Lateral air inlet fluidized bed roasting furnace

Abstract

The utility model provides a lateral air inlet fluidized bed roasting furnace, which relates to the technical field of roasting furnaces and comprises a roasting furnace boiling section cylinder, a roasting furnace expansion body cone and a roasting furnace upper section straight cylinder, an air inlet pipe is arranged on the lower portion of the left side face of the roasting furnace boiling section cylinder, and a cleaning opening is arranged on the lower portion of the right side face of the roasting furnace boiling section cylinder. A roasting furnace expansion body cone is arranged at the end part of the roasting furnace boiling section cylinder; and a roasting furnace upper section straight cylinder is arranged at the upper end of the roasting furnace expansion body cone. The whole roasting process is convenient to operate according to designed feeding and air inlet amount, long-time continuous and stable operation can be achieved, the emptying opening is formed in the top of the furnace and is mainly used when the furnace body is dried, opened and heated, meanwhile, the temperature of smoke reaches the highest when the smoke reaches the top of the roasting furnace, and the waste heat recovery coil is arranged in the space. The coil pipe is communicated with a waste heat boiler water supply system, the steam pressure and temperature can be further improved, and the steam yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of roasting furnaces, in particular to a side-inlet fluidized bed roasting furnace. Background Art

[0002] A large amount of S-rich foam waste liquid is generated during the production process of the coking plant. It is the residual liquid in the coking production process. In addition to S, it is also rich in organic waste and various salts washed from the coal coking process. This foam waste liquid cannot be treated by normal sewage treatment methods, but organic matter is combustible, so it can be treated by burning the waste liquid, and at the same time, sulfur is recovered to make sulfuric acid; the first step in making sulfur foam acid is to roast the sulfur foam. The roasting method can be to directly spray the sulfur foam liquid into the roasting furnace for roasting, or to dehydrate the sulfur foam into dry material for roasting.

[0003] In the specification of a circulating fluidized bed roasting furnace in the prior art (Announcement No. CN201074208Y), it is mentioned that "a material collection and reflow system is arranged outside the roasting furnace body, and the material collection and reflow system comprises: a reflow collector for separating gas from the airflow and collecting materials carried out of the furnace by the airflow, a reflow device and a reflow pipe for conveying the collected materials to the fluidized layer, the reflow collector is communicated with the furnace, the reflow device is arranged below the reflow collector, one end of the reflow pipe is connected to the reflow device, and the other end extends into the fluidized layer, and the end of the reflow pipe extending into the fluidized layer is inclined downward", but the waste heat generated when the roasting furnace in the prior art burns fuel cannot be recycled, resulting in a waste of heat resources, and is not economical, safe and practical. Utility Model Content

[0004] In order to overcome the defects of the prior art, a side-inlet fluidized bed roasting furnace is now provided to solve the problem that the waste heat generated when the roasting furnace burns fuel in the prior art cannot be recycled, resulting in a waste of heat resources and is not economical, safe and practical.

[0005] In order to achieve the above-mentioned purpose, a side-inlet fluidized bed roasting furnace is provided, comprising a roasting furnace boiling section cylinder, a roasting furnace expansion body cone and a roasting furnace upper straight cylinder, the bottom of the roasting furnace boiling section cylinder is provided with a furnace supporting bottom plate, and the upper left side surface of the roasting furnace boiling section cylinder is provided with a feeding port, the lower left side surface of the roasting furnace boiling section cylinder is provided with an air inlet pipe, and the lower right side surface of the roasting furnace boiling section cylinder is provided with a cleaning port, the end of the roasting furnace boiling section cylinder is provided with a roasting furnace expansion body cone, and the upper end of the roasting furnace expansion body cone is provided with the roasting furnace upper straight cylinder, the upper end of the roasting furnace upper straight cylinder is provided with a furnace top cone cover, and the roasting furnace boiling section cylinder, the roasting furnace expansion body cone, the roasting furnace upper straight cylinder and the furnace top cone cover are connected.

[0006] Furthermore, a bottom plate casting layer is provided in the middle of the upper end surface of the furnace supporting bottom plate, and the inner walls of the boiling section cylinder of the roasting furnace, the expanded cone of the roasting furnace and the upper straight cylinder of the roasting furnace are provided with furnace body insulation bricks, and the inner sides of the furnace body insulation bricks are provided with furnace body high-alumina bricks, and at the same time, a furnace top perlite insulation layer is provided on the inner side wall of the furnace top cone cover, and furnace vault special-shaped bricks are provided on the inner side of the furnace top perlite insulation layer.

