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CN-121971874-A - Device for condensing and recycling waste heavy water in deuterium gas preparation process

CN121971874ACN 121971874 ACN121971874 ACN 121971874ACN-121971874-A

Abstract

The application belongs to the technical field of power supply design of nuclear energy equipment, and particularly relates to a power supply protection and distribution unit circuit. The device comprises an outer box shell and a refrigeration liner arranged in the outer box shell, wherein an air inlet and an air outlet are formed in the refrigeration liner, an air flow channel is formed between the air inlet and the air outlet, a cross flow fan is arranged at the air inlet and used for guiding waste gas into the air flow channel, a thermoelectric refrigerating sheet is arranged in the refrigeration liner, a cold end fin is connected behind the cold end of the thermoelectric refrigerating sheet and used for condensing heavy water vapor in the waste gas in the air flow channel, and the problem that heavy water vapor in by-product oxygen is mostly discharged along with the oxygen directly when deuterium is produced by heavy water electrolysis in the prior art, so that heavy water is greatly wasted is solved.

Inventors

  • LI ZHILIANG
  • LI PING
  • FENG XUEZHI
  • ZHOU LIZHONG
  • XIAO JIANHUA
  • FENG ZEHUA
  • CHANG XIAORONG
  • Qi Houxiang
  • ZHANG YULI

Assignees

  • 中核陕西铀浓缩有限公司

Dates

Publication Date
20260505
Application Date
20251230

Claims (10)

  1. 1. The device for condensing and recycling the waste heavy water in the deuterium gas preparation process is characterized by comprising an outer box shell and a refrigerating liner arranged inside the outer box shell; The refrigerating liner is provided with an air inlet and an air outlet, and an air flow channel is formed between the air inlet and the air outlet; The cooling inner container is internally provided with a thermoelectric cooling piece (2), and a cold end fin (3) is connected behind the cold end of the thermoelectric cooling piece (2) and is used for condensing heavy water vapor in waste gas in the air flow passage.
  2. 2. The device for condensate recovery of waste heavy water in deuterium gas production process according to claim 1, characterized in that it further comprises a water collecting tray (4); The water collecting disc (4) is arranged at the lower end of the cold end fin (3) and is used for collecting condensed water.
  3. 3. The device for condensing and recovering waste heavy water in deuterium gas production process according to claim 2, characterized in that the lower end of the water collecting tray (4) is connected with the heavy water tank (7) through an opening.
  4. 4. The device for condensing and recycling waste heavy water in deuterium gas preparation process according to claim 1, wherein the hot end and the cold end of the thermoelectric refrigeration piece (2) are both provided with insulating ceramic plates, and heat conduction silicone grease is smeared between the cold end of the thermoelectric refrigeration piece (2) and the cold end fins (3).
  5. 5. The device for condensate recovery of waste heavy water in deuterium gas production process according to claim 1, characterized in that the thermoelectric cooling fin (2) is a single-stage refrigerator.
  6. 6. The device for condensing and recovering waste heavy water in deuterium gas production process according to claim 1, characterized in that the cold end fins (3) are corrugated fins.
  7. 7. The device for condensing and recovering waste heavy water in deuterium gas production process according to any one of claims 1-6, characterized in that the hot end of thermoelectric cooling fin (2) is provided with a heat radiating fin (5), and the other end of heat radiating fin (5) is provided with a heat radiating fan (6).
  8. 8. The device for condensing and recovering waste heavy water in deuterium gas production process according to claim 7, characterized in that the other end of the radiating fin (5) is provided with a mounting groove for connecting a radiating fan (6).
  9. 9. The apparatus for condensing and recovering waste heavy water in deuterium gas production process according to any one of claims 1-6, characterized in that the outer casing is made of polyurethane thermal insulation material.
  10. 10. The device for condensing and recovering waste heavy water in deuterium gas production process according to any one of claims 1-6, characterized in that thermoelectric cooling plate (2) is two thermoelectric cooling plates of TEC1-12706 type.

