Oxidant nozzle of slag gasifier

Abstract

The utility model relates to an oxidizing agent nozzle of a slag gasification furnace. The oxidizing agent nozzle consists of a special-shaped refractory brick, a refractory castable, a ceramic fiber felt, a ceramic fiber rope, a temperature measuring sleeve, a protective sleeve, an oxidizing agent pipe, a separation ring and a refractory sealing castable, the protective sleeve is connected with a blast nozzle of the gasification furnace, the temperature measuring sleeve is connected with the protective sleeve, a ceramic fiber felt is arranged in a gap in a connecting pipe of the blast nozzle of the gasification furnace, a ceramic fiber rope and a separation ring are arranged on the connecting pipe of the protective sleeve, a refractory sealing castable is poured in a cavity formed by the separation ring, and a refractory castable is poured between a special-shaped refractory brick and an inner jacket of the gasification furnace; the oxidant pipe is connected with the protective sleeve; a nozzle and a connecting pipe of the oxidant pipe are provided with ceramic fiber ropes; and a protective gas hole connecting system protective gas is arranged between the protective sleeve and the oxidant pipe. According to the utility model, the oxidant pipe is prevented from being contacted with high-temperature slag, so that the burning loss risk is reduced, the service life is prolonged, the oxidant pipe can be replaced without blowing out the furnace, no cooling design is adopted, the heat loss is avoided, and the gasification efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of slag gasifier oxidant nozzles. BACKGROUND

[0002] Traditional slag gasifier oxidant nozzle is water-cooled, nozzle head is contacted with high-temperature slag during work, and it is easy to burn after running for a period of time, and new nozzle must be replaced to carry out after shutdown overhaul, overhaul cycle is long, and overhaul cost is also high, and cooling water takes away a lot of heat, reduces slag gasifier oxidation reaction efficiency. Can slag gasifier oxidant nozzle be long in running cycle, not overhaul gasifier after burning, and not take away heat during work? SUMMARY

[0003] The utility model provides a kind of slag gasifier oxidant nozzle for the above problems, oxidant pipe avoids direct contact with gasifier high-temperature slag, prolongs running cycle, and oxidant pipe can be replaced without shutdown overhaul, and it is not cooled design, avoids taking away heat during work, improves gasifier oxidation reaction efficiency.

[0004] The slag gasifier oxidant nozzle provided by the utility model is composed of special-shaped refractory brick, refractory castable, ceramic fiber felt, temperature measuring sleeve, protective sleeve, oxidant pipe, ceramic fiber rope, separation ring and refractory sealing castable. The special-shaped refractory brick has pouring holes, exhaust holes, protective sleeve holes and temperature measuring sleeve holes; the temperature measuring sleeve is composed of a cap, a connecting pipe and a joint, the cap is welded to the connecting pipe, the connecting pipe is welded to the joint, the joint has external threads at both ends; the protective sleeve has a connecting pipe and a flange, the connecting pipe is welded to the flange, the flange has a protective gas hole in the radial direction that communicates with the connecting pipe, one end of the protective gas hole has a threaded hole connected to the system protective gas, the protective gas hole communicates with the system protective gas through the threaded hole, the flange end face has a threaded hole connected to the joint of the temperature measuring sleeve and a threaded hole connected to the short section of the oxidant pipe; the oxidant pipe has a nozzle, a connecting pipe and a short section, the nozzle is welded to the connecting pipe, the connecting pipe is welded to the short section, the short section has flanges at both ends, and the through hole in the nozzle communicates with the through hole in the short section through the connecting pipe; the separation ring has a spacer ring and a distance rod, the spacer ring has a small hole, and the distance rod is assembled to the spacer ring through the small hole at both ends.

