CN210320068U - Rotary kiln lining structure and rotary kiln for burning hazardous waste - Google Patents

Abstract

The utility model provides a rotary kiln inner lining structure and hazardous waste burn and use rotary kiln, rotary kiln inner lining structure includes the rotary kiln barrel, the fixed heat preservation that is provided with on the rotary kiln barrel inner wall, the fixed wearing work layer that is provided with on the surface of heat preservation, the inner wall of rotary kiln barrel still is provided with on the surface grabs the nail, the heat preservation includes the heat preservation bottom plate, the layer is pour in heat preservation, the fixed inner wall surface of laying at the rotary kiln barrel of heat preservation bottom plate, the heat preservation bottom plate is kept away from one side of rotary kiln barrel and is offered the round hole that supplies to grab the nail and pass on the surface, still be provided with the fixed column between per two round holes, the fixed column is fixed to be set up on the heat. The utility model discloses can solve the rotary kiln well in the use, the corruption of wastes material to the inside lining to and because the inside lining fracture that moisture in the wastes material arouses and the phenomenon of peeling off when burning, and because the damage that the inside lining inflation arouses, ensure the life of rotary kiln inside lining.

Description

Rotary kiln lining structure and rotary kiln for burning hazardous waste

Technical Field

The utility model relates to a hazardous waste incineration equipment technical field especially relates to a rotary kiln inner lining structure and hazardous waste burn and use rotary kiln.

Background

The refractory lining is a working surface of the rotary kiln during high-temperature incineration production and is a main structure of the rotary kiln for bearing high temperature. In the incineration process of treating the hazardous waste, the chloride contained in the hazardous waste can erode the rotary kiln lining due to long-term high-temperature operation, so that the strength of the refractory material of the rotary kiln lining is lowered and becomes brittle, and the lining is cracked due to temperature fluctuation and local temperature change; when the water contained in the waste is incinerated at high temperature, the surface temperature of the lining is greatly fluctuated, so that the lining is cracked and peeled; the cracking and peeling of the lining caused by mutual extrusion when the whole lining expands and changes due to the start and stop of the rotary kiln and the temperature change during the operation. In order to ensure that the equipment can effectively operate for a long time, the lining degree and the anti-stripping performance of the rotary kiln need to be improved.

Disclosure of Invention

In view of the above, it is desirable to provide a lining structure of a rotary kiln; it is also possible to provide a rotary kiln for incineration of hazardous waste including a rotary kiln lining structure.

The utility model provides a rotary kiln lining structure, including the rotary kiln barrel, the fixed heat preservation that is provided with on the rotary kiln barrel inner wall, the fixed wearing work layer that is provided with on the surface of heat preservation, the inner wall of rotary kiln barrel still is provided with the grapple on the surface, the one end of grapple passes the heat preservation, and with the inner wall fixed connection of rotary kiln barrel, the other end of grapple is located inside the wear layer, the heat preservation includes the heat preservation bottom plate, the layer is pour in the heat preservation, the fixed inner wall surface of laying at the rotary kiln barrel of heat preservation bottom plate, the round hole that supplies the grapple to pass is seted up on one side surface far away from the rotary kiln barrel of heat preservation bottom plate, still be provided with the fixed column between per two round holes, the fixed column is fixed to be set up on the heat.

Preferably, the grapple includes connecting rod, first connector, second connector cross arrangement, and first connector, the second connector is "ten" font, round hole and rotary kiln barrel inner wall fixed connection on the heat preservation bottom plate are passed to the one end of connecting rod, the other end and first connector of connecting rod, second connector fixed connection, make first connector, the second connector is located the inside of wearing layer, pour the layer with better messenger's wearing layer adheres to on the heat preservation, first connector, the second connector is trapezoidal platform form.

Preferably, the wear-resistant working layer is cast by adopting a chromium-zirconium-aluminum wear-resistant casting material, and the casting thickness is 200 mm.

Preferably, the heat-preservation pouring layer adopts mullite hollow spheres and high-alumina light particles as aggregates, alumina cement as a binding agent, and the pouring thickness is 150 mm.

Preferably, the gripping nails are uniformly distributed on the inner wall of the rotary kiln cylinder at equal intervals and are distributed according to the standard of 200mm multiplied by 200 mm.

Preferably, expansion joints are formed in the surface of the heat-insulating pouring layer along the axial direction of the rotary kiln cylinder.

Preferably, the expansion gaps are 8 mm-10 mm in width, and the distance between every two expansion gaps is 1400mm and distributed in a Z shape.

