CN215112591U

CN215112591U - High-temperature top-burning ultralow NOx burner for hydrogen production device

Info

Publication number: CN215112591U
Application number: CN202121045381.7U
Authority: CN
Inventors: 杜俊; 温红林; 杜承衍
Original assignee: Changsha Xinzhong Petrochemical Equipment Co ltd
Current assignee: Changsha Xinzhong Petrochemical Equipment Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-12-10
Anticipated expiration: 2031-05-17

Abstract

High-temperature top-burning ultralow NO for hydrogen production device_xA burner belongs to a burner for an oil refining chemical device. The method is characterized in that: burners of the high-pressure gas gun (11) and the low-pressure gas gun (10) extend into the combustion chamber (7), a primary air channel (4) and a secondary air channel (5) are arranged on the burner body, the primary air channel (4) is communicated with the top of the combustion chamber (7),the secondary air duct (5) is communicated with the middle part of the combustion chamber (7), and air adjusting butterfly valves (9) are arranged in the primary air duct (4) and the secondary air duct (5); a clutch mechanism is arranged between the handle (910) of the air adjusting butterfly valve (9) and the valve plate (902). The utility model adopts the secondary air supply mode to inhibit NO_xThe clutch mechanism can enable the handle and the valve plate to be connected and driven and disconnected, so that the valve plate is prevented from swinging due to mistaken touch of the handle, and the air quantity of the burner main body is accurately controlled.

Description

High-temperature top-burning ultralow NOx burner for hydrogen production device

Technical Field

High-temperature top-burning ultralow NO for hydrogen production device_xA burner belongs to a burner for an oil refining chemical device.

Background

The burner is a general name of a device which sprays and mixes (or sprays and mixes) fuel and air in a certain mode for combustion, and an industrial burner is commonly called a burner, has various types and specifications, and has several categories of fuel oil, gas (coal gas) and coal (coal powder/coal water slurry). The application fields are wide, and the combustor is required in industrial occasions where fuel needs to be combusted to heat materials or react.

With the increasingly strict environmental protection requirements of China, NO is treated_xIs less than or equal to 100mg/m³The existing burner is difficult to meet the national environmental protection requirement. In addition, the air adjusting butterfly valve is usually required to be arranged on the combustor to adjust the air intake entering the combustor, but the air adjusting butterfly valve of the existing combustor is easy to change the position of a valve plate of the air adjusting butterfly valve due to mistaken touch, so that the air volume of the combustor is difficult to control.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: overcomes the defects of the prior art, and provides a method which can reduce NO_xThe discharge amount of the fuel gas can be avoided, and the change of the position of the valve plate of the air-regulating butterfly valve caused by mistaken touch can be avoided_xA burner.

The utility model provides a technical scheme that its technical problem adopted is: the hydrogen production device uses high-temperature top-burning ultra-low NO_xA burner, characterized by: the burner comprises a burner body, a high-pressure gas gun and a low-pressure gas gun, wherein a combustion chamber is arranged at the lower part of the burner body, burners of the high-pressure gas gun and the low-pressure gas gun extend into the combustion chamber, a primary air channel and a secondary air channel are arranged on the burner body, the primary air channel is communicated with the top of the combustion chamber, the secondary air channel is communicated with the middle part of the combustion chamber, and air adjusting butterfly valves are arranged in the primary air channel and the secondary air channel;

a clutch mechanism is arranged between the handle of the air adjusting butterfly valve and the valve plate, and an operating part for operation is arranged on the clutch mechanism.

Preferably, the air adjusting butterfly valve comprises a valve body, a valve plate and a handle, wherein the valve plate is arranged in the valve body in a swinging mode, and the handle is connected with the valve plate through a clutch mechanism.

