Chlorine utilization rate measurement device and method
A technology of measuring device and measuring method, which is applied in the field of chemical laser, can solve the problems of metering the utilization rate of chlorine gas, unusability, weakening of transmitted light intensity of the test pool, etc.
Inactive Publication Date: 2015-06-17
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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Problems solved by technology
On the one hand, the existence of dust particles leads to the weakening of the transmitted light intensity of the test cell, and the error of conventional absorption spectroscopy is too large to obtain effective data.
On the other hand, the amount of iodine vapor and residual chlorine gas is unknown, which makes it impossible to measure the utilization rate of chlorine gas using a venturi flow meter
In addition, iodine vapor has different levels of absorption at 400-600nm and chlorine gas at 300-390nm. The dual-wavelength absorption spectroscopy method of patent CN101726337 is not suitable for this because of the inability to select a suitable reference light.
Therefore, the chlorine gas utilization rate of the chemical iodine source can only use the weight loss of the system chemical reaction to calculate its average value, and cannot be dynamically measured.
Method used
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Embodiment 1
[0056] According to the absorption properties of chlorine and iodine vapor, 340nm incident light is selected as the absorption wavelength of chlorine gas and 490nm incident light is selected as the absorption wavelength of iodine vapor.
[0057] The specific operation steps are as follows:
[0058] The first step is to heat the test cell to 430K and let it stabilize for 30 minutes.
[0059] The second step is to set the acquisition time to 30 seconds and the sampling frequency to 1 Hz.
[0060] The third step is to adjust the light path. Maximize the signal received by the CCD.
[0061] The fourth step is data collection and saving as the initial light intensity.
[0062] The fifth step is to open the diluent gas and chlorine gas valves, and at the same time collect data and save it as the transmitted light intensity.
[0063] The sixth step ends the experiment and data processing.
[0064] The initial light intensity spectral data of 340nm and 490nm are 1731, 3778 respec...
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Abstract
The present invention relates to an oxygen iodine laser chemical iodine source chlorine utilization rate measurement method, and belongs to the field of chemical laser. An iodine out-let tube of an oxygen iodine laser is symmetrically provided with a first cylinder body and a second cylinder body, the two cylinder bodies are coaxially arranged, the axial direction of the two cylinder bodies is vertical to the axial direction of the iodine out-let tube, and is intersected with the axis of the iodine out-let tube, the inner ends of the two cylinder bodies are communicated with the iodine out-let tube, and a measurement pool is formed by the two cylinder bodies, the iodine out-let tube part communicated with the two cylinder bodies and a test window. The experimental results show that the method can effectively solve the problem of inaccurate measurement and even infeasibility and the like of the measurement caused by dust particles in the air flow, and the method is simple in operation and easy to implement.
Description
technical field [0001] The invention belongs to the technical field of chemical laser. The invention relates to a method for measuring the utilization rate of chlorine gas of a chemical iodine source based on an absorption spectrum, in particular to a method for measuring the utilization rate of chlorine gas of a chemical iodine source for an oxygen-iodine laser. Through the measurement method, the problem that a large amount of dust particles exist in the iodine-containing gas flow of an oxygen-iodine chemical laser using a chemical iodine source, which leads to inaccurate or even impossible measurement, is solved. The chemical iodine source of the oxygen-iodine laser is limited by its working principle, and there is inevitably a large amount of dust in the iodine supply airflow. It is difficult to measure the residual chlorine gas flow and the iodine supply flow rate accurately by the commonly used single-wavelength absorption spectroscopy, because the presence of dust It w...
Claims
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Login to View More IPC IPC(8): G01N21/31G01F9/00
Inventor 赵伟力张莹莹张岳龙张朋房本杰金玉奇
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI