Biomass hydrogen low-nitrogen burner

Abstract

The utility model relates to the technical field of combustors, in particular to a biomass hydrogen low-nitrogen combustor which can adjust the concentration of hydrogen, avoids explosion caused by overhigh hydrogen concentration, and is convenient to use and high in reliability and safety. Comprising a bottom plate and a low-nitrogen burner, the low-nitrogen burner is installed on the bottom plate, and an air inlet pipe is arranged on the low-nitrogen burner; the device further comprises a purification mechanism, a conveying mechanism and a gas concentration adjusting mechanism, the input end and the output end of the conveying mechanism are connected with the purification mechanism and the gas concentration adjusting mechanism respectively, the purification mechanism is used for purifying impurities in gas, the gas concentration adjusting mechanism is used for adjusting the concentration of hydrogen, and the output end of the gas concentration adjusting mechanism communicates with the gas inlet pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of combustor, in particular to a kind of biomass hydrogen low-nitrogen combustor. BACKGROUND

[0002] Biomass hydrogen refers to the hydrogen generated by gasification of biomass (such as straw, sawdust), and a low-nitrogen combustor is a device for converting internal energy into heat energy through combustion. In the prior art, a quick-mounting low-nitrogen combustor with patent application number 202420687712.4 is disclosed, which is mainly composed of a mounting plate and a combustor body. When in use, fuel is added to the combustor for combustion. However, when biomass hydrogen is used as fuel for combustion, hydrogen and oxygen mixed at a certain concentration can easily explode under high temperature conditions. The device in the prior art does not have a device for controlling the concentration of hydrogen, resulting in poor reliability and safety. SUMMARY

[0003] To solve the above technical problems, the utility model provides a biomass hydrogen low-nitrogen combustor that can adjust the concentration of hydrogen, avoid explosion caused by excessive hydrogen concentration, and is easy to use, reliable and safe.

[0004] The biomass hydrogen low-nitrogen combustor of the utility model, comprising a bottom plate and a low-nitrogen combustion machine, the low-nitrogen combustion machine is installed on the bottom plate, and an air inlet pipe is arranged on the low-nitrogen combustion machine; it also comprises a purification mechanism, a conveying mechanism and a gas concentration adjusting mechanism, the input end and the output end of the conveying mechanism are connected with the purification mechanism and the gas concentration adjusting mechanism respectively, the purification mechanism is used for purifying impurities in gas, the gas concentration adjusting mechanism is used for adjusting the concentration of hydrogen, and the output end of the gas concentration adjusting mechanism is communicated with the air inlet pipe; when biomass hydrogen is burned in the low-nitrogen combustion machine, the biomass hydrogen is first purified to remove solid particle impurities in the purification mechanism, then the conveying mechanism is turned on, the purified hydrogen enters the gas concentration adjusting mechanism, the concentration of hydrogen is reduced, and then the biomass hydrogen with adjusted gas concentration enters the low-nitrogen combustion machine through the air inlet pipe for use. It can adjust the concentration of hydrogen, avoid explosion caused by excessive hydrogen concentration, and is easy to use, reliable and safe.

[0005] Preferably, the gas concentration adjusting mechanism comprises a conveying cylinder, a support plate, a conveying pipe, a nitrogen storage tank, a gas conveying tank and a stirring mechanism, the conveying cylinder is fixedly installed on the bottom plate through the support plate, a cavity is arranged in the conveying cylinder, the left part of the conveying pipe is communicated with the cavity of the conveying cylinder, the right part of the conveying pipe is communicated with the gas inlet pipe, a steady flow valve is arranged on the conveying pipe, the stirring mechanism is installed on the conveying cylinder and has a stirring function, the nitrogen storage tank is installed on the bottom plate, the output end of the nitrogen storage tank is communicated with the conveying cylinder through the gas conveying tank, and a valve is arranged on the gas conveying tank; after the biomass hydrogen is purified in the purification mechanism, the biomass hydrogen enters the cavity of the conveying cylinder, then the valve on the gas conveying tank is opened, the nitrogen in the nitrogen storage tank enters the conveying cylinder through the gas conveying tank, then the stirring mechanism is opened, the biomass hydrogen is mixed with the nitrogen to reduce the concentration of the hydrogen, and then the hydrogen and the nitrogen enter the low-nitrogen combustion machine through the conveying pipe and the gas inlet pipe for use.

