbent in the decarburization adsorption tower on the working temperature, pressure and water content are met, so that the decarburization effect of the decarburization adsorption tower on the coal gas is improved.

Description

Technical Field

[0001] The present application relates to the technical field of separation and purification of coal gas from a smelting reduction furnace, and in particular to a pretreatment device for dry decarbonization of coal gas from an SRV furnace. Background Art

[0002] At present, smelting reduction is a typical short-process steelmaking process. In the smelting reduction process, an SRV furnace (Smelting-Reducing Vessel, SRV for short) is used. The CO2 concentration of the gas discharged from the SRV furnace is relatively high (about 25% by volume), and the pressure swing adsorption dry decarbonization process does not produce wastewater or waste gas during the production process, which is clean and environmentally friendly. Therefore, the dry decarbonization process is more suitable for the production process of SRV furnace gas. The operation of the pressure swing adsorption dry decarbonization process shows that the decarbonization effect of the SRV furnace gas at the inlet of the decarbonization adsorption tower is better under the conditions of low moisture content, low temperature and high pressure. However, the current moisture content of the SRV furnace gas, the high gas temperature and low operating pressure lead to poor decarbonization effect after the gas enters the decarbonization adsorption tower. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a pretreatment device for dry decarburization of SRV furnace gas, which is capable of reducing the moisture content and temperature of the gas entering the decarburization adsorption tower, increasing the SRV furnace gas pressure, and thereby improving the decarburization effect of the decarburization adsorption tower on the gas.

[0004] According to an embodiment of the present application, a pretreatment device for dry decarbonization of SRV furnace gas includes: a water washing tower and a compressor, the water washing tower is provided with a water washing inlet and a water washing outlet, the water washing inlet is suitable for connecting with the gas outlet of the SRV furnace, the water washing outlet is connected with the air inlet of the compressor, and the air outlet of the compressor is suitable for connecting with the inlet of the decarbonization adsorption tower; a dehydration component, the dehydration component is connected between the water washing tower and the air inlet of the compressor.

[0005] According to an embodiment of the present application, a pretreatment device for dry decarbonization of SRV furnace gas is provided, in which a dehydration component is arranged between a water scrubber and a compressor so that the dehydration group can be used to dehydrate the gas entering the compressor through the water scrubber, thereby achieving dehydration treatment of the gas entering the inlet of the decarbonization adsorption tower. In this way, the water content of the gas entering the decarbonization adsorption tower can be reduced, thereby improving the decarbonization effect of the decarbonization adsorption tower on the gas.

[0006] According to some embodiments of the present application, a pretreatment device for dry decarbonization of SRV furnace gas is provided, wherein the dehydration component includes a dehydration tower and an adsorption element, wherein the dehydration tower is connected between the water washing tower and the air inlet of the compressor, and the adsorption element is located inside the dehydration tower.

[0007] According to a pretreatment device for dry decarbonization of SRV furnace gas in some embodiments of the present application, the adsorption element is filled in the dehydration tower.

[0008] According to some embodiments of the present application, a pretreatment device for dry decarbonization of SRV furnace gas further includes: a cooling component, the cooling component includes a sprayer, the sprayer is arranged in the water washing tower, and the sprayer is used to spray coolant into the water washing tower.

[0009] According to some embodiments of the present application, a pretreatment device for dry decarbonization of SRV furnace gas also includes: a gas distributor, which is located in the water washing tower, and the gas inlet of the gas distributor is connected to the water washing inlet, and the gas outlet of the gas distributor is arranged opposite to the spray port of the sprayer.

[0010] According to some embodiments of the present application, a pretreatment device for dry decarbonization of SRV furnace gas further includes: a demister, which is arranged in the water washing tower and located between the sprayer and the water washing outlet.

[0011] According to some embodiments of the present application, a pretreatment device for dry decarbonization of SRV furnace gas is provided, wherein the cooling assembly further includes: a lean liquid pipe, a solution tank, a water pump and a rich liquid pipe, wherein the lean liquid pipe is connected between the water washing tower and the solution tank, the rich liquid pipe is connected to the sprayer, and the water pump is connected between the rich liquid pipe and the solution tank.

