Residual heat utilization type baking heat collection box
By installing heat collection boxes and baffles inside the kiln to optimize the flue gas flow path, the problem of uneven heating of the furnace wall caused by direct blowing of hot flue gas inside the kiln was solved, realizing the secondary utilization of flue gas waste heat and ensuring the quality of the refractory insulation layer.
Patent Information
- Application Number
- CN202522102154.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-29
AI Technical Summary
During the internal baking process of special kiln structures such as the lower heating holes of the gasification melting furnace, the confined space causes hot flue gas to directly hit the furnace wall, resulting in uneven heating of the furnace wall, which is prone to cracking and peeling, affecting the quality of the refractory insulation layer and the operation of the kiln.
A waste heat utilization baking heat collection box was designed. By installing a heat collection box and baffles inside the kiln, the flow path of flue gas is optimized to avoid hot flue gas blowing directly onto the furnace wall. The flue gas emission is controlled by a regulating valve, and the waste heat outlet is combined to realize the secondary utilization of flue gas and reduce energy waste.
It effectively solved the problem of uneven heating of the furnace wall, ensured the quality of the refractory insulation layer, and realized the secondary utilization of flue gas waste heat, reducing energy waste and the risk of burns to workers.
Smart Images
Figure CN224681233U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of heat collection boxes for baking kilns, specifically a waste heat utilization type baking heat collection box. Background Technology
[0002] In my country's industrial kiln sector, newly constructed kilns require kiln drying before commissioning of their internal wear-resistant insulation layers. This process removes crystalline and chemical water from the insulation layer, allowing the material to form an organic chemical bond and ensuring wear resistance. Conventional hot flue gas drying can meet the needs of most kilns. However, for special kiln structures such as those with heating holes at the bottom of gasification melting furnaces, the internal baking space is limited and refractory insulation layers are constructed. When conventional drying machines directly deliver hot flue gas through hot flue pipes, the confined space causes the hot flue gas to directly impact the furnace walls, resulting in uneven heating, cracking, and even detachment. This severely affects the quality of the refractory insulation layer and the normal operation of the furnace after startup. Therefore, there is an urgent need for a device suitable for drying kilns with special small spaces. Utility Model Content
[0003] To address the aforementioned problems, specifically those raised in the background section, this utility model proposes a waste heat utilization baking heat collection box, comprising a hot flue gas oven and a kiln. The heat collection box is installed inside the kiln, and a partition is installed inside the heat collection box, dividing the open end of the heat collection box into a heat inlet and a heat outlet. The heat outlet of the hot flue gas oven is connected to a hot flue gas inlet pipe via a flange, and the other end of the hot flue gas inlet pipe is connected to the heat inlet of the heat collection box. The heat outlet of the heat collection box is connected to a flue gas outlet pipe, and the other end of the flue gas outlet pipe is connected to a deflecting elbow via a flange. The other end of the deflecting elbow is connected to a waste heat outlet.
[0004] A further feature of this invention is that the air inlet chamber and the air outlet chamber within the heat collection box form a channel for the inlet and outlet of hot flue gas.
[0005] A further feature of this invention is that a ramp is installed on the flue gas outlet pipe, and a regulating valve is installed on the ramp.
[0006] A further feature of this invention is that the pipe wall of the waste heat outlet is a heat insulation layer.
[0007] A further feature of this invention is that a manhole is provided on the kiln.
[0008] The beneficial technical effects of this utility model are as follows: This utility model is designed for special small-space kiln baking scenarios. By combining the heat collection box and the partition, it avoids hot flue gas blowing directly onto the furnace wall, effectively solving the problems of uneven heating and easy cracking and falling off of the furnace wall, and ensuring the quality of the refractory insulation layer. At the same time, the ramp with the regulating valve makes it easy to control the amount of flue gas. The aluminum silicate board insulation layer at the waste heat outlet can prevent workers from being burned, and can introduce the waste heat into other parts that need to be baked for secondary use, fully recovering the heat of the waste gas, reducing energy waste and saving fuel. Attached Figure Description
[0009] Figure 1 A schematic diagram of the structure of this utility model is shown.
[0010] Figure 2 A schematic diagram of the solar collector box structure is shown.
