Smoke chamber

Abstract

The utility model relates to the technical field of flue gas treatment, and provides a smoke chamber which comprises a heat conduction shell and a plurality of heat exchange coil pipes. The heat conduction shell is provided with a flue gas inlet, a flue gas outlet and a snake-shaped flow channel formed between the flue gas inlet and the flue gas outlet, and flue gas is introduced into the snake-shaped flow channel; the multiple heat exchange coil pipes are sequentially arranged in the snakelike flow channel in the flowing direction of flue gas in the snakelike flow channel, and a first fluid medium is introduced into the heat exchange coil pipes; an interlayer structure is arranged in the shell wall of the heat conduction shell, a fluid inlet and a fluid outlet which are communicated with the interlayer structure are configured, and a second fluid medium is introduced into the interlayer structure. According to the smoke chamber disclosed by the utility model, the first fluid medium in the heat exchange coil and the second fluid medium in the interlayer structure can be respectively heated by utilizing heat energy of smoke, so that the recovery efficiency of smoke waste heat is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, and in particular to a smoke chamber. Background Technology

[0002] The calcination of mineral raw materials such as gypsum and lime generates a large amount of dust-laden flue gas. This flue gas is relatively hot and is typically discharged through a smoke chamber, with waste heat to be recovered and utilized. However, in practical applications, it has been found that existing smoke chamber designs are inefficient in recovering waste heat from the flue gas, resulting in the ineffective utilization of this thermal energy. Utility Model Content

[0003] This invention provides a smoke chamber to at least solve or improve the problem of low efficiency in recovering waste heat from flue gas in existing smoke chambers.

[0004] This utility model provides a smoke chamber, including: a heat-conducting shell and multiple heat exchange coils;

[0005] The heat-conducting housing has a flue gas inlet, a flue gas outlet, and a serpentine flow channel formed between the flue gas inlet and the flue gas outlet, wherein the serpentine flow channel is used to introduce flue gas;

[0006] Along the flow direction of the flue gas in the serpentine channel, a plurality of heat exchange coils are sequentially arranged in the serpentine channel, and the heat exchange coils are used to introduce a first fluid medium.

[0007] The heat-conducting shell has a sandwich structure inside its shell wall and is equipped with a fluid inlet and a fluid outlet communicating with the sandwich structure. The sandwich structure is used to introduce a second fluid medium.

[0008] According to the present invention, a smoke chamber is provided, wherein the heat-conducting shell includes a main shell and multiple ash discharge hoppers;

[0009] The flue gas inlet and the flue gas outlet are respectively located on the shell wall of the main housing. The main housing is provided with multiple partitions, which are spaced apart from each other to define the serpentine flow channel within the main housing. Multiple ash discharge hoppers are respectively located on the lower side of the main housing and communicate with the serpentine flow channel.

[0010] According to the present invention, a smoke chamber is provided in which the flue gas inlet and the flue gas outlet are arranged opposite to each other along the length direction of the main shell, and a plurality of ash discharge hoppers are arranged side by side along the length direction of the main shell;

[0011] The multiple partitions are arranged sequentially along the length of the main shell, and each partition is positioned at a position corresponding to the connection between two adjacent ash discharge hoppers;

[0012] In this configuration, one of the two adjacent partitions is connected to the connecting portion and is spaced apart from the top wall of the main housing, while the other of the two adjacent partitions is connected to the top wall of the main housing and is spaced apart from the connecting portion.

[0013] According to the present invention, a smoke chamber is provided in which a first cavity is formed in the shell wall of the main shell and a second cavity is formed in the shell wall of the ash discharge hopper. The first cavity and the second cavity are connected to form the sandwich structure.

[0014] The fluid inlet is connected to the second cavity, and the fluid outlet is connected to the first cavity.

[0015] According to the present invention, a smoke chamber is provided, wherein a third cavity is formed within the partition, and the third cavity is connected to at least one of the first cavity and the second cavity.

[0016] According to the present invention, a smoke chamber is provided in which multiple heat exchange coils are arranged one-to-one on the upper side of multiple ash discharge hoppers.

[0017] According to the present invention, a smoke chamber is provided, wherein the heat exchange coil includes multiple coil units, and the multiple coil units are connected in series.

[0018] According to the present invention, a smoke chamber is provided in which the coil unit is coiled into a cylindrical shape to form a channel for the flow of flue gas on the inner side of the coil unit.

[0019] According to the present invention, in a smoke chamber, the opening area of ​​the smoke inlet is larger than the opening area of ​​the smoke outlet.

[0020] The smoke chamber provided by this utility model, through the configuration of the heat-conducting shell structure, can guide the flue gas to flow along a serpentine channel. During the flow of the flue gas along the serpentine channel, the flue gas flows through each heat exchange coil in sequence, increasing the heat exchange time of the flue gas. It can effectively utilize the heat energy of the flue gas to heat the first fluid medium in each heat exchange coil. A portion of the heat from the flue gas is also transferred to the shell wall of the heat-conducting shell and exchanges heat with the second fluid medium in the sandwich structure, thereby heating the second fluid medium. This design effectively improves the efficiency of recovering waste heat from the flue gas. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is one of the structural schematic diagrams of the smoke chamber provided by this utility model.

[0023] Figure 2 This is the second structural schematic diagram of the smoke chamber provided by this utility model.

[0024] Figure 3 This is the third structural schematic diagram of the smoke chamber provided by this utility model.

[0025] Figure 4 This is a schematic diagram of the heat exchange coil provided by this utility model.

[0026] Figure label:

[0027] 1. Heat-conducting shell; 101. Flue gas inlet; 102. Flue gas outlet; 103. Serpentine flow channel; 11. Main shell; 12. Ash discharge hopper; 110. Baffle; 100. Sandwich structure; 1001. First cavity; 1002. Second cavity; 2. Heat exchange coil; 21. Coil unit; 201. Channel. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] The following is combined with Figures 1-4 The smoke chamber provided by the utility model embodiment will be described in detail through specific embodiments and application scenarios.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model embodiment provides a smoke chamber, including: a heat-conducting shell 1 and a plurality of heat exchange coils 2;

[0031] The heat-conducting housing 1 has a flue gas inlet 101, a flue gas outlet 102, and a serpentine flow channel 103 formed between the flue gas inlet 101 and the flue gas outlet 102, the serpentine flow channel 103 being used to introduce flue gas.

[0032] Along the flow direction of flue gas in the serpentine channel 103, multiple heat exchange coils 2 are sequentially arranged in the serpentine channel 103, and the heat exchange coils 2 are used to introduce the first fluid medium.

[0033] The heat-conducting housing 1 has a sandwich structure 100 inside its shell wall, and is equipped with a fluid inlet and a fluid outlet communicating with the sandwich structure 100. The sandwich structure 100 is used to introduce a second fluid medium.

[0034] It is understood that the heat-conducting housing 1 can be a metal housing, for example, the heat-conducting housing 1 is made of iron or stainless steel.

[0035] The flue gas inlet 101 of the heat-conducting shell 1 can be configured to be rotatably connected to the rotary kiln to receive flue gas from the rotary kiln. After entering the serpentine flow channel 103 from the flue gas inlet 101, the flue gas flows sequentially through each heat exchange coil 2 along the extension direction of the serpentine flow channel 103, and exchanges heat with the first fluid medium in the heat exchange coil 2 to heat the first fluid medium. After heat exchange, the flue gas is discharged from the flue gas outlet 102. The serpentine flow channel 103 can be considered as a flow channel that repeatedly bends relative to a certain reference line. Figure 3 Arrows are used to indicate the direction of flue gas flow along the serpentine channel 103.

[0036] At the same time, since the heat-conducting shell 1 has good thermal conductivity, the flue gas can also exchange heat with the second fluid medium in the sandwich structure 100 through the heat-conducting shell 1, thereby heating the second fluid medium.

[0037] The first fluid medium and the second fluid medium can be the same or different. For example, both the first fluid medium and the second fluid medium can be heat transfer oil, or the first fluid medium can be heat transfer oil and water, or the first fluid medium can be water and the second fluid medium can be heat transfer oil.

[0038] As can be seen from the above, the smoke chamber shown in this utility model, by configuring the structure of the heat-conducting shell 1, can guide the flue gas to flow along the serpentine flow channel 103. During the flow of the flue gas along the serpentine flow channel 103, the flue gas flows through each heat exchange coil 2 in sequence, which increases the heat exchange time of the flue gas. It can effectively utilize the heat energy of the flue gas to heat the first fluid medium in each heat exchange coil 2. A portion of the heat of the flue gas is also transferred to the shell wall of the heat-conducting shell 1 and exchanges heat with the second fluid medium in the sandwich structure 100 to achieve the heating of the second fluid medium. This design effectively improves the efficiency of recovering waste heat from the flue gas.