Preferably, the position of the wear-resistant working layer at the head of the rotary kiln cylinder body is fixedly provided with an interception ridge to prevent waste materials from leaking from a gap of the kiln head in operation, and the size of the interception ridge is 100mm multiplied by 100 mm.

Preferably, a conical head is fixedly arranged at one end, far away from the rotary kiln cylinder, of the fixing column.

The rotary kiln for burning the dangerous waste comprises a lining structure of the rotary kiln.

The utility model adopts the above technical scheme, its beneficial effect lies in: the utility model discloses a fixed heat preservation that is provided with on rotary kiln barrel inner wall, the fixed wearing working layer that is provided with on the surface of heat preservation, the inner wall of rotary kiln barrel still is provided with on the surface grabs the nail, the one end of grabbing the nail passes the heat preservation, and with the inner wall fixed connection of rotary kiln barrel, the other end of grabbing the nail is located inside the wearing layer, the heat preservation includes the heat preservation bottom plate, the layer is pour in the heat preservation, the fixed inner wall surface of laying at the rotary kiln barrel of heat preservation bottom plate, the heat preservation bottom plate is far away from one side of rotary kiln barrel and is offered the round hole that supplies the grabbing nail to pass on the surface, still be provided with the fixed column between per two round holes, the fixed setting of fixed column is on the heat preservation bottom plate, the fixed setting of layer is pour in the heat preservation, pour the layer can be better adhering to on the heat preservation. The utility model discloses can solve the rotary kiln well in the use, the corruption of wastes material to the inside lining to and because the inside lining fracture that moisture in the wastes material arouses and the phenomenon of peeling off when burning, and because the damage that the inside lining inflation arouses, ensure the life of rotary kiln inside lining.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of fig. 1 from another angle.

Fig. 3 is a schematic structural view of the heat-insulating bottom plate of the present invention.

Fig. 4 is a schematic structural view of the staple of the present invention.

In the figure: the rotary kiln comprises a rotary kiln barrel body 1, a heat preservation layer 2, a heat preservation bottom plate 21, a heat preservation pouring layer 22, a wear-resistant working layer 3, a grab nail 4, a connecting rod 41, a first connecting head 42, a second connecting head 43, an interception ridge 5, a fixing column 6, a conical head 61, a round hole 7 and an expansion joint 8.

Detailed Description

Referring to fig. 1 to 4, an embodiment of the present invention provides a rotary kiln lining structure, which includes a rotary kiln cylinder 1, wherein an insulating layer 2 is fixedly disposed on an inner wall of the rotary kiln cylinder 1, a wear-resistant working layer 3 is fixedly arranged on the surface of the heat-insulating layer 2, a gripping nail 4 is also arranged on the inner wall surface of the rotary kiln cylinder body 1, one end of the gripping nail 4 penetrates through the heat-insulating layer 2, and with rotary kiln barrel 1's inner wall fixed connection, the other end of grabbing nail 4 is located the wearing layer inside, heat preservation 2 includes heat preservation bottom plate 21, layer 22 is pour in the heat preservation, heat preservation bottom plate 21 is fixed to be laid on the inner wall surface of rotary kiln barrel 1, one side surface that rotary kiln barrel 1 was kept away from to heat preservation bottom plate 21 is seted up on and is supplied grabbing nail 4 to pass round hole 7, still be provided with fixed column 6 between per two round holes 7, fixed column 6 is fixed to be set up on heat preservation bottom plate 21, layer 22 is pour in the heat preservation is fixed to be set up on heat preservation bottom plate 21. The conical head 61 is fixedly arranged at one end of the fixing column 6, which is far away from the rotary kiln cylinder body 1, so that the heat-preservation pouring layer 22 can be better attached to the heat-preservation bottom plate 21.

The gripping nails 4 are uniformly distributed on the inner wall of the rotary kiln cylinder 1 at equal intervals and are distributed according to the standard of 200mm multiplied by 200 mm. The grapple 4 includes connecting rod 41, first connector 42, the second connector 43, first connector 42, second connector 43 cross arrangement, and first connector 42, second connector 43 is "ten" font, round hole 7 and the 1 inner wall fixed connection of rotary kiln barrel on the heat preservation bottom plate 21 are passed to the one end of connecting rod 41, the other end and first connector 42 of connecting rod 41, second connector 43 fixed connection, make first connector 42, second connector 43 is located the inside of wearing layer, with better messenger's wearing layer adhere to on the layer 22 is pour in the heat preservation, first connector 42, second connector 43 is trapezoidal platform form, and first connector 42, the cross section of second connector 43 is isosceles trapezoid. This design structure of grabbing nail 4 can make the area of contact increase between first connector 42, second connector 43 and the wear-resisting working layer 3 inside, makes grabbing nail 4 can be more firm fixed with wear-resisting working layer 3 and heat preservation 2.