[0011] Attached reference numerals: 1. Hot flue gas oven, 2. Flange, 3. Hot flue gas inlet pipe, 4. Manhole, 5. Heat collection box, 6. Baffle plate, 7. Kiln, 8. Ramp plate, 9. Regulating valve, 10. Turning elbow, 11. Waste heat outlet. Detailed Implementation
[0012] The following is a reference to the appendix. Figure 1-2 The preferred embodiments of this utility model are described below. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.
[0013] This utility model proposes a waste heat utilization baking heat collection box, including a hot flue gas oven 1 and a kiln 7. A manhole 4 is provided on the kiln 7, and a heat collection box 5 is installed inside the kiln 7 through the manhole 4. The heat collection box 5 is welded from heat-resistant steel plates. A partition 6 is installed inside the heat collection box 5, dividing the open end of the heat collection box 5 into a heat inlet and a heat outlet, allowing hot flue gas to enter and exit in a single manner. The hot flue gas in the hot flue gas oven 1 enters the cavity of the heat collection box 5 through the heat inlet, and is then transferred through heat radiation. The heat is used to heat and bake the furnace wall of kiln 7. Due to the limited space, the hot flue gas oven 1 blows in a large amount of hot flue gas. Some of the residual hot flue gas needs to be discharged, so it will be discharged through the heat outlet of the heat collector box 5. The air inlet and air outlet chambers in the heat collector box 5 form a channel for hot flue gas to enter and exit, optimizing the flue gas flow path. The setting of the heat collector box 5 and the baffle 6 prevents the hot flue gas from blowing directly onto the furnace wall, effectively solving the problem of uneven heating of the furnace wall and easy cracking and falling off when baking kilns in special small spaces, and ensuring the quality of the refractory insulation layer.
[0014] The hot flue gas oven 1 has a hot flue gas inlet pipe 3 connected to its heat outlet end via a flange 2. The flange 2 is made of heat-resistant steel plate. The other end of the hot flue gas inlet pipe 3 is connected to the heat inlet of the heat collector box 5. The heat outlet of the heat collector box 5 is connected to a flue gas outlet pipe. A ramp 8 is installed on the flue gas outlet pipe, and a regulating valve 9 is installed on the ramp 8. The regulating valve 9 controls the ramp 8 to regulate the discharge volume of the flue gas. The other end of the flue gas outlet pipe is connected to a deflector elbow 10 via the flange 2. The other end of the deflector elbow 10 is connected to a waste heat outlet 11. The heat insulation layer of the waste heat outlet 11 is made of aluminum silicate board to reduce waste heat loss and prevent burns to operating personnel. The waste heat outlet 11 is introduced into other areas that need to be baked, realizing the secondary utilization of flue gas, fully recovering the heat of the waste gas, reducing energy waste, and saving fuel.
[0015] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
[0016] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0017] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0018] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.
[0019] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.
Claims
1. A waste heat utilization type baking heat collection box, comprising a hot flue gas baking oven (1) and a kiln (7), characterized in that: The kiln (7) is equipped with a heat collection box (5), and the heat collection box (5) is equipped with a partition (6), which divides the open end of the heat collection box (5) into a heat inlet and a heat outlet. The hot flue gas oven (1) has a hot flue gas inlet pipe (3) connected to the heat outlet end via a flange (2). The other end of the hot flue gas inlet pipe (3) is connected to the heat inlet of the heat collector box (5). The heat outlet of the heat collector box (5) is connected to a flue gas outlet pipe. The other end of the flue gas outlet pipe is connected to a turning elbow (10) via a flange (2). The other end of the turning elbow (10) is connected to a waste heat outlet (11).
2. The waste heat utilization type baking heat collection box according to claim 1, characterized in that: The air inlet and outlet chambers within the heat collector (5) form a channel for hot flue gas to enter and exit.
3. The waste heat utilization type baking heat collection box according to claim 1, characterized in that: A ramp (8) is installed on the flue gas outlet pipe, and a regulating valve (9) is installed on the ramp (8).
4. The waste heat utilization type baking heat collection box according to claim 1, characterized in that: The wall of the waste heat outlet (11) is a heat insulation layer.
5. The waste heat utilization type baking heat collection box according to claim 1, characterized in that: The kiln (7) is provided with a manhole (4).