Preferably, clutching mechanism including decide driving disc, move driving disc and reset spring, decide driving disc and valve plate and link to each other to drive its swing, move driving disc and handle and link to each other to drive its rotation, handle slidable links to each other with the accent wind butterfly valve, reset spring links to each other with the handle to promote its direction motion to keeping away from the accent wind butterfly valve, move and be provided with the card between driving disc and the fixed driving disc and fix solid mechanism. Reset spring promotes the handle to keeping away from the motion of air regulation butterfly valve direction, makes the driving disk and decides the driving disk separation, avoids because the mistake touches the handle and leads to the problem of valve plate upset to accurate control intake.

Preferably, the end surfaces of the fixed transmission disc and the movable transmission disc are provided with gear teeth, and the gear teeth on the fixed transmission disc and the gear teeth on the movable transmission disc are matched to form the clamping mechanism. The fixed transmission disc and the movable transmission disc are clamped and fixed through the gear teeth, so that transmission between the movable transmission disc and the fixed transmission disc is facilitated, and separation of the movable transmission disc and the fixed transmission disc is facilitated.

Preferably, the high-pressure gas rifle set up in the low pressure gas rifle, and high-pressure gas rifle and low pressure gas rifle interval set up to form the low pressure between high-pressure gas rifle and low pressure gas rifle and carry the chamber, the low pressure is carried the chamber and is connected with low pressure gas conveyer pipe, high-pressure gas rifle is connected with high-pressure gas conveyer pipe. The high-pressure gas gun is arranged in the low-pressure gas gun, and gas is guaranteed to be sprayed into the burner body from the middle of the burner body.

Preferably, the combustor main body is internally provided with a wind shield which is in a cylindrical shape and is arranged at an interval with the inner wall of the combustor main body, the upper end of the wind shield is hermetically connected with the inner wall of the combustor main body, burners of the high-pressure gas gun and the low-pressure gas gun extend into the wind shield, the primary air channel is communicated with the top of the wind shield, and the secondary air channel is communicated with the top of the wind shield. The wind shield can separate the inlet air of the primary air channel from the inlet air of the secondary air channel, the primary air distribution stabilizes the root air speed, the flame for combustion is continuously stabilized, the secondary air distribution directly enters the combustion chamber, the fuel and the air are further fully mixed in the combustion chamber, and the intensified combustion is realized.

Preferably, the windshield include last windshield and lower windshield, lower windshield is built by the fire pan brick, the upper end and the combustor main part inner wall sealing connection of last windshield, the upper end of lower windshield and the lower extreme fixed connection of last windshield, the nozzle of high-pressure gas gun and low pressure gas gun all extends down in the windshield.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

the hydrogen production device uses high-temperature top-burning ultra-low NO_xThe burner is provided with a low-pressure gas gun and a high-pressure gas gun, secondary air distribution is realized through a primary air duct and a secondary air duct, so that the flame length is controlled, a secondary air supply mode is adopted, the stable root flame is firstly ensured, and the primary combustion is in the conditions of oxygen deficiency and low-temperature combustion, because NO is NO_xThe activation energy required for the formation reaction is higher than the combustion temperature of the combustible gas, so that NO can be inhibited_xThe clutch mechanism can enable the handle and the valve plate to be connected and driven and disconnected, so that the valve plate is prevented from swinging due to mistaken touch of the handle, and the air quantity of the burner main body is accurately controlled.

Drawings

FIG. 1 shows a high temperature top-fired ultra-low NO system for hydrogen production plant_xA schematic front view cross-sectional view of a burner.

FIG. 2 shows high-temperature top-burning ultra-low NO for hydrogen production plant_xSchematic view from below of the burner.

FIG. 3 shows high temperature top-fired ultra-low NO for hydrogen plant_xA schematic left-side cross-sectional view of a burner.

Fig. 4 is a schematic view of a combination of a high pressure gas gun and a low pressure gas gun.

Fig. 5 is a partial enlarged view of a portion a in fig. 4.

Fig. 6 is a front cross-sectional view of the air regulating butterfly valve.

Fig. 7 is a partial enlarged view of fig. 6 at B.

