Horizontal waste heat boiler

Abstract

The utility model discloses a horizontal waste heat boiler which comprises a boiler body and a steel frame. The boiler comprises a water cooling wall, a lower collecting box, an upper collecting box, a steam pocket, a descending pipe and an ascending pipe. A plurality of lower header supports are arranged at the bottom of the lower header; a downcomer support is arranged at the bottom of the downcomer; and a plurality of connecting pieces are arranged between the water cooling wall and the downcomer. According to the horizontal waste heat boiler with the structure, the boiler is supported by the lower header support, the steam pocket is supported by the downcomer support through the downcomer, and meanwhile, the ascending pipe can play a certain role in supporting the steam pocket, so that the steel frame does not bear the weight of the horizontal waste heat boiler, and the bearing capacity of the steel frame only needs to ensure that people can walk on the steel frame; therefore, the steel frame can be made thin and thin, consumables of the steel frame are reduced by 35% compared with consumables of a steel frame on a suspension type horizontal waste heat boiler of the same type, the weight of the steel frame is greatly reduced, and cost is reduced. The occupied area of the boiler is reduced by about 25%, and the whole boiler is more compact.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste heat boiler equipment technical field especially relates to a horizontal waste heat boiler. BACKGROUND

[0002] The conventional horizontal waste heat boiler comprises a boiler 1 and a steel frame 2, the boiler 1 is installed in the mode of being suspended on the steel frame 2 in the prior art, as shown in the figure, the boiler 1 is suspended on the steel frame 2 through a suspension structure 3, a steam drum 5 on the boiler 1 is fixed on the steel frame 2 through a steam drum support 4, at this time, the steel frame 2 needs to bear the weight of the horizontal waste heat boiler, therefore the steel frame 2 must be thickened to ensure that the overall bearing capacity of the steel frame 2 can bear the weight of the horizontal waste heat boiler, but this will inevitably increase the consumption material, increase the weight of the steel frame and increase the cost. Figure 1 SUMMARY

[0003] The utility model needs to solve the technical problem of providing a horizontal waste heat boiler that reduces the consumption material of the steel frame, reduces the weight of the steel frame and reduces the cost.

[0004] The utility model overcomes the defects of large consumption material of the steel frame, heavy steel frame and high cost caused by the suspension type boiler in the prior art, and adopts the technical scheme that the horizontal waste heat boiler comprises a boiler and a steel frame, the boiler comprises a water cooling wall, a lower header, an upper header, a steam drum, a downcomer and an upcomer, a plurality of lower header supports are arranged at the bottom of the lower header, a downcomer support is arranged at the bottom of the downcomer, and a plurality of connecting pieces are arranged between the water cooling wall and the downcomer.

[0005] For the convenience of description, the area where the horizontal waste heat boiler is installed is uniformly referred to as a bottom platform, the boiler is supported on the bottom platform through the lower header supports, and the steam drum is supported on the bottom platform through the downcomer, so that the steel frame does not bear the weight of the horizontal waste heat boiler, and the bearing capacity of the steel frame only needs to ensure that a person can walk on the steel frame, so that the steel frame can be thin and fine, the consumption material of the steel frame is reduced by 35% compared with the steel frame of the same type of suspension type horizontal waste heat boiler, the weight of the steel frame is greatly reduced, and the cost is reduced.

[0006] Further, the horizontal waste heat boiler comprises a full water cooling wall structure, and the full water cooling wall structure has the following main advantages: first, the sealing performance is good, the flue gas basically does not leak, and the corrosion rate is reduced; second, a large number of evaporation heating surfaces are arranged on the full water cooling wall, and the overall structure is more compact, a large amount of evaporation heating surface header and connecting pipeline can be saved, and the specific arrangement is as follows:

[0007] ​The water cooling wall comprises a left water cooling wall and a right water cooling wall; the lower header comprises a left water cooling wall lower header and a right water cooling wall lower header; the upper header comprises a left water cooling wall upper header and a right water cooling wall upper header; the downcomer comprises a left downcomer and a right downcomer;

