CN112429704A - Iodine chamber system - Google Patents

Iodine chamber system Download PDF

Info

Publication number
CN112429704A
CN112429704A CN202011405985.8A CN202011405985A CN112429704A CN 112429704 A CN112429704 A CN 112429704A CN 202011405985 A CN202011405985 A CN 202011405985A CN 112429704 A CN112429704 A CN 112429704A
Authority
CN
China
Prior art keywords
gas
iodine
chamber
iodine chamber
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011405985.8A
Other languages
Chinese (zh)
Other versions
CN112429704B (en
Inventor
夏文
叶宏生
陈克胜
宋鑫鹏
林敏�
徐利军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Institute of Atomic of Energy
Original Assignee
China Institute of Atomic of Energy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Institute of Atomic of Energy filed Critical China Institute of Atomic of Energy
Priority to CN202011405985.8A priority Critical patent/CN112429704B/en
Publication of CN112429704A publication Critical patent/CN112429704A/en
Application granted granted Critical
Publication of CN112429704B publication Critical patent/CN112429704B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/13—Iodine; Hydrogen iodide
    • C01B7/14—Iodine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/005—Details of radiation-measuring instruments calibration techniques

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Treating Waste Gases (AREA)

Abstract

The utility model belongs to the technical field of the radiation source preparation, concretely relates to iodine room system for preparing active carbon filter cartridge source. The iodine chamber system comprises a gas generation system, an air supply system, an adsorption system and a storage system; wherein the gas generation system, the air supply system and the adsorption system are all connected with the storage system through pipelines. The system has the advantages that the concentration of iodine can be kept stable, the iodine loss is reduced, and the source activity and distribution of the target filter box can be adjusted.

