Parallel double-regeneration-tower structure

Abstract

The utility model discloses a parallel double-regeneration tower structure, which relates to the technical field of industrial desulfurization, is used for industrial desulfurization, and comprises a tower structure, a hot air circulating system and a control valve system, the tower structure comprises two tower bodies which are arranged in parallel in the horizontal direction, inner cavities of the two tower bodies comprise heating parts and cooling parts which are communicated with each other in the vertical direction, the hot air circulating system comprises a heating air path and a circulating air path, and the two ends of the heating air path are connected to air inlet parts of the two heating parts and air outlet parts of the two cooling parts correspondingly; the two ends of the circulating air path are connected to the air outlet parts of the two heating parts and the air inlet parts of the two cooling parts respectively; according to the technical scheme provided by the utility model, flexible switching between single-tower operation and double-tower operation of the two tower bodies can be realized, and the temperature consistency of corresponding sections in the two tower bodies can be effectively ensured, so that the production efficiency is favorably improved, and the use flexibility of the whole structure is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial desulfurization technical field, especially in parallel double regeneration tower structure. BACKGROUND

[0002] The regeneration system is the key system of the activated coke desulfurization process system, after the activated coke adsorbs SO2 saturation, the activated coke regeneration system releases the SO2 adsorbed by the activated coke to heat, makes the activated coke restore activity, realizes the regeneration of activated coke, and the SO2-rich gas generated in the regeneration process is collected in the regeneration tower, and the SO2-rich gas is transported to the acid making system to make acid, so that the recovery of sulfur resources is realized.

[0003] As the key system of the activated coke desulfurization process system, whether the regeneration system can run stably is related to the stable operation of the whole desulfurization system, and the stable operation of the regeneration system is crucial.

[0004] At present, the regeneration tower configured in the regeneration system is generally a cap cover type double tower, a feeding cone is shared at the top, and the feeding cone is divided into two outlets; the regeneration system heats and warms the activated coke through the regeneration tower first, and then cools and cools the activated coke after the regeneration of the activated coke is completed; in order to avoid the activated coke from catching fire, the activated coke is heated or cooled in a non-contact manner, the activated coke goes through the tube, and the air for heating or cooling the activated coke goes through the shell. The production temperature in the tower is controlled through the air supply system in the production process, but in the production process of the two tower bodies of the traditional double tower system, the temperatures of the corresponding sections in the two towers are difficult to keep consistent, which can easily affect the regeneration of the activated coke. CONTENT OF THE UTILITY MODEL

[0005] The main purpose of the utility model is to provide a kind of parallel double regeneration tower structure, to solve the problem that the temperature of the corresponding section in the two towers is difficult to keep consistent in the production process of the two tower bodies of the traditional double tower system, which can easily affect the regeneration of the activated coke.

[0006] To achieve the above purpose, the parallel double regeneration tower structure provided by the utility model comprises:

[0007] Tower structure, including two tower bodies arranged in parallel in horizontal direction, the inner cavity of two tower bodies includes heating part and cooling part communicated with each other in vertical direction;

[0008] Hot air circulation system, including heating air path and circulating air path, the two ends of heating air path are connected to the air inlet part of two heating parts and the air outlet part of two cooling parts respectively, and the two ends of circulating air path are connected to the air outlet part of two heating parts and the air inlet part of two cooling parts respectively; and,

[0009] A control valve system is arranged on the heating air path and the circulating air path to adjust the air volume in the two heating sections and the two cooling sections.

[0010] In an embodiment, the tower body is provided with a feeding port and a discharging port at the upper end and the lower end, respectively.

[0011] The heating section comprises a preheating section and a heating section, the preheating section is arranged close to the feeding port, and the heating section is arranged at the lower end of the preheating section.

[0012] The cooling section comprises a first cooling section, the first cooling section is arranged between the heating section and the discharging port.

[0013] The air inlet end of the heating air path and the air outlet end of the circulating air path are connected to the first cooling section, the air outlet end of the heating air path is connected to the heating section, and the air inlet end of the circulating air path is connected to the preheating section.

