Byproduct gas treatment device suitable for heavy industry production

Abstract

The utility model discloses a byproduct gas treatment device suitable for heavy industry production, and relates to the technical field of waste gas treatment. According to the main technical scheme, a waste gas waste heat absorption unit comprises a waste gas pipe and a condensing medium pipe, and one end of the waste gas pipe communicates with the end, away from a waste gas treatment tower, of a waste gas dust filtering unit; the condensing medium pipe is arranged in the waste gas pipe and comprises spiral pipe bodies, the spiral pipe bodies extend from one end of the waste gas pipe to the other end of the waste gas pipe, at least two spiral pipe bodies are sequentially arranged in a sleeving mode from the outer wall of the waste gas pipe to the inner wall of the waste gas pipe, and a first waste gas flow channel is arranged between every two adjacent spiral pipe bodies; and the condensing medium conveying directions of the spiral pipe bodies are the same. After the low-temperature condensing medium is introduced into each spiral pipe body, the condensing medium in each spiral pipe body gradually rises in the direction from one end of the waste gas pipe to the other end of the waste gas pipe, so that the purpose of ensuring that the condensing medium in each spiral pipe body has a relatively high heat absorption effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a by-product gas treatment device suitable for heavy industrial production. Background Art

[0002] Heavy industry includes industries such as iron and steel industry, metallurgical industry, machinery, energy (electric power, petroleum, coal, natural gas, etc.), chemistry, materials, etc. By-product gas generated in heavy industrial production, when the by-product gas is exported, part of the heat will be carried away and discharged together, resulting in waste of energy resources.

[0003] The existing patent document discloses a waste heat recovery and reuse system for high-carbon chromite electric furnace, which relates to the technical field of high-carbon ferrochrome smelting. The waste heat absorption unit of the waste gas includes a base fixedly installed above the installation substrate. Above the base, a first-section connection cylinder, a second-section connection cylinder, a cap, and a connection pipe are sequentially connected in series from bottom to top. A spiral heat exchange tube is commonly arranged inside the cap, the second-section connection cylinder, and the first-section connection cylinder. After the heat carried by the waste gas comes into contact with the heat exchange tube, under the action of heat conduction, the heat in the waste gas will be absorbed by the gas or liquid with a relatively lower temperature in the heat exchange tube, thereby realizing the transfer of heat, so that the transferred gas or liquid can be better utilized in other production processes. In addition, after the waste gas carrying heat is cooled, for the subsequent treatment equipment, the aging and loss of the treatment equipment itself are reduced, and the service life is prolonged.

[0004] Among them, the spiral heat exchange tube has an inner and outer double-layer structure as shown in Figure 6 During the process of the heat exchange substance flowing from the inlet end of the heat exchange tube to the outlet end of the heat exchange tube, the temperature of the heat exchange substance gradually increases, so that the temperature of the heat exchange substance in the inner layer part or the outer layer part of the heat exchange tube is relatively high, so that when the waste gas flows through the heat exchange tube, the heat absorption effect of the heat exchange substance in the inner layer part or the outer layer part of the heat exchange tube on the heat in the waste gas is relatively low. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a by-product gas treatment device suitable for heavy industrial production. Its condensing medium tube is formed by sequentially sleeving a plurality of spiral tube bodies from the outer wall of the waste gas pipe to the inner wall of the waste gas pipe, and the conveying directions of the condensing medium in each spiral tube body are the same. It solves the problem that in the prior art, during the use of the heat exchange tube, the temperature of the heat exchange substance in the inner layer part or the outer layer part of the heat exchange tube is relatively high, so that the heat absorption effect of the heat exchange substance in the inner layer part or the outer layer part of the waste heat exchange tube on the waste gas is relatively low.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A by-product gas treatment device applicable to heavy industry production, comprising an equipment bearing base, an installation substrate is arranged on the equipment bearing base, an exhaust gas dust filtering unit, an exhaust gas treatment tower and an exhaust gas temporary storage tank are installed on the installation substrate, the exhaust gas dust filtering unit, the exhaust gas treatment tower and the exhaust gas temporary storage tank are sequentially communicated along the flow path of the exhaust gas, and an exhaust gas waste heat absorption unit is further included. The exhaust gas waste heat absorption unit includes an exhaust gas pipe and a condensing medium pipe; the exhaust gas pipe is arranged on the installation substrate, one end of the exhaust gas pipe is communicated with one end of the exhaust gas dust filtering unit away from the exhaust gas treatment tower, and the other end of the exhaust gas pipe is used for accessing exhaust gas; the condensing medium pipe is arranged in the exhaust gas pipe, the condensing medium pipe includes a spiral pipe body, the spiral pipe body extends along the direction from one end of the exhaust gas pipe to the other end of the exhaust gas pipe, at least two spiral pipe bodies are sequentially sleeved along the outer wall of the exhaust gas pipe to the inner wall of the exhaust gas pipe, and a first exhaust gas flow channel is arranged between adjacent two spiral pipe bodies; wherein, the conveying directions of the condensing medium in each spiral pipe body are the same.

