CN107189766B - Device and method for preparing and transferring molten salt in inert environment - Google Patents
Device and method for preparing and transferring molten salt in inert environment Download PDFInfo
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- CN107189766B CN107189766B CN201710427682.8A CN201710427682A CN107189766B CN 107189766 B CN107189766 B CN 107189766B CN 201710427682 A CN201710427682 A CN 201710427682A CN 107189766 B CN107189766 B CN 107189766B
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- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
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Abstract
The invention discloses a device and a method for preparing and transferring molten salt in an inert environment. The method comprises the following steps: transferring the fused salt from the transition cabin to inert atmosphere equipment, connecting and sealing the fused salt heating tank with the middle cabin, respectively replacing the middle cabin and the fused salt heating tank with inert atmosphere, opening a cabin door and a heating tank top cover, communicating the inert atmosphere equipment, the middle cabin and the fused salt heating tank, filling the fused salt into the fused salt heating tank, heating and melting, closing the heating tank top cover after uniformly mixing, closing the cabin door, and separating the fused salt heating tank from the middle cabin. The method can realize molten salt preparation and liquid state transfer under inert atmosphere.
Description
Technical Field
The invention relates to a device and a method for preparing and transferring molten salt in an inert environment.
Background
Molten salt has become a mature heat transfer and storage medium due to its characteristics of wide application temperature range, low vapor pressure, low viscosity, good stability, low cost, and the like, and thus, the preparation of molten salt has received much attention from researchers. In the preparation and transportation processes, the air atmosphere causes certain pollution to the molten salt, so that the quality of the obtained molten salt is low.
The preparation of the molten salt is completed under high-temperature melting conditions. After preparation, due to the high temperature, the transportation and the acquisition of the product under the inert atmosphere are difficult to realize. Although the molten salt can be transported and treated after being cooled, the required cooling time is long, the cooled massive solid molten salt is difficult to treat, and if the molten salt needs to be reheated, the energy consumption is increased, and the like, so that the method has many inconveniences. In general, the preparation and transportation of the molten salt are completed by different devices, for example, the molten salt is transferred to the device B for transportation after the preparation of the molten salt is completed in the device A, and the operation is complex. In order to simplify the operation, reduce the cost and improve the efficiency, an integrated device which can realize the preparation of the molten salt and can complete the transportation is needed.
Since there are no devices and methods meeting the requirements in the market, the problem needs to be solved.
Disclosure of Invention
The invention aims to solve the technical problems that in the prior art, the preparation and transfer process of molten salt is easily influenced by air atmosphere, and finally the molten salt is polluted, the quality is lower, the transfer and acquisition of products are more difficult, the operation process is complex and the like, and provides a device and a method for preparing and transferring the molten salt in an inert environment. The transfer device is connected with the inert atmosphere equipment and the molten salt heating tank through the middle cabin, so that molten salt preparation, melting and uniform mixing in the inert atmosphere are realized, the transfer device is an integrated device for molten salt preparation and transfer, the molten salt tank can be separated, the inert atmosphere environment is protected from being damaged in the separation process, the molten salt liquid transfer can be realized, the operation is simple and convenient, the molten salt is isolated from the air in the whole process, the pollution is avoided, and the high-quality molten salt is obtained more conveniently. And the production cost is reduced, and the efficiency is improved.
The invention provides a device for preparing and transferring molten salt in an inert environment, which comprises an inert atmosphere device, an intermediate chamber and a molten salt heating tank; the inert atmosphere equipment is provided with a transition cabin for providing molten salt raw materials for the inert atmosphere equipment, and the lower part of the inert atmosphere equipment is also provided with a cabin door for being in openable, closable and sealed connection with an upper connector of the middle cabin and enclosing to form an inert atmosphere space; the upper part of the molten salt heating tank is annularly provided with a cabin interface which is used for being in sealing connection with the lower interface of the middle cabin in an openable and closable manner, and the top of the molten salt heating tank is also provided with a heating tank top cover which is used for realizing the sealing of the molten salt heating tank; the upper interface and the lower interface of the middle cabin are respectively matched with the cabin door and the cabin interface of the molten salt heating tank to detachably enclose a hollow sealed space; and the upper part of the molten salt heating tank penetrates through the lower connector of the middle cabin from bottom to top and extends into the hollow sealed space.
In the present invention, the transition compartment is a glove box type transition compartment as is conventional in the art.
In the invention, preferably, an interface for connecting a stirrer is arranged in the center of the top cover of the heating tank in a penetrating manner.
In the invention, preferably, a discharge pipe is further arranged on the heating tank top cover in a penetrating manner. Preferably, the discharge pipe extends into the bottom of the cavity of the molten salt heating tank.
In the present invention, preferably, the molten salt heating tank is provided with a first vacuum-pumping inert gas-filled pipeline on a side wall not included in the intermediate chamber.
