A kind of catalytic combustion system and catalytic combustion method
Technical field
The present invention relates to waste gas treatment equipment and method, particularly a kind of catalytic combustion system and catalytic combustion method.
Background technology
Organic exhaust gas of a great variety, composition is complicated, concentration is various, therefore, its improvement has larger difficulty.At present, the purification treatment technique that cleaning equipment for waste organic gas adopts has Production by Catalytic Combustion Process, active carbon adsorption, condensation method, absorption process and plasma oxidation method etc., solve the pollution of organic exhaust gas to environment to a certain extent, but also there are problems in above purification treatment device.
Production by Catalytic Combustion Process uses extensively, is carried out by organic exhaust gas burning and carrying out catalysis by catalyst, make organic exhaust gas be converted into CO2 and H2O under uniform temperature.There is burning at existing catalytic combustion system insufficient, too rely on extra power heat supply, easily cause secondary pollution problems.
Summary of the invention
The present invention proposes a kind of catalytic combustion system and catalytic combustion method, solve existing VOCs treatment not thorough, and easily cause secondary pollution problems.
The present invention is solved by following technical proposals:
A kind of catalytic combustion system, comprise waste gas inlet, chimney, catalytic combustion system and adsorbent equipment, described catalytic combustion system comprises catalytic combustion blower fan and heat exchanger, and described adsorbent equipment comprises absorption blower fan and is built-in with the adsorbent bed of active carbon; Described waste gas inlet is communicated with a filter by a pipeline, is then communicated with the enterprising gas port of adsorbent bed by a pipeline, and described absorption blower fan is communicated with the lower gas outlet of adsorbent bed by a pipeline; Adsorbent bed is also provided with gas outlet, and upper gas outlet is connected with heat exchanger by a pipeline; Heat exchanger is communicated with the gas outlet of catalytic combustion blower fan by a pipeline, and the air inlet of described catalytic combustion blower fan is communicated with waste gas inlet by a pipeline; Described heat exchanger is communicated with chimney by a pipeline.
Utilize the catalytic combustion method of above-mentioned catalytic combustion system, comprise the following steps:
Step one, prefiltration, described waste gas enters catalytic combustion system by waste gas inlet, tentatively filters through filter;
Step 2, adsorbent bed adsorb, and enter adsorbent bed through the preliminary waste gas filtered under the drive of absorption blower fan, and through adsorbent bed by the Adsorption of Organic in waste gas, the gas be purified after absorption is discharged through chimney;
Step 3, hot gas desorption burn, and thermal current is sent into adsorbent bed by catalytic combustion blower fan, makes the organic pollution that active carbon adsorbs be heated, and through burning and oxidation Decomposition, are converted into carbon dioxide and water, are discharged by chimney;
The heat of step 4, organic pollution decomposition release is used further to heating adsorption bed and carries out desorption after over-heat-exchanger reclaims, and forms thermal cycle.
Known by describing above, compared with prior art, tool of the present invention has the following advantages in the present invention:
Filtration, charcoal absorption, thermal current desorption and catalytic combustion combine by the present invention, form effective waste gas treatment process, catalytic combustion system formation absorption-by thermal desorption burning-release heat--by the inside self-balancing state of thermal desorption burning-toxic emission, greatly improve exhaust treatment efficiency, and the extra power of effectively saving needed for exhaust-gas treatment, stops secondary emission and pollutes.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
With reference to Fig. 1, a kind of catalytic combustion system, comprise waste gas inlet 1, chimney 2, catalytic combustion system and adsorbent equipment, described catalytic combustion system comprises catalytic combustion blower fan 31 and heat exchanger 32, and described adsorbent equipment comprises absorption blower fan 41 and is built-in with the adsorbent bed 42 of active carbon; Described waste gas inlet 1 is communicated with a filter 5 by a pipeline, is then communicated with the enterprising gas port of adsorbent bed 42 by a pipeline, and described absorption blower fan 41 is communicated with the lower gas outlet of adsorbent bed 42 by a pipeline; Adsorbent bed 42 is also provided with gas outlet, and upper gas outlet is connected with heat exchanger 32 by a pipeline; Heat exchanger 32 is communicated with the gas outlet of catalytic combustion blower fan 31 by a pipeline, and the air inlet of described catalytic combustion blower fan 31 is communicated with waste gas inlet 1 by a pipeline; Described heat exchange 32 device is communicated with chimney by a pipeline.
Utilize the catalytic combustion method of above-mentioned catalytic combustion system, comprise the following steps:
Step one, prefiltration, described waste gas enters catalytic combustion system by waste gas inlet 1, tentatively comes through filter 5;
Step 2, adsorbent bed adsorb, and enter adsorbent bed 42 through the preliminary waste gas filtered under the drive of absorption blower fan 41, through adsorbent bed 42 by the Adsorption of Organic in waste gas, be purified and discharge through chimney 2 after absorption;
Step 3, hot gas desorption burn, and thermal current is sent into adsorbent bed by catalytic combustion blower fan 31, makes the organic pollution that active carbon adsorbs be heated, and through burning and oxidation Decomposition, are converted into carbon dioxide and water, are discharged by chimney 2;
The heat that step 4, organic pollution decompose release is used further to heating adsorption bed 42 after heat exchange 32 device reclaims, and forms thermal cycle.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.