[0008] A further scheme is that: a second exhaust gas flow channel is arranged between the outer wall of the condensing medium pipe and the inner wall of the exhaust gas pipe.

[0009] A further scheme is that: the number of the condensing medium pipes is set to be several, and the several condensing medium pipes are uniformly arranged around the axis of the exhaust gas pipe.

[0010] A further scheme is that: the by-product gas treatment device further includes a connecting plate; the number of the connecting plates is set to be two, and the two connecting plates are respectively connected to two ends of the exhaust gas pipe; wherein, two ends of the condensing medium pipe respectively penetrate through the two connecting plates.

[0011] A further scheme is that: an exhaust gas discharge port is opened on the connecting plate close to the exhaust gas dust filtering unit.

[0012] A further scheme is that: an exhaust gas feed port is opened on the connecting plate far from the exhaust gas dust filtering unit.

[0013] A further scheme is that: the axis of the exhaust gas feed port is the same as the axis of the exhaust gas pipe.

[0014] A further scheme is that: the by-product gas treatment device further includes a heat insulation layer; the heat insulation layer is arranged on the inner wall of the exhaust gas pipe.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. When the exhaust gas flows from one end of the exhaust gas pipe to the other end, the condensing medium in the condensing medium pipe recovers the heat in the exhaust gas. The purpose of realizing heat transfer is achieved.

[0017] 2. One end of the exhaust gas pipe close to the exhaust gas dust filtering unit is communicated with the exhaust gas dust filtering unit. Before the exhaust gas enters the exhaust gas dust filtering unit, the exhaust gas is cooled through a condensation medium pipe, so as to help reduce the aging and wear of the exhaust gas dust filtering unit, the exhaust gas treatment tower and the exhaust gas storage tank, and extend the service life of the exhaust gas dust filtering unit, the exhaust gas treatment tower and the exhaust gas storage tank.

[0018] 3. The condensation medium pipe is composed of a plurality of spiral pipe bodies, and the plurality of spiral pipe bodies are sequentially sleeved along the outer wall of the exhaust gas pipe towards the inner wall of the exhaust gas pipe. The purpose of effectively increasing the heat exchange area between the condensation medium and the exhaust gas and then improving the heat energy recovery efficiency is achieved.

[0019] 4. The conveying directions of the condensation medium in each spiral pipe body are the same. After low-temperature condensation medium is respectively introduced into each spiral pipe body, the condensation medium in each spiral pipe body gradually rises from one end of the exhaust gas pipe to the other end of the exhaust gas pipe, so as to ensure that the condensation medium in each spiral pipe body has a high heat absorption effect. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a by-product gas treatment device applicable to heavy industrial production in this embodiment;

[0021] Figure 2 It is a schematic structural diagram of an exhaust gas waste heat absorption unit of a by-product gas treatment device applicable to heavy industrial production in this embodiment;

[0022] Figure 3 It is a front view structural diagram of an exhaust gas waste heat absorption unit of a by-product gas treatment device applicable to heavy industrial production in this embodiment;

[0023] Figure 4 It is Figure 3 the sectional view structural diagram at A-A in

[0024] Figure 5 It is Figure 3 the sectional view structural diagram at B-B in

[0025] Figure 6 It is a schematic structural diagram of an existing heat exchange pipe.

