Variable-diameter dielectric barrier reactor for treating volatile organic pollutants
A volatile organic and dielectric barrier technology, applied in the chemical industry, can solve the problems of only low-concentration organic waste gas treatment, inability to mineralize waste gas, secondary pollution, etc., achieve reduction of arc discharge and spark discharge, and improve the phenomenon of coking, The effect of reducing by-products
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Embodiment 1
[0032] This embodiment relates to a variable-diameter dielectric barrier reactor for treating volatile organic pollutants, the structure of which is as follows figure 1 Shown in (b); described reactor is made of inner and outer discharge spaces (7,8) formed by outer electrode, inner electrode (ground electrode) 3 and inner and outer two-layer medium (4,5), and described outer The electrode is wrapped on the outer dielectric wall and connected to the ground wire; the inner electrode is fixed on the central axis of the reactor and connected to the high-voltage power supply; the polluted gas enters from the outer discharge space, and after preliminary purification, enters the inner The discharge space is thoroughly purified and finally forms CO 2 and H 2 O is discharged from the end of the inner discharge space.
[0033] Among them, 1 is the air inlet, 2 is the air outlet, 3 is the ground electrode, 4 is the inner dielectric, 5 is the outer dielectric, 6 is the high voltage ele...
Embodiment 2
[0043] This embodiment relates to a variable-diameter dielectric barrier reactor for treating volatile organic pollutants, the structure of which is as follows figure 1 as shown in (b);
[0044] This embodiment relates to the treatment of waste gas containing formaldehyde by using the variable-diameter dielectric barrier reactor for the treatment of volatile organic pollutants according to the present invention;
[0045] Air volume 500ml / L, concentration 2000mg / m 3 , relative humidity 40-50%, applied voltage 11.0kV. The implementation steps and conditions are the same as in Example 1. After the discharge is stable for 6 hours, take a sample and analyze it, measure the intake and output concentrations of styrene, the amount of carbon dioxide and carbon monoxide generated, and obtain the conversion rate and mineralization rate. The processing results are compared in the following table 2 express:
[0046] Table 2
[0047]
[0048] From the results in Table 2 above, it can...
Embodiment 3
[0050] This embodiment relates to a variable-diameter dielectric barrier reactor for treating volatile organic pollutants, the structure of which is as follows figure 1 as shown in (b);
[0051] This example involves the use of variable diameter dielectric barrier reactors to treat volatile organic pollutants under different applied voltages
[0052] The treatment object is styrene waste gas with a fixed concentration, the concentration is 2000mg / m 3 , gas volume 500ml / L, relative humidity 40-50%, the total discharge space of the reactor used is 44.2cm 3 .
[0053] Step is the same as embodiment 1, after discharge is stable 6 hours, sampling analysis is carried out, and the intake and output concentration of styrene are measured, the amount of carbon dioxide and carbon monoxide generated, conversion rate and mineralization rate are obtained, and the results are shown in table 3 below:
[0054] table 3
[0055]
[0056] As can be seen from the results in Table 3 above, d...
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