A heating evaporation device based on inorganic thermal superconducting technology

Abstract

The invention discloses a heating evaporation device based on inorganic thermal superconducting technology, which includes a heat medium heating part and an electric heating part connected together; the heat medium heating part includes a feed part and a first heat exchange part connected to each other; a material inlet pipe is arranged on the feed part; a first upper tube sheet, a first lower tube sheet and a first heat exchange tube array installed on the first upper tube sheet and the first lower tube sheet, as well as a first heat medium inlet pipe and a first heat medium outlet pipe are installed in the second cylinder of the first heat exchange part; the electric heating part includes a heating chamber and a wiring chamber, and the upper end and the lower end of the inorganic thermal superconducting tube are respectively extended into the heating chamber and the wiring chamber; a material outlet pipe connected to the heating chamber is installed on the electric heating part; the two ends of the first heat exchange tube array are respectively connected to the inner chamber of the first shell and the heating chamber. By adopting the present application, the reaction heat generated by the reactor can be gradually conducted to the heat transfer medium without causing waste, and 100% thermal coupling can be achieved in the reaction process.

Description

Technical Field

[0001] The invention relates to a heating evaporation device based on inorganic thermal superconducting technology. Background Art

[0002] In order to improve the efficiency of secondary utilization of thermal energy, various companies pay more and more attention to thermal coupling technology in the production process, especially the recovery and utilization of heat energy generated in the chemical reaction process. However, the heat energy generated during the reaction can only be utilized during normal operation. In the early stage of operation, since the heat transfer medium used to transfer heat energy is still in a cold state, thermal coupling cannot be performed. External heating is required to heat the raw materials until the operation is normal.

[0003] In order to reduce the use of external energy, companies usually have at least two sets of equipment. When starting production, they start one of the equipment first, using external energy to heat the raw materials until it is running normally, and then use the equipment that has been started to gradually start the other equipment. This equipment configuration method is relatively feasible for production companies that need to be equipped with multiple sets of equipment, but for companies that only need a single device to meet production needs, it not only increases the purchase cost of the equipment, but also increases the operating cost of the equipment, and cannot effectively improve the thermal coupling efficiency in the reaction process. Even for companies that need to be equipped with multiple sets of equipment, there is still the problem of being unable to improve the thermal coupling efficiency.

[0004] In order to utilize the reaction heat, a preheater is required. The preheater is used to exchange the reaction heat with the raw materials. In order to start the machine smoothly, an additional external heater is generally required. When starting the machine, the heat transfer medium needs to first enter the external heater for heating. The heated heat transfer medium enters the preheater to exchange heat with the raw materials. The heat transfer medium needs to undergo two heat exchanges to complete the heating of the raw materials, resulting in a large loss in heating efficiency and thermal energy efficiency. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a heating evaporation device, by which the thermal coupling efficiency of the heat energy generated by the reactor can be effectively improved, so that the normal production state can be quickly reached during the start-up process. The specific technical solution is as follows:

[0006] A heating evaporation device based on inorganic thermal superconducting technology, comprising a thermal working medium heating part and an electric heating part connected together;

[0007] The heat medium heating part comprises a feed part and a first heat exchange part which are sequentially connected from top to bottom, and the electric heating part is located at the lower side of the first heat exchange part and connected to the first heat exchange part;

[0008] The feed part comprises a first shell extending in a vertical direction, the first shell comprises a first cylinder and a sealing head installed at the upper end of the first cylinder, and the lower end of the first cylinder is open; a material inlet pipe is arranged on the first shell;

[0009] The first heat exchange part includes a second cylinder extending in the vertical direction, a first upper tube sheet is installed at the upper end of the second cylinder, a first lower tube sheet is installed at the lower end of the second cylinder, a plurality of first heat exchange tubes are installed on the first upper tube sheet and the first lower tube sheet, and penetrate the first upper tube sheet and the first lower tube sheet; a first heat medium inlet pipe and a first heat medium outlet pipe connected to the inner cavity of the second cylinder are installed on the second cylinder;

[0010] The electric heating part is located at the lower side of the hot medium heating part, and the electric heating part includes a fifth cylinder extending in the vertical direction, the upper end of the fifth cylinder is open, and the lower end of the fifth cylinder is closed; a partition is installed in the fifth cylinder, and the inorganic thermal superconducting tube extends in the vertical direction and is sealed on the partition, and the partition divides the inner cavity of the fifth cylinder into a heating cavity and a wiring cavity; the upper end of the inorganic thermal superconducting tube extends into the heating cavity, and the lower end of the inorganic thermal superconducting tube extends into the wiring cavity; a power box and a material outlet pipe are installed on the fifth cylinder, the material outlet pipe is connected to the heating cavity, and the wire of the inorganic thermal superconducting tube extends out of the wiring cavity and is connected to the power box;

[0011] The first cylinder, the second cylinder and the fifth cylinder are coaxially arranged;

[0012] The lower end of the first cylinder is sealed and connected to the upper end of the second cylinder, and the lower end of the second cylinder is sealed and connected to the upper end of the fifth cylinder;

[0013] The upper ends of the first heat exchange tubes are connected to the inner cavity of the first shell, and the lower ends of the first heat exchange tubes are connected to the heating cavity.