[0026] Marks in the drawings and corresponding component names:

[0027] 1 - Bearing base; 2 - Installation substrate; 3 - Exhaust gas dust filtering unit; 4 - Exhaust gas treatment tower; 5 - Exhaust gas storage tank;

[0028] 6 - Exhaust gas waste heat absorption unit; 61 - Exhaust gas pipe; 62 - Condensation medium pipe; 621 - Spiral pipe body;

[0029] 7 - First waste gas flow channel; 8 - Second waste gas flow channel; 9 - Connection plate; 10 - Waste gas discharge port; 11 - Waste gas feed port; 12 - Heat insulation layer; 13 - Third waste gas flow channel. Detailed implementation manner

[0030] The present utility model will be further described below with reference to the accompanying drawings.

[0031] Embodiment 1

[0032] The existing patent with application number 201921335424.8 discloses a high - carbon ferrochrome electric furnace waste gas recovery and reuse system, which relates to the technical field of high - carbon ferrochrome smelting. The waste gas waste heat absorption unit 6 includes a base fixedly installed above the installation substrate 2. Above the base, a first - section connection cylinder, a second - section connection cylinder, a cap, and a connection pipe are connected in series from bottom to top. A spiral heat exchange tube is commonly arranged inside the cap, the second - section connection cylinder, and the first - section connection cylinder. When the heat carried by the waste gas comes into contact with the heat exchange tube, under the action of heat conduction, the heat in the waste gas will be absorbed by the gas or liquid with a relatively lower temperature in the heat exchange tube, thereby realizing the transfer of heat, so that the transferred gas or liquid can be better utilized in other production processes. In addition, after the waste gas carrying heat is cooled, for the subsequent treatment equipment, the aging and loss of the treatment equipment itself are reduced, and the service life is extended.

[0033] Among them, the spiral heat exchange tube has an inner - outer double - layer structure as shown in Figure 6 During the process of the heat - exchange substance flowing from the inlet end of the heat exchange tube to the outlet end of the heat exchange tube, the temperature of the heat - exchange substance gradually increases, making the temperature of the heat - exchange substance in the inner layer or the outer layer of the heat exchange tube relatively high. As a result, when the waste gas flows through the heat exchange tube, the heat - absorption effect of the heat - exchange substance in the inner layer or the outer layer of the heat exchange tube on the heat in the waste gas is relatively low. For example, when the upper end of the inner layer of the heat exchange tube is the discharge end of the heat - exchange substance, the heat - exchange substance in the inner layer of the heat exchange tube has been heated up and has a relatively high temperature, which easily leads to a reduction in the heat - absorption effect of the waste gas flowing near the inner layer of the heat exchange tube, especially the waste gas flowing along the inner wall of the inner layer of the heat exchange tube. Similarly, when the upper end of the outer layer of the heat exchange tube is the discharge end of the heat - exchange substance, the heat - exchange substance in the outer layer of the heat exchange tube has been heated up and has a relatively high temperature, which easily leads to a reduction in the heat - absorption effect of the waste gas flowing near the outer layer of the heat exchange tube, especially the waste gas flowing along the outer wall of the outer layer of the heat exchange tube.

