Device for secondary utilization of waste heat in the production of cyclohexane plasticizers

Abstract

The present invention relates to the field of cyclohexane plasticizer preparation, and specifically to a waste heat secondary utilization device in the production of cyclohexane plasticizers, including a reaction tube, a temperature control mechanism is arranged inside the reaction tube, and the temperature control mechanism includes a first container, a second container and an adjustment component; the first container and the second container are filled with a heat transfer medium and can be deformed under the action of an external force, and the adjustment component can sense the temperature in the reaction tube and act on the first container and the second container. When the local temperature rises, the present invention increases the cross-sectional area of ​​the first container and the second container at the corresponding height of the position, so that the flow rate of the heat transfer medium at the location is slowed down and the heat absorption is increased; when the temperature at a certain location is reduced, the cross-sectional area of ​​the first container and the second container at the corresponding height of the location is reduced, so that the flow rate of the heat transfer medium at the location is increased and the heat absorption is reduced, so as to maintain the balance and stability of the temperature inside the reaction tube while absorbing heat, improve resource utilization, and ensure the smooth progress of the preparation reaction.

Description

Technical Field

[0001] The invention relates to the field of cyclohexane plasticizer preparation, and in particular to a device for secondary utilization of waste heat in the production of cyclohexane plasticizers. Background Art

[0002] Phthalate plasticizers are an important type of chemical product additives. As additives, they are widely used in materials such as plastic products, concrete, plaster, cement, gypsum, cosmetics and cleaning agents. Due to their potential toxicity, in industrial production, phthalates are usually hydrogenated under certain conditions to produce harmless cyclohexane plasticizer products. The cyclohexane plasticizer products can then be separated and purified at higher temperatures, which is of great significance for the realization of industrialization.

[0003] The reaction of liquid phase hydrogenation of ortho-phthalate plasticizers to produce cyclohexane plasticizers is a highly exothermic reaction, and the purification process requires a large amount of heat absorption. Therefore, the heat released during the preparation of cyclohexane plasticizers can be recovered and used for separation and purification to provide heat for separation and purification, thereby realizing heat recovery and improving resource utilization. At the same time, during the recovery and reuse process, a suitable reaction temperature range helps to reduce the generation of by-products, so it is very important to maintain a stable temperature in the reaction space. Summary of the invention

[0004] The purpose of the present invention is to provide a waste heat secondary utilization device, which can not only recycle the heat released during the liquid phase hydrogenation of ortho-phthalate plasticizers to produce cyclohexane plasticizers, but also maintain the temperature balance and stability in the reaction space.

[0005] The device for secondary utilization of waste heat in the production of cyclohexane plasticizers of the present invention adopts the following technical scheme: comprising a rotatable reaction cylinder, the reaction cylinder comprising an inner cylinder wall and an outer cylinder wall, the cross-section of the inner cylinder wall and the outer cylinder wall are circular and the lower ends are connected so that the reaction cylinder forms an annular containing chamber, and the prepared raw materials are placed in the containing chamber;

[0006] A temperature control mechanism is arranged inside the accommodating chamber, and the temperature control mechanism includes a first accommodating member, a second accommodating member and an adjusting assembly; the first accommodating member and the second accommodating member are arranged symmetrically about the radial line of the reaction cylinder and both ends of the lower parts thereof are connected through a connecting structure, a medium inlet is arranged on the first accommodating member, and a medium outlet is arranged on the second accommodating member, and heat transfer medium is filled in the first accommodating member and the second accommodating member, and the first accommodating member and the second accommodating member extend in an arc shape and can be deformed under the action of an external force;

[0007] The adjusting component is transmission-connected with the first container and the second container. The adjusting component is configured such that when the temperature at a certain position in the reaction tube increases, the inner walls of the first container and the second container move inward and the outer walls move outward at the corresponding height of the position; and when the temperature at a certain position in the reaction tube decreases, the inner walls of the first container and the second container move outward and the outer walls move inward at the corresponding height of the position.