[0012] According to some embodiments of the present application, a pretreatment device for dry decarbonization of SRV furnace gas, the cooling component also includes: a heat exchanger, which is connected to the solution tank and is used to exchange heat with the coolant in the solution tank.

[0013] According to a pretreatment device for dry decarbonization of SRV furnace gas in some embodiments of the present application, a partial structure of the heat exchanger extends into the solution tank.

[0014] According to some embodiments of the present application, a pretreatment device for dry decarbonization of SRV furnace gas is provided, wherein a plurality of the sprayers are provided, and the plurality of the sprayers are spaced apart in the height direction.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of a pretreatment device for dry decarbonization of SRV furnace gas according to some embodiments of the present application. Description of the drawings:

[0019] A pretreatment device 10 for dry decarbonization of SRV furnace gas;

[0020] Water washing tower 1; water washing inlet 11; water washing outlet 12; compressor 2;

[0021] Dehydration component 3; dehydration tower 31; adsorption element 32;

[0022] Cooling assembly 4; sprayer 41; lean liquid pipe 42; solution tank 43; water pump 44; rich liquid pipe 45; heat exchanger 46; gas distributor 5; demister 6; dust removal fan 7. DETAILED DESCRIPTION

[0023] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0024] In this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also include elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or equipment comprising the elements. The term "two or more" includes two or more than two cases.

[0025] Please refer to the following Figure 1 A pretreatment device 10 for dry decarbonization of SRV furnace gas according to an embodiment of the present application is described.

[0026] It is understood that a pretreatment device 10 for dry decarburization of SRV furnace gas can be used in a smelting reduction process. For example, in the smelting reduction process of steel, the SRV furnace will discharge gas after smelting steel. The concentration of CO2 in the gas is relatively high. Therefore, the gas needs to be treated. In some implementations, the gas is decarburized by passing it into a decarburization adsorption tower. For example, using a pressure swing adsorption dry decarburization process, the decarburization effect of the gas at the inlet of the decarburization adsorption tower is better under conditions of low moisture content, low temperature, and high pressure. However, the high moisture content and temperature of the gas entering the decarburization adsorption tower, as well as the low gas pressure, currently result in poor decarburization effect after the gas enters the decarburization adsorption tower.

[0027] In this regard, Figure 1 As shown, the present application proposes a pretreatment device 10 for dry decarbonization of SRV furnace gas. The pretreatment device 10 for dry decarbonization of SRV furnace gas is arranged between the gas outlet of the SRV furnace and the inlet of the decarbonization adsorption tower. The pretreatment device 10 for dry decarbonization of SRV furnace gas includes: a water washing tower 1, a compressor 2 and a dehydration component 3.

[0028] like Figure 1 As shown, the water washing tower 1 is provided with a water washing inlet 11 and a water washing outlet 12. The water washing inlet 11 is suitable for being connected to the gas outlet of the SRV furnace, and the water washing outlet 12 is connected to the air inlet of the compressor 2. The air outlet of the compressor 2 is suitable for being connected to the inlet of the decarbonization adsorption tower, and the dehydration component 3 is connected between the water washing tower 1 and the air inlet of the compressor 2.

[0029] Thus, the coal gas of the SRV furnace enters the water washing tower 1 through the water washing inlet 11. The water washing tower 1 can cool the coal gas and remove impurities to a certain extent, thereby reducing the impurity content and temperature of the coal gas discharged from the water washing outlet 12. Then the coal gas enters the dehydration component 3 through the water washing outlet 12. The dehydration component 3 further dehydrates and cools the coal gas to further reduce the water content and temperature of the coal gas. Then the coal gas is compressed by the compressor 2 to increase the pressure and enter the decarbonization adsorption tower. In this way, it is convenient to use the dehydration component 3 to dehydrate and cool the coal gas entering the compressor 2 through the water washing tower 1, thereby achieving dehydration and cooling of the coal gas entering the decarbonization adsorption tower inlet, reducing the water content and temperature of the coal gas entering the decarbonization adsorption tower; the compressor 2 increases the pressure of the coal gas entering the decarbonization adsorption tower, thereby improving the decarbonization effect of the decarbonization adsorption tower on the coal gas.

[0030] According to an embodiment of the present application, a pretreatment device 10 for dry decarbonization of SRV furnace gas is provided, in which a dehydration component 3 is arranged between a water scrubber 1 and a compressor 2, so that the dehydration component 3 can be used to dehydrate and cool the gas entering the compressor 2 via the water scrubber 1, thereby achieving dehydration and cooling treatment of the gas entering the inlet of the decarbonization adsorption tower, reducing the water content and temperature of the gas entering the decarbonization adsorption tower, and the compressor 2 increases the pressure of the gas entering the decarbonization adsorption tower, thereby improving the decarbonization effect of the decarbonization adsorption tower on the gas.

[0031] In some embodiments, as Figure 1 As shown, the dehydration assembly 3 includes a dehydration tower 31 and an adsorption element 32 . The dehydration tower 31 is connected between the water washing tower 1 and the air inlet of the compressor 2 , and the adsorption element 32 is located inside the dehydration tower 31 .

[0032] Therefore, after the coal gas enters the dehydration tower 31, the dehydration tower 31 can prevent the coal gas from leaking, and the coal gas can be partially adsorbed by the adsorbent 32 to reduce the water content of the coal gas, and then the coal gas is dehydrated to achieve the dehydration treatment of the coal gas entering the inlet of the decarbonization adsorption tower. In this way, the water content of the coal gas entering the decarbonization adsorption tower can be reduced, thereby improving the decarbonization effect of the decarbonization adsorption tower on the coal gas.

[0033] In some implementations, the adsorbent 32 may be a structure capable of adsorbing moisture in the gas, such as activated carbon, activated alumina balls, or molecular sieves.

[0034] In some embodiments, as Figure 1 As shown, the adsorption member 32 is filled in the dehydration tower 31. Thus, by providing the adsorption member 32 filled in the dehydration tower 31, the adsorption member 32 can be more evenly distributed in the dehydration tower 31, thereby improving the dehydration effect of the adsorption member 32.

[0035] In some embodiments, as Figure 1 As shown, a pretreatment device 10 for dry decarbonization of SRV furnace coal gas further includes a cooling assembly 4, which includes a sprayer 41. The sprayer 41 is disposed within a water scrubber 1 and is used to spray coolant into the water scrubber 1. Thus, after the coal gas enters the water scrubber 1, the coolant can be sprayed into the water scrubber 1 to allow the coolant to contact and exchange heat with the coal gas, thereby lowering the temperature of the coal gas and achieving cooling of the coal gas. Furthermore, the placement of the sprayer 41 within the water scrubber 1 does not occupy additional space, and the water scrubber 1 can store the coolant to prevent splashing.

[0036] At the same time, the sprayer 41 is arranged in the water washing tower 1, so that in the transmission direction of the coal gas, the sprayer 41 is located upstream of the dehydration component 3. In this way, the dehydration component 3 can dehydrate the cooled coal gas to prevent the coal gas from being contaminated with water vapor when it comes into contact with the coolant.

[0037] In some embodiments, as Figure 1 As shown, a pretreatment device 10 for dry decarbonization of SRV furnace gas also includes: a gas distributor 5, the gas distributor 5 is located in the water washing tower 1, and the gas inlet of the gas distributor 5 is connected to the water washing inlet 11, and the gas outlet of the gas distributor 5 is arranged opposite to the spray port of the sprayer 41.

[0038] Therefore, by setting up a gas distributor 5, the coal gas is sprayed toward the spray port of the sprayer 41 through the gas distributor 5, thereby increasing the contact probability between the coal gas and the coolant, so as to better achieve the cooling of the coal gas. At the same time, the gas distributor 5 can make the coal gas more evenly dispersed to improve the cooling effect of the coal gas.