Description

Iodine chamber system
Technical Field
The utility model belongs to the technical field of the radiation source preparation, concretely relates to iodine room system for preparing active carbon filter cartridge source.
Background
Radionuclides, especially radioactive131And I is a key attention object of nuclear facility operation monitoring, nuclear emergency monitoring and environment monitoring. The monitoring method comprises the following steps: using active carbon filter box to filter air131I is collected by adsorption and analyzed by a NaI (Tl) detector for gamma spectrometry. The research shows that the compound has the advantages of high purity,131i adsorption quantity in the activated carbon filter box is filtered along with the filterThe depth of the box presents exponential distribution, and in order to ensure the accuracy of the monitoring value, the efficiency of the monitoring equipment needs to be calibrated by adopting an exponential distribution active carbon filter box standard source.
Two preparation methods have been studied at present: firstly, adopting surface source simulation preparation, and secondly adopting131I, carrying out adsorption preparation on the gas. The former adopts surface source simulation preparation, needs to carry out preparation of a plurality of sources and carries out positioning filling, and the preparation process is time-consuming and complex, and simultaneously, because of the fact that131The half life of I is only 8 days, which is not beneficial to the rapid preparation and use of standard source; by using131The adsorption preparation of the I gas can effectively improve the efficiency, but the existing method adopting a gas generator to generate and adsorb is mainly used for researching the adsorption efficiency of the activated carbon, and the method does not need to accurately control the adsorption condition, so that the standard source of the activated carbon filter box with certain target activity or distribution cannot be accurately prepared.
Disclosure of Invention
Objects of the invention
In accordance with the problems of the prior art, the present disclosure provides an iodine chamber system that can maintain a stable iodine concentration, reduce iodine loss, and provide adjustable source activity and distribution of a target cartridge.
(II) technical scheme
In order to solve the problems existing in the prior art, the technical scheme provided by the disclosure is as follows:
an iodine chamber system, the iodine chamber system comprising a gas generation system, an air supply system, an adsorption system and a storage system; wherein the gas generation system, the air supply system and the adsorption system are all connected with the storage system through pipelines;
the gas generation system is used for131Generating gas, which mainly comprises a reaction container, a peristaltic pump, a first circulating pump and a first filter, wherein the reaction container is positioned in a constant-temperature water bath; a gas replacing device capable of replacing gas in the glove box is arranged outside the glove box; the first filter is positioned at the rear end of the reaction container and used for drying and removing water vapor in the gas generated by the reaction container, and the dried gas is driven by the circulating pump to enter the iodine chamber storage chamber of the storage system.
The air supply system is mainly used for balancing or emptying gas in an iodine chamber storage chamber and mainly comprises a fan, a second filter, a water removal column, an activated carbon column, a regulating valve, a flowmeter and a one-way valve; wherein the blower is mainly used for pumping air into the iodine chamber storage chamber; the second filter, the water removal column and the activated carbon column are used for purifying air; the regulating valve and the flow meter are used for controlling the pumping air flow rate; the one-way valve is used for controlling the on-off of the air flow and preventing the air from flowing backwards.
The adsorption system is positioned in the constant temperature box and used for preparing a filter cartridge source; the device mainly comprises an active carbon filter box, a tail gas adsorption device and a buffer tank; the buffer tank is a first buffer tank and a second buffer tank which are connected in parallel, and the vacuum pump is connected with the two buffer tanks and used for pumping negative pressure for the buffer tanks; the tail gas adsorption device is connected with the vacuum pump through a pipeline and is used in tail gas131I, adsorption of gas to prevent radioactive pollution; the first buffer tank and the second buffer tank are used for alternately storing adsorbed gas and performing volume setting; the activated carbon filter box is used for131And I, adsorbing the gas, namely preparing an activated carbon filter cartridge source.
The storage system comprises an iodine chamber storage chamber, a heating device and a corresponding monitoring device. Wherein the iodine chamber storage chamber is for storing the gas generated by the gas generating system131I, gas; the monitoring equipment comprises temperature, pressure, humidity and radiation monitoring equipment. Wherein the working pressure of the iodine chamber storage chamber is 1 plus or minus 0.01MPa, and the temperature is between room temperature and 80 ℃;
preferably, the reaction vessel is provided with three interfaces, wherein one interface is connected with the iodine chamber storage chamber through a gas transmission pipeline where the first filter is located; the other two interfaces are respectively connected with the reaction product sample inlet pipe and a gas return pipe of the iodine chamber storage chamber; wherein the gas return pipe is a part for storing the iodine chamber131I, refluxing the gas into the reaction container;