[0008] Optionally, the adjustment component includes a plurality of adjustment parts evenly spaced up and down, each adjustment part includes an inner ring, an outer ring, an inner pull rope, an outer pull rope and a driving structure; the inner ring and the outer ring are coaxially arranged and the inner ring is located on the inner side of the first container and the second container, and the outer ring is located on the outer side of the first container and the second container; the inner ring includes an inner fixed ring and an inner movable ring, the outer ring includes an outer fixed ring and an outer movable ring, a vertical column is arranged on the connecting structure, the inner fixed ring and the outer fixed ring are both connected to the vertical column, the inner movable ring is rotatably arranged on the inner peripheral wall of the inner fixed ring, and the outer movable ring is rotatably arranged on the outer peripheral wall of the outer fixed ring;

[0009] An inner positioning spring is connected between the inner side walls of the first and second accommodating parts and the inner fixed ring, and an outer positioning spring is connected between the outer side walls of the first and second accommodating parts and the outer fixed ring;

[0010] One end of the inner pull rope is connected to the inner movable ring, and the other end passes through the inner positioning spring and is connected to the inner side wall of the first container or the second container; one end of the outer pull rope is connected to the outer movable ring, and the other end passes through the outer positioning spring and is connected to the outer side wall of the first container or the second container; the inner movable ring and the outer movable ring are configured to drive the inner side walls of the first container and the second container to move inward and the outer side walls to move outward when the inner pull rope and the outer pull rope are rotated around the first direction, and to drive the inner side walls of the first container and the second container to move outward and the outer side walls to move inward when the inner pull rope and the outer pull rope are rotated around the second direction;

[0011] The driving structure is configured to drive the inner moving ring or outer moving ring at a corresponding position to rotate in a first direction when the temperature at a certain position in the reaction cylinder increases, and to drive the inner moving ring or outer moving ring at the corresponding position to rotate in a second direction when the temperature at a certain position in the reaction cylinder decreases.

[0012] Optionally, an inner reserved groove is provided on the inner moving ring, and the front end of the inner pull rope along the first direction is located inside the inner reserved groove and connected to the inner moving ring; an outer reserved groove is provided on the outer moving ring, and the front end of the outer pull rope along the first direction is located inside the outer reserved groove and connected to the outer moving ring.

[0013] Optionally, the driving structure includes an inner telescopic cylinder and an outer telescopic cylinder, one end of the inner telescopic cylinder is connected to the inner fixed ring and the other end is connected to the inner movable ring; one end of the outer telescopic cylinder is connected to the outer fixed ring and the other end is connected to the outer movable ring, and the inner and outer telescopic cylinders are filled with temperature-sensitive medium.

[0014] Optionally, the inner telescopic cylinder includes an inner telescopic column and an inner telescopic cylinder, the inner telescopic cylinder is connected to an inner fixed ring, the inner telescopic column is connected to an inner movable ring, and the inner telescopic column is located in front of the inner telescopic cylinder along the first direction; the outer telescopic cylinder includes an outer telescopic column and an outer telescopic cylinder, the outer telescopic cylinder is connected to an outer fixed ring, the outer telescopic column is connected to an outer movable ring, and the outer telescopic column is located in front of the outer telescopic cylinder along the first direction.

[0015] Optionally, the inner cylinder wall is provided with an inner cylinder spiral sheet, the outer cylinder wall is provided with an outer cylinder spiral sheet, the inner cylinder spiral sheet and the outer cylinder spiral sheet are located in the accommodating chamber of the reaction cylinder and have opposite spiral directions, and the first accommodating part and the second accommodating part have a gap with the bottom of the reaction cylinder.

[0016] Optionally, in the initial state, the cross-sections of the side walls of the first accommodating part and the second accommodating part are wavy.

[0017] Optionally, a plurality of inner positioning springs and a plurality of outer positioning springs are provided and are evenly distributed along the circumferential direction.

[0018] Optionally, two inner telescopic cylinders and two outer telescopic cylinders are evenly distributed along the circumferential direction.

