Membrane water-cooled wall incinerator

Abstract

The application provides a membrane water-cooled wall incinerator, which comprises a furnace body, a water-cooled wall installed in the furnace body and a heat exchange pipe row installed in the water-cooled wall, the furnace body comprises two half-spliced furnace walls, a connecting plate is arranged at the joint position of the two half-spliced furnace walls, the connecting plate connects the two half furnace walls and also shields the joint gap of the two half furnace walls, a supporting column is fixedly installed on the furnace wall, the water-cooled wall comprises a sealed inner wall arranged in the furnace body, the supporting column penetrates into the sealed inner wall, a cavity is arranged between the sealed inner wall and the furnace wall, the heat exchange pipe row is accommodated in the cavity, and the heat exchange pipe row and the supporting column are arranged in a spaced manner. The connecting plate is used for sealing and connecting the two half furnace walls and shielding the joint gap, the convenience of disassembling the furnace wall is ensured, the heat exchange pipe row can be replaced, maintained and detected without disassembling, and the cost of the operation process is reduced.

Description

Technical Field

[0001] This invention relates to membrane water-cooled wall incinerators, and more particularly to a membrane water-cooled wall incinerator. Background Technology

[0002] In treating waste gases and liquids, incinerators are commonly used equipment. They form a closed chamber into which atomized waste materials and mixed oxygen are introduced. After ignition within the incineration chamber, heat is released, creating a high-temperature environment. This reduces waste treatment costs when subsequent waste is incinerated. Patent No. CN117927940A discloses a superheater for use in waste incineration boilers. Specifically, it discloses the structure of the furnace chamber, including a superheater with heat exchange tube bundles directly attached to the furnace wall. During maintenance and inspection, these tube bundles need to be removed from the top, which can easily damage them during lifting and lowering, further increasing operating costs. Summary of the Invention

[0003] The technical problem that this invention aims to solve is that the cost of repairing, maintaining, and inspecting heat exchanger tube bundles in existing boilers is too high.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a membrane water-cooled wall incinerator, comprising a furnace body, a water-cooled wall installed in the furnace body, and a heat exchange tube bank installed in the water-cooled wall. The furnace body includes two halves of a furnace wall spliced ​​together, and a connecting plate is provided at the gap between the two halves of the furnace wall. The connecting plate connects the two halves of the furnace wall and also covers the gap between the two halves of the furnace wall. A support column is fixedly installed on the furnace wall. The water-cooled wall includes a sealed inner wall disposed in the furnace body. The support column is inserted into the sealed inner wall. A cavity is provided between the sealed inner wall and the furnace wall. The heat exchange tube bank is housed in the cavity. The heat exchange tube bank and the support column are arranged at intervals.

[0005] Furthermore, the heat exchange tube bank includes an annular tube coiled around the sealed inner wall, and the annular tube and the support column are arranged at intervals.

[0006] Furthermore, the heat exchange tube bank includes a plurality of vertical tubes arranged along the axis of the sealed inner wall, fins fixedly connected between each of the vertical tubes, and a pressure cover connecting the plurality of vertical tubes. The vertical tubes and the fins are arranged at intervals, and the support column passes through the fins.

[0007] Furthermore, a protrusion is provided on the sealed inner wall, and a groove is opened in the protrusion. The support column is inserted into the groove of the protrusion, the protrusion has a closed structure, and the protrusion extends into the furnace.

[0008] Furthermore, several rows of threaded holes are opened on the edges of the two furnace walls, and screws that fit into the threaded holes are installed on the connecting plate. There are multiple screws, and the threaded holes on the two furnace walls are staggered.

[0009] Furthermore, a sealing layer is attached to the surface of the connecting plate facing the joint of the furnace wall, and the sealing layer can provide heat insulation and sealing for the joint.

[0010] Furthermore, the heat exchange tube bank also includes inlet and outlet pipes that penetrate the furnace wall.