[0034] Therefore, this embodiment provides a by - product gas treatment device applicable to heavy - industry production, such as Figures 1-5As shown in the figure, it includes an equipment bearing base 1, an installation substrate 2 is arranged on the equipment bearing base 1, an exhaust gas dust filtering unit 3, an exhaust gas treatment tower 4 and an exhaust gas temporary storage tank 5 are installed on the installation substrate 2, the exhaust gas dust filtering unit 3, the exhaust gas treatment tower 4 and the exhaust gas temporary storage tank 5 are sequentially connected along the flow path of the exhaust gas, and it further includes an exhaust gas waste heat absorption unit 6, the exhaust gas waste heat absorption unit 6 includes an exhaust gas pipe 61 and a condensation medium pipe 62; the exhaust gas pipe 61 is arranged on the installation substrate 2, one end of the exhaust gas pipe 61 is connected to the end of the exhaust gas dust filtering unit 3 far away from the exhaust gas treatment tower 4, and the other end of the exhaust gas pipe 61 is used for accessing exhaust gas; the condensation medium pipe 62 is arranged in the exhaust gas pipe 61, the condensation medium pipe 62 includes a spiral pipe body 621, the spiral pipe body 621 extends along the direction from one end of the exhaust gas pipe 61 to the other end of the exhaust gas pipe 61, at least two of the spiral pipe bodies 621 are sequentially sleeved along the outer wall of the exhaust gas pipe 61 to the inner wall of the exhaust gas pipe 61, and a first exhaust gas flow channel 7 is arranged between adjacent two of the spiral pipe bodies 621; wherein, the conveying directions of the condensation medium in each of the spiral pipe bodies 621 are the same.

[0035] Exemplarily, in the implementation process, the installation positions and connection relationships of the equipment bearing base 1, the installation substrate 2, the exhaust gas dust filtering unit 3, the exhaust gas treatment tower 4 and the exhaust gas temporary storage tank 5 all refer to the existing patent with the application number 201921335424.8, so no further elaboration will be made here.

[0036] The exhaust gas waste heat absorption unit 6 is arranged at the end of the exhaust gas dust filtering unit 3 far away from the exhaust gas treatment tower 4, and the exhaust gas waste heat absorption unit 6 includes an exhaust gas pipe 61 and a condensation medium pipe 62. Among them, the exhaust gas pipe 61 is connected to the installation substrate 2 by means of welding, screwing and fixing, etc., and one end of the exhaust gas pipe 61 close to the exhaust gas dust filtering unit 3 is connected to the exhaust gas dust filtering unit 3 through a connecting pipe, and the other end of the exhaust gas pipe 61 far away from the exhaust gas dust filtering unit 3 is used for accessing exhaust gas.

[0037] The condensation medium pipe 62 is connected in the exhaust gas pipe 61 by means of welding, screwing and fixing, etc. The condensation medium pipe 62 is composed of a plurality of spiral pipe bodies 621, the spiral pipe bodies 621 extend along the direction from one end of the exhaust gas pipe 61 to the other end of the exhaust gas pipe 61, and the plurality of spiral pipe bodies 621 are sequentially sleeved along the outer wall of the exhaust gas pipe 61 to the inner wall of the exhaust gas pipe 61. And a first exhaust gas flow channel 7 is formed between adjacent spiral pipe bodies 621, allowing the exhaust gas to flow through and exchange heat with the condensation medium. At the same time, a third exhaust gas flow channel 13 is also formed on the inner wall of the spiral pipe body 621 located in the innermost of the condensation medium pipe 62. Among them, the conveying directions of the condensation medium (such as a gas or liquid with a temperature lower than the exhaust gas temperature) in each of the spiral pipe bodies 621 are the same. That is to say, each of the spiral pipe bodies 621 conveys the condensation medium along the direction from one end of the exhaust gas pipe 61 to the other end of the exhaust gas pipe 61.