In the present invention, preferably, heaters are further disposed around the outer walls of the molten salt heating tank below, in the middle of, and at the bottom of the first pipeline.
In the invention, a hoisting tool is preferably further arranged at the center of the inner wall of the top of the inert atmosphere equipment, the hoisting tool and the molten salt heating tank are coaxially arranged and can move along the horizontal direction and the vertical direction of the inert atmosphere equipment, and the hoisting tool is used for loading and unloading the cabin door and the top cover of the heating tank and transferring the molten salt.
In the present invention, preferably, the diameter of the intermediate chamber is larger than the diameter of the molten salt heating tank.
In the present invention, it is preferable that a second vacuum-pumping and inert gas-filling pipe is provided on a side wall of the intermediate chamber at a position not included in the inert gas atmosphere facility.
In the invention, the cabin door of the inert atmosphere equipment and the upper interface of the intermediate cabin are preferably connected in a sealing manner by a rubber flange.
In the invention, the cabin interface of the molten salt heating tank and the lower interface of the middle cabin are preferably butted through a rubber flange.
In the present invention, the heating tank top cover and the tank body of the molten salt heating tank are preferably sealed by rubber flanges.
The invention also provides a method for preparing and transferring the molten salt in the inert environment, which is carried out by adopting the device for preparing and transferring the molten salt in the inert environment, and the method comprises the following steps:
S1closing a cabin door at the lower part of the inert atmosphere equipment, and transferring the molten salt from the transition cabin into the inert atmosphere equipment;
S2connecting and sealing the molten salt heating tank and the intermediate chamber to enable the intermediate chamber to enclose a hollow sealed space;
S3respectively replacing the interiors of the intermediate chamber and the molten salt heating tank with inert atmosphere;
S4opening a cabin door at the lower part of the inert atmosphere equipment, opening a top cover of the heating tank to communicate the inert atmosphere equipment, the intermediate cabin and the molten salt heating tank, and filling the molten salt into the molten salt heating tank;
S5heating and melting the molten salt, and uniformly mixing;
S6after the molten salt is completely melted, covering the top cover of the heating tank to realize the sealing of the molten salt heating tank;
S7closing the cabin door of the lower part of the inert atmosphere device;
S8and separating the molten salt heating tank from the intermediate cabin, and transporting the molten salt heating tank to a required place.
Step S5The heating and melting operation is a heating and melting operation known in the art, and the heating and melting temperature is preferably 900 ℃ or less.
Step S5The mixing is preferably performed by using a stirrer, and the stirring speed of the stirrer is preferably less than 500 r/min.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
the invention realizes the preparation, melting and uniform mixing of the molten salt in the inert atmosphere, can separate the molten salt tank, protects the inert atmosphere environment from being damaged in the separation process, can realize the liquid state transfer of the molten salt, and has simple and convenient operation process. The whole process is isolated from air, so that pollution is avoided, high-quality molten salt is obtained more conveniently, production cost is reduced, and efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of an inert environment molten salt preparation and transportation device in embodiment 1 of the invention.
FIG. 2 shows step S in example 2 of the present invention1Schematic representation of (a).
FIG. 3 shows step S in example 2 of the present invention2Schematic representation of (a).
FIG. 4 shows step S in example 2 of the present invention3Schematic representation of (a).
The reference numerals are explained below:
Cabin door 12
Hoisting tool 13
Molten salt heating tank 3
Heating can top 32
Stirrer 36
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
As shown in FIG. 1, the embodiment provides an inert environment molten salt preparation and transportation device, which comprises an inert atmosphere device 1, an intermediate chamber 2 and a molten salt heating tank 3. The inert atmosphere equipment 1 is provided with a transition cabin 11 for providing the inert atmosphere equipment 1 with molten salt raw materials, and the lower part of the inert atmosphere equipment 1 is also provided with a cabin door 12 for being in openable and closable sealing connection with an upper interface 21 of the middle cabin 2 and enclosing into an inert atmosphere space. The upper portion of fused salt heating tank 3 encircles and is equipped with a cabin interface 31 for with the lower part interface 22 sealing connection of middle cabin 2 can open and shut, the top of fused salt heating tank 3 still is equipped with heating tank top cap 32, is used for realizing fused salt heating tank 3's is sealed. The upper connector 21 and the lower connector 22 of the middle cabin 2 are respectively matched with the cabin door 12 and the cabin connector 31 of the molten salt heating tank 3 to detachably enclose a hollow sealed space. The upper part of the molten salt heating tank 3 penetrates through the lower connector 22 of the middle cabin 2 from bottom to top and extends into the hollow sealed space.