[0014] The inorganic thermal superconducting tube is a mature heating tube in the prior art, which specifically includes an inorganic thermal superconducting heat transfer tube and an electric heating tube and a lead wire protection tube arranged in the inorganic thermal superconducting heat transfer tube. The cavity between the electric heating tube and the inorganic thermal superconducting heat transfer tube and between the lead wire protection tube and the inorganic thermal superconducting heat transfer tube is filled with an inorganic thermal superconducting working medium.

[0015] When the present application is in operation, the first heat medium inlet pipe is used to connect to the heat medium outlet of the reactor; the first heat medium outlet pipe is used to connect to the heat medium inlet of the reactor; and the material outlet pipe is used to connect to the raw material inlet of the reactor.

[0016] When the heating evaporation device is started, the raw material enters the first shell through the material inlet pipe, then enters the heating chamber after passing through the first heat exchange tube, is heated to the first set temperature, and then enters the reactor for reaction after being discharged through the material inlet pipe; when the raw material passes through the heating chamber, the inorganic thermal superconducting tube heats the raw material.

[0017] After the heat transfer medium is discharged from the hot medium outlet of the reactor, it enters the inner cavity of the second cylinder through the first heat medium inlet pipe, and heats the raw materials flowing through the first heat exchange tubes through the first heat exchange tubes. As the reaction in the reactor proceeds, the temperature of the heat transfer medium continues to rise, and the heating power of the inorganic thermal superconducting tube is reduced synchronously. When the temperature of the heat transfer medium reaches the second set temperature, the heating of the inorganic thermal superconducting tube is stopped, and normal production is entered.

[0018] In the present application, the heat medium heating part is used as the heat exchange area between the heat transfer medium and the raw material, and the electric heating part is used as the raw material heating area during startup. In the electric heating area, inorganic thermal superconducting tubes are used to directly heat the raw material. In the prior art, the heat transfer medium needs to be heated by an external heat exchanger before exchanging heat with the raw material, which reduces the heat exchange efficiency. In the present application, inorganic thermal superconducting tubes are used to directly heat the raw material, with almost no heat energy loss. In the process of heating the raw material with inorganic thermal superconducting tubes, the heat energy generated by the reactor is continuously conducted to the heat transfer medium, and the temperature of the heat transfer medium is continuously increased until the set temperature is reached. At this time, the heating of the raw material by the inorganic thermal superconducting tube can be stopped, and the heat energy generated by the reactor can be completely used to heat the raw material. Since the reaction heat generated by the reactor is gradually conducted to the heat transfer medium from the start of startup, no waste will be caused, and 100% thermal coupling can be achieved in the reaction process.

[0019] Since inorganic thermal superconducting tubes are used to heat the raw materials during start-up, the reaction of the reactor can quickly reach a normal reaction state. After adopting the present application, the time for the reaction in the reactor to reach normal operation is 1-2 hours, while when the prior art is used, the time for the reaction in the reactor to reach normal operation is 24-28 hours, which can save 23-27 hours. Moreover, after adopting the present application, 100% of the thermal coupling can be completed by using a single reactor. For some enterprises that only need a single reactor to meet production needs, the equipment purchase cost and enclosure cost can be effectively reduced, thereby reducing the manufacturing cost of the product.

[0020] The use of inorganic thermal superconductors to heat the raw materials can ensure that the electric heating device does not come into contact with the raw materials, thus ensuring the safe operation of the equipment and production.

[0021] Furthermore, the thermal medium heating part further includes a second heat exchange part, and the second heat exchange part is located between the first heat exchange part and the electric heating part;

[0022] The second heat exchange part includes a fourth cylinder extending in the vertical direction, a second upper tube sheet is installed at the upper end of the fourth cylinder, a second lower tube sheet is installed at the lower end of the fourth cylinder, a plurality of second heat exchange tubes are installed on the second upper tube sheet and the second lower tube sheet, and penetrate the second upper tube sheet and the second lower tube sheet; a second heat medium inlet pipe and a second heat medium outlet pipe connected to the inner cavity of the fourth cylinder are installed on the fourth cylinder;

[0023] The lower end of the second cylinder is sealedly connected to the upper end of the fourth cylinder, and the lower end of the fourth cylinder is sealedly connected to the upper end of the fifth cylinder, so that the lower end of the second cylinder is sealedly connected to the upper end of the fifth cylinder through the fourth cylinder;

[0024] A mixing chamber is formed between the first lower tube sheet and the second upper tube sheet, the lower end of the first heat exchange tube is connected to the mixing chamber, the upper end of the second heat exchange tube is connected to the mixing chamber, and the lower end of the second heat exchange tube is connected to the heating chamber, so that the lower end of the first heat exchange tube is connected to the heating chamber through the second heat exchange tube.

[0025] When the heat exchange amount is large, a longer heat exchange tube is required. When the heat exchange tube is long, the uniformity of raw material heating becomes worse. In order to eliminate this drawback, a second heat exchange part is added, and a mixing chamber is formed between the first heat exchange part and the second heat exchange part. After the raw material enters the mixing chamber, it is redistributed for a second time to improve the temperature uniformity.

[0026] In order to improve the processing performance of the equipment, a third cylinder is arranged between the second cylinder and the fourth cylinder. The upper end and the lower end of the third cylinder are both open. The upper end of the third cylinder is sealedly connected to the lower end of the second cylinder, and the lower end of the third cylinder is sealedly connected to the upper end of the fourth cylinder. The inner cavity of the third cylinder is formed as a mixing cavity.

