A high-temperature smoke box for connecting a single high-temperature flue to a waste heat steam boiler with a double flue gas inlet

Abstract

A high-temperature smoke box for connecting a single high-temperature flue to a waste heat steam boiler with dual flue gas inlets belongs to the field of petrochemical technology and includes a waste heat steam boiler with dual flue gas inlets, a lining, a furnace wall, an interface between the high-temperature smoke box and the waste heat steam boiler with dual flue gas inlets, reinforcing ribs, a high-temperature smoke box body, a smoke box heat dissipation bracket, a single high-temperature flue, and a high-temperature smoke box-flue interface. A single high-temperature flue is provided on the side wall of the high-temperature smoke box body, connected to the high-temperature smoke box body via the high-temperature smoke box-flue interface. The high-temperature smoke box body is fixed to the smoke box heat dissipation bracket via reinforcing ribs. Two independent channels extend from the top portion of the high-temperature smoke box body, connected to the waste heat steam boiler with dual flue gas inlets via the high-temperature smoke box-flue interface. The high-temperature smoke box is installed in the bottom space of the waste heat steam boiler, eliminating the need to occupy space on either side of the boiler. This saves floor space, reduces the possibility of burns to operators, and enhances the aesthetics of the installation site.

Description

Technical Field

[0001] The invention belongs to the technical field of petrochemical industry, and in particular relates to a high-temperature smoke box which connects a single high-temperature flue to a waste heat steam boiler with double flue gas inlets. Background Art

[0002] At present, all waste heat steam boilers used in China to recover the heat of high-temperature flue gas (1050℃) generated by petroleum calcined coke are equipped with burners for supplementary combustion. In order to achieve optimal heating of the waste heat steam boiler, the burner is arranged in the central position of the bottom of the furnace, and two high-temperature flue gas inlets are symmetrically arranged on both sides of the burner. The traditional connection method between the high-temperature flue and the waste heat steam boiler is to divide the high-temperature flue that transports the high-temperature flue gas generated by petroleum calcined coke into two parts using a flue tee, and then connect them to the two flue gas inlets of the waste heat steam boiler respectively. This connection method has many defects: for large-diameter high-temperature flues, the flue occupies a large area; the secondary stress at the high-temperature flue tee is large, and the thermal compensation effect of the high-temperature flue is poor, resulting in an increase in the horizontal thrust of the flue bracket and an increase in investment; the installation site is not beautiful; the high-temperature flue occupies a large space, so the probability of burns is higher and the safety is poor.

[0003] Therefore, the development of a high-temperature smoke box for connecting a double-gas inlet waste heat steam boiler and a high-temperature flue is of great significance to safe production, optimized design, reduced investment, and land saving in the petroleum and petrochemical fields. Summary of the Invention

[0004] In order to solve the problem of poor heat compensation effect of high-temperature flue, the present invention proposes: a high-temperature flue box connecting a single high-temperature flue to a waste heat steam boiler with dual flue gas inlets. The technical solution is as follows:

[0005] It includes a double flue gas inlet waste heat steam boiler, a high-temperature smoke box and a double flue gas inlet waste heat steam boiler interface, reinforcing ribs, a high-temperature smoke box body, a smoke box heat dissipation bracket, a single high-temperature flue and a high-temperature smoke box and flue interface. A single high-temperature flue is provided on the side wall of the high-temperature smoke box body, and the single high-temperature flue is connected to the high-temperature smoke box body through the high-temperature smoke box and flue interface. The high-temperature smoke box body is fixed to the smoke box heat dissipation bracket through reinforcing ribs. The top part of the high-temperature smoke box body extends out two independent channels, and the channels are connected to the double flue gas inlet waste heat steam boiler through the high-temperature smoke box and a double flue gas inlet waste heat steam boiler interface.

[0006] Furthermore, it also includes linings, which are respectively arranged on the inner walls of the double flue gas inlet waste heat steam boiler, the high-temperature smoke box body and the single high-temperature flue.

[0007] Furthermore, it also includes a furnace wall, which is fixedly arranged below the double flue gas inlet waste heat steam boiler.

[0008] Furthermore, the high-temperature smoke box body is made of steel.

[0009] Furthermore, the high-temperature smoke box and the interface of the double flue gas inlet waste heat steam boiler adopt a plug-in connection method.

[0010] Furthermore, the high-temperature smoke box and the smoke duct interface adopt a plug-in connection method.

[0011] Furthermore, the interface between the high-temperature smoke box and the double flue gas inlet waste heat steam boiler is filled with soft high-temperature resistant filler.

