Gas reaction device

Abstract

The utility model provides a gas reaction device, comprising: a reaction container, which is provided with a reaction space, a gas inlet and a gas outlet, the gas inlet and the gas outlet are communicated with the reaction space, and the gas inlet and the gas outlet are respectively arranged at two opposite ends of the reaction space; the at least one heat conduction jacket is arranged on the outer side of the reaction container and is attached to the outer wall of the reaction container, the heat conduction jacket is used for forming a heat conduction flow channel, and the heat conduction flow channel extends in the distribution direction of the air inlet and the air outlet so as to guide the internal heat transfer medium to flow in the direction from the end where the air inlet is located to the end where the air outlet is located. The heat transfer medium can absorb part of heat released by the raw material gas in the reaction space close to the gas inlet, so that inactivation caused by thermal sintering of a catalyst arranged near the gas inlet due to over-high temperature of the reaction space close to the gas inlet is avoided, and the gas reaction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas reaction technical field, especially a kind of gas reaction device. BACKGROUND

[0002] In chemical industry, the reaction between gases is used to obtain the final chemical product, which is a common product production approach. In the production process, the original material gas can be referred to as raw gas, and the obtained product can be referred to as product gas. The raw gas needed is usually input from the gas inlet into a reaction space, and the raw gas is mixed and chemically reacted during the flow from the gas inlet to the gas outlet, thereby obtaining the product gas, and then the gas with the product gas flows out from the gas outlet. SUMMARY

[0003] One object of the present utility model is to provide a gas reaction device that improves the efficiency of gas reaction.

[0004] In particular, the present utility model provides a gas reaction device, comprising:

[0005] a reaction vessel formed with a reaction space, a gas inlet and a gas outlet, the gas inlet and the gas outlet being in communication with the reaction space, and the gas inlet and the gas outlet being respectively arranged at opposite ends of the reaction space; and

[0006] at least one heat-conducting jacket arranged on the outside of the reaction vessel and abutting against the outer wall of the reaction vessel, the heat-conducting jacket being used to form a heat-conducting flow channel, the heat-conducting flow channel extending along the distribution direction of the gas inlet and the gas outlet to guide the internal heat transfer medium to flow in the direction from the end where the gas inlet is located to the end where the gas outlet is located.

[0007] Optionally, the reaction vessel comprises:

[0008] a main body portion in the shape of a cylinder;

[0009] a first end wall and a second end wall, the first end wall and the second end wall being respectively arranged at two openings of the main body portion, the main body portion, the first end wall and the second end wall collectively enclosing the reaction space, the gas inlet being arranged at the first end wall, the gas outlet being arranged at the second end wall, and the heat-conducting jacket being arranged on the outside of the main body portion.

[0010] Optionally, the gas reaction device comprises a plurality of heat-conducting jackets, and the plurality of heat-conducting jackets are distributed along the circumferential direction of the main body portion.

[0011] Optionally, a plurality of flow guide ribs are arranged in the heat-conducting flow channel, the plurality of flow guide ribs are distributed along the axial direction of the main body portion, and adjacent two flow guide ribs partially overlap in the axial direction of the main body portion.

[0012] Optionally, the heat-conducting flow channel is helical and surrounds the main body portion, and a helical direction of the heat-conducting flow channel is along an axial direction of the main body portion.

[0013] Optionally, the gas reaction device further comprises:

[0014] a condensing tube passing through the reaction space along an axial direction of the main body portion; and

[0015] a heat-insulating gas-permeable layer arranged in the reaction space and surrounding the condensing tube, the heat-insulating gas-permeable layer being configured to allow gas in the reaction space to pass through and be condensed by the condensing tube and to increase a heat exchange resistance between the condensing tube and the reaction space.

[0016] Optionally, the heat-insulating gas-permeable layer is provided with a plurality of gas-permeable holes penetrating the heat-insulating gas-permeable layer along a radial direction of the heat-insulating gas-permeable layer, and a hole diameter of the gas-permeable holes is set to be less than or equal to 10 mm.

[0017] Optionally, a porosity of the heat-insulating gas-permeable layer is set to be 20% to 70%.

[0018] Optionally, the heat-insulating gas-permeable layer is provided with a plurality of gas-permeable slits penetrating the heat-insulating gas-permeable layer along a radial direction of the heat-insulating gas-permeable layer, and a thickness of the gas-permeable slits is set to be less than or equal to 5 mm.

[0019] Optionally, the heat-conducting jacket and the side wall of the reaction vessel jointly form the heat-conducting flow channel.