[0005] The utility model discloses a slag gasification furnace oxidant nozzle, when assembling, first install the special-shaped refractory brick and the refractory brick below preliminarily, and adjust and determine the center position of special-shaped refractory brick and gasification furnace blast inlet connector, then unload the special-shaped refractory brick and the refractory brick below it. The connector of protection sleeve is placed on the outer cylindrical surface of one end of special-shaped refractory brick and winds ceramic fiber rope, installs the partition ring between ceramic fiber rope, and the flange of protection sleeve is connected fastening with the blast inlet connector of gasification furnace through bolt, and is sealed by winding pad, and the joint of temperature measuring sleeve is connected with the flange of protection sleeve through screw thread, and is sealed by red copper pad, and the clearance between the connector of temperature measuring sleeve, the connector of protection sleeve and the blast inlet connector of gasification furnace is filled with ceramic fiber felt closely to be flush with the jacket in gasification furnace, and the channel formed between the inner cylindrical surface of the connector of protection sleeve and the nozzle of oxidant pipe, the outer cylindrical surface of connector is communicated with the protection gas hole on the flange of protection sleeve, then install the special-shaped refractory brick and the refractory brick below it formally, the upper part refractory brick, and the cavity formed by the partition ring installed on the connector of protection sleeve is communicated with the pouring hole and exhaust hole on special-shaped refractory brick, and the whole channel communicated with the pouring hole and exhaust hole on special-shaped refractory brick by the cavity formed by the partition ring is poured with refractory sealing castable, and the refractory sealing castable is poured from the pouring hole on special-shaped refractory brick, until the exhaust hole on special-shaped refractory brick is filled with refractory sealing castable, to complete the heat insulation and sealing of protection sleeve and special-shaped refractory brick, the jacket of high temperature area of gasification furnace, and the refractory castable is poured between special-shaped refractory brick and jacket in gasification furnace, and ceramic fiber rope is wound on the nozzle and the outer cylindrical surface of connector of oxidant pipe, and the short section of oxidant pipe is connected fastening with the flange of protection sleeve through bolt, and is sealed by winding pad.

[0006] Before the operation of slag gasification furnace oxidant nozzle, the protection gas hole on the flange of protection sleeve is introduced protection gas, and the positive pressure airflow is formed between the inner cylindrical surface of the connector of protection sleeve and the nozzle and the outer cylindrical surface of connector of oxidant pipe, to prevent the burning loss of the connector of protection sleeve, the nozzle and the connector of oxidant pipe to high temperature gas in gasification furnace.

[0007] The utility model discloses a slag gasification furnace oxidant nozzle, when assembling, first install the special-shaped refractory brick and the refractory brick below preliminarily, and adjust and determine the center position of special-shaped refractory brick and gasification furnace blast inlet connector, then unload the special-shaped refractory brick and the refractory brick below it. The connector of protection sleeve is placed on the outer cylindrical surface of one end of special-shaped refractory brick and winds ceramic fiber rope, installs the partition ring between ceramic fiber rope, and the flange of protection sleeve is connected fastening with the blast inlet connector of gasification furnace through bolt, and is sealed by winding pad, and the joint of temperature measuring sleeve is connected with the flange of protection sleeve through screw thread, and is sealed by red copper pad, and the clearance between the connector of temperature measuring sleeve, the connector of protection sleeve and the blast inlet connector of gasification furnace is filled with ceramic fiber felt closely to be flush with the jacket in gasification furnace, and the channel formed between the inner cylindrical surface of the connector of protection sleeve and the nozzle of oxidant pipe, the outer cylindrical surface of connector is communicated with the protection gas hole on the flange of protection sleeve, then install the special-shaped refractory brick and the refractory brick below it formally, the upper part refractory brick, and the cavity formed by the partition ring installed on the connector of protection sleeve is communicated with the pouring hole and exhaust hole on special-shaped refractory brick, and the whole channel communicated with the pouring hole and exhaust hole on special-shaped refractory brick by the cavity formed by the partition ring is poured with refractory sealing castable, and the refractory sealing castable is poured from the pouring hole on special-shaped refractory brick, until the exhaust hole on special-shaped refractory brick is filled with refractory sealing castable, to complete the heat insulation and sealing of protection sleeve and special-shaped refractory brick, the jacket of high temperature area of gasification furnace, and the refractory castable is poured between special-shaped refractory brick and jacket in gasification furnace, and ceramic fiber rope is wound on the nozzle and the outer cylindrical surface of connector of oxidant pipe, and the short section of oxidant pipe is connected fastening with the flange of protection sleeve through bolt, and is sealed by winding pad. BRIEF DESCRIPTION OF DRAWINGS

[0008] The utility model will be further explained in connection with the drawings and examples.

