Curing and baking structure for castable of coal injection duct in rotary cement kiln
By designing a splicing coal jet pipe pipe pouring material to maintain and baking structure, it solves the problem of damage to the coal jet pipe watering in the cement rotating kiln in high temperature environments, and realizes the improvement of efficient maintenance and construction safety.
Patent Information
- Application Number
- CN202420844746.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The refractory castable material of the coal spray pipe in the cement rotary kiln is easily damaged in high temperature environments, resulting in the suspension of production in the kiln, and the construction conditions in the kiln are harsh, resulting in the reduction of construction personnel and increased organizational difficulties.
Designed a splicing coal jet pipe pipe pouring material to maintain and bake structure, including supporting the chain structure and splicing coal jet pipe oven structure. The carbon fiber quartz heating pipes are used to meet the temperature in the box to meet the pouring water. The maintenance temperature requirements.
The efficient maintenance of coal jet pipe watering is realized, the labor intensity and safety risks are reduced, the use cycle of the watering is extended, and the needs of construction personnel in the kiln have been reduced.
Smart Images
Figure CN222418550U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of cement rotary kilns, in particular to a coal injection pipe castable curing and baking structure in a cement rotary kiln. Background Art
[0002] The outer shell of the coal injection pipe (also called burner, as shown in the figure) of the cement rotary kiln heating equipment is a 10-centimeter-thick refractory castable. This layer of castable protects the steel pipe body of the coal injection pipe from being worn and eroded by the high-temperature, high-speed flowing cement clinker particles, allowing it to work normally in the kiln.
[0003] After the coal injection pipe has worked in the kiln for a period of time (12-18 months), the outer protective castable will be damaged as shown in the figure. At this time, it is necessary to carry out partial repair or replace the castable as a whole to protect the burner from being damaged by the high-temperature gas and clinker particles. If this happens, the material will be stopped, the kiln will be stopped, the burner will be pulled out, the outer castable will be removed, the anchor will be re-welded, and the mold will be cast with new castable.
[0004] Due to the harsh working environment of the coal injection pipe, the refractory castable used is a high-strength refractory castable that is resistant to high temperature and wear. This type of castable has strict requirements on the ambient temperature of its curing after pouring. It requires that the initial 12 hours of curing with molds be carried out in an environment of 30 degrees to 50 degrees, and the later 24 hours of curing be carried out in an environment of 50-150 degrees. Purpose: To eliminate the mechanically adsorbed moisture in the castable, while also taking into account the crystal transformation of γ-tridymite to β-tridymite and finally to α-tridymite in the castable particles, which is beneficial to the thermal stability of the castable when the burner is in a working environment of 900-1100 degrees, and ensure the service life of the castable. At present, the curing of this castable adopts the method of open flame heating: first set up a curing tent to cover the coal injection pipe to be cured as a whole, and then use an empty large iron barrel with firewood burning inside to bake under the coal injection pipe. This method has many disadvantages: large smoke and unstable temperature, continuous addition of firewood is required, and the ambient temperature requirements for later curing cannot be met. Utility Model Content
[0005] The purpose of the utility model is to provide a spliced coal injection pipe castable curing and baking structure in a cement rotary kiln to solve the problems of refractory brick masonry operations in the kiln, such as relatively narrow space, poor ventilation conditions, high temperature, frequent internal diffusion of dust and harmful gases, high construction safety risks, and each brick weighs 11 kg. Therefore, fewer and fewer people are willing to engage in this work and fewer and fewer construction workers are competent for refractory brick masonry in the kiln, and construction organization becomes more and more difficult. It is urgently needed to achieve the purpose of reducing manpower and increasing efficiency, reducing labor intensity, and reducing safety risks through intelligent transformation of masonry operations.
[0006] The technical solution adopted by the utility model to solve its technical problems is: a coal-injection pipe castable curing and baking structure in a cement rotary kiln, comprising a supporting frame structure and a spliced coal-injection pipe baking box structure arranged on the upper part of the supporting frame structure, the supporting frame structure comprising a group of transverse bearing seats arranged at intervals and a supporting leg body arranged at the lower part of the transverse bearing seat, the spliced coal-injection pipe baking box structure comprising an introduction end baking box structure, a top end baking box structure and one or more middle baking box structures arranged between the introduction end baking box structure and the top end baking box, the introduction end baking box structure, the top end baking box structure and the middle baking box structure are horizontally arranged on the upper part of the supporting frame structure.