[0027] When the third cylinder is not provided, it is necessary to extend the lower end of the second cylinder downward over the first lower tube sheet, or extend the upper end of the fourth cylinder upward over the second upper tube sheet, so as to form a mixing chamber between the first lower tube sheet and the second upper tube sheet. However, in this arrangement, the first lower tube sheet is far away from the lower end of the second cylinder, which causes inconvenience when the first lower tube sheet is welded to the second cylinder, and sometimes affects the manufacturing quality. In addition, the first lower tube sheet needs to be a tube sheet without a flange, so it is necessary to provide another connecting flange at the lower end of the second cylinder, which increases the difficulty of making the equipment. When the upper end of the fourth cylinder is extended upward over the second upper tube sheet, similar problems also exist.

[0028] After the single-ended third cylinder is provided, both the first lower tube sheet and the second upper tube sheet can be tube sheets with connecting flanges, thereby improving the manufacturing efficiency and manufacturing quality of the equipment.

[0029] Further, the first heat exchange tubes extend upward beyond the first upper tube sheet and into the inner cavity of the first shell; or the two heat exchange tubes extend upward beyond the second upper tube sheet and into the mixing cavity; or the first heat exchange tubes extend upward beyond the first upper tube sheet and into the inner cavity of the first shell, and the two heat exchange tubes extend upward beyond the second upper tube sheet and into the mixing cavity.

[0030] Preferably, the height of the first heat exchange tubes exceeding the first upper tube plate is 50-200 mm; the height of the second heat exchange tubes exceeding the second upper tube plate is 50-200 mm.

[0031] After the first heat exchange tubes are raised above the first upper tube sheet, an overflow pipe can be formed in the inner cavity of the first shell to ensure that the liquid is evenly distributed and enters the heating tubes evenly, thereby preventing scaling of some of the first heat exchange tubes due to lack of liquid flow.

[0032] After the second heat exchange tube array is raised above the second upper tube sheet, a certain amount of raw materials can be stored in the mixing chamber, and the raw materials that enter subsequently are mixed with the raw materials stored in the mixing chamber to improve the uniformity of temperature, which is beneficial to the uniformity of the temperature of the raw materials that enter the reactor subsequently.

[0033] Furthermore, at least the second and fourth cylinders are provided with exhaust pipes among the first shell, the second cylinder and the fourth cylinder. Preferably, exhaust pipes are provided on the first shell, the second cylinder and the fourth cylinder. When the machine is started, the heating evaporation device will be filled with air. After exhaust is provided, when the raw material enters the thermal evaporation device, the air in the device can be discharged from each exhaust pipe, so as to speed up the feeding speed, and each exhaust pipe can be closed in time according to the progress of feeding. Generally, valves are installed on each exhaust pipe.

[0034] Exhaust pipes must be provided on the second cylinder and the fourth cylinder, otherwise the heat exchange of the heat transfer medium will be affected. When the heat transfer medium is running, the gas in the second cylinder and the fourth cylinder must be discharged, otherwise it is easy to form gas blockage and affect the heat exchange area.

[0035] Further, the material outlet pipe is arranged at the upper end of the fifth cylinder, and there is a distance between the material outlet pipe and the upper end of the fifth cylinder, and the top of the inorganic thermal superconducting tube is not higher than the material outlet pipe. Further, the top of the inorganic thermal superconducting tube is lower than the material outlet pipe, and the distance between the top of the inorganic thermal superconducting tube and the lowest point of the material outlet pipe is 70-120 mm.

[0036] After the top of the inorganic thermal superconducting tube is not higher than the material outlet pipe, the part of the inorganic thermal superconducting tube located in the heating chamber is completely immersed in the raw material liquid, which can fully utilize the heat transfer area of ​​the inorganic thermal superconducting tube, and is not higher than the material outlet pipe. After there is a distance between the material outlet pipe and the upper end of the fifth cylinder, it can be ensured that a gas-liquid separation space is formed between the liquid surface of the liquid raw material and the upper end of the fifth cylinder in the heating chamber, which is conducive to the droplets carried in the gas phase raw material falling down and returning to the liquid raw material, reducing the amount of liquid raw material entering the reactor.

[0037] Specifically, to facilitate manufacturing, the fifth cylinder includes an upper cylinder and a lower cylinder fixedly connected together, wherein the upper cylinder is located on the upper side of the lower cylinder, the upper end of the upper cylinder is open, and the upper end of the upper cylinder forms the upper end of the fifth cylinder; the upper end of the lower cylinder is equipped with a third upper tube plate; the lower end of the lower cylinder forms the lower end of the fifth cylinder, and the lower end of the lower cylinder is closed; the third upper tube plate forms the partition.

[0038] When the fifth cylinder is an integral structure, the third upper tube sheet needs to be installed in the middle position of the fifth cylinder, which will cause inconvenience in the installation of the third upper tube sheet. After the fifth cylinder is divided into two cylinders, the upper cylinder and the lower cylinder, the third upper tube sheet is installed on the upper end of the lower cylinder, which can more conveniently complete the installation of the third upper tube sheet.