[0011] Furthermore, an inlet / outlet is provided on the furnace wall, which is located at the gap where the two furnace walls are joined. The inlet / outlet connects the inner and outer sides of the furnace wall, and the inlet / outlet pipe is housed within the inlet / outlet.

[0012] Furthermore, the water-cooled wall also includes a sealing ring fixed to the end of the sealed inner wall. There are two sealing rings, which are respectively disposed at both ends of the furnace wall and are engaged between the sealed inner wall and the furnace wall.

[0013] Furthermore, both the furnace wall and the sealed inner wall are provided with protruding pads, and the pads and the sealing ring are fitted together and embedded in each other.

[0014] The beneficial effect of this invention is that by using two halves of the furnace wall to surround the annular tube, and the support columns on the furnace wall are inserted into the protrusions to form a support and fixation for the annular tube, when it is necessary to repair, maintain and inspect the heat exchange tube bank, the furnace wall can be removed only after the connecting plate is removed, freeing up space for the repair, maintenance and inspection of the heat exchange tube bank, realizing the repair, maintenance and inspection of the heat exchange tube bank without disassembly, and reducing the cost of the process. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a perspective view of the membrane water-cooled wall incinerator of the present invention;

[0017] Figure 2 This is a perspective view of the membrane water-cooled wall incinerator of Example 1 (part of the furnace wall is omitted).

[0018] Figure 3 yes Figure 2 3D view of the water-cooled wall and heat exchange tube bank;

[0019] Figure 4 yes Figure 1 Side view;

[0020] Figure 5 It is along Figure 4Sectional view of AA;

[0021] Figure 6 This is a side view of the membrane water-cooled wall incinerator of Example 2;

[0022] Figure 7 It is along Figure 6 Sectional view of BB;

[0023] Figure 8 yes Figure 6 A three-dimensional view of the heat exchanger coils;

[0024] Figure 9 yes Figure 6 Side view;

[0025] Figure 10 It is along Figure 9 Sectional view of CC;

[0026] Figure 11 It is along Figure 9 Sectional view of DD;

[0027] In the figure: Furnace body 10, water-cooled wall 20, heat exchange tube bank 30, furnace wall 110, furnace cover 120, support column 111, connecting plate 112, screw 113, input pipe 121, sealing inner wall 210, sealing ring 220, collection section 230, protrusion 211, ring pipe 310, inlet and outlet pipe 320, inlet and outlet 330, pad block 40, vertical pipe 360, fin plate 340, pressure cover 350, pressure pipe 352, ring groove 351. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0029] Example 1

[0030] like Figures 1 to 5As shown, this embodiment provides a membrane water-cooled wall incinerator, including a furnace body 10, a water-cooled wall 20 installed in the furnace body 10, and a heat exchange tube bank 30 installed in the water-cooled wall 20. The water-cooled wall 20 is installed inside the furnace body 10 in a sandwich manner, and the heat exchange tube bank 30 is installed in the sandwich. Both ends of the heat exchange tube bank 30 extend out of the furnace body 10. Waste and mixed oxygen are injected into the furnace body 10 through the top using atomizing spray guns or other equipment. After being ignited in the furnace body 10, the mixture is continuously injected for decomposition. The waste is decomposed into water, carbon dioxide, and inorganic salts. Water and carbon dioxide are discharged from the top, while inorganic salts are collected from the bottom of the furnace body 10 into the ash bin. The heat exchange medium circulates in the heat exchange tube bank 30. In this embodiment, water is preferably used as the heat exchange medium. By controlling the flow rate of the heat exchange medium, the heat exchange rate of the heat exchange tube bank 30 can be adjusted, thereby changing the temperature inside the furnace body 10 and ensuring that the decomposition process of the waste inside the furnace body is carried out smoothly.