[0009] Figure 1 It is the front view of the utility model.

[0010] Figure 2 It is Figure 1 The local enlarged view (I local enlargement) of

[0011] Figure 3 is a close-up view (II close-up) of Figure 1

[0012] Figure 4 is a cross-sectional view (A-A) of Figure 2

[0013] Figure 5 is a main cross-sectional view of a shaped refractory brick.

[0014] Figure 6 is a left side view of Figure 5

[0015] Figure 7 is a cross-sectional view (B-B) of Figure 5

[0016] Figure 8 is a main cross-sectional view of a partition ring.

[0017] Figure 9 is a cross-sectional view (C-C) of Figure 8

[0018] Figure 10 is a main cross-sectional view of a protective sleeve.

[0019] Figure 11 is a right side view (D view) of Figure 10

[0020] Figure 12 is a main cross-sectional view of an oxidant tube.

[0021] Figure 13 is a cross-sectional view (E-E) of Figure 11

[0022] Figure 14 is a left side view (F view) of Figure 12

[0023] Figure 15 is a cross-sectional view (half cross-sectional view) of a temperature measuring sleeve.

[0024] As Figures 1 to 15 ​​​​​​​​In the figure, the reference numerals of the components are: 1. temperature measuring sleeve hole, 2. pipe cap, 3. refractory sealing castable, 4. special-shaped refractory brick, 5. refractory brick, 6. connecting pipe, 7. refractory castable, 8. gasifier inner jacket, 9. gasifier shell, 10. connecting pipe, 11. ceramic fiber rope, 12. connecting pipe, 13. flange, 14. bolt, 15. red copper pad, 16. joint, 17. short section, 18. winding pad, 19. bolt, 20. winding pad, 21. gasifier tuyere connecting pipe, 22. ceramic fiber felt, 23. ceramic fiber rope, 24. spacer ring, 25. nozzle, 26. protective gas hole, 27. distance rod, 28. pouring hole, 29. exhaust hole, 30. protective sleeve hole, 31. threaded hole, 32. threaded hole, 33. threaded hole, 34. through hole, 35. through hole, 36. external thread, 37. external thread.

[0025] Figure 1 、 3 In the figure, the reference numerals of the components are: 5. refractory brick, 8. gasifier inner jacket, 9. gasifier shell, 21. gasifier tuyere connecting pipe are original components of the slag gasifier. DETAILED DESCRIPTION

[0026] As Figures 5 to 7 , the special-shaped refractory brick (4) has a circular small end and a square large end, and a conical transition on the outer surface between the large end and the small end. The large end surface has a temperature measuring sleeve hole (1), and the protective sleeve hole (30) is in communication between the large end and the small end. The protective sleeve hole (30) is in communication with the pouring hole (28) and the exhaust hole (29) to the outer surface of the special-shaped refractory brick (4). The special-shaped refractory brick (4) can be made of silicon carbide combined with silicon nitride or other high-temperature resistant and oxidation-resistant refractory materials.

[0027] As Figure 8 、 9 , the spacer ring is composed of a spacer ring (24) and a distance rod (27). The spacer ring (24) has a small hole, and the distance rod (27) is assembled through the small hole of the spacer ring (24).

[0028] As Figure 10 、 11 , 13, the protective sleeve is composed of a connecting pipe (12) and a flange (13). The connecting pipe (12) is made of seamless steel pipe, and the flange (13) has a protective gas hole (26) and a threaded hole (33) in the radial direction, and has a threaded hole (31) and a threaded hole (32) on the end surface. The protective gas hole (26) is in communication with the system protective gas through the threaded hole (33). The threaded hole (31) is used for connecting the joint (16) of the temperature measuring sleeve (the temperature measuring sleeve is Figure 15 ), and the threaded hole (32) is used for connecting the short section (17) of the oxidant pipe (the oxidant pipe is Figure 12 ).

