CN110862099A - Foreign gas removing device for liquid ammonia - Google Patents
Foreign gas removing device for liquid ammonia Download PDFInfo
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- CN110862099A CN110862099A CN201911152533.0A CN201911152533A CN110862099A CN 110862099 A CN110862099 A CN 110862099A CN 201911152533 A CN201911152533 A CN 201911152533A CN 110862099 A CN110862099 A CN 110862099A
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- Prior art keywords
- liquid ammonia
- storage tank
- ammonia
- impurity gas
- exhaust line
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 173
- 239000007789 gas Substances 0.000 claims abstract description 84
- 239000012535 impurity Substances 0.000 claims abstract description 79
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 239000012530 fluid Substances 0.000 claims abstract description 37
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 21
- 238000000746 purification Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 239000000872 buffer Substances 0.000 abstract description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 229910002601 GaN Inorganic materials 0.000 description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 229910002090 carbon oxide Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- CCGKOQOJPYTBIH-UHFFFAOYSA-N ethenone Chemical compound C=C=O CCGKOQOJPYTBIH-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- -1 ethylene, propylene Chemical group 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/024—Purification
Abstract
The invention relates to a device for removing impurity gases in liquid ammonia, which comprises a cooling tank, a high-pressure low-temperature storage tank, an exhaust pipeline and a temporary storage tank, wherein the exhaust pipeline is positioned in the cooling tank and is connected with the high-pressure low-temperature storage tank and the temporary storage tank. The high-pressure low-temperature storage tank is used for storing liquid ammonia, wherein a small amount of impurity gas exists in the liquid ammonia. When ammonia and impurity gas are conveyed to the exhaust pipeline from the high-pressure low-temperature storage tank, the low-temperature fluid in the cooling tank can absorb the heat of the exhaust pipeline, so that the ammonia is liquefied into liquid ammonia and flows back to the high-pressure low-temperature storage tank, and the impurity gas can be conveyed to the outside through the exhaust pipeline. In addition, a portion of the liquid ammonia may be supplied to the buffer tank and from there back to the high-pressure cryogenic storage tank via the exhaust line. By using the device for removing the impurity gas in the liquid ammonia, the impurity gas dissolved in the liquid ammonia can be effectively removed, and the consumption of the liquid ammonia in the treatment process is reduced.
Description
Technical Field
The invention relates to a device for removing impurity gas in liquid ammonia, which can effectively remove the impurity gas dissolved in the liquid ammonia and can reduce the consumption of the liquid ammonia in the treatment process.
Background
Ammonia is an important material in semiconductor manufacturing, for example, Light Emitting Diode (LED), pure ammonia is an important material for manufacturing gallium nitride crystal of LED, and although pure ammonia used in LED factories is above 6N5 (99.99995%), pure ammonia still contains trace organic substances, such as acetone, isopropanol, methane, ethane, propane, ethylene, propylene, etc. When an LED factory synthesizes gallium nitride by an MOCVD process at a high temperature (750-1050 ℃), organic matters are cracked into derived impurities such as alkanes, alkenes, carbon monoxide, carbon dioxide, carbon particles, ketene and the like.
When 100 kg of pure ammonia is supplied to the LED process, 80 kg of ammonia is discharged from the LED process, and the concentration of ammonia discharged from the LED process is about 10% to 15%, and the ammonia includes hydrogen, nitrogen, methane, trace gases (carbon monoxide, carbon dioxide, ketene) and particles (carbon particles and metal gallium), and the discharged ammonia is generally regarded as waste and is not used.
In order to reduce environmental pollution, some facilities will increase the concentration and purify ammonia water to produce pure ammonia and recycle it for reuse. However, the treated ammonia gas is often mixed with other impurity gases, such as hydrogen (H2), nitrogen (N2), carbon oxides (CxOy), Total Hydrocarbons (THC), argon (Ar), water (H2O), and hydrocarbons (CxHy). When the ammonia gas is pressurized and cooled into liquid ammonia, the impurity gases are dissolved in the liquid ammonia and the purity of the liquid ammonia is reduced.
Disclosure of Invention
The invention provides a device for removing impurity gas in liquid ammonia, which is mainly used for removing the impurity gas dissolved in the liquid ammonia and can effectively reduce the consumption of the liquid ammonia in the treatment process.
