The solid particle device is reclaimed in a kind of negative pressure dehumidifying
The utility model belongs to uses the device that wet type whirlwind solid and gas separates, particularly a kind of negative pressure dehydrating unit that can reclaim solid particulate matter.
Contain SO in the Industrial Boiler discharged flue gas
2, need desulfurization to handle, when wet flue gas desulfurization was handled, needs be prepared into desulfurization slurry in advance with desulfurizing agent and water mixing slaking, desulfurization slurry were sent in the desulfurizing tower again, and contained SO
2Flue gas fully contact, react, generate the waste liquid contain sulphite, realize flue gas desulfurization.
During the preparation desulfurization slurry, desulfurizing agent material powder has heat with fresh water (FW) mixing maturing process and takes place in the slaking jar, produce aqueous vapor, and the charging aperture inwall caking (desulfurizing agent is met moisture and formed) that the aqueous vapor rising can make the slaking tank top stops up charging aperture.For keeping charging unobstructed, need take negative pressure (injection) dehumidifying measure at slaking jar upper space.Because the moisture that is drawn out of contains the desulfurizing agent dust, so need to adopt solid and gas to separate, the solid particle that is rinsed is still stayed in the slaking jar, gas then drains in the atmosphere after demister dewaters.Existing dehumidifying dust arrester, as the hybrid high-efficiency dust remover of Chinese patent ZL200720115665.2, the dehumidifying of dedusting simultaneously, but solid particle fails to reclaim, and its structure is not suitable for the ripening device used of desulfurization slurry.
Summary of the invention
The purpose of this utility model is, utilize the principle of cyclonic separation grit and water spray absorption, design and produce the device of a kind of negative pressure dehumidifying and recovery solid particle, when the preparation desulfurization slurry, prevent that dust from overflowing, preventing that moisture from rising to causes obstruction in the charging aperture, simultaneously with liquid reclaimed materials powder, moisture enters atmosphere behind demister.
The technical solution of the utility model is following realization: the solid particle device is reclaimed in a kind of negative pressure dehumidifying, form by cylindrical shell, blower fan, water spray, demister, cylindrical shell is cylindrical, the bottom is back taper, the bottom centre gas access is provided with inlet flange, be used to connect the slaking jar, the top gas outlet is provided with outlet(discharge) flange, be used for connecting line, inner barrel is provided with wind wheel dust arrester, tangential water injector, cyclone separator and outlet demister from bottom to top successively, the outside side of cylindrical shell is provided with the Wet-type centrifugal blower fan, and blower fan is axially arranged with water injector
The wind wheel dust arrester of bottom is horizontal open type wind wheel in the cylindrical shell, and the wind wheel center is provided with the flushing water shower nozzle,, sprinkler pressure 100-140kpa,
The tangential water injector at middle part in the cylindrical shell is 2-3 the horizontal tangential shower nozzle that is provided with along barrel in the cylindrical shell middle and lower part, sprinkler pressure 20-40kpa
The cyclone separator at middle part in the cylindrical shell, be that barrel at cylindrical shell middle part tangentially is provided with the air inlet of blower fan and the air outlet of blower fan, be connected with the centrifugal fan of cylindrical shell outside, centrifugal fan is axially arranged with water injector, water spraying direction is identical with gas flow, sprinkler pressure 100-140kpa, air outlet are connected the tangential of cylindrical shell middle and upper part cyclone separator
The demister of cylindrical shell internal upper part, i.e. vane type demister,
Advantage of the present utility model:, solved slaking jar charging aperture blocking problem fully by removal to aqueous vapor.Need not safeguard complete built-in wet type blower fan, obtain high efficiency with suitable crushing.Only need the water yield seldom.Particle is caught by self-cleaning wet wind fan, can reach 99% removal efficient for the particle of 1-2 micron, and the water content of outlet is less than 50mg/m
3, backflow of particles to the slaking jar under catching utilizes again, has saved resource, and the water yield is little and need not water level controller, no filler low pressure loss.Solid particle device and general gas dehumidification dust arrester are reclaimed in the negative pressure dehumidifying that is applicable to the desulfurizing agent maturing process.
Description of drawings:
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is the front view that the solid particle device is reclaimed in a kind of negative pressure dehumidifying of the present utility model
Fig. 2 is the vertical view of Fig. 1
Among the figure, 1-cylindrical shell, the pending gas access of 2-, the outlet of 3-pure qi (oxygen) body, 4-wind wheel dust arrester, the tangential sparge pipe of 5-, the 6-cyclone separator, 7-impeller demister, 8-blower fan, the axial water injector of 9-blower fan, 10-gas access adpting flange, 11-gas vent adpting flange, 12-flushing water shower nozzle, 13-horizontal tangential shower nozzle, the air inlet of 14-blower fan, the air outlet of 15-blower fan
The specific embodiment:
By Fig. 1; 2 as seen; a kind of negative pressure dehumidifying solid particle retracting device of the present utility model; by cylindrical shell; blower fan; water spray; demister is formed; cylindrical shell 1 is cylindrical, and the bottom is provided with gas access 2, and the top is provided with gas vent 3; inner barrel is provided with wind wheel dust arrester 4 from bottom to top successively; tangential water injector 5, cyclone separator 6, impeller demister 7; the outside side of cylindrical shell is provided with centrifugal fan 8; blower fan is axially arranged with water injector 9, and the cylindrical shell bottom is back taper, and the place, gas access is provided with adpting flange 10; be connected with the pipeline of slaking serum pot; the top gas outlet is provided with pipeline adpting flange 11, is connected with the gas vent pipeline
Wind wheel dust arrester 4 is horizontal open type wind wheels, and the wind wheel center is provided with flushing water shower nozzle 12, sprinkler pressure 100-140Kpa.
Tangential water injector 5 is 2-3 horizontal tangential shower nozzles 13 that are provided with along barrel in the cylindrical shell middle and lower part, sprinkler pressure 20-40Kpa.
Cyclone separator 6 is that the barrel at the cylindrical shell middle part tangentially is provided with the air inlet 14 of blower fan and the air outlet 15 of blower fan, be connected with the centrifugal fan 8 of cylindrical shell outside, centrifugal fan is axially arranged with water injector 9, water spraying direction is identical with gas flow, sprinkler pressure 100-140Kpa, air outlet are connected the tangential of cylindrical shell middle and upper part cyclone separator.
Impeller demister 7, i.e. vane type demister.
Using method of the present utility model is: when the cylindrical shell bottom links to each other with pipeline with slurries slaking jar, gas enters the moisture film that the lower tangential water spray forms from slurries slaking jar, remove the lower part solid particle, then enter bottom wind wheel dust arrester, flushing water is cleaned wind wheel blade and is formed scuff-resistant coating by the center ejection of wind wheel, and dust is caught by drop, the free drop separation of gas and part, the slurries that dust and drop form flow back to the slaking jar again.When gas upwards flows; enter centrifugal fan by the side; axis direction water spray before entering centrifugal fan; play equally and clean wind wheel blade and protective effect; catch particle simultaneously, air-flow enters cyclone separator through centrifugal fan from tangential direction then, once more the particle in the air-flow is separated with moisture; moisture is removed steam through the vane type demister on top, and purified gas is discharged from the top.All are pounced on to catch with separated particulate material and steam and are got back in the slurry preparation slaking jar through the inlet of cylindrical shell below.By air-flow is stopped the long period in equipment, through four dedustings, a demist need not the effect that filler has just improved the dedusting dehumidifying and reclaimed solid particle.