[0039] In some embodiments, such as Figure 2 and Figure 3 As shown, the heat-conducting housing 1 includes a main housing 11 and a plurality of ash discharge hoppers 12; the flue gas inlet 101 and the flue gas outlet 102 are respectively disposed on the shell wall of the main housing 11, and a plurality of baffles 110 are provided inside the main housing 11, the plurality of baffles 110 being spaced apart from each other to define a serpentine flow channel 103 inside the main housing 11; the plurality of ash discharge hoppers 12 are respectively disposed on the lower side of the main housing 11 and communicate with the serpentine flow channel 103.

[0040] It is understandable that multiple partitions 110 are spaced apart from each other to create multiple compartments within the main housing 11. However, since any two adjacent partitions 110 are staggered along a set direction, adjacent compartments are connected to each other, thereby connecting multiple compartments in sequence to form a serpentine flow channel 103.

[0041] The upper end of the ash discharge hopper 12 is connected to the bottom end of the main housing 11, and the lower end of the ash discharge hopper 12 is provided with a discharge outlet. The ash discharge hopper 12 is used to collect dust or particulate matter falling from the serpentine flow channel 103 and discharge the collected dust or particulate matter from the discharge outlet. The discharge outlet can be equipped with a switch valve, which controls the discharge of dust or particulate matter collected by the ash discharge hopper 12.

[0042] In some embodiments, such as Figure 3 As shown, the flue gas inlet 101 and the flue gas outlet 102 are arranged opposite each other along the length of the main shell 11, and multiple ash discharge hoppers 12 are arranged side by side along the length of the main shell 11; multiple baffles 110 are arranged sequentially along the length of the main shell 11, and each baffle 110 is located at a position corresponding to the connection between two adjacent ash discharge hoppers 12.

[0043] Among them, one of the two adjacent partitions 110 is connected to the connecting part and is spaced apart from the top wall of the main housing 11, and the other of the two adjacent partitions 110 is connected to the top wall of the main housing 11 and is spaced apart from the connecting part.

[0044] It is understandable that, since multiple partitions 110 are spaced apart from each other and multiple compartments are separated in the main shell 11, the multiple compartments are arranged one-to-one with the multiple ash discharge hoppers 12 and are interconnected. Each compartment can be equipped with a heat exchange coil 2, so that the multiple heat exchange coils 2 are arranged one-to-one on the upper side of the multiple ash discharge hoppers 12.

[0045] Thus, when the flue gas flows sequentially through each heat exchange coil 2 along the extension direction of the serpentine flow channel 103, the flue gas will directly wash onto the surface of each heat exchange coil 2. This design not only ensures the heat exchange effect between the flue gas and the first fluid medium in the heat exchange coil 2, but also reduces the adhesion of dust on the surface of the heat exchange coil 2, making it easier to collect the dust or particulate matter falling from the corresponding heat exchange coil 2 using the ash discharge hopper 12. This plays a certain role in dust removal for the flue gas.

[0046] In some embodiments, such as Figure 3As shown, a first cavity 1001 is formed inside the shell wall of the main shell 11, and a second cavity 1002 is formed inside the shell wall of the ash discharge hopper 12. The first cavity 1001 and the second cavity 1002 are connected to form a sandwich structure 100. The fluid inlet is connected to the second cavity 1002, and the fluid outlet is connected to the first cavity 1001.

[0047] Specifically, the main shell 11 and each ash discharge hopper 12 are provided with corresponding communication ports to realize the communication between the first cavity 1001 and the second cavity 1002.

[0048] Meanwhile, the fluid inlet can be located near the bottom of the ash hopper 12, and the fluid outlet can be located near the top of the main housing 11. Both the fluid inlet and outlet can be configured with flange interfaces for connection to other equipment.

[0049] In some embodiments, such as Figure 3 As shown, a third cavity is formed within the partition 110, and the third cavity is connected to at least one of the first cavity 1001 and the second cavity 1002.