[0039] In some embodiments, as Figure 1 As shown, a pretreatment device 10 for dry decarbonization of SRV furnace coal gas further includes a demister 6, which is disposed within the water scrubber 1 and between the sprayer 41 and the water scrubber outlet 12. Thus, by providing the demister 6, the foam of the coal gas at the water scrubber outlet 12 is reduced by the demister 6, thereby reducing the water content of the coal gas to a certain extent.

[0040] In some embodiments, as Figure 1 As shown, the cooling assembly 4 also includes: a lean liquid pipe 42, a solution tank 43, a water pump 44 and a rich liquid pipe 45. The lean liquid pipe 42 is connected between the water washing tower 1 and the solution tank 43, the rich liquid pipe 45 is connected to the sprayer 41, and the water pump 44 is connected between the rich liquid pipe 45 and the solution tank 43.

[0041] It can be understood that the solution tank 43 can contain water or other liquid coolant. In actual use, the water pump 44 pumps the coolant in the solution tank 43 into the rich liquid pipe 45, so that the coolant enters the sprayer 41 from the rich liquid pipe 45, and then the sprayer 41 sprays the coolant into the water scrubber 1 to cool the coal gas. Then the coolant flows back to the solution tank 43 through the lean liquid pipe 42. In this way, the coolant can complete the circulation, thereby achieving the cooling of the coal gas.

[0042] In some embodiments, as Figure 1 As shown, the cooling assembly 4 further includes a heat exchanger 46 , which is connected to the solution tank 43 and is used to exchange heat with the coolant in the solution tank 43 .

[0043] It can be understood that when the coolant flows back to the solution tank 43 through the lean liquid pipe 42, the heat exchange between the returning coolant and the coal gas will cause the temperature of the coolant to rise. Therefore, a heat exchanger 46 for exchanging heat with the coolant in the solution tank 43 is provided to exchange heat with the coolant flowing back to the solution tank 43, thereby reducing the temperature of the coolant in the solution tank 43, and making it easier for the coolant in the solution tank 43 to enter the sprayer 41 again through the rich liquid pipe 45 to cool the coal gas.

[0044] In some embodiments, as Figure 1 As shown, a partial structure of the heat exchanger 46 extends into the solution tank 43. This facilitates the heat exchanger 46 to more directly exchange heat with the coolant in the solution tank 43, thereby increasing the heat exchange efficiency between the heat exchanger 46 and the coolant in the solution tank 43, thereby achieving rapid cooling of the coolant in the solution tank 43.

[0045] In some embodiments, as Figure 1 As shown, a plurality of sprinklers 41 are provided, and the plurality of sprinklers 41 are spaced apart in the height direction.

[0046] Therefore, by arranging multiple sprinklers 41 at intervals in the height direction, multi-stage spraying can be achieved, thereby increasing the contact probability between the coal gas and the coolant, so as to better achieve the cooling of the coal gas. At the same time, the gas distributor 5 can make the coal gas more evenly dispersed to improve the cooling effect of the coal gas.

[0047] In some implementations, a pretreatment device 10 for dry decarbonization of SRV furnace gas further includes a dust removal fan 7 , which is adapted to be connected between a water wash inlet 11 and the SRV furnace gas outlet. Thus, the dust removal fan 7 facilitates dust removal from the SRV furnace gas outlet, thereby reducing the dust content in the gas.

[0048] The following is combined with Figure 1 A specific embodiment of a pretreatment device 10 for dry decarbonization of SRV furnace gas is described in the present application:

[0049] A pretreatment device 10 for dry decarbonization of SRV furnace gas includes: a water scrubber 1, a compressor 2, a dehydration component 3, a cooling component 4, a gas distributor 5, a demister 6 and a dust removal fan 7. The dehydration component 3 includes a dehydration tower 31 and an adsorption element 32. The cooling component 4 includes a sprayer 41, a lean liquid pipe 42, a solution tank 43, a water pump 44, a rich liquid pipe 45 and a heat exchanger 46.