[0031] like Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the furnace body 10 includes a furnace wall 110 and a furnace cover 120 installed at the end of the furnace wall 110. The furnace wall 110 has a two-half columnar shell structure. Support columns 111 are arranged and installed inside the furnace wall 110. The support columns 111 are made of a hard material with high thermal conductivity, such as boron nitride, silicon carbide, or diamond. One end of the support column 111 is fixed to the furnace wall 110, and the other end of the support column 111 is set towards the axis of the furnace body 10. The end of the support column 111 extends into the heating zone. After being heated, the support column 111 can transfer heat to the other end. The two-half butt-jointed furnace wall 110 structure can reduce the gaps on the furnace wall 110 and enhance the sealing of the furnace body 10. Several rows of threaded holes are opened on the edge of the furnace wall 110. After the two furnace walls 110 are spliced ​​into a columnar structure, the threaded holes of the two furnace walls 110 are staggered. A connecting plate 112 is set at the splicing position of the two furnace walls 110. Screws 113 that fit into the threaded holes are installed on the connecting plate 112. There are multiple screws 113. The end of the screw 113 passes through the connecting plate 112 and is inserted into the threaded hole of the furnace wall 110. By using the mutual cooperation of the screws 113 and the threaded holes, the connecting plate 112 can be pressed against the edge of the furnace wall 110. The connecting plate 112 connects the two halves of the furnace wall 110 and also covers and seals the gap of the splicing of the furnace walls 110. The staggered threaded holes can reduce the impact of deformation when heated.

[0032] The furnace cover 120 is detachably installed on the top of the furnace wall 110. Several input pipes 121 are installed on the furnace cover 120. The input pipes 121 connect the inside and outside of the furnace wall 110. The atomizing spray gun that inputs mixed oxygen and atomized waste is inserted into the input pipe 121 and fixed on the furnace cover 120.

[0033] Preferably, a sealing layer is attached to the surface of the connecting plate 112 facing the splicing gap of the furnace wall 110. The sealing layer can insulate and seal the gap, preventing heat leakage caused by excessively large gaps.

[0034] like Figures 2 to 5 As shown, the water-cooled wall 20 includes a sealed inner wall 210 disposed inside the furnace body 10, a sealing ring 220 fixed to the end of the sealed inner wall 210, and a collection section 230 installed on the sealed inner wall 210.

[0035] The sealed inner wall 210 is housed within the furnace wall 110. The support column 111 is inserted into the sealed inner wall 210. The heat exchange tube array 30 and the support column 111 are arranged at intervals. Specifically, the sealed inner wall 210 is provided with a protrusion 211 corresponding to the support column 111. The protrusion 211 protrudes into the furnace chamber and has a groove. The end of the support column 111 is inserted into the groove of the protrusion 211. The protrusion 211 has a closed structure. Since the protrusion 211 extends into the furnace chamber, the heat in the furnace chamber is transferred to the support column 111 through the protrusion 211. There are two sealing rings 220, which are respectively set at both ends of the furnace wall 110. The sealing rings 220 are locked between the sealing inner wall 210 and the furnace wall 110. The sealing rings 220 are set corresponding to the collection section 230 and the furnace cover 120. The sealing rings 220 can seal the cavity between the sealing inner wall 210 and the furnace wall 110, further preventing heat leakage.

[0036] The collecting section 230 has a funnel-shaped structure. The large-diameter end of the collecting section 230 is positioned corresponding to the furnace wall 110 and is fixed to the sealed inner wall 210. The small-diameter end of the collecting section 230 faces the inorganic salt collection chamber. The inorganic salt in the furnace wall 110 flows along the inner wall of the collecting section 230 and is collected into the collection chamber.

[0037] like Figure 2 to, Figure 3 , Figure 5 As shown, the heat exchange tube bank 30 includes an annular tube 310 housed in the cavity between the sealed inner wall 210 and the furnace wall 110, and inlet and outlet pipes 320 respectively disposed at both ends of the annular tube 310.

