Preparation device and preparation method of fused salt reactor liquid fuel

Abstract

The invention relates to a preparation device of a fused salt reactor liquid fuel. The preparation device of the fused salt reactor liquid fuel comprises an air circuit system, a fused salt preparation and purification system, and a tail gas absorption treatment system, wherein the air circuit system is used for controlling the flows of argon, hydrogen and hydrogen fluoride; the fused salt preparation and purification system is used for reducing oxide impurities in fused salt through the hydrogen, fluoridizing and deoxidizing the fused salt through hydrogen fluoride, and transferring liquid-state fused salt through the air pressure of the argon; the tail gas absorption treatment system is used for absorbing and retaining hydrogen fluoride tail gas and fused salt tail gas produced through the fused salt preparation and purification system; the air circuit system communicates with the fused salt preparation and purification system through an air inlet channel; the fused salt preparationand purification system communicates with the tail gas absorption treatment system. The invention also relates to a preparation method of the fused salt reactor liquid fuel. The preparation device andthe preparation method provided by the invention can be used for preparing fused salt reactor feeding base salt FLiBeZr and additive salt FLiU with stable Li, Be and Zr components, high purity and low impurity content.

Description

technical field

[0001] The invention relates to nuclear fuel industry technology and chemical technology, and more particularly relates to a preparation device and a preparation method of molten salt reactor liquid fuel. Background technique

[0002] The molten salt nuclear reactor (Molten Salt Reactor) is currently the only one of the six internationally recognized fourth-generation nuclear energy systems that uses liquid fuel. Its primary circuit uses liquid fluorine salt as fuel, and the secondary circuit coolant also uses liquid fluorine salt. Compared with the third-generation reactor currently in service, its inherent safety is improved due to its operation close to atmospheric pressure; liquid fuel is convenient for on-line nuclear fuel reprocessing to realize the recycling of nuclear fuel; the thermal power density is high, and the core structure is relatively simple. Easy to miniaturize and other advantages.

[0003] Molten salt reactor liquid fuel mainly includes ...

Examples

Embodiment 1

[0029] Such as figure 1 As shown, the preparation device for molten salt reactor liquid fuel according to a preferred embodiment of the present invention includes a gas circuit system 1, a molten salt preparation and purification system 2 and an exhaust gas absorption treatment system 3, wherein the gas circuit system 1 is suitable for argon, hydrogen The flow rate of the three gases and hydrogen fluoride is controlled, which communicates with the molten salt preparation and purification system 2 through the inlet passage 4; the molten salt preparation and purification system 2 transfers the liquid molten salt through the pressure of argon, and it communicates with the tail gas through the outlet passage 5 The absorption treatment system 3 is connected; the tail gas absorption treatment system 3 absorbs and retains hydrogen fluoride tail gas and beryllium-related uranium-related tail gas. The outlet passage 5 is provided with a heat tracing system to heat the gas in the outlet...

Embodiment 2

[0040] The preparation device of molten salt reactor liquid fuel is the same as that in Example 1.

[0041] The preparation method of the molten salt reactor liquid fuel firstly includes: powdery 860g lithium fluoride (LiF) and 716.55g beryllium fluoride (BeF 2 ) fully mixed in the glove box 210 and packed into the premelt tank 21; the Ar source 12 was opened to pass through the first gas pipeline 14, the air intake passage 4, the third gas pipeline 25, the fourth gas pipeline 27 and The air outlet channel 5 feeds into the premelting tank 21 with a flow rate of 150ml min -1 kg -1 The Ar of molten salt is purged; Turn on temperature regulating device 29 and premelt tank 21 and reaction tank 22 are all heated to 350 ℃ and carry out 12h insulation baking; Then by temperature regulating device 29, premelt tank 21 and reaction tank 22 are heated up to 600°C to make the LiF and BeF in the premelting tank 21 2 Complete melting to form molten salt; open the heating system of the fi...

Embodiment 3

[0046] The preparation device of molten salt reactor liquid fuel is the same as that in Example 1.