[0008] The left water cooling wall lower header and the right water cooling wall lower header are communicated through several horizontal connecting pipes, and each two adjacent connecting pipes and the opening formed between the left water cooling wall and the right water cooling wall are sealingly connected with a hopper; the left water cooling wall lower header and the left water cooling wall upper header are communicated through a left water cooling wall; the right water cooling wall lower header and the right water cooling wall upper header are communicated through a right water cooling wall;

[0009] A left downcomer connecting pipe is arranged on the left water cooling wall lower header, and a left downcomer connecting pipe is arranged on the steam drum; the left downcomer is connected to the left downcomer connecting pipe and the left downcomer connecting pipe, and the left downcomer is located on the left side of the left water cooling wall;

[0010] A right downcomer connecting pipe is arranged on the right water cooling wall lower header, and a right downcomer connecting pipe is arranged on the steam drum; the right downcomer is connected to the right downcomer connecting pipe and the right downcomer connecting pipe, and the right downcomer is located on the right side of the right water cooling wall;

[0011] The downcomer support has two, respectively located at the bottom of the left downcomer and the bottom of the right downcomer;

[0012] The connecting pieces are distributed between the left water cooling wall and the left downcomer and between the right water cooling wall and the right downcomer;

[0013] The upcomer comprises a plurality of left water cooling wall upper header upcomers and a plurality of right water cooling wall upper header upcomers;

[0014] A plurality of left upcomer connecting pipes are arranged on the left water cooling wall upper header, and a plurality of left water cooling wall upper header upcomer connecting pipes are arranged on the steam drum; the number of the left water cooling wall upper header upcomer connecting pipes and the left upcomer connecting pipes is consistent with the number of the left water cooling wall upper header upcomers; each left water cooling wall upper header upcomer is connected to the corresponding left water cooling wall upper header upcomer connecting pipe and left upcomer connecting pipe;

[0015] A plurality of right upcomer connecting pipes are arranged on the right water cooling wall upper header, and a plurality of right water cooling wall upper header upcomer connecting pipes are arranged on the steam drum; the number of the right water cooling wall upper header upcomer connecting pipes and the right upcomer connecting pipes is consistent with the number of the right water cooling wall upper header upcomers; each right water cooling wall upper header upcomer is connected to the corresponding right water cooling wall upper header upcomer connecting pipe and right upcomer connecting pipe;

[0016] The lower header supports are distributed on the bottom of the left water-cooled wall lower header and the bottom of the right water-cooled wall lower header.

[0017] Further, the aforementioned horizontal waste heat boiler, wherein the number of the lower header supports on the bottom of the left water-cooled wall lower header and the bottom of the right water-cooled wall lower header is equal, and each of the lower header supports on the bottom of the left water-cooled wall lower header is arranged in uniform interval from front to back along the bottom of the left water-cooled wall lower header, and each of the lower header supports on the bottom of the right water-cooled wall lower header is arranged in uniform interval from front to back along the bottom of the right water-cooled wall lower header.

[0018] Further, the aforementioned horizontal waste heat boiler, wherein among the lower header supports on the left water-cooled wall lower header, the lower header support at the middle position of the left water-cooled wall lower header is the first lower header support, the lower header supports at the left water-cooled wall lower header in front of the first lower header support are the second lower header supports, and the lower header supports at the left water-cooled wall lower header behind the first lower header support are the third lower header supports.

[0019] Among the lower header supports on the right water-cooled wall lower header, the lower header support at the middle position of the right water-cooled wall lower header is the fourth lower header support, the lower header supports at the right water-cooled wall lower header in front of the fourth lower header support are the fifth lower header supports, and the lower header supports at the right water-cooled wall lower header behind the fourth lower header support are the sixth lower header supports.

[0020] The first lower header support on the left water-cooled wall lower header is fixedly connected with the bottom platform, the second lower header supports and the third lower header supports on each of the left water-cooled wall lower headers are in sliding contact with the bottom platform, and the fourth lower header support, the fifth lower header supports and the sixth lower header supports on the right water-cooled wall lower header are in sliding contact with the bottom platform.

[0021] Further, the aforementioned horizontal waste heat boiler, wherein the number of the left water-cooled wall upper header riser pipes and the number of the right water-cooled wall upper header riser pipes are equal, and each of the left water-cooled wall upper header riser pipes and each of the right water-cooled wall upper header riser pipes is distributed in front-back symmetry relative to the center plane of the steam drum.

