CN213060755U - Gasification furnace residual oil burner - Google Patents

Gasification furnace residual oil burner Download PDF

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Publication number
CN213060755U
CN213060755U CN202021955469.8U CN202021955469U CN213060755U CN 213060755 U CN213060755 U CN 213060755U CN 202021955469 U CN202021955469 U CN 202021955469U CN 213060755 U CN213060755 U CN 213060755U
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China
Prior art keywords
spray pipe
flow channel
residual oil
oxygen
oxygen flow
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CN202021955469.8U
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Chinese (zh)
Inventor
林建东
刘翔
邱丽生
陈平平
张爱新
陈伟雄
周胜军
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Fujian United Petrochemical Co ltd
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Fujian United Petrochemical Co ltd
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Abstract

The utility model discloses a gasification furnace residual oil burner, which comprises a multi-stage spray pipe and an outer shell sleeved outside the multi-stage spray pipe; the multi-stage spray pipe comprises a first spray pipe, a second spray pipe, a third spray pipe and a fourth spray pipe which are coaxially arranged from inside to outside in sequence; a first oxygen flow channel is arranged in the first spray pipe; a second oxygen channel is formed between the second spray pipe and the first spray pipe; a residual oil flow channel is formed between the third spray pipe and the second spray pipe; a third oxygen flow channel is formed between the fourth spray pipe and the third spray pipe; a steam flow channel is formed between the outer shell and the fourth spray pipe; and the outlet ends of the second spray pipe, the third spray pipe, the fourth spray pipe and the outer shell are all in a contracted shape. The utility model discloses changed the overall arrangement of each runner in the current nozzle, adopted the arrangement of oxygen-residual oil-oxygen-steam from interior to exterior to design each runner to make the quick intensive mixing of component of each runner, improved combustion efficiency effectively, reduced combustion strength, and then helped prolonging the life of nozzle.

