Heating evaporation device based on inorganic heat superconducting technology
阅读说明：本技术 一种基于无机热超导技术的加热蒸发装置 (Heating evaporation device based on inorganic heat superconducting technology ) 是由 朱恩俊 严加高 潘成军 于 2020-07-03 设计创作，主要内容包括：本发明公开了一种基于无机热超导技术的加热蒸发装置,其包括连接在一起的热工质加热部和电加热部；热工质加热部包括相接的进料部和第一换热部；在进料部上设置有物料进口管；第一换热部的第二筒体内安装有第一上管板、第一下管板和安装在第一上管板和第一下管板上的第一换热列管,以及第一热媒进管和第一热媒出管；电加热部包括加热腔和接线腔,无机热超导管的上端和下端分别伸入到加热腔和接线腔内；在电加热部上安装有连通加热腔的物料出口管；第一换热列管两端分别连通第一壳体的内腔和加热腔。采用本申请,能够使反应器所产生的反应热就陆续传导到传热工质内,不会造成浪费,可以实现反应过程中100％的热耦合。(The invention discloses a heating evaporation device based on an inorganic thermal superconducting technology, which comprises a hot working medium heating part and an electric heating part which are connected together; the hot working medium heating part comprises a feeding part and a first heat exchange part which are connected with each other; a material inlet pipe is arranged on the feeding part; a first upper tube plate, a first lower tube plate, a first heat exchange tube array, a first heat medium inlet tube and a first heat medium outlet tube are arranged in the second cylinder of the first heat exchange part; the electric heating part comprises a heating cavity and a wiring cavity, and the upper end and the lower end of the inorganic heat superconducting pipe respectively extend into the heating cavity and the wiring cavity; a material outlet pipe communicated with the heating cavity is arranged on the electric heating part; the two ends of the first heat exchange tube are respectively communicated with the inner cavity and the heating cavity of the first shell. By adopting the method and the device, the reaction heat generated by the reactor can be continuously conducted into the heat transfer working medium, no waste is caused, and 100% of thermal coupling in the reaction process can be realized.)
1. A heating evaporation device based on inorganic thermal superconducting technology is characterized by comprising a hot working medium heating part and an electric heating part which are connected together;
the hot working medium heating part comprises a feeding part and a first heat exchanging part which are sequentially connected from top to bottom, and the electric heating part is positioned at the lower side of the first heat exchanging part and is connected with the first heat exchanging part;
The feeding part comprises a first shell extending along the vertical direction, the first shell comprises a first cylinder and a seal head arranged at the upper end of the first cylinder, and the lower end of the first cylinder is in an open shape; a material inlet pipe is arranged on the first shell;
the first heat exchange part comprises a second cylinder body extending along the vertical direction, a first upper tube plate is arranged at the upper end of the second cylinder body, a first lower tube plate is arranged at the lower end of the second cylinder body, and a plurality of first heat exchange tubes are arranged on the first upper tube plate and the first lower tube plate and penetrate through the first upper tube plate and the first lower tube plate; a first heat medium inlet pipe and a first heat medium outlet pipe which are communicated with the inner cavity of the second cylinder are arranged on the second cylinder;
the electric heating part is positioned at the lower side of the hot working medium heating part and comprises a fifth cylinder body extending along the vertical direction, the upper end of the fifth cylinder body is open, and the lower end of the fifth cylinder body is closed; a partition board is arranged in the fifth cylinder, the inorganic heat superconducting pipe extends along the vertical direction and is hermetically arranged on the partition board, and the partition board divides the inner cavity of the fifth cylinder into a heating cavity and a wiring cavity; the upper end of the inorganic heat superconducting pipe extends into the heating cavity, and the lower end of the inorganic heat superconducting pipe extends into the wiring cavity; a power supply box and a material outlet pipe are arranged on the fifth barrel body, the material outlet pipe is communicated with the heating cavity, and a lead of the inorganic heat superconducting pipe extends out of the wiring cavity and then is connected into the power supply box;
The first cylinder, the second cylinder and the fifth cylinder are coaxially arranged;
the lower end of the first cylinder is hermetically connected with the upper end of the second cylinder, and the lower end of the second cylinder is hermetically connected with the upper end of the fifth cylinder;
the upper end of the first heat exchange tube nest communicates with the inner cavity of the first shell, and the lower end of the first heat exchange tube nest communicates with the heating cavity.