The invention provides a device for removing impurity gases in liquid ammonia, which is mainly characterized in that a high-pressure low-temperature storage tank is connected with an exhaust pipeline, and the exhaust pipeline is arranged in a cooling tank. The high-pressure low-temperature storage tank is used for storing liquid ammonia, wherein a small amount of impurity gas is dissolved in the liquid ammonia. The ammonia and the impurity gas leave the liquid ammonia and are conveyed into the exhaust pipeline, the low-temperature fluid in the cooling tank absorbs heat from the exhaust pipeline in a heat conduction mode, the temperature of the ammonia and the impurity gas in the exhaust pipeline is reduced, the ammonia is condensed on the pipe wall of the exhaust pipeline, and the impurity gas is output through the exhaust pipeline.
The invention provides a device for removing impurity gases from liquid ammonia, wherein an exhaust pipeline is connected with a temporary storage tank, so that part of liquid ammonia is conveyed into the temporary storage tank for temporary storage and then flows back into a storage tank from the temporary storage tank through the exhaust pipeline.
The invention provides a device for removing impurity gases from liquid ammonia, which is mainly characterized in that a high-pressure low-temperature storage tank is connected with a vibration device, and the liquid ammonia in the high-pressure low-temperature storage tank is stirred in a vibration mode, so that the efficiency of the impurity gases leaving the liquid ammonia is improved.
In order to achieve the above object, the present invention provides an apparatus for removing impurity gas from liquid ammonia, comprising: a cooling tank for containing a cryogenic fluid; a high-pressure low-temperature storage tank for storing liquid ammonia and at least one impurity gas; an exhaust line fluidly connected to the high-pressure low-temperature storage tank and disposed in the cooling tank to contact the low-temperature fluid in the cooling tank, wherein an ammonia gas and an impurity gas are separated from the liquid ammonia and transported from the high-pressure low-temperature storage tank to the exhaust line, so that the ammonia gas is condensed on an inner surface of the exhaust line to form liquid ammonia and flows back to the high-pressure low-temperature storage tank via the exhaust line, and the impurity gas is transported to the outside via the exhaust line; and a temporary storage tank connected with the exhaust pipeline and positioned in the cooling tank and contacted with the cryogenic fluid in the cooling tank, wherein the sectional area of the temporary storage tank is larger than that of the exhaust pipeline and is used for temporarily storing the liquid ammonia transmitted by the exhaust pipeline.
The foreign gas removing device for the liquid ammonia comprises a vibration unit connected with the high-pressure low-temperature storage tank, and vibrates or stirs the liquid ammonia in the high-pressure low-temperature storage tank.
The device for removing impurity gas in liquid ammonia comprises a vibration unit, a magnetic stirrer or a knocker.
The device for removing the impurity gas of the liquid ammonia is characterized in that the cooling tank is connected with at least one low-temperature fluid input pipe and one low-temperature fluid output pipe, and the low-temperature fluid enters the cooling tank from the low-temperature fluid input pipe and is output out of the cooling tank from the low-temperature fluid output pipe.
The device for removing the impurity gas of the liquid ammonia comprises at least one input pipeline which is positioned in a cooling tank and is in fluid connection with a high-pressure low-temperature storage tank.
The device for removing the impure gas of the liquid ammonia comprises an ammonia gas purification device connected with an input pipeline, and the purified ammonia gas and the impure gas are conveyed to a high-pressure low-temperature storage tank through the input pipeline.
The device for removing the impurity gas of the liquid ammonia comprises a pump connected with an ammonia purification device and an input pipeline.
The device for removing the impurity gas in the liquid ammonia is characterized in that the input pipeline of the exhaust pipeline is a spiral pipeline.
The device for removing impurity gas in liquid ammonia is characterized in that the temperature of the low-temperature fluid in the cooling tank is lower than 3 ℃.
The device for removing the impurity gas in the liquid ammonia is characterized in that the pressure of the high-pressure low-temperature storage tank is greater than five atmospheres, and the temperature is lower than 3 ℃.
The device for removing the impurity gas in the liquid ammonia comprises a valve connected with an exhaust pipeline, and the exhaust pipeline is opened or closed to be connected with a high-pressure low-temperature storage tank.
Drawings
FIG. 1 is a schematic view showing the structural connection of an embodiment of an apparatus for removing impurity gas from liquid ammonia according to the present invention.
