CN209415987U - A kind of spray drying system of air devider and calcined kaolin - Google Patents

Abstract

The utility model discloses a kind of air devider and the spray drying system of calcined kaolin, spray drying system includes rotary kiln, kiln hood, hot-blast stove, hot air pipe and the spray tower for being mounted on the rotary kiln end；The air inlet of hot air pipe is connected to the air outlet of the outlet of kiln hood upper end and hot-blast stove respectively, the air outlet of hot air pipe and the inlet communication of spray tower, and is equipped with air devider in the air outlet of hot air pipe；The air devider includes that N+1 coaxial arrangement divides air duct and the fan-shaped several groups flow guiding inclined plate being arranged in point air duct, in the upper and lower side for dividing air duct is respectively equipped with guide ring and flange up and down；What every group of flow guiding inclined plate was formed by sub- flow guiding inclined plate between adjacent two points of air ducts and in the same direction is arranged in.The utility model effectively can promote hot wind to be uniformly distributed inside spray drying tower, while not will cause the material moisture after spray tower air inlet buildup, drying and stablizing, and fuel consumption is few, and efficiency of heating- utilization is high.

Description

A kind of spray drying system of air devider and calcined kaolin

Technical field

The utility model belongs to calcined by rotary kiln clinker production technical field, is related to a kind of kaolin calcined discharge end auxiliary Device, more particularly to a kind of air devider and the spray drying system of calcined kaolin.

Background technique

Shanxi is the big province of coal resources in China, and in the coal-bearing series that distribution is wide, reserves are big, thickness is big, containing has largely Produce Coaseries kaolin for the intergrowth mineral exploiting and comprehensively utilize, Coaseries kaolin be China is distinctive, have wide utilization before The important nonmetal mineral resource of scape.Coaseries kaolin need to pass through wet grinding, drying, calcining, depolymerization, by deshydroxy, decarburization A series of crystal form variations could be used for the industries such as coating, papermaking, electrophoretic paint.And dry use of Coaseries kaolin industry is forged at present The fume afterheat generated during burning, is supplemented a small amount of 650 ~ 700 DEG C of hot winds in the ultra-fine mud of spray drying tower and atomisation Starch contact drying.But the Coaseries kaolin partial size for entering calcined by rotary kiln is thinner, and material can be had in the tail gas of rotary kiln, When into spray tower, by air devider, material can be accumulated and be fallen on air devider, not only resulted in hot wind and be unevenly distributed, and can also be made At air devider putty, influence divides wind effect, and prolonged buildup can sometime cause material large area to collapse, influence subsequent Equipment operates normally.

Summary of the invention

In order to solve the problems, such as that hot wind is unevenly distributed in drying process in the prior art and easy putty, the utility model disclose A kind of spray drying system of air devider and calcined kaolin, can effectively promote hot wind inside spray drying tower uniformly Distribution, while not will cause the material moisture after spray tower air inlet buildup, drying and stablizing, fuel consumption is few, heat utilization effect Rate is high.

The technical solution of the utility model is achieved in that

On the one hand, the utility model discloses a kind of air devider, including N+1 be coaxially disposed divide air duct and in fan Shape is arranged in for dispersing the several groups flow guiding inclined plate of hot-air and granule materials in point air duct, in the 1st along axle center outward Divide the upper end of air duct to be equipped with upper guide ring for charging to n-th, divides air duct along outside the 1st to N+1 in axle center Lower end be equipped with the lower guide ring for discharging, and the angle of upper and lower guide ring and horizontal plane is circulated not less than dividing in air duct The angle of repose of granule materials divides at N+1 and is equipped with flange above air duct；Every group of flow guiding inclined plate is by adjacent two points of wind is arranged in Sub- flow guiding inclined plate composition between cylinder and in the same direction, the angle of the flow guiding inclined plate and the angle of horizontal plane are not less than Divide the angle of repose of circulated granule materials in air duct；Wherein, N >=1.Wherein, described to divide air duct transparent type, there is no any Dead angle, and not less than the setting of the flow guiding inclined plate of angle of repose and upper and lower guide ring, can farthest avoid hot air duct In dust buildup, cause air devider putty.

The angle of the angle of upper and lower guide ring and horizontal plane, flow guiding inclined plate and horizontal plane as a preferred implementation manner, It is all larger than the angle of repose of circulated granule materials point air duct Nei.

The angle of repose for dividing circulated granule materials air duct Nei as a preferred implementation manner, is 36 ~ 45 °, upper guide ring Angle with horizontal plane is 58 ~ 63 °, and the angle of lower guide ring and horizontal plane is 58 ~ 63 °, the angle of flow guiding inclined plate and horizontal plane It is 58 ~ 63 °；The angle of upper guide ring and horizontal plane is 60 °, and the angle of lower guide ring and horizontal plane is 60 °, flow guiding inclined plate and water The angle of plane is 60 °.