[0050] The inlet pipe of the dust removal fan 7 is connected to the gas process unit of the upstream SRV furnace (the gas outlet in the above embodiment), and the outlet of the dust removal fan 7 is connected to the water washing inlet 11 of the water washing tower 1 through the gas pipeline. The water washing outlet 12 is connected to the dehydration tower 31. The dehydration tower 31 is filled with an adsorption component 32 dedicated to dehydration. The outlet of the dehydration tower 31 is connected to the air inlet of the compressor 2, and the air outlet of the compressor 2 is connected to the downstream decarbonization adsorption tower.

[0051] The connections among the dust removal fan 7, the gas pipeline, the water washing tower 1, the dehydration tower 31 and the compressor 2 are all welded.

[0052] The gas distributor 5, the sprayer 41 and the demister 6 are arranged inside the water scrubber 1. In the height direction, the gas distributor 5 is located below the sprayer 41, and the demister 6 is located above the sprayer 41. A lean liquid outlet is provided at the bottom of the water scrubber 1, and the lean liquid outlet is connected to the lean liquid pipe 42. The lean liquid pipe 42 is connected to the solution tank 43, the water pump 44 and the rich liquid pipe 45 in sequence. The heat exchange device is provided on the solution tank 43, and the rich liquid pipe 45 is connected to the sprayer 41 inside the water scrubber 1; there are two sprayers 41 in the height direction, and the two sprayers 41 are connected in parallel to the rich liquid pipe 45 to achieve two-stage spraying.

[0053] Furthermore, the connections among the water washing tower 1, the lean liquid pipe 42, the solution tank 43, the water pump 44, and the rich liquid pipe 45 are all welded.

[0054] During use, the coal gas discharged from the SRV furnace is drawn by the dust removal fan 7 and transported to the water scrubber 1 through the gas pipeline. The coal gas passes through the gas distributor 5, so that the coal gas is evenly distributed in the upward direction of the water scrubber 1. The coolant in the solution tank 43 is a rich liquid. The rich liquid is provided with a conveying capacity by the water pump 44 and is sent to the water scrubber 1 through the rich liquid pipe 45. Then, it passes through the sprayer 41, so that the rich liquid is evenly distributed in the downward direction of the water scrubber 1. The rising coal gas and the descending coolant complete gas-liquid contact in the water scrubber 1. The goal of dehumidifying and cooling the coal gas is achieved, and at the same time, the content of impurities such as dust in the coal gas is further reduced. The coal gas after dehumidification and cooling is initially dehydrated by the demister 6 and then enters the dehydration tower 31. It is then deeply dehydrated by the dehydration-specific adsorption component 32 in the dehydration tower 31. Finally, the compressor 2 is used to achieve the purpose of pressurization and the gas is sent to the subsequent decarbonization adsorption tower section. The cooling liquid after the gas-liquid contact is converted into a lean liquid and enters the solution tank 43 through the lean liquid pipe 42. The heat exchange required by the solution tank 43 is provided by the heat exchanger 46.

[0055] In some implementations, the diameter of the gas pipeline is selected based on its design flow rate and economic flow rate; the equipment specifications of the dust removal fan 7, the water washing tower 1, and the dehydration tower 31 are calculated based on the parameters such as the gas design flow rate and the optimal operating temperature of the SRV furnace; the filling amount of the adsorption element 32 dedicated to dehydration is determined according to the specifications of the dehydration tower 31, for example, the adsorption element 32 is an adsorbent, and the particle size of the adsorbent dedicated to dehydration is 2mm to 4mm, and the absorption rate is ≥28%; the compressor 2 is selected based on the gas design flow rate and working pressure of the SRV furnace, and the gas of the SRV furnace is pressurized from 15kPa to 0.2MPa, the gas distributor 5, the sprayer 41 and the demister 6 are fixed in the water scrubber 1 by corresponding brackets. The diameters of the lean liquid pipe 42 and the rich liquid pipe 45 are selected based on their design flow rates and economic flow rates. The design flow rates of the lean liquid and rich liquid are calculated based on the gas moisture absorption and cooling capacity of the SRV furnace. After moisture absorption and cooling, the gas of the SRV furnace is cooled from 120°C to 40°C. The equipment specifications of the solution tank 43 and the water pump 44 are calculated based on parameters such as the design flow rates of the lean liquid and rich liquid and the optimal operating temperature. The equipment specifications of the heat exchanger 46 are calculated based on the cooling capacity and the above-mentioned process.