2. A thermal evaporation apparatus according to claim 1,
the hot working medium heating part also comprises a second heat exchanging part which is positioned between the first heat exchanging part and the electric heating part;
the second heat exchange part comprises a fourth cylinder body extending along the vertical direction, a second upper tube plate is arranged at the upper end of the fourth cylinder body, a second lower tube plate is arranged at the lower end of the fourth cylinder body, and a plurality of second heat exchange tubes are arranged on the second upper tube plate and the second lower tube plate and penetrate through the second upper tube plate and the second lower tube plate; a second heat medium inlet pipe and a second heat medium outlet pipe which are communicated with the inner cavity of the fourth cylinder are arranged on the fourth cylinder;
the lower end of the second cylinder is hermetically connected with the upper end of the fourth cylinder, and the lower end of the fourth cylinder is hermetically connected with the upper end of the fifth cylinder, so that the lower end of the second cylinder is hermetically connected with the upper end of the fifth cylinder through the fourth cylinder;
Form a material mixing chamber between first bottom tube sheet and second top tube sheet, the lower extreme intercommunication this material mixing chamber of first heat transfer tubulation, the upper end intercommunication material mixing chamber of second heat transfer tubulation, the lower extreme intercommunication heating chamber of second heat transfer tubulation makes the lower extreme of first heat transfer tubulation communicate the heating chamber through the second heat transfer tubulation.
3. A thermal evaporation apparatus according to claim 2,
the first heat exchange tube nest extends into the inner cavity of the first shell after exceeding the first upper tube plate upwards; or
The second heat exchange tube array extends into the mixing cavity after exceeding the second upper tube plate upwards; or
The first heat exchange tube array upwards exceeds the first upper tube plate and then extends into the inner cavity of the first shell, and the two heat exchange tube arrays upwards exceed the second upper tube plate and then extend into the mixing cavity.
4. A thermal evaporation apparatus according to claim 3,
the height of the first heat exchange tube array which exceeds the first upper tube plate upwards is 50-200 mm;
the height of the two heat exchange tubes which exceed the second upper tube plate upwards is 50-200 mm.
5. A thermal evaporation apparatus according to claim 2,
and exhaust pipes are arranged on at least the second cylinder and the fourth cylinder among the first shell, the second cylinder and the fourth cylinder.
6. A thermal evaporation apparatus according to claim 1,
the material outlet pipe is arranged at the upper end of the fifth barrel, a distance is reserved between the material outlet pipe and the upper end of the fifth barrel, and the top of the inorganic heat superconducting pipe is not higher than the material outlet pipe.
7. A thermal evaporation apparatus according to claim 6,
the top of the inorganic heat superconducting pipe is lower than the material outlet pipe, and the distance between the top of the inorganic heat superconducting pipe and the lowest point of the material outlet pipe is 70-120 mm.
8. A thermal evaporation apparatus according to claim 1,
the fifth cylinder comprises an upper cylinder and a lower cylinder which are fixedly connected together, wherein the upper cylinder is positioned at the upper side of the lower cylinder, the upper end of the upper cylinder is open, and the upper end of the upper cylinder is formed into the upper end of the fifth cylinder;
the upper end of the lower cylinder is provided with a third upper tube plate; the lower end of the lower cylinder is formed into the lower end of a fifth cylinder, and the lower end of the lower cylinder is closed;
the third upper tube panel forms the partition.
9. A thermal evaporation apparatus according to any one of claims 2 to 5,
the first heating medium inlet pipe and the second heating medium inlet pipe are used for communicating a hot working medium outlet of the reactor;
The first heating medium outlet pipe and the second heating medium outlet pipe are used for communicating a hot working medium inlet of the reactor;
the material inlet pipe is used for communicating with a raw material inlet of the reactor;
when the heating evaporation device is started, raw materials enter the first shell through the material inlet pipe, then sequentially pass through the first heat exchange tube array and the second heat exchange tube array and then enter the heating cavity, are heated to a first set temperature, are discharged through the material inlet pipe and then enter the reactor for reaction; when the raw material passes through the heating cavity, the inorganic heat superconducting pipe heats the raw material;
after being discharged from a hot working medium outlet of the reactor, the heat transfer working medium enters an inner cavity of the second cylinder and an inner cavity of the fourth cylinder through the first heat medium inlet pipe and the second heat medium inlet pipe, and the raw materials flowing through the first heat exchange tube nest and the second heat exchange tube nest are heated through the first heat exchange tube nest and the second heat exchange tube nest respectively;
and (3) continuously raising the temperature of the heat transfer working medium along with the reaction in the reactor, synchronously reducing the heating power of the inorganic heat superconducting pipe, and stopping heating the inorganic heat superconducting pipe when the temperature of the heat transfer working medium reaches a second set temperature.