[0006] Preferably, the stirring mechanism comprises a motor and a stirring shaft, the motor is fixedly installed on the left end of the conveying cylinder, the stirring shaft is rotatably installed on the conveying cylinder, a plurality of stirring blades are arranged on the stirring shaft, and the left end of the stirring shaft is connected with the output end of the motor; after the biomass hydrogen and the nitrogen are added into the cavity of the conveying cylinder, the motor is opened, the motor drives the stirring shaft to rotate, the mixing of the nitrogen and the hydrogen in the cavity of the conveying cylinder is promoted, and the adjustment of the concentration of the hydrogen is facilitated.

[0007] Preferably, the conveying mechanism comprises a conveying pump and a gas conveying pipe, the output end of the conveying pump is communicated with the left part of the cavity of the conveying cylinder through the gas conveying pipe, and the input end of the conveying pump is communicated with the purification mechanism; the conveying pump is opened, and then the purified biomass hydrogen enters the conveying cylinder through the conveying pump and the gas conveying pipe to adjust the concentration, so that the adjustment of the concentration of the biomass hydrogen is facilitated.

[0008] Preferably, the purification mechanism comprises a filtering mechanism, a support, a filtering cylinder, a sealing cover, a gas conveying pipe and a hydrogen concentration detector, the filtering cylinder is fixedly installed on the bottom plate through the support, a cavity is arranged in the filtering cylinder, the upper end of the filtering cylinder is provided with an opening, the sealing cover is installed on the upper end of the filtering cylinder through bolts, the output end of the gas conveying pipe is communicated with the upper part of the cavity of the filtering cylinder, the hydrogen concentration detector is installed on the filtering cylinder, the filtering mechanism is installed on the filtering cylinder and has a filtering function; the biomass hydrogen is added into the cavity of the filtering cylinder, then the biomass hydrogen is filtered through the filtering mechanism to remove solid particulate impurities, and then the hydrogen is conveyed to the conveying cylinder through the conveying pump and the gas conveying pipe.

[0009] Preferably, the filtering mechanism comprises a hydraulic cylinder, a push rod and a filter plate, the hydraulic cylinder is fixedly installed on the bottom plate, the push rod is slidably installed on the filter cylinder, the lower end of the push rod is connected with the output end of the hydraulic cylinder, the filter plate is fixedly installed on the upper end of the push rod, the filter plate is slidably installed in the cavity of the filter cylinder, the outer side wall of the filter plate and the inner side wall of the filter cylinder are in sealing sliding connection, the gas feeding pipe is located above the filter plate, and the input end of the conveying pump is located below the filter plate; through the above setting, when the biomass hydrogen enters the cavity of the filter cylinder, the gas is filtered through the filter plate and then enters the conveying cylinder through the conveying pump and the gas conveying pipe; when it is necessary to clean the impurities on the upper end of the filter plate, first, the adding of the gas into the filter cylinder is stopped, then the sealing cover is opened, and then the hydraulic cylinder is opened, so that the filter plate is lifted to the upper side of the filter cylinder through the push rod, thereby facilitating the cleaning of the impurities on the upper end of the filter plate.

[0010] Preferably, the conveying pipe is provided with a one-way valve; through the above setting, the reverse flow of the gas on the conveying pipe is prevented, and the safety and reliability are improved.

[0011] Compared with the prior art, the hydrogen concentration can be adjusted, the explosion caused by the too high hydrogen concentration is avoided, the use is convenient, and the reliability and safety are high. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the first axonometric structure schematic view of the utility model;

[0013] Figure 2 is the second axonometric structure schematic view of the utility model;

[0014] Figure 3 is the section structure schematic view of the purifying mechanism;

[0015] Figure 4 is the structure schematic view of the purifying mechanism and the gas concentration adjusting mechanism;

[0016] Figure 5 is the structure schematic view of the stirring mechanism.

