Energy recycling device for rectifying tower

Abstract

The utility model discloses an energy recycling device for a rectifying tower. The energy recycling device comprises the rectifying tower, a primary heat-conducting oil condenser and a secondary heat-conducting oil condenser, wherein the primary heat-conducting oil condenser and the secondary heat-conducting oil condenser are used for cooling the tower top discharge temperature of the rectifying tower. According to the utility model, two-stage cooling can be carried out on materials at the top of the rectifying tower, the cooled heat-conducting oil with higher temperature can also be used for heating the materials entering the tower, and redundant heat can also be used on other heating equipment, so that the redundant heat can be reused, and the cost is saved; the connection mode of a conventional heat exchange interface is changed, so that the connection between the heat exchange interface main body and the mounting seat on the heating equipment is very convenient, the connection and replacement can be realized only by forward and backward rotation operation of the screw rod through the knob, and people can conveniently and quickly connect and switch different heating equipment; in addition, the heat exchanger is simple in structure and convenient to connect and use.

Description

Technical Field

[0001] The utility model relates to the technical field of energy recovery and utilization devices, in particular to an energy recovery and utilization device for a distillation tower. Background Art

[0002] Distillation towers are crucial equipment in chemical production, with energy consumption primarily concentrated in the tower's bottom reboiler and preheating incoming materials. Consequently, there's waste in heat exchange with the overhead condenser and in the energy carried away by the overhead and bottom discharges. For example, our company's benzaldehyde distillation tower processes 400 tons of material daily, consuming 10,000 cubic meters of natural gas. Previously, the overhead temperature reached 160°C, and circulating water was used for cooling, resulting in wasted energy. This high energy consumption is particularly pronounced during high-temperature distillation processes, increasing production costs. Currently, through technological improvements, we've developed an energy recovery device for distillation towers. This involves cooling the overhead material in two stages. In the first stage, the higher temperature heat transfer oil is used to heat the incoming material, while the excess heat is used for other heating equipment. After a period of trial operation, we've been able to reuse more than half of the natural gas energy, saving 5,000 cubic meters of natural gas per day, or approximately 20,000 yuan.

[0003] At present, there is a method of using the heat from the top discharge condenser of a distillation tower for preheating materials and heating some workshop equipment. However, in the existing distillation tower energy recovery and utilization device technology, when transferring excess heat to other equipment that needs to be heated, the connection method of its traditional heat exchange interface is relatively complicated, making the disassembly and assembly process more troublesome, and not convenient for rapid disassembly and switching between different equipment, which limits the flexible distribution and utilization of heat. Therefore, there is an urgent need for a heat exchange interface that can be easily and quickly disassembled and assembled to achieve efficient transfer of excess heat from thermal oil to different heating equipment in the workshop; to this end, the utility model proposes an energy recovery and utilization device for distillation towers. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an energy recovery and utilization device for a distillation tower.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for recovering and utilizing energy from a distillation tower comprises a distillation tower, and a primary and secondary thermal oil condenser for cooling the temperature of discharge material from the top of the distillation tower. The waste heat from the primary and secondary thermal oil condensers is also used to heat incoming material to the distillation tower and a heating device. The primary and secondary thermal oil condensers are connected to the distillation tower and the heating device, respectively, via pipelines.

[0007] One end of the pipeline connected to the first-level heat-conducting oil condenser and the second-level heat-conducting oil condenser is fixedly provided with a heat exchange interface body, a mounting base is fixedly provided on the heating device, a heat conducting pipe is fixedly sleeved on the mounting base, a plug-in groove is provided on the mounting base located above the heat conducting pipe, and the heat conducting oil pipe joint is plugged into the plug-in groove, and the bottom of the heat exchange interface body is fixedly connected with a heat conducting oil pipe joint, and the heat conducting oil pipe joint and the heat conducting pipe are in sealing contact, and the bottom end of the heat conducting pipe also extends into the heating device; both sides of the heat conducting oil pipe joint are fixedly connected with an inclined trapezoidal block, and grooves are provided on the inner walls of both sides of the plug-in groove, and a threaded pipe is movably provided in the groove, and the right end of the threaded pipe is fixedly connected with a conical head, and the right end of the conical head movably extends into the groove and slides against the inclined surface of the inclined trapezoidal block; the left end of the threaded pipe is threadedly connected with a screw, and the left end of the screw rotates through the outside of the mounting seat and is fixedly connected with a knob.