[0029] As Figure 12 ,14 The oxidizing agent pipe is composed of a nozzle (25), a connecting pipe (10) and a short section (17). The nozzle (25) is welded to the connecting pipe (10), and the connecting pipe (10) is welded to the short section (17). The connecting pipe (10) is made of seamless steel pipe. The short section (17) has flanges at both ends. The nozzle (25) has a through hole (34), and the short section (17) has a through hole (35). The through hole (34) is connected to the through hole (35) through the connecting pipe (10).

[0030] As shown in Figure 15 The temperature measuring sleeve is composed of a pipe cap (2), a connecting pipe (6) and a joint (16). The pipe cap (2) is welded to the connecting pipe (6), and the connecting pipe (6) is welded to the joint (16). The connecting pipe (6) is made of seamless steel pipe. The joint (16) has an external thread (36) at one end and an external thread (37) at the other end. The temperature measuring sleeve is connected and assembled with the flange (13) of the protective sleeve through the external thread (36) of the joint (16) and the threaded hole (31) of the flange (13).

[0031] As shown in Figures 1 to 15, the slag gasifier oxidant nozzle, during assembly, first preliminarily install the special-shaped refractory brick (4) and the lower refractory brick (5), and adjust and determine the center position of the special-shaped refractory brick (4) and the gasifier blast inlet pipe (21), then remove the special-shaped refractory brick (4) and the refractory brick (5). The protection sleeve pipe (12) is placed on the outer cylindrical surface of one end of the special-shaped refractory brick (4) protection sleeve hole (30), the ceramic fiber rope (23) is wound, the ceramic fiber rope (23) is installed between the partition ring, the flange (13) of the protection sleeve pipe is connected and fastened with the gasifier blast inlet pipe (21) through the bolt (14), and is sealed by the winding pad (20), the protection gas hole (26) on the flange (13) of the protection sleeve pipe is communicated with the system protection gas through the threaded hole (33), the channel formed between the inner cylindrical surface of the protection sleeve pipe (12) and the nozzle (25) of the oxidant pipe and the outer cylindrical surface of the pipe (10) is communicated with the protection gas hole (26) on the flange (13) of the protection sleeve pipe, and one end of the protection gas hole (26) has the threaded hole (33) connected with the system protection gas; the temperature measuring sleeve is connected and fastened with the threaded hole (31) on the flange (13) of the protection sleeve pipe through the outer thread (36) on the joint (16) on the temperature measuring sleeve, and is sealed by the red copper pad (15); the gap between the pipe (6) of the temperature measuring sleeve, the pipe (12) of the protection sleeve pipe and the gasifier blast inlet pipe (21) is tightly filled with the ceramic fiber felt (22) to be flush with the jacket (8) in the gasifier; then the special-shaped refractory brick (4) and the refractory brick (5) are formally installed, the cavity formed by the partition ring installed on the pipe (12) of the protection sleeve pipe is communicated with the pouring hole (28) and the exhaust hole (29) on the special-shaped refractory brick (4), the whole channel communicated with the pouring hole (28) and the exhaust hole (29) on the special-shaped refractory brick (4) by the cavity formed by the partition ring is poured with the refractory sealing pouring material (3), the refractory sealing pouring material (3) is poured from the pouring hole (28) on the special-shaped refractory brick (4), and the exhaust hole (29) is filled with the refractory sealing pouring material (3), so that the heat insulation and sealing of the protection sleeve pipe and the special-shaped refractory brick (4) and the high temperature area of the gasifier are completed; the refractory pouring material (7) is poured between the special-shaped refractory brick (4) and the jacket (8) in the gasifier; the ceramic fiber rope (11) is wound on the outer cylindrical surface of the nozzle (25) and the pipe (10) of the oxidant pipe, and the short section (17) of the oxidant pipe is connected and fastened with the threaded hole (32) on the flange (13) of the protection sleeve pipe through the bolt (19), and is sealed by the winding pad (18).