In the figure: 1. the device comprises a cylinder body 2, a low-pressure gas delivery pipe 3, a high-pressure gas delivery pipe 4, a primary air duct 5, a secondary air duct 6, an upper wind shield 7, a combustion chamber 8, a lower wind shield 9, a wind adjusting butterfly valve 901, a valve body 902, a valve plate 903, a mounting shaft 904, a fixed transmission disc 905, a movable transmission disc 906, a sleeve 907, a pull rod 908, a return spring 909, a chuck 910, a handle 911, an operating rod 912, a circular blind hole 913, a butt joint part 914, a pin shaft hole 915, a pin shaft 10, a low-pressure gas gun 11 and a high-pressure gas gun.

Detailed Description

The present invention is further described with reference to specific embodiments, however, it will be understood by those skilled in the art that the detailed description given herein with respect to the drawings is for better explanation and that the present invention is necessarily to be construed as limited to those embodiments, and equivalents or common means thereof will not be described in detail but will fall within the scope of the present application.

Fig. 1 to 7 are preferred embodiments of the present invention, and the present invention will be further explained with reference to fig. 1 to 7.

High-temperature top-burning ultralow NO for hydrogen production device_xThe combustor comprises a combustor main body, a high-pressure gas gun 11 and a low-pressure gas gun 10, wherein a combustion chamber 7 is arranged at the lower part of the combustor main body, burners of the high-pressure gas gun 11 and the low-pressure gas gun 10 extend into the combustion chamber 7, a primary air channel 4 and a secondary air channel 5 are arranged on the combustor main body, the primary air channel 4 is communicated with the top of the combustion chamber 7, the secondary air channel 5 is communicated with the middle part of the combustion chamber 7, and air adjusting butterfly valves 9 are arranged in the primary air channel 4 and the secondary air channel 5; a clutch mechanism is arranged between the handle 910 of the air adjusting butterfly valve 9 and the valve plate 902, and the clutch mechanism is provided with an operating part for operation. The hydrogen production device uses high-temperature top-burning ultra-low NO_xThe burner is provided with a low-pressure gas gun 10 and a high-pressure gas gun 11, and secondary air distribution is realized through a primary air duct 4 and a secondary air duct 5, so that the flame length is controlled, and a secondary air supply mode is adopted, so that the root flame is firstly ensured to be stabilized, and primary combustion is in oxygen-poor and low-temperature combustion conditions, because NO is NO_xActivity required for the formation reactionThe chemical energy is higher than the combustion temperature of combustible gas, so NO can be inhibited_xThe clutch mechanism can realize the operation of connecting transmission and disconnecting transmission between the handle 910 and the valve plate 902, thereby avoiding the valve plate 902 from swinging due to mistaken touch of the handle 910 and ensuring accurate control of the air volume of the burner main body.

As shown in FIGS. 1 to 3: the combustor main part includes barrel 1 and the combustion chamber 7 built by the fire pan brick, and barrel 1 is the cylindric of vertical setting, and the upper end of barrel 1 seals the setting, and combustion chamber 7 also is the open tube-shape in both ends, and combustion chamber 7 sets up the downside at barrel 1, and the upper end of combustion chamber 7 and the coaxial and sealing connection of the lower extreme of barrel 1. The upper part of the combustion chamber 7 has a cylindrical inner cavity, and the lower part of the combustion chamber has a conical shape with gradually increasing diameter from top to bottom.

High-pressure gas gun 11 and low pressure gas gun 10 all stretch into in the combustor main part downwards, and the nozzle of high-pressure gas gun 11 and the nozzle of low pressure gas gun 10 all extend to the upper portion of the combustion chamber 7 of combustor main part to spout the gas into in the combustion chamber 7. The high-pressure gas gun 11 is connected with a high-pressure gas delivery pipe 3, and the low-pressure gas gun 10 is connected with a low-pressure gas delivery pipe 2.