[0012] Furthermore, the interface between the high-temperature smoke box and the flue is filled with soft high-temperature resistant filler.

[0013] Furthermore, the flue gas is discharged from a single high-temperature flue and then discharged into the double flue gas inlet waste heat steam boiler through a high-temperature smoke box body.

[0014] Furthermore, the reinforcement ribs adopt an I-steel structure to support the high-temperature smoke box body.

[0015] Furthermore, the reinforcement ribs are made of steel.

[0016] The beneficial effects of the present invention are:

[0017] 1. The high-temperature smoke box is installed in the bottom space of the waste heat steam boiler and does not need to occupy the open space on both sides of the boiler. It saves floor space and reduces the possibility of burns to operators. It also makes the installation site more beautiful.

[0018] 2. The rational use of plug-in installation technology between the flue and the equipment offsets the secondary stress of the high-temperature flue and the high-temperature smoke box itself, and improves the safety of the equipment during operation.

[0019] 3. Use I-beams as reinforcement ribs for high-temperature smoke boxes to improve the load-bearing capacity of the smoke box body and provide better stability after additional lining.

[0020] 4. An I-beam is installed at the bottom of the high-temperature smoke box as a heat dissipation bracket, which not only meets the load requirements but also facilitates heat dissipation. The temperature at the bottom of the bracket is lower than the maximum operating temperature of the concrete foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the front view of the high temperature smoke box;

[0022] Figure 2 It is a structural diagram of the high temperature smoke box;

[0023] Wherein, the accompanying drawings are marked as follows:

[0024] 1. Waste heat steam boiler with double flue gas inlets; 2. Lining; 3. Furnace wall; 4. High-temperature resistant filler; 5. Interface between high-temperature smoke box and waste heat boiler; 6. Reinforcement ribs; 7. High-temperature smoke box body; 8. Smoke box heat dissipation bracket; 9. High-temperature flue; 10. Interface between high-temperature smoke box and flue. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0028] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0029] The structure of the present invention is described in detail below with reference to the accompanying drawings.

[0030] Example 1

[0031] The patent of this invention designs a high temperature smoke box for connecting double flue gas inlet waste heat steam boiler and single high temperature flue, such as Figure 1-2 As shown, it includes a double flue gas inlet waste heat steam boiler 1, a high-temperature smoke box and a double flue gas inlet waste heat steam boiler interface 5, a reinforcing rib 6, a high-temperature smoke box body 7, a smoke box heat dissipation bracket 8, a single high-temperature flue 9 and a high-temperature smoke box and flue interface 10. A single high-temperature flue 9 is provided on the side wall of the high-temperature smoke box body 7, and the single high-temperature flue 9 is connected to the high-temperature smoke box body 7 through the high-temperature smoke box and flue interface 10. The high-temperature smoke box body 7 is fixed to the smoke box heat dissipation bracket 8 through the reinforcing rib 6. The top part of the high-temperature smoke box body 7 extends into two independent channels, and the channels are connected to the double flue gas inlet waste heat steam boiler 1 through the high-temperature smoke box and the double flue gas inlet waste heat steam boiler interface 5.

[0032] It also includes a lining 2, which is respectively arranged on the inner walls of the double flue gas inlet waste heat steam boiler 1, the high-temperature smoke box body 7 and the single high-temperature flue 9.

[0033] It also includes a furnace wall 3, which is fixedly arranged below the double flue gas inlet waste heat steam boiler 1.

[0034] Wherein, the material of the high-temperature smoke box body 7 is steel plate.

[0035] The high-temperature smoke box and the double-flue gas inlet waste heat steam boiler interface 5 are connected in a plug-in manner.

[0036] The high-temperature smoke box and the smoke duct interface 10 are connected by plugging.

[0037] Among them, the interface 5 between the high-temperature smoke box and the double flue gas inlet waste heat steam boiler is filled with soft high-temperature resistant filler 4.

[0038] The interface 10 between the high-temperature smoke box and the flue is filled with a soft high-temperature resistant filler 4 .

[0039] The flue gas is discharged from a single high-temperature flue 9 and then discharged into the double flue gas inlet waste heat steam boiler 1 through a high-temperature flue box body 7 .

[0040] The reinforcement ribs 6 use an I-steel structure to support the high-temperature smoke box body 7 .