[0022] Further, the aforementioned horizontal waste heat boiler, wherein a plurality of shock wave ash cleaning devices are arranged on the boiler, the shock wave ash cleaning devices are existing devices and can be directly purchased from professional manufacturers, and the shock wave ash cleaning devices have the advantages of compact structure and good ash cleaning effect.

[0023] Further, the aforementioned horizontal waste heat boiler, wherein five evaporators are arranged in sequence at the rear of the radiation chamber of the boiler. High-temperature flue gas from the zinc smelting volatile kiln flows through the radiation chamber and the five groups of evaporators in sequence, reducing the temperature of the high-temperature flue gas from 700°C to about 320°C. This arrangement can effectively improve the recovery efficiency of the flue gas, reduce the exhaust gas temperature, and thus improve the overall thermal efficiency of the horizontal waste heat boiler.

[0024] The beneficial effects of the utility model are: ① the boiler is supported by the lower header support, the steam drum is supported by the descending pipe support through the descending pipe, and the ascending pipe can also support the steam drum to some extent, so that the steel frame does not bear the weight of the horizontal waste heat boiler, and the bearing capacity of the steel frame only needs to ensure that a person can walk on the steel frame, so that the steel frame can be thin and fine, the consumption of the steel frame is reduced by 35% compared with the same type of suspended horizontal waste heat boiler, the weight of the steel frame is greatly reduced, and the cost is reduced; in addition, the land occupation of the boiler is also reduced by about 25%, so that the boiler is more compact as a whole; ② the boiler adopts a full water-cooled wall structure, which has good sealing performance and basically no flue gas leakage, and reduces the corrosion rate; a large number of evaporation heating surfaces are arranged on the full water-cooled wall, and the overall structure is more compact, so that a large number of evaporation heating surface headers and connecting pipelines can be saved; ③ each lower header support is arranged in the form of one fixed point and the rest sliding points, which effectively solves the problem of thermal expansion of the boiler; in addition, the water-cooled wall and the descending pipe are fixed as a whole through the arrangement of each connecting piece, and the water-cooled wall and the steam drum are supported together, which is beneficial to the integral expansion of the boiler and improves the stability of the water-cooled wall. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of the horizontal waste heat boiler described in the background art.

[0026] Figure 2 is a structural schematic view of the horizontal waste heat boiler described in the utility model.

[0027] Figure 3 is Figure 2 a structural schematic view in the section direction.

[0028] Figure 4 is Figure 2 a partial structural schematic view in the top direction.

[0029] Figure 5 is a connection state schematic view of each lower header support and the bottom platform distributed on the left water-cooled wall lower header and the right water-cooled wall lower header.

[0030] Figure 6 is Figure 5 a partial enlarged structural schematic view of part A.

[0031] Figure 7 isFigure 5 Part B of the local enlarged structure diagram.

[0032] Wherein:

[0033] 1, boiler; 2, steel frame; 3, suspension structure; 4, drum support; 5, drum; 6, lower header support; 7, downcomer support; 8, connecting piece; 9, ash hopper; 10, bottom platform; 11, shock cleaning device; 12, riser; 13, left water wall; 14, right water wall; 15, left water wall lower header; 16, right water wall lower header; 17, left water wall upper header; 18, right water wall upper header; 19, left downcomer; 20, right downcomer; 21, connecting pipe; 22, left water wall upper header riser; 23, right water wall upper header riser; 24, radiation chamber; 25, evaporator; 26, left downcomer connecting pipe; 27, right downcomer connecting pipe;

[0034] 100, first lower header support; 200, second lower header support; 300, third lower header support; 400, fourth lower header support; 500, fifth lower header support; 600, sixth lower header support. DETAILED DESCRIPTION

[0035] The technical scheme of the utility model is described in further detail below in combination with the drawings and preferred embodiments.

[0036] As Figure 1 shown, the horizontal waste heat boiler currently seen on the market mainly includes: boiler 1 and steel frame 2, the boiler 1 includes: water wall, lower header, upper header, drum 5, downcomer and riser 12.

