CN211650318U - Hydrogen-oxygen catalytic efficient combustion gas supply system of low-calorific-value boiler - Google Patents
Hydrogen-oxygen catalytic efficient combustion gas supply system of low-calorific-value boiler Download PDFInfo
- Publication number
- CN211650318U CN211650318U CN201921898381.4U CN201921898381U CN211650318U CN 211650318 U CN211650318 U CN 211650318U CN 201921898381 U CN201921898381 U CN 201921898381U CN 211650318 U CN211650318 U CN 211650318U
- Authority
- CN
- China
- Prior art keywords
- air
- oxyhydrogen
- supply system
- distribution plate
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a boiler catalytic combustion air supply system technical field discloses a high-efficient burning air supply system of low heat value boiler oxyhydrogen catalysis, including furnace, furnace internally mounted air distribution plate, a plurality of hoods are arranged to air distribution plate upper end rectangular, air distribution plate middle part intercommunication supply-air duct, and supply-air duct has set gradually the air-blower from the air inlet end, economizer, flowmeter and air collecting chamber, the supply-air duct mid-mounting mixed gas input pipeline of air collecting chamber right-hand member, and the mixed gas input pipeline has set gradually oxyhydrogen generator and flow control valve from the air inlet end. The utility model discloses, rational in infrastructure, the modern design makes the catalytic action of oxyhydrogen mist can the full high-efficient performance, and the burning is abundant, and furnace temperature is high, and harmful ingredients such as CO, dioxin greatly reduce in the flue gas simultaneously, and the flue gas total amount also reduces to some extent, has good energy-conserving and environmental protection effect.
Description
Technical Field
The utility model relates to a boiler catalytic combustion air supply system technical field specifically is a high-efficient combustion air supply system of low heat value boiler oxyhydrogen catalysis, especially an utilize oxyhydrogen mist to carry out the high-efficient combustion-supporting system of catalysis to various solid fuel.
Background
At present, the oxygen supply method for boiler combustion utilizes a blower to pressurize air, and the air is heated by an economizer and then is fed into a hearth. If the air supply amount is too large, although complete combustion can be realized, the nitrogen has no radiation capability due to too much nitrogen component, thereby influencing the radiation heat transfer of the flue gas to the boiler. If the amount of supplied air is insufficient, combustion is not sufficient, the combustion temperature is lowered, a large amount of dioxin is generated, and carbon dioxide in the exhaust gas is also increased.
The problems can be solved by adopting a method of hydrogen-oxygen mixed gas catalytic combustion, and multiple targets of complete combustion, clean tail gas, low heat content of slag, reduction of total amount of smoke, energy conservation and the like are achieved under the condition of not increasing an air excess coefficient. It is a technology. The realization of the comprehensive technical advantages requires the effective and safe delivery of the mixed gas of hydrogen and oxygen. At present, a large amount of circumstances are that oxyhydrogen mist merges into the simple furnace of sending into of air supply pipeline once, and oxyhydrogen mist catalytic combustion's effect does not give full play to, and partial gas supply system application effect in use is still unsatisfactory, and is safe, high-efficient, simple and convenient gas supply unit is waited to research and development and improvement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high-efficient burning air supply system of low heat value boiler oxyhydrogen catalysis, this system extensively are applicable to the gangue, the catalytic combustion of low heat value solid fuel such as mud, the transformation of chain building, circulating fluidized bed boiler efficiency's improvement to and multiple occasions such as rubbish burning tail gas's improvement, with the problem of proposing in solving above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a high-efficient combustion air supply system of low calorific value boiler oxyhydrogen catalysis, includes furnace, furnace internally mounted air distribution plate, and a plurality of hoods are installed to air distribution plate upper end rectangular arrangement, and air distribution plate middle part intercommunication supply-air duct, supply-air duct have set gradually air-blower, economizer, flowmeter and air collecting chamber from the air inlet end, and the supply-air duct mid-mounting mixed gas input pipeline of air collecting chamber right-hand member has set gradually oxyhydrogen generator and flow control valve from the inlet end to the mixed gas input pipeline.
As a further aspect of the present invention: the oxyhydrogen generator is a water electrolysis oxyhydrogen generator.
As a further aspect of the present invention: and a control unit is electrically connected between the flow regulating valve and the flowmeter.
As a further aspect of the present invention: the gas collection chamber is also provided with a pressure sensor.
As a further aspect of the present invention: and a slag discharge port is arranged at the bottom of the hearth.
As a further aspect of the present invention: the cross section of the upper part of the blast cap is provided with a single hole, and the edge line of the hole is tangent to the circumference of the cross section.
As a further aspect of the present invention: the cross section of the upper part of the blast cap is provided with a plurality of holes, and the plurality of holes are symmetrically arranged along the circumference relative to the axis of the blast cap.