[0039] Furthermore, the first heat medium inlet pipe and the second heat medium inlet pipe are used to communicate with the hot working medium outlet of the reactor;

[0040] The first heat medium outlet pipe and the second heat medium outlet pipe are used to connect to the heat medium inlet of the reactor;

[0041] The material inlet pipe is used to connect the raw material inlet of the reactor;

[0042] When the heating evaporation device is started, the raw material enters the first shell through the material inlet pipe, then enters the heating chamber through the first heat exchange tube and the second heat exchange tube in sequence, is heated to the first set temperature, and then is discharged through the material inlet pipe and enters the reactor for reaction; when the raw material passes through the heating chamber, the inorganic thermal superconductor heats the raw material;

[0043] After being discharged from the hot medium outlet of the reactor, the heat transfer medium enters the inner cavity of the second cylinder and the inner cavity of the fourth cylinder through the first heat medium inlet pipe and the second heat medium inlet pipe, and heats the raw materials flowing through the first heat exchange tube and the second heat exchange tube respectively through the first heat exchange tube and the second heat exchange tube;

[0044] As the reaction in the reactor proceeds, the temperature of the heat transfer medium continues to rise, and the heating power of the inorganic thermal superconducting tube is reduced synchronously. When the temperature of the heat transfer medium reaches the second set temperature, the heating of the inorganic thermal superconducting tube is stopped.

[0045] In the present application, the first heat exchange part and the second heat exchange part serve as the heat exchange area between the heat transfer medium and the raw material, and the electric heating part serves as the raw material heating area during startup. In the electric heating area, inorganic thermal superconducting tubes are used to directly heat the raw material. In the prior art, the heat transfer medium needs to be heated by a temporary heat exchanger before exchanging heat with the raw material, which reduces the heat exchange efficiency. In the present application, inorganic thermal superconducting tubes are used to directly heat the raw material, with almost no heat energy loss. In the process of heating the raw material with inorganic thermal superconducting tubes, the heat energy generated by the reactor is continuously conducted to the heat transfer medium, and the temperature of the heat transfer medium is continuously increased until the set temperature is reached. At this time, the heating of the raw material by the inorganic thermal superconducting tube can be stopped, and the heat energy generated by the reactor can be completely used to heat the raw material. Since the reaction heat generated by the reactor is gradually conducted to the heat transfer medium from the start of startup, no waste will be caused, and 100% thermal coupling can be achieved during the reaction process.

[0046] Specifically, the heat transfer medium is discharged from the heat medium outlet of the reactor and is divided into two paths, one of which enters the inner cavity of the second cylinder through the first heat medium inlet pipe, and then returns to the reactor after being discharged through the first heat medium outlet pipe, and the other enters the inner cavity of the fourth cylinder through the second heat medium inlet pipe, and then returns to the reactor after being discharged through the second heat medium outlet pipe; or

[0047] After the heat transfer medium is discharged from the hot medium outlet of the reactor, it enters the inner cavity of the fourth cylinder through the second heat medium inlet pipe, and then is discharged through the second heat medium outlet pipe, and then enters the inner cavity of the second cylinder through the first heat medium inlet pipe, and finally is discharged through the first heat medium outlet pipe and returns to the reactor;

[0048] When the first heat medium inlet pipe is located above the first heat medium outlet pipe, and the second heat medium inlet pipe is located above the second heat medium outlet pipe, the heat transfer medium is steam;

[0049] When the first heat medium inlet pipe is located below the first heat medium outlet pipe, and the second heat medium inlet pipe is located below the second heat medium outlet pipe, the heat transfer medium is liquid.

[0050] According to different needs, the above two heat transfer media can be used to heat the raw materials. It is also possible to install the corresponding pipelines according to the two methods at the same time and switch them using valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a structural schematic diagram of an embodiment of the present invention.

[0052] Figure 2 yes Figure 1 Enlarged view of part A.

[0053] Figure 3 yes Figure 1Magnified view of part B.

[0054] Figure 4 It is a schematic diagram of an embodiment of the present invention when connected to a reactor.

[0055] Figure 5 It is a schematic diagram of the prior art. DETAILED DESCRIPTION

[0056] See also Figure 1-Figure 3 , a heating evaporation device based on inorganic thermal superconducting technology, which includes a thermal working fluid heating part and an electric heating part 500 connected together.

[0057] The thermal medium heating part includes a feed part 100, a first heat exchange part 200, a mixing part 300 and a second heat exchange part 400 which are sequentially connected from top to bottom. The electric heating part 500 is located at the lower side of the second heat exchange part 400 and connected to the second heat exchange part 400.

[0058] The feed part 100 includes a first shell 101 extending in the vertical direction, the first shell 101 includes a first cylinder 110 and a head 111 installed at the upper end of the first cylinder 110, the lower end of the first cylinder is open; a material inlet pipe 112 is installed on the side wall of the first cylinder 110. A first exhaust pipe 113 is installed on the top of the head.

[0059] The first heat exchange part 200 includes a second cylinder 210 extending in the vertical direction, a first upper tube sheet 21 is installed at the upper end of the second cylinder 210, a first lower tube sheet 22 is installed at the lower end of the second cylinder 210, and a plurality of first heat exchange tubes 23 are installed on the first upper tube sheet and the first lower tube sheet and penetrate the first upper tube sheet and the first lower tube sheet. A first heat medium inlet pipe 211 and a first heat medium outlet pipe 212 connected to the inner cavity of the second cylinder 210 are installed on the second cylinder 210, wherein the first heat medium inlet pipe 211 is located at the lower side of the second cylinder 210, and the first heat medium outlet pipe 212 is located at the upper side of the second cylinder 210.