[0014] In an embodiment, the circulating air path comprises:

[0015] A high-temperature fan; and

[0016] A circulating connecting pipeline comprising two first air inlet branch pipes and two first air outlet branch pipes, the two first air inlet branch pipes are arranged at the air inlet of the high-temperature fan, and the other ends of the two first air inlet branch pipes are connected to the air outlets of the two preheating sections, respectively, the two first air outlet branch pipes are arranged at the air outlet of the high-temperature fan, and the other ends of the two first air outlet branch pipes are connected to the air inlets of the two first cooling sections, respectively.

[0017] The control valve system is used to control the air volume in the two first air inlet branch pipes and the two first air outlet branch pipes.

[0018] In an embodiment, the heating air path comprises:

[0019] A heating furnace; and

[0020] A heating connecting pipeline comprising two second air inlet branch pipes and two second air outlet branch pipes, the two second air inlet branch pipes are arranged at the air inlet of the heating furnace, and the other ends of the two second air inlet branch pipes are connected to the air outlets of the two first cooling sections, respectively, the two second air outlet branch pipes are arranged at the air outlet of the heating furnace, and the other ends of the two second air outlet branch pipes are connected to the air inlets of the two preheating sections, respectively.

[0021] The control valve system is used to control the air volume in the two second air inlet branch pipes and the two second air outlet branch pipes.

[0022] In an embodiment, the control valve system comprises two first regulating valves and two second regulating valves, the two first regulating valves are respectively arranged on the two first air supply branch pipes, and the two second regulating valves are respectively arranged on the two second air supply branch pipes.

[0023] In an embodiment, the control valve system further comprises two first shutoff valves and two second shutoff valves, the two first shutoff valves are respectively arranged on the two first air inlet branch pipes, and the two second shutoff valves are respectively arranged on the two second air inlet branch pipes.

[0024] In an embodiment, the cooling part further comprises a second cooling section arranged between the first cooling section and the discharge port, the air outlet of the second cooling section is arranged outside the tower body, the air inlets of the two second cooling sections are respectively provided with air inlet pipes, one end of the two air inlet pipes is connected with a low-temperature fan, and the third regulating valve is arranged on the two air inlet pipes.

[0025] In an embodiment, a buffer section is arranged between the material inlet and the preheating section; and / or,

[0026] An air extraction section is arranged between the heating section and the first cooling section.

[0027] In an embodiment, the parallel double-regeneration-tower structure further comprises a material feeding structure, and the material feeding structure comprises:

[0028] a material conveying member;

[0029] a material pipe assembly comprising a main material pipe and two auxiliary material pipes, the main material pipe is arranged at one end of the conveying member, one end of the two auxiliary material pipes is connected with the main material pipe, and the other end of the two auxiliary material pipes is respectively connected with the two buffer sections; and,

[0030] a valve body assembly comprising a discharge valve and two plug valves, the discharge valve is arranged on the main material pipe, and the two plug valves are respectively arranged on the two auxiliary material pipes.

[0031] In an embodiment, a discharge pipe is arranged at the discharge port, the discharge pipe is provided with a discharge valve, and one end of the discharge pipe is provided with a corresponding discharge conveying member.

[0032] In the technical scheme of the utility model, the independent parallel double-tower design makes each column of regeneration towers be able to run in single column or in parallel, realizes independent running and parallel running, and according to the load changes such as sintering flue gas flow and SO2 concentration, the number and mode of the running towers can be flexibly allocated, and the flexibility of running allocation is greatly enhanced.

[0033] The independent feed inlet structure is designed with a plug valve, which can adjust the flow of active coke into the regeneration tower or cut off the feed. By adjusting the flow of active coke into the regeneration tower, the flow into the two columns of regeneration towers can be accurately controlled, so that the active coke entering the two columns of towers is equal, and the temperature of the active coke in each section of the two columns of regeneration towers is basically the same, thereby avoiding large deviations in the temperature of the active coke in each section, and thus avoiding large deviations in the regeneration effect of the active coke in the two columns of towers due to different temperatures.

[0034] In the hot air circulation system, an adjusting valve is arranged at the inlet of the first cold section of each column of towers, a shut-off valve is arranged at the outlet of the preheating section, and the high-temperature fan is controlled by frequency conversion. The hot air system can provide hot air for any single column of towers or parallel double columns of towers, and is flexible in control, can accurately control the temperature of the active coke, and can realize load adjustment.