[0020] The gas reaction device of the present application is provided with a heat-conducting jacket outside the reaction vessel, the heat-conducting jacket is formed with a heat-conducting flow channel for guiding the internal heat transfer medium to flow along the distribution direction of the gas inlet and the gas outlet. On the one hand, the heat transfer medium can absorb part of the heat released by the raw gas in the part of the reaction space close to the gas inlet, so as to avoid the temperature of the part of the reaction space close to the gas inlet being too high to cause the catalyst arranged near the gas inlet to be hot sintered and deactivated, thereby avoiding the adverse effect on the gas reaction efficiency. On the other hand, because the gas reaction heat transfer medium flows in the heat-conducting flow channel to the part of the reaction space close to the gas outlet, the heat can be transferred to other parts of the reaction space, the reaction efficiency of the other parts is improved, and the heat is prevented from being concentrated in the part of the reaction space close to the gas inlet, thereby improving the overall reaction efficiency of the reaction space. Therefore, in general, the present application not only helps to reduce the deactivation of the catalyst, but also helps to improve the overall efficiency of the reaction space, thereby improving the gas reaction efficiency.

[0021] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0023] Figure 1 is a schematic cross-sectional view of a gas reaction device according to one embodiment of the present invention;

[0024] Figure 2 is a schematic cross-sectional view of a heat-conducting jacket in a gas reaction device according to one embodiment of the present utility model;

[0025] Figure 3 This is a schematic cross-sectional view of a condenser and a heat-insulating and breathable layer in a gas reaction device according to one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the surface of the heat-insulating and breathable layer in the gas reaction device according to one embodiment of the present utility model after expansion;

[0027] Figure 5 This is a schematic diagram of the surface of the heat-insulating and breathable layer in the gas reaction device according to another embodiment of the present utility model after expansion;

[0028] Figure 6 Schematic diagram of a gas reaction device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0029] Those skilled in the art should understand that the embodiments described below are only a portion of the embodiments of the present invention, rather than all of the embodiments of the present invention. These embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0030] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is the orientation or positional relationship shown based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0031] Further, it needs to be further explained that, in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be directly connected, or indirectly connected through an intermediate medium, and can also be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] As shown in Figure 1 In one embodiment, the gas reaction device includes a reaction container 100 and a plurality of heat-conducting jackets 200. The reaction container 100 is formed with a reaction space 101, a gas inlet 102 and a gas outlet 103, the gas inlet 102 and the gas outlet 103 communicate with the reaction space 101, and the gas inlet 102 and the gas outlet 103 are respectively arranged at opposite ends of the reaction space 101. The heat-conducting jacket 200 is arranged outside the reaction container 100 and abuts against the outer wall of the reaction container 100. The heat-conducting jacket 200 is used to form a heat-conducting flow channel 201, and the heat-conducting flow channel 201 extends along the distribution direction of the gas inlet 102 and the gas outlet 103 to guide the internal heat transfer medium to flow in the direction from the end where the gas inlet 102 is located to the end where the gas outlet 103 is located.

[0033] As shown in Figure 1 Specifically, the reaction container 100 includes a main body part 110, a first end wall 120 and a second end wall 130. The main body part 110 is in a cylindrical shape. The first end wall 120 and the second end wall 130 are respectively arranged at two openings of the main body part 110, and the main body part 110, the first end wall 120 and the second end wall 130 jointly enclose the reaction space 101. The gas inlet 102 is arranged at the first end wall 120, the gas outlet 103 is arranged at the second end wall 130, and the heat-conducting jacket 200 is arranged outside the main body part 110.

[0034] Referring to Figure 1As shown in the middle plane, the main body 110 is cylindrical, the axis of the main body 110 extends longitudinally, and the top and bottom of the main body 110 are two openings of the cylinder. The first end wall 120 is arranged at the top opening of the main body 110 and seals the top opening of the main body 110, and the second end wall 130 is arranged at the bottom opening of the main body 110 and seals the bottom opening of the main body 110, so that the main body 110, the first end wall 120 and the second end wall 130 together enclose a cylindrical reaction space 101. The gas inlet 102 is arranged on the first end wall 120 and communicates with the reaction space 101, and the gas outlet 103 is arranged on the second end wall 130 and communicates with the reaction space 101.

[0035] It should be noted that in other embodiments, the main body can also be a square cylinder or other polygonal cylinder. In addition, the gas inlet can also be arranged near the first end wall of the main body, or the gas outlet can also be arranged near the second end wall of the main body, that is, the opposite ends of the reaction space refer to the two end portions of the reaction space, so that the gas flow can flow through most of the reaction space from the gas inlet to the gas outlet, and is not specific to the surface of the reaction device.