[0037] The embodiment is that the original boiler 1 adopts suspension type, supported by the steel frame 1, changed to the boiler 1 adopting self-supporting type structure, the drum 5 is supported by the bottom platform 10, so that the steel frame 2 does not bear the weight of the horizontal waste heat boiler. The specific improvement is as follows.

[0038] As Figure 2 and Figure 3 shown, the horizontal waste heat boiler in the embodiment is provided with a plurality of lower header supports 6 at the bottom of the lower header; the downcomer support 7 is arranged at the bottom of the downcomer; a plurality of connecting pieces 8 are arranged between the water wall and the downcomer.

[0039] For the convenience of description, the area where the horizontal waste heat boiler is installed is uniformly referred to as a bottom platform 10, the boiler 1 is supported on the bottom platform 10 through the respective lower headers 6, and the steam drum 5 is supported on the bottom platform 10 through the downcomers, so that the steel frame 2 does not bear the weight of the horizontal waste heat boiler, and the load bearing capacity of the steel frame 2 only needs to ensure that a person can walk on the steel frame, so that the steel frame 2 can be thin and fine, and the material consumption of the steel frame is reduced by 35% compared with the upper steel frame of the same type of suspended horizontal waste heat boiler, greatly reducing the weight of the steel frame 2 and reducing the cost.

[0040] The boiler 1 adopts a full water wall structure, and the full water wall structure has the following main advantages: first, the sealing performance is good, and the flue gas basically does not leak, reducing the corrosion rate; second, a large number of evaporation heating surfaces are arranged on the full water wall, and the overall structure is more compact, which can save a large number of evaporation heating surface headers and the arrangement of connecting pipes thereof.

[0041] The water wall includes a left water wall 13 and a right water wall 14. The lower header includes a left water wall lower header 15 and a right water wall lower header 16. The upper header includes a left water wall upper header 17 and a right water wall upper header 18. The downcomer includes a left downcomer 19 and a right downcomer 20.

[0042] The left water wall lower header 15 and the right water wall lower header 16 are communicated through a plurality of connecting pipes 21, and the openings formed between each two adjacent connecting pipes 21 and the left water wall 13 and the right water wall 14 are sealingly connected with the ash hoppers 9. The left water wall lower header 15 and the left water wall upper header 17 are communicated through the left water wall 13, and the right water wall lower header 16 and the right water wall upper header 18 are communicated through the right water wall 14.

[0043] A left downcomer connecting pipe 26 is arranged on the left water wall lower header 15 and communicates with the inner cavity of the left water wall lower header 15, and a left downcomer connecting pipe is arranged on the steam drum 5, the left downcomer 19 is welded and connected with the left downcomer connecting pipe 26, and the left downcomer 19 is located on the left side of the left water wall 13.

[0044] A right downcomer connecting pipe 27 is arranged on the right water wall lower header 16 and communicates with the inner cavity of the right water wall lower header 16, and a right downcomer connecting pipe is arranged on the steam drum 5, the right downcomer 20 is welded and connected with the right downcomer connecting pipe 27, and the right downcomer 20 is located on the right side of the right water wall 14.

[0045] More preferably, the left downcomer 19 and the right downcomer 20 are both vertically arranged and perpendicular to the bottom platform 10.

[0046] The lower pipe support 7 has two, respectively in the left lower pipe 19 bottom and right lower pipe 20 bottom.

[0047] The connection 8 is distributed between the left water wall 13 and the left lower pipe 19 and between the right water wall 14 and the right lower pipe 20. The connection 8 can be a rigid beam connection structure.

[0048] The riser 12 includes a plurality of left water wall header riser 22 and a plurality of right water wall header riser 23.

[0049] A plurality of left riser connecting pipes are arranged on the left water wall header 17, and a plurality of left water wall header riser connecting pipes are arranged on the drum 5. The number of the left riser connecting pipes and the left water wall header riser connecting pipes is consistent with the number of the left water wall header riser 22. Each left water wall header riser 22 is connected to a corresponding left water wall header riser connecting pipe and a corresponding left riser connecting pipe.

[0050] A plurality of right riser connecting pipes are arranged on the right water wall header 18, and a plurality of right water wall header riser connecting pipes are arranged on the drum 5. The number of the right riser connecting pipes and the right water wall header riser connecting pipes is consistent with the number of the right water wall header riser 23. Each right water wall header riser 23 is connected to a corresponding right water wall header riser connecting pipe and a corresponding right riser connecting pipe.