[0017] In the drawings, 1 is a bottom plate, 2 is a low-nitrogen combustion machine, 3 is an air inlet pipe, 4 is a conveying cylinder, 5 is a supporting plate, 6 is a conveying pipe, 7 is a nitrogen storage tank, 8 is a gas conveying tank, 9 is a motor, 10 is a stirring shaft, 11 is a conveying pump, 12 is a gas conveying pipe, 13 is a support, 14 is a filter cylinder, 15 is a sealing cover, 16 is a gas feeding pipe, 17 is a hydrogen concentration detector, 18 is a hydraulic cylinder, 19 is a push rod, and 20 is a filter plate. DETAILED DESCRIPTION

[0018] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0019] Embodiment 1

[0020] As Figures 1 to 5 , the biomass hydrogen low-nitrogen combustor includes bottom plate 1, low-nitrogen combustor 2, purification mechanism, conveying mechanism and gas concentration adjusting mechanism, low-nitrogen combustor 2 is installed on bottom plate 1, low-nitrogen combustor 2 is provided with inlet pipe 3, the input end and output end of conveying mechanism are connected with purification mechanism and gas concentration adjusting mechanism respectively, purification mechanism is used for purifying the impurity in gas, gas concentration adjusting mechanism is used for adjusting the concentration of hydrogen, the output end of gas concentration adjusting mechanism is communicated with inlet pipe 3;When biomass hydrogen is burned into low-nitrogen combustor 2, first, biomass hydrogen is purificated into solid particle impurities in purification mechanism, then, conveying mechanism is opened, and the purified hydrogen enters gas concentration adjusting mechanism, and the concentration of hydrogen is reduced, then, the biomass hydrogen with adjusted gas concentration enters low-nitrogen combustor 2 through inlet pipe 3 and can be used, which can adjust the concentration of hydrogen, avoids explosion caused by too high hydrogen concentration, is convenient to use, and is high in reliability and safety.

[0021] As Figure 1 And Figure 4 , the gas concentration adjusting mechanism includes conveying cylinder 4, supporting plate 5, conveying pipe 6, nitrogen storage tank 7, gas conveying tank 8 and stirring mechanism, conveying cylinder 4 is fixedly installed on bottom plate 1 through supporting plate 5, a cavity is arranged in conveying cylinder 4, the left part of conveying pipe 6 is communicated with the cavity of conveying cylinder 4, the right part of conveying pipe 6 is communicated with inlet pipe 3, a steady flow valve is arranged on conveying pipe 6, stirring mechanism is installed on conveying cylinder 4, stirring mechanism has the function of stirring, nitrogen storage tank 7 is installed on bottom plate 1, the output end of nitrogen storage tank 7 is communicated with conveying cylinder 4 through gas conveying tank 8, a valve is arranged on gas conveying tank 8;When biomass hydrogen is purified in purification mechanism, biomass hydrogen enters the cavity in conveying cylinder 4, then, the valve on gas conveying tank 8 is opened, and the nitrogen in nitrogen storage tank 7 enters conveying cylinder 4 through gas conveying tank 8, then, stirring mechanism is opened, and biomass hydrogen is mixed with nitrogen, the concentration of hydrogen is reduced, then, hydrogen and nitrogen enter low-nitrogen combustor 2 through conveying pipe 6 and inlet pipe 3 and can be used, which facilitates the adjustment of hydrogen concentration and improves the safety during use.

[0022] As Figure 5The stirring mechanism comprises a motor 9 and a stirring shaft 10, the motor 9 is fixedly installed at the left end of the conveying cylinder 4, the stirring shaft 10 is rotatably installed on the conveying cylinder 4, a plurality of stirring blades are arranged on the stirring shaft 10, and the left end of the stirring shaft 10 is connected with the output end of the motor 9; after the biomass hydrogen and nitrogen are added into the cavity of the conveying cylinder 4, the motor 9 is turned on, the motor 9 drives the stirring shaft 10 to rotate, the mixing of the nitrogen and hydrogen in the cavity of the conveying cylinder 4 is promoted, and the adjustment of the hydrogen concentration is facilitated.