[0041] The present invention provides a high-temperature smoke box for connecting a double flue gas inlet waste heat steam boiler and a single high-temperature flue. The smoke box is mainly composed of a high-temperature smoke box and flue interface 10, a high-temperature smoke box body 7, a high-temperature smoke box and waste heat boiler interface 5, a lining 2, a reinforcement rib 6, a smoke box heat dissipation bracket 8, etc. The high-temperature smoke box body 7 is made of steel plate; because the temperature of high-temperature flue gas exceeds the applicable temperature of steel plate, the inner wall of the high-temperature smoke box body 7 is lined; the lining is heavy, and in order to improve the stability of the high-temperature smoke box body, the outer wall of the high-temperature smoke box body 7 is reinforced with I-beams 6; the temperature of the outer wall of the smoke box is about 150°C during operation, and it cannot be placed directly on the concrete foundation. Therefore, an I-beam is added to the bottom of the high-temperature smoke box body to serve as a smoke box heat dissipation bracket 8; in order to reduce the secondary stress of the high-temperature smoke box body 7 and the high-temperature flue, the connection between the high-temperature smoke box and the high-temperature flue interface 10, and the connection between the high-temperature smoke box and the waste heat boiler interface are all plug-in. After the steel plate at the plug-in is installed in place, a lining 2 is made, and the lining 2 must wrap the interface steel plate to avoid direct contact between the interface steel plate and the high-temperature flue gas; the gaps between the interface steel plates are filled with soft high-temperature resistant filler 4.

[0042] The high-temperature smoke box body 7 and its interface are sealing and supporting structures made of steel plates, on which the internal lining 2 is fixed; the lining 2 can be used to protect the outer steel structure of the smoke box to prevent the steel structure from softening due to heat; the reinforcing ribs 6 fixed to the outside of the high-temperature smoke box can increase the bearing capacity of the high-temperature smoke box body 7; the smoke box heat dissipation bracket 8 can prevent the surface temperature of the smoke box from being directly transmitted to the concrete foundation, thereby protecting the smoke box foundation.

[0043] Example 2

[0044] The patent of this invention designs a high temperature smoke box for connecting double flue gas inlet waste heat steam boiler and single high temperature flue, such as Figure 1-2As shown, it includes a double flue gas inlet waste heat steam boiler 1, a high-temperature smoke box and a double flue gas inlet waste heat steam boiler interface 5, a reinforcing rib 6, a high-temperature smoke box body 7, a smoke box heat dissipation bracket 8, a single high-temperature flue 9 and a high-temperature smoke box and flue interface 10. A single high-temperature flue 9 is provided on the side wall of the high-temperature smoke box body 7, and the single high-temperature flue 9 is connected to the high-temperature smoke box body 7 through the high-temperature smoke box and flue interface 10. The high-temperature smoke box body 7 is fixed to the smoke box heat dissipation bracket 8 through the reinforcing rib 6. The top part of the high-temperature smoke box body 7 extends into two independent channels, and the channels are connected to the double flue gas inlet waste heat steam boiler 1 through the high-temperature smoke box and the double flue gas inlet waste heat steam boiler interface 5.

[0045] It also includes a lining 2, which is respectively arranged on the inner walls of the double flue gas inlet waste heat steam boiler 1, the high-temperature smoke box body 7 and the single high-temperature flue 9.

[0046] It also includes a furnace wall 3, which is fixedly arranged below the double flue gas inlet waste heat steam boiler 1.

[0047] Wherein, the material of the high-temperature smoke box body 7 is steel plate.

[0048] The high-temperature smoke box and the double-flue gas inlet waste heat steam boiler interface 5 are connected in a plug-in manner.

[0049] The high-temperature smoke box and the smoke duct interface 10 are connected by plugging.

[0050] Among them, the interface 5 between the high-temperature smoke box and the double flue gas inlet waste heat steam boiler is filled with soft high-temperature resistant filler 4.

[0051] Among them, the interface 10 between the high-temperature smoke box and the flue is filled with soft high-temperature resistant filler 4.

[0052] The flue gas is discharged from a single high-temperature flue 9 and then discharged into the double flue gas inlet waste heat steam boiler 1 through a high-temperature flue box body 7 .

[0053] The reinforcement ribs 6 use an I-steel structure to support the high-temperature smoke box body 7 .