[0007] Furthermore, the upper and lower parts of the front side of the boiling section cylinder of the roasting furnace are respectively provided with a first temperature and pressure measuring port and a second temperature and pressure measuring port, and an ignition hole and an accident handling port are provided in the middle part of the front side of the boiling section cylinder of the roasting furnace, the ignition hole is located above the accident handling port, and a sight glass is provided on the upper right side of the boiling section cylinder of the roasting furnace.

[0008] Furthermore, a tertiary air duct is disposed outside the expanded cone of the roasting furnace, and a tertiary air outlet is provided between the front middle of the tertiary air duct and the front side surface of the expanded cone of the roasting furnace.

[0009] Furthermore, a secondary air duct is sleeved on the lower part of the outer side surface of the upper straight cylinder body of the roasting furnace, a secondary air port is arranged between the front middle of the secondary air duct and the front side surface of the upper straight cylinder body of the roasting furnace, a smoke outlet is arranged on the upper part of the right side surface of the upper straight cylinder body of the roasting furnace, and a third temperature and pressure measuring port is arranged in the middle part of the front side surface of the upper straight cylinder body of the roasting furnace.

[0010] Furthermore, a steam heating coil is installed in the upper part of the upper straight cylinder of the roasting furnace, and the lower end of the steam heating coil is connected to a steam inlet, the upper end of the steam heating coil is connected to a steam outlet, and the steam inlet and the steam outlet both extend out of the upper straight cylinder of the roasting furnace.

[0011] The beneficial effects of the utility model are:

[0012] 1. In the utility model, the top is built with high-aluminum vault bricks in a circular shape, one circle is pressed on another circle until an empty opening is left in the center. The high-aluminum bricks on the top are cast into blocks with pearl mixed cement for insulation, and a diatomaceous earth casting layer is set at the bottom to keep warm while meeting the process requirements of boiling combustion of materials.

[0013] 2. In the utility model, when the furnace body is heated to a certain temperature, the material and combustion air are continuously introduced in a set amount to fully burn. After the combustion, the material is basically completely burned without residue. As the temperature rises, the combustion air enters and flows to the upper part of the furnace body; even if there is a small amount of inorganic salt, it will flow upward with the air flow in the form of gas or tiny dust.

[0014] 3. The utility model sets secondary and tertiary air ducts in the middle of the furnace body and above and below the expanded cone section to supplement the oxygen required for roasting and make the combustion more lasting.

[0015] 4. The utility model installs a steam heating coil in the upper part of the upper straight cylinder of the roasting furnace, utilizes the coil to recover waste heat, and the coil is connected with the waste heat boiler water supply system, which can further increase the steam pressure and temperature, increase the steam output, and is more economical and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is a top view schematic diagram of an embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0019] In the figure: 1. furnace supporting bottom plate; 2. bottom plate pouring layer; 3. boiling section cylinder of roasting furnace; 30. feeding port; 31. sight glass; 32. air inlet pipe; 33. cleaning port; 34. ignition hole; 35. accident handling port; 36. first temperature and pressure measuring port; 37. second temperature and pressure measuring port; 4. roasting furnace expansion cone; 40. tertiary air duct; 41. tertiary air outlet; 5. upper straight cylinder of roasting furnace; 50. flue gas outlet; 51. secondary air duct; 52. secondary air outlet; 53. third temperature and pressure measuring port; 6. furnace top cone cover; 7. perlite insulation layer of furnace top; 8. special-shaped bricks of furnace arch; 9. steam heating coil; 90. steam outlet; 91. steam inlet; 10. furnace body insulation bricks; 11. furnace body high-alumina bricks. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is further described in detail in combination with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0021] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0022] Figure 1 It is a front view schematic diagram of an embodiment of the utility model, Figure 2 A schematic top view of an embodiment of the utility model and Figure 3 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0023] Reference Figures 1 to 3 As shown, the utility model provides a side-inlet fluidized bed roasting furnace, including a roasting furnace boiling section cylinder 3, a roasting furnace expansion cone 4 and a third temperature and pressure measuring port 53, at the bottom of which a furnace supporting bottom plate 1 is arranged, and the upper left side surface of the roasting furnace boiling section cylinder 3 is provided with 303, the lower left side surface is provided with an air inlet pipe 32, and the lower right side surface of the roasting furnace boiling section cylinder 3 is provided with 333 at the end thereof, and the upper end of the roasting furnace expansion cone 4 is provided with 55, and the upper end of the roasting furnace expansion cone 4 is provided with a furnace top cone cover 6, and the roasting furnace boiling section cylinder 3, the roasting furnace expansion cone 4, the roasting furnace upper straight cylinder 5 and the furnace top cone cover 6 are connected.