preferably, the reaction product and the reaction formula in the reaction vessel are:
2Na131I+Fe2(SO4)3＝2FeSO4+Na2SO4+131I2
or
2Na131I+H2SO4+H2O2＝Na2SO4+2H2O+131I2
Or
2Na131I+2HNO3+H2O2＝2NaNO3+2H2O+131I2
Or
2Na131I+(CH3)2SO4＝Na2SO4+2CH3 131I；
Preferably, the reaction product and the reaction formula in the reaction vessel are:
2Na131I+Fe2(SO4)3＝2FeSO4+Na2SO4+131I2
or
2Na131I+(CH3)2SO4＝Na2SO4+2CH3 131I
Preferably, the peristaltic pump is used for adding the reaction product into the reaction container, controlling the reaction rate and the total amount, and the rotating speed of the peristaltic pump is adjustable within 0-30 mL/min. The first circulating pump is used for circulating the generated substances in the reaction vessel131I2The gas is conveyed to the iodine chamber storage chamber through a gas conveying pipeline, and the flow rate of the gas is adjustable at 0-30L/min.
Preferably, the gas transmission pipeline is a stainless steel pipeline, the inner wall of the gas transmission pipeline is mirror stainless steel or sprayed with polytetrafluoroethylene, and the inner diameter of the gas transmission pipeline is preferably 0.5-3 cm.
Preferably, the first filter and the second filter are used for removing water vapor in the gas, and a crystalline water type desiccant CaSO is placed in the first filter and the second filter4Or a CaO desiccant.
Preferably, the temperature of the incubator is between room temperature and 80 ℃.
Preferably, the number of the buffer tanks is 2, and the volumes of the buffer tanks are 20-200L respectively.
Preferably, the inner wall of the iodine chamber storage chamber is sprayed with polytetrafluoroethylene, and the outer wall of the iodine chamber storage chamber is provided with a heat insulation layer.
Preferably, the temperature of the thermostatic water bath is 64-66 ℃.
Preferably, the volume of the iodine chamber storage chamber is 1-6 m3。
(III) advantageous effects
The utility model provides an iodine room system adopts bulky iodine room locker room to carry out iodine gas storage, reduces the influence of filter cartridge source activity degree of gas concentration change in the filter cartridge source preparation process, and the stability of preparation parameter is high. The inner walls of the iodine chamber storage chamber and the gas transmission pipeline are sprayed with polytetrafluoroethylene, so that the loss caused by wall adsorption is reduced.
The gas passing through the activated carbon filter cartridge is alternately collected by the buffer tank, and one is evacuated while the other is collected, alternately. When each buffer tank is collected at every time, software can automatically record the gas temperature and the pressure change of the buffer tanks before and after collection, the volume of the buffer tanks is combined, the gas volume collected at the time can be calculated through a gas state equation, and the two buffer tanks are sequentially collected alternately to obtain the total volume of the activated carbon filter box. The volume of the adsorbed air can be accurately determined, and the accuracy of volume activity and concentration is improved.
Drawings
FIG. 1 is a schematic view of an iodine chamber system; wherein 1 is a reaction vessel; 2 is a peristaltic pump; 3 is a first circulation pump; 4 is a first filter; 5 is a heating device; 6 is a motor; 7 is a water removal column; 8 is an activated carbon column; 9 is a second filter; 10 is a fan; 11 is an iodine chamber storage chamber; 12 is an activated carbon filter cartridge; 13 is a first buffer tank; 14 is a second surge tank; 15 is a lanthanum bromide detector; 17 is an external exhaust fan; 18 is a second circulation pump; 19 is a tail gas adsorption unit;
Detailed Description
The disclosure will be further described with reference to specific embodiments and drawings attached to the specification.
Example 1
An iodine chamber system, the iodine chamber system comprising a gas generation system, an air supply system, an adsorption system and a storage system; wherein the gas generation system, the air supply system and the adsorption system are all connected with the storage system through pipelines;
the gas generation system is used for131Generating gas, which mainly comprises a reaction container 1, a peristaltic pump 2, a first circulating pump 3 and a first filter 4 which are positioned in a glove box, wherein the reaction container 1 is placed in a constant-temperature water bath with the temperature of 65 ℃; a gas replacing device capable of replacing gas in the glove box is arranged outside the glove box; the first filter 4 is located at the rear end of the reaction vessel 1 and is used for drying and removing water vapor in the gas generated by the reaction vessel 1, and the dried gas is driven into an iodine chamber storage chamber 11 of the storage system by the first circulating pump 3. The reaction vessel 1 is provided with three interfaces, wherein one interface is connected with an iodine chamber storage chamber 11 through a gas transmission pipeline where the first filter 4 is located; the other two interfaces are respectively connected with a reaction product sample inlet pipe and a gas return pipe of the iodine chamber storage chamber 11; wherein the gas return pipe is a part for storing the iodine chamber in the chamber 11131I, refluxing the gas into the reaction container 1; the reaction product and the reaction formula in the reaction vessel 1 are as follows:
2Na131I+Fe2(SO4)3＝2FeSO4+Na2SO4+131I2(ii) a The peristaltic pump 2 is used for adding reaction products into the reaction container 1, controlling the reaction rate and the total amount, and the rotating speed of the peristaltic pump is adjustable within 0-30 mL/min. The first circulation pump 3 is used for circulating the reaction product generated in the reaction vessel 1131I2The gas is conveyed to the iodine chamber storage chamber 11 through a gas conveying pipeline, and the flow rate of the gas is adjustable at 0-30L/min.
