A kind of low-temperature plasma waste gas treatment device
Technical field
The invention belongs to technical field of waste gas treatment, it is related to a kind of low-temperature plasma waste gas treatment device.
Background technology
Waste gas refers to the poisonous and hazardous gas that the mankind discharge in production and life process.Particularly chemical plant, steel
Factory, pharmaceutical factory and coking plant and oil plant etc., the exhaust gas smell of discharge are big, severe contamination environment and influence health, respectively
The industrial waste gas of class manufacturing enterprise discharge is the important sources of atmosphere pollution.If big capacity industrial waste gas it is unprocessed it is up to standard after
Air is entered, necessarily declines atmosphere quality, serious harm is carried out to human body health care belt, huge damage is caused to national economy
Lose, waste gas include organic exhaust gas, inorganic waste gases and foul waste gas, mainly including various hydro carbons, alcohols, aldehydes, acids, ketone and
Amine, oxysulfide, nitrogen oxides, oxycarbide, halogen and its compound etc..
The common method of current exhaust-gas treatment has absorption process, absorption method, catalysis burning, bioanalysis etc., used by these methods
Equipment is more, technique is cumbersome, energy consumption is big.
Non-thermal plasma trap is the hot spot technology that gaseous contaminant administers neck in recent years.Compared to traditional purification of air
Technology, lower temperature plasma technology has that short handling process, efficiency high, energy consumption are low, secondary pollution is few, the spy such as applied widely
Point.Plasma is the admixture of electronics, negative ions, excited atom, atom and free radical.The state of plasma
Depend primarily on the physical chemistry parameter such as its chemical composition, particle density and particle temperature, the wherein density and temperature of particle
It is two most basic parameters of plasma.In plasma environment, various chemical reactions are entered under highly excited level
It is capable, it is more more than active particle species produced by common chemical reaction, activity is stronger, be easier to and the pollutant in waste gas
React, cause that contaminant molecule is decomposed within a short period of time, so as to reach the purpose of degradation of contaminant.
In order to further improve efficiency of the low temperature plasma in waste gas treatment process, a kind of low-temperature plasma is now designed
Body emission-control equipment.
The content of the invention
It is an object of the invention to provide a kind of low-temperature plasma waste gas treatment device, the waste gas of generation passes sequentially through pre-
Waste gas can be processed after processing unit and plasma reaction device, solve low-temperature plasma efficiency in processing procedure
Low and high energy consumption problem.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of low-temperature plasma waste gas treatment device, including pretreatment unit and plasma reaction device;
The pretreatment unit includes pre-washing case, cyclic water tank and filter box;
The case that pre-washes to entering the waste gas in pretreatment unit for anticipating;
The cyclic water tank is connected with the discharge outlet for pre-washing case, and the sewage that will be pre-washed in case is flowed into cyclic water tank;
The filter box is connected with the gas outlet for pre-washing case, for the gas flowed out through gas outlet to be filtered;
The ionic reaction device is connected with filter box, and the gas of the filter box body outflow is filled through plasma reaction successively
Demister, dedusting plate and condenser pipe in putting carry out after-treatment, and the waste gas of the condenser pipe outflow is filled in preionization plasma
The number of times put and increase collision in low-temperature plasma device.
Further, the case that pre-washes is provided with spraying zone, packing area and spray liquid race way, the spray from top to bottom
Drenching area is used to spray the gas in packing area, is fallen into spray liquid race way through the liquid after sprinkling.
Further, it is provided with liquid level gauge, electric heater and temperature sensor in the cyclic water tank, the liquid level gauge,
Temperature sensor is respectively used to detect the water level in cyclic water tank, water temperature that the electric heater is used for cyclic water tank
Interior water is heated.
Further, the discharge outlet for pre-washing case and gas outlet are located at the bottom and top for pre-washing case respectively.
Further, the ionic reaction device includes air inlet and gas outlet, and the air inlet is used with gas outlet
Pyramidal structure, is provided with gas concentration automatic tester at the gas outlet, examined for the concentration to the gas after treatment
Survey.
Further, the air inlet of the ionic reaction device is to being disposed with demister, dedusting plate, cold between gas outlet
Condenser, preionization plasma apparatus and low-temperature plasma device.
Further, the dedusting plate is less than 1mm with the inwall gap of plasma reaction device, in the table of the dedusting plate
Face uses crimp design, may filter that the suspended particulate in waste gas.
Further, the condenser includes the outlet of compressor interface, S types condenser pipe and dry gas.
Further, the preionization plasma apparatus and low-temperature plasma device are structure, size and shape identical
Pipe, the angle between quadrilateral structure in the preionization plasma apparatus and low-temperature plasma device is 45 °, for increasing
Plus collision and the frequency of exposure of plasma.
Beneficial effects of the present invention:
Waste gas can be effectively gone in removing exhaust gas by pretreatment unit in the present invention soluble gas and the ash of bulky grain
Dirt so that the organic vapor concentrations reduction in waste gas;By between the air inlet of plasma reaction device and gas outlet successively
Demister, dedusting plate and condenser are provided with, waste gas can be processed again;Centered by being filled in plasma reaction
Shape size is identical and the inclined preionization plasma apparatus of angle and low-temperature plasma device so that filled through preionization plasma
Put and collided through low-temperature plasma device again after colliding, increase the number of times of plasma collision, and then improve plasma
The exhaust treatment efficiency of body, the characteristics of with simple structure, efficiency high and low energy consumption.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, uses required for being described to embodiment below
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, can also obtain other attached according to these accompanying drawings
Figure.