[0060] A first exhaust pipe 214 is installed on the side wall of the lower end of the second cylinder 210, and a second exhaust pipe 213 is installed on the side wall of the upper end of the second cylinder 210. A support 216 is installed on the outer wall of the second cylinder 210. A first baffle 24 is installed in the second cylinder.

[0061] The lower end of the first cylinder 110 and the upper end of the second cylinder 210 are sealed together by a flange.

[0062] The mixing part 300 includes a third cylinder 310 extending in the vertical direction, the upper and lower ends of the third cylinder are open, and a second cleaning pipe 314 is installed on the side wall of the lower end of the third cylinder 310. The upper end of the third cylinder 310 is sealedly connected to the lower end of the second cylinder 210 by a flange. The inner cavity of the third cylinder 310 is formed as a mixing cavity.

[0063] The second heat exchange part 400 includes a fourth cylinder 410 extending in the vertical direction, a second upper tube sheet 41 is installed at the upper end of the fourth cylinder 410, a second lower tube sheet 42 is installed at the lower end of the fourth cylinder 410, and a plurality of second heat exchange tubes 43 are installed on the second upper tube sheet and the second lower tube sheet and penetrate the second upper tube sheet and the second lower tube sheet. A second heat medium inlet pipe 411 and a second heat medium outlet pipe 412 connected to the inner cavity of the fourth cylinder 410 are installed on the fourth cylinder 410, wherein the second heat medium inlet pipe 411 is located at the lower side of the fourth cylinder 410, and the second heat medium outlet pipe 412 is located at the upper side of the fourth cylinder 410.

[0064] A third exhaust pipe 414 is installed on the side wall of the lower end of the fourth cylinder 410, and a third exhaust pipe 413 is installed on the side wall of the upper end of the fourth cylinder 410. A second baffle 44 is installed in the fourth cylinder.

[0065] The lower end of the third cylinder 310 and the upper end of the fourth cylinder 410 are sealed together by a flange.

[0066] The electric heating part 500 is located at the lower side of the thermal medium heating part, and the electric heating part includes a fifth cylinder extending in the vertical direction. In this embodiment, the fifth cylinder includes an upper cylinder 510 and a lower cylinder 610 fixedly connected together in the up-down direction, wherein the upper cylinder is located at the upper side of the lower cylinder, and the upper end of the upper cylinder is open, and the upper end of the upper cylinder forms the upper end of the fifth cylinder. The upper end of the upper cylinder is sealed and connected to the lower end of the fourth cylinder 410 by a flange. A third baffle 54 is installed in the upper cylinder.

[0067] The upper end of the lower cylinder is installed with a third upper tube plate 61; the lower end of the lower cylinder forms the lower end of the fifth cylinder, and the lower end of the lower cylinder is closed. Specifically in this embodiment, a bottom flange 62 is installed at the lower end of the lower cylinder, and a blind plate 69 is sealedly installed on the bottom flange 62 to close the lower end of the lower cylinder. That is, the upper end of the fifth cylinder is open, and the lower end of the fifth cylinder is closed.

[0068] The inner cavity of the upper cylinder is formed as a heating cavity, and the inner cavity of the lower cylinder is formed as a wiring cavity. The inorganic thermal superconducting tube 63 extends in the vertical direction and is sealed and installed on the third upper tube plate 61, the upper end of the inorganic thermal superconducting tube extends into the heating cavity, and the lower end of the inorganic thermal superconducting tube extends into the wiring cavity.

[0069] A material outlet pipe 512 is provided on the outer wall of the upper cylinder, and the material outlet pipe is connected to the heating chamber. The material outlet pipe 512 is installed at the upper end of the upper cylinder 510, that is, the material outlet pipe is provided at the upper end of the fifth cylinder. A first liquid level gauge interface 516 and a second liquid level gauge interface 517 are installed on the outer side of the upper cylinder in the up-down direction, and a liquid level gauge 519 is installed on the first liquid level gauge interface 516 and the second liquid level gauge interface 517.

[0070] A fourth row of clean pipes 514 is also installed at the lower end of the upper cylinder, and a thermometer interface 515 is installed.

[0071] A power supply box 612 is installed outside the lower cylinder 610, and the wire 631 of the inorganic thermal superconducting tube extends out of the wiring cavity and is connected to the power supply box.

[0072] The first cylinder, the second cylinder, the third cylinder, the fourth cylinder and the fifth cylinder are coaxially arranged.

[0073] In this embodiment, the upper end of the first heat exchange tube is connected to the inner cavity of the first shell, and the upper end of the first heat exchange tube extends upward beyond the first upper tube sheet and then extends into the inner cavity of the first shell. In this embodiment, the height of the first heat exchange tube above the first upper tube sheet is 120 mm. The lower end of the first heat exchange tube is connected to the mixing cavity.

[0074] The upper end of the second heat exchange tube is connected to the mixing chamber, and the upper end of the second heat exchange tube exceeds the second upper tube plate and extends into the mixing chamber. In this embodiment, the height of the second heat exchange tube exceeding the second upper tube plate is 180 mm. The lower end of the second heat exchange tube is connected to the heating chamber.

[0075] In this embodiment, the fifth cylinder is divided into an upper cylinder and a lower cylinder, which is only for the convenience of installing the third upper tube sheet 61 and the inorganic thermal superconducting tube 63. It can be understood that in other embodiments, the fifth cylinder can be formed into an integral structure, in which the third upper tube sheet becomes a partition, and the inorganic thermal superconducting tube is installed on the partition.