[0035] In the cold air system, an adjusting valve is arranged at the inlet of the second cold section of each column of towers, and the low-temperature fan is controlled by frequency conversion. The cold air system can provide cold air for any single column of towers or parallel double columns of towers, and is flexible in control, can accurately control the temperature of the active coke, and can realize load adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0037] Figure 1 The overall structure schematic diagram of an embodiment of the parallel double regeneration tower structure provided by the present application.

[0038] Explanation of reference numerals:

[0039] 100, parallel double regenerative tower structure; 1, tower body; 11, heating part; 111, preheating section; 112, heating section; 12, cooling part; 121, first cooling section; 122, second cooling section; 13, feeding port; 14, discharging port; 15, buffer section; 16, air extraction section; 17, discharging section; 2, hot air circulation system; 21, circulating air path; 211, high-temperature air blower; 212, circulating connecting pipeline; 2121, first air inlet branch pipe; 2122, first air outlet branch pipe; 22, heating air path; 221, heating furnace; 222, heating connecting pipeline; 2221, second air inlet branch pipe; 2222, second air outlet branch pipe; 3, control valve system; 31, first regulating valve; 32, second regulating valve; 33, first shut-off valve; 34, second shut-off valve; 4, air inlet pipe; 41, third regulating valve; 5, low-temperature air blower; 6, feeding structure; 61, feeding conveying part; 62, feeding pipe assembly; 621, main feeding pipe; 622, auxiliary feeding pipe; 63, valve body assembly; 631, discharging valve; 632, gate valve; 7, discharging pipe; 71, discharging valve; 8, discharging conveying part.

[0040] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0042] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0043] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0044] The regeneration system is the key system of the activated coke desulfurization process system, after the activated coke adsorbs SO2, the activated coke regeneration system releases the SO2 adsorbed by the activated coke, so that the activated coke recovers activity, realizes the regeneration of the activated coke, and collects the SO2-rich gas generated in the regeneration process in the regeneration tower, and transports the collected SO2-rich gas to the acid making system for acid making, so as to realize the recovery of sulfur resources.

[0045] As the key system of the activated coke desulfurization process system, whether the regeneration system can stably run relates to the stable running of the whole desulfurization system, and the stable running of the regeneration system is crucial.

[0046] At present, the regeneration tower configured in the regeneration system is generally a cap cover type double tower, which shares a feeding cone at the top, and the feeding cone is divided into two outlets; the regeneration system heats and warms the activated coke through the regeneration tower, and then cools and cools the activated coke after the regeneration of the activated coke is completed; in order to avoid the ignition accident of the activated coke with air, a non-contact method is used to heat or cool the activated coke, the activated coke goes through the tube, and the air used for heating or cooling the activated coke goes through the shell. The production temperature in the tower is controlled through the air supply system in the production process, but in the traditional double tower system, the temperatures of the corresponding sections in the two towers are difficult to keep consistent during the production process of the two towers, which is easy to affect the regeneration of the activated coke.

[0047] The utility model provides a kind of parallel double regeneration tower structure 100 for solving the above problems.

[0048] Please refer to Figure 1In an embodiment of the utility model, provide a kind of parallel double regeneration tower structure 100, can be according to actual use demand, control and parallelly arranged two tower body 1 single operation or parallel double-tower operation, can be according to sintering flue gas flow, SO2 Concentration etc. Load variation, flexible deployment operation tower quantity, mode, the flexibility of operation deployment is greatly enhanced. Specifically, the parallel double regeneration tower structure 100 mainly includes tower structure, hot air circulation system 2 and control valve system 3. Among them, the tower structure in the embodiment mainly includes two tower body 1 being arranged along vertical direction, two tower body 1 structure is same, its inner cavity at least includes heating portion 11 and cooling portion 12 being arranged along vertical direction from top to bottom along and conducting, the heating portion 11 and the cooling portion 12 are sent by heating air path 22 and circulating air path 21, to regulate and control tower temperature. In order to carry out movement control to the single or parallel operation of two tower body 1, ensure that the temperature of each section of active coke corresponding to two tower body 1 parallel operation is basically same, avoid that each section of active coke temperature appears larger deviation, to cause the regeneration effect of active coke to appear larger deviation due to temperature difference of two columns of tower, in the embodiment, the ventilation of two heating portion 11 and two cooling portion 12 is controlled by control valve system 3, to regulate and control the temperature of each section in two tower body 1, specifically, the gas with lower temperature in cooling portion 12 is heated by heating air path 22, and reaches heating portion 11 to heat and treat active coke, hot air moves from bottom to top, can strengthen air convection, improve heating effect, one end of circulating air path 21 is connected with the air outlet of heating portion 11, circulating air path 21 can recycle hot air in heating portion 11, and send to cooling portion 12 to cool material, in this process, air path circulation can be realized, while guaranteeing good heating and cooling effect, it is beneficial to energy saving, it needs to be explained that two heating portion 11 and two cooling portion 12 are separately connected with heating air path 22 and circulating air path 21, in the process of actual production, it can be intervened by control valve system 3, so that the temperature of each section corresponding to two tower body 1 can be well controlled to keep consistent, and control valve system 3 can control two tower body 1 to operate separately or in parallel according to current production demand, greatly improve the flexibility in production process, and it is beneficial to improve production quality.