[0038] During use, exhaust gas is introduced into the exhaust pipe 61 from one end of the exhaust pipe 61 away from the exhaust gas and dust filtering unit 3. At the same time, a condensing medium is introduced into the spiral pipe body 621 from one end of the spiral pipe body 621. After the exhaust gas enters the exhaust pipe 61, the exhaust gas is separated into several portions by the spiral pipe body 621. Among them, one portion of the exhaust gas flows along the third exhaust gas flow channel 13 from one end of the exhaust pipe 61 to the other end of the exhaust pipe 61, and the remaining exhaust gas flows along the corresponding first waste gas flow channel from one end of the exhaust pipe 61 to the other end of the exhaust pipe 61. When the exhaust gas flows from one end of the exhaust pipe 61 to the other end of the exhaust pipe 61, the condensing medium in each spiral pipe body 621 recovers the heat in the exhaust gas flowing near the spiral pipe body 621. On the one hand, the purpose of realizing heat transfer is achieved. On the other hand, the exhaust gas is cooled by the exhaust gas waste heat absorption unit 6 before entering the exhaust gas and dust filtering unit 3, so as to help reduce the aging and wear of the exhaust gas and dust filtering unit 3, the exhaust gas treatment tower 4 and the exhaust gas temporary storage tank 5, and extend the service life of the exhaust gas and dust filtering unit 3, the exhaust gas treatment tower 4 and the exhaust gas temporary storage tank 5. On the other hand, the multiple spiral pipe bodies 621 effectively increase the heat exchange area between the condensing medium and the exhaust gas, so as to achieve the purpose of improving the heat energy recovery efficiency. During the process of the condensing medium in each spiral pipe body 621 recovering the heat in the exhaust gas, low-temperature condensing medium is respectively introduced into each spiral pipe body 621, and the condensing medium in each spiral pipe body 621 gradually increases from one end of the exhaust pipe 61 to the other end of the exhaust pipe 61, so as to ensure that the condensing medium in each spiral pipe body 621 has a high heat absorption effect.

[0039] Embodiment 2

[0040] As Figure 4 shown, on the basis of the above Embodiment 1, in this embodiment, a second exhaust gas flow channel 8 is provided between the outer wall of the condensing medium pipe 62 and the inner wall of the exhaust pipe 61.

[0041] Exemplarily, during implementation, a certain gap is left between the outer wall of the condensing medium pipe 62 and the inner wall of the exhaust pipe 61, and this gap is the second exhaust gas flow channel 8. That is, a second exhaust gas flow channel 8 is provided between the outer wall of the outermost spiral pipe body 621 in the condensing medium pipe 62 and the inner wall of the exhaust pipe 61.

[0042] During use, the waste gas is separated into several portions by the spiral pipe body 621. Among them, one portion of the waste gas flows along the waste gas pipe 61 from one end to the other end through the third waste gas flow channel 13, one portion of the waste gas flows along the waste gas pipe 61 from one end to the other end through the second waste gas flow channel 8, and the remaining waste gas flows along the waste gas pipe 61 from one end to the other end through the corresponding first waste gas flow channel. It is achieved that the second waste gas flow channel 8 provides an additional waste gas flow path, so as to further increase the contact area between the waste gas and the condensation medium, thereby achieving the purpose of improving the heat exchange efficiency of the by-product gas treatment device.

[0043] Embodiment 3

[0044] As Figure 2 shown, on the basis of the above-mentioned Embodiment 1, in this embodiment, the number of the condensation medium pipes 62 is set to be several, and the several condensation medium pipes 62 are uniformly arranged around the axis of the waste gas pipe 61.

[0045] Exemplarily, during the implementation process, the number of the condensation medium pipes 62 is set to be several, and the several condensation medium pipes 62 are uniformly arranged around the axis of the waste gas pipe 61.

[0046] During use, a condensation medium is introduced into each of the condensation medium pipes 62, and at the same time, the heat carried by the waste gas in the waste gas pipe 61 is absorbed. Thus, by arranging multiple condensation medium pipes 62, the contact area between the waste gas and the condensation medium is increased, and further the purpose of improving the heat exchange efficiency is achieved. At the same time, when one or more of the condensation medium pipes 62 have problems, the other condensation medium pipes 62 can still continue to work, thereby achieving the purpose of improving the stability and reliability of the system.

[0047] Embodiment 4

[0048] As Figure 5 shown, on the basis of the above-mentioned Embodiment 1, in this embodiment, the by-product gas treatment device further includes a connecting plate 9; the number of the connecting plates 9 is set to be two, and the two connecting plates 9 are respectively connected to both ends of the waste gas pipe 61; wherein, both ends of the condensation medium pipe 62 respectively pass through the two connecting plates 9.