Description

Gasification furnace residual oil burner
Technical Field
The utility model relates to a gasification technical field, in particular to gasifier residual oil nozzle.
Background
The burner is one of the important parts of the gasification furnace, and the operation life of the burner is the biggest restriction factor of long-period stable operation of the heavy oil gasification process. The working temperature in the gasifier is usually about 1350 ℃, the end part of the burner is exposed in the high-temperature heat radiation and hot air flow environment for a long time, the front end of the burner is easy to ablate and damage, the service life of the burner is generally short, frequent shutdown and maintenance are needed, huge production cost is caused for enterprises, and the gasifier is possibly damaged after the burner is damaged, so that great potential safety hazards exist.
Disclosure of Invention
The utility model provides a gasifier residual oil nozzle, its main aim at solve the problem that current nozzle easily ablates and damages, life weak point etc..
The utility model adopts the following technical scheme:
a gasification furnace residual oil burner comprises a multi-stage spray pipe and an outer shell sleeved outside the multi-stage spray pipe; the multi-stage spray pipe comprises a first spray pipe, a second spray pipe, a third spray pipe and a fourth spray pipe which are coaxially arranged from inside to outside in sequence; a first oxygen flow channel is arranged in the first spray pipe; a second oxygen channel is formed between the second spray pipe and the first spray pipe; a residual oil flow channel is formed between the third spray pipe and the second spray pipe; a third oxygen flow channel is formed between the fourth spray pipe and the third spray pipe; a steam flow channel is formed between the outer shell and the fourth spray pipe; and the outlet ends of the second spray pipe, the third spray pipe, the fourth spray pipe and the outer shell are all in a contracted shape.
Further, the external contraction angle G of the second nozzle is 23 +/-1 degrees; the external contraction angle H of the third spray pipe is 30 +/-1 degrees; the external contraction angle K of the fourth nozzle is 50 +/-1 degrees.
Further, the inner wall of the first nozzle is in a straight pipe shape, the outer wall of the first nozzle is in a contraction shape, and the outer contraction angle F of the first nozzle is 11 +/-1 degrees.
Further, the cross-sectional area of the outlet end of the first oxygen flow channel is the smallest; the sectional area of the outlet end of the residual oil flow passage is the largest, and the sectional area of the outlet end of the residual oil flow passage is smaller than the sum of the sectional areas of the outlet ends of the first oxygen flow passage, the second oxygen flow passage and the third oxygen flow passage.
Furthermore, the diameter E of the outlet end of the first oxygen flow channel is 35.18 +/-0.5 mm; the diameter D of the outlet end of the second oxygen flow channel is 54.24 +/-0.5 mm; the diameter C of the outlet end of the residual oil flow channel is 81.9 +/-0.5 mm; the diameter B of the outlet end of the third oxygen flow channel is 94.64 +/-0.5 mm.
Furthermore, the diameter A of the outlet end of the steam flow passage is 106.93 +/-0.5 mm.
Compared with the prior art, the utility model discloses the beneficial effect who produces lies in:
1. the utility model discloses changed the overall arrangement of each runner in the current nozzle, adopted the arrangement of oxygen-residual oil-oxygen-steam from interior to exterior to design each runner to make the quick intensive mixing of component of each runner, improved combustion efficiency effectively, reduced combustion strength, and then helped prolonging the life of nozzle.
2. The utility model discloses an outer contraction angle that changes each spray tube adjusts the jet distance of each spray tube to increase flame length, move down gasifier heat affected zone, make it keep away from the nozzle tip as far as possible, reduce the heat radiation influence that the nozzle tip received, and then effectively improve the life of nozzle.
3. The utility model discloses the sectional area to each runner accounts for and has carried out optimization adjustment to make oxygen, residual oil and the abundant misce bene of steam that the nozzle erupted, ensure the abundant burning of residual oil from this, effectively improve the combustion efficiency of residual oil.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a schematic partial cross-sectional view of the middle burner of the present invention (the water inlet channel, the water outlet channel, and the U-shaped flow channel are not shown).
Fig. 3 is a schematic partial cross-sectional view of the outer shell of the present invention.
Fig. 4 is an enlarged schematic view of a portion a in fig. 3.
Fig. 5 is an enlarged schematic view of a portion a in fig. 3.
In the figure: 1. a multi-stage nozzle; 11. a first nozzle; 110. a first oxygen flow channel; 12. a second nozzle; 120. a second oxygen flow channel; 13. a third nozzle; 130. a residual oil flow channel; 14. a fourth nozzle; 140. a third oxygen flow channel; 15. an oxygen interface; 16. a residual oil interface; 17. a steam interface;
2. an outer housing; 20. a steam flow channel; 21. a lip; 210. a U-shaped flow channel; 211. a return section 212, a first horn section; 213. a circular arc transition section; 214. a reverse direct current section; 215. a second horn section; 216. a turbulent flow section; 22. a jacket; 221. a water inlet channel; 222. a water outlet channel; 23. a barrel; 231. a water inlet flow channel; 232. a water outlet flow channel; 24. a cooling water inlet; 25. and a cooling water outlet.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent to one skilled in the art that the present invention may be practiced without these details.
Referring to fig. 1 and 2, a gasifier residual oil burner comprises a multi-stage spray pipe 1 and an outer shell 2 sleeved outside the multi-stage spray pipe 1; the multi-stage spray pipe 1 comprises a first spray pipe 11, a second spray pipe 12, a third spray pipe 13 and a fourth spray pipe 14 which are coaxially arranged from inside to outside in sequence; wherein: the first nozzle 11 is communicated with the oxygen interface 15 to form a first oxygen flow channel 110 for injecting oxygen outwards; the second nozzle 12 is communicated with the oxygen interface 15, and the annular flow channel between the second nozzle 12 and the first nozzle 11 is a second oxygen flow channel 120 for injecting oxygen outwards; the third spray pipe 13 is communicated with the residual oil interface 16, and the annular flow passage between the third spray pipe 13 and the second spray pipe 12 is a residual oil flow passage 130 for spraying residual oil outwards; the fourth nozzle 14 is communicated with the oxygen interface 15, and an annular flow passage between the fourth nozzle 14 and the third nozzle 13 is a third oxygen flow passage 140 for injecting oxygen outwards; the outer shell 2 is communicated with the steam interface 17, and the annular flow passage between the outer shell and the fourth nozzle 14 is a steam flow passage 20 for injecting steam outwards. The utility model discloses changed the overall arrangement of each runner in the current nozzle, adopted the arrangement of oxygen-residual oil-oxygen-steam from interior to exterior to design each runner to make the quick intensive mixing of component of each runner, improved combustion efficiency effectively, reduced combustion strength, help prolonging the life of nozzle.