[0049] The upper and lower ends of the tower body 1 are respectively provided with a feeding port 13 and a discharging port 14. In actual production, the activated coke is fed into the tower body 1 from the feeding port 13. Because the hot air first passes through the heating section 112 and then enters the preheating section 111 upward, the gas temperature of the preheating section 111 is relatively lower than that of the heating section 112. At this time, the preheating section 111 just preheats the activated coke. When the activated coke enters the heating section 112 from top to bottom, the heating air path 22 can send high-temperature gas. The cooperation of the preheating section 111 and the heating section 112 can better heat and treat the activated coke. In this process, the temperature of the activated coke gradually rises from 90°C to about 430°C, and the activated coke is kept at 430°C for a certain period of time in the heating section 112 to complete the regeneration of SO2 adsorbed by the activated coke and restore the activity of the activated coke. Then the high-temperature activated coke enters the first cooling section 121. At this time, the circulating air path 21 guides the gas exchanged in the preheating section 111 into the first cooling section 121 to cool the material and recover part of the heat of the activated coke.

[0050] The circulating air path 21 includes a high-temperature fan 211 and a circulating connection pipeline 212. The connection pipeline includes two first air inlet branch pipes 2121 and two first air outlet branch pipes 2122. In actual air feeding, the temperature of the gas flow after heat exchange in the two preheating sections 111 is reduced. At this time, the high-temperature fan 211 sucks the gas exchanged in the two preheating sections 111 through the two first air inlet branch pipes 2121, and then guides the sucked gas into the two first cooling sections 121 through the two first air outlet branch pipes 2122 to cool the high-temperature activated coke. At this time, the gas guided into the two first cooling sections 121 still has a certain temperature (lower than that in the heating section 112). The cooling by the backflow gas can realize the stepwise cooling effect of the high-temperature material, so that the reaction of the material is more sufficient and stable. In addition, it should be noted that at least part of the structure of the control system is arranged on the two first air inlet branch pipes 2121 and the two first air outlet branch pipes 2122. In actual production, the air flow in the two first air inlet branch pipes 2121 and the two first air outlet branch pipes 2122 can be controlled by the control valve system 3 according to the actual situation, so as to realize the synchronous control of the temperature in the two tower bodies 1.

[0051] The heating air path 22 comprises a heating furnace 221 and a heating connecting pipeline 222, the heating connecting pipeline 222 comprises two second air inlet branch pipes 2221 and two second air outlet branch pipes 2222, when the gas in the two first cold sections 121 cools the active coke, the gas after heat exchange is heated, enters the heating furnace 221 through the two second air inlet branch pipes 2221, and is further heated, when the temperature reaches the set value, the gas is introduced into the air inlet of the heating section 112 through the second air outlet branch pipe 2222 to heat the active coke in the heating section 112, it should be noted that the gas introduced into the heating furnace 221 through the second air inlet branch pipe 2221 has a certain temperature after heat exchange, so that the working energy consumption of the heating furnace 221 can be reduced to a certain extent. And in the actual production process, part of the structure of the control valve system 3 is arranged on the two second air inlet branch pipes 2221 and the two second air outlet branch pipes 2222, the gas flow in the two second air inlet branch pipes 2221 and the two second air outlet branch pipes 2222 can be controlled through the control valve system 3, so as to well ensure the consistency of the temperature between the corresponding sections of the two tower bodies 1 in the process of common operation of the double-tower structure.