The air supply system is mainly used for balancing or emptying the gas in an iodine chamber storage chamber 11 and mainly comprises a fan, a second filter 9, a water removal column 7, an activated carbon column 8, a regulating valve, a flowmeter and a one-way valve; wherein the blower is mainly used for pumping air into the iodine chamber storage chamber 11; the second filter 9, the dewatering column 7 and the activated carbon column 8 are used for purifying air; the regulating valve and the flow meter are used for controlling the pumping air flow rate; the one-way valve is used for controlling the on-off of the air flow and preventing the air from flowing backwards.
The adsorption system is positioned in the constant temperature box and used for preparing a filter cartridge source; the device mainly comprises an active carbon filter box 12, a tail gas adsorption device 19 and a buffer tank; the buffer tank is composed of a first buffer tank 13 and a second buffer tank 14 which are connected in parallel, a vacuum pump is connected with the two buffer tanks and used for pumping negative pressure for the buffer tanks, and the volume of each buffer tank is 100L. The tail gas adsorption device 19 is connected with a vacuum pump through a pipeline and is used in tail gas131I, adsorption of gas to prevent pollution; the first buffer tank 13 and the second buffer tank 14 are used for alternately storing adsorbed gas and performing volume setting; the activated carbon filter cartridge 12 is used for131And I, adsorbing the gas, namely preparing an activated carbon filter cartridge source.
The storage system comprises an iodine chamber storage chamber 11, a heating device and a corresponding monitoring device. Wherein the iodine chamber storage chamber 11 is used to store the gas generated by the gas generating system131I, gas; the monitoring equipment comprises temperature, pressure, humidity and radiation monitoring equipment. Wherein the working pressure of the iodine chamber storage chamber 11 is 1 plus or minus 0.01MPa, and the temperature is 30 ℃; the inner wall of the iodine chamber storage chamber is sprayed with polytetrafluoroethylene, the outer wall of the iodine chamber storage chamber is provided with a heat preservation layer, and the volume of the iodine chamber storage chamber is 3m3。
The first filter 4 and the second filter 9 are used for removing water vapor in the gas, and a crystal water type desiccant CaSO is arranged in the first filter 4 and the second filter 94A desiccant. The gas transmission pipeline is made of stainless steel, the inner wall of the gas transmission pipeline is made of mirror-surface stainless steel or sprayed with polytetrafluoroethylene, and the inner diameter of the gas transmission pipeline is preferably 0.5 cm.
Example 2
An iodine chamber system, the iodine chamber system comprising a gas generation system, an air supply system, an adsorption system and a storage system; wherein the gas generation system, the air supply system and the adsorption system are all connected with the storage system through pipelines;
the gas generation system is used for131Generating gas, which mainly comprises a reaction container 1, a peristaltic pump 2, a first circulating pump 3 and a first filter 4 which are positioned in a glove box, wherein the reaction container 1 is placed in a constant-temperature water bath with the temperature of 64 ℃; the outside of the glove box is provided with a gas capable of replacing the gas in the glove boxA body replacement device; the first filter 4 is located at the rear end of the reaction vessel 1 and is used for drying and removing water vapor in the gas generated by the reaction vessel 1, and the dried gas is driven into an iodine chamber storage chamber 11 of the storage system by the first circulating pump 3. The reaction vessel 1 is provided with three interfaces, wherein one interface is connected with an iodine chamber storage chamber 11 through a gas transmission pipeline where the first filter 4 is located; the other two interfaces are respectively connected with a reaction product sample inlet pipe and a gas return pipe of the iodine chamber storage chamber 11; wherein the gas return pipe is a part for storing the iodine chamber in the chamber 11131I, refluxing the gas into the reaction container; the reaction product and the reaction formula in the reaction vessel 1 are as follows: 2Na131I+H2SO4+H2O2＝Na2SO4+2H2O+131I2(ii) a The peristaltic pump 2 is used for adding reaction products into the reaction container 1, controlling the reaction rate and the total amount, and the rotating speed of the peristaltic pump is adjustable within 0-30 mL/min. The first circulation pump 3 is used for circulating the reaction product generated in the reaction vessel 1131I2The gas is conveyed to the iodine chamber storage chamber 11 through a gas conveying pipeline, and the flow rate of the gas is adjustable at 0-30L/min.
The air supply system is mainly used for balancing or emptying the gas in an iodine chamber storage chamber 11 and mainly comprises a fan, a second filter 9, a water removal column 7, an activated carbon column 8, a regulating valve, a flowmeter and a one-way valve; wherein the blower is mainly used for pumping air into the iodine chamber storage chamber 11; the second filter 9, the dewatering column 7 and the activated carbon column 8 are used for purifying air; the regulating valve and the flow meter are used for controlling the pumping air flow rate; the one-way valve is used for controlling the on-off of the air flow and preventing the air from flowing backwards.