10. A thermal evaporation apparatus according to claim 9,
The heat transfer working medium is discharged from a hot working medium outlet of the reactor and then divided into two paths, wherein one path enters the inner cavity of the second cylinder through the first heat medium inlet pipe, then is discharged through the first heat medium outlet pipe and then returns to the reactor, and the other path enters the inner cavity of the fourth cylinder through the second heat medium inlet pipe, then is discharged through the second heat medium outlet pipe and then returns to the reactor; or
The heat transfer working medium is discharged from a hot working medium outlet of the reactor, enters an inner cavity of the fourth cylinder through the second heat medium inlet pipe, is discharged through the second heat medium outlet pipe, enters an inner cavity of the second cylinder through the first heat medium inlet pipe, and is finally discharged through the first heat medium outlet pipe and returns to the reactor;
when the first heat medium inlet pipe is positioned above the first heat medium outlet pipe and the second heat medium inlet pipe is positioned above the second heat medium outlet pipe, the heat transfer working medium is steam;
when the first heat medium inlet pipe is positioned below the first heat medium outlet pipe and the second heat medium inlet pipe is positioned below the second heat medium outlet pipe, the heat transfer working medium is liquid.
Technical Field
The invention relates to a heating evaporation device based on an inorganic thermal superconducting technology.
Background
In order to improve the secondary utilization efficiency of heat energy, enterprises pay more and more attention to the thermal coupling technology in the production process, particularly, the heat energy generated in the chemical reaction process is recycled, but the heat energy generated in the reaction can be utilized only when the vehicles are normally driven, and at the initial driving stage, because the heat transfer working medium for transferring the heat energy is still in a cold state and cannot be thermally coupled, external heating is needed to be adopted to heat the raw materials until the vehicles are normally driven.
In order to reduce the use of external energy, in general, enterprises are equipped with at least two sets of equipment, when starting production, one set of equipment is started firstly, raw materials are heated by the external energy, and other equipment is started gradually by the equipment which finishes driving after normal operation. The equipment allocation mode has the relatively feasible aspect for production enterprises needing to allocate a plurality of sets of equipment, but for the enterprises needing to satisfy the production only by single equipment, the equipment purchasing cost and the equipment operating cost are increased, and the thermal coupling efficiency in the reaction process cannot be effectively improved. Even for enterprises which need to be equipped with a plurality of sets of equipment, the problem that the thermal coupling efficiency cannot be improved exists.
For utilizing the reaction heat, need dispose the pre-heater, this pre-heater is used for carrying out the heat transfer with the reaction heat with the raw materials, in order to drive smoothly, generally still need set up extra external heater, when driving, heat transfer working medium need at first enter into external heater and heat, accomplish the heat transfer working medium of heating and enter into the pre-heater and carry out the heat transfer with the raw materials, heat transfer working medium need can accomplish the heating of raw materials through twice heat transfer, heating efficiency and heat energy efficiency have great loss.
Disclosure of Invention
In order to solve the problems, the invention provides a heating evaporation device, which can effectively improve the thermal coupling efficiency of heat energy generated by a reactor and enable the heat energy to quickly reach a normal production state in a driving process, and the specific technical scheme is as follows:
a heating evaporation device based on inorganic thermal superconducting technology comprises a hot working medium heating part and an electric heating part which are connected together;
the hot working medium heating part comprises a feeding part and a first heat exchanging part which are sequentially connected from top to bottom, and the electric heating part is positioned at the lower side of the first heat exchanging part and is connected with the first heat exchanging part;
the feeding part comprises a first shell extending along the vertical direction, the first shell comprises a first cylinder and a seal head arranged at the upper end of the first cylinder, and the lower end of the first cylinder is in an open shape; a material inlet pipe is arranged on the first shell;
The first heat exchange part comprises a second cylinder body extending along the vertical direction, a first upper tube plate is arranged at the upper end of the second cylinder body, a first lower tube plate is arranged at the lower end of the second cylinder body, and a plurality of first heat exchange tubes are arranged on the first upper tube plate and the first lower tube plate and penetrate through the first upper tube plate and the first lower tube plate; a first heat medium inlet pipe and a first heat medium outlet pipe which are communicated with the inner cavity of the second cylinder are arranged on the second cylinder;
the electric heating part is positioned at the lower side of the hot working medium heating part and comprises a fifth cylinder body extending along the vertical direction, the upper end of the fifth cylinder body is open, and the lower end of the fifth cylinder body is closed; a partition board is arranged in the fifth cylinder, the inorganic heat superconducting pipe extends along the vertical direction and is hermetically arranged on the partition board, and the partition board divides the inner cavity of the fifth cylinder into a heating cavity and a wiring cavity; the upper end of the inorganic heat superconducting pipe extends into the heating cavity, and the lower end of the inorganic heat superconducting pipe extends into the wiring cavity; a power supply box and a material outlet pipe are arranged on the fifth barrel body, the material outlet pipe is communicated with the heating cavity, and a lead of the inorganic heat superconducting pipe extends out of the wiring cavity and then is connected into the power supply box;
The first cylinder, the second cylinder and the fifth cylinder are coaxially arranged;
the lower end of the first cylinder is hermetically connected with the upper end of the second cylinder, and the lower end of the second cylinder is hermetically connected with the upper end of the fifth cylinder;
the upper end of the first heat exchange tube nest communicates with the inner cavity of the first shell, and the lower end of the first heat exchange tube nest communicates with the heating cavity.