[0052] The control valve system 3 comprises two first regulating valves 31 and two second regulating valves 32. Specifically, the two first regulating valves 31 are arranged on the two first air outlet branch pipes 2122 respectively, and the two second regulating valves 32 are arranged on the two second air outlet branch pipes 2222 respectively. In the actual production process, the actual air inlet amount of the two first cold sections 121 can be adjusted respectively through the two first regulating valves 31, and the actual air inlet amount of the two heating sections 112 can be adjusted respectively through the two second regulating valves 32, so as to control the temperature of each section structure in the two tower bodies 1.

[0053] The control valve system 3 further comprises two first shut-off valves 33 and two second shut-off valves 34. Specifically, the two first shut-off valves 33 are arranged on the two first air inlet branch pipes 2121 respectively, and the two second shut-off valves 34 are arranged on the two second air inlet branch pipes 2221 respectively. In the actual production process, the two first shut-off valves 33 can control the on-off state of the two first air inlet branch pipes 2121 respectively, and the two second shut-off valves 34 can control the on-off state of the two second air inlet branch pipes 2221 respectively, so as to realize the single-column operation of any one of the two tower bodies 1.

[0054] And it is conceivable that the high-temperature fan 211 adopts frequency control, which can work with the above-mentioned shut-off valve and adjusting valve through hole, so as to provide hot air for any single column tower, parallel double tower, flexible control, accurate control of the temperature of activated coke, and load regulation.

[0055] After the activated coke is cooled by the first cooling section 121, in order to further cool it, a second cooling section 122 is arranged between the first cooling section 121 and the discharge port 14. In actual production, low-temperature gas is introduced into the second cooling section 122 through the low-temperature fan 5. After the low-temperature air exchanges heat in the second cooling section 122, it is discharged outward through the air outlet of the second cooling section 122, and the air flow in the two inlet air pipes 4 can be controlled in real time through the two third adjusting valves 41, which synchronously ensures the cooling effect of the materials in the two second cooling sections 122. The low-temperature fan 5 adopts frequency control. The cold air system can provide cold air for any single column tower, parallel double tower, flexible control, accurate control of the temperature of activated coke, and load regulation.

[0056] A buffer section 15 is arranged between the preheating section 111 and the feed port 13, which can process the dropping speed of the material, so that the material can be evenly discharged, and the uniformity of the reaction is promoted. An air extraction section 16 is arranged between the heating section 112 and the first cooling section 121, which can control the pressure in the regeneration tower, prevent the adsorbent from breaking or leaking due to excessive pressure, and prevent the gas from flowing normally due to low pressure. It plays an important role in controlling the pressure balance in the tower body 1, regenerating the adsorbent, and preventing the adsorbent from being blocked.

[0057] In order to ensure the uniformity of the discharge and the uniform reaction of the reactants in the two tower bodies 1 during the operation of the double towers, a feed structure 6 is arranged at the two feed ports 13. One end of the feed conveying member 61 is connected to the desulfurization tower. The feed conveying member 61 transports the reactant to the feed pipe assembly 62, and the valve body assembly 63 on the feed pipe assembly 62 controls the feeding amount in real time. Specifically, the material first enters the main feed pipe 621 through the feed conveying member 61. The main feed pipe 621 controls the discharge through the discharge valve 631, so as to uniformly distribute a certain amount of material to the two auxiliary feed pipes 622. According to the load and temperature conditions, the activated coke flow entering the two feed ports 13 is controlled through the two plug valves 632. If the load is small, single column tower operation is realized by closing one of the plug valves 632.

[0058] The discharge outlet 14 is provided with a discharge section 17 between the second cold section 122, the material is gathered in the discharge section 17, and is discharged outside through the discharge pipe 7, the discharge speed is controlled through the discharge valve 71, and finally transported through the discharge output.

[0059] The feeding conveying part 61 and the discharging conveying part 8 are both provided with chain bucket machines to transport the material.

[0060] The above is only an exemplary embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A side-by-side dual regenerator structure for industrial desulfurization, characterized by, The application relates to a tower structure, a hot air circulation system and a control valve system. The tower structure comprises two tower bodies arranged side by side in the horizontal direction, and the inner cavities of the two tower bodies each comprise a heating part and a cooling part which are communicated with each other in the vertical direction. The hot air circulation system comprises a heating air path and a circulation air path, two ends of the heating air path are connected to the air inlet parts of the two heating parts and the air outlet parts of the two cooling parts respectively, and two ends of the circulation air path are connected to the air outlet parts of the two heating parts and the air inlet parts of the two cooling parts respectively. The control valve system is arranged on the heating air path and the circulation air path and is used for adjusting the air volume of the two heating parts and the two cooling parts.