[0047] The preparation method of molten salt reactor liquid fuel firstly includes: 52.7g of powdered lithium fluoride (LiF) and 247.3g of uranium tetrafluoride (UF 4 ) fully mixed in the glove box 210 and packed into the premelt tank 21; the Ar source 12 was opened to pass through the first gas pipeline 14, the air intake passage 4, the third gas pipeline 25, the fourth gas pipeline 27 and The air outlet channel 5 feeds into the premelting tank 21 with a flow rate of 120ml min -1 kg -1 The Ar of molten salt is purged; Turn on temperature regulating device 29 and premelt tank 21 and reaction tank 22 are all heated to 350 ℃ and carry out 12h insulation baking; Then by temperature regulating device 29, premelt tank 21 and reaction tank 22 are heated up to 650°C to make the LiF and UF in the premelting tank 21 4 Complete melting to form molten salt; open the heating system of th...

technical field

[0001] The invention relates to nuclear fuel industry technology and chemical technology, and more particularly relates to a preparation device and a preparation method of molten salt reactor liquid fuel. Background technique

[0002] The molten salt nuclear reactor (Molten Salt Reactor) is currently the only one of the six internationally recognized fourth-generation nuclear energy systems that uses liquid fuel. Its primary circuit uses liquid fluorine salt as fuel, and the secondary circuit coolant also uses liquid fluorine salt. Compared with the third-generation reactor currently in service, its inherent safety is improved due to its operation close to atmospheric pressure; liquid fuel is convenient for on-line nuclear fuel reprocessing to realize the recycling of nuclear fuel; the thermal power density is high, and the core structure is relatively simple. Easy to miniaturize and other advantages.

[0003] Molten salt reactor liquid fuel mainly includes ...

Examples

Embodiment 1

[0029] Such as figure 1 As shown, the preparation device for molten salt reactor liquid fuel according to a preferred embodiment of the present invention includes a gas circuit system 1, a molten salt preparation and purification system 2 and an exhaust gas absorption treatment system 3, wherein the gas circuit system 1 is suitable for argon, hydrogen The flow rate of the three gases and hydrogen fluoride is controlled, which communicates with the molten salt preparation and purification system 2 through the inlet passage 4; the molten salt preparation and purification system 2 transfers the liquid molten salt through the pressure of argon, and it communicates with the tail gas through the outlet passage 5 The absorption treatment system 3 is connected; the tail gas absorption treatment system 3 absorbs and retains hydrogen fluoride tail gas and beryllium-related uranium-related tail gas. The outlet passage 5 is provided with a heat tracing system to heat the gas in the outlet...

Embodiment 2

[0040] The preparation device of molten salt reactor liquid fuel is the same as that in Example 1.

[0041] The preparation method of the molten salt reactor liquid fuel firstly includes: powdery 860g lithium fluoride (LiF) and 716.55g beryllium fluoride (BeF 2 ) fully mixed in the glove box 210 and packed into the premelt tank 21; the Ar source 12 was opened to pass through the first gas pipeline 14, the air intake passage 4, the third gas pipeline 25, the fourth gas pipeline 27 and The air outlet channel 5 feeds into the premelting tank 21 with a flow rate of 150ml min -1 kg -1 The Ar of molten salt is purged; Turn on temperature regulating device 29 and premelt tank 21 and reaction tank 22 are all heated to 350 ℃ and carry out 12h insulation baking; Then by temperature regulating device 29, premelt tank 21 and reaction tank 22 are heated up to 600°C to make the LiF and BeF in the premelting tank 21 2 Complete melting to form molten salt; open the heating system of the fi...

Embodiment 3

[0046] The preparation device of molten salt reactor liquid fuel is the same as that in Example 1.

[0047] The preparation method of molten salt reactor liquid fuel firstly includes: 52.7g of powdered lithium fluoride (LiF) and 247.3g of uranium tetrafluoride (UF 4 ) fully mixed in the glove box 210 and packed into the premelt tank 21; the Ar source 12 was opened to pass through the first gas pipeline 14, the air intake passage 4, the third gas pipeline 25, the fourth gas pipeline 27 and The air outlet channel 5 feeds into the premelting tank 21 with a flow rate of 120ml min -1 kg -1 The Ar of molten salt is purged; Turn on temperature regulating device 29 and premelt tank 21 and reaction tank 22 are all heated to 350 ℃ and carry out 12h insulation baking; Then by temperature regulating device 29, premelt tank 21 and reaction tank 22 are heated up to 650°C to make the LiF and UF in the premelting tank 21 4 Complete melting to form molten salt; open the heating system of th...

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