The adsorption system is positioned in the constant temperature box and used for preparing a filter cartridge source; the device mainly comprises an active carbon filter box 12, a tail gas adsorption device 19 and a buffer tank; the buffer tanks are a first buffer tank 13 and a second buffer tank 14 which are connected in parallel, the vacuum pump is connected with the two buffer tanks and used for pumping negative pressure for the buffer tanks, and the volume of each buffer tank is 20L; the tail gas adsorption device 19 is connected with a vacuum pump through a pipeline and is used in tail gas131I, adsorption of gas to prevent pollution; the first buffer tank 13 and the second buffer tank 14 are used for exchangingStoring the adsorbed gas instead and performing volume setting; the activated carbon filter cartridge 12 is used for131And I, adsorbing the gas, namely preparing an activated carbon filter cartridge source.
The storage system comprises an iodine chamber storage chamber 11, a heating device and a corresponding monitoring device. Wherein the iodine chamber storage chamber 11 is used to store the gas generated by the gas generating system131I, gas; the monitoring equipment comprises temperature, pressure, humidity and radiation monitoring equipment. Wherein the working pressure of the iodine chamber storage chamber 11 is 1 plus or minus 0.01MPa, and the temperature is 50 ℃; the inner wall of the iodine chamber storage chamber is sprayed with polytetrafluoroethylene, the outer wall of the iodine chamber storage chamber is provided with a heat preservation layer, and the volume of the iodine chamber storage chamber is 6m3。
The first filter 4 and the second filter 9 are used for removing water vapor in the gas, and a crystal water type desiccant CaO desiccant is arranged in the first filter 4 and the second filter 9. The gas transmission pipeline is made of stainless steel, the inner wall of the gas transmission pipeline is made of mirror-surface stainless steel or sprayed with polytetrafluoroethylene, and the inner diameter of the gas transmission pipeline is preferably 1 cm.
Example 3
An iodine chamber system, the iodine chamber system comprising a gas generation system, an air supply system, an adsorption system and a storage system; wherein the gas generation system, the air supply system and the adsorption system are all connected with the storage system through pipelines;
the gas generation system is used for131Generating gas, which mainly comprises a reaction container 1, a peristaltic pump 2, a first circulating pump 3 and a first filter 4 which are positioned in a glove box, wherein the reaction container 1 is placed in a constant-temperature water bath with the temperature of 66 ℃; a gas replacing device capable of replacing gas in the glove box is arranged outside the glove box; the first filter 4 is located at the rear end of the reaction vessel 1 and is used for drying and removing water vapor in the gas generated by the reaction vessel 1, and the dried gas is driven into an iodine chamber storage chamber 11 of the storage system by a circulating pump. The reaction vessel 1 is provided with three interfaces, wherein one interface is connected with an iodine chamber storage chamber 11 through a gas transmission pipeline where the first filter 4 is located; the other two interfaces are respectively connected with a reaction product sample inlet pipe and a gas return pipe of the iodine chamber storage chamber 11; wherein the gas return pipe is a part for storing the iodine chamber in the chamber 11131I, refluxing the gas into the reaction container; the reaction product and the reaction formula in the reaction vessel 1 are as follows: 2Na131I+2HNO3+H2O2＝2NaNO3+2H2O+131I2(ii) a The peristaltic pump 2 is used for adding reaction products into the reaction container 1, controlling the reaction rate and the total amount, and the rotating speed of the peristaltic pump is adjustable within 0-30 mL/min. The first circulation pump 3 is used for circulating the reaction product generated in the reaction vessel 1131I2The gas is conveyed to the iodine chamber storage chamber 11 through a gas conveying pipeline, and the flow rate of the gas is adjustable at 0-30L/min.
The air supply system is mainly used for balancing or emptying the gas in an iodine chamber storage chamber 11 and mainly comprises a fan, a second filter 9, a water removal column 7, an activated carbon column 8, a regulating valve, a flowmeter and a one-way valve; wherein the blower is mainly used for pumping air into the iodine chamber storage chamber 11; the second filter 9, the dewatering column 7 and the activated carbon column 8 are used for purifying air; the regulating valve and the flow meter are used for controlling the pumping air flow rate; the one-way valve is used for controlling the on-off of the air flow and preventing the air from flowing backwards.
The adsorption system is positioned in the constant temperature box and used for preparing a filter cartridge source; the device mainly comprises an active carbon filter box 12, a tail gas adsorption device 19 and a buffer tank; the buffer tank comprises a first buffer tank 13 and a second buffer tank 14 which are connected in parallel, a vacuum pump is connected with the two buffer tanks and used for pumping negative pressure for the buffer tanks, and the volume of each buffer tank is 200L; the tail gas adsorption device 19 is connected with a vacuum pump through a pipeline and is used in tail gas131I, adsorption of gas to prevent pollution; the first buffer tank 13 and the second buffer tank 14 are used for alternately storing adsorbed gas and performing volume setting; the activated carbon filter cartridge 12 is used for131And I, adsorbing the gas, namely preparing an activated carbon filter cartridge source.