2. The side-by-side dual regenerative tower structure of claim 1, wherein The upper and lower ends of the tower body are respectively provided with an air inlet and an air outlet. The heating part comprises a preheating section and a heating section, the preheating section is arranged close to the air inlet, and the heating section is arranged at the lower end of the preheating section. The cooling part comprises a first cooling section, and the first cooling section is arranged between the heating section and the air outlet. The air inlet end of the heating air path and the air outlet end of the circulation air path are connected to the first cooling section, the air outlet end of the heating air path is connected to the heating section, and the air inlet end of the circulation air path is connected to the preheating section.

3. The side-by-side dual regenerative tower structure of claim 2, wherein The circulation air path comprises a high-temperature fan and a circulation connecting pipeline. The circulation connecting pipeline comprises two first air inlet branch pipes and two first air outlet branch pipes, the two first air inlet branch pipes are arranged at the air inlet of the high-temperature fan, the other ends of the two first air inlet branch pipes are respectively connected to the air outlets of the two preheating sections, the two first air outlet branch pipes are arranged at the air outlet of the high-temperature fan, and the other ends of the two first air outlet branch pipes are respectively connected to the air inlets of the two first cooling sections. The control valve system is used for controlling the air volume of the two first air inlet branch pipes and the two first air outlet branch pipes. The heating air path comprises a heating furnace and a heating connecting pipeline.

4. The side-by-side dual regenerative tower structure of claim 3, wherein The heating connecting pipeline comprises two second air inlet branch pipes and two second air outlet branch pipes, the two second air inlet branch pipes are arranged at the air inlet of the heating furnace, the other ends of the two second air inlet branch pipes are respectively connected to the air outlets of the two first cooling sections, the two second air outlet branch pipes are arranged at the air outlet of the heating furnace, and the other ends of the two second air outlet branch pipes are respectively connected to the air inlets of the two preheating sections. The control valve system is used for controlling the air volume of the two second air inlet branch pipes and the two second air outlet branch pipes. The control valve system comprises two first adjusting valves and two second adjusting valves, the two first adjusting valves are respectively arranged on the two first air outlet branch pipes, and the two second adjusting valves are respectively arranged on the two second air outlet branch pipes. The control valve system further comprises two first shutoff valves and two second shutoff valves, the two first shutoff valves are respectively arranged on the two first air inlet branch pipes, and the two second shutoff valves are respectively arranged on the two second air inlet branch pipes.

5. The side-by-side dual regenerative tower structure of claim 4, wherein ​ 6. The side-by-side dual regenerative tower structure of claim 4, wherein ​ 7. The side-by-side dual regenerative tower structure of claim 6, wherein The cooling part further comprises a second cooling section arranged between the first cooling section and the discharge port, an air outlet of the second cooling section is arranged outside the tower body, air inlets of the two second cooling sections are respectively provided with air inlet pipes, one end of the two air inlet pipes is connected with a low-temperature fan, and the two air inlet pipes are respectively provided with third adjusting valves.

8. The side-by-side dual regenerative tower structure of claim 2, wherein The feeding port and the preheating section are provided with a buffer section; and / or, The heating section and the first cooling section are provided with an air extraction section.

9. The side-by-side dual regenerative tower structure of claim 8, wherein, The parallel double-regeneration-tower structure further comprises a feeding structure, the feeding structure comprises: a feeding conveying member; a feeding pipe assembly comprising a main feeding pipe and two auxiliary feeding pipes, the main feeding pipe is arranged at one end of the conveying member, one end of the two auxiliary feeding pipes is connected with the main feeding pipe, and the other end of the two auxiliary feeding pipes is respectively connected with the two buffer sections; and a valve body assembly comprising a discharge valve and two plug valves, the discharge valve is arranged on the main feeding pipe, and the two plug valves are respectively arranged on the two auxiliary feeding pipes.

10. The side-by-side dual regenerative tower structure of claim 9, wherein, The discharge port is provided with a discharge pipe, the discharge pipe is provided with a discharge valve, and one end of the discharge pipe is provided with a corresponding discharge conveying member.

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