FIG. 2 is a schematic view showing the structural connection of an exhaust line and a temporary storage tank of the apparatus for removing impurity gas from liquid ammonia according to an embodiment of the present invention.
FIG. 3 is a schematic view showing the structural connection of still another embodiment of the apparatus for removing impurity gas from liquid ammonia according to the present invention.
Description of the main component symbols:
10 foreign gas removing device for liquid ammonia
11 cooling tank
111 cryogenic fluid feed line
113 cryogenic fluid delivery pipe
12 liquid ammonia
121 impurity gas
13 high-pressure low-temperature storage tank
14 cryogenic fluid
15 exhaust line
151 valve
17 temporary storage tank
19 vibration unit
20 liquid ammonia impurity gas removing device
21 ammonia purification device
23 input line
25 pump
A1 cross sectional area
A2 cross sectional area
Detailed Description
Fig. 1 is a schematic structural connection diagram of an embodiment of an apparatus for removing impurity gases from liquid ammonia according to the present invention. As shown in the figure, the apparatus 10 for removing impurity gases from liquid ammonia of the present invention includes a cooling tank 11, a high-pressure low-temperature storage tank 13, an exhaust line 15 and a temporary storage tank 17, wherein the exhaust line 15 and the temporary storage tank 17 are located in the cooling tank 11, and the exhaust line 15 is fluidly connected to the high-pressure low-temperature storage tank 13 and the temporary storage tank 17.
The high-pressure cryogenic storage tank 13 is used for storing liquid ammonia 12, wherein at least one impurity gas 121 is dissolved in the liquid ammonia 12. In practical applications, the pressure in the high-pressure low-temperature storage tank 13 is greater than five atmospheres, and the temperature in the high-pressure low-temperature storage tank 13 is less than 3 ℃, so that the ammonia gas is stored in the high-pressure low-temperature storage tank 13 in a liquid state.
The impurity gas 121 may include hydrogen (H2), nitrogen (N2), carbon oxide (CxOy), Total Hydrocarbon (THC), argon (Ar), water (H2O), hydrocarbon (CxHy), etc., and when the temperature in the high-pressure low-temperature storage tank 13 is about 3 degrees celsius and the pressure is about five atmospheres, it is not enough to liquefy the impurity gas 121, but it may dissolve the impurity gas 121 in the liquid ammonia 12 and reduce the purity of the liquid ammonia 12.
The cooling tank 11 is configured to contain a cryogenic fluid 14, for example the cryogenic fluid 14 may be water having a temperature of less than 3 degrees celsius. In one embodiment of the present invention, the cooling tank 11 comprises a cryogenic fluid inlet pipe 111 and a cryogenic fluid outlet pipe 113, wherein the cryogenic fluid 14 can enter the cooling tank 11 through the cryogenic fluid inlet pipe 111 and can be discharged out of the cooling tank 11 through the cryogenic fluid outlet pipe 113 to maintain the temperature of the cryogenic fluid 14 in the cooling tank 11.
The vent line 15 and the temporary storage tank 17 are located in the cooling tank 11, wherein the cryogenic fluid 14 in the cooling tank 11 contacts the vent line 15 and the temporary storage tank 17 and absorbs heat from the vent line 15 and the temporary storage tank 17 through heat conduction to lower the temperature in the vent line 15 and the temporary storage tank 17. Generally, the exhaust line 15 may be designed as a coil or a spiral line to effectively reduce the temperature of the ammonia gas and the impurity gas 121 in the exhaust line 15.
In practical applications, the exhaust line 15, the temporary storage tank 17 and the cooling tank 11 are located above the high-pressure low-temperature storage tank 13, wherein the exhaust line 15 may be connected to the top of the high-pressure low-temperature storage tank 13. When the temperature and the pressure in the high-pressure low-temperature storage tank 13 are not changed, the liquid ammonia 12 stored in the high-pressure low-temperature storage tank 13 is in a gas-liquid equilibrium state. When the high-pressure low-temperature storage tank 13 is connected to the exhaust line 15, the ammonia gas and the impurity gas 121 leave the surface of the liquid ammonia 12 and are transported from the high-pressure low-temperature storage tank 13 into the exhaust line 15. In an embodiment of the present invention, a valve 151 may be disposed on the exhaust line 15, and the valve 15 opens or closes the connection between the exhaust line 15 and the high-pressure low-temperature storage tank 13, so that when the valve 151 is opened, ammonia gas and the impurity gas 121 enter the exhaust line 15 from the high-pressure low-temperature storage tank 13.
