High-temperature waste gas heat energy recovery device
By using a refractory brick layer in the high-temperature exhaust gas heat recovery device to transfer heat energy to the heated water, the problems of large flow resistance, corrosion and scaling are solved, and the maintenance cost and heat energy loss are reduced.
Patent Information
- Application Number
- CN202421630918.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-07-10
AI Technical Summary
Existing high-temperature exhaust gas heat recovery devices have problems such as large flow resistance, corrosion and scaling of the return pipe, resulting in high maintenance costs and serious heat energy loss.
A refractory brick layer is laid inside the outer pipe through which exhaust gas flows. The heat energy is transferred to the heated water in the heated pipe through the refractory brick layer. The heated water is input and output from the water inlet tank. The heated pipe does not directly contact the exhaust gas to avoid corrosion and scaling.
This reduces maintenance costs and heat loss, and improves the efficiency and reliability of heat recovery devices.
Smart Images
Figure CN223307379U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hazardous waste treatment equipment and relates to a high-temperature waste gas heat energy recovery device. Background Art
[0002] High-temperature exhaust gas needs to be heat-recovered before being leached. On the one hand, it can reduce the leaching cost, and on the other hand, it can effectively utilize heat energy, such as using heat energy for boiler heating.
[0003] At present, most heat energy recovery methods use a return pipe to intercept high-temperature exhaust gas, allowing the exhaust gas to pass through the gap between the return pipes, converting the exhaust gas heat energy into flowing water, and then recovering the heated water. This method has a large exhaust gas flow resistance, and the return pipe is prone to corrosion and scaling. Utility Model Content
[0004] The purpose of the present invention is to provide a high-temperature exhaust gas heat energy recovery device in response to the above-mentioned problems existing in the existing technology. The technical problem to be solved by the present invention is how to reduce maintenance costs.
[0005] The purpose of the utility model can be achieved through the following technical solutions: a high-temperature exhaust gas heat energy recovery device, characterized in that it includes an exhaust gas flow outer pipe, a plurality of heated pipes uniformly distributed circumferentially in the exhaust gas flow outer pipe, the upper end of each heated pipe is connected to a water inlet tank, and the lower end of each heated pipe is connected to a water outlet tank, and the inner wall of the exhaust gas flow outer pipe is paved with a refractory brick layer.
[0006] Furthermore, the refractory brick layer is composed of a number of refractory bricks, which include an inner wall surface, an outer wall surface, two first splicing surfaces and two second splicing surfaces. The inner wall surface and the outer wall surface are parallel to and opposite to each other, the two first splicing surfaces are parallel to and opposite to each other, the two second splicing surfaces are symmetrical and opposite to each other, and the middle part of the second splicing surface has an arc-shaped limit opening corresponding to the heated tube.
[0007] In this way, heat energy is transferred through refractory bricks to the heated water in the heating tube. The heated water is continuously input from the water inlet tank and continuously output from the water outlet tank. The heating tube is not in direct contact with the exhaust gas, which not only avoids corrosion and scaling and reduces maintenance costs, but also reduces the loss of heat energy due to the existence of the heating tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural diagram of this recovery device.
[0009] Figure 2 This is an exploded view of the recovery device after removing the refractory brick layer and the exhaust gas flow outer pipe.
[0010] Figure 3 It is a transverse cross-sectional view of the exhaust gas flow outer pipe.
[0011] In the figure, 1. Exhaust gas flow outer pipe; 2. Heating pipe; 3. Water inlet tank; 4. Water outlet tank; 5. Refractory brick layer. DETAILED DESCRIPTION
[0012] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0013] like Figures 1 to 3 The high-temperature exhaust gas heat energy recovery device shown includes an exhaust gas flow outer pipe 1, a plurality of heat-receiving pipes 2 evenly distributed circumferentially inside the exhaust gas flow outer pipe 1, the upper end of each heat-receiving pipe 2 is connected to a water inlet tank 3, the lower end of each heat-receiving pipe 2 is connected to a water outlet tank 4, and the inner wall of the exhaust gas flow outer pipe 1 is paved with a refractory brick layer 5.
[0014] The refractory brick layer 5 is composed of several refractory bricks, which include an inner wall surface, an outer wall surface, two first splicing surfaces and two second splicing surfaces. The inner wall surface and the outer wall surface are parallel to and opposite to each other, the two first splicing surfaces are parallel to and opposite to each other, the two second splicing surfaces are symmetrical and opposite to each other, and the middle part of the second splicing surface has an arc-shaped limit opening corresponding to the heat tube 2.
[0015] In this way, heat energy is transmitted to the heated water in the heating tube 2 through the transfer of refractory bricks. The heated water is continuously input from the water inlet tank 3 and continuously output from the water outlet tank 4. The heating tube 2 is not directly in contact with the exhaust gas, which not only avoids corrosion and scaling and reduces maintenance costs, but also reduces the loss of heat energy due to the existence of the heating tube 2.
[0016] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.
Claims
1. A high-temperature exhaust gas heat energy recovery device, characterized in that: The invention comprises an exhaust gas flow outer pipe (1), a plurality of heat receiving pipes (2) uniformly distributed in the circumferential direction within the exhaust gas flow outer pipe (1), the upper end of each heat receiving pipe (2) being connected to a water inlet tank (3), and the lower end of each heat receiving pipe (2) being connected to a water outlet tank (4), and the inner wall of the exhaust gas flow outer pipe (1) being paved with a refractory brick layer (5).
2. A high-temperature exhaust gas heat energy recovery device according to claim 1, characterized in that: The refractory brick layer (5) is composed of a plurality of refractory bricks, and the refractory bricks include an inner wall surface, an outer wall surface, two first splicing surfaces, and two second splicing surfaces. The inner wall surface and the outer wall surface are parallel to and face each other, the two first splicing surfaces are parallel to and face each other, the two second splicing surfaces are symmetrical and face each other, and the middle of the second splicing surface has an arc-shaped limiting opening corresponding to the heated pipe (2).