The inorganic heat superconducting pipe is a heating pipe which is mature in the prior art, and specifically comprises an inorganic heat superconducting heat transfer pipe, an electric heating pipe and a leading-out lead protection pipe which are arranged in the inorganic heat superconducting heat transfer pipe, wherein chambers between the electric heating pipe and the inorganic heat superconducting heat transfer pipe and between the leading-out lead protection pipe and the inorganic heat superconducting heat transfer pipe are filled with inorganic heat superconducting working media.
When the reactor runs, the first heating medium inlet pipe is used for communicating a hot working medium outlet of the reactor; the first heating medium outlet pipe is used for communicating a hot working medium inlet of the reactor; the material outlet pipe is used for communicating with a raw material inlet of the reactor.
When the heating evaporation device is started, raw materials enter the first shell through the material inlet pipe, then enter the heating cavity through the first heat exchange tubes, are heated to a first set temperature, are discharged through the material inlet pipe and then enter the reactor for reaction; when the raw material passes through the heating cavity, the inorganic heat superconducting pipe heats the raw material.
The heat transfer working medium is discharged from a hot working medium outlet of the reactor, enters the inner cavity of the second cylinder through the first heat medium inlet pipe, and heats the raw material flowing through the first heat exchange tubes. And (3) continuously raising the temperature of the heat transfer working medium along with the reaction in the reactor, synchronously reducing the heating power of the inorganic heat superconducting pipe, and stopping heating the inorganic heat superconducting pipe when the temperature of the heat transfer working medium reaches a second set temperature so as to enter normal production.
In the application, the hot working medium heating part is used as a heat exchange area of the heat transfer working medium and the raw material, the electric heating part is used as a raw material heating area during starting, and an inorganic heat superconducting pipe is adopted to directly heat the raw material in the electric heating area. In the prior art, the heat transfer working medium is heated by the external heat exchanger and then exchanges heat with the raw material, the heat exchange efficiency is reduced, the inorganic heat superconducting pipe is adopted to directly heat the raw material in the application, almost no heat energy loss exists, in the process of heating the raw material by the inorganic heat superconducting pipe, the heat energy generated by the reactor is continuously conducted into the heat transfer working medium, the temperature of the heat transfer working medium is continuously increased until the set temperature is reached, at the moment, the heating of the raw material by the inorganic heat superconducting pipe can be stopped, and the raw material is completely heated by the heat energy generated by the reactor. Since the reaction heat generated by the reactor is continuously conducted into the heat transfer working medium from the start of the operation, no waste is caused, and 100% of thermal coupling in the reaction process can be realized.
When the reactor is started, the inorganic heat superconducting pipe is used for heating the raw materials, so that the reaction of the reactor can quickly reach a normal reaction state, the time for the reaction in the reactor to reach the normal operation is 1-2 hours after the reactor is used, and the time for the reaction in the reactor to reach the normal operation is 24-28 hours when the reactor is used in the prior art, so that the time can be saved by 23-27 hours. After the application is adopted, 100% of thermal coupling can be completed by adopting a single reactor, and for part of enterprises which can meet the production requirement only by adopting a single reactor, the purchase cost and the enclosing cost of equipment can be effectively reduced, and the manufacturing cost of products is reduced.
The inorganic heat superconducting pipe is adopted to heat the raw material, so that the electric heating device is not contacted with the raw material, and the safe operation of equipment and production is ensured.