[0008] Furthermore, the bottom end of the thermal oil pipe joint is provided with an annular portion, the bottom side of the annular portion is provided with a sealing ring, and the annular portion at the bottom of the thermal oil pipe joint is in sealing contact with the top end of the heat pipe through the sealing ring.

[0009] Furthermore, a slider is fixedly provided on the threaded tube in the groove, and sliding grooves are symmetrically provided on the inner wall of the groove, and the slider is slidably provided in the sliding grooves.

[0010] Furthermore, a bearing is provided on the left inner wall of the groove, and the screw is rotatably mounted on the bearing.

[0011] Furthermore, a plurality of anti-slip strips are evenly arranged on the circumference of the knob.

[0012] Furthermore, the mounting seat is provided with a sleeve groove, and the heat conducting pipe is fixedly sleeved in the sleeve groove.

[0013] With the above structure, the beneficial effects achieved by the utility model are as follows:

[0014] In the present invention, not only can the top material of the distillation tower be cooled in two stages, but the heat-conducting oil with a higher temperature after cooling can also be used to heat the material entering the tower, and its excess heat can also be used on other heating equipment, which is conducive to the reuse of excess heat and greatly saves costs; and it changes the previous connection method of the heat exchange interface, making the connection between the heat exchange interface body and the mounting seat on the heating equipment very convenient, and only needs to be connected and replaced by rotating the screw forward and reversely by the knob; in this way, when it is necessary to transfer excess heat to other heating equipment, the connection between the heat exchange interface body and the mounting seat on the heating equipment is very convenient, which is convenient for people to quickly connect and switch between different heating equipment, thereby facilitating the flexible distribution and utilization of excess heat, and the structure is simple and easy to connect and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a device for recovering and utilizing energy from a distillation tower proposed in the present invention;

[0016] Figure 2 For this utility model Figure 1 A schematic diagram of the structure of the enlarged part A;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the structure of the enlarged portion B;

[0018] Figure 4 This is a schematic diagram of the structure between the heat transfer oil pipe joint, the annular part, and the sealing ring in the utility model.

[0019] In the figure: 1. Distillation tower; 2. First-stage thermal oil condenser; 3. Second-stage thermal oil condenser; 4. Heating device; 401. Heat pipe; 402. Connecting slot; 5. Mounting seat; 6. Heat exchange interface body; 601. Thermal oil pipe joint; 602. Ring-shaped part; 603. Sealing ring; 604. Oblique trapezoidal block; 7. Knob; 8. Screw; 9. Threaded pipe; 10. Conical head; 11. Groove; 12. Bearing; 13. Slider. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-4 A device for recovering and utilizing energy from a distillation tower comprises a distillation tower 1, and a primary heat-conducting oil condenser 2 and a secondary heat-conducting oil condenser 3 for cooling the top discharge temperature of the distillation tower 1. The waste heat of the primary heat-conducting oil condenser 2 and the secondary heat-conducting oil condenser 3 is also used to heat the incoming materials of the distillation tower 1 and a heating device 4. The primary heat-conducting oil condenser 2 and the secondary heat-conducting oil condenser 3 are connected to the distillation tower 1 and the heating device 4 respectively through pipelines.