The storage system comprises an iodine chamber storage chamber 11, a heating device and a corresponding monitoring device. Wherein the iodine chamber storage chamber 11 is used to store the gas generated by the gas generating system131I, gas; the monitoring equipment comprises temperature, pressure, humidity and radiation monitoring equipment. Wherein the working pressure of the iodine chamber storage chamber is 1 plus or minus 0.01MPa, and the temperature is 80 ℃; the inner wall of the iodine chamber storage chamber is sprayed with polytetrafluoroethylene,the outer wall is provided with a heat-insulating layer, and the volume of the iodine chamber storage chamber is 1m3。
The first filter 4 and the second filter 9 are used for removing water vapor in the gas, and a crystal water type desiccant CaO desiccant is arranged in the first filter and the second filter. The gas transmission pipeline is made of stainless steel, the inner wall of the gas transmission pipeline is made of mirror-surface stainless steel or sprayed with polytetrafluoroethylene, and the inner diameter of the gas transmission pipeline is preferably 2 cm.
Example 4
An iodine chamber system, the iodine chamber system comprising a gas generation system, an air supply system, an adsorption system and a storage system; wherein the gas generation system, the air supply system and the adsorption system are all connected with the storage system through pipelines;
the gas generation system is used for131Generating gas, which mainly comprises a reaction container 1, a peristaltic pump 2, a first circulating pump 3 and a first filter 4, wherein the reaction container 1 is arranged in a constant-temperature water bath; a gas replacing device capable of replacing gas in the glove box is arranged outside the glove box; the first filter 4 is located at the rear end of the reaction vessel and is used for drying and removing water vapor in the gas generated by the reaction vessel 1, and the dried gas is driven into an iodine chamber storage chamber 11 of the storage system by a circulating pump. The reaction vessel 1 is provided with three interfaces, wherein one interface is connected with an iodine chamber storage chamber 11 through a gas transmission pipeline where the first filter 4 is located; the other two interfaces are respectively connected with a reaction product sample inlet pipe and a gas return pipe of the iodine chamber storage chamber 11; wherein the gas return pipe is a part for storing the iodine chamber in the chamber 11131I, refluxing the gas into the reaction container 1; the reaction product and the reaction formula in the reaction vessel 1 are as follows: 2Na131I+(CH3)2SO4＝Na2SO4+2CH3 131I; the peristaltic pump is used for adding reaction products into the reaction container, reaction rate and total amount are controlled, and the rotating speed of the peristaltic pump is adjustable within 0-30 mL/min. The first circulation pump 3 is used for circulating the reaction product generated in the reaction vessel 1131I2The gas is conveyed to the iodine chamber storage chamber 11 through a gas conveying pipeline, and the flow rate of the gas is adjustable at 0-30L/min.
The air supply system is mainly used for balancing or emptying the gas in an iodine chamber storage chamber 11 and mainly comprises a fan, a second filter 9, a water removal column 7, an activated carbon column 8, a regulating valve, a flowmeter and a one-way valve; wherein the blower is mainly used for pumping air into the iodine chamber storage chamber 11; the second filter 9, the dewatering column 7 and the activated carbon column 8 are used for purifying air; the regulating valve and the flow meter are used for controlling the pumping air flow rate; the one-way valve is used for controlling the on-off of the air flow and preventing the air from flowing backwards.
The adsorption system is positioned in the constant temperature box and used for preparing a filter cartridge source; the device mainly comprises an active carbon filter box 12, a tail gas adsorption device 19 and a buffer tank; the buffer tank comprises a first buffer tank 13 and a second buffer tank 14 which are connected in parallel, a vacuum pump is connected with the two buffer tanks and used for pumping negative pressure for the buffer tanks, and the volume of each buffer tank is 200L; the tail gas adsorption device is connected with the vacuum pump through a pipeline and is used in tail gas131I, adsorption of gas to prevent pollution; the first buffer tank 13 and the second buffer tank 14 are used for alternately storing adsorbed gas and performing volume setting; the activated carbon filter cartridge 12 is used for131And I, adsorbing the gas, namely preparing an activated carbon filter cartridge source.
The storage system comprises an iodine chamber storage chamber 11, a heating device and a corresponding monitoring device. Wherein the iodine chamber storage chamber 11 is used to store the gas generated by the gas generating system131I, gas; the monitoring equipment comprises temperature, pressure, humidity and radiation monitoring equipment. Wherein the working pressure of the iodine chamber storage chamber 11 is 1 plus or minus 0.01MPa, and the temperature is 70 ℃; the inner wall of the iodine chamber storage chamber 11 is sprayed with polytetrafluoroethylene, the outer wall is provided with a heat-insulating layer, and the volume of the iodine chamber storage chamber is 5m3。
The first filter 4 and the second filter 9 are used for removing water vapor in the gas, and a crystal water type desiccant CaO desiccant is arranged in the first filter 4 and the second filter 9. The gas transmission pipeline is made of stainless steel, the inner wall of the gas transmission pipeline is made of mirror-surface stainless steel or sprayed with polytetrafluoroethylene, and the inner diameter of the gas transmission pipeline is preferably 1.5 cm.