[0076] The lower end of the first cylinder is sealedly connected to the upper end of the second cylinder, and the lower end of the second cylinder is sealedly connected to the upper end of the fourth cylinder, so that a mixing chamber is formed between the first lower tube plate and the second upper tube plate;

[0077] In this embodiment, a third cylinder is specially provided to form a mixing chamber. It can be understood that in other embodiments, the third cylinder can be eliminated, and the second cylinder is moved downward over the first lower tube plate to form a first chamber, which is used as the mixing chamber.

[0078] Alternatively, after the fourth cylinder is moved upward over the second upper tube plate, a second chamber is formed, and the second chamber is used as a mixing chamber. Alternatively, while the second cylinder is moved downward over the first lower tube plate, the fourth cylinder is moved upward over the second upper tube plate, so that a third chamber is formed between the first lower tube plate and the second upper tube plate, and the third chamber is formed as a mixing chamber.

[0079] In this embodiment, the material outlet pipe is arranged at the upper end of the fifth cylinder, and there is a distance between the material outlet pipe and the upper end of the fifth cylinder. The top of the inorganic thermal superconducting tube is lower than the material outlet pipe, and the distance between the top of the inorganic thermal superconducting tube and the lowest point of the material outlet pipe is 100 mm.

[0080] Please also see Figure 4 In this embodiment, the first heat medium inlet pipe and the second heat medium inlet pipe are used to connect the heat medium outlet 721 of the reactor 700; the first heat medium outlet pipe and the second heat medium outlet pipe are used to connect the heat medium inlet 722 of the reactor; the material outlet pipe is used to connect the raw material inlet 723 of the reactor.

[0081] When the heating evaporation device is started, the raw material enters the first shell through the material inlet pipe, then enters the heating chamber through the first heat exchange tube and the second heat exchange tube in sequence, is heated to the first set temperature, and then is discharged through the material inlet pipe and enters the reactor for reaction; when the raw material passes through the heating chamber, the inorganic thermal superconducting tube heats the raw material.

[0082] After being discharged from the hot medium outlet of the reactor, the heat transfer medium enters the inner cavity of the second cylinder and the inner cavity of the fourth cylinder through the first heat medium inlet pipe and the second heat medium inlet pipe, and heats the raw materials flowing through the first heat exchange tube and the second heat exchange tube respectively.

[0083] As the reaction in the reactor proceeds, the temperature of the heat transfer medium continues to rise, and the heating power of the inorganic thermal superconducting tube is reduced synchronously. When the temperature of the heat transfer medium reaches the second set temperature, the heating of the inorganic thermal superconducting tube is stopped.

[0084] In this embodiment, after the heat transfer medium is discharged from the hot medium outlet of the reactor, it enters the inner cavity of the fourth cylinder through the second heat medium inlet pipe, and then is discharged through the second heat medium outlet pipe, and then enters the inner cavity of the second cylinder through the first heat medium inlet pipe, and finally is discharged through the first heat medium outlet pipe and returns to the reactor.

[0085] In this embodiment, the heat transfer medium passes through the inner cavity of the fourth cylinder and the inner cavity of the second cylinder continuously, and the inner cavity of the fourth cylinder and the inner cavity of the second cylinder are in series.

[0086] It can be understood that in other embodiments, the heat transfer medium can be divided into two paths after being discharged from the heat medium outlet of the reactor, one of which enters the inner cavity of the second cylinder through the first heat medium inlet pipe, and then returns to the reactor after being discharged through the first heat medium outlet pipe, and the other path enters the inner cavity of the fourth cylinder through the second heat medium inlet pipe, and then returns to the reactor after being discharged through the second heat medium outlet pipe, so that the inner cavity of the fourth cylinder and the inner cavity of the second cylinder are in parallel.

[0087] The inorganic thermal superconducting tube is a mature heating tube in the prior art, which specifically includes an inorganic thermal superconducting heat transfer tube and an electric heating tube and a lead wire protection tube arranged in the inorganic thermal superconducting heat transfer tube. The cavity between the electric heating tube and the inorganic thermal superconducting heat transfer tube and between the lead wire protection tube and the inorganic thermal superconducting heat transfer tube is filled with an inorganic thermal superconducting working medium.

[0088] In the present embodiment, two heat exchange parts, a first heat exchange part and a second heat exchange part, are provided, and a mixing part is provided between the two heat exchange parts. It can be understood that in other embodiments, when the heat exchange amount is small, the second heat exchange part and the mixing part can be cancelled, and the first heat exchange part can be directly connected to the electric heating part.

[0089] In this embodiment, the heat transfer medium is heat-conducting oil, the first heat medium inlet pipe is located below the first heat medium outlet pipe, and the second heat medium inlet pipe is located below the second heat medium outlet pipe.

[0090] It can be understood that in other embodiments, when steam is used as the heat transfer medium, the first heat medium inlet pipe is located above the first heat medium outlet pipe, and the second heat medium inlet pipe is located above the second heat medium outlet pipe.

[0091] See also Figure 4 When the present embodiment is started up, the liquid raw material 760 enters the first cylinder 110 through the material inlet pipe 112, and then enters the upper cylinder 510 after passing through the first heat exchange tube 23, the mixing section 300 and the second heat exchange tube 43 in sequence. The inorganic thermal superconducting tube 63 heats and vaporizes the raw material to form a gaseous raw material, and the gaseous raw material enters the reactor 700 for reaction.