The combustor is characterized in that a wind shield is arranged in the combustor main body and comprises an upper wind shield 6 and a lower wind shield 8, the upper wind shield 6 is a cylinder with upper and lower ends open, an outward flanging is arranged at the upper end of the upper wind shield 6, and the outer diameter of the upper wind shield 6 is smaller than the inner diameter of the combustor main body, so that the upper wind shield 6 and the inner wall of the combustor main body are arranged at intervals. The outward flanging of the upper wind shield 6 is fixedly and hermetically connected with the inner wall of the burner main body. The lower wind shield 8 is built by fire pan bricks, the lower wind shield 8 is cylindrical, the lower wind shield 8 is coaxially arranged at the lower side of the upper wind shield 6, the upper end of the lower wind shield 8 is fixedly and hermetically connected with the lower end of the upper wind guide cover 6, and the burners of the high-pressure gas gun 11 and the low-pressure gas gun 10 extend into the lower wind shield 8.

One side of the top of the burner main body is provided with a primary air duct 4 and a secondary air duct 5, an output port of the primary air duct 4 and an output port of the secondary air duct 5 are both communicated with an inner cavity of the burner main body, an output port of the primary air duct 4 is arranged on the upper side of the upper windshield 6, so that the primary air duct 4 is communicated with the upper part of the inner cavity of the burner main body, and the secondary air duct 5 is communicated with the lower part of the inner cavity of the burner main body. Air adjusting butterfly valves 9 are arranged on the primary air duct 4 and the secondary air duct 5, so that the air quantity of the primary air duct 4 and the secondary air duct 5 can be conveniently adjusted, and the air distribution ratio of primary air inlet and secondary air inlet can be further controlled.

As shown in FIGS. 4-5: high-pressure gas rifle 11 sets up in low pressure gas rifle 10, and the outer wall of high-pressure gas rifle 11 sets up with the inner wall interval of low pressure gas rifle 10, thereby form the low pressure between low pressure gas rifle 10 and high pressure gas rifle 11 and carry the chamber, the chamber is carried to the low pressure and low pressure gas conveyer pipe 2 is linked together, high pressure gas conveyer pipe 3 sets up the left side at low pressure gas conveyer pipe 2, and the lower extreme of high pressure gas conveyer pipe 3 is buckled right, and be linked together with the upper end of high pressure gas rifle 11, thereby carry the gas to in the lower fan housing 8.

As shown in FIGS. 6 to 7: the air regulating butterfly valve 9 comprises a valve body 901, a valve plate 902 and a handle 910, wherein the valve body 901 is a square cylinder with two open ends, the valve plate 902 is arranged in the valve body 901, the valve plate 902 is rotatably arranged in the valve body 901 through an installation shaft 903, the valve plate 902 synchronously swings along with the rotation of the installation shaft 903, and the upper end of the installation shaft 903 upwards extends out of the valve body 901. The handle 910 is provided on the upper side of the valve body 901, and the handle 910 is connected to the upper end of the mounting shaft 903 through a clutch mechanism.

Clutch mechanism is including deciding driving disk 904, moving driving disk 905 and reset spring 908, decides driving disk 904 and moves driving disk 905 and all sets up with the installation axle 903 is coaxial, decides the downside that driving disk 904 interval set up at moving driving disk 905, decides driving disk 904 and installation axle 903 and link to each other to drive installation axle 903 synchronous revolution, move driving disk 905 slidable and set up on valve body 901, and move driving disk 905 and valve body 901 relatively rotation. The upper end face of the fixed transmission disc 904 is provided with gear teeth, the lower end face of the movable transmission disc 905 is also provided with gear teeth, and the gear teeth of the fixed transmission disc 904 are matched with the gear teeth of the movable transmission disc 905 to form a clamping mechanism.