[0019] Optionally, a purification cylinder is also included, and the structure of the purification cylinder is the same as that of the reaction cylinder. A temperature control mechanism is arranged inside the purification cylinder, and the temperature control mechanism includes the first container and the second container. The heat transfer medium inside the first container and the second container of the temperature control mechanism and the heat transfer medium inside the first container and the second container of the temperature control mechanism circulate, and the temperature control mechanism is configured to reduce the cross-sectional area of ​​the first container and the second container at a certain position inside the purification cylinder when the temperature at that position increases, and to increase the cross-sectional area of ​​the first container and the second container at that position when the temperature at that position inside the purification cylinder decreases.

[0020] The beneficial effects of the present invention are as follows: the reaction cylinder in the waste heat secondary utilization device in the production of cyclohexane plasticizers of the present invention has an annular accommodating chamber, and a temperature control mechanism is arranged inside the reaction cylinder, the temperature control mechanism includes a first container, a second container and an adjustment component, the first container and the second container extend in an arc shape and can be deformed under the action of external force, the first container and the second container are filled with heat transfer medium, the heat transfer medium that absorbs heat and heats up in the first container and the second container can be introduced into the purification cylinder for purification use, and the heat transfer medium used for purification is returned to the first container and the second container in the reaction cylinder again, thereby circulating and improving the utilization rate. At the same time, the regulating component can sense the temperature inside the reaction tube and act on the first container and the second container. When the local temperature rises, the cross-sectional area of ​​the first container and the second container at the height corresponding to the position is increased, that is, the cross-sectional area of ​​the heat transfer medium flowing at the position is increased, so that the flow rate of the heat transfer medium at the position is slowed down and the amount of heat absorbed is increased. When the temperature at a certain place decreases, the cross-sectional area of ​​the first container and the second container at the height corresponding to the position is reduced, that is, the cross-sectional area of ​​the heat transfer medium flowing at the position is reduced, so that the flow rate of the heat transfer medium at the position is increased and the amount of heat absorbed is reduced, thereby maintaining the balanced and stable temperature inside the reaction tube while absorbing heat, improving resource utilization and ensuring the smooth progress of the preparation reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0022] Figure 1 This is a schematic diagram of the overall structure of the device for secondary utilization of waste heat in the production of cyclohexane plasticizers of the present invention;

[0023] Figure 2 It is a cutaway perspective view of the device for secondary utilization of waste heat in the production of cyclohexane plasticizers of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 It is a structural schematic diagram of the temperature control mechanism in the present invention;

[0026] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0027] Figure 6 It is a cutaway top view of the temperature control mechanism of the present invention;

[0028] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0029] Figure 8 for Figure 6 Enlarged view of point D in the middle.

[0030] In the figure: 100, reaction cylinder; 110, outer cylinder spiral sheet; 120, inner cylinder spiral sheet; 130, inner cylinder wall; 140, outer cylinder wall; 200, temperature control mechanism; 210, first container; 211, medium inlet; 220, vertical column; 230, outer fixed ring; 231, outer positioning spring; 232, outer telescopic cylinder; 240, outer moving ring; 241, outer reserved groove; 242, outer pull rope; 243, outer telescopic column; 250, inner moving ring; 251, inner reserved groove; 252, inner pull rope; 253, inner telescopic column; 260, inner fixed ring; 261, inner positioning spring; 262, inner telescopic cylinder; 270, second container; 271, medium outlet. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 8 As shown, the device for secondary utilization of waste heat in the production of cyclohexane plasticizers of the present invention includes a rotatable reaction cylinder 100, and the reaction cylinder 100 includes an inner cylinder wall 130 and an outer cylinder wall 140. The cross-sections of the inner cylinder wall 130 and the outer cylinder wall 140 are circular and the lower ends are connected to form an annular accommodating chamber of the reaction cylinder 100. The prepared raw materials are placed in the accommodating chamber. The lower ends of the inner cylinder wall 130 and the outer cylinder wall 140 of the present invention are preferably integrally formed.