Fig. 1 is a kind of low-temperature plasma waste gas treatment device schematic diagram of the invention;
Fig. 2 is condenser schematic diagram in a kind of low-temperature plasma waste gas treatment device of the invention;
Fig. 3 is the schematic diagram of preionization plasma apparatus and low-temperature plasma device in the present invention;
In accompanying drawing, the list of parts representated by each label is as follows:
1- pretreatment units, 2- plasma reaction devices, 11- pre-washes case, 12- cyclic water tanks, 13- filter boxs, 21-
Demister, 22- dedusting plates, 23- condensers, 231- compressor interfaces, 232-S type condenser pipes, the outlet of 233- dry gas, 24-
Preionization plasma apparatus, 25- low-temperature plasma devices, 26- gas concentration automatic testers.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refer to shown in Fig. 1, the present invention is a kind of low-temperature plasma waste gas treatment device, including the He of pretreatment unit 1
Plasma reaction device 2, the pretreatment unit 1 includes pre-washing case 11, cyclic water tank 12 and filter box 13;Pre-wash case
11 are provided with spraying zone, packing area and spray liquid race way from top to bottom, and spraying zone is used to spray the gas in packing area
Spill, fallen into spray liquid race way through the liquid after sprinkling;The bottom for pre-washing case 11 is provided with discharge outlet, discharge outlet and circulation
The water inlet connection of water tank 12, flows into cyclic water tank 12 for will pre-wash the spray liquid in case 11;
Cyclic water tank 12 is connected with water pipe, and liquid level is provided with for supplementing or replacing in the water in water tank, cyclic water tank 12
Meter, electric heater and temperature sensor, for the water in cyclic water tank 12 to be supplemented and heated in time.
The top for pre-washing case 11 is provided with gas outlet, and gas outlet is connected with filter box 13, for that will be flowed through gas outlet
The gas for going out is filtered, and the top gas outlet of filter box 13 passes through pipeline with the sidepiece air inlet of plasma reaction device 2
Connection, plasma reaction device 2 is cylindric, and demister 21 is provided with the air inlet of plasma reaction device 2 for removing
Or the moisture and dust carried in the gas gone out by the gas outlet of filter box 13 are reduced, it is that plasma reaction is prepared;Demister
21 rear is provided with dedusting plate 22, and dedusting plate 22 is less than 1mm, prevents from leaking out with the inwall gap of plasma reaction device 2,
There is substantial amounts of fold on the surface of dedusting plate 22, can effectively filter the suspended particulate in waste gas;It is provided with the rear side of dedusting plate 22
Condenser 23, as shown in Fig. 2 condenser 23 includes compressor interface 231, S types condenser pipe 232 and dry gas outlet 233, pressure
Contracting machine interface 231 is connected with the connector of compressor, and compressor is condensed the waste gas of removing dust plate 22 after switching on power, cold
Solidifying waste water is flowed out by the discharge outlet of the bottom of plasma reaction device 2, the vapor that can effectively go in removing exhaust gas.
Set in the rear side of dedusting plate 22 and set gradually preionization plasma apparatus 24 and low-temperature plasma device 25, such as schemed
Shown in 3, preionization plasma apparatus 24 and low-temperature plasma device 25 are structure, size and shape identical quadrangle pipe, in advance
The angle between quadrilateral structure in ionization plasma apparatus 24 and low-temperature plasma device 25 is 45 °, and preionization etc. from
Sub-device 24 differs half length of side of quadrangle with low-temperature plasma device 25 on geometrical pattern, for increasing plasma
Collision and frequency of exposure.
The air inlet of plasma reaction device 2 and gas outlet use pyramidal structure so that waste gas is filled in plasma reaction
Putting in 2 fully to be reacted, and gas concentration automatic tester 26 is provided with the gas outlet of plasma reaction device 2, be used for
Concentration to the gas after treatment is detected.
Waste gas can be effectively gone in removing exhaust gas by pretreatment unit in the present invention soluble gas and the ash of bulky grain
Dirt so that the organic vapor concentrations reduction in waste gas;By between the air inlet of plasma reaction device and gas outlet successively
Demister, dedusting plate and condenser are provided with, waste gas can be processed again;Centered by being filled in plasma reaction
Shape size is identical and the inclined preionization plasma apparatus of angle and low-temperature plasma device so that filled through preionization plasma
Put and collided through low-temperature plasma device again after colliding, increase the number of times of plasma collision, and then improve plasma
The exhaust treatment efficiency of body, the characteristics of with simple structure, efficiency high and low energy consumption.
Above content is only to design example and explanation of the invention, affiliated those skilled in the art
Various modifications or supplement are made to described specific embodiment or is substituted using similar mode, without departing from invention
Design or surmount scope defined in the claims, protection scope of the present invention all should be belonged to.