Description

Device for condensing and recycling waste heavy water in deuterium gas preparation process Technical Field The application belongs to the technical field of heavy water recovery, and particularly relates to a device for condensing and recovering waste heavy water in a deuterium gas preparation process. Background In the traditional method for preparing deuterium by electrolyzing heavy water, the heavy water is taken as a raw material and is respectively decomposed into deuterium and by-product oxygen at a negative electrode and a positive electrode under the action of electrolysis. Wherein the byproduct oxygen is condensed and recovered along with heavy water vapor which is not electrolyzed through a traditional condensing heat exchanger, the oxygen is discharged by an oxygen pumping fan, and the condensed and recovered heavy water is continuously subjected to recycling electrolysis. In addition, if the pipeline of the water-cooled condensing heat exchanger is damaged or the sealing of the runner is damaged, the cooling water in the condensing heat exchanger is easy to enter an electrolytic device, so that the heavy water is polluted, and the abundance and purity of deuterium gas are influenced. Disclosure of Invention The application aims to provide a device for condensing and recycling waste heavy water in a deuterium gas preparation process, which solves the problem that heavy water is wasted greatly because heavy water vapor contained in byproduct oxygen is mostly directly discharged along with the oxygen when deuterium is prepared by heavy water electrolysis in the prior art. The technical scheme for realizing the purpose of the application comprises the following steps: the embodiment of the application provides a device for condensing and recycling waste heavy water in a deuterium gas preparation process, which comprises an outer box shell and a refrigerating liner arranged inside the outer box shell; the refrigerating liner is provided with an air inlet and an air outlet, and an air flow channel is formed between the air inlet and the air outlet; the thermoelectric cooling piece is arranged in the cooling inner container, and a cold end fin is connected behind the cold end of the thermoelectric cooling piece and used for condensing heavy water vapor in the waste gas in the air flow path. Optionally, the device further comprises a water collecting disc; The water collecting disc is arranged at the lower end of the cold end fin and used for collecting condensed water. Optionally, the lower end of the water collecting tray is connected with the heavy water tank through an opening. Optionally, the hot end and the cold end of the thermoelectric cooling piece are both provided with insulating ceramic plates, and heat conduction silicone grease is smeared between the cold end and the cold end fins of the thermoelectric cooling piece. Alternatively, the thermoelectric cooling fin is a single stage refrigerator. Optionally, the cold end fin is a corrugated fin. Optionally, a heat dissipation fin is arranged at the hot end of the thermoelectric cooling fin, and a heat dissipation fan is arranged at the other end of the heat dissipation fin. Optionally, an installation groove is formed at the other end of the radiating fin and is used for connecting a radiating fan. Optionally, the material of the outer case is polyurethane heat insulation material. Optionally, the thermoelectric cooling sheets are two thermoelectric cooling sheets of TEC1-12706 type. The beneficial technical effects of the application are as follows: The device for condensing and recycling the waste heavy water in the deuterium gas preparation process comprises an outer box shell and a refrigerating inner container arranged in the outer box shell, wherein an air inlet and an air outlet are formed in the refrigerating inner container, an air flow channel is formed between the air inlet and the air outlet, a through-flow fan is arranged at the air inlet and used for guiding waste gas into the air flow channel, a thermoelectric refrigerating sheet is arranged in the refrigerating inner container, and a cold end fin is connected behind a cold end of the thermoelectric refrigerating sheet and used for condensing heavy water vapor in the waste gas in the air flow channel. The embodiment of the application is different from the traditional refrigeration technology, adopts a thermoelectric refrigeration sheet for electronic refrigeration, does not use a refrigeration compressor and a refrigerant, does not depend on the conversion of the refrigerant to conduct heat, and solves the problem that heavy water is wasted greatly because heavy water vapor contained in by-product oxygen is discharged along with the oxygen directly when heavy water is electrolyzed to prepare deuterium in the prior art. Drawings FIG. 1 is a schematic diagram of a device for condensing and recovering heavy wastewater in deuterium gas production process according to an embodiment