[0049] Exemplarily, during implementation, the by-product gas treatment device further includes a connecting plate 9, and the connecting plate 9 is connected to the waste gas pipe 61 by means of welding fixation, screw connection, etc. The number of the connecting plates 9 is set to two, and the two connecting plates 9 are respectively connected to both ends of the waste gas pipe 61. Both ends of the condensation medium pipe 62 are respectively passed through the two connecting plates 9, so as to ensure the stability and positioning accuracy of the condensation medium pipe 62 in the waste gas pipe 61. At the same time, the condensation medium pipe 62 and the connecting plate 9 are hermetically connected by means of a sealing gasket, welding, etc., so as to reduce the risk of waste gas leakage from the gap between the condensation medium pipe 62 and the connecting plate 9.

[0050] Example 5

[0051] As Figure 5 shown, on the basis of the above Example 4, in this example, an exhaust gas discharge port 10 is provided on the connecting plate 9 close to the exhaust gas dust filtering unit 3.

[0052] Exemplarily, during implementation, an exhaust gas discharge port 10 is provided on the connecting plate 9 close to the exhaust gas dust filtering unit 3, and the exhaust gas discharge port 10 on the connecting plate 9 is communicated with the exhaust gas dust filtering unit 3 through a connecting pipe. The purpose is to facilitate the cooled exhaust gas to flow into the exhaust gas dust filtering unit 3 from the exhaust gas discharge port 10 on the connecting plate 9 close to the exhaust gas dust filtering unit 3 and from inside the waste gas pipe 61.

[0053] Example 6

[0054] As Figure 5 shown, on the basis of the above Example 4 or Example 5, in this example, an exhaust gas inlet 11 is provided on the connecting plate 9 far from the exhaust gas dust filtering unit 3.

[0055] Exemplarily, during implementation, an exhaust gas inlet 11 is provided on the connecting plate 9 far from the exhaust gas dust filtering unit 3, and the exhaust gas inlet 11 on the connecting plate 9 is connected to the exhaust gas outlet of an exhaust gas generating device (such as an industrial furnace, a combustion chamber, etc.) through a connecting pipe. The purpose is to facilitate the exhaust gas to enter the waste gas pipe 61 through the exhaust gas inlet 11.

[0056] Example 7

[0057] As Figure 4 shown, on the basis of the above Example 6, in this example, the axis of the exhaust gas inlet 11 is the same as the axis of the waste gas pipe 61.

[0058] Exemplarily, during implementation, the central axis of the exhaust gas inlet 11 and the central axis of the waste gas pipe 61 are accurately aligned. That is to say, the above-mentioned several condensation medium pipes 62 are also uniformly arranged around the axis of the exhaust gas inlet 11, so that the distance between each condensation medium pipe 62 and the exhaust gas inlet 11 is equal.

[0059] During use, after the waste gas enters the waste gas pipe 61 from the waste gas inlet 11, since the distance between each condensation medium pipe 62 and the waste gas inlet 11 is equal, the waste gas can flow evenly to each condensation medium pipe 62. Thus, the purpose of improving the heat absorption balance among the condensation medium pipes 62 and further reducing the probability of the phenomenon that some condensation medium pipes 62 are overloaded while the utilization rate of other condensation medium pipes 62 is insufficient is achieved.

[0060] Example 8

[0061] As Figure 5 shown, on the basis of the above-mentioned Example 1, in this embodiment, the by-product gas treatment device further includes a heat insulation layer 12; the heat insulation layer 12 is arranged on the inner wall of the waste gas pipe 61.

[0062] Exemplarily, during implementation, the heat insulation layer 12 is arranged on the inner wall of the waste gas pipe 61 by means of gluing, pasting, clamping, etc., and the heat insulation layer 12 covers the entire inner wall of the waste gas pipe 61. The heat insulation layer 12 can be made of heat-resistant and good heat-insulating materials such as ceramic fiber, aluminum silicate fiber, and micro-porous heat insulation materials.