Claims (12)

1. An iodine chamber system, characterized in that the iodine chamber system comprises a gas generating system, an air providing system, an adsorption system and a storage system; wherein the gas generation system, the air supply system and the adsorption system are all connected with the storage system through pipelines;
the gas generation system is used for131Generating gas, which mainly comprises a reaction container, a peristaltic pump, a first circulating pump and a first filter, wherein the reaction container is positioned in a constant-temperature water bath; a gas replacing device capable of replacing gas in the glove box is arranged outside the glove box; the first filter is positioned at the rear end of the reaction container and used for drying and removing water vapor in the gas generated by the reaction container, and the dried gas is driven by the first circulating pump to enter an iodine chamber storage chamber of the storage system;
the air supply system is mainly used for balancing or emptying gas in an iodine chamber storage chamber and mainly comprises a fan, a second filter, a water removal column, an activated carbon column, a regulating valve, a flowmeter and a one-way valve; wherein the blower is mainly used for pumping air into the iodine chamber storage chamber; the second filter, the water removal column and the activated carbon column are used for purifying air;
the adsorption system is positioned in the constant temperature box and used for preparing a filter cartridge source; the device mainly comprises an active carbon filter box, a tail gas adsorption device and a buffer tank; the buffer tank is a first buffer tank and a second buffer tank which are connected in parallel, and the vacuum pump is connected with the two buffer tanks and used for pumping negative pressure for the buffer tanks; the tail gas adsorption device is connected with the vacuum pump through a pipeline and is used in tail gas131I, adsorbing gas; the first buffer tank and the second buffer tank are used for alternately storing adsorbed gas and performing volume setting;
the storage system comprises an iodine chamber storage chamber, heating equipment and corresponding monitoring equipment; wherein the iodine chamber storage chamber is for storing the gas generated by the gas generating system131I, gas; the monitoring equipment comprises temperature, pressure, humidity and radiation monitoring equipment.
2. The iodine chamber system of claim 1, wherein the reaction vessel is configured with three ports, one of the ports is connected to the iodine chamber storage compartment via a gas transfer line containing the first filterConnecting; the other two interfaces are respectively connected with the reaction product sample inlet pipe and a gas return pipe of the iodine chamber storage chamber; wherein the gas return pipe is a part for storing the iodine chamber131And I, refluxing the gas into the reaction vessel.
3. The iodine chamber system of claim 1, wherein the reaction product and reaction formula in said reaction vessel is:
2Na131I+Fe2(SO4)3＝2FeSO4+Na2SO4+131I2
or
2Na131I+H2SO4+H2O2＝Na2SO4+2H2O+131I2
Or
2Na131I+2HNO3+H2O2＝2NaNO3+2H2O+131I2
Or
2Na131I+(CH3)2SO4＝Na2SO4+2CH3 131I。
4. The iodine chamber system of claim 1, wherein preferably the reaction product and equation in said reaction vessel is:
2Na131I+Fe2(SO4)3＝2FeSO4+Na2SO4+131I2
or
2Na131I+(CH3)2SO4＝Na2SO4+2CH3 131I。
5. The iodine chamber system of claim 1, wherein the peristaltic pump is used for adding the reaction product into the reaction container, and the rotating speed of the peristaltic pump is adjustable within a range of 0-30 mL/min; the first circulating pump is used for circulating the waterProduced in a reaction vessel131I2The gas is conveyed to the iodine chamber storage chamber through a gas conveying pipeline, and the flow rate of the gas is adjustable at 0-30L/min.
6. The iodine chamber system of claim 1, wherein the gas transmission pipeline is a stainless steel pipeline, the inner wall of the gas transmission pipeline is mirror stainless steel or sprayed with polytetrafluoroethylene, and the inner diameter of the gas transmission pipeline is 0.5-3 cm.
7. The iodine chamber system of claim 1, wherein a crystalline water desiccant CaSO is disposed in said first and second filters4Or a CaO desiccant.
8. The iodine chamber system of claim 1, wherein the temperature of the incubator is between room temperature and 80 ℃.
9. The iodine chamber system of claim 1, wherein the number of the buffer tanks is 2, and the volumes of the buffer tanks are 20-200L respectively.
10. The iodine chamber system of claim 1, wherein an inner wall of the iodine chamber storage chamber is spray-coated with teflon, and an outer wall thereof is provided with an insulation layer.
11. The iodine chamber system of claim 1, wherein the temperature of the thermostatic water bath is 64-66 ℃.
12. The iodine chamber system of claim 1, wherein said iodine chamber storage chamber has a volume of 1-6 m3(ii) a Wherein the working pressure of the iodine chamber storage chamber is 1 plus or minus 0.01MPa, and the temperature is between room temperature and 80 ℃.
CN202011405985.8A 2020-12-03 2020-12-03 Iodine chamber system Active CN112429704B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011405985.8A CN112429704B (en) 2020-12-03 2020-12-03 Iodine chamber system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011405985.8A CN112429704B (en) 2020-12-03 2020-12-03 Iodine chamber system