The cryogenic fluid 12 in the cooling tank 11 absorbs the heat of the ammonia gas and the impurity gas 121 in the exhaust line 15 and reduces the temperature of the ammonia gas and the impurity gas 121 in the exhaust line 15, wherein the ammonia gas condenses on the inner surface of the exhaust line 15 due to the temperature reduction to form liquid ammonia 12 which flows back down to the high-pressure cryogenic storage tank 13 through the exhaust line 15, and the impurity gas 121 is delivered to the outside through the exhaust line 15.
Specifically, ammonia gas condenses as liquid ammonia 12 on the pipe wall of the exhaust line 15, and returns to the high-pressure cryogenic storage tank 13 due to gravity. Since the pipe diameter and the cross-sectional area of the exhaust line 15 are not usually too large, the liquid ammonia 12 condensed on the surface of the exhaust line 15 may block the exhaust line 15 due to capillary phenomenon, so that the liquid ammonia 12 cannot smoothly flow back to the high-pressure low-temperature storage tank 13 along the exhaust line 15.
In addition, the ammonia gas and/or the impurity gas 121 may continue to be transported upward along the exhaust line 15 and transmit an upward thrust to the liquid ammonia 12 condensed on the exhaust line 15, and when the upward thrust of the liquid ammonia 12 acting on the exhaust line 15 is greater than or equal to the gravity, the liquid ammonia 12 in the exhaust line 15 cannot flow back to the cryogenic storage tank 13 along the exhaust line 15. When this occurs, the condensed liquid ammonia 12 in the exhaust line 15 may be transported along the exhaust line 15 to the outside or to another connected device, resulting in a loss of liquid ammonia 12.
To prevent the above problem, the present invention further connects the exhaust line 15 to the temporary storage tank 17, as shown in fig. 2, wherein the sectional area a1 of the temporary storage tank 17 is larger than the sectional area a2 of the exhaust line 15. When this occurs, the liquid ammonia 12 delivered up the vent line 15 will be temporarily stored in the temporary storage tank 17 and not delivered to the outside or another connected device. Since the temporary storage tank 17 is also located in the cooling tank 11 and is in contact with the cryogenic fluid 14 in the cooling tank 11, the liquid ammonia 12 delivered to the temporary storage tank 17 remains in a liquid state. In one embodiment of the present invention, the buffer tank 17 is connected to the exhaust line 15 at both ends, wherein the buffer tank 17 receives the liquid ammonia 12 and the impurity gas 121 from the exhaust line 15 below, and buffers the liquid ammonia 12 and delivers the impurity gas 121 to the exhaust line 15 above.
In addition, when the amount of the liquid ammonia 12 stored in the temporary storage tank 17 reaches a certain amount, or the ammonia gas and/or the impurity gas 121 is no longer delivered from the high-pressure low-temperature storage tank 13 through the exhaust line 15, the liquid ammonia 12 stored in the temporary storage tank 17 will continuously flow back into the high-pressure low-temperature storage tank 13 along the exhaust line 15, thereby effectively reducing the amount of the liquid ammonia 12 consumed in the process of removing the impurity gas.
In one embodiment of the present invention, the high-pressure cryogenic storage tank 13 may be connected to a vibration unit 19, for example, the vibration unit 19 may be an ultrasonic vibration unit, a magnet stirrer, a knocker, or the like. The vibration unit 19 is configured to vibrate the liquid ammonia 12 in the high-pressure cryogenic storage tank 13 to achieve the effects of vibrating and stirring the liquid ammonia 12 and improving the efficiency of the impurity gases 121 leaving the liquid ammonia 12, thereby reducing the time required for removing the impurity gases 121 in the liquid ammonia 12 and effectively removing the impurity gases 121 in the liquid ammonia 12.
Fig. 3 is a schematic structural connection diagram of an apparatus for removing impurity gases from liquid ammonia according to another embodiment of the present invention. As shown in the figure, the apparatus 20 for removing impurity gases from liquid ammonia according to the present invention includes a cooling tank 11, a high-pressure low-temperature storage tank 13, at least one exhaust line 15, at least one input line 23, and a temporary storage tank 17, wherein the exhaust line 15, the input line 23, and the temporary storage tank 17 are located in the cooling tank 11, and the exhaust line 15 and the input line 23 are fluidly connected to the high-pressure low-temperature storage tank 13.