[0022] like Figure 2-3One end of the pipe connecting the first-stage thermal oil condenser 2 and the second-stage thermal oil condenser 3 is fixedly provided with a heat exchange interface body 6, a mounting base 5 is fixedly provided on the heating device 4, a heat pipe 401 is fixedly sleeved on the mounting base 5, a plug-in groove 402 is provided on the mounting base 5 above the heat pipe 401, and a heat pipe joint 601 is inserted into the plug-in groove 402, a heat pipe joint 601 is fixedly connected to the bottom of the heat exchange interface body 6, and the heat pipe joint 601 is in sealing contact with the heat pipe 401, and the heat pipe The bottom end of 401 also extends into the heating device 4; both sides of the thermal oil pipe joint 601 are fixedly connected with the inclined trapezoidal block 604, and the inner walls on both sides of the plug-in slot 402 are provided with grooves 11, and a threaded tube 9 is movably provided in the groove 11, and the right end of the threaded tube 9 is fixedly connected with a conical head 10, and the right end of the conical head 10 is movably extended into the groove 11 and slidably contacts with the inclined surface of the inclined trapezoidal block 604; the left end of the threaded tube 9 is threadedly connected with a screw 8, and the left end of the screw 8 rotates and passes through the outside of the mounting seat 5 and is fixedly connected with a knob 7.

[0023] In this embodiment, a ring-shaped portion 602 is provided at the bottom end of the thermal oil pipe joint 601, and a sealing ring 603 is provided on the bottom side of the ring-shaped portion 602. The ring-shaped portion 602 at the bottom of the thermal oil pipe joint 601 is in sealing contact with the top end of the heat pipe 401 through the sealing ring 603.

[0024] In this embodiment, a slider 13 is fixedly provided on the threaded tube 9 located in the groove 11, and a slide groove is symmetrically provided on the inner wall of the groove 11, and the slider 13 is slidably provided in the slide groove; a bearing 12 is provided on the left inner wall of the groove 11, and the screw 8 is rotatably installed on the bearing 12.

[0025] Among them, a plurality of anti-slip strips are evenly arranged on the circumference of the knob 7; a sleeve groove is provided on the mounting base 5, and the heat pipe 401 is fixedly sleeved in the sleeve groove.