[0036] Referring to Figure 1 As shown in the middle plane, the main body 110 is cylindrical, the axis of the main body 110 extends longitudinally, and the top and bottom of the main body 110 are two openings of the cylinder. The first end wall 120 is arranged at the top opening of the main body 110 and seals the top opening of the main body 110, and the second end wall 130 is arranged at the bottom opening of the main body 110 and seals the bottom opening of the main body 110, so that the main body 110, the first end wall 120 and the second end wall 130 together enclose a cylindrical reaction space 101. The gas inlet 102 is arranged on the first end wall 120 and communicates with the reaction space 101, and the gas outlet 103 is arranged on the second end wall 130 and communicates with the reaction space 101.

[0037] Because the condition of gas reaction is usually to pass high-temperature raw material gas into the reaction space, and when the raw material gas is transported to the reaction space by a relatively narrow pipeline, the volume expands rapidly and a large amount of heat is released, so the temperature near the inlet of the reaction space is too high, which can easily cause the catalyst at the above position to be hot sintered and deactivated.

[0038] In the scheme of the embodiment, by arranging the heat-conducting jacket 200 outside the reaction container 100, the heat-conducting jacket 200 is formed with the heat-conducting flow channel 201 for guiding the heat-conducting medium inside to flow along the distribution direction of the gas inlet 102 and the gas outlet 103. On the one hand, the heat-conducting medium can absorb part of the heat released by the raw gas at the part of the reaction space 101 close to the gas inlet 102, so as to avoid the temperature at the part of the reaction space 101 close to the gas inlet 102 being too high to cause the catalyst arranged near the gas inlet 102 to be sintered and deactivated, thereby avoiding the adverse effect on the gas reaction efficiency. On the other hand, because the heat-conducting medium of the gas reaction flows in the heat-conducting flow channel 201 to the part of the reaction space 101 close to the gas outlet 103, the heat can be transferred to other parts of the reaction space 101, so as to improve the reaction efficiency of the other parts and avoid the heat being concentrated at the part of the reaction space 101 close to the gas inlet 102, thereby improving the overall reaction efficiency of the reaction space 101. Therefore, in general, the scheme not only helps to reduce the deactivation of the catalyst, but also helps to improve the overall efficiency of the reaction space 101, thereby improving the gas reaction efficiency.

[0039] As shown in Figure 1 and Figure 2 , in one embodiment, the heat-conducting flow channel 201 is provided with a plurality of flow guide ribs 210, the plurality of flow guide ribs 210 are distributed along the axial direction of the main body part 110, and adjacent two flow guide ribs 210 partially overlap in the axial direction of the main body part 110.

[0040] As shown in Figure 2 , in the process of the heat-conducting medium flowing in the heat-conducting flow channel 201 in the longitudinal direction, the heat-conducting medium will be blocked by the flow guide ribs 210 and flow in the transverse direction. However, the adjacent two flow guide ribs 210 partially overlap in the axial direction of the main body part 110, so that the heat-conducting medium flowing down from the upper flow guide rib 210 will fall on the part of the adjacent lower flow guide rib 210 which does not overlap with the upper flow guide rib 210, so as to form a reciprocating and tortuous flow path of the heat-conducting medium in the heat-conducting flow channel 201, which is beneficial to improve the heat transfer efficiency of the heat-conducting medium.

[0041] In the scheme of the embodiment, by arranging the plurality of flow guide ribs 210 in the heat-conducting flow channel 201, the flow guide ribs 210 can block the heat-conducting medium during the flow of the heat-conducting medium, so as to change the flow direction of the flow guide ribs 210, prolong the heat exchange time of the heat-conducting medium with the reaction container 100, and further help to improve the heat transfer efficiency of the heat-conducting medium.

[0042] As shown in Figure 1 and Figure 3As shown, the gas reaction device further comprises a condensing pipe 300 and a heat-insulating gas-permeable layer 400. The condensing pipe 300 passes through the reaction space 101 along the axial direction of the main body 110. The heat-insulating gas-permeable layer 400 is arranged in the reaction space 101 and surrounds the condensing pipe 300, and is configured to allow the gas in the reaction space 101 to pass through and be condensed by the condensing pipe 300, and to increase the heat exchange resistance between the condensing pipe 300 and the reaction space 101.