Further, the outer diameter of the lower end surface of the lower guide ring is greater than the outer diameter of the flange.

Further, described that air duct, flow guiding inclined plate, upper guide ring and lower guide ring is divided to be by 310S high temperature resistant stainless steel It is process, naturally it is also possible to other heat-resisting materials of the other high hot-airs to circulate in the inner and particle temperature, use In preventing air devider high temperature deformation, buildup is caused, and each weld seam and surface will polish smooth, and prevent buildup.

On the other hand, the invention also discloses a kind of spray drying system of calcined kaolin, the spray drying systems System includes rotary kiln, kiln hood, hot-blast stove, hot air pipe and spray tower；The kiln hood is mounted on the end of the rotary kiln, The air inlet of the hot air pipe is connected to the air outlet of the outlet of the kiln hood upper end and hot-blast stove respectively, the hot air pipe The inlet communication of air outlet and the spray tower, and above-mentioned air devider is installed in the air outlet of the hot air pipe.

The air devider is mounted on the air outlet of the hot air pipe by flange as a preferred implementation manner,.

The design of air devider flow guiding inclined plate and upper and lower guide ring in the utility model, it is therefore intended that fines containing kaolin Hot wind eddy flow more evenly be distributed in spray tower, while deposit to the material in the hot wind containing material will not on flow guiding inclined plate, increase Add exchange area and swap time of the hot wind of spraying mud and the fines containing kaolin in spray tower, this is because spiral helicine Hot gas is longer than linear hot gas travel distance.

The utility model is by dividing the design of air duct, wind device flow guiding inclined plate and upper and lower guide ring that hot wind can be promoted spraying It is uniformly distributed in tower, meanwhile, the dust buildup in hot air duct is effectively avoided, air devider putty, and prolonged product are caused Material, influences the normal operation of equipment.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is air devider in the utility model embodiment 1 along the main view of central axis splitted (without flow guiding inclined plate).

Fig. 2 is the top view (being free of flange) of air devider in the utility model embodiment 1.

Fig. 3 is the 3-D view of air devider in the utility model embodiment 1.

Fig. 4 is the structural schematic diagram of the spray drying system of calcined kaolin in the utility model embodiment 1 and 2.

Fig. 5 is air devider in the utility model embodiment 2 along the main view of central axis splitted.

Fig. 6 is the top view (being free of flange) of air devider in the utility model embodiment 2.

Fig. 7 is the 3-D view of air devider in the utility model embodiment 2.

In figure: 1, spray tower；2, air devider；3, hot air pipe；4, hot-blast stove；5, kiln tail strip flue gas；6, rotary kiln；7, kiln Hood；21, divide air duct；22, upper guide ring；23, lower guide ring；24, flow guiding inclined plate；25, flange；241, sub- flow guiding inclined plate.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.

Embodiment 1

The spray drying system of calcined kaolin as shown in Figure 4, the spray drying system include rotary kiln 6, kiln hood 7, hot-blast stove 4, hot air pipe 3 and spray tower 1；The kiln hood 7 is mounted on the end of the rotary kiln 6, the hot air pipe 3 Air inlet is connected to the air outlet of the outlet of 7 upper end of kiln hood and hot-blast stove 4 respectively, the air outlet of the hot air pipe 3 with The inlet communication of the spray tower 1, and above-mentioned air devider 2 is installed in the air outlet of the hot air pipe 3.

Wherein, air devider 2 as shown in Fig. 1 ~ 3, including N+1 be coaxially disposed 21 and fan-shaped be arranged in a point wind For dispersing the several groups flow guiding inclined plates 24 of hot-air and granule materials in cylinder 21, along axle center outside the 1st to n-th point The upper end of air duct 21 is equipped with the upper guide ring 22 for charging, in the case where dividing air duct 21 to N+1 along outside the 1st in axle center End is equipped with the lower guide ring 23 for discharging, and the angle of upper guide ring 22 and horizontal plane is 60 °, lower guide ring 23 and horizontal plane Angle be 60 °, divide in the N+1 and be equipped with flange 25 above air duct 21, the air devider 2 is mounted on institute by flange 25 State the air outlet of hot air pipe 3；Every group of flow guiding inclined plate 24 is by son between adjacent two points of air ducts 21 and in the same direction is arranged in What flow guiding inclined plate 241 formed, the angle of the flow guiding inclined plate 24 and the angle of horizontal plane are 60 °, and the lower guide ring 23 The outer diameter of lower end surface is greater than the outer diameter of the upper surface of the upper guide ring 22；Dividing circulated granule materials in air duct 21 is that calcining is high Ridge soil, angle of repose are 41 °.

