阅读说明：本技术 废氘气纯化系统 (Waste deuterium gas purification system ) 是由 周国忠 刘洋 于 2019-10-30 设计创作，主要内容包括：本发明公开了一种废氘气纯化系统,包括依次连接的含氘气原料气罐(1)、压缩机(2)、缓冲罐(3)、干燥单元(4)、第一换热器(5)、吸附炉(6)、干燥器(7),所述干燥器(7)的顶连接气体排放管路(8),所述干燥器(7)的底部连接液体储罐(9),所述液体储罐(9)连接重水发生器(10)。本发明用以纯化并收集氘气,节约了资源,提供了重复利用率。(The invention discloses a waste deuterium gas purification system which comprises a deuterium gas-containing raw material gas tank (1), a compressor (2), a buffer tank (3), a drying unit (4), a first heat exchanger (5), an adsorption furnace (6) and a dryer (7) which are sequentially connected, wherein the top of the dryer (7) is connected with a gas discharge pipeline (8), the bottom of the dryer (7) is connected with a liquid storage tank (9), and the liquid storage tank (9) is connected with a heavy water generator (10). The invention is used for purifying and collecting deuterium gas, saves resources and provides reuse rate.)

1. A spent deuterium gas purification system, characterized in that: including deuterium gas-containing raw material gas jar (1), compressor (2), buffer tank (3), drying unit (4), first heat exchanger (5), adsorption furnace (6), desicator (7) that connect gradually, gas emission pipeline (8) is connected on the top of desicator (7), liquid storage tank (9) is connected to the bottom of desicator (7), heavy water generator (10) is connected in liquid storage tank (9).

2. The spent deuterium gas purification system of claim 1, wherein: the drying unit (4) comprises a lossless regeneration drying device (11) and a deep dryer (12), wherein the lossless regeneration drying device (11) is sequentially connected between the buffer tank (3) and the first heat exchanger (5).

3. The spent deuterium gas purification system of claim 1, wherein: the dryer (7) adopts a lossless regeneration drying device (11).

4. The spent deuterium gas purification system of claim 2 or 3, wherein: the nondestructive regeneration drying device (11) comprises a drying cylinder A (11a), a drying cylinder B (11B), a second heat exchanger (11c) and a dehydrator (11d), wherein the second heat exchanger (11c) and the dehydrator (11d) are connected between an air inlet of one drying cylinder of the drying cylinder A (11a) and the drying cylinder B (11B) and an air outlet of the other drying cylinder; a switching pipeline (11f) with a valve (11e) is arranged between the air outlet of one drying cylinder and the air inlet of the other drying cylinder and between the air outlet of the one drying cylinder and the buffer tank (3), and the switching pipeline (11f) with the valve (11e) can switch air paths to control the air paths to lead to the drying cylinder B (11B) from the drying cylinder A (11a) or lead to the drying cylinder A (11a) from the drying cylinder B (11B).

5. The spent deuterium gas purification system of claim 4, wherein: the number of the second heat exchangers (11c) and the number of the water removers (11d) are two, and the two water removers (11d) are located between the two second heat exchangers (11 c).

6. The spent deuterium gas purification system of claim 4, wherein: the bottoms of a second heat exchanger (11c) and a dehydrator (11d) of the lossless regeneration drying device (11) of the drying unit (4) are connected with a pure water collecting barrel (14); the bottoms of a second heat exchanger (11c) and a dehydrator (11d) of a lossless regeneration drying device (11) of the dryer (7) are connected with a liquid storage tank (9), and the liquid storage tank (9) is connected with a heavy water generator (10).

7. The spent deuterium gas purification system of claim 4, wherein: the heat exchanger further comprises a precooler (13), and the precooler (13) is connected with the first heat exchanger (5) and the second heat exchanger (11c) respectively.

8. The spent deuterium gas purification system of claim 4, wherein: the first heat exchanger and the second heat exchanger (5, 11c) adopt a tube heat exchanger or a coil heat exchanger.

Technical Field

The invention relates to a waste deuterium gas purification system.