The central position of the heating tank top cover 32 is provided with a port 33 connected with a stirrer 36 in a penetrating way. A discharge pipe 34 is further arranged on the heating tank top cover 32 in a penetrating mode, and the discharge pipe 34 extends into the bottom of the cavity of the molten salt heating tank 3. The molten salt heating tank 3 is provided with a first vacuum-pumping inert gas-filled pipeline 37 on the side wall not included in the intermediate chamber 2. A heater 35 is further arranged on the outer wall of the molten salt heating tank 3 below, in the middle lower part and at the bottom of the first pipeline 37 in an annular mode.
The central position department of the top inner wall of inert atmosphere equipment 1 still is equipped with a lifting device 13, lifting device 13 with molten salt heating tank 3 coaxial setting to can follow inert atmosphere equipment 1's horizontal direction and vertical direction removal, lifting device 13 is used for the loading and unloading and the molten salt of cabin door 12, heating tank top cap 32 and agitator 36 shift.
The diameter of the intermediate chamber 2 is larger than that of the molten salt heating tank 3. On the side wall of the intermediate chamber 2, a second vacuum-pumping inert gas-filled line 23 is provided at a position not contained in the inert gas atmosphere device 1.
The chamber door 12 of the inert atmosphere device 1 is sealingly connected to the upper connection 21 of the intermediate chamber 2 by a rubber flange. The cabin interface 31 of the molten salt heating tank 3 is butted with the lower interface 21 of the middle cabin 2 through a rubber flange. The heating tank top cover 32 and the tank body of the molten salt heating tank 3 are sealed through rubber flanges.
Example 2
The embodiment is a specific embodiment of performing inert environment molten salt preparation and transportation by using the device for inert environment molten salt preparation and transportation in embodiment 1, and the method comprises the following steps:
S1the lower cabin door 12 of the inert atmosphere device 1 was closed, and 9.9kg of FLiNaK salt and 100g of NdF were charged3The salt is transferred from the transition compartment 11 to the inside of the inert atmosphere device 1 (as shown in fig. 2);
S2connecting and sealing the molten salt heating tank 3 and the intermediate chamber 2, and replacing the atmospheres inside the molten salt heating tank 3 and the intermediate chamber 2 with inert gases by vacuumizing the chambers and filling the chambers with inert gases (as shown in fig. 3);
S3the cabin door 12 is opened by using the hoisting tool 13, the heating tank top cover 32 is opened, and FLiNaK and NdF are put in3Molten salt is filled into the tank body of the molten salt heating tank 3, a stirrer 36 is inserted, and the heating tank top cover 32 is covered and sealed (as shown in figure 4);
S4starting water cooling, starting a heater 35 to heat the molten salt to 600 ℃, and starting a stirrer 36 after the molten salt is molten, wherein the rotating speed is 100 r/min;
S5and the stirrer 36 is closed after 4 hours of melt stirring. Using the lifting tool 13 to lift the agitator 36 out, cover the heating tank top cover 32 and seal;
S6closing and sealing the cabin door 12 by using a hoisting tool 13;
S7heating the molten saltThe tank 3 is separated from the intermediate chamber 2, and the molten salt heating tank is transported to a required place;
S8and pressing out the molten salt to a receiving device by a gas pressure method.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. A device for preparing and transferring molten salt in inert environment is characterized by comprising an inert atmosphere device, an intermediate chamber and a molten salt heating tank; the inert atmosphere equipment is provided with a transition cabin for providing molten salt raw materials for the inert atmosphere equipment, and the lower part of the inert atmosphere equipment is also provided with a cabin door for being in openable, closable and sealed connection with an upper connector of the middle cabin and enclosing to form an inert atmosphere space; the upper part of the molten salt heating tank is annularly provided with a cabin interface which is used for being in sealing connection with the lower interface of the middle cabin in an openable and closable manner, and the top of the molten salt heating tank is also provided with a heating tank top cover which is used for realizing the sealing of the molten salt heating tank; the upper interface and the lower interface of the middle cabin are respectively matched with the cabin door and the cabin interface of the molten salt heating tank to detachably enclose a hollow sealed space; and the upper part of the molten salt heating tank penetrates through the lower connector of the middle cabin from bottom to top and extends into the hollow sealed space.
2. The apparatus of claim 1, wherein the transition compartment is a glove box type transition compartment.
3. The device as claimed in claim 1, wherein a connector connected with an agitator is arranged in the center of the top cover of the heating tank in a penetrating manner, and a discharge pipe is arranged on the top cover of the heating tank in a penetrating manner and extends into the bottom of the cavity of the molten salt heating tank.
4. The apparatus of claim 1, wherein the molten salt heating tank is provided with a first vacuum-pumping inert gas-filled pipeline on a side wall not contained by the intermediate chamber, and a heater is arranged on the outer wall of the molten salt heating tank below the first pipeline in a surrounding manner, and the heater is positioned at the middle lower part and the bottom of the molten salt heating tank.