[0054] The present invention provides a high-temperature smoke box for connecting a double flue gas inlet waste heat steam boiler and a single high-temperature flue. The smoke box is mainly composed of a high-temperature smoke box and flue interface 10, a high-temperature smoke box body 7, a high-temperature smoke box and waste heat boiler interface 5, a lining 2, a reinforcement rib 6, a smoke box heat dissipation bracket 8, etc. The high-temperature smoke box body 7 is made of steel plate; because the temperature of high-temperature flue gas exceeds the applicable temperature of steel plate, the inner wall of the high-temperature smoke box body 7 is lined; the lining is heavy, and in order to improve the stability of the high-temperature smoke box body, the outer wall of the high-temperature smoke box body 7 is reinforced with I-beams 6; the temperature of the outer wall of the smoke box is about 150°C during operation, and it cannot be placed directly on the concrete foundation. Therefore, an I-beam is added to the bottom of the high-temperature smoke box body to serve as a smoke box heat dissipation bracket 8; in order to reduce the secondary stress of the high-temperature smoke box body 7 and the high-temperature flue, the connection between the high-temperature smoke box and the high-temperature flue interface 10, and the connection between the high-temperature smoke box and the waste heat boiler interface are all plug-in. After the steel plate at the plug-in is installed in place, a lining 2 is made, and the lining 2 must wrap the interface steel plate to avoid direct contact between the interface steel plate and the high-temperature flue gas; the gaps between the interface steel plates are filled with soft high-temperature resistant filler 4.

[0055] The high-temperature smoke box body 7 and its interface are sealing and supporting structures made of steel plates, on which the internal lining 2 is fixed; the lining 2 can be used to protect the outer steel structure of the smoke box to prevent the steel structure from softening due to heat; the reinforcing ribs 6 fixed to the outside of the high-temperature smoke box can increase the bearing capacity of the high-temperature smoke box body 7; the smoke box heat dissipation bracket 8 can prevent the surface temperature of the smoke box from being directly transmitted to the concrete foundation, thereby protecting the smoke box foundation.

[0056] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed in the present invention, who makes equivalent replacements or changes based on the technical solutions and concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-temperature smoke box connecting a single high-temperature flue to a waste heat steam boiler with double flue gas inlets, characterized in that: The invention comprises a waste heat steam boiler with two flue gas inlets (1), a high-temperature smoke box and a connection (5) between the waste heat steam boiler with two flue gas inlets, a reinforcing rib (6), a high-temperature smoke box body (7), a smoke box heat dissipation bracket (8), a single high-temperature flue (9) and a high-temperature smoke box and flue connection (10), wherein a single high-temperature flue (9) is provided on a side wall of the high-temperature smoke box body (7), the single high-temperature flue (9) is connected to the high-temperature smoke box body (7) through the high-temperature smoke box and flue connection (10), the high-temperature smoke box body (7) is fixed to the smoke box heat dissipation bracket (8) through the reinforcing rib (6), and the top portion of the high-temperature smoke box body (7) extends two independent channels, the channels are connected to the waste heat steam boiler with two flue gas inlets (1) through the high-temperature smoke box and the connection (5) between the waste heat steam boiler with two flue gas inlets; It also includes a furnace wall (3), wherein the furnace wall (3) is fixedly arranged below the double flue gas inlet waste heat steam boiler (1); The high-temperature smoke box and the double-gas inlet waste heat steam boiler interface (5) adopt a plug-in connection method; The high-temperature smoke box and the smoke duct interface (10) adopt a plug-in connection method; The flue gas is discharged from a single high-temperature flue (9) and then discharged into the double flue gas inlet waste heat steam boiler (1) through a high-temperature smoke box body (7).

2. The high-temperature smoke box for connecting a single high-temperature flue to a waste heat steam boiler with double flue gas inlets according to claim 1, characterized in that: It also includes a lining (2), which is respectively arranged on the inner walls of the double flue gas inlet waste heat steam boiler (1), the high-temperature smoke box body (7), and the single high-temperature flue (9).

3. The high-temperature smoke box for connecting a single high-temperature flue to a waste heat steam boiler with dual flue gas inlets according to claim 1, characterized in that: The high-temperature smoke box body (7) is made of steel.

4. The high-temperature smoke box for connecting a single high-temperature flue to a waste heat steam boiler with dual flue gas inlets according to claim 1, characterized in that: The interface (5) between the high-temperature smoke box and the double flue gas inlet waste heat steam boiler is filled with soft high-temperature resistant filler (4).

5. The high-temperature smoke box for connecting a single high-temperature flue to a waste heat steam boiler with double flue gas inlets according to claim 1, characterized in that: The interface (10) between the high-temperature smoke box and the flue is filled with soft high-temperature resistant filler (4).

6. The high-temperature smoke box for connecting a single high-temperature flue to a waste heat steam boiler with dual flue gas inlets according to claim 1, characterized in that: The reinforcement rib (6) adopts an I-steel structure to support the high-temperature smoke box body (7).

7. The high-temperature smoke box for connecting a single high-temperature flue to a waste heat steam boiler with dual flue gas inlets according to claim 1, characterized in that: The reinforcing rib (6) is made of steel.

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