[0033] A temperature control mechanism 200 is arranged inside the accommodating chamber of the reaction cylinder 100, and the temperature control mechanism 200 includes a first accommodating member 210, a second accommodating member 270 and an adjusting component arranged in the accommodating chamber of the reaction cylinder 100; the first accommodating member 210 and the second accommodating member 270 are symmetrically arranged about the radial line of the reaction cylinder 100, and both ends of the lower part are connected and enclosed by a connecting structure, a medium inlet 211 is arranged on the first accommodating member 210, and a medium outlet 271 is arranged on the second accommodating member 270, and heat transfer medium is filled in the first accommodating member 210 and the second accommodating member 270, and the first accommodating member 210 and the second accommodating member 270 extend in an arc shape and can be deformed under the action of external force. More specifically, the first accommodating member 210 and the second accommodating member 270 can initially maintain a specific shape, and when a local part is subjected to external force, the local part can produce a certain deformation, for example, the first accommodating member 210 and the second accommodating member 270 can be made of special high-temperature resistant rubber and other materials.

[0034] The adjustment component is transmission-connected with the first container 210 and the second container 270. The adjustment component is configured to move the inner walls of the first container 210 and the second container 270 inward and the outer walls outward at a height corresponding to a certain local position in the reaction tube 100 when the temperature rises; and to move the inner walls of the first container 210 and the second container 270 outward and the outer walls inward at a height corresponding to the certain local position in the reaction tube 100 when the temperature drops.

[0035] It should be noted that the reaction of preparing cyclohexane plasticizers by liquid-phase hydrogenation of ortho-phthalate plasticizers is a strongly exothermic reaction. When in use, a room-temperature heat transfer medium can be injected into the first container 210 and the second container 270. During the reaction process of preparing the raw materials (liquid-phase hydrogenation of ortho-phthalate plasticizers), the heat transfer medium absorbs the heat released and its temperature rises. Then, the heated heat transfer medium is introduced into a purification cylinder (not shown in the figure) for high-temperature purification of the obtained crude cyclohexane plasticizer. The heat transfer medium after absorbing heat from the crude cyclohexane plasticizer is returned to the reaction cylinder 100 again, and this cycle is repeated to improve the utilization rate.

[0036] The heat transfer medium enters the first container 210 from the medium inlet 211, then enters the second container 270 from the connecting structure and flows upward, and finally flows out from the medium outlet 271, and the flow rate is constant at a fixed time. During the preparation process, the reaction cylinder 100 rotates under the drive of the power mechanism (not shown in the figure), and cooperates with the first container 210 and the second container 270 to stir the prepared raw materials. If a certain place reacts violently and causes a local temperature rise, the inner wall of the first container 210 and the second container 270 at the corresponding height of the position is moved inward and the outer wall is moved outward, so that the cross-sectional area of ​​the heat transfer medium at this position is increased, the flow rate of the heat transfer medium at this position is slowed down, and the heat absorption is increased. At this time, the gap between the side walls of the first container 210 and the second container 270 at this position and the inner wall of the reaction cylinder 100 is reduced, and the stirring effect of the first container 210 and the second container 270 on the prepared raw materials at this position is improved, and the rotation of the prepared raw materials at this position is improved. The rotation speed is increased relative to other positions, the heat can be quickly dispersed, and stirring and cooling can be achieved faster; if the temperature at a certain place is reduced, by moving the inner side wall of the first container 210 and the second container 270 at the corresponding height of the position outward and the outer side wall inward, the cross-sectional area of ​​the heat transfer medium at the position is reduced, the flow rate of the heat transfer medium at the position is increased, and the heat absorption is reduced. At this time, the gap between the side wall of the first container 210 and the second container 270 at the position and the inner wall of the reaction tube 100 increases, and the stirring effect of the first container 210 and the second container 270 on the preparation of raw materials at the position is weakened. The rotation speed of the material at this position is reduced relative to other positions, and the heat of other parts can quickly move to this position, and stirring and heating can be achieved faster. Through the above, the present invention can absorb heat while regulating the temperature inside the reaction tube 100, so that the temperature inside the reaction tube 100 is more balanced, which is conducive to the normal progress of the preparation reaction.