Publications (2)

Publication Number Publication Date
CN112429704A true CN112429704A (en) 2021-03-02
CN112429704B CN112429704B (en) 2022-03-11

Family

ID=74691660

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011405985.8A Active CN112429704B (en) 2020-12-03 2020-12-03 Iodine chamber system

Country Status (1)

Country Link
CN (1) CN112429704B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113856586A (en) * 2021-08-20 2021-12-31 中国原子能科学研究院 Device for gas-liquid conversion and gas-liquid two-phase online sampling of iodine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107155A (en) * 1960-06-23 1963-10-15 Abbott Lab Radioactive iodine process
CN110544544A (en) * 2019-09-25 2019-12-06 中国原子能科学研究院 Device and method for continuously generating iodine steam

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107155A (en) * 1960-06-23 1963-10-15 Abbott Lab Radioactive iodine process
CN110544544A (en) * 2019-09-25 2019-12-06 中国原子能科学研究院 Device and method for continuously generating iodine steam

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113856586A (en) * 2021-08-20 2021-12-31 中国原子能科学研究院 Device for gas-liquid conversion and gas-liquid two-phase online sampling of iodine
CN113856586B (en) * 2021-08-20 2022-12-13 中国原子能科学研究院 Device for gas-liquid conversion and gas-liquid two-phase online sampling of iodine

Also Published As

Publication number Publication date
CN112429704B (en) 2022-03-11

Similar Documents

Publication Publication Date Title
CN112429704B (en) Iodine chamber system
Anderson et al. The density of water adsorbed by lithium‐, sodium‐, and potassium‐bentonite
JP2012506257A5 (en)
CN109781579A (en) A kind of hydrogen storage material cycle life auto testing instrument and test method
CN110954939A (en) Tritium monitor laboratory calibrating device
CN213086003U (en) Cell culture device for mesenchymal stem cell culture
CN203095896U (en) Dynamic box-type composting device for determining compost gas yield
CN206876605U (en) mBq/m3The radon concentration monitoring equipment of magnitude
CN216062117U (en) Automatic separation system for radioactive nuclide
CN201971837U (en) Cell radon exposure toxicant contamination experiment device
CN105136602B (en) Activated carbon comprehensive gas adsorption instrument
CN204924838U (en) Gas absorption appearance is synthesized to active carbon
CN113899877A (en) Soil carbon sequestration detection device and method
CN107807380B (en) Instrument coefficient scale device and method for radon measurement by activated carbon box
CN208603750U (en) A kind of desulfurization wastewater distributor
CN218842198U (en) Cell culture case
CN207502338U (en) A kind of device for fast detecting of activated carbon adsorption rate and desorption rate
CN215050325U (en) Anaerobe culture tank
Gao et al. Radon measurement in liquid scintillator with nitrogen stripping method
CN205204816U (en) Tritium gas purification system
CN109553267A (en) A kind of organic matter apparatus for continuous treatment and its processing method
CN220550185U (en) Plant cell culture device
CN217561239U (en) Carbon tetrachloride desorption tester
CN215353461U (en) Parallel synthesis reaction instrument with efficient backflow function
CN214892476U (en) Geotechnical drying equipment for geological engineering

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant