CN2060867U - Cyclone separator for spray furnace cap - Google Patents

Abstract

The utility model relates to a dry process dust cleaning apparatus for a cupola. A dust cleaner is covered on a cupola stack. The utility model comprises a lower section of cylinder body, a cyclone body with a primary blade, a middle section of cylinder body, an upper section of cylinder body, a spraying exhaust cylinder body, a reverse blower system, etc. An airflow regulating apparatus is arranged in a secondary air inlet pipe, and spraying pipes are arranged in the spraying cylinder body on the top. Airflow of the secondary air which is blown in can be adjusted to match with smoke gas quantity entering the dust remover, so that the dust cleaning effect of the dust remover can reach the optimum. The dust cleaning efficiency can reach more than 90 percent, the effect of no dust on a roof can be obtained, and the state standard of effluent discharge can be obtained or approached. The dust cleaner which can be arranged at the top part of the cupola has the advantages of easy fabrication, no ground occupation, simple operation and maintenance, low cost, high practicability and economical efficiency.

Description

Cyclone separator for spray furnace cap

The utility model belongs to atmospheric environment protection equipment.It relates to a kind of high temperature dust air-flow dry method dust, is applicable in high temperature, the dirty environment and works, and is specially adapted to the dedusting of furnace cupola.

In existing smoke dust-removing equipment, be divided into wet method and dry method two big classes.Wet dedusting equipment exists and takes up an area of greatly, water consumption is big, the secondary pollution of mud and water seriously is difficult to shortcomings such as processing, and general centrifugal and inertia nonaqueous dust cleaner, efficiency of dust collection are low, can only reach 60～70%, and equipment such as sack cleaner, investment is big, to gas cleaning at high temperature trouble very all in operation and maintenance, more than these, cause them in medium-sized and small enterprises, to be difficult to use.The general nonaqueous dust cleaner efficiency of dust collection of furnace crown cyclone dust that band secondary wind blasts system improves greatly, overcomes above-mentioned shortcoming preferably.In medium-sized and small enterprises, obtain increasingly extensive application, but, cause efficiency of dust collection further to improve because the exhaust gas volumn of deduster can't be regulated and enter to the secondary wind air quantity that blasts does not match.Equipment resistance is big, and charge door place thermal current is excessive, and working condition worsens.

The purpose of this utility model, at the problems referred to above, spray blower unit by setting up volume adjusting apparatus and furnace roof place, adjustment blasts secondary wind air quantity, make it and enter the deduster exhaust gas volumn to be complementary, further improve the efficient of furnace crown cyclone dust, and improve charge door place working condition, for the furnace cupola dedusting provides furnace crown cyclone dust efficiently.

The said dust arrester of the utility model, its duster cover is on cupola stack, comprise the hypomere cylindrical shell that forms by inner core and urceolus noose, place, axle center, inner core upper end is provided with the rotary fluid of band primary vane, inner diameter of steel flue is same as the chimney diameter, quantity is curve-like greater than 1 primary vane, blade air-out guide angle is 20 °～45 °, rotary fluid is an awl cylinder, the drift angle of cone is 60 °～90 ° up and down, and urceolus connects with the stage casing cylindrical shell that has the above auxiliary blade of a slice, and auxiliary blade becomes the α angle with the barrel vertical line, cylindrical shell length is 1.5～4 times of inner diameter of steel flue, and its diameter is about 1.5～3 times of inner diameter of steel flue; The top is for having secondary wind air compartment, the epimere cylindrical shell of secondary wind entrance, greater than 1 secondary wind secondary gas flow that ejiction opening the sprays generation and the air-flow of the same direction of rotation of flue gas, it arranges that angle becomes the β angle with horizontal plane, spray the air draft cylindrical shell, and the blowback wind system etc.Pressure gas source joins with secondary air intake pipe and jet-stream wind air inlet pipe respectively, and the secondary wind from the pressure gas source air inlet pipe to secondary wind air compartment blasts the system, is provided with secondary wind adjusting device.It can regulate secondary wind air quantity, is complementary with the exhaust gas volumn that enters from the inner core bottom interface, is provided with playpipe in spraying the air draft cylindrical shell, and its end links to each other with the jet-stream wind air inlet pipe.

Secondary wind adjusting device has adopted the butterfly that has dog screw to cut down (Fig. 2), and the diameter that butterfly is cut down is same as joining dust diameter.Butterfly is cut down and comprises and cut down body (19), cut down plate (20), cut down axle (21), cuts down plate (20) and is fixed on and cuts down on the axle (21), cuts down axle and has dog screw (22) on (21).

The mode that butterfly is cut down with polyphone is installed in the pipeline between pressure gas source and the secondary wind air compartment.

Playpipe is located at and sprays place, air draft cylindrical shell axle center, and spout upwards.

The air-flow of being supplied with by pressure gas source divides two the tunnel, the one tunnel to advance secondary air intake pipe, from tangentially entering the secondary wind air compartment at top.Another road enters the playpipe that exhaust duct axon heart place is sprayed on the top through the jet-stream wind blast pipe, and upwards ejection drives furnace gas and upwards enters atmosphere.