Further, the hot working medium heating part further comprises a second heat exchanging part which is positioned between the first heat exchanging part and the electric heating part;
the second heat exchange part comprises a fourth cylinder body extending along the vertical direction, a second upper tube plate is arranged at the upper end of the fourth cylinder body, a second lower tube plate is arranged at the lower end of the fourth cylinder body, and a plurality of second heat exchange tubes are arranged on the second upper tube plate and the second lower tube plate and penetrate through the second upper tube plate and the second lower tube plate; a second heat medium inlet pipe and a second heat medium outlet pipe which are communicated with the inner cavity of the fourth cylinder are arranged on the fourth cylinder;
The lower end of the second cylinder is hermetically connected with the upper end of the fourth cylinder, and the lower end of the fourth cylinder is hermetically connected with the upper end of the fifth cylinder, so that the lower end of the second cylinder is hermetically connected with the upper end of the fifth cylinder through the fourth cylinder;
form a material mixing chamber between first bottom tube sheet and second top tube sheet, the lower extreme intercommunication this material mixing chamber of first heat transfer tubulation, the upper end intercommunication material mixing chamber of second heat transfer tubulation, the lower extreme intercommunication heating chamber of second heat transfer tubulation makes the lower extreme of first heat transfer tubulation communicate the heating chamber through the second heat transfer tubulation.
When the heat transfer volume is great, need longer heat exchange tube, when the heat exchange tube is longer, homogeneity variation during raw materials heating has add the second heat transfer portion in order to eliminate this drawback to form a compounding chamber between first heat transfer portion and second heat transfer portion, the raw materials enters into this compounding chamber after, carries out the secondary and distributes again, improves the homogeneity of temperature.
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 in an open shape, the upper end of the third cylinder is hermetically connected with the lower end of the second cylinder, the lower end of the third cylinder is hermetically connected with the upper end of the fourth cylinder, and an inner cavity of the third cylinder forms a mixing cavity.
When the third cylinder is not arranged, the lower end of the second cylinder needs to exceed the first lower tube plate downwards or the upper end of the fourth cylinder exceeds the second upper tube plate upwards, so that a mixing cavity is formed between the first lower tube plate and the second upper tube plate, but the first lower tube plate is far away from the lower end of the second cylinder due to arrangement, the first lower tube plate is inconvenient to weld on the second cylinder, the manufacturing quality is affected sometimes, the first lower tube plate needs to adopt a tube plate without a flange, and therefore an additional connecting flange needs to be arranged at the lower end of the second cylinder in addition, and the self-control difficulty of equipment is improved. A similar problem exists when the upper end of the fourth cylinder is positioned upwardly beyond the second upper tube sheet.
After the single-ended third barrel is arranged, the first lower tube plate and the second upper tube plate can adopt tube plates with connecting flanges, and the manufacturing efficiency and the manufacturing quality of equipment are improved.
Furthermore, the first heat exchange tube nest extends into the inner cavity of the first shell after exceeding the first upper tube plate upwards; or the two heat exchange tubes exceed the second upper tube plate upwards and extend into the mixing cavity; or the first heat exchange tube array upwards exceeds the first upper tube plate and then extends into the inner cavity of the first shell, and the second heat exchange tube array upwards exceeds the second upper tube plate and then extends into the mixing cavity.
Preferably, the height of the first heat exchange tube array which is upwards beyond the first upper tube plate is 50-200 mm; the height of the two heat exchange tubes which exceed the second upper tube plate upwards is 50-200 mm.
After the first heat exchange tube nest is upwards beyond the first upper tube plate, an overflow pipe can be formed in the inner cavity of the first shell, liquid is uniformly distributed and uniformly enters the heating tube, and scaling caused by lack of liquid flow of part of the first heat exchange tube nest is prevented.
After the second heat exchange tube nest upwards exceeds the second upper tube plate, a certain amount of raw materials can be stored in the mixing cavity, and the subsequently entering raw materials are mixed with the raw materials stored in the mixing cavity, so that the uniformity of temperature is improved, and the uniformity of the temperature of the subsequently entering raw materials in the reactor is facilitated.
Further, the exhaust pipe is arranged on at least the second cylinder and the fourth cylinder among the first shell, the second cylinder and the fourth cylinder. The exhaust pipes are preferably arranged on the first shell, the second cylinder and the fourth cylinder, when the automobile is driven, the heating evaporation device is filled with air, after exhaust is arranged, when raw materials enter the heating evaporation device, the air in the equipment can be discharged from the exhaust pipes, the feeding speed is accelerated, the exhaust pipes are sealed in time according to the feeding progress, and valves are generally arranged on the exhaust pipes.
The second cylinder and the fourth cylinder are provided with exhaust pipes, otherwise, heat exchange of the heat transfer working medium is influenced, and when the heat transfer working medium operates again, gas in the second cylinder and the fourth cylinder must be removed, otherwise, gas blockage is easily formed, and the heat exchange area is influenced.