The input line 23 is used to deliver purified ammonia gas to the high pressure cryogenic storage tank 13, wherein the cryogenic fluid 14 in the cooling tank 11 absorbs heat from the input line 23 by heat conduction and lowers the temperature of the ammonia gas in the input line 23. In an embodiment of the present invention, the high-pressure low-temperature storage tank 13 can be connected to an ammonia gas purification device 21 through an input line 23, wherein the ammonia gas purification device 21 is configured to generate purified ammonia gas and a small amount of impurity gas 121, and the ammonia gas and the impurity gas 121 are transported to the high-pressure low-temperature storage tank 13 through the input line 23.
In practical applications, the pump 25 can be connected to the ammonia purification device 21 and the input line 23, and can deliver ammonia gas to the input line 23 and the high-pressure low-temperature storage tank 13 to increase the pressure in the input line 23 and the high-pressure low-temperature storage tank 13, so that ammonia gas is condensed into liquid ammonia 12 and flows into the high-pressure low-temperature storage tank 13, for example, the temperature of the high-pressure low-temperature storage tank 13 and the input line 23 is about 3 ℃ or less, and the pressure is about greater than five atmospheres. In the process of liquefying ammonia gas into liquid ammonia 12, the impurity gas 121 originally mixed in ammonia gas dissolves in the liquid ammonia 12.
When the ammonia gas and the impurity gas 121 are transferred from the high-pressure low-temperature storage tank 13 to the exhaust line 15, the low-temperature fluid 14 in the cooling tank 11 absorbs heat from the exhaust line 15 and lowers the temperature of the ammonia gas in the exhaust line 15, so that the ammonia gas is condensed on the wall of the exhaust line 15 and flows back to the high-pressure low-temperature storage tank 13 through the exhaust line 15. The impurity gas 121 is exhausted through the exhaust line 15, so that the impurity gas 121 in the liquid ammonia 12 can be removed while the loss of the liquid ammonia 12 is reduced.
In the drawings of the present invention, as shown in FIG. 3, the exhaust line 15 is shown in phantom and the inlet line 23 is shown in solid to facilitate the distinction between the exhaust line 15 and the inlet line 23. In addition, the exhaust line 15 and the input line 23 of fig. 3 are both helical lines, wherein the helical shape of the input line 23 is larger than that of the exhaust line 15, and the input line 23 is disposed around the exhaust line 15, so that the installation volume of the input line 15 and the exhaust line 23 can be reduced.
Of course, the exhaust line 15 and the input line 23 are spiral, and the input line 23 is disposed around the exhaust line 15 only for an embodiment of the present invention, and the scope of the present invention is not limited by the scope of the present invention. In various embodiments, the input line 23 and the exhaust line 15 may be serpentine or have other geometric shapes, and the input line 23 and the exhaust line 15 may not overlap each other.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e., all equivalent variations and modifications in the shape, structure, characteristics and spirit of the present invention described in the claims should be included in the scope of the present invention.
Claims (11)
1. An impurity gas removing apparatus for liquid ammonia, comprising:
a cooling tank for containing a cryogenic fluid;
a high-pressure low-temperature storage tank for storing liquid ammonia and at least one impurity gas;
an exhaust line fluidly connected to the high-pressure cryogenic storage tank and disposed in the cooling tank to contact the cryogenic fluid in the cooling tank, wherein an ammonia gas and the impurity gas leave the liquid ammonia and are transported from the high-pressure cryogenic storage tank to the exhaust line, such that the ammonia gas condenses on an inner surface of the exhaust line to form the liquid ammonia and flows back to the high-pressure cryogenic storage tank via the exhaust line, and the impurity gas is transported to the outside via the exhaust line; and
a temporary storage tank connected with the exhaust pipeline and positioned in the cooling tank to contact with the cryogenic fluid in the cooling tank, wherein the sectional area of the temporary storage tank is larger than that of the exhaust pipeline and is used for temporarily storing the liquid ammonia transmitted by the exhaust pipeline.
2. The apparatus for removing impurity gases from liquid ammonia as claimed in claim 1, wherein a vibration unit is connected to said high-pressure cryogenic storage tank and vibrates or stirs said liquid ammonia in said high-pressure cryogenic storage tank.