[0038] The annular pipe 310 can be inserted into or removed along the axial direction of the furnace wall 110. The annular pipe 310 is coiled around the sealed inner wall 210. The annular pipe 310 and the support columns 111 are arranged at intervals. Specifically, the support columns 111 can support the annular pipe 310 and also exchange heat with the heat exchange medium inside the annular pipe 310. The heat from combustion inside the sealed inner wall 210 can be transferred to the vicinity of the annular pipe 310 through the support columns 111, and the heat is carried out by the heat exchange medium circulating in the annular pipe 310. The inlet and outlet pipes 320 penetrate the furnace wall 110 and are connected to the annular pipe 310. One inlet and outlet pipe 320 allows the heat exchange medium to flow into the annular pipe 310, and the other inlet and outlet pipe 320 allows the heat exchange medium to flow out of the annular pipe 310.

[0039] Preferably, an inlet / outlet 330 is provided on the furnace wall 110. The inlet / outlet 330 is located at the gap where the two furnace walls 110 are joined. The inlet / outlet 330 connects the inner and outer sides of the furnace wall 110. The inlet / outlet pipe 320 is housed in the inlet / outlet 320. When the two halves of the furnace wall 110 are disassembled, the inlet / outlet 330 expands, and the inlet / outlet pipe 320 can be removed from the furnace wall 110.

[0040] Preferably, both the furnace wall 110 and the sealed inner wall 210 are provided with protruding pads 40, the pads 40 and the sealing rings 220 correspond to each other, the pads 40 and the sealing rings 220 are embedded in each other, and the pads 40 and the sealing rings 220 cooperate with each other to seal the gaps at the ends of the furnace wall 110 and the sealed inner wall 210, thereby further enhancing the sealing performance of the furnace body 10.

[0041] When the heat exchange tube bank 30 needs to be installed, disassembled, or maintained in the above-described optimal embodiment, the connecting plate 112 can be removed from the furnace wall 110, the furnace wall 110 encircling the sealing inner wall 210 can be removed in half, the support column 111 can be pulled out from the protrusion 211, and the restraint on the inlet and outlet pipes 320 can be released when the furnace wall 110 is removed. Then, the heat exchange tube bank 30 can be removed from the collection section 230, and the heat exchange tube bank 30 can be installed by reversing the operation. When the heat exchange tube bank 30 needs to be inspected, only half of the furnace wall 110 needs to be removed to inspect the annular pipe 310 inside the furnace wall 110. After the inspection is completed, the furnace wall 110 can be installed, and the other half of the furnace wall 110 can be removed for a full inspection. The heat exchange tube bank 30 does not need to be removed during the above maintenance and inspection processes, reducing the travel costs of installation, disassembly, maintenance, and inspection.

[0042] Example 2

[0043] like Figures 6 to 11 As shown, in this embodiment, the heat exchange tube bank 30 adopts a pipe structure arranged in parallel, including a number of vertical tubes 360 arranged along the axis of the sealed inner wall 210, a fin plate 340 fixedly connected between each vertical tube 360, and a pressure cover 350 connecting the number of vertical tubes 360.

[0044] A vertical tube 360 ​​replaces the ring tube 310 in Embodiment 1. Several vertical tubes 360 are evenly arranged circumferentially along the inner sealing wall 210, with equal arrangement angles between them. Fins 340 and vertical tubes 360 are arranged alternately. Fins 340 are used to fix the arrangement structure of each vertical tube 360. The length of the vertical tube 360 ​​is greater than that of the fin 340, and both ends of the vertical tube 360 ​​extend beyond the fin 340. Preferably, the vertical tubes 360 and fins 340 are fixed by welding. The pressure cap 350 has a ring structure. The pressure cap 350 is installed on both ends of the vertical pipe 360. The pressure cap 350 has an annular groove 351. The pressure cap 351 also has a pressure pipe 352 that connects to the vertical pipe 360. The pressure pipe 352 connects the annular groove 351 and the vertical pipe 360. The inlet pipe 320 connects to the annular groove 351 of the pressure cap 350. The support column 111 passes through the fin plate 340 and is inserted into the sealed inner wall 210. The support column 111 fixes the heat exchange tube row 30 in the cavity between the sealed inner wall 210 and the furnace wall 110 through the support fin plate 340. After being pressurized, the heat exchange medium is injected into the annular groove 351 of the pressure cover 350 through the inlet / outlet pipe 320. The flowing heat exchange medium is evenly distributed to each vertical pipe 360 ​​through the annular groove 351. After flowing heat exchange, the heat exchange medium is collected in the annular groove 351 of the pressure cover 350 at the other end of the vertical pipe 360. After collection, the heat exchange medium is discharged from the inlet / outlet pipe 320, completing the heat exchange in the furnace.