Background

With the rapid development of global economy, the social demand for energy is increasing day by day, and countries face the problem of energy exhaustion in economic development. This has made research into deuterium gas, which is called "future natural fuel", the focus of much attention. Deuterium gas can be applied to sintering or annealing processes in the electronic industry of semiconductors, solar cells and the like, and the fields of nuclear fusion reaction, chemistry, biochemistry and the like. With the continuous development of science and technology, deuterium gas is applied more and more widely, and the deuterium gas preparation technology also has research value. The existing waste deuterium gas is directly discharged, and resources are wasted.

Disclosure of Invention

In order to overcome the above disadvantages, the present invention aims to provide a waste deuterium purification system that saves resources and increases the recycling rate.

In order to achieve the above purposes, the invention adopts the technical scheme that: the waste deuterium gas purification system comprises a deuterium gas-containing raw material gas tank, a compressor, a buffer tank, a drying unit, a first heat exchanger, an adsorption furnace and a dryer which are sequentially connected, wherein the top of the dryer is connected with a gas discharge pipeline, the bottom of the dryer is connected with a liquid storage tank, and the liquid storage tank is connected with a heavy water generator.

The waste deuterium gas purification system has the advantages that deuterium-containing gas raw material gas is discharged to the buffer tank through the compressor, moisture in the deuterium-containing gas raw material gas is removed through the drying unit, the temperature of the deuterium-containing gas raw material gas is raised through the first heat exchanger, the deuterium gas and oxygen react in the adsorption furnace through the adsorption furnace, unreacted impurity gas passes through the dryer for water removal, the liquid storage tank collects reacted heavy water, the heavy water generator is used for generating deuterium gas, the product deuterium gas is collected, and the impurity gas is discharged from the gas discharge pipeline at the top of the dryer and used for purifying and collecting deuterium gas, so that resources are saved, and the reuse rate is provided.

Preferably, the drying unit comprises a lossless regeneration drying device and a deep dryer, and the lossless regeneration drying device is sequentially connected between the buffer tank and the first heat exchanger. The nondestructive regeneration drying device can continuously dry the deuterium-containing gas feed gas, and the deep dryer ensures the drying of the deuterium-containing gas feed gas.

Preferably, the dryer employs a lossless regenerative drying device. The lossless regeneration drying device can continuously dry the heavy water.

Preferably, the nondestructive regeneration drying device comprises a drying cylinder A, a drying cylinder B, a second heat exchanger and a dehydrator, wherein the second heat exchanger and the dehydrator are connected between the air inlet of one drying cylinder of the drying cylinder A and the drying cylinder B and the air outlet of the other drying cylinder; a switching pipeline with a valve is arranged between the air outlet of one drying cylinder and the air inlet of the other drying cylinder and between the air outlet of the other drying cylinder and the buffer tank, and the switching pipeline with the valve can switch air paths to control the air paths to lead to the drying cylinder B from the drying cylinder A or lead to the drying cylinder A from the drying cylinder B. The deuterium-containing gas raw material gas is used for drying particles (filler) of adsorption liquid in a first drying cylinder (drying cylinder A), then the deuterium-containing gas raw material gas enters a second drying cylinder (drying cylinder B), the second drying cylinder (drying cylinder B) is used for removing water of gas, so that the gas can be dried and removed without interruption, after the adsorption filler in the original first drying cylinder (drying cylinder A) is dried, and the adsorption filler in the second drying cylinder (drying cylinder B) can not be adsorbed again, the deuterium-containing gas raw material gas is switched through a switching pipeline, and then the deuterium-containing gas raw material gas passes through the drying cylinder B first, the adsorption filler in the drying cylinder B is dried, and then the deuterium-containing gas raw material gas is dried by the drying cylinder A, so that lossless regeneration can be realized.

Preferably, the number of the second heat exchangers and the number of the water removers are two, and the two water removers are located between the two second heat exchangers. Can better remove water and exchange heat.

Preferably, the bottoms of the second heat exchanger and the dehydrator of the nondestructive regeneration drying device of the drying unit are connected with a pure water collecting barrel; and the bottoms of the second heat exchanger and the dehydrator of the nondestructive regeneration drying device of the dryer are connected with a liquid storage tank, and the liquid storage tank is connected with the heavy water generator. The liquid in the pure water collecting barrel is directly discharged, and the liquid storage tank is connected with the heavy water generator and used for generating deuterium gas.

Preferably, the system further comprises a precooler, and the precooler is respectively connected with the plurality of second heat exchangers. To provide heat exchange conditions for the second heat exchanger.