Furnace gas enters deduster from the inner core lower end, produce the rotation ascending air through the rotary fluid that has primary vane, dust is thrown toward rotation gas skin in the furnace gas, secondary wind tangentially enters secondary wind air compartment And and sprays from overfire air port, form downward high speed swirling eddy with the same direction of rotation of furnace gas, this causes an air-flow rotation of furnace gas aggravation, strengthened dust separation, separated dust, brought to by secondary wind in the ash bucket of hypomere cylindrical shell by means of stage casing cylindrical shell barrel and auxiliary blade, discharge by ash releasing tube.

The adjusting of secondary wind is to cut down the angle of plate and realize that the situation of top exhaust outlet and charge door of observing is determined best angle position by regulating butterfly, and screwed in place screw subsequently fixedly cuts down the position of plate.

The utility model has the advantages that: simple in structure, easily manufactured, be contained in the furnace cupola top, do not take up an area of the face position, cost is low, can be high temperature resistant, and operation and maintenance are simple, the efficiency of dust collection height, the roof does not have dust stratification, near or reach national requirements for environmental protection, efficiency of dust collection is more than 90%.Cupola charging mouth place working condition is good.

Fig. 1 is the example structure figure of the utility model on the 3T furnace cupola.

Fig. 2 is for volume adjusting apparatus of the present utility model--butterfly is cut down structure chart.

The inner core of deduster (1) directly is connected on the chimney of furnace cupola (18), the place, axle center, upper end of inner core (1) establishes the rotary fluid (3) that has primary vane (2), the number of blade is 6～16,20 °～45 ° of guide angles, inner core (1) diameter is 0.9m, rotary fluid (3) garden column diameter is 0.9m, 60 °～90 ° of cone-apex angles, hypomere urceolus (4) connects with the stage casing cylindrical shell (6) of band auxiliary blade (7), the auxiliary blade number is 4～12, become the α angle to can be 40 °～90 ° with the barrel vertical line, the stage casing barrel diameter is 2～2.4m, the top is provided with secondary wind air compartment (8), is uniform-distribution with 6～12 secondary wind entrances (9) on week in its garden, and it arranges that with horizontal direction the angle becomes β, the β angle is 30 °～60 °, epimere cylindrical shell central part is connected to and sprays air draft cylindrical shell (10), and the place is provided with playpipe (11) in injection air draft cylindrical shell (10) axle center, and jet upwards.Available three angle steel of rain cover (17) are fixed on air draft cylindrical shell (10) upper edge.Back blowing machine (14) air outlet is connected to a part of air communication that three-way pipe (15) blasted and crosses secondary air intake pipe (12) and blast secondary wind air compartment (8) again by secondary wind entrance (9) ejection downwards, forms the secondary swirling eddy.In blast pipe (12), be provided with butterfly and cut down (13), can regulate secondary wind air quantity.Another part air communication is crossed jet-stream wind air inlet pipe (16), from upwards ejection of playpipe (11).Furnace gas enters deduster by inner core (1), through rotary fluid (3) time, produce swirling eddy, because secondary gas flow effect, form violent rotary rotational flow, strengthen the dust separation of furnace gas greatly, separated dust is discharged from ash releasing tube (5), and clean gas enters atmosphere by spraying the injected airstream suction of air draft cylindrical shell.When blower fan was 4-72NO4A, it was 250mm that butterfly is cut down diameter, and the present embodiment efficiency of dust collection reaches more than 90%.It is ashless to reach roofing, the effect that fire door is not smoldered, near or reach discharging standards.

Claims (4)

1, injecting type furnace crown cyclone dust is a kind of furnace cupola dry-method dust-removal device, its duster cover is on cupola stack, comprise the hypomere cylindrical shell that forms by inner core and urceolus noose, place, axle center, inner core upper end is provided with the rotary fluid of band primary vane, urceolus connects with the stage casing cylindrical shell that has auxiliary blade, the top is for having secondary wind air compartment, the epimere cylindrical shell of secondary wind entrance, spray air draft cylindrical shell and blowback wind system etc., the utility model is characterised in that pressure gas source joins with secondary air intake pipe and jet-stream wind air inlet pipe respectively, secondary wind from the pressure gas source air inlet pipe to secondary wind air compartment blasts and is provided with secondary wind adjusting device the system, be provided with playpipe in spraying the air draft cylindrical shell, its end links to each other with the jet-stream wind air inlet pipe.

2, device according to claim 1 is characterized in that secondary wind adjusting device has adopted the butterfly that has dog screw to cut down, and the diameter that butterfly is cut down is same as the dust diameter that is connected.

3, device according to claim 2 is characterized in that butterfly is cut down with series system to be installed in the pipeline between pressure gas source and the secondary wind air compartment.

4, device according to claim 1 it is characterized in that playpipe is located at place, injection air draft cylindrical shell axle center, and spout upwards.