[0007] The introduction end baking box structure includes an introduction baking box frame, an introduction port arranged on the introduction baking box frame, an introduction port arranged at one end of the introduction baking box frame, a group of introduction end body heating parts are arranged on the left and right sides of the introduction baking box frame, and an introduction end lining insulation board is arranged on the bottom surface of the introduction baking box frame.
[0008] The middle baking box body comprises a middle baking box frame body, a group of middle body heating body parts are respectively arranged at the left and right sides of the middle baking box frame body, and a middle lining heat insulation board is arranged on the bottom surface of the middle baking box frame body.
[0009] The top baking box structure comprises a top baking box frame, top heating elements are arranged at the left and right ends of the top baking box frame, and a top lining heat insulation board is arranged on the bottom surface of the top baking box frame.
[0010] The introduction end body heating body, the middle body heating body and the top end heating body are carbon fiber quartz heating pipe parts.
[0011] The outer edges of the introduction baking box frame body, the middle baking box frame body and the top baking box frame body are provided with splicing ear seats for butting the baking box frame bodies.
[0012] Each baking oven frame body including the introduction baking oven frame body, the middle baking oven frame body and the top baking oven frame body is evenly provided with ventilation holes.
[0013] The beneficial effects of the utility model are as follows: the curing and baking structure of the coal injection pipe castable is a spliced heating oven structure, and the power of each heating oven structure is 2000-6000W, and the variable temperature in the box can reach room temperature to +200 degrees. It meets the curing temperature requirements of the burner castable after the construction is completed. At the same time, it can be adjusted according to the length of the burner castable to achieve the purpose of energy saving and consumption reduction. As a special oven for the curing of the burner castable, the oven is simple to make, the material is easy to obtain, and the splicing is convenient and environmentally friendly.
[0014] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model.
[0016] Figure 2 for Figure 1 Schematic diagram of the construction of the supporting base frame structure.
[0017] Figure 3 for Figure 1 Schematic diagram of the construction of the introduction end baking box structure.
[0018] Figure 4 for Figure 1 Schematic diagram of the construction of the middle baking box structure.
[0019] Figure 5 for Figure 1 Schematic diagram of the top baking box structure.
[0020] In the figure: 1. lateral bearing seat, 2. support leg body, 3. introduction baking oven frame body, 4. introduction port, 5. introduction end body heating body, 6. introduction end lining insulation board, 7. middle baking oven frame body, 8. middle body heating body, 9. middle lining insulation board, 10. top baking baking oven frame body, 11. top heating body, 12. top lining insulation board, 13. splicing ear seat, 14. air vent, 15. coal injection pipe, 16. mobile carrier, 17. configuration block. DETAILED DESCRIPTION
[0021] The directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like in the application text are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0023] Embodiment 1, as Figure 1-5 As shown, the coal injection pipe castable curing and baking structure in the cement rotary kiln includes a supporting frame structure and a spliced coal injection pipe baking box structure arranged on the upper part of the supporting frame structure. The supporting frame structure includes a group of spaced-apart transverse bearing seats and a support leg body 2 arranged at the lower part of the transverse bearing seat 1. The spliced coal injection pipe baking box structure includes an introduction end baking box structure, a top end baking box structure and a middle baking box structure used for one or more connections between the introduction end baking box structure and the top end baking box. The introduction end baking box structure, the top end baking box structure and the middle baking box structure are horizontally arranged on the upper part of the supporting frame structure. The coal injection pipe castable curing and baking structure is also used in conjunction with the coal injection pipe castable curing and baking structure through a coal injection pipe auxiliary connection device. The coal injection pipe auxiliary connection device includes a coal injection pipe 15, a mobile carrier 16 connected to the coal injection pipe 15, and a configuration block 17 arranged on the mobile carrier 16.
[0024] The introduction end baking box structure includes an introduction baking box frame body 3, an introduction port 4 arranged on the introduction baking box frame body and arranged at one end of the introduction baking box frame body, a group of introduction end body heating body parts 5 are arranged on the left and right sides of the introduction baking box frame body, and an introduction end lining insulation board 6 is arranged on the bottom surface of the introduction baking box frame body.
