High-efficiency energy-saving absorption system for industrial volatile organic pollutants
Technical field
The invention belongs to the adsorption system field, especially a kind of high-efficiency energy-saving absorption system for industrial volatile organic pollutants.
Background technology
Existing industrial volatile organic pollutants adsorption system main device comprises filter, spark arrester, adsorbent bed and absorption blower fan, said apparatus connects by pipeline successively, valve is installed on the pipeline, wherein a main adsorbing adsorbent bed generally adopts active carbon as adsorbent, the primary structure of adsorbent bed comprises the air intake expansion mouth, active-carbon bed body and air-out choke, the two sides that active-carbon bed body is relative connects respectively air intake expansion mouth and air-out choke, be fixed with air distribution plate at the air intake expansion mouth, multilayer active carbon dividing plate is set in the active-carbon bed body is used for placing active carbon, after industrial volatile organic pollutants reaches capacity in the adsorbent bed, will carry out desorption and regeneration, the industrial volatile organic pollutants that is about to adsorb on the active carbon gets off by the hot-air desorption, so that active carbon is recycling, adsorbent bed needs higher temperature when carrying out desorption process, generally before the adsorbent bed air inlet, electric heating equipment is set, reach the temperature that is suitable for desorption so that enter the hot-air of adsorbent bed, but each desorption all is to use electric heating equipment, energy consumption is larger, operating cost is higher, add in the catalytic combustion technological process in absorption, do not utilize the heat energy of catalytic combustion also can cause waste and can produce thermal pollution to environment.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of high-efficiency energy-saving absorption system for industrial volatile organic pollutants is provided, this adsorption system is safe and reliable, has reduced the consumption of electric energy, has reduced operating cost, has improved treatment effeciency.
The present invention solves its technical problem and is achieved through the following technical solutions:
A kind of high-efficiency energy-saving absorption system for industrial volatile organic pollutants, comprise the filter that connects by pipeline successively, spark arrester, adsorbent bed and absorption main air blower, this adsorbent bed comprises the air intake expansion mouth, active-carbon bed body and air-out choke, the two sides that active-carbon bed body is relative connects respectively air intake expansion mouth and air-out choke, be fixed with air distribution plate at the air intake expansion mouth, multilayer active carbon dividing plate is set in the active-carbon bed body, its active-carbon bed body two lateral walls all is set to have the sidewall of hollow structure, the active carbon dividing plate is set to have the active carbon dividing plate of hollow structure, active carbon dividing plate with hollow structure is communicated with the sidewall with hollow structure, has on the two side of hollow structure to be respectively arranged with hot blast import and hot-blast outlet.
And the small-caliber end of described air intake expansion mouth connects spark arrester by blast pipe, and the small-caliber end of air-out choke connects the absorption main air blower by discharge pipe.
And described air-out choke bottom offers manhole.
And described active-carbon bed body top offers the explosion-proof relief mouth.
Advantage of the present invention and beneficial effect are:
1, the active-carbon bed body two lateral walls of this high-efficiency energy-saving absorption system for industrial volatile organic pollutants all is set to have the sidewall of hollow structure, the active carbon dividing plate is set to have the active carbon dividing plate of hollow structure, active carbon dividing plate with hollow structure is communicated with the sidewall with hollow structure, have on the two side of hollow structure and be respectively arranged with hot blast import and hot-blast outlet, the hot blast import of this kind structure connects the outlet of catalytic bed tail gas, desorption process utilizes catalysis tail gas heating adsorbent bed, thereby significantly shortened desorption time, reduced power consumption, take full advantage of the heat energy that catalyticing combustion process produces, environmental protection, and greatly reduce equipment operating cost, improved exhaust-gas treatment efficient.
2, the air-out choke bottom of this high-efficiency energy-saving absorption system for industrial volatile organic pollutants offers manhole, is convenient for changing active carbon, and maintenance of equipment is safeguarded simple.
3, the active-carbon bed body top of this high-efficiency energy-saving absorption system for industrial volatile organic pollutants offers the explosion-proof relief mouth, when adsorbent equipment inside meets accident superpressure, can pass through the pressure release of explosion-proof relief mouth, improves security and the reliability of this device.
4, this high-efficiency energy-saving absorption system for industrial volatile organic pollutants can effectively solve at the northern area winter temperature lowly, and desorption extending heating time, power consumption increase, even the technical barrier that the desorption flow process can not normally be moved.