[0043] Referring to Figure 1 and Figure 3 As shown, specifically, the condensing pipe 300 passes through the first end wall 120 and the second end wall 130 along the longitudinal direction, thereby passing through the reaction space 101. The condensing pipe 300 can be supplied with a coolant, such as low-temperature water. The heat-insulating gas-permeable layer 400 surrounds the outer periphery of the condensing pipe 300. The heat-insulating gas-permeable layer 400 is made of a heat-insulating material and is formed with apertures allowing gas to pass through. Exemplarily, the heat-insulating gas-permeable layer 400 can be made of a heat-insulating gas-permeable material with a thermal conductivity coefficient not greater than 50 W / (m·K), such as 50 W / (m·K), 40 W / (m·K), 30 W / (m·K), 20 W / (m·K), 10 W / (m·K), 5 W / (m·K), 1 W / (m·K), etc.

[0044] Referring to Figure 1 , Figure 3 and Figure 4 As shown, specifically, the heat-insulating gas-permeable layer 400 is provided with gas-permeable holes 401, which pass through the heat-insulating gas-permeable layer 400 along the radial direction of the heat-insulating gas-permeable layer 400, and the hole diameter of the gas-permeable holes 401 is set to be not greater than 10 mm, such as 10 mm, 9 mm, 7 mm, 5 mm, 3 mm, 1 mm, etc. The gas on the side of the heat-insulating gas-permeable layer 400 away from the condensing pipe 300 can flow to the side of the heat-insulating gas-permeable layer 400 facing the condensing pipe 300 through the gas-permeable holes 401, thereby contacting the condensing pipe 300 and being condensed into liquid state under the low-temperature action of the condensing pipe 300. The condensed liquid substance can slide down along the pipe wall of the condensing pipe 300 and be collected and discharged out of the reaction container 100.

[0045] In the scheme of the present embodiment, by setting a condensing pipe 300 through the reaction space 101 in the reaction container 100, and setting a heat-insulating gas-permeable layer 400 around the condensing pipe 300, so that the gas on the side of the heat-insulating gas-permeable layer 400 away from the condensing pipe 300 can flow through the gas-permeable holes 401 to the side of the heat-insulating gas-permeable layer 400 facing the condensing pipe 300, thereby contacting the condensing pipe 300 and condensing into liquid state under the low temperature of the condensing pipe 300, that is, the product gas in the reaction space 101 can be condensed into liquid product, thereby reducing the product gas concentration in the reaction space 101, according to Le Chatelier's principle, the reaction will be promoted in the direction of increasing the product gas concentration, thereby improving the conversion rate of the raw material gas. Moreover, the heat-insulating gas-permeable layer 400 can reduce the influence of the cold of the condensing pipe 300 on the temperature of the reaction space 101, and because the heat-conducting jacket 200 is set, heat can be supplemented to all parts of the reaction space 101, which can further reduce the influence of the cold of the condensing pipe 300 on the overall temperature of the reaction space 101, so that the temperature in the reaction space 101 can be maintained in a reasonable range.

[0046] Exemplarily, taking the process flow of synthesizing methanol as an example, generally, a mixture gas of carbon dioxide and hydrogen, or a mixture gas of carbon dioxide, carbon monoxide and hydrogen is introduced into the reaction space, and the final gas reaction generates gaseous methanol and gaseous water, and the gaseous methanol and gaseous water pass through the heat-insulating gas-permeable layer through the pores of the heat-insulating gas-permeable layer to contact the condensing pipe, and are condensed into liquid methanol and liquid water, thereby promoting the gas reaction to continue in the direction of increasing the concentration of gaseous methanol and gaseous water, and improving the conversion rate of the raw material gas.

[0047] Referring to Figure 1 , Figure 3 and Figure 4 , the porosity of the heat-insulating gas-permeable layer 400 is set to 20% to 70%. For example, it can be 20%, 30%, 40%, 50%, 60% or 70% and the like. The porosity is the percentage of the sum of the volumes of the areas surrounded by the plurality of gas-permeable holes 401 on the heat-insulating gas-permeable layer 400 to the volume of the solid part of the heat-insulating gas-permeable layer 400. If the porosity is too large, it will affect the mechanical strength and heat-insulating effect of the heat-insulating gas-permeable layer, and if the porosity is too small, the condensation efficiency of the product gas will also be too low, therefore, when the porosity is set to 20% to 70%, the heat-insulating gas-permeable layer 400 can take into account the gas permeability, mechanical strength and heat preservation.

[0048] Referring to Figure 1 and Figure 5As shown in the drawings, in one embodiment, the heat insulation and ventilation layer 400 is provided with a ventilation gap 402, which penetrates the heat insulation and ventilation layer 400 along the radial direction of the heat insulation and ventilation layer 400, and the thickness of the ventilation gap 402 is set to be less than or equal to 5 mm, for example, which can be 5 mm, 4 mm, 3 mm, 2 mm, 1 mm. By providing the ventilation gap 402 on the heat insulation and ventilation layer 400, the effect of the heat insulation and ventilation layer 400 can also be achieved.