[0051] More preferably, the number of the left water wall header riser 22 is equal to the number of the right water wall header riser 23, and the left water wall header riser 22 and the right water wall header riser 23 are symmetrically distributed with respect to the center plane of the drum 5. The left water wall header riser 22 and the right water wall header riser 23 provide support to the drum 5, thereby improving the overall stability of the boiler 1.

[0052] The left water wall 13, the right water wall 14, the left water wall header 17, the right water wall header 18, the left water wall lower header 15, the right water wall lower header 16, the left water wall header riser 22, the right water wall header riser 23, the left lower pipe 19, the right lower pipe 20, the left lower pipe connecting pipe 26, and the right lower pipe connecting pipe 27 form a natural circulation loop.

[0053] The lower header support 6 is distributed at the bottom of the left water wall lower header 15 and the right water wall lower header 16.

[0054] The number of the lower header supports 6 at the bottom of the left water cooling wall lower header 15 and the number of the lower header supports 6 at the bottom of the right water cooling wall lower header 16 are equal, and each of the lower header supports 6 at the bottom of the left water cooling wall lower header 15 is arranged in a uniform interval from front to back along the bottom of the left water cooling wall lower header 15, and each of the lower header supports 6 at the bottom of the right water cooling wall lower header 16 is arranged in a uniform interval from front to back along the bottom of the right water cooling wall lower header 16.

[0055] As shown in Figure 5 , Figure 6 and Figure 7 , each of the lower header supports 6 is divided as follows:

[0056] Among each of the lower header supports 6 on the left water cooling wall lower header 15, the lower header support at the middle position of the left water cooling wall lower header 15 is the first lower header support 100, the lower header support at the left side of the first lower header support 100 is the second lower header support 200, and the lower header support at the right side of the first lower header support 100 is the third lower header support 300;

[0057] Among each of the lower header supports 6 on the right water cooling wall lower header 16, the lower header support at the middle position of the right water cooling wall lower header 16 is the fourth lower header support 400, the lower header support at the left side of the fourth lower header support 400 is the fifth lower header support 500, and the lower header support at the right side of the fourth lower header support 400 is the sixth lower header support 600.

[0058] Considering the thermal expansion problem of the boiler, one of the lower header supports 6 is fixedly connected with the boiler, and the remaining lower header supports 6 are in sliding contact with the boiler and are not fixedly connected, but only serve as supports. By setting one fixed point and several sliding points, the thermal expansion problem of the boiler is effectively solved, as follows:

[0059] The first lower header support 100 at the bottom of the left water cooling wall lower header 15 is fixedly connected with the bottom platform 10, each of the second lower header supports 200 and each of the third lower header supports 300 at the bottom of the left water cooling wall lower header 15 are in movable sliding contact with the bottom platform 10, and each of the fourth lower header supports 400, each of the fifth lower header supports 500, and each of the sixth lower header supports 600 at the bottom of the right water cooling wall lower header 16 are in movable sliding contact with the bottom platform 10. As shown in Figure 5 , Figure 6 and Figure 7The first lower header support 100 is taken as a fixed point to represent the thermal expansion direction, at this time, the boiler part supported by each second lower header support 200 expands towards the front of the furnace, the boiler part supported by each third lower header support 300 expands towards the back of the furnace. The fourth lower header support 400 supports the expansion towards the right side of the boiler perpendicular to the center line of the boiler. The boiler part supported by each fifth lower header support 500 has two expansion directions: one is to expand towards the front of the furnace along the center line of the boiler, and the other is to expand towards the right side of the furnace perpendicular to the center line of the boiler. The boiler part supported by each sixth lower header support 600 has two expansion directions: one is to expand towards the back of the furnace along the center line of the boiler, and the other is to expand towards the right side of the furnace perpendicular to the center line of the boiler.