5, the present invention is simple in structure, and design science is reasonable, and is safe and reliable, reduced the consumption of electric energy, shortened the desorption cycle of operation, reduced operating cost, is a kind of high-efficiency energy-saving absorption system for industrial volatile organic pollutants that national energy-saving reduces discharging state basic policy that meets.
Description of drawings
Fig. 1 is connection block diagram of the present invention;
Fig. 2 is the structural representation of adsorbent bed of the present invention;
Fig. 3 is the right view (omitting air-out choke and Alveolate activated carbon capable) of Fig. 2;
Fig. 4 is the top view of Fig. 2.
The specific embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of high-efficiency energy-saving absorption system for industrial volatile organic pollutants, comprise the filter that connects by pipeline successively, spark arrester, adsorbent bed and absorption main air blower, this adsorbent bed comprises air intake expansion mouth 12, active-carbon bed body 5 and air-out choke 6, the small-caliber end of air intake expansion mouth connects blast pipe 1, this blast pipe can connect spark arrester by threeway and import of valve, filter, the exhaust gas source of industrial volatile organic pollutants achieves a butt joint, another interface connects the hot gas source up to standard that the combustion catalysis bed was processed, the small-caliber end of air-out choke connects discharge pipe 7, this discharge pipe can connect absorption blower fan and desorption blower fan, air-out choke bottom offers manhole 8, this manhole is equipped with the door that reloads, active-carbon bed body top offers explosion-proof relief mouth 3, the two sides that active-carbon bed body is relative connects respectively air intake expansion mouth and air-out choke, be fixed with air distribution plate 11 at the air intake expansion mouth, this air distribution plate can be arranged according to the actual condition at scene, it mainly is evenly to guide the waste gas that contains industrial volatile organic pollutants on the active carbon dividing plate active carbon, multilayer active carbon dividing plate is set in the active-carbon bed body, place Alveolate activated carbon capable 10 on this active carbon dividing plate, the uniform thermometric thermal resistance connector 14 that is provided with on the active-carbon bed body sidewall, be used for connection thermal resistor, thereby each temperature data of very first time monitoring adsorbent bed, it is that the steel pipe of rectangle is as support that four jiaos of active-carbon bed bodies adopt the cross section, the moulding of convenient active-carbon bed body, for the connection of follow-up structure is laid a solid foundation, innovative point of the present invention is: active-carbon bed body two lateral walls all is set to have the sidewall 13 of hollow structure, the active carbon dividing plate is set to have the active carbon dividing plate 9 of hollow structure, active carbon dividing plate with hollow structure is communicated with the sidewall with hollow structure, have on the two side of hollow structure and be respectively arranged with hot blast import 2 and hot-blast outlet 4, the active carbon dividing plate with hollow structure after the connection and the sidewall with hollow structure can reach hot blast and enter after the active carbon dividing plate with hollow structure and sidewall with hollow structure flow from the hot blast import and discharge this hot blast import from hot-blast outlet, hot-blast outlet, the sidewall structures that has the active carbon dividing plate of hollow structure and have a hollow structure is mainly used in introducing catalytic combustion tail gas heating adsorbent bed metal structure altogether.If need to this adsorbent equipment fast cooling, to improve service efficiency, can also directly introduce air by threeway and blower fan from the hot blast import and cool off, thereby enter again adsorption process from desorption process more quickly in use.
Below by embodiment the energy-saving effect of native system is described, this adsorption system adopts separate unit adsorbent bed operation desorption flow process to calculate, and prior art needs 4h usually, and incipient stage and ending phase amount to and need to open the electrical heating time and be no less than 3h.Native system can make the desorption flow process shorten to 3h, and only the incipient stage need to be opened electrical heating and is no more than 1h, and therefore, it is about 67% to economize on electricity, and the desorption cycle shortens 25%.
After the absorption of native system Alveolate activated carbon capable is saturated, switching is entered desorption process, after closing and open corresponding valve, can pass into hot blast to adsorbent bed metal structure interlayer through the import of charcoal bed hot blast, hot blast is in each interlayer after the circulation, discharge from the hot-blast outlet of active-carbon bed body, like this can be by inside and outside simultaneously heating, the desorption firing rate is promoted, the desorption process is accelerated, and thermal source had both taken full advantage of system's waste heat from the gas up to standard with heat energy of catalytic combustion system discharging, reduce again the consumption of electric energy, met the state basic policy that national energy-saving reduces discharging.