[0049] As shown in the drawings, Figure 6 In one embodiment, the heat conduction flow channel is spiral and surrounds the main body part, and the spiral direction of the heat conduction flow channel is along the axial direction of the main body part. Specifically, the heat conduction jacket 200 is spiral and surrounds the main body part of the reaction container 100, thereby forming a spiral heat conduction flow channel.

[0050] It should be noted that in other embodiments, the heat conduction jacket can also be cylindrical and surround the main body part, and the spiral heat conduction flow channel can be formed inside the heat conduction jacket by providing a partition rib.

[0051] With reference to the scheme, Figure 1 In one embodiment, the heat conduction jacket 200 and the side wall of the reaction container 100 jointly form the heat conduction flow channel 201, that is, the side wall of the reaction container 100 constitutes the side wall of the heat conduction flow channel 201, so that the heat transfer medium in the heat conduction flow channel 201 only exchanges heat with the inside of the reaction space 101 through the side wall of the reaction container 100, thereby improving the heat transfer efficiency.

[0052] At this point, those skilled in the art should recognize that although the present application has been shown and described in detail in the above embodiments, many other variants or modifications in accordance with the principles of the present application can be directly determined or deduced from the content disclosed in the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application should be understood and recognized as covering all these other variants or modifications.

Claims

1. A gas reaction apparatus characterized by comprising: The gas reaction device comprises: a reaction container, which is formed with a reaction space, a gas inlet and a gas outlet, the gas inlet and the gas outlet are communicated with the reaction space, and the gas inlet and the gas outlet are respectively arranged at opposite ends of the reaction space; and at least one heat-conducting jacket, which is arranged outside the reaction container and abuts against the outer wall of the reaction container, the heat-conducting jacket is used to form a heat-conducting flow channel, the heat-conducting flow channel extends along the distribution direction of the gas inlet and the gas outlet, so as to guide the internal heat-conducting medium to flow in the direction from the end where the gas inlet is located to the end where the gas outlet is located.

2. The gas reaction device according to claim 1, wherein the reaction container comprises: a main body portion in a cylindrical shape; a first end wall and a second end wall, which are respectively arranged at two openings of the main body portion, the main body portion, the first end wall and the second end wall jointly enclose the reaction space, the gas inlet is arranged at the first end wall, the gas outlet is arranged at the second end wall, and the heat-conducting jacket is arranged outside the main body portion.

3. The gas reaction device according to claim 2, wherein the gas reaction device comprises a plurality of heat-conducting jackets, and the plurality of heat-conducting jackets are distributed along the circumferential direction of the main body portion.

4. The gas reaction device according to claim 2, wherein a plurality of flow guides are arranged in the heat-conducting flow channel, the plurality of flow guides are distributed along the axial direction of the main body portion, and adjacent two flow guides partially overlap in the axial direction of the main body portion.

5. The gas reaction device according to claim 2, wherein the heat-conducting flow channel is in a spiral shape and surrounds the main body portion, and the spiral direction of the heat-conducting flow channel is along the axial direction of the main body portion.

6. The gas reaction device according to claim 2, further comprising: a condenser tube, which passes through the reaction space along the axial direction of the main body portion; and a heat-insulating gas-permeable layer, which is arranged in the reaction space and surrounds the outside of the condenser tube, the heat-insulating gas-permeable layer is configured to allow the gas in the reaction space to pass through and be condensed by the condenser tube, and to increase the heat exchange resistance between the condenser tube and the reaction space.

7. The gas reaction device according to claim 6, wherein the heat-insulating gas-permeable layer is provided with a plurality of gas-permeable holes, the gas-permeable holes penetrate through the heat-insulating gas-permeable layer along the radial direction of the heat-insulating gas-permeable layer, and the hole diameter of the gas-permeable holes is set to be less than or equal to 10 mm.

8. The gas reaction device according to claim 7, wherein the porosity of the heat-insulating gas-permeable layer is set to be 20% to 70%.

9. The gas reaction device according to claim 6, wherein the heat-insulating gas-permeable layer is provided with a plurality of gas-permeable slits, the gas-permeable slits penetrate through the heat-insulating gas-permeable layer along the radial direction of the heat-insulating gas-permeable layer, and the thickness of the gas-permeable slits is set to be less than or equal to 5 mm.

10. The gas reaction device according to claim 1, wherein the heat-conducting jacket and the side wall of the reaction container jointly form the heat-conducting flow channel. ​ ​

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