RTO anti-blocking heat accumulating structure

Abstract

The utility model discloses a kind of RTO anti-blocking heat storage structures, it is related to waste gas treatment equipment technical field, it is arranged in RTO heat storage room, including by upper to lower sequentially arranged upper layer saddle ring layer, upper layer grating plate, honeycomb heat storage layer, lower layer grating plate and lower layer saddle ring layer;Honeycomb heat storage layer is formed by the splicing of several heat storage bodies, and heat storage body is cuboid, inside is honeycomb of straight-through square hole;Heat storage body top is provided with recess, bottom is provided with convex group, and convex group includes the big protrusion being arranged at the bottom of heat storage body and the small protrusion being arranged at the bottom center of big protrusion;The small protrusion of last layer heat storage body is adapted to insert into the recess of next layer heat storage body, and big protrusion is supported between upper and lower heat storage body, and form gap.The utility model realizes heat storage body accurate positioning installation, avoids misplacement, guarantees the gas flow passage between upper and lower heat storage body, reduces airflow resistance, simultaneously solves the problem of heat storage layer top layer and bottom layer blockage.

Description

Technical Field

[0001] This utility model relates to the technical field of waste gas treatment equipment, and in particular to an RTO anti-clogging heat storage structure. Background Technology

[0002] Regenerative thermal oxidizers (RTOs) are highly efficient treatment devices widely used in the field of industrial organic waste gas treatment. Their core component is the heat storage medium. The heat storage medium achieves efficient heat recovery and utilization through alternating heat absorption and release, which is key to reducing the energy consumption of RTO equipment. Its heat exchange efficiency and anti-clogging performance directly determine the operational stability, energy consumption level, and service life of the RTO equipment.

[0003] During the actual installation of the heat storage body, traditional manual alignment methods are prone to interlayer misalignment, leading to obstructed airflow channels, significantly increased resistance, and consequently exacerbating the risk of blockage. To address this issue, the applicant has conducted targeted research for many years and applied for numerous patents related to heat storage bodies: patent 201120084297.6 discloses a honeycomb-shaped heat storage body with grooves on the bottom surface, and patent 201420168076.0 discloses a heat storage body with supporting bosses. Both patents achieve optimized airflow and reduced resistance by setting gap structures between the upper and lower layers of the heat storage body, thus preventing blockage. However, the gap design also results in insufficient positioning accuracy between heat storage body layers, leading to poor overall structural stability.

[0004] In addition, the applicant's patent 201821448939.4 designed a saddle ring anti-clogging device on the top of the heat storage body. This patent achieves the interception of particulate matter such as silica by setting a saddle ring anti-clogging device on the top of the heat storage body. However, the single-layer saddle ring structure can only act on the top of the heat storage layer, which is difficult to deal with the problem of accumulation and blockage of inorganic salts such as ammonium salts, sulfates, chlorides, and nitrates in the waste gas of industries such as medical and chemical and agricultural chemicals at the bottom of the heat storage layer. There is still a technical shortcoming of incomplete anti-clogging range. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the above-mentioned technologies and provide an RTO anti-clogging heat storage structure, which enables precise positioning and installation of the heat storage body, avoids misalignment, ensures the gas flow channel between the upper and lower heat storage bodies, reduces airflow resistance, and solves the problem of blockage at the top and bottom layers of the heat storage layer.

[0006] The technical solution adopted in this utility model is as follows:

[0007] An RTO anti-clogging heat storage structure, disposed within an RTO heat storage chamber, is characterized by comprising, from top to bottom, an upper saddle ring layer, an upper grid plate, a honeycomb heat storage layer, a lower grid plate, and a lower saddle ring layer; the honeycomb heat storage layer is composed of several heat storage elements spliced ​​together, each heat storage element being a cuboid with a honeycomb structure containing straight-through square holes; the top of each heat storage element has a groove, and the bottom has a protrusion group, the protrusion group including a large protrusion at the bottom of the heat storage element and a small protrusion at the center of the bottom of the large protrusion; the small protrusion of the upper heat storage element is adapted to insert into the groove of the lower heat storage element, and the large protrusion is supported between the upper and lower heat storage elements, forming a gap.

[0008] A further improvement of this utility model is that each heat storage body has five grooves and protrusions, which are respectively located at the center and four corners of its surface. Through the four corners and center positioning design, the force between the heat storage body layers can be uniform, avoiding tilting caused by single corner positioning.

[0009] A further improvement of this utility model is that the outer diameter of the large protrusion is larger than the outer diameter of the small protrusion, and the height of the small protrusion is less than the depth of the groove, thus reserving space for thermal expansion.

[0010] A further improvement of this utility model is that both the upper saddle ring layer and the lower saddle ring layer are made of several ceramic saddle rings, and the laying height is 1 / 2 of the height of a single-layer heat storage body.

[0011] A further improvement of this utility model is that the edges of both the upper and lower grating plates are fixed to the inner wall of the heat storage chamber.

[0012] A further improvement of this utility model is that the honeycomb pores of the heat storage body are square, with a side length of 2.5-3.5mm, a pore wall thickness of 0.7-0.9mm, and a pore number of 40-43.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model achieves a targeted anti-blocking effect. By setting an upper saddle ring layer and a lower saddle ring layer, it can intercept silica particles that block the top layer of the honeycomb heat storage layer and diffuse to the lower layer. At the same time, the irregular structure of the ceramic saddle ring can disperse the airflow and reduce the local deposition of silica. It can also intercept inorganic salts and prevent them from condensing and depositing at the bottom layer.

[0015] 2. This utility model achieves precise positioning of the heat storage body by setting a small protrusion-groove structure on the heat storage body, avoiding airflow channel blockage caused by manual installation misalignment, reducing installation difficulty. At the same time, the large protrusion forms a certain gap, providing an additional flow channel for gas. Even if the honeycomb holes are misaligned, the airflow can still flow smoothly through the gap, reducing airflow resistance.