[0050] It is understandable that since the baffle 110 is set in the serpentine flow channel 103, the flue gas will directly act on the surface of the baffle 110 during the flow process, resulting in the baffle 110 having a high temperature. This allows the third cavity corresponding to the baffle 110 to be connected to the sandwich structure 100. This design increases the volume of the second fluid medium and can effectively utilize the heat energy of the flue gas to heat the second fluid medium.

[0051] In some embodiments, such as Figure 2 and Figure 4 As shown, in order to increase the heat exchange area of ​​the heat exchange coil 2 and extend the heat exchange time of the second fluid medium, the heat exchange coil 2 is equipped with multiple coil units 21, which are connected in series.

[0052] For example, multiple coil units 21 are arranged sequentially from top to bottom at intervals, and adjacent coil units 21 are connected to each other to realize that multiple coil units 21 are connected in series.

[0053] The heat exchange coil 2 has an inlet connector at one end and an outlet connector at the other end. Both the inlet and outlet connectors are located outside the heat-conducting shell 1. Both the inlet and outlet connectors can be flange interfaces to allow for connection with other equipment via the flange interface.

[0054] In some embodiments, such as Figure 4As shown, in order to reduce the impact of the heat exchange coil 2 on the flow of flue gas in the serpentine channel 103, the coil unit 21 is coiled into a cylindrical shape to form a channel 201 for flue gas to flow inside the coil unit 21.

[0055] In some embodiments, such as Figure 2 As shown, the opening area of ​​the flue gas inlet 101 is larger than the opening area of ​​the flue gas outlet 102. This design can ensure that a large flow of flue gas enters the serpentine channel 103 from the flue gas inlet 101, reducing the influence of the heat exchange coil 2 on the flow resistance of the flue gas, thereby ensuring the flow rate and velocity of the flue gas in the serpentine channel 103.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A smoke chamber characterized by, The application relates to a heat exchange device. The heat exchange device comprises: a heat-conducting shell and a plurality of heat exchange coils; the heat-conducting shell is provided with a flue gas inlet, a flue gas outlet and a serpentine flow channel formed between the flue gas inlet and the flue gas outlet, and the serpentine flow channel is used for passing flue gas; a plurality of the heat exchange coils are arranged in the serpentine flow channel in sequence along the flow direction of the flue gas, and the heat exchange coils are used for passing a first fluid medium; 2. The smoke chamber of claim 1, wherein, the shell wall of the heat-conducting shell is provided with a sandwich structure, and is provided with a fluid inlet and a fluid outlet which are communicated with the sandwich structure, and the sandwich structure is used for passing a second fluid medium. The heat-conducting shell comprises a main shell and a plurality of ash hoppers.

3. The smoke chamber of claim 2, wherein, The flue gas inlet and the flue gas outlet are arranged on the shell wall of the main shell, and the main shell is provided with a plurality of partitions which are spaced from each other to define the serpentine flow channel in the main shell; and the ash hoppers are arranged on the lower side of the main shell and are communicated with the serpentine flow channel. The flue gas inlet and the flue gas outlet are arranged opposite to each other along the length direction of the main shell, and the ash hoppers are arranged side by side along the length direction of the main shell. The partitions are arranged in sequence along the length direction of the main shell, and each partition is arranged at a position corresponding to the connecting part between two adjacent ash hoppers.

4. The smoke chamber of claim 2, wherein, One of the two adjacent partitions is connected with the connecting part and is spaced from the top wall of the main shell, and the other of the two adjacent partitions is connected with the top wall of the main shell and is spaced from the connecting part. The shell wall of the main shell is formed with a first cavity, the shell wall of the ash hopper is formed with a second cavity, and the first cavity and the second cavity are communicated to form the sandwich structure.

5. The smoke chamber of claim 4, wherein, The fluid inlet is communicated with the second cavity, and the fluid outlet is communicated with the first cavity.

6. The smoke chamber of claim 2, wherein, The partition is formed with a third cavity which is communicated with at least one of the first cavity and the second cavity.

7. The smoke chamber of claim 1, wherein, The heat exchange coils are arranged one by one on the upper side of the ash hoppers.

8. The smoke chamber of claim 7, wherein, The heat exchange coil comprises a plurality of coil units which are connected in sequence.

9. The smoke chamber according to any one of claims 1 to 8, characterized in that The coil unit is coiled in a cylindrical shape to form a passage for the flue gas on the inner side of the coil unit. The opening area of the flue gas inlet is larger than that of the flue gas outlet.

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