[0045] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A membrane wall water-cooled wall incinerator characterized by: The utility model provides a kind of furnace body (10), water-cooled wall (20) and heat exchange tube row (30) are installed in the furnace body (10), the furnace body (10) includes two half spliced furnace wall (110), the gap position of two half spliced furnace wall (110) is provided with connecting plate (112), connecting plate (112) connects two half furnace wall (110) While also shielding the gap of two half furnace wall (110) splicing, support column (111) is fixedly installed on the furnace wall (110), the water-cooled wall (20) includes the sealed inner wall (210) being arranged in the furnace body (10), support column (111) is inserted into the sealed inner wall (210), cavity is equipped between the sealed inner wall (210) and the furnace wall (110), heat exchange tube row (30) is housed in the cavity, the lug (211) is protruded on the sealed inner wall (210), recess is opened in the lug (211), support column (111) is inserted into the recess of lug (211), the lug (211) is closed structure, the lug (211) extends into hearth, heat exchange tube row (30) and support column (111) are arranged at intervals, heat exchange tube row (30) includes a plurality of vertical pipes (360) being arranged along the axis of sealed inner wall (210), fin (340) being fixedly connected between each vertical pipe (360) and pressurizing cover (350) being communicated a plurality of vertical pipes (360), vertical pipe (360) and fin (340) are arranged at intervals, and support column (111) penetrates fin (340).

2. A membrane wall water cooled furnace according to claim 1, characterised in that: A plurality of rows of threaded holes are opened on the edges of the two furnace walls (110), and the connecting plates (112) are provided with screws (113) inserted into the threaded holes. The screws (113) are multiple, and the threaded holes on the two furnace walls (110) are arranged in a staggered manner.

3. A membrane wall water cooled furnace according to claim 1, wherein: The surface of the connecting plate (112) facing the splicing gap of the furnace wall (110) is attached with a sealing layer, which can thermally insulate and seal the gap.

4. A membrane wall water cooled furnace according to claim 1 wherein: The heat exchange tube row (30) further comprises an inlet and outlet pipe (320), and the inlet and outlet pipe (320) penetrates the furnace wall (110).

5. A membrane wall water cooled furnace according to claim 4, characterised in that: An inlet and outlet (330) is formed on the furnace wall (110), and the inlet and outlet (330) is formed at the gap between the two furnace walls (110). The inlet and outlet (330) is connected to the inside and outside of the furnace wall (110), and the inlet and outlet pipe (320) is accommodated in the inlet and outlet (330).

6. A membrane wall water cooled furnace according to claim 1 wherein: The water-cooled wall (20) further comprises a sealing ring (220) fixed to the end of the sealed inner wall (210), and the sealing ring (220) has two. The sealing ring (220) is arranged at the two ends of the furnace wall (110), and the sealing ring (220) is clamped between the sealed inner wall (210) and the furnace wall (110).

7. A membrane wall water cooled furnace according to claim 6, characterised in that: The furnace wall (110) and the sealing inner wall (210) are provided with a cushion block (40) protruding therefrom, and the cushion block (40) and the sealing ring (220) are matched and inlaid.

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