3. The apparatus according to claim 2, wherein the vibration unit is an ultrasonic vibration unit, a magnetic stirrer or a knocker.
4. The apparatus for removing impurity gases from liquid ammonia according to claim 1, wherein said cooling tank is connected to at least one cryogenic fluid feed pipe and a cryogenic fluid discharge pipe, said cryogenic fluid being fed into said cooling tank through said cryogenic fluid feed pipe and being discharged from said cooling tank through said cryogenic fluid discharge pipe.
5. The apparatus for removing impurity gases from liquid ammonia according to claim 1, comprising at least one input line disposed in said cooling tank and fluidly connected to said high-pressure cryogenic storage tank.
6. The apparatus for removing impurity gas from liquid ammonia according to claim 5, comprising an ammonia purification device connected to said input line, and for supplying said purified ammonia and said impurity gas to said high-pressure cryogenic storage tank through said input line.
7. The apparatus for removing impurity gases from liquid ammonia as claimed in claim 6, further comprising a pump connecting said ammonia purification apparatus and said input line.
8. The apparatus according to claim 5, wherein the input line of the exhaust line is a spiral line.
9. The apparatus for removing impurity gas from liquid ammonia according to claim 1, wherein the temperature of said cryogenic fluid in said cooling tank is lower than 3 ℃.
10. The apparatus for removing impurity gas from liquid ammonia according to claim 1, wherein the high-pressure low-temperature storage tank has a pressure of more than five atmospheres and a temperature of less than 3 ℃.
11. The apparatus for removing impurity gas from liquid ammonia as set forth in claim 1, wherein a valve is connected to said exhaust line, and the connection of said exhaust line to said high-pressure cryogenic storage tank is opened or closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152533.0A CN110862099A (en) | 2019-11-22 | 2019-11-22 | Foreign gas removing device for liquid ammonia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152533.0A CN110862099A (en) | 2019-11-22 | 2019-11-22 | Foreign gas removing device for liquid ammonia |
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| CN110862099A true CN110862099A (en) | 2020-03-06 |
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| CN201911152533.0A Pending CN110862099A (en) | 2019-11-22 | 2019-11-22 | Foreign gas removing device for liquid ammonia |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080279732A1 (en) * | 2005-02-16 | 2008-11-13 | Imi Vision Limited | Exhaust as Treatment |
| RU2438975C1 (en) * | 2010-07-21 | 2012-01-10 | ООО "Проектный офис" | Method of producing stoichiometric hydronitric mixture, method of producing ammonia using said mixture and apparatus for realising said methods |
| TWI600616B (en) * | 2016-07-14 | 2017-10-01 | 亞氨科技股份有限公司 | Electronic grade ammonia hydroxide manufacture system and method thereof |
| TW201840351A (en) * | 2017-03-29 | 2018-11-16 | 日商住友精化股份有限公司 | Rectification apparatus |
| CN108939802A (en) * | 2018-08-24 | 2018-12-07 | 苏容婵 | Ammonia concentration lifting device |
| CN110015668A (en) * | 2019-04-02 | 2019-07-16 | 巫协森 | Primary liquefied ammonia purifying is the method and its system of high purity liquid ammonia |
-
2019
- 2019-11-22 CN CN201911152533.0A patent/CN110862099A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080279732A1 (en) * | 2005-02-16 | 2008-11-13 | Imi Vision Limited | Exhaust as Treatment |
| RU2438975C1 (en) * | 2010-07-21 | 2012-01-10 | ООО "Проектный офис" | Method of producing stoichiometric hydronitric mixture, method of producing ammonia using said mixture and apparatus for realising said methods |
| TWI600616B (en) * | 2016-07-14 | 2017-10-01 | 亞氨科技股份有限公司 | Electronic grade ammonia hydroxide manufacture system and method thereof |
| TW201840351A (en) * | 2017-03-29 | 2018-11-16 | 日商住友精化股份有限公司 | Rectification apparatus |
| CN108939802A (en) * | 2018-08-24 | 2018-12-07 | 苏容婵 | Ammonia concentration lifting device |
| CN110015668A (en) * | 2019-04-02 | 2019-07-16 | 巫协森 | Primary liquefied ammonia purifying is the method and its system of high purity liquid ammonia |
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Application publication date: 20200306 |