Referring to fig. 1 and 2, in order to increase the flame length, the heat affected zone of the gasification furnace is moved down to keep it away from the end of the burner as far as possible, the outlet ends of the second spray pipe 12, the third spray pipe 13, the fourth spray pipe 14 and the outer shell 2 of the utility model are all designed to be contracted, specifically, the external contraction angle G of the second spray pipe 12 is 23 degrees; the external contraction angle H of the third nozzle 13 is 30 °; the outer convergent angle K of the fourth nozzle 14 is 50 °. The inner wall of the first nozzle 11 is straight, the outer wall is contracted, and the outer contraction angle F is 11 °. The design can lead the distance between the farthest point of the jet impact area and the outlet end of the burner in each flow passage to be arranged from far to near according to the following sequence: the second oxygen runner 120, the residual oil runner 130, the third oxygen runner 140 and the steam runner 20, thereby achieving the purpose of moving the heat affected zone of the gasification furnace downwards. In practical production, each external contraction angle can be finely adjusted up and down within the range of 1 degree, so that the oxygen impact area of the second oxygen flow channel 120 and the oxygen impact area of the third oxygen flow channel 140 can completely cover the residual oil impact area of the residual oil flow channel 130, thereby ensuring the full combustion of residual oil and effectively improving the combustion efficiency of residual oil.
Reference is made to fig. 1 andfig. 2 shows that, in order to make the oxygen, the residual oil and the steam sprayed by the burner nozzle fully and uniformly mixed, the sectional area of each flow channel is optimally adjusted, so that the sectional area of the outlet end of the first oxygen flow channel 110 is the smallest, the sectional area of the outlet end of the residual oil flow channel 130 is the largest, and the sectional area of the outlet end of the residual oil flow channel 130 is smaller than the sum of the sectional areas of the outlet ends of the first oxygen flow channel 110, the second oxygen flow channel 120 and the third oxygen flow channel 140. Specifically, the diameter E of the outlet end of the first oxygen flow channel 110 was 35.18mm, and the sectional area thereof was 971.54mm2(ii) a The diameter D of the outlet end of the second oxygen flow channel is 54.24mm, and the cross section area is 1337.91mm2(ii) a The diameter C of the outlet end of the residual oil flow passage is 81.9mm, and the cross section area is 2956.02mm2(ii) a The diameter B of the outlet end of the third oxygen flow passage is 94.64mm, and the cross section area is 1765.56mm2(ii) a The diameter A of the outlet end of the steam flow passage is 106.93mm, and the cross section area is 1944.68mm2(ii) a In actual production, the diameter of each flow passage can be finely adjusted up and down within the range of 0.5 mm.
Referring to fig. 1 to 5, the outer case 2 includes a lip 21, a jacket 22, and a cylinder 23, which are connected in this order; an annular water inlet channel 231 is arranged on the inner side of the cylinder 23, and the water inlet channel 231 is communicated with the cooling water inlet 24; an annular water outlet flow channel 232 is arranged on the outer side of the cylinder 23, and the water outlet flow channel 232 is communicated with the cooling water outlet 25; a U-shaped flow passage 210 is arranged in the lip 21 in a surrounding manner; the jacket 22 is provided with a plurality of water inlet channels 221 and water outlet channels 222 arranged along the circumferential direction, one end of each of the plurality of water inlet channels 221 is communicated with the water inlet flow passage 231, and the other end of each of the plurality of water inlet channels 221 is communicated with the water inlet end of the U-shaped flow passage 210; one end of the plurality of water outlet channels 222 is connected to the water outlet end of the U-shaped channel 210, and the other end is connected to the water outlet channel 232.
Referring to fig. 3 to 5, in order to improve the cooling efficiency and prolong the service life of the burner, the utility model discloses optimize the adjustment to the structure of U-shaped runner 210, specifically, U-shaped runner 210 includes backward flow section 211, first loudspeaker section 212, circular arc changeover portion 213, reverse direct current section 214, second loudspeaker section 215 and turbulent flow section 216 that communicate along the water flow direction in proper order.
Referring to fig. 3 to 5, the backflow segment 211 is an arc-shaped flow segment, the radius R1 of the arc surface of the inner wall of the backflow segment 211 is 1.5mm, and the radius R2 of the arc surface of the outer wall of the backflow segment is 3mm, so that the cooling water in the water inlet channel 221 can smoothly enter the backflow segment 211, the impact force of the water flow on the lip 21 is reduced, and the burner is effectively protected. The highest point of the backflow section 211 is higher than the lowest point of the plurality of water inlet holes 221, thereby preventing the cooling water from flowing back into the water inlet holes 221. In actual production, the inner wall camber radius R1 and the outer wall camber radius R2 of the return section 211 can be fine-tuned up and down within the range of 0.1 mm.
Referring to fig. 3 to 5, the first trumpet section 212 and the second trumpet section 215 both gradually expand along the water flow direction, and the included angle α of the first trumpet section 212 is smaller than the included angle β of the second trumpet section 215, so that the cooling water can smoothly enter the next flow section of the U-shaped flow channel 20. Specifically, the included angle α of the first horn section 212 is 6 °; the angle beta of the second horn section 215 is 9 deg.. In actual production, the included angle of each horn section can be finely adjusted up and down within the range of 0.5 degrees.
Referring to fig. 3 to 5, the diameter a of the water inlet channel 221 is greater than the diameter b of the reverse direct current section 214 and smaller than the diameter c of the water outlet channel 222, so that the cooling water can be rapidly sprayed into the U-shaped channel 20 from the water inlet channel 221, and rapidly flows out from the water outlet channel 222 after heat exchange is performed in the U-shaped channel 20, thereby effectively improving heat dissipation efficiency and ensuring cooling effect. Specifically, the diameter a of the water inlet hole 221 is 5.8 mm; the diameter b of the reverse direct current section 214 is 3.5 mm; the diameter c of the water outlet channel 222 is 8.2mm, and the diameter of each flow section can be finely adjusted up and down within the range of 0.8mm in actual production.
Referring to fig. 3 to 5, the diameter of the turbulent flow section 216 gradually increases in the water flow direction. The water flow enters the turbulent flow section 216 from the second horn section 215, and turbulent flow can occur due to space release, so that the flow velocity is increased, cooling water after heat exchange flows out from the plurality of water outlet channels 222 as soon as possible, the heat dissipation efficiency can be effectively improved, the cooling effect is ensured, high-temperature damage to the burner is avoided, the service life of the burner is prolonged, and the maintenance cost is reduced.
The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims (6)