Preferably, the second heat exchanger is a tube-in-tube second heat exchanger or a coil second heat exchanger. Selected according to specific requirements.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

fig. 2 is a schematic structural diagram of the lossless regenerative drying apparatus in this embodiment.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

Referring to the attached drawing 1, the spent deuterium gas purification system of the embodiment includes a deuterium-containing gas raw material gas tank 1, a compressor 2, a buffer tank 3, a drying unit 4, a first heat exchanger 5, an adsorption furnace 6 and a dryer 7 which are connected in sequence, wherein the drying unit 4 includes a nondestructive regeneration drying device 11 and a deep dryer 12, and the nondestructive regeneration drying device 11 is connected between the buffer tank 3 and the first heat exchanger 5 in sequence. The drier 7 adopts a nondestructive regeneration drying device 11, the top of the drier 7 is connected with a gas discharge pipeline 8, the bottom of the drier 7 is connected with a liquid storage tank 9, and the liquid storage tank 9 is connected with a heavy water generator 10.

As shown in fig. 1 and 2, the lossless regeneration drying device 11 includes a drying cylinder a11a, a drying cylinder B11B, a second heat exchanger 11c, and a dehydrator 11d, wherein the second heat exchanger 11c and the dehydrator 11d are connected between an air inlet of one of the drying cylinders a11a and the drying cylinder B11B and an air outlet of the other drying cylinder; a switching pipeline 11f with a valve 11e is arranged between the air outlet of one drying cylinder and the air inlet of the other drying cylinder and between the buffer tank 3, and the switching pipeline 11f with the valve 11e can switch air paths to control the air paths to lead from the drying cylinder A11a to the drying cylinder B11B or from the drying cylinder B11B to the drying cylinder A11 a. The number of the second heat exchangers 11c and the number of the dehydrator 11d are two, and the two dehydrators 11d are located between the two second heat exchangers 11 c. The bottoms of the second heat exchanger 11c and the dehydrator 11d of the nondestructive regeneration drying device 11 of the drying unit 4 are connected with a pure water collecting barrel 14; the bottoms of the second heat exchanger 11c and the dehydrator 11d of the nondestructive regeneration drying device 11 of the dryer 7 are connected with the liquid storage tank 9, and the liquid storage tank 9 is connected with the heavy water generator 10.

Wherein, the first heat exchanger 5 and the second heat exchanger 11c both adopt a tube heat exchanger or a coil heat exchanger.

The waste deuterium gas purification system of the embodiment further comprises a precooler 13, and the precooler 13 is respectively connected with the first heat exchanger 5 and the second heat exchanger 11 c.

The working principle of this embodiment is that the deuterium containing gas feed gas is discharged to the buffer tank 3 through the compressor 2, moisture in the deuterium containing gas feed gas is removed through the drying unit 4, specifically, the deuterium containing gas feed gas passes through the drying cylinder a11a of the lossless regeneration drying device 11 of the drying unit 4 first, the filler of the absorption liquid in the drying cylinder a11a is dried, and then passes through the second heat exchanger 11c, the two dehydrators 11d and the second heat exchanger 11c to perform heat exchange, twice dehydration and heat regeneration, the gas passes through the drying cylinder B11B, the drying cylinder B11B dries the gas, and the water collected by the two second heat exchangers 11c and the two dehydrators 11d of the drying unit 4 enters the pure water collecting cylinder 14. The gas enters the deep dryer 12 to be dried again, so that the dryness of the gas is ensured.

Then the temperature is raised through the first heat exchanger 5, the deuterium gas and oxygen gas react in the adsorption furnace 6, heavy water and impurity gas are generated after the reaction, the impurity gas passes through the drying cylinder A11a of the dryer 7 to dry the filler of the adsorption liquid in the drying cylinder A11a, the filler passes through the second heat exchanger 11c, the two water removers 11d and the second heat exchanger 11c to exchange heat, remove water twice and exchange heat again, the impurity gas passes through the drying cylinder B11B, the drying cylinder B11B dries the impurity gas, the heavy water collected by the two second heat exchangers 11c and the two water removers 11d of the dryer 7 enters the liquid storage tank 9, the deuterium gas is generated by the heavy water generator 11, the product deuterium gas is collected, and the impurity gas is discharged from the gas discharge pipeline 8 at the top of the dryer 7.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.