[0037] In a further embodiment, Figure 4 As shown, the adjustment assembly includes a plurality of adjustment parts evenly spaced up and down, and each adjustment part includes an inner ring, an outer ring, an inner pull rope 252, an outer pull rope 242 and a driving structure.

[0038] The inner ring and the outer ring are coaxially arranged and the inner ring is located on the inner side of the first container 210 and the second container 270, and the outer ring is located on the outer side of the first container 210 and the second container 270; the inner ring includes an inner fixed ring 260 and an inner movable ring 250, and the outer ring includes an outer fixed ring 230 and an outer movable ring 240. A vertical column 220 is arranged on the connecting structure, and the inner fixed ring 260 and the outer fixed ring 230 are both connected to the vertical column 220. The inner movable ring 250 is rotatably arranged on the inner peripheral wall of the inner fixed ring 260, and the outer movable ring 240 is rotatably arranged on the outer peripheral wall of the outer fixed ring 230.

[0039] An inner positioning spring 261 is connected between the inner wall of the first container 210 and the second container 270 and the inner fixed ring 260, and an outer positioning spring 231 is connected between the outer wall of the first container 210 and the second container 270 and the outer fixed ring 230. There are multiple inner positioning springs 261 and outer positioning springs 231 evenly distributed along the circumferential direction.

[0040] One end of the inner pull rope 252 is connected to the inner movable ring 250, and the other end passes through the corresponding inner positioning spring 261 and is connected to the inner wall of the first container 210 or the second container 270; one end of the outer pull rope 242 is connected to the outer movable ring 240, and the other end passes through the corresponding outer positioning spring 231 and is connected to the outer wall of the first container 210 or the second container 270; the inner movable ring 250 and the outer movable ring 240 are configured to drive the inner side walls of the first container 210 and the second container 270 to move inward and the outer side walls to move outward through the inner pull rope 252 and the outer pull rope 242 when they rotate around the first direction, and to drive the inner side walls of the first container 210 and the second container 270 to move outward and the outer side walls to move inward through the inner pull rope 252 and the outer pull rope 242 when they rotate around the second direction.

[0041] The driving structure is configured to drive the inner moving ring 250 or the outer moving ring 240 at the corresponding position to rotate around a first direction when the temperature at a certain position in the reaction tube 100 increases, and to drive the inner moving ring 250 or the outer moving ring 240 at the corresponding position to rotate around a second direction when the temperature at a certain position in the reaction tube 100 decreases.

[0042] In a further embodiment, the driving structure includes an inner telescopic cylinder and an outer telescopic cylinder, one end of the inner telescopic cylinder is connected to the inner fixed ring 260 and the other end is connected to the inner movable ring 250; one end of the outer telescopic cylinder is connected to the outer fixed ring 230 and the other end is connected to the outer movable ring 240, and the inner telescopic cylinder and the outer telescopic cylinder are filled with a temperature-sensitive medium. To ensure force balance, multiple inner telescopic cylinders and outer telescopic cylinders can be provided along the circumferential direction. In the present invention, preferably, two inner telescopic cylinders and two outer telescopic cylinders are provided.

[0043] Specifically, Figure 5 As shown, the inner telescopic cylinder includes an inner telescopic column 253 and an inner telescopic cylinder 262, wherein the inner telescopic cylinder 262 is connected to the inner fixed ring 260, and the inner telescopic column 253 is connected to the inner movable ring 250, and the inner telescopic column 253 is located in front of the inner telescopic cylinder 262 along the first direction. The outer telescopic cylinder includes an outer telescopic column 243 and an outer telescopic cylinder 232, wherein the outer telescopic cylinder 232 is connected to the outer fixed ring 230, and the outer telescopic column 243 is connected to the outer movable ring 240, and the outer telescopic column 243 is located in front of the outer telescopic cylinder 232 along the first direction. Figure 7 , 8As shown, an inner reserved groove 251 is provided on the inner movable ring 250, and the front end of the inner pull rope 252 along the first direction is located inside the inner reserved groove 251 and connected to the inner movable ring 250; an outer reserved groove 241 is provided on the outer movable ring 240, and the front end of the outer pull rope 242 along the first direction is located inside the outer reserved groove 241 and connected to the outer movable ring 240.