Further, the material outlet pipe is arranged at the upper end of the fifth barrel, a distance is reserved between the material outlet pipe and the upper end of the fifth barrel, and the top of the inorganic heat superconducting pipe is not higher than that of the material outlet pipe. Further, the top of the inorganic heat superconducting pipe is lower than the material outlet pipe, and the distance between the top of the inorganic heat superconducting pipe and the lowest point of the material outlet pipe is 70-120 mm.
After the top of the inorganic heat superconducting pipe is not higher than the material outlet pipe, the part of the inorganic heat superconducting pipe, which is positioned in the heating cavity, is completely soaked in the raw material liquid, so that the heat transfer area of the inorganic heat superconducting pipe can be fully utilized, and the top of the inorganic heat superconducting pipe is not higher than the material outlet pipe. After the distance is reserved between the material outlet pipe and the upper end of the fifth cylinder, a gas-liquid separation space can be formed between the liquid level of the liquid raw material in the heating cavity and the upper end of the fifth cylinder, liquid drops carried in the gas-phase raw material can fall down and return to the liquid raw material, and the amount of the liquid raw material entering the reactor is reduced.
Specifically, for convenience of manufacture, the fifth cylinder comprises an upper cylinder and a lower cylinder which are fixedly connected together, wherein the upper cylinder is positioned at the upper side of the lower cylinder, the upper end of the upper cylinder is open, and the upper end of the upper cylinder is formed as the upper end of the fifth cylinder; the upper end of the lower cylinder is provided with a third upper tube plate; the lower end of the lower cylinder is formed into the lower end of a fifth cylinder, and the lower end of the lower cylinder is closed; the third upper tube panel forms the partition.
When the fifth barrel is of an integral structure, the third upper tube plate needs to be installed in the middle of the fifth barrel, so that the third upper tube plate is inconvenient to install.
Further, the first heating medium inlet pipe and the second heating medium inlet pipe are used for communicating a hot working medium outlet of the reactor;
the first heating medium outlet pipe and the second heating medium outlet pipe are used for communicating a hot working medium inlet of the reactor;
the material inlet pipe is used for communicating with a raw material inlet of the reactor;
when the heating evaporation device is started, raw materials enter the first shell through the material inlet pipe, then sequentially pass through the first heat exchange tube array and the second heat exchange tube array and then enter the heating cavity, are heated to a first set temperature, are discharged through the material inlet pipe and then enter the reactor for reaction; when the raw material passes through the heating cavity, the inorganic heat superconducting pipe heats the raw material;
After being discharged from a hot working medium outlet of the reactor, the heat transfer working medium enters an inner cavity of the second cylinder and an inner cavity of the fourth cylinder through the first heat medium inlet pipe and the second heat medium inlet pipe, and the raw materials flowing through the first heat exchange tube nest and the second heat exchange tube nest are heated through the first heat exchange tube nest and the second heat exchange tube nest respectively;
and (3) continuously raising the temperature of the heat transfer working medium along with the reaction in the reactor, synchronously reducing the heating power of the inorganic heat superconducting pipe, and stopping heating the inorganic heat superconducting pipe when the temperature of the heat transfer working medium reaches a second set temperature.
Because in this application, first heat transfer portion and second heat transfer portion are as the heat exchange area of heat transfer working medium and raw materials, and electric heating portion is as the raw materials zone of heating when driving, and at the electric zone of heating, adopt inorganic heat superconducting pipe to directly heat the raw materials moreover. In the prior art, the heat transfer working medium is heated by the temporary heat exchanger and then exchanges heat with the raw material, the heat exchange efficiency is reduced, the inorganic heat superconducting pipe is adopted to directly heat the raw material in the application, almost no heat energy loss exists, in the process of heating the raw material by the inorganic heat superconducting pipe, the heat energy generated by the reactor is continuously conducted into the heat transfer working medium, the temperature of the heat transfer working medium is continuously increased until the set temperature is reached, at the moment, the heating of the raw material by the inorganic heat superconducting pipe can be stopped, and the raw material is heated by the heat energy generated by the reactor completely. Since the reaction heat generated by the reactor is continuously conducted into the heat transfer working medium from the start of the operation, no waste is caused, and 100% of thermal coupling in the reaction process can be realized.