[0063] During use, when the waste gas enters the waste gas pipe 61, the heat insulation layer 12 can effectively reduce the loss of the heat of the waste gas in the waste gas pipe 61 along the side wall of the waste gas pipe 61 to the external environment. Thus, the purpose of improving the thermal efficiency of the by-product gas treatment device and enabling more heat to be absorbed and utilized by the condensation medium is achieved. At the same time, the heat insulation layer 12 can effectively reduce the probability that the external environment temperature affects the temperature of the waste gas in the waste gas pipe 61, and achieve the purpose of maintaining the heat exchange efficiency in the waste gas pipe 61.

[0064] Among them, the heat insulation layer 12 is arranged on the inner wall of the waste gas pipe 61, which can protect the waste gas pipe 61 and achieve the purpose of effectively reducing the risk of the waste gas pipe 61 being directly eroded by the high-temperature waste gas in the waste gas pipe 61, and further extending the service life of the waste gas pipe 61.

[0065] Although the present invention has been described herein with reference to multiple illustrative embodiments of the present invention, it should be understood that those skilled in the art can design many other modifications and embodiments, which will fall within the scope of the principles and spirit disclosed in this application. More specifically, within the scope of this application's disclosure, the drawings, and the claims, various variations and improvements can be made to the components and / or the layout of the subject combination layout. In addition to the variations and improvements made to the components and / or the layout, other uses will also be obvious to those skilled in the art.

Claims

1. A by-product gas treatment device suitable for heavy industrial production, comprising an equipment bearing base (1), on which a mounting substrate (2) is arranged, on which a waste gas dust filter unit (3), a waste gas treatment tower (4) and a waste gas temporary storage tank (5) are mounted, wherein the waste gas dust filter unit (3), the waste gas treatment tower (4) and the waste gas temporary storage tank (5) are sequentially connected along a waste gas flow path, characterized in that: Also includes: An exhaust gas waste heat absorption unit (6), the exhaust gas waste heat absorption unit (6) comprising an exhaust pipe (61) and a condensing medium pipe (62); the exhaust pipe (61) is arranged on the mounting substrate (2), one end of the exhaust pipe (61) is connected to an end of the exhaust gas dust filtering unit (3) away from the exhaust gas treatment tower (4), and the other end of the exhaust pipe (61) is used to receive the exhaust gas; the condensing medium pipe (62) is arranged in the exhaust pipe (61), and the condensing medium The tube (62) comprises a spiral tube body (621), wherein the spiral tube body (621) extends from one end of the exhaust pipe (61) in a direction toward the other end of the exhaust pipe (61), and at least two of the spiral tube bodies (621) are sequentially arranged along the outer wall of the exhaust pipe (61) in a direction toward the inner wall of the exhaust pipe (61), and a first exhaust gas flow channel (7) is arranged between two adjacent spiral tube bodies (621); wherein the directions in which the spiral tube bodies (621) convey the condensing medium are the same.

2. The by-product gas processing device according to claim 1, characterized in that: A second exhaust gas flow passage (8) is provided between the outer wall of the condensing medium pipe (62) and the inner wall of the exhaust gas pipe (61).

3. The by-product gas processing device according to claim 1, characterized in that: The number of the condensing medium pipes (62) is set to be multiple, and the multiple condensing medium pipes (62) are evenly arranged around the axis of the exhaust pipe (61).

4. The by-product gas processing device according to claim 1, characterized in that: Also includes a connecting plate (9); The number of the connecting plates (9) is two, and the two connecting plates (9) are respectively connected to the two ends of the exhaust pipe (61); Wherein, both ends of the condensing medium pipe (62) are respectively passed through the two connecting plates (9).

5. The by-product gas processing device according to claim 4, characterized in that: An exhaust gas outlet (10) is provided on a connecting plate (9) close to the exhaust gas dust filtering unit (3).

6. The by-product gas processing device according to claim 4 or 5, characterized in that: An exhaust gas feed port (11) is provided on a connection plate (9) away from the exhaust gas dust filtering unit (3).

7. The by-product gas processing device according to claim 6, characterized in that: The axis of the exhaust gas feed port (11) is the same as the axis of the exhaust gas pipe (61).

8. The by-product gas processing device according to claim 1, characterized in that: Also includes a heat insulation layer (12); The heat insulation layer (12) is arranged on the inner wall of the exhaust pipe (61).

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