[0023] As Figure 1 and Figure 4 The conveying mechanism comprises a conveying pump 11 and a gas conveying pipe 12, the output end of the conveying pump 11 is communicated with the left part of the cavity of the conveying cylinder 4 through the gas conveying pipe 12, and the input end of the conveying pump 11 is communicated with the purifying mechanism; the purified biomass hydrogen is conveyed into the conveying cylinder 4 through the conveying pump 11 and the gas conveying pipe 12 to adjust the concentration, by turning on the conveying pump 11, and the adjustment of the biomass hydrogen concentration is facilitated.

[0024] As Figure 1 and Figure 3 The purifying mechanism comprises a filtering mechanism, a support 13, a filtering cylinder 14, a sealing cover 15, a gas conveying pipe 16 and a hydrogen concentration detector 17, the filtering cylinder 14 is fixedly installed on the bottom plate 1 through the support 13, the filtering cylinder 14 is provided with a cavity, the upper end of the filtering cylinder 14 is provided with an opening, the sealing cover 15 is installed on the upper end of the filtering cylinder 14 through bolts, the output end of the gas conveying pipe 16 is communicated with the upper part of the cavity of the filtering cylinder 14, the hydrogen concentration detector 17 is installed on the filtering cylinder 14, the filtering mechanism is installed on the filtering cylinder 14, and the filtering mechanism has a filtering function; the biomass hydrogen is added into the cavity of the filtering cylinder 14, then the biomass hydrogen is filtered through the filtering mechanism to remove solid particulate impurities, and then the hydrogen is conveyed into the conveying cylinder 4 through the conveying pump 11 and the gas conveying pipe 12.

[0025] As Figure 3The filtering mechanism comprises a hydraulic cylinder 18, a push rod 19 and a filter plate 20, the hydraulic cylinder 18 is fixedly installed on the bottom plate 1, the push rod 19 is slidably installed on the filter cylinder 14, the lower end of the push rod 19 is connected with the output end of the hydraulic cylinder 18, the filter plate 20 is fixedly installed on the upper end of the push rod 19, the filter plate 20 is slidably installed in the cavity of the filter cylinder 14, the outer side wall of the filter plate 20 is in sealing sliding connection with the inner side wall of the filter cylinder 14, the gas delivery pipe 16 is located above the filter plate 20, and the input end of the delivery pump 11 is located below the filter plate 20; through the above setting, when the biomass hydrogen gas enters the cavity of the filter cylinder 14, the gas is filtered through the filter plate 20 and then enters the delivery cylinder 4 through the delivery pump 11 and the gas delivery pipe 12; when it is required to clean the impurities on the upper end of the filter plate 20, firstly, the addition of the gas into the filter cylinder 14 is stopped, then the sealing cover 15 is opened, and then the hydraulic cylinder 18 is opened; the hydraulic cylinder 18 drives the filter plate 20 to ascend to the upper side of the filter cylinder 14 through the push rod 19, so that the cleaning of the impurities on the upper end of the filter plate 20 is facilitated.

[0026] Embodiment 2

[0027] On the basis of embodiment 1, the one-way valve is arranged on the delivery pipe 6; through the above setting, the reverse flow of the gas on the delivery pipe 6 is prevented, and the safety and reliability are improved.

[0028] The low-nitrogen combustion machine 2, the nitrogen gas storage tank 7, the motor 9, the stirring shaft 10, the delivery pump 11, the hydrogen gas concentration detector 17 and the hydraulic cylinder 18 of the biomass hydrogen gas low-nitrogen combustion device are all purchased on the market, and the technical personnel in the industry only needs to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0029] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary technical personnel in the technical field, without departing from the technical principle of the utility model, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection range of the utility model.

