Wet dedusting system
Technical field
The utility model relates to tobacco business exhaust-gas treatment and dedusting technology field, relates in particular to a kind of wet dedusting system.
Background technology
At tobacco business, the dry dust removal system is used in the dedusting of tobacco production system always.The dry dust removal scope of application is wide, and most of dedusting objects can use, and particularly are applicable to the large-scale centralized dust pelletizing system; Simultaneously, the dry state dust that dry dust removal produces also helps focusing on and fully utilizing of dust.But dry dust removal can not be removed harmful, the toxic odor in the gas, when the dusty gas of handling high humility or high-temperature gas, also need take the anti-condensation measure, otherwise easily produces problems such as the glutinous company of dust, blocking pipe.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of pipeline length that reduces, and saves the preceding heating apparatus of exhaust, and can effectively reduce particle in the flue gas, removes organic principle and smell in the partial fume, reduces the wet dedusting system of environmental pollution.
The utility model comprises blower fan, and the intake stack, cyclone separator, the exhaust duct that are communicated with successively, and the outlet of intake stack is connected with a Venturi tube, and the porch in the Venturi tube is provided with atomizer; The outlet of Venturi tube is communicated with the cylindrical shell of cyclone separator.
Because the flue dust that contains in the flue gas that is produced in the tobacco production system is very tiny, relatively drier again simultaneously, before entering cyclone separator, fully atomize, help carrying out dust moistening, smell in the flue gas and VOC are absorbed, this has better dust removing effects with respect to the top water spray mode of general vertical water dust scrubber.And above-mentioned atomization process is finished in Venturi tube, can fully guarantee atomizing effect, and effectively improve the gas-water separation performance of postorder.
In addition, for the separation and the discharging of moisture in the back humidity discharging gas that more helps atomizing, the air inlet of cyclone separator is arranged at its cylindrical shell bottom, i.e. the outlet of Venturi tube is communicated with the cylindrical shell bottom of cyclone separator, employing bottom air intake mode.
The top of described cyclone separator also can be provided with water injector, to be used for the cleaning of cylinder inboard wall; Simultaneously, one resistance absorber is set, can increases the aqueous vapor separating effect, reduce the water content of exhaust at the wind exhausting outlet place of cyclone separator.
In order to reduce the device systems floor space, blower fan can be positioned over the top of cyclone separator.Adopt flexible pipe to be connected between the exhaust outlet of cyclone separator and the air inlet.
It is long that the utility model can effectively overcome the dry collector dedusting pipeline that is used for the dry humidity discharging gas of thin plate in the present tobacco business, require dry humidity discharging gas temperature than higher, the dust pelletizing system power of motor is big, the organic gas of discharging in the gas can not be removed, shortcomings such as smell is big, can reduce the length of pipeline, reduce the discharge temperature of humidity discharging gas, saved the preceding heating apparatus of exhaust, by cyclone dust removal, can effectively reduce particle in the gas, remove organic principle and smell in the partial fume, reduce environmental pollution.The utility model system configuration is simple, also greatly reduces equipment purchase cost and maintenance cost.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
As shown in Figure 1, the utility model comprises intake stack 1, cyclone separator 4, exhaust duct 7 and blower fan 10, and the outlet of intake stack 1 is connected with Venturi tube 2, and the porch in the Venturi tube 2 is provided with atomizer 3; The outlet of Venturi tube 2 is communicated with the cylindrical shell bottom of cyclone separator 4, and promptly cyclone separator 4 is taked the bottom air intake.Blower fan 10 places the top of cyclone separator 4.
As shown in Figure 1, the cylindrical shell internal upper part of cyclone separator 4 is equipped with resistance absorber 6.Adopt flexible pipe 5 to be connected between the wind exhausting outlet of cyclone separator 4 and blower fan 10 air inlets.The cylindrical shell cone base of cyclone separator 4 is established discharge outlet 8, and the water tank 9 that is used to provide the atomizing cycling use of water is placed in the lower end of discharge outlet 8, and water tank 9 tops are provided with filter cloth or screen pack, with the waste residue in the elimination draining.
During actual motion, the humidity discharging gas from the thin plate drying machine is discharged enters in the Venturi tube 2 through intake stack 1, and the porch in the Venturi tube 2 is provided with atomizer 3.Recirculated water is squeezed in the atomizer 3 through water pump from water tank 9, atomize water into tiny dropping liquid, these tiny dropping liquids have great contact surface, condense in the collapsible tube of Venturi tube 2 and trunnion with the humidity discharging gas that includes the pipe tobacco powder, powder in the flue gas will combine with water droplet, gas-liquid two-phase is by the anemostat of Venturi tube 2 then, sentence certain speed in the cylindrical shell lower inlet of cyclone separator 4 and tangentially enter cylindrical shell, form the swirling eddy that sharply rises, the gas that contains water smoke is split into barrel under action of centrifugal force, flow downward along barrel, assemble the back at the cylindrical shell conical section and form water seal, when water seal reach a certain height, the exhaust of blower fan 10 formed balance with it, and the water of dust-laden will flow into through the discharge outlet 8 of cyclone separator 4 cylindrical shells bottom and have in the water tank 9 of filter cloth.Like this, the water in the water tank will recycle, and unnecessary water mainly is the water that humidity discharging gas contains, and will discharge from the spout hole of water tank.
With respect to the original sack cleaner of tobacco business system, the utility model has reduced the length of pipeline, saved the energy, the used sack cleaner blower fan of original system must be selected the motor of 45KW for use, and native system only need select for use the blower fan of the driven by motor of 7.5KW just can satisfy the production needs; Simultaneously, also needn't increase hot dry wind in order to improve dew point.In addition, the used atomized water of the utility model can be recycled, and the waste residue of discharge filters by the screen pack of water tank upper, can come out according to solid waste then, and is minimum for environmental pollution.