[0092] After the heat transfer oil serving as the heat transfer medium is discharged from the heat medium outlet 721 of the reactor 700, it is driven by the first circulation pump 750 to enter the second heat medium inlet pipe 411 and into the fourth cylinder 410, and then is discharged from the second heat medium outlet pipe 412, and then enters the second cylinder 210 through the first heat medium inlet pipe 211, and after being discharged from the first heat medium outlet pipe 212, it returns to the reactor 700 through the heat medium inlet 722 of the reactor 700.

[0093] Since the inorganic thermal superconductor is used to heat the raw materials directly, there is almost no heat energy loss. In the process of heating the raw materials with the inorganic thermal superconductor, the heat energy generated by the reactor is continuously transferred to the heat transfer oil, and the temperature of the heat transfer oil is continuously increased until the set temperature is reached. At this time, the inorganic thermal superconductor can stop heating the raw materials, and the heat energy generated by the reactor is completely used to heat the raw materials. Since the reaction heat generated by the reactor is gradually transferred to the heat transfer oil from the start of the operation, there will be no waste, and 100% thermal coupling can be achieved in the reaction process.

[0094] See also Figure 5 In the prior art, the raw material D811 enters the reactor D 822 only after passing through the preheater 821, and the product 812 generated by the reaction enters the next process. After the heat transfer medium is discharged from the reactor D, it first enters the external heater 824 driven by the second circulation pump 823. The external heater 824 generally adopts a steam heater or an electric heater. After being heated by the external heater, the heat transfer medium enters the preheater 821 to heat the raw material D. After the heat transfer medium heats the raw material D, it returns to the reactor D, and the reaction heat generated by the reactor D is gradually transferred to the heat transfer medium. At the beginning of production, in order to speed up the normal production, the heat transfer medium needs to be heated to the set temperature first, and then the raw material D is heated. As the reaction proceeds, the amount of heat applied to the heat transfer medium by the external heater is gradually reduced until the external heater completely stops heating the heat transfer medium.

[0095] In order to ensure the temperature of the raw material D when it enters the reactor D, when starting up, it is necessary to first run the heat transfer medium in the entire system and use an external heater to heat the heat transfer medium until the heat transfer medium is heated to the set temperature before the raw material D can enter the preheater 821. This preheating method prolongs the start-up time of the equipment.

[0096] When the present embodiment is adopted, since an inorganic thermal superconducting tube is used to directly heat the raw materials during startup, the raw materials can quickly reach the set temperature, and the reaction of the reactor can quickly reach a normal reaction state. After adopting the present application, the time for the reaction in the reactor to reach normal operation is 1.3 hours, while when the prior art is adopted, the time for the reaction in the reactor to reach normal operation is 24-28 hours, which can save more than 22 hours.

Claims

1. A heating evaporation device based on inorganic thermal superconducting technology, characterized in that: It includes a hot working medium heating part and an electric heating part connected together; The heat medium heating part comprises a feed part and a first heat exchange part which are sequentially connected from top to bottom, and the electric heating part is located at the lower side of the first heat exchange part and connected to the first heat exchange part; The feed part comprises a first shell extending in a vertical direction, the first shell comprises a first cylinder and a sealing head installed at the upper end of the first cylinder, and the lower end of the first cylinder is open; a material inlet pipe is arranged on the first shell; The first heat exchange part includes a second cylinder extending in the vertical direction, a first upper tube sheet is installed at the upper end of the second cylinder, a first lower tube sheet is installed at the lower end of the second cylinder, a plurality of first heat exchange tubes are installed on the first upper tube sheet and the first lower tube sheet, and penetrate the first upper tube sheet and the first lower tube sheet; a first heat medium inlet pipe and a first heat medium outlet pipe connected to the inner cavity of the second cylinder are installed on the second cylinder; The electric heating part is located at the lower side of the hot medium heating part, and the electric heating part includes a fifth cylinder extending in the vertical direction, the upper end of the fifth cylinder is open, and the lower end of the fifth cylinder is closed; a partition is installed in the fifth cylinder, and the inorganic thermal superconducting tube extends in the vertical direction and is sealed on the partition, and the partition divides the inner cavity of the fifth cylinder into a heating cavity and a wiring cavity; the upper end of the inorganic thermal superconducting tube extends into the heating cavity, and the lower end of the inorganic thermal superconducting tube extends into the wiring cavity; a power box and a material outlet pipe are installed on the fifth cylinder, the material outlet pipe is connected to the heating cavity, and the wire of the inorganic thermal superconducting tube extends out of the wiring cavity and is connected to the power box; The first cylinder, the second cylinder and the fifth cylinder are coaxially arranged; The lower end of the first cylinder is sealed and connected to the upper end of the second cylinder, and the lower end of the second cylinder is sealed and connected to the upper end of the fifth cylinder; The upper ends of the first heat exchange tubes are connected to the inner cavity of the first shell, and the lower ends of the first heat exchange tubes are connected to the heating cavity.