[0044] Continue to refer to Figure 5 , 7 8. When the local temperature inside the reaction tube 100 rises, the inner telescopic cylinder and the outer telescopic cylinder extend, and the inner telescopic column 253 and the outer telescopic column 243 drive the inner movable ring 250 and the outer movable ring 240 to rotate counterclockwise (corresponding to the above-mentioned first direction). When the inner movable ring 250 rotates counterclockwise, the inner side wall of the first container 210 or the second container 270 is pulled inward through the inner pull rope 252. When the outer movable ring 240 rotates counterclockwise, the outer side wall of the first container 210 or the second container 270 is pulled outward through the outer pull rope 242, thereby increasing the cross-sectional area of ​​the first container 210 or the second container 270 at this location.

[0045] When the local temperature inside the reaction cylinder 100 decreases, the inner telescopic cylinder and the outer telescopic cylinder are shortened, and the inner telescopic column 253 and the outer telescopic column 243 drive the inner movable ring 250 and the outer movable ring 240 to rotate in a clockwise direction (corresponding to the above-mentioned second direction). When the inner movable ring 250 rotates clockwise, the inner pull rope 252 is relaxed, and the inner positioning spring 261 pushes the inner side wall of the first container 210 or the second container 270 outward. When the outer movable ring 240 rotates clockwise, the outer pull rope 242 is relaxed, and the outer positioning spring 231 pushes the outer side wall of the first container 210 or the second container 270 inward, thereby reducing the cross-sectional area of ​​the first container 210 or the second container 270 at this location.

[0046] In a further embodiment, Figure 2 As shown, the inner cylinder wall 130 is provided with an inner cylinder spiral piece 120, and the outer cylinder wall 140 is provided with an outer cylinder spiral piece 110. The inner cylinder spiral piece 120 and the outer cylinder spiral piece 110 are located in the accommodating cavity of the reaction cylinder 100 and have opposite spiral directions. There is a gap between the first container 210 and the second container 270 and the bottom of the reaction cylinder 100. During the preparation of the cyclohexane plasticizer, the reaction cylinder 100 rotates and stirs the prepared raw materials through the inner cylinder spiral piece 120 and the outer cylinder spiral piece 110. In the stirring process, the prepared raw materials can not only be circumferentially rotated, but also be circumferentially rotated up and down, thereby improving the uniformity of stirring.

[0047] In a further embodiment, in the initial state, the cross-sections of the side walls of the first container 210 and the second container 270 are wavy in shape to increase the stirring effect on the prepared raw materials.

[0048] In a further embodiment, the structure of the purification cylinder is the same as that of the reaction cylinder 100, and a temperature control mechanism is provided inside the purification cylinder. The temperature control mechanism includes the first container 210, the second container 270, the inner ring, the outer ring, the outer positioning spring 231, the outer telescopic cylinder, the inner telescopic cylinder, the outer reserved groove 241, the outer pull rope 242, the inner reserved groove 251, the inner pull rope 252, the inner positioning spring 261 and other basic structural features in the above-mentioned temperature control mechanism 200, and the temperature control mechanism The difference between the structure and the temperature control mechanism 200 is that the rear end of the inner pull rope 252 of the temperature control mechanism along the first direction is located in the inner reserved groove 251 and connected to the inner moving ring 250; the rear end of the outer pull rope 242 of the temperature control mechanism along the first direction is located in the outer reserved groove 241 and connected to the outer moving ring 240, the medium outlet 271 of the temperature control mechanism 200 is connected to the medium inlet 211 of the temperature control mechanism, and the medium outlet 271 of the temperature control mechanism is connected to the medium inlet 211 of the temperature control mechanism 200.