5. The apparatus of claim 1, wherein a lifting tool is further provided at the center of the top inner wall of the inert atmosphere device, the lifting tool is coaxially arranged with the molten salt heating tank and can move along the horizontal direction and the vertical direction of the inert atmosphere device, and the lifting tool is used for loading and unloading the cabin door and the heating tank top cover and transferring the molten salt.
6. The apparatus of claim 1, wherein the diameter of the intermediate chamber is larger than the diameter of the molten salt heating tank.
7. The apparatus of claim 1, wherein a second line for evacuating and filling with inert gas is provided on a side wall of the intermediate chamber at a position not contained by the inert gas atmosphere device.
8. The apparatus of claim 1, wherein the chamber door of the inert atmosphere device is sealingly connected to the upper interface of the intermediate chamber by a rubber flange; the cabin interface of the molten salt heating tank is butted with the lower interface of the middle cabin through a rubber flange; the top cover of the heating tank and the tank body of the molten salt heating tank are sealed through rubber flanges.
9. A method for preparing and transporting molten salt in inert environment, which is carried out by adopting the device as claimed in any one of claims 1 to 8, and comprises the following steps:
S1the cabin door of the lower part of the inert atmosphere device is closed, and molten salt is transferred from the transition cabin into the inert atmosphere device;
S2connecting and sealing the molten salt heating tank and the intermediate chamber to enable the intermediate chamber to enclose a hollow sealed space;
S3respectively replacing the interiors of the intermediate chamber and the molten salt heating tank with inert atmosphere;
S4opening a cabin door at the lower part of the inert atmosphere equipment, opening a top cover of the heating tank to communicate the inert atmosphere equipment, the intermediate cabin and the molten salt heating tank, and filling the molten salt into the molten salt heating tank;
S5heating and melting the molten salt, and uniformly mixing;
S6after the molten salt is completely melted, covering the top cover of the heating tank to realize the sealing of the molten salt heating tank;
S7closing the cabin door of the lower part of the inert atmosphere device;
S8and separating the molten salt heating tank from the intermediate cabin, and transporting the molten salt heating tank to a required place.
10. The method of claim 9, wherein step S5Wherein the temperature of the heating and melting is less than or equal to 900 ℃; step S5And uniformly mixing by using a stirrer, wherein the stirring speed of the stirrer is less than 500 r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710427682.8A CN107189766B (en) | 2017-06-08 | 2017-06-08 | Device and method for preparing and transferring molten salt in inert environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710427682.8A CN107189766B (en) | 2017-06-08 | 2017-06-08 | Device and method for preparing and transferring molten salt in inert environment |
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| CN107189766B true CN107189766B (en) | 2020-12-11 |
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| CN110578868B (en) * | 2019-09-30 | 2021-10-22 | 中国科学院上海应用物理研究所 | Closed hot fluid transfer system and hot fluid transfer method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19913190A1 (en) * | 1999-03-24 | 2000-09-28 | Merck Patent Gmbh | Device and method for producing molten salts and their use |
| US20110294083A1 (en) * | 2008-12-29 | 2011-12-01 | Tate & Lyle Technology Limited | Molten Salt Treatment System and Process |
| US9101896B2 (en) * | 2010-07-09 | 2015-08-11 | Sri International | High temperature decomposition of complex precursor salts in a molten salt |
| CN203075934U (en) * | 2013-01-29 | 2013-07-24 | 中国科学院上海应用物理研究所 | Reactor and reaction system comprising same |
| CN203874765U (en) * | 2014-04-04 | 2014-10-15 | 金发科技股份有限公司 | Heating and cooling system taking fused salt as heat carrier |
| CN103933916A (en) * | 2014-04-04 | 2014-07-23 | 金发科技股份有限公司 | Heating-cooling method and heating-cooling system utilizing fused salt as carrier |
| CN105347041B (en) * | 2014-08-21 | 2019-12-06 | 上海联和日环能源科技有限公司 | Molten salt transportation method and equipment |
| CN204619949U (en) * | 2015-05-15 | 2015-09-09 | 南京科技职业学院 | A kind of high-temperature molten salt pump refrigerating device |
| CN204841649U (en) * | 2015-08-14 | 2015-12-09 | 中国科学院上海有机化学研究所 | A retort for preparing fluoride fused salt |
| CN105424740B (en) * | 2015-12-10 | 2018-04-17 | 西安交通大学 | A kind of fused salt heat exchanging/heat accumulation equipment performance testing device |
| CN105719712B (en) * | 2016-02-02 | 2018-03-13 | 中国原子能科学研究院 | A kind of sandwich-type inert gas shielding hot cell |
| CN106769450B (en) * | 2016-11-29 | 2019-05-03 | 中国科学院上海应用物理研究所 | Fused salt environmental mechanics performance testing device, system and method |
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