2. The heating evaporation device according to claim 1, characterized in that: The thermal medium heating part also includes a second heat exchange part, which is located between the first heat exchange part and the electric heating part; The second heat exchange part includes a fourth cylinder extending in the vertical direction, a second upper tube sheet is installed at the upper end of the fourth cylinder, a second lower tube sheet is installed at the lower end of the fourth cylinder, a plurality of second heat exchange tubes are installed on the second upper tube sheet and the second lower tube sheet, and penetrate the second upper tube sheet and the second lower tube sheet; a second heat medium inlet pipe and a second heat medium outlet pipe connected to the inner cavity of the fourth cylinder are installed on the fourth cylinder; The lower end of the second cylinder is sealedly connected to the upper end of the fourth cylinder, and the lower end of the fourth cylinder is sealedly connected to the upper end of the fifth cylinder, so that the lower end of the second cylinder is sealedly connected to the upper end of the fifth cylinder through the fourth cylinder; A mixing chamber is formed between the first lower tube sheet and the second upper tube sheet, the lower end of the first heat exchange tube is connected to the mixing chamber, the upper end of the second heat exchange tube is connected to the mixing chamber, and the lower end of the second heat exchange tube is connected to the heating chamber, so that the lower end of the first heat exchange tube is connected to the heating chamber through the second heat exchange tube.

3. The heating evaporation device according to claim 2, characterized in that: The first heat exchange tubes extend upward beyond the first upper tube sheet and into the inner cavity of the first shell; or The two heat exchange tubes extend upward beyond the second upper tube sheet and into the mixing chamber; or The first heat exchange tubes extend upwards beyond the first upper tube plate and then extend into the inner cavity of the first shell, and the second heat exchange tubes extend upwards beyond the second upper tube plate and then extend into the mixing cavity.

4. The heating evaporation device according to claim 3, characterized in that: The height of the first heat exchange tube above the first upper tube sheet is 50-200 mm; The height of the two heat exchange tubes exceeding the second upper tube plate upwards is 50-200 mm.

5. The heating evaporation device according to claim 2, characterized in that: Among the first shell, the second cylinder and the fourth cylinder, at least the second cylinder and the fourth cylinder are provided with an exhaust pipe.

6. The heating evaporation device according to claim 1, characterized in that: The material outlet pipe is arranged at the upper end of the fifth cylinder, and there is a distance between the material outlet pipe and the upper end of the fifth cylinder, and the top of the inorganic thermal superconducting tube is not higher than the material outlet pipe.

7. The heating evaporation device according to claim 6, characterized in that: The top of the inorganic thermal superconducting tube is lower than the material outlet pipe, and the distance between the top of the inorganic thermal superconducting tube and the lowest point of the material outlet pipe is 70-120 mm.

8. The heating evaporation device according to claim 1, characterized in that: The fifth cylinder comprises an upper cylinder and a lower cylinder fixedly connected together, wherein the upper cylinder is located on the upper side of the lower cylinder, the upper end of the upper cylinder is open, and the upper end of the upper cylinder forms the upper end of the fifth cylinder; The upper end of the lower cylinder is installed with a third upper tube plate; the lower end of the lower cylinder is formed as the lower end of the fifth cylinder, and the lower end of the lower cylinder is closed; The third upper tube plate is formed as the partition plate.

9. The heating evaporation device according to any one of claims 2 to 5, characterized in that: The first heat medium inlet pipe and the second heat medium inlet pipe are used to communicate with the hot working medium outlet of the reactor; The first heat medium outlet pipe and the second heat medium outlet pipe are used to connect to the heat medium inlet of the reactor; The material inlet pipe is used to connect the raw material inlet of the reactor; When the heating evaporation device is started, the raw material enters the first shell through the material inlet pipe, then enters the heating chamber after passing through the first heat exchange tube and the second heat exchange tube in sequence, is heated to the first set temperature, and then is discharged through the material inlet pipe and enters the reactor for reaction; When the raw materials pass through the heating chamber, the inorganic thermal superconductor heats the raw materials; After being discharged from the hot medium outlet of the reactor, the heat transfer medium enters the inner cavity of the second cylinder and the inner cavity of the fourth cylinder through the first heat medium inlet pipe and the second heat medium inlet pipe, and heats the raw materials flowing through the first heat exchange tube and the second heat exchange tube respectively through the first heat exchange tube and the second heat exchange tube; As the reaction in the reactor proceeds, the temperature of the heat transfer medium continues to rise, and the heating power of the inorganic thermal superconducting tube is reduced synchronously. When the temperature of the heat transfer medium reaches the second set temperature, the heating of the inorganic thermal superconducting tube is stopped.

10. The heating evaporation device according to claim 9, characterized in that: The heat transfer medium is discharged from the heat medium outlet of the reactor and is divided into two paths, one of which enters the inner cavity of the second cylinder through the first heat medium inlet pipe, and then returns to the reactor after being discharged through the first heat medium outlet pipe, and the other enters the inner cavity of the fourth cylinder through the second heat medium inlet pipe, and then returns to the reactor after being discharged through the second heat medium outlet pipe; or After the heat transfer medium is discharged from the hot medium outlet of the reactor, it enters the inner cavity of the fourth cylinder through the second heat medium inlet pipe, and then is discharged through the second heat medium outlet pipe, and then enters the inner cavity of the second cylinder through the first heat medium inlet pipe, and finally is discharged through the first heat medium outlet pipe and returns to the reactor; When the first heat medium inlet pipe is located above the first heat medium outlet pipe, and the second heat medium inlet pipe is located above the second heat medium outlet pipe, the heat transfer medium is steam; When the first heat medium inlet pipe is located below the first heat medium outlet pipe, and the second heat medium inlet pipe is located below the second heat medium outlet pipe, the heat transfer medium is liquid.

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