[0060] In the non-ferrous smelting production process, a large amount of high-temperature dust-containing flue gas with a temperature of 700 DEG C or above is generated, which is toxic and harmful. In order to prevent the heating area from being covered with dust, the shock cleaning device 11 is arranged on the boiler 1. The number of shock cleaning devices 11 can be set to be multiple, which are dispersed on the boiler 1. The shock cleaning device 11 belongs to an existing device, which can be directly purchased from the market. The shock cleaning device 11 has the advantages of compact structure and good dust cleaning effect.

[0061] As shown in Figure 4 The five evaporators 25 are arranged in sequence at the back of the radiation chamber 24 of the boiler 1. The tube bundles of each evaporator 25 are arranged on the left water wall 13 and the right water wall 14, so that the overall structure is compact. The high-temperature flue gas from the zinc smelting volatilization kiln flows through the radiation chamber 24 and the five groups of evaporators 25 in sequence, so that the temperature of the high-temperature flue gas is reduced from 700 DEG C to about 320 DEG C, and finally discharged into the subsequent flue gas dust removal system for purification and then discharged into the atmosphere. The waste heat boiler absorbs the heat in the flue gas to generate saturated steam, which can be connected to the enterprise pipe network for improving the production process, or used for other purposes. The above setting mode can effectively improve the recovery efficiency of the flue gas and reduce the exhaust gas temperature, thereby improving the overall thermal efficiency of the horizontal waste heat boiler.

[0062] The boiler 1 with the above structure has simple structure, convenient maintenance and good adaptability to load variation, and is suitable for non-ferrous metal smelting and other industries. Each part of the boiler 1 is connected together to form a complete modular boiler structure.

[0063] The utility model discloses beneficial effect is: ① boiler 1 is supported by lower header support 6, and the steam pocket 5 is supported by the downcomer support 7 through the downcomer, and the upcomer 12 can also play the role of supporting the steam pocket 5 to a certain extent, make steel frame 2 not bear the weight of the horizontal waste heat boiler, and the bearing capacity of steel frame 2 can only guarantee that people can walk on steel frame 2, so steel frame 2 can be thin, and the steel frame consumption material reduces 35% compared with the same type suspension horizontal waste heat boiler upper steel frame consumption material, greatly reduce the weight of steel frame 2, reduce the cost, in addition, the land occupation of boiler 1 also reduces about 25%, therefore, the whole boiler 1 is more compact, ② boiler 1 adopts full water cooling wall structure, first, the sealing performance is good, and smoke basically does not leak, and the corrosion rate is reduced, second, a large number of evaporation heating surfaces are set on the water cooling wall, and the overall structure is also more compact, can save a large amount of evaporation heating surface header and the setting of connecting pipeline, ③ single lower header support 6 is set through a fixed point, and the rest is in the form of sliding point, effectively solve the problem of boiler thermal expansion, in addition, the setting of each connecting piece 8 fixes the water cooling wall and the downcomer as a whole, and the water cooling wall and the steam pocket 5 are supported together, which is favorable for the integral expansion of the boiler, and improves the stability of the water cooling wall.

[0064] The above only is the preferred embodiment of the utility model, is not any other form's limit to the utility model, and any modification or equivalent change made according to the technical essence of the utility model still belongs to the range of the utility model claimed to be protected.

Claims

1. A horizontal waste heat boiler, comprising: Boiler and steel frame; The boiler includes: a water-cooled wall, a lower header, an upper header, a steam drum, a downcomer, and a riser; characterized in that: a plurality of lower header supports are provided at the bottom of the lower header; a downcomer support is provided at the bottom of the downcomer; and a plurality of connecting parts are provided between the water-cooled wall and the downcomer.