Wherein, described to divide air duct 21 transparent type, be not present any dead angle, and greater than angle of repose flow guiding inclined plate and The setting of upper and lower guide ring, can farthest avoid the dust buildup in hot air duct, cause air devider putty.

Further, described that air duct 21, flow guiding inclined plate 24, upper guide ring 22 and lower guide ring 23 is divided to be by the resistance to height of 310S What warm stainless steel was process, naturally it is also possible to other high temperature resistants of the other high hot-airs to circulate in the inner and particle temperature Material causes buildup, and each weld seam and surface will polish smooth, and prevent buildup for preventing 2 high temperature deformation of air devider.

Embodiment 2

Air devider 2 as shown in Fig. 5 ~ 7,21 and fan-shaped be arranged in point air duct 21 being coaxially disposed including 2 are used In the several groups flow guiding inclined plate 24 of dispersion hot-air and granule materials, set along the upper end of 1st point of outside air duct 21 of axle center Have the upper guide ring 22 for charging, the 1st and 2 points of air ducts 21 lower end be equipped with for discharging lower guide ring 23, and on The angle of guide ring 22 and horizontal plane is 60 °, and the angle of lower guide ring 23 and horizontal plane is 60 °, on 2 points of air ducts 21 Side is equipped with flange 25, and the air devider 2 is mounted on the air outlet of the hot air pipe 3 by flange 25；Every group of flow guiding inclined plate 24 be It is formed by sub- flow guiding inclined plate 241 between adjacent two points of air ducts 21 and in the same direction is arranged in, the flow guiding inclined plate 24 The angle of angle and horizontal plane is 60 °, and the outer diameter of the lower end surface of the lower guide ring 23 is greater than the upper of the upper guide ring 22 The outer diameter of end face；Dividing circulated granule materials in air duct 21 is calcined kaolin, and angle of repose is 41 °.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (8)

1. a kind of air devider, it is characterised in that: including N+1 be coaxially disposed divide air duct and fan-shaped be arranged in a point air duct It is interior for dispersing the several groups flow guiding inclined plates of hot-air and granule materials, dividing air duct along axle center outside the 1st to n-th Upper end is equipped with the upper guide ring for charging, is dividing the lower end of air duct to be equipped with for going out along outside the 1st to N+1 in axle center The lower guide ring of material, and the angle of upper and lower guide ring and horizontal plane is not less than the angle of repose for dividing circulated granule materials air duct Nei, Divide at N+1 and is equipped with flange above air duct；Every group of flow guiding inclined plate is by being arranged between adjacent two points of air ducts and along same side To sub- flow guiding inclined plate form, the angle of the angle of the flow guiding inclined plate and horizontal plane is not less than dividing circulated particle in air duct The angle of repose of material；Wherein, N >=1.

2. air devider as described in claim 1, it is characterised in that: angle, flow guiding inclined plate and the water of upper and lower guide ring and horizontal plane The angle of plane is all larger than the angle of repose of circulated granule materials point air duct Nei.

3. air devider as claimed in claim 2, it is characterised in that: divide circulated granule materials air duct Nei angle of repose be 36 ~ 45 °, the angle of upper guide ring and horizontal plane is 58 ~ 63 °, and the angle of lower guide ring and horizontal plane is 58 ~ 63 °, flow guiding inclined plate with The angle of horizontal plane is 58 ~ 63 °.

4. air devider as claimed in claim 3, it is characterised in that: the angle of upper guide ring and horizontal plane is 60 °, lower guide ring with The angle of horizontal plane is 60 °, and the angle of flow guiding inclined plate and horizontal plane is 60 °.

5. air devider as described in claim 1, it is characterised in that: described to divide air duct, flow guiding inclined plate, upper guide ring and lower guide ring It is to be process by 310S high temperature resistant stainless steel.

6. air devider as described in claim 1, it is characterised in that: the outer diameter of the lower end surface of the lower guide ring is greater than the flange Outer diameter.

7. a kind of spray drying system of calcined kaolin, characterized by comprising: rotary kiln, kiln hood, hot-blast stove, hot wind Pipe and spray tower；The kiln hood is mounted on the end of the rotary kiln, the air inlet of the hot air pipe respectively with the kiln tail The outlet of cover upper end is connected to the air outlet of hot-blast stove, the inlet communication of the air outlet of the hot air pipe and the spray tower, and Any air devider in claim 1 ~ 6 is installed in the air outlet of the hot air pipe.

8. the spray drying system of calcined kaolin as claimed in claim 7, it is characterised in that: the air devider is pacified by flange Mounted in the air outlet of the hot air pipe.