The clutch mechanism further includes a sleeve 906, a pull rod 907, and an operating lever 911, the pull rod 907 is disposed on the upper side of the mounting shaft 903, the pull rod 907 is connected to the upper end of the mounting shaft 903, and the pull rod 907 and the mounting shaft 903 are relatively rotatable therebetween. The sleeve 906 cover is established outside the upper end of pull rod 907 and installation axle 903, and relative rotation sets up between sleeve 906 and the installation axle 903, and the lower extreme of sleeve 906 and movable driving dish 905 fixed connection make movable driving dish 905 go up and down along with sleeve 906 synchronous, and movable driving dish 905 rotates along with sleeve 906 synchronous. The lower portion of the pull rod 907 is located in the upper portion of the sleeve 906, an inner spline is arranged on the inner wall of the upper portion of the sleeve 906, an outer spline matched with the inner spline is arranged on the outer wall of the pull rod 907, therefore, the pull rod 907 and the sleeve 906 rotate synchronously, and the handle 910 is fixedly connected with the upper end of the pull rod 907 and drives the pull rod 907 to rotate synchronously. The operating rod 911 is arranged at the lower side of the handle 910, the middle part of the operating rod 911 is hinged with the handle 910 to form a lever mechanism, the right end of the operating rod 911 is an operating part, the left end is arranged at the upper side of the sleeve 906, and the sleeve 906 is pushed to move downwards. A support spring for urging the operation portion to swing downward is provided between the operation lever 911 and the grip 910.

A chuck 909 is coaxially installed at the upper end of the sleeve 906, the chuck 909 is fixedly connected with the sleeve 906, the return spring 908 is sleeved outside the sleeve 906 between the valve body 901 and the chuck 909, and the return spring 908 is in a compressed state. The return spring 908 urges the sleeve 906 to return upward, and the elastic force of the return spring 908 is greater than that of the support spring.

The left end of the operating lever 911 is disposed on the upper side of the chuck 909, the upper side of the chuck 909 is provided with a groove, and the left end of the operating lever 911 is slidably disposed in the groove. The operating rod 911 can push the chuck 909 downwards, and further push the movable driving disc 905 downwards through the sleeve 906, and the movable driving disc is engaged with the fixed driving disc 904, so that the valve plate 902 can synchronously swing along with the rotation of the handle 901.

A pin shaft 915 is arranged between the pull rod 907 and the mounting shaft 903, a round blind hole 912 is arranged at the bottom end of the pull rod 907, a round abutting part 913 is arranged at the upper end of the mounting shaft 903, the abutting part 913 can rotatably extend into the round blind hole 912, and a groove is arranged in the middle of the abutting part 913 in a surrounding mode. The lower part of the tie rod 907 is provided with a radial pin shaft hole 914, and the pin shaft hole 914 is communicated with the round blind hole 912. The two ends of the pin 915 are both spherical with convex middle parts, the inner end of the pin 915 extends into the groove, and the outer end is supported on the inner wall of the sleeve 906, so that the pull rod 907 and the mounting shaft 903 can rotate relatively, and the pull rod 907 and the mounting shaft 903 are axially fixed. Two pin shaft holes 914 are uniformly distributed at intervals around the pull rod 907, and a pin shaft 915 is arranged in each pin shaft hole 914.

The combustor adopts multi-stage air distribution, the primary air distribution stabilizes the root wind speed, the flame of combustion is continuously stabilized, the secondary air distribution directly enters the combustion chamber 7, the fuel and the air are further fully mixed in the combustion chamber, and the intensified combustion is realized.

The combustion flame is short, rigid and powerful, has good environmental protection characteristic, and is used for a top-burning heating furnace with high environmental protection index requirement and shorter flame length requirement. The burner is a NO suppression burner_xThe combustor for generating and reducing the airflow noise generated in the combustion process not only has excellent environment-friendly effect, but also ensures that the fuel gas and the combustion-supporting air are mixed more uniformly, thereby achieving more sufficient combustion and better combustion effect, achieving the purposes of energy conservation and environment protection, and adjusting the proportion of primary air and secondary air according to the requirement, thereby controlling the length of flame.

Realizing low NO_xThe technical measures of emission and low-noise operation are as follows: adopts a secondary air supply mode to firstly ensure the stable root flame and make the primary combustion in the conditions of oxygen deficiency and low-temperature combustion due to NO_xThe activation energy required for the formation reaction is higher than the combustion temperature of the combustible gas, so that NO can be inhibited_xAnd (4) generating.