Claims

1. A biomass hydrogen low-nitrogen combustor, comprising a base plate (1) and a low-nitrogen combustor (2), the low-nitrogen combustor (2) being installed on the base plate (1), and an air inlet pipe (3) being arranged on the low-nitrogen combustor (2); characterized in that, The gas concentration adjusting mechanism is connected with the input end and the output end of the conveying mechanism and the purifying mechanism respectively, the purifying mechanism is used for purifying impurities in the gas, and the gas concentration adjusting mechanism is used for adjusting the concentration of hydrogen.

2. A biomass hydrogen low NOx combustor as claimed in claim 1, wherein, The gas concentration adjusting mechanism comprises a conveying cylinder (4), a supporting plate (5), a conveying pipe (6), a nitrogen storage tank (7), a gas conveying tank (8) and a stirring mechanism, the conveying cylinder (4) is fixedly installed on the bottom plate (1) through the supporting plate (5), a cavity is arranged in the conveying cylinder (4), the left part of the conveying pipe (6) is communicated with the cavity of the conveying cylinder (4), the right part of the conveying pipe (6) is communicated with the gas inlet pipe (3), a steady flow valve is arranged on the conveying pipe (6), the stirring mechanism is installed on the conveying cylinder (4) and has a stirring function, the nitrogen storage tank (7) is installed on the bottom plate (1), the output end of the nitrogen storage tank (7) is communicated with the conveying cylinder (4) through the gas conveying tank (8), and a valve is arranged on the gas conveying tank (8).

3. A biomass hydrogen low NOx combustor as claimed in claim 2 wherein, The stirring mechanism comprises a motor (9) and a stirring shaft (10), the motor (9) is fixedly installed on the left end of the conveying cylinder (4), the stirring shaft (10) is rotatably installed on the conveying cylinder (4), a plurality of stirring blades are arranged on the stirring shaft (10), and the left end of the stirring shaft (10) is connected with the output end of the motor (9).

4. A biomass hydrogen low NOx combustor as claimed in claim 3 wherein, The conveying mechanism comprises a conveying pump (11) and a gas conveying pipe (12), the output end of the conveying pump (11) is communicated with the left part of the cavity of the conveying cylinder (4) through the gas conveying pipe (12), and the input end of the conveying pump (11) is communicated with the purifying mechanism.

5. A biomass hydrogen low NOx combustor as claimed in claim 4 wherein, The purifying mechanism comprises a filtering mechanism, a support (13), a filtering cylinder (14), a sealing cover (15), a gas conveying pipe (16) and a hydrogen concentration detector (17), the filtering cylinder (14) is fixedly installed on the bottom plate (1) through the support (13), a cavity is arranged in the filtering cylinder (14), the upper end of the filtering cylinder (14) is provided with an opening, the sealing cover (15) is installed on the upper end of the filtering cylinder (14) through bolts, the output end of the gas conveying pipe (16) is communicated with the upper part of the cavity of the filtering cylinder (14), the hydrogen concentration detector (17) is installed on the filtering cylinder (14), and the filtering mechanism is installed on the filtering cylinder (14) and has a filtering function.

6. A biomass hydrogen low NOx combustor as claimed in claim 5 wherein, The filtering mechanism comprises a hydraulic cylinder (18), a push rod (19) and a filtering plate (20), the hydraulic cylinder (18) is fixedly installed on the bottom plate (1), the push rod (19) is slidably installed on the filtering cylinder (14), the lower end of the push rod (19) is connected with the output end of the hydraulic cylinder (18), the filtering plate (20) is fixedly installed on the upper end of the push rod (19), the filtering plate (20) is slidably installed in the cavity of the filtering cylinder (14), the outer side wall of the filtering plate (20) is in sealing sliding connection with the inner side wall of the filtering cylinder (14), the gas conveying pipe (16) is located above the filtering plate (20), and the input end of the conveying pump (11) is located below the filtering plate (20).

7. A biomass hydrogen low NOx combustor as claimed in claim 2 wherein, A one-way valve is arranged on the conveying pipe (6).

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