[0049] That is, in the temperature control mechanism, when the inner movable ring 250 and the outer movable ring 240 rotate around the first direction, the inner side walls of the first container 210 and the second container 270 are driven to move outward and the outer side walls are driven inward by the inner pull rope 252 and the outer pull rope 242; when the inner movable ring 250 and the outer movable ring 240 rotate around the second direction, the inner side walls of the first container 210 and the second container 270 are driven to move inward and the outer side walls are driven outward by the inner pull rope 252 and the outer pull rope 242. A further explanation is that when the temperature at a certain local position inside the purification cylinder rises, the cross-sectional area of ​​the first container 210 and the second container 270 at that position is reduced, and the medium flows faster at this position, thereby preventing the heat transfer medium from transferring too much heat to the inside of the purification cylinder; when the temperature at a certain local position inside the purification cylinder decreases, the cross-sectional area of ​​the first container 210 and the second container 270 at that position is increased, and the medium flows slower at this position, thereby increasing the heat transfer, thereby making the temperature inside the purification cylinder more balanced.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for secondary utilization of waste heat in the production of cyclohexane plasticizers, characterized by: The invention comprises a rotatable reaction cylinder, the reaction cylinder comprises an inner cylinder wall and an outer cylinder wall, the cross-section of the inner cylinder wall and the outer cylinder wall are circular and the lower ends are connected so that the reaction cylinder forms an annular containing cavity, and the prepared raw materials are put into the containing cavity; A temperature control mechanism is arranged inside the accommodating chamber, and the temperature control mechanism includes a first accommodating member, a second accommodating member and an adjusting assembly; the first accommodating member and the second accommodating member are arranged symmetrically about the radial line of the reaction cylinder and both ends of the lower parts thereof are connected through a connecting structure, a medium inlet is arranged on the first accommodating member, and a medium outlet is arranged on the second accommodating member, and heat transfer medium is filled in the first accommodating member and the second accommodating member, and the first accommodating member and the second accommodating member extend in an arc shape and can be deformed under the action of an external force; The adjusting component is in driving connection with the first container and the second container. The adjusting component is configured to make the inner side walls of the first container and the second container move inwards and the outer side walls move outwards at the corresponding height of a certain position in the reaction cylinder when the temperature of the position increases. When the temperature at a certain position in the reaction tube decreases, the inner side walls of the first container and the second container move outwards and the outer side walls move inwards at a height corresponding to the position; The adjustment assembly includes a plurality of adjustment parts evenly spaced up and down, each adjustment part includes an inner ring, an outer ring, an inner pull rope, an outer pull rope and a driving structure; the inner ring and the outer ring are coaxially arranged, and the inner ring is located on the inner side of the first container and the second container, and the outer ring is located on the outer side of the first container and the second container; the inner ring includes an inner fixed ring and an inner movable ring, and the outer ring includes an outer fixed ring and an outer movable ring. A vertical column is arranged on the connecting structure, and the inner fixed ring and the outer fixed ring are both connected to the vertical column. The inner movable ring is rotatably arranged on the inner peripheral wall of the inner fixed ring, and the outer movable ring is rotatably arranged on the outer peripheral wall of the outer fixed ring; An inner positioning spring is connected between the inner side walls of the first and second accommodating parts and the inner fixed ring, and an outer positioning spring is connected between the outer side walls of the first and second accommodating parts and the outer fixed ring; One end of the inner pull rope is connected to the inner moving ring, and the other end passes through the inner positioning spring and is connected to the inner side wall of the first accommodating part or the second accommodating part; One end of the outer pull rope is connected to the outer movable ring, and the other end passes through the outer positioning spring and is connected to the outer side wall of the first container or the second container; the inner movable ring and the outer movable ring are configured to drive the inner side walls of the first container and the second container to move inward and the outer side walls to move outward when the inner pull rope and the outer pull rope are rotated around the first direction, and to drive the inner side walls of the first container and the second container to move outward and the outer side walls to move inward when the inner pull rope and the outer pull rope are rotated around the second direction; The driving structure is configured to drive the inner moving ring or outer moving ring at a corresponding position to rotate in a first direction when the temperature at a certain position in the reaction cylinder increases, and to drive the inner moving ring or outer moving ring at the corresponding position to rotate in a second direction when the temperature at a certain position in the reaction cylinder decreases.

2. The device for secondary utilization of waste heat in the production of cyclohexane plasticizers according to claim 1, characterized in that: An inner reserved groove is provided on the inner moving ring, and the front end of the inner pull rope along the first direction is located inside the inner reserved groove and connected to the inner moving ring; an outer reserved groove is provided on the outer moving ring, and the front end of the outer pull rope along the first direction is located inside the outer reserved groove and connected to the outer moving ring.

3. The device for secondary utilization of waste heat in the production of cyclohexane plasticizers according to claim 1, characterized in that: The driving structure includes an inner telescopic cylinder and an outer telescopic cylinder. One end of the inner telescopic cylinder is connected to the inner fixed ring and the other end is connected to the inner moving ring; one end of the outer telescopic cylinder is connected to the outer fixed ring and the other end is connected to the outer moving ring. The inner and outer telescopic cylinders are filled with temperature-sensitive media.

4. The device for secondary utilization of waste heat in the production of cyclohexane plasticizers according to claim 3, characterized in that: The inner telescopic cylinder includes an inner telescopic column and an inner telescopic cylinder, the inner telescopic cylinder is connected to an inner fixed ring, the inner telescopic column is connected to an inner movable ring, and the inner telescopic column is located in front of the inner telescopic cylinder along a first direction; the outer telescopic cylinder includes an outer telescopic column and an outer telescopic cylinder, the outer telescopic cylinder is connected to an outer fixed ring, the outer telescopic column is connected to an outer movable ring, and the outer telescopic column is located in front of the outer telescopic cylinder along the first direction.

5. The device for secondary utilization of waste heat in the production of cyclohexane plasticizers according to claim 1, characterized in that: The inner cylinder wall is provided with an inner cylinder spiral sheet, and the outer cylinder wall is provided with an outer cylinder spiral sheet. The inner cylinder spiral sheet and the outer cylinder spiral sheet are located in the accommodating cavity of the reaction cylinder and have opposite spiral directions. There is a gap between the first accommodating part and the second accommodating part and the bottom of the reaction cylinder.

6. The device for secondary utilization of waste heat in the production of cyclohexane plasticizers according to claim 1, characterized in that: In the initial state, the cross sections of the side walls of the first accommodating part and the second accommodating part are wavy.

7. The device for secondary utilization of waste heat in the production of cyclohexane plasticizers according to claim 1, characterized in that: A plurality of inner positioning springs and outer positioning springs are provided and are evenly distributed along the circumferential direction.

8. The device for secondary utilization of waste heat in the production of cyclohexane plasticizers according to claim 3, characterized in that: Two inner telescopic cylinders and two outer telescopic cylinders are evenly arranged along the circumferential direction.

9. The device for secondary utilization of waste heat in the production of cyclohexane plasticizers according to any one of claims 1 to 8, characterized in that: It also includes a purification cylinder, which has the same structure as that of the reaction cylinder. A temperature control mechanism is provided inside the purification cylinder, and the temperature control mechanism includes the first container and the second container. The heat transfer medium inside the first container and the second container of the temperature control mechanism and the heat transfer medium inside the first container and the second container of the temperature control mechanism circulate. The temperature control mechanism is configured to reduce the cross-sectional area of ​​the first container and the second container at a certain position inside the purification cylinder when the temperature increases at that position, and to increase the cross-sectional area of ​​the first container and the second container at that position when the temperature decreases at that position.

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