Burner capable of controlling NO in flue gas_xThe average concentration is less than or equal to 35mg/Nm³The average concentration of CO is less than or equal to 50mg/Nm³Far below the national standard.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. High-temperature top-burning ultralow NO for hydrogen production device_xBurning ofThe device, its characterized in that: the burner comprises a burner body, a high-pressure gas gun (11) and a low-pressure gas gun (10), wherein a combustion chamber (7) is arranged at the lower part of the burner body, burners of the high-pressure gas gun (11) and the low-pressure gas gun (10) extend into the combustion chamber (7), a primary air channel (4) and a secondary air channel (5) are arranged on the burner body, the primary air channel (4) is communicated with the top of the combustion chamber (7), the secondary air channel (5) is communicated with the middle part of the combustion chamber (7), and air adjusting butterfly valves (9) are arranged in the primary air channel (4) and the secondary air channel (5);

a clutch mechanism is arranged between a handle (910) of the air adjusting butterfly valve (9) and the valve plate (902), and the clutch mechanism is provided with an operating part for operation.

2. The high temperature top-fired ultra-low NO for hydrogen plant according to claim 1_xA burner, characterized by: the air regulating butterfly valve (9) comprises a valve body (901), a valve plate (902) and a handle (910), wherein the valve plate (902) is arranged in the valve body (901) in a swinging mode, and the handle (910) is connected with the valve plate (902) through a clutch mechanism.

3. The hydrogen plant according to claim 1 or 2, wherein the hydrogen plant is high temperature top-fired with ultra-low NO_xA burner, characterized by: clutch mechanism include fixed driving dish (904), move driving dish (905) and reset spring (908), fixed driving dish (904) link to each other with valve plate (902), and drive its swing, move driving dish (905) and link to each other with handle (910), and drive its rotation, handle (910) slidable links to each other with accent wind butterfly valve (9), reset spring (908) link to each other with handle (910), and promote its direction motion to keeping away from accent wind butterfly valve (9), be provided with the card between movable driving dish (905) and the fixed driving dish (904) and fix solid mechanism.

4. The high temperature top-fired ultra-low NO for hydrogen plant according to claim 3_xA burner, characterized by: the end surfaces of the fixed transmission disc (904) and the movable transmission disc (905) are provided with gear teeth, and the fixed transmission disc (905)904) And the gear teeth on the movable transmission disc (905) are matched to form the clamping mechanism.

5. The high temperature top-fired ultra-low NO for hydrogen plant according to claim 1_xA burner, characterized by: high pressure gas rifle (11) set up in low pressure gas rifle (10), and high pressure gas rifle (11) and low pressure gas rifle (10) interval set up to form the low pressure between high pressure gas rifle (11) and low pressure gas rifle (10) and carry the chamber, the low pressure is carried the chamber and is connected with low pressure gas conveyer pipe (2), high pressure gas rifle (11) are connected with high pressure gas conveyer pipe (3).

6. The high temperature top-fired ultra-low NO for hydrogen plant according to claim 1_xA burner, characterized by: the combustor main part in be provided with the windshield, the windshield be the tube-shape that sets up with combustor main part inner wall interval, the upper end and the combustor main part inner wall sealing connection of windshield, in the nozzle of high pressure gas rifle (11) and low pressure gas rifle (10) all extended the windshield, primary air channel (4) were linked together with the top of windshield, secondary air channel (5) communicate with the top of windshield.

7. The high temperature top-fired ultra-low NO for hydrogen plant according to claim 6_xA burner, characterized by: the wind shield comprises an upper wind shield body (6) and a lower wind shield body (8), wherein the lower wind shield body (8) is built by fire pan bricks, the upper end of the upper wind shield body (6) is hermetically connected with the inner wall of the burner main body, the upper end of the lower wind shield body (8) is fixedly connected with the lower end of the upper wind shield body (6), and the burners of the high-pressure gas gun (11) and the low-pressure gas gun (10) extend into the lower wind shield body (8).