[0032] Before the slag gasifier oxidant nozzle works, the protection gas hole (26) in the radial direction of the flange (13) of the protection sleeve pipe introduces the protection gas, and the positive pressure airflow is formed between the inner cylindrical surface of the pipe (12) of the protection sleeve pipe and the nozzle (25) and the pipe (10) of the oxidant pipe, so as to prevent the high temperature gas in the gasifier from burning the pipe (12) of the protection sleeve pipe, the nozzle (25) and the pipe (10) of the oxidant pipe.

[0033] The slag gasifier oxidant nozzle, the oxidant pipe avoids direct contact with the high-temperature slag of the gasifier, reduces the risk of burning loss, prolongs the operation cycle, and can replace the oxidant pipe without stopping the furnace for overhaul. Its non-cooling design avoids taking away heat during work, and improves the oxidation reaction efficiency of the gasifier.

Claims

1. A slag gasifier oxidant nozzle, consisting of profiled refractory bricks, refractory castable, ceramic fiber felt, temperature measuring sleeve, protective sleeve, oxidant tube, ceramic fiber rope, partition ring, refractory sealing castable, characterized in that The flange of the protection sleeve is connected and fastened with the gasifier blast inlet pipe by bolts and is sealed by winding gaskets; the joint of the temperature measuring sleeve is connected and fastened with the flange of the protection sleeve by threads and is sealed by red copper gaskets, one end of the connecting pipe of the temperature measuring sleeve is arranged in the temperature measuring sleeve hole of the special-shaped refractory brick; one end of the connecting pipe of the protection sleeve is arranged in the protection sleeve hole of the special-shaped refractory brick, the outer cylindrical surface of the connecting pipe is wound by ceramic fiber ropes, the ceramic fiber ropes are separated by separation rings, the cavities formed by the separation rings are communicated with the whole passage of the pouring hole and the exhaust hole of the special-shaped refractory brick and are poured by refractory sealing castable; the space between the connecting pipes of the temperature measuring sleeve and the protection sleeve and the gasifier blast inlet pipe is tightly filled by ceramic fiber felt to be flush with the inner jacket of the gasifier; the special-shaped refractory brick is poured by refractory castable between the special-shaped refractory brick and the inner jacket of the gasifier; the nozzle and the connecting pipe of the oxidant pipe are wound by ceramic fiber ropes on the outer cylindrical surface, the short section of the oxidant pipe is connected and fastened with the flange of the protection sleeve by bolts and is sealed by winding gaskets; the passage formed between the inner cylindrical surface of the connecting pipe of the protection sleeve and the outer cylindrical surface of the nozzle and the connecting pipe of the oxidant pipe is communicated with the protection gas hole on the flange of the protection sleeve.

2. The oxidant nozzle of a slagging gasifier according to claim 1, characterized in that The special-shaped refractory brick has a pouring hole, an exhaust hole, a protection sleeve hole and a temperature measuring sleeve hole, the pouring hole and the exhaust hole are communicated with the protection sleeve hole.

3. The oxidant nozzle of a slagging gasifier according to claim 1, characterized in that The protection sleeve has a connecting pipe and a flange, the connecting pipe is welded with the flange, the flange has a protection gas hole communicated with the connecting pipe in the radial direction, one end of the protection gas hole has a threaded hole connected with the system protection gas, the end surface of the flange has a threaded hole connected with the joint of the temperature measuring sleeve and a threaded hole connected with the short section of the oxidant pipe.

4. The slag gasifier oxidant nozzle of claim 1 wherein The separation ring has a spacer and a distance rod, the spacer has a small hole, and the distance rod is assembled through the small hole of the spacer.

5. The slag gasifier oxidant nozzle of claim 1 wherein The oxidant pipe has a nozzle, a connecting pipe and a short section, the nozzle is welded with the connecting pipe, the connecting pipe is welded with the short section, the nozzle has a through hole, the short section has a through hole, the two ends of the short section are flanges, and the through hole of the nozzle is communicated with the through hole of the short section through the connecting pipe.

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