[0016] 3. This utility model ensures full contact between the hot airflow and the heat storage body by closely cooperating the upper and lower saddle ring layers and the honeycomb heat storage layer, thus achieving a balance between anti-blocking and heat exchange efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a front view of the heat storage body of this utility model.

[0019] Figure 3 This is a top view of the heat storage body of this utility model.

[0020] Figure 4 This is a schematic diagram of the assembly of the heat storage body of this utility model.

[0021] In the diagram: RTO heat storage chamber 1, upper saddle ring layer 2, upper grid plate 3, honeycomb heat storage layer 4, lower grid plate 5, lower saddle ring layer 6, heat storage body 7, groove 8, protrusion group 9, large protrusion 10, small protrusion 11. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0023] like Figure 1-4 As shown, an RTO anti-clogging heat storage structure is installed in the RTO heat storage chamber 1, including an upper saddle ring layer 2, an upper grid plate 3, a honeycomb heat storage layer 4, a lower grid plate 5, and a lower saddle ring layer 6 arranged sequentially from top to bottom; the honeycomb heat storage layer 4 is composed of several heat storage bodies 7 spliced ​​together, the heat storage body 7 is a cuboid with a honeycomb shape of straight through square holes inside; the top of the heat storage body 7 is provided with a groove 8, and the bottom is provided with a protrusion group 9, the protrusion group 9 includes a large protrusion 10 set at the bottom of the heat storage body 7 and a small protrusion 11 set at the center of the bottom of the large protrusion 10; the small protrusion 11 of the upper heat storage body 7 is adapted to be inserted into the groove 8 of the lower heat storage body 7, and the large protrusion 10 is supported between the upper and lower heat storage bodies 7 to form a gap.

[0024] In this embodiment, each heat storage body 7 has five grooves 8 and five protrusions 9, which are respectively located at the center and four corners of its surface. Through the four corners and center positioning design, the heat storage body 7 can be evenly stressed between layers, avoiding tilting caused by single corner positioning.

[0025] In this embodiment, the outer diameter of the large protrusion 10 is larger than the outer diameter of the small protrusion 11, and the height of the small protrusion 11 is less than the depth of the groove 8, so as to reserve space for thermal expansion.

[0026] In this embodiment, both the upper saddle ring layer 2 and the lower saddle ring layer 6 are made of several ceramic saddle rings, and the laying height is 1 / 2 of the height of the single-layer heat storage body 7.

[0027] In this embodiment, the edges of both the upper grating plate 3 and the lower grating plate 5 are fixed to the inner wall of the heat storage chamber.

[0028] In this embodiment, the honeycomb pores of the heat storage body 7 are square, with a side length of 2.5-3.5 mm, a pore wall thickness of 0.7-0.9 mm, and a number of pores of 40-43.

[0029] Further explanation: Both the upper grating plate 3 and the lower grating plate 5 in this utility model are made of 310S stainless steel. This material can withstand the long-term high-temperature conditions of 1800-1200℃ in the RTO heat storage chamber and has excellent resistance to flue gas corrosion, avoiding the problems of high-temperature deformation or corrosion cracking of traditional carbon steel grating plates. The lower grating plate 5 corresponds to the position of the bottom protrusion group 9 of the heat storage body 7, and has pre-set positioning holes that fit the protrusion group 9, enabling one-click positioning of the heat storage body 7 on the lower grating plate 5. This not only restricts the horizontal displacement of the heat storage body 7 but also ensures the interlayer alignment accuracy when splicing multiple heat storage bodies 7, avoiding misalignment deviations during manual installation.

[0030] The heat storage body 7 is integrally extruded using a cordierite-mullite composite material mold. Its top groove 8 and bottom protrusion group 9 are simultaneously processed by a special molding mold, eliminating the need for subsequent cutting or grinding.

[0031] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An RTO anti-clogging heat storage structure, which is disposed in the RTO heat storage chamber, characterized in that, The system comprises, from top to bottom, an upper saddle ring layer, an upper grid plate, a honeycomb heat storage layer, a lower grid plate, and a lower saddle ring layer. The honeycomb heat storage layer is composed of several heat storage elements spliced ​​together. Each heat storage element is a cuboid with a honeycomb structure containing straight square holes. The top of each heat storage element has a groove, and the bottom has a set of protrusions. The set of protrusions includes a large protrusion at the bottom of the heat storage element and a small protrusion at the center of the bottom of the large protrusion. The small protrusion of the upper heat storage element is adapted to be inserted into the groove of the lower heat storage element, and the large protrusion is supported between the upper and lower heat storage elements, forming a gap.

2. The RTO anti-clogging heat storage structure according to claim 1, characterized in that, Each heat storage body has five grooves and protrusions, which are respectively located at the center and four corners of its surface.

3. The RTO anti-clogging heat storage structure according to claim 1, characterized in that, The outer diameter of the large protrusion is larger than the outer diameter of the small protrusion, and the height of the small protrusion is less than the depth of the groove.

4. The RTO anti-clogging heat storage structure according to claim 1, characterized in that, Both the upper and lower saddle ring layers are made up of several ceramic saddle rings, and the laying height is 1 / 2 of the height of a single-layer heat storage body.

5. The RTO anti-clogging heat storage structure according to claim 1, characterized in that, The edges of both the upper and lower grating plates are fixed to the inner wall of the heat storage chamber.

6. The RTO anti-clogging heat storage structure according to claim 1, characterized in that, The heat storage body has square honeycomb pores with a side length of 2.5-3.5 mm, a wall thickness of 0.7-0.9 mm, and a number of pores of 40-43.

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