1. A gasification furnace residual oil burner comprises a multi-stage spray pipe and an outer shell sleeved outside the multi-stage spray pipe; the method is characterized in that: the multi-stage spray pipe comprises a first spray pipe, a second spray pipe, a third spray pipe and a fourth spray pipe which are coaxially arranged from inside to outside in sequence; a first oxygen flow channel is arranged in the first spray pipe; a second oxygen flow channel is formed between the second spray pipe and the first spray pipe; a residual oil flow channel is formed between the third spray pipe and the second spray pipe; a third oxygen flow channel is formed between the fourth spray pipe and the third spray pipe; a steam flow channel is formed between the outer shell and the fourth spray pipe; and the outlet ends of the second spray pipe, the third spray pipe, the fourth spray pipe and the outer shell are all in a contracted shape.
2. A gasifier resid burner as in claim 1, wherein: the external contraction angle G of the second spray pipe is 23 +/-1 degrees; the external contraction angle H of the third spray pipe is 30 +/-1 degrees; the external contraction angle K of the fourth spray pipe is 50 +/-1 degrees.
3. A gasifier resid burner as in claim 1, wherein: the inner wall of the first spray pipe is in a straight pipe shape, the outer wall of the first spray pipe is in a contraction shape, and the outer contraction angle F of the first spray pipe is 11 +/-1 degrees.
4. A gasifier resid burner as in claim 1, wherein: the cross-sectional area of the outlet end of the first oxygen flow channel is smallest; the sectional area of the outlet end of the residual oil flow passage is the largest, and the sectional area of the outlet end of the residual oil flow passage is smaller than the sum of the sectional areas of the outlet ends of the first oxygen flow passage, the second oxygen flow passage and the third oxygen flow passage.
5. A gasifier resid burner as in claim 4, wherein: the diameter E of the outlet end of the first oxygen flow channel is 35.18 +/-0.5 mm; the diameter D of the outlet end of the second oxygen flow channel is 54.24 +/-0.5 mm; the diameter C of the outlet end of the residual oil flow channel is 81.9 +/-0.5 mm; the diameter B of the outlet end of the third oxygen flow channel is 94.64mm plus or minus 0.5 mm.
6. A gasifier resid burner as in claim 4, wherein: the diameter A of the outlet end of the steam flow channel is 106.93 +/-0.5 mm.
CN202021955469.8U 2020-09-09 2020-09-09 Gasification furnace residual oil burner Active CN213060755U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021955469.8U CN213060755U (en) 2020-09-09 2020-09-09 Gasification furnace residual oil burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021955469.8U CN213060755U (en) 2020-09-09 2020-09-09 Gasification furnace residual oil burner

Publications (1)

Publication Number Publication Date
CN213060755U true CN213060755U (en) 2021-04-27

Family

ID=75557517

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021955469.8U Active CN213060755U (en) 2020-09-09 2020-09-09 Gasification furnace residual oil burner

Country Status (1)

Country Link
CN (1) CN213060755U (en)

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