[0024] In this embodiment, a bottom plate casting layer 2 is arranged in the middle of the upper end surface of the furnace supporting bottom plate 1, and the inner walls of the boiling section cylinder 3 of the roasting furnace, the expanded cone 4 of the roasting furnace and the upper straight cylinder 5 of the roasting furnace are provided with furnace body insulation bricks 10, and the inner side of the furnace body insulation bricks 10 is provided with furnace body high-alumina bricks 11, and at the same time, a furnace top perlite insulation layer 7 is arranged on the inner side wall of the furnace top cone cover 6, and a furnace vault special-shaped brick 8 is arranged on the inner side of the furnace top perlite insulation layer 7.

[0025] As a preferred implementation mode, the top of the utility model is built in a circular shape with high-aluminum vault bricks, one circle pressed on another until an empty opening is left in the center. The high-aluminum bricks on the top are cast into blocks with pearl mixed cement for insulation, and a diatomaceous earth casting layer is set at the bottom to keep warm while meeting the process requirements of boiling combustion of materials.

[0026] In this embodiment, the upper and lower parts of the front side of the boiling section cylinder 3 of the roasting furnace are respectively provided with a first temperature and pressure measuring port 36 and a second temperature and pressure measuring port 37, and an ignition hole 34 and an accident handling port 35 are provided in the middle part of the front side of the boiling section cylinder 3 of the roasting furnace, the ignition hole 34 is located above the accident handling port 35, and a sight glass 31 is provided on the upper right side of the boiling section cylinder 3 of the roasting furnace.

[0027] As a preferred embodiment, when the furnace body is heated to a certain temperature, the material and combustion air are continuously introduced in a set amount to fully burn. After the combustion, the material is basically completely burned without residue. As the temperature rises, the combustion air enters and flows to the upper part of the furnace body; even if there is a small amount of inorganic salt, it will flow upward with the air flow in the form of gas or tiny dust.

[0028] In this embodiment, a tertiary air duct 40 is arranged outside the expanded cone 4 of the roasting furnace, and a tertiary air port 41 is arranged between the front middle of the tertiary air duct 40 and the front side of the expanded cone 4 of the roasting furnace; a secondary air duct 51 is arranged on the lower part of the outer side surface of the upper straight cylinder 5 of the roasting furnace, and a secondary air port 52 is arranged between the front middle of the secondary air duct 51 and the front side surface of the upper straight cylinder 5 of the roasting furnace, and a smoke outlet 50 is arranged on the upper right side surface of the upper straight cylinder 5 of the roasting furnace, and a third temperature and pressure measuring port 53 is arranged in the middle of the front side surface of the upper straight cylinder 5 of the roasting furnace.

[0029] As a preferred implementation mode, the utility model sets secondary and tertiary air ducts in the middle of the furnace body and above and below the expanded cone section to supplement the oxygen required for roasting and make the combustion more lasting.

[0030] In this embodiment, a steam heating coil 9 is installed in the upper part of the upper straight cylinder 5 of the roasting furnace, and the lower end of the steam heating coil 9 is connected to a steam inlet 91, and the upper end of the steam heating coil 9 is connected to a steam outlet 90, and the steam inlet 91 and the steam outlet 90 both extend out of the upper straight cylinder 5 of the roasting furnace.

[0031] As a preferred embodiment, the utility model installs a steam heating coil 9 in the upper part of the straight cylinder 5 of the roasting furnace, and utilizes the coil to recover waste heat. The coil is connected with the waste heat boiler water supply system, which can further increase the steam pressure and temperature, increase the steam output, and is more economical and practical.