[0056] Finally, the application of a pretreatment device 10 for dry decarbonization of SRV furnace gas can absorb moisture and cool the SRV furnace gas to 40°C, increase the pressure to 0.2MPa, and at the same time reduce the water content in the gas to achieve the optimal operating temperature of the subsequent decarbonization adsorption tower section.

[0057] This reduces the water content and temperature of the coal gas while simultaneously increasing the system pressure of the SRV furnace's coal gas, meeting the operating temperature, pressure, and water content requirements of the decarbonization adsorption tower's adsorbent. Furthermore, the reduced temperature reduces the volume of the SRV furnace's coal gas, facilitating its distribution and reducing resistance drop. The dehydration process also reduces some of the harmful gas components in the SRV furnace's coal gas, minimizing damage to the adsorbent's specialized filler, extending the adsorbent's service life, and reducing production costs.

[0058] It should be noted that some of the structural arrangements in the above embodiments are only used as an example of a preferred embodiment and do not represent a limitation thereto.

[0059] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0060] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0061] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0062] Obviously, those skilled in the art may make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if such changes and modifications fall within the scope of the claims of this specification and their equivalents, this specification is intended to include such changes and modifications.

Claims

1. A pretreatment device for dry decarbonization of SRV furnace gas, characterized in that: include: A water washing tower and a compressor, wherein the water washing tower is provided with a water washing inlet and a water washing outlet, the water washing inlet is adapted to be communicated with the gas outlet of the SRV furnace, the water washing outlet is communicated with the air inlet of the compressor, and the air outlet of the compressor is adapted to be communicated with the inlet of the decarbonization adsorption tower; A dehydration component is connected between the water washing tower and the air inlet of the compressor.

2. A pretreatment device for dry decarbonization of SRV furnace gas according to claim 1, characterized in that: The dehydration assembly includes a dehydration tower and an adsorption element. The dehydration tower is connected between the water washing tower and the air inlet of the compressor. The adsorption element is located in the dehydration tower.

3. A pretreatment device for dry decarbonization of SRV furnace gas according to claim 2, characterized in that: The adsorption element is filled in the dehydration tower.

4. A pretreatment device for dry decarbonization of SRV furnace gas according to claim 1, characterized in that: Also includes: A cooling component includes a sprayer, which is arranged in the water washing tower and is used to spray cooling liquid into the water washing tower.

5. A pretreatment device for dry decarbonization of SRV furnace gas according to claim 4, characterized in that: Also includes: A gas distributor is located in the water washing tower, and the gas inlet of the gas distributor is connected to the water washing inlet, and the gas outlet of the gas distributor is arranged opposite to the spray port of the sprayer.

6. A pretreatment device for dry decarbonization of SRV furnace gas according to claim 4, characterized in that: Also includes: A demister is provided in the water washing tower and is located between the sprayer and the water washing outlet.

7. A pretreatment device for dry decarbonization of SRV furnace gas according to claim 4, characterized in that: The cooling assembly further includes: a lean liquid pipe, a solution tank, a water pump and a rich liquid pipe, the lean liquid pipe is connected between the water washing tower and the solution tank, the rich liquid pipe is connected to the sprayer, and the water pump is connected between the rich liquid pipe and the solution tank.

8. A pretreatment device for dry decarbonization of SRV furnace gas according to claim 7, characterized in that: The cooling component further includes a heat exchanger connected to the solution tank and configured to exchange heat with the coolant in the solution tank.

9. A pretreatment device for dry decarbonization of SRV furnace gas according to claim 8, characterized in that: The local structure of the heat exchanger extends into the solution tank.

10. A pretreatment device for dry decarbonization of SRV furnace gas according to any one of claims 4 to 9, characterized in that: There are a plurality of the sprinklers, and the plurality of the sprinklers are spaced apart in the height direction.

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