Specifically, the heat transfer working medium is discharged from a hot working medium outlet of the reactor and then divided into two paths, wherein one path enters an inner cavity of the second cylinder through the first heat medium inlet pipe, is discharged through the first heat medium outlet pipe and then returns to the reactor, and the other path enters an inner cavity of the fourth cylinder through the second heat medium inlet pipe, is discharged through the second heat medium outlet pipe and then returns to the reactor; or
The heat transfer working medium is discharged from a hot working medium outlet of the reactor, enters an inner cavity of the fourth cylinder through the second heat medium inlet pipe, is discharged through the second heat medium outlet pipe, enters an inner cavity of the second cylinder through the first heat medium inlet pipe, and is finally discharged through the first heat medium outlet pipe and returns to the reactor;
when the first heat medium inlet pipe is positioned above the first heat medium outlet pipe and the second heat medium inlet pipe is positioned above the second heat medium outlet pipe, the heat transfer working medium is steam;
when the first heat medium inlet pipe is positioned below the first heat medium outlet pipe and the second heat medium inlet pipe is positioned below the second heat medium outlet pipe, the heat transfer working medium is liquid.
The heating mode of the raw materials can be selected by the two heat transfer working media according to different requirements, and corresponding pipelines can be installed according to the two modes at the same time and switched by using valves.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 1.
FIG. 4 is a schematic view of an embodiment of the present invention in connection with a reactor.
Fig. 5 is a schematic diagram of the prior art.
Detailed Description
Referring to fig. 1 to 3, a heating and evaporating apparatus based on inorganic thermal superconducting technology includes a hot working medium heating part and an
The hot working medium heating part comprises a
The feeding
The first
A
The lower end of the
The mixing
The second
A
The lower end of the
The
The upper end of the lower cylinder is provided with a third
The inner cavity of the upper barrel is formed into a heating cavity, and the inner cavity of the lower barrel is formed into a wiring cavity. The inorganic
A
The lower end of the upper cylinder body is also provided with a fourth row of cleaning
A
The first cylinder, the second cylinder, the third cylinder, the fourth cylinder and the fifth cylinder are coaxially arranged.
In this embodiment, the upper end intercommunication inner chamber of first casing of first heat transfer shell and tubelet, and the upper end of first heat transfer shell and tubelet upwards surpass behind the first last tube sheet, stretch into the inner chamber of first casing, in this embodiment, the height that first heat transfer shell and tubelet upwards surpassed first last tube sheet is 120 mm. The lower end of the first heat exchange tube is communicated with the mixing cavity.
The upper end of the second heat exchange tube array is communicated with the mixing cavity, and the upper end of the second heat exchange tube array upwards exceeds the second upper tube plate and then extends into the mixing cavity. In this embodiment, the height of the second heat exchange tubes above the second upper tube sheet is 180 mm. The lower end of the second heat exchange tube is communicated with the heating cavity.
In this embodiment, the fifth cylinder is divided into two parts, i.e., an upper cylinder and a lower cylinder, which is only convenient for installing the third
The lower end of the first cylinder is hermetically connected with the upper end of the second cylinder, the lower end of the second cylinder is hermetically connected with the upper end of the fourth cylinder, and a mixing cavity is formed between the first lower tube plate and the second upper tube plate;
in this embodiment, a third cylinder is specifically provided to form the mixing chamber, it being understood that in other embodiments, the third cylinder may be eliminated and the second cylinder may be lowered beyond the first bottom tube plate to form a first chamber, which serves as the mixing chamber.
Or the fourth cylinder body is upwards beyond the second upper tube plate to form a second chamber which is used as a mixing cavity. Or the second cylinder body is downwards beyond the first lower tube plate, and simultaneously the fourth cylinder body is upwards beyond 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 into a mixing cavity.
In this embodiment, the material outlet pipe is disposed at the upper end of the fifth cylinder, and a distance is provided between the material outlet pipe and the upper end of the fifth cylinder. The top of the inorganic heat superconducting pipe is lower than the material outlet pipe, and the distance between the top of the inorganic heat superconducting pipe and the lowest point of the material outlet pipe is 100 mm.
Referring to fig. 4, in the present embodiment, the first heating medium inlet pipe and the second heating medium inlet pipe are used to communicate with the hot
When the heating evaporation device is started, raw materials enter the first shell through the material inlet pipe, then sequentially pass through the first heat exchange tube array and the second heat exchange tube array and then enter the heating cavity, are heated to a first set temperature, are discharged through the material inlet pipe and then enter the reactor for reaction; when the raw material passes through the heating cavity, the inorganic heat superconducting pipe heats the raw material.
And after being discharged from a hot working medium outlet of the reactor, the heat transfer working medium enters an inner cavity of the second cylinder and an inner cavity of the fourth cylinder through the first heat medium inlet pipe and the second heat medium inlet pipe, and the raw materials flowing through the first heat exchange tube array and the second heat exchange tube array are heated through the first heat exchange tube array and the second heat exchange tube array respectively.