2. A horizontal waste heat boiler according to claim 1, characterized in that: The water-cooled wall includes a left water-cooled wall and a right water-cooled wall; the lower header includes a lower header of the left water-cooled wall and a lower header of the right water-cooled wall; the upper header includes an upper header of the left water-cooled wall and an upper header of the right water-cooled wall; the downcomer includes a left downcomer and a right downcomer. The lower header of the left water-cooled wall and the lower header of the right water-cooled wall are connected by several horizontal connecting pipes. The openings formed by the adjacent connecting pipes and the left and right water-cooled walls are sealed with ash hoppers. The lower header of the left water-cooled wall and the upper header of the left water-cooled wall are connected by the left water-cooled wall. The lower header of the right water-cooled wall and the upper header of the right water-cooled wall are connected by the right water-cooled wall. A left downcomer connecting pipe is installed on the lower header of the left water-cooled wall, and a left downcomer connecting pipe is installed on the steam drum. The left downcomer connects the left downcomer connecting pipe and the left downcomer connecting pipe, and the left downcomer is located on the left side of the left water-cooled wall. A right downcomer connecting pipe is installed on the lower header of the right water-cooled wall, and a right downcomer connecting pipe is installed on the steam drum. The right downcomer connects the right downcomer connecting pipe and the right downcomer connecting pipe, and the right downcomer is located on the right side of the right water-cooled wall. There are two downpipe supports, located at the bottom of the left downpipe and the bottom of the right downpipe, respectively. The connecting components are distributed between the left water-cooled wall and the left downcomer, and between the right water-cooled wall and the right downcomer. The riser pipe includes: a plurality of left-side water-cooled wall upper header riser pipes and a plurality of right-side water-cooled wall upper header riser pipes; Several left-side riser pipe connections are installed on the left-side water-cooled wall upper header, and several left-side water-cooled wall upper header riser pipe connections are installed on the steam drum. The number of left-side water-cooled wall upper header riser pipe connections and left-side riser pipe connections is the same as the number of left-side water-cooled wall upper header riser pipes. Each left-side water-cooled wall upper header riser pipe is connected to the corresponding left-side water-cooled wall upper header riser pipe connection and left-side riser pipe connection. Several right-side riser pipe connections are installed on the right-side water-cooled wall upper header, and several right-side water-cooled wall upper header riser pipe connections are installed on the steam drum. The number of right-side water-cooled wall upper header riser pipe connections and right-side riser pipe connections is the same as the number of right-side water-cooled wall upper header risers. Each right-side water-cooled wall upper header riser pipe is connected to the corresponding right-side water-cooled wall upper header riser pipe connection and right-side riser pipe connection. The lower header supports are located at the bottom of the lower header on the left water-cooled wall and the bottom of the lower header on the right water-cooled wall.

3. A horizontal waste heat boiler according to claim 2, characterized in that: The number of lower header supports at the bottom of the lower header of the left water-cooled wall and the number of lower header supports at the bottom of the lower header of the right water-cooled wall are equal. The lower header supports at the bottom of the lower header of the left water-cooled wall are arranged evenly from front to back along the bottom of the lower header of the left water-cooled wall, and the lower header supports at the bottom of the lower header of the right water-cooled wall are arranged evenly from front to back along the bottom of the lower header of the right water-cooled wall.

4. A horizontal waste heat boiler according to claim 3, characterized in that: Among the lower header supports on the lower header of the left water-cooled wall, the lower header support located in the middle of the lower header of the left water-cooled wall is the first lower header support, the lower header supports located in front of the first lower header support and located at the lower header of the left water-cooled wall are the second lower header supports, and the lower header supports located behind the first lower header support and located at the lower header of the left water-cooled wall are the third lower header supports. Among the lower header supports on the lower header of the right water-cooled wall, the lower header support located in the middle of the lower header of the right water-cooled wall is the fourth lower header support, the lower header supports located in front of the fourth lower header support and located at the lower header of the right water-cooled wall are the fifth lower header supports, and the lower header supports located behind the fourth lower header support and located at the lower header of the right water-cooled wall are the sixth lower header supports. The first lower header support on the lower header of the left water-cooled wall is fixedly connected to the bottom platform. The second and third lower header supports on each lower header of the left water-cooled wall are in sliding contact with the bottom platform. The fourth, fifth, and sixth lower header supports on the lower header of the right water-cooled wall are in sliding contact with the bottom of the platform.

5. A horizontal waste heat boiler according to claim 2, characterized in that: The number of header risers on the left water-cooled wall is equal to the number of header risers on the right water-cooled wall, and the header risers on the left and right water-cooled walls are symmetrically distributed with respect to the center plane of the steam drum.

6. A horizontal waste heat boiler according to claim 1, characterized in that: The boiler is equipped with several shock wave ash removal devices.

7. A horizontal waste heat boiler according to claim 1, characterized in that: Five evaporators are arranged sequentially at the rear of the radiant chamber of the boiler.

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