[0025] The middle baking box body comprises a middle baking box frame body 7, a group of middle body heating body parts 8 are respectively arranged at the left and right sides of the middle baking box frame body, and a middle lining insulation board 9 is arranged on the bottom surface of the middle baking box frame body.
[0026] The top baking box structure comprises a top baking box frame 10, top heating elements 11 respectively arranged at the left and right sides of the top baking box frame, and a top lining insulation board 12 arranged on the bottom surface of the top baking box frame.
[0027] The introduction end heating body 5, the middle body heating body 8 and the top end heating body 11 are carbon fiber quartz heating pipe components.
[0028] The outer edges of the introduction baking oven frame 3, the middle baking oven frame 7 and the top baking oven frame 10 are provided with joint ear seats 13 for butting the baking oven frames.
[0029] The baking oven frame bodies including the introduction baking oven frame body 3, the middle baking oven frame body 7 and the top baking oven frame body 10 are evenly distributed with air holes 14.
[0030] The curing and baking structure of the coal injection pipe castable is a spliced heating oven structure. The power of each heating oven structure is 2000-6000W, and the variable temperature in the box can reach room temperature to +200 degrees. It meets the curing temperature requirements of the burner castable after the construction is completed. At the same time, it can be adjusted according to the length of the burner castable to achieve the purpose of energy saving and consumption reduction. As a special oven for the curing of burner castables, the oven is simple to make, the materials are easy to obtain, the splicing is convenient, and the work is environmentally friendly.
[0031] The above embodiments are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.
[0032] The parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art.
Claims
1. A curing and baking structure for coal injection pipe castables in a cement rotary kiln, characterized in that: It includes a supporting frame structure and a spliced coal-injected pipe baking box structure arranged on the upper part of the supporting frame structure, the supporting frame structure includes a group of spaced-apart transverse bearing seats and a supporting leg body arranged at the lower part of the transverse bearing seats, the spliced coal-injected pipe baking box structure includes an introduction end baking box structure, a top end baking box structure and one or more middle baking box structures arranged between the introduction end baking box structure and the top end baking box, the introduction end baking box structure, the top end baking box structure and the middle baking box structure are horizontally arranged on the upper part of the supporting frame structure.
2. The coal injection pipe castable curing and baking structure in the cement rotary kiln according to claim 1, characterized in that: The introduction end baking box structure includes an introduction baking box frame, an introduction port arranged on the introduction baking box frame, an introduction port arranged at one end of the introduction baking box frame, a group of introduction end body heating parts are arranged on the left and right sides of the introduction baking box frame, and an introduction end lining insulation board is arranged on the bottom surface of the introduction baking box frame.
3. The curing and baking structure for coal injection pipe castable in cement rotary kiln according to claim 1, characterized in that: The middle baking box body comprises a middle baking box frame body, a group of middle body heating body parts are respectively arranged at the left and right sides of the middle baking box frame body, and a middle lining heat insulation board is arranged on the bottom surface of the middle baking box frame body.
4. The curing and baking structure for coal injection pipe castable in cement rotary kiln according to claim 1, characterized in that: The top baking box structure comprises a top baking box frame, top heating elements are arranged at the left and right ends of the top baking box frame, and a top lining heat insulation board is arranged on the bottom surface of the top baking box frame.
5. The curing and baking structure for coal injection pipe castable in cement rotary kiln according to claim 2, 3 or 4, characterized in that: The introduction end body heating body, the middle body heating body and the top end heating body are carbon fiber quartz heating pipe parts.
6. The curing and baking structure for coal injection pipe castable in cement rotary kiln according to claim 2, 3 or 4, characterized in that: The outer edges of the introduction baking box frame body, the middle baking box frame body and the top baking box frame body are provided with joint ear seats for butting the baking box frame bodies.
7. The curing and baking structure for coal injection pipe castable in cement rotary kiln according to claim 2, 3 or 4, characterized in that: Ventilation holes are evenly distributed on each baking oven frame body that is introduced into the baking oven frame body, the middle baking oven frame body, and the top baking oven frame body.