The wear-resistant working layer 3 is poured by adopting a chromium-zirconium-aluminum wear-resistant pouring material, and the pouring thickness is 200 mm.

The heat-insulating pouring layer 22 adopts mullite hollow spheres and high-alumina light particles as aggregates and alumina cement as a bonding agent, and the pouring thickness is 150 mm.

The surface of the heat-preservation pouring layer 22 is provided with an expansion joint 8 along the axial direction of the rotary kiln cylinder 1. The width of the expansion joints 8 is 8 mm-10 mm, the distance between every two expansion joints 8 is 1400mm, and the expansion joints are distributed in a Z shape. The expansion of the liner when expanded by heat is compensated by the expansion gap 8 to prevent the liner from cracking and peeling due to thermal expansion.

The position of the wear-resistant working layer 3 at the head of the rotary kiln barrel body 1 is fixedly provided with an interception ridge 5 to prevent waste materials from leaking from a gap of the kiln head in operation, and the size of the interception ridge 5 is 100mm multiplied by 100 mm.

A rotary kiln for burning dangerous waste comprises a rotary kiln and a rotary kiln lining structure.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a rotary kiln lining structure, includes the rotary kiln barrel, its characterized in that: the rotary kiln comprises a rotary kiln barrel body, wherein a heat preservation layer is fixedly arranged on the inner wall of the rotary kiln barrel body, a wear-resistant working layer is fixedly arranged on the surface of the heat preservation layer, a grabbing nail is further arranged on the surface of the inner wall of the rotary kiln barrel body, one end of the grabbing nail penetrates through the heat preservation layer and is fixedly connected with the inner wall of the rotary kiln barrel body, the other end of the grabbing nail is located inside the wear-resistant working layer, the heat preservation layer comprises a heat preservation bottom plate, a heat preservation pouring layer is further arranged on the surface of the inner wall of the rotary kiln barrel body, a round hole for the grabbing nail to penetrate is formed in the surface of one side, far away from the rotary kiln barrel body, of the heat preservation bottom plate, a fixing column is further.

2. The rotary kiln lining structure as defined in claim 1, wherein: the grabbing nail comprises a connecting rod, a first connector, a second connector, the first connector, the second connector is arranged in a crossed mode, the first connector and the second connector are in a cross shape, one end of the connecting rod penetrates through a round hole in a heat-insulation bottom plate and is fixedly connected with the inner wall of a rotary kiln barrel, the other end of the connecting rod is fixedly connected with the first connector and the second connector, the first connector and the second connector are located inside a wear-resistant layer, the wear-resistant layer is attached to the heat-insulation pouring layer better, and the first connector and the second connector are in a trapezoidal table shape.

3. The rotary kiln lining structure as defined in claim 1, wherein: the wear-resistant working layer is poured by adopting a chromium-zirconium-aluminum wear-resistant pouring material, and the pouring thickness is 200 mm.

4. The rotary kiln lining structure as defined in claim 1, wherein: the heat-preservation pouring layer adopts mullite hollow spheres and high-alumina light particles as aggregates and alumina cement as a bonding agent, and the pouring thickness is 150 mm.

5. The rotary kiln lining structure as claimed in claim 2, wherein: the gripping nails are uniformly distributed at equal intervals and are fixedly arranged on the inner wall of the rotary kiln cylinder, and the distribution standard is 200mm multiplied by 200 mm.

6. The rotary kiln lining structure as defined in claim 4, wherein: and expansion joints are formed on the surface of the heat-insulating pouring layer along the axial direction of the rotary kiln cylinder.

7. The rotary kiln lining structure as claimed in claim 6, wherein: the width of the expansion joint is 8 mm-10 mm, the distance between every two expansion joints is 1400mm, and the expansion joints are distributed in a Z shape.

8. The rotary kiln lining structure as defined in claim 1, wherein: and the position of the wear-resistant working layer at the head of the rotary kiln cylinder body is fixedly provided with an interception ridge to prevent waste materials from leaking from a gap of the kiln head in operation, and the size of the interception ridge is 100mm multiplied by 100 mm.

9. The rotary kiln lining structure as defined in claim 1, wherein: and a conical head is fixedly arranged at one end of the fixing column, which is far away from the rotary kiln cylinder.

10. A rotary kiln for burning hazardous waste is characterized in that: the rotary kiln for hazardous waste incineration includes the rotary kiln inner liner structure of any one of claims 1 to 9.

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