[0032] The utility model can effectively solve the problem that the waste heat generated by the combustion of fuel in the roasting furnace in the prior art cannot be recycled and utilized, resulting in a waste of heat resources and being uneconomical, safe and practical. The entire roasting process of the utility model is convenient to operate according to the designed feeding and air intake volume, and can be carried out continuously and stably for a long time. In addition, a vent is provided on the top of the furnace, which is mainly used when the furnace body is dried and the furnace is opened for heating. At the same time, when the flue gas reaches the top of the roasting furnace, the temperature reaches the highest. A waste heat recovery coil is arranged in this space, and the coil is connected with the waste heat boiler water supply system, which can further increase the steam pressure and temperature and increase the steam production.

[0033] The above embodiments are used to explain the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the protection scope of the present invention.

Claims

1. A side-inlet fluidized bed roasting furnace, characterized in that: The invention comprises a roasting furnace boiling section cylinder (3), a roasting furnace expansion cone (4) and a roasting furnace upper straight cylinder (5), wherein the bottom of the roasting furnace boiling section cylinder (3) is provided with a furnace support bottom plate (1), and the upper left side surface of the roasting furnace boiling section cylinder (3) is provided with a feed inlet (30), the lower left side surface of the roasting furnace boiling section cylinder (3) is provided with an air inlet pipe (32), and the lower right side surface of the roasting furnace boiling section cylinder (3) is provided with a A cleaning port (33), the end of the roasting furnace boiling section cylinder (3) is provided with a roasting furnace expansion cone (4), and the upper end of the roasting furnace expansion cone (4) is provided with a roasting furnace upper straight cylinder (5), and the upper end of the roasting furnace upper straight cylinder (5) is provided with a furnace top cone cover (6), and the roasting furnace boiling section cylinder (3), the roasting furnace expansion cone (4), the roasting furnace upper straight cylinder (5) and the furnace top cone cover (6) are connected.

2. The side-inlet fluidized bed roasting furnace according to claim 1, characterized in that: A bottom plate casting layer (2) is provided at the middle of the upper end surface of the furnace supporting bottom plate (1), and the inner side walls of the boiling section cylinder (3) of the roasting furnace, the expanded cone (4) of the roasting furnace and the upper straight cylinder (5) of the roasting furnace are provided with furnace body insulation bricks (10), and the inner side of the furnace body insulation bricks (10) are provided with furnace body high-alumina bricks (11), and the inner side of the furnace top cone cover (6) is provided with a furnace top perlite insulation layer (7), and the inner side of the furnace top perlite insulation layer (7) is provided with furnace arch special-shaped bricks (8).

3. The side-inlet fluidized bed roasting furnace according to claim 1, characterized in that: The upper and lower parts of the front side of the boiling section cylinder (3) of the roasting furnace are respectively provided with a first temperature and pressure measuring port (36) and a second temperature and pressure measuring port (37), and an ignition hole (34) and an accident handling port (35) are provided in the middle of the front side of the boiling section cylinder (3) of the roasting furnace, the ignition hole (34) is located above the accident handling port (35), and a sight glass (31) is provided on the upper right side of the boiling section cylinder (3) of the roasting furnace.

4. The side-inlet fluidized bed roasting furnace according to claim 1, characterized in that: The roasting furnace expansion cone (4) is provided with a tertiary air duct (40) on its outer surface, and a tertiary air port (41) is provided between the front middle of the tertiary air duct (40) and the front side surface of the roasting furnace expansion cone (4).

5. The side-inlet fluidized bed roasting furnace according to claim 1, characterized in that: A secondary air duct (51) is sleeved on the lower part of the outer side surface of the upper straight cylinder (5) of the roasting furnace, a secondary air port (52) is arranged between the front middle of the secondary air duct (51) and the front side surface of the upper straight cylinder (5) of the roasting furnace, a smoke outlet (50) is arranged on the upper part of the right side surface of the upper straight cylinder (5) of the roasting furnace, and a third temperature and pressure measuring port (53) is arranged in the middle part of the front side surface of the upper straight cylinder (5) of the roasting furnace.

6. The side-inlet fluidized bed roasting furnace according to claim 1, characterized in that: A steam heating coil (9) is installed in the upper portion of the upper straight cylinder (5) of the roasting furnace, and the lower end of the steam heating coil (9) is connected to a steam inlet (91), and the upper end of the steam heating coil (9) is connected to a steam outlet (90), and both the steam inlet (91) and the steam outlet (90) extend out of the upper straight cylinder (5) of the roasting furnace.

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