And (3) continuously raising the temperature of the heat transfer working medium along with the reaction in the reactor, synchronously reducing the heating power of the inorganic heat superconducting pipe, and stopping heating the inorganic heat superconducting pipe when the temperature of the heat transfer working medium reaches a second set temperature.
In this embodiment, the heat transfer working medium is discharged from the hot working medium outlet of the reactor, enters the inner cavity of the fourth cylinder through the second heat medium inlet pipe, is discharged through the second heat medium outlet pipe, enters the inner cavity of the second cylinder through the first heat medium inlet pipe, and is finally discharged through the first heat medium outlet pipe and returns to the reactor.
In this embodiment, the heat transfer working medium continuously passes through the inner cavity of the fourth cylinder and the inner cavity of the second cylinder, and the inner cavity of the fourth cylinder and the inner cavity of the second cylinder are in series connection.
It is understood that in other embodiments, the heat transfer working medium discharged from the hot working medium outlet of the reactor may be divided into two paths, wherein one path enters the inner cavity of the second cylinder through the first heat medium inlet pipe, and then is discharged through the first heat medium outlet pipe and then returns to the reactor, and the other path 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 returns to the reactor, so that the inner cavity of the fourth cylinder and the inner cavity of the second cylinder are in parallel.
The inorganic heat superconducting pipe is a heating pipe which is mature in the prior art, and specifically comprises an inorganic heat superconducting heat transfer pipe, an electric heating pipe and a leading-out lead protection pipe which are arranged in the inorganic heat superconducting heat transfer pipe, wherein chambers between the electric heating pipe and the inorganic heat superconducting heat transfer pipe and between the leading-out lead protection pipe and the inorganic heat superconducting heat transfer pipe are filled with inorganic heat superconducting working media.
In this embodiment, two heat exchanging portions, namely the first heat exchanging portion and the second heat exchanging portion, are arranged, and the mixing portion is arranged between the two heat exchanging portions, it can be understood that in other embodiments, when the heat exchanging amount is small, the second heat exchanging portion and the mixing portion can be omitted, and the first heat exchanging portion is directly connected to the electric heating portion.
In this embodiment, the heat transfer working medium is heat transfer 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.
It is 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.
Referring to fig. 4, when the present embodiment is started, the liquid
After being discharged from the hot working
Because the inorganic heat superconducting pipe is used for directly heating the raw material, almost no heat energy loss exists, in the process of heating the raw material by using the inorganic heat superconducting pipe, the heat energy generated by the reactor is continuously conducted into the heat conducting oil, the temperature of the heat conducting oil is continuously increased until the set temperature is reached, at the moment, the heating of the raw material by the inorganic heat superconducting pipe can be stopped, and the raw material is completely heated by the heat energy generated by the reactor. Since the reaction heat generated by the reactor is continuously conducted into the heat conducting oil from the start of the operation, no waste is caused, and 100% of thermal coupling in the reaction process can be realized.
Referring to fig. 5, in the prior art, a raw material D811 enters a reactor D822 only through a preheater 821, and a product 812 produced by the reaction enters a next process. After being discharged out of the reactor D, the heat transfer working medium firstly enters the external heater 824 under the driving of the second circulating pump 823, the external heater 824 generally adopts a steam heater or an electric heater, the heat transfer working medium is heated by the external heater and then enters the preheater 821 to heat the raw material D, the heat transfer working medium after heating the raw material D returns to the reactor D, and the reaction heat generated by the reactor D is gradually transferred into the heat transfer working medium. When the production is started, in order to accelerate the speed of normal production, the heat transfer working medium needs to be heated to a set temperature firstly, then the raw material D is heated, the heating quantity of the external heater to the heat transfer working medium is gradually reduced along with the progress of the reaction, and the heating of the external heater to the heat transfer working medium is known to be stopped completely.
Because the temperature of the raw material D entering the reactor D is to be ensured, when the vehicle is started, the heat transfer medium needs to be operated in the whole system first, and the heat transfer working medium is heated by the external heater, until the heat transfer working medium is heated to a set temperature, the raw material D cannot enter the preheater 821. The preheating mode prolongs the driving time of the equipment.
When the method is adopted, the inorganic heat superconducting pipe is adopted to directly heat the raw materials during driving, so that the raw materials can quickly reach the set temperature, the reaction of the reactor can quickly reach the normal reaction state, the time for the reaction in the reactor to reach the normal operation is 1.3 hours after the method is adopted, and the time for the reaction in the reactor to reach the normal operation is 24-28 hours when the prior art is adopted, so that the time can be saved by more than 22 hours.
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