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Bromine trifluoride and load gas batching method and device

A technology of bromine trifluoride and loading, which is applied in the direction of chemical instruments and methods, mixing methods, transportation and packaging, etc., can solve the problems affecting the economy and safety of equipment operation, and the decline of equipment operation performance, and achieve the flow rate of batching gas and Precise ratio, simple method and device, and high reliability

Pending Publication Date: 2021-08-17
RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The deposition of these powders in the equipment will cause the decline of the equipment's operating performance and affect the operating economy and safety of the equipment.

Method used

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  • Bromine trifluoride and load gas batching method and device
  • Bromine trifluoride and load gas batching method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, a bromine trifluoride and load gas dosing device includes a bromine trifluoride supply container 1 and a load gas supply container 2, both of which communicate with radioactive equipment 4 through pipelines and a control mechanism 3. The control mechanism 3 includes a bromine trifluoride flow metering control device 31a arranged on the pipeline between the bromine trifluoride supply container 1 and the radioactive equipment 4, and a bromine trifluoride flow metering control device 31a arranged between the load gas supply container 2 and the radioactive equipment 4 Load gas flow metering controller device 31b on the pipeline.

[0037] The bromine trifluoride flow metering control device 31a is a critical flow nozzle; the load gas flow metering controller device 31b is a thermal gas mass flow controller.

[0038] The carrier gas in the carrier gas supply container 2 is iodine heptafluoride.

Embodiment 2

[0040] Such as figure 2 As shown, a bromine trifluoride and load gas dosing device is characterized in that: it includes a bromine trifluoride supply container 1 and a load gas supply container 2, both of which communicate with radioactive equipment 4 through pipelines and a control mechanism 3 .

[0041] The control mechanism 3 includes a mixing ingredient container 32 communicated with the radioactive equipment 4 through a mixed gas flow controller device 31c, the bromine trifluoride supply container 1 and the load gas supply container 2 are respectively communicated with the mixing ingredient container 32, and communicated with each other. Valves 33 are arranged on the pipelines.

[0042] The mixed gas flow metering controller device 31c uses a regulating valve and a critical flow nozzle connected in series in the pipeline.

[0043] The carrier gas in the carrier gas supply container 2 is iodine heptafluoride.

Embodiment 3

[0045] Based on embodiment 1 device, a kind of bromine trifluoride and load gas batching method comprise the following steps:

[0046] The bromine trifluoride gas produced by gasification from the bromine trifluoride supply container 1 flows through the critical flow nozzle, and the nozzle is used to control and measure the bromine trifluoride gas flow rate. The bromine trifluoride molar flow rate is X=kP, k P is a constant related to the shape and diameter of the nozzle and the physical properties of bromine trifluoride, which can be given by calculation or actual calibration, and P is the pressure in front of the nozzle. If the flow coefficient k of the nozzle for bromine trifluoride gas is 0.0002 mol / (h·Pa), and the pressure in front of the nozzle is 500 Pa, then the flow rate of bromine trifluoride gas flowing through the nozzle can be calculated as 0.1 mol / h.

[0047] Gasification of iodine heptafluoride gas from the load gas iodine heptafluoride supply container flows th...

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Abstract

The invention discloses a bromine trifluoride and load gas batching method and device, and the device comprises a bromine trifluoride feeding container and a load gas feeding container which are communicated with a radioactive device through a pipeline and a regulation and control mechanism; the regulation and control mechanism can be a combination of a bromine trifluoride flow metering control device and a load gas flow metering controller device; and the device can also be a combination of a mixed gas flow metering controller device, a mixed batching container and a valve. According to different adjusting mechanisms, the batching method comprises the following two modes: respectively controlling and metering the flow rates of the two material flows, then mixing and supplying the material flows into radioactive equipment, and firstly mixing the two gas flows in proportion, then metering the flow rate of the mixed gas and supplying the mixed gas into the radioactive equipment. The device can be used for burdening of bromine trifluoride and load gas flow and proportion in a large range, and the burdening gas flow and proportion can be controlled accurately; and the method and the device are simple, convenient and high in reliability.

Description

technical field [0001] The invention belongs to the technical field of radioactive decontamination, and in particular relates to a method and device for batching bromine trifluoride and load gas. Background technique [0002] During the long-term operation of radioactive equipment, a large amount of radioactive powder will be generated inside. The deposition of these powders in the equipment will cause the decline of the operation performance of the equipment, and affect the operation economy and safety of the equipment. Therefore, it is necessary to try to remove the radioactive deposit powder in the equipment. Mixing the load gas and bromine trifluoride gas in a certain proportion and passing them into the equipment together can effectively reduce the consumption of bromine trifluoride and increase the utilization rate of bromine trifluoride. Therefore, there is an urgent need for a device and method to accurately control the ratio and flow rate of the two streams in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F15/02B01F15/04B01F3/02B08B9/093B01F23/10
CPCB08B9/093B01F23/191B01F23/19B01F35/714B01F35/712B01F35/7179B01F35/883
Inventor 冯申杨光贾延辉贺邓许彦赵冠宇
Owner RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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