[0026] like Figure 1-4The device shown is for recovering and utilizing energy from a distillation tower. The top material of the distillation tower 1 is cooled in two stages using a primary thermal oil condenser 2 and a secondary thermal oil condenser 3. After cooling, the thermal oil absorbs heat, and the higher temperature thermal oil is used to heat the incoming material. The excess heat is used in other heating equipment 4, which is conducive to the reuse of excess heat and greatly saves costs. Moreover, the present invention changes the conventional connection mode of the heat exchange interface when transferring excess heat to other devices 4 that need to be heated, making the connection between the heat exchange interface body 6 and the mounting base 5 on the heating device 4 very convenient, that is, when a connection replacement is required, the screw rod 8 is rotated by the knob 7, so that the threaded tube 9 can be threaded to the left or right on the screw rod 8. When the two threaded tubes 9 are moved away from each other, the two conical heads 10 can be driven away from each other. When the conical heads 10 are moved into the groove 11, the heat transfer oil pipe joint 601, the annular portion 602 and the sealing ring 603 at the bottom of the heat exchange interface body 6 can be taken out upward from the plug-in groove 402 for disassembly; then the heat exchange interface body can be reassembled. When the heat exchange interface body 6 is replaced with the heating device 4 to be connected, the heat transfer oil pipe joint 601, the annular portion 602, and the sealing ring 603 at the bottom of the heat exchange interface body 6 are simultaneously inserted into the insertion groove 402 where the mounting seat 5 on the heating device 4 is located. Then, the screw 8 is rotated in the opposite direction by the knob 7. The screw 8 and the threaded tube 9 are threadedly driven, and the two threaded tubes 9 and the tapered head 10 are brought closer to each other, so that the tapered head 10 contacts the inclined top surface of the inclined trapezoidal block 604. This allows the sealing ring 603 at the bottom of the heat transfer oil pipe joint 601 to contact and tightly contact the heat transfer pipe 401, thereby quickly and securely mounting the heat exchange interface body 6 on the mounting seat 5 of the heating device 4. In this way, when it is necessary to transfer excess heat to other heating devices, the connection between the heat exchange interface body 6 and the mounting seat 5 on the heating device 4 is very convenient, making it convenient for people to quickly connect and switch between different heating devices, thereby facilitating the flexible distribution and utilization of excess heat and improving the speed of the connection process.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for recovering and utilizing energy from a distillation tower, comprising a distillation tower (1), and a primary heat-conducting oil condenser (2) and a secondary heat-conducting oil condenser (3) for cooling the top discharge temperature of the distillation tower (1), wherein the waste heat of the primary heat-conducting oil condenser (2) and the secondary heat-conducting oil condenser (3) is also used to heat the materials entering the distillation tower (1) and the heating device (4); characterized in that: The first-stage heat-conducting oil condenser (2) and the second-stage heat-conducting oil condenser (3) are respectively connected to the distillation tower (1) and the temperature-raising device (4) through pipelines; A heat exchange interface body (6) is fixedly provided at one end of the pipe connected to the first-stage heat-conducting oil condenser (2) and the second-stage heat-conducting oil condenser (3); a mounting seat (5) is fixedly provided on the heating device (4); a heat-conducting pipe (401) is fixedly sleeved on the mounting seat (5); a plug-in slot (402) is provided on the mounting seat (5) above the heat-conducting pipe (401); a heat-conducting oil pipe joint (601) is plugged into the plug-in slot (402); a heat-conducting oil pipe joint (601) is fixedly connected to the bottom of the heat exchange interface body (6); and the heat-conducting oil pipe joint (601) and the heat-conducting oil pipe joint (601) are in sealing contact with each other, and the heat-conducting pipe (401) is in sealing contact with each other. 01) also extends into the heating device (4); both sides of the heat transfer oil pipe joint (601) are fixedly connected to the inclined trapezoidal block (604), and the inner walls of both sides of the plug-in slot (402) are provided with grooves (11), and a threaded tube (9) is movably provided in the groove (11), and the right end of the threaded tube (9) is fixedly connected to the conical head (10), and the right end of the conical head (10) is movably extended into the groove (11) and is in sliding contact with the inclined surface of the inclined trapezoidal block (604); the left end of the threaded tube (9) is threadedly connected to the screw rod (8), and the left end of the screw rod (8) rotates and passes through the outside of the mounting seat (5) and is fixedly connected to the knob (7).

2. The device for recovering and utilizing energy from a distillation tower according to claim 1, wherein: The bottom end of the heat transfer oil pipe joint (601) is provided with an annular portion (602), the bottom side of the annular portion (602) is provided with a sealing ring (603), and the annular portion (602) at the bottom of the heat transfer oil pipe joint (601) is in sealing contact with the top end of the heat transfer pipe (401) through the sealing ring (603).

3. The device for recovering and utilizing energy from a distillation tower according to claim 1, characterized in that: A slider (13) is fixedly provided on the threaded tube (9) in the groove (11), and a sliding groove is symmetrically provided on the inner wall of the groove (11), and the slider (13) is slidably provided in the sliding groove.

4. The device for recovering and utilizing energy from a distillation tower according to claim 1, wherein: A bearing (12) is provided on the left inner wall of the groove (11), and the screw (8) is rotatably mounted on the bearing (12).

5. The device for recovering and utilizing energy from a distillation tower according to claim 1, characterized in that: A plurality of anti-slip strips are evenly arranged on the circumference of the knob (7).

6. The device for recovering and utilizing energy from a distillation tower according to claim 1, characterized in that: The mounting seat (5) is provided with a sleeve groove, and the heat conducting pipe (401) is fixedly sleeved in the sleeve groove.

Images