Compared with the prior art, the beneficial effects of the utility model are that:
the low-calorific-value boiler hydrogen-oxygen catalytic efficient combustion gas supply system is reasonable in structure and novel in design, so that the catalytic action of hydrogen-oxygen mixed gas can be fully and efficiently exerted, the combustion is full, the furnace temperature is high, meanwhile, harmful components such as CO and dioxin in flue gas are greatly reduced, the total amount of the flue gas is also reduced, and good energy-saving and environment-friendly effects are achieved.
Drawings
FIG. 1 is a schematic structural diagram of a hydrogen-oxygen catalytic high-efficiency combustion gas supply system of a low-calorific-value boiler.
FIG. 2 is a schematic structural diagram of an air cap arranged on an air distribution plate in an oxyhydrogen catalytic efficient combustion air supply system of a low-calorific-value boiler.
FIG. 3 is a schematic structural diagram of an A-shaped hood in a hydrogen-oxygen catalytic high-efficiency combustion gas supply system of a low-calorific-value boiler.
FIG. 4 is a schematic sectional view of A-A in the gas supply system for hydrogen-oxygen catalytic combustion in a low-calorific-value boiler.
FIG. 5 is a schematic structural diagram of a B-type hood in a hydrogen-oxygen catalytic high-efficiency combustion gas supply system of a low-calorific-value boiler.
FIG. 6 is a schematic sectional view of the structure of B-B in the oxyhydrogen catalytic highly efficient combustion gas supply system of a low calorific value boiler.
In the figure: 1-oxyhydrogen generator, 2-blower, 3-economizer, 4-flowmeter, 5-gas collection chamber, 6-blast cap, 7-furnace chamber, 8-air distribution plate, 9-pressure sensor, 10-flow control valve, 11-control unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1 and 2, in the embodiment of the present invention, a gas supply system for hydrogen-oxygen catalytic high-efficiency combustion of a low-calorific-value boiler comprises a furnace 7, the bottom of the hearth 7 is provided with a slag discharge port, the inside of the hearth 7 is provided with an air distribution plate 8, the upper end of the air distribution plate 8 is provided with a plurality of air caps 6 in a matrix arrangement, the middle part of the air distribution plate 8 is communicated with an air supply pipeline, the air supply pipeline is sequentially provided with an air blower 2, an economizer 3, a flow meter 4 and an air collecting chamber 5 from an air inlet end, a pressure sensor 9 is also arranged in the gas collection chamber 5, a mixed gas input pipeline is arranged in the middle of an air supply pipeline at the right end of the gas collection chamber 5, the mixed gas input pipeline is sequentially provided with a hydrogen-oxygen generator 1 and a flow regulating valve 10 from an air inlet end, a control unit 11 is electrically connected between the flow regulating valve 10 and the flowmeter 4, and the oxyhydrogen generator 1 is a water electrolysis oxyhydrogen generator 1.
A water electrolysis oxyhydrogen generator 1 is adopted, an oxyhydrogen mixed gas input pipeline is merged into a boiler air supply pipeline, and after the mixture is stable in an air collection chamber 5, the mixed gas is sent into a hearth 7 through an air distribution plate 8 and an air cap 6. The boiler air supply pipeline passes through the economizer 3 in advance, a flow meter 4 is arranged before the boiler air supply pipeline enters the gas collection chamber 5, and an output signal of the flow meter 4 enters the control unit 11. The control unit 11 obtains an instruction from the instruction, and instructs the control valve on the flow regulating valve 10 on the output pipeline of the oxyhydrogen generator 1 to act, so as to ensure that the flow of the oxyhydrogen mixed gas 1 is mixed with the flow of the boiler inlet air according to the required proportion.
The upper part of the wind distribution plate 8 is provided with wind caps 6 which are arranged in a matrix shape, and the wind caps 6 have two types, namely A type and B type.
Referring to fig. 3 and 4, the blast cap 6 arranged in a matrix shape on the upper part of the wind distribution plate 8 is an a-type blast cap 6, the a-type blast cap 6 means that a single hole is formed in the cross section of the upper part of the blast cap 6, and the edge line of the hole is tangent to the circumference of the cross section.
Example 2
Referring to fig. 5 and 6, in another embodiment of the present invention, the difference between this embodiment and the above embodiment is that the blast cap 6 arranged in a matrix shape on the upper portion of the wind distribution plate 8 is B-shaped, and the B-shaped blast cap 6 refers to: the cross section of the upper part of the blast cap 6 is provided with a plurality of holes which are symmetrically arranged along the circumference relative to the axis of the blast cap 6.
In the combination of the two types of the blast caps 6A and B and the matrix formed by only the type A blast caps, after the mixed gas of air and hydrogen and oxygen is sprayed out from the blast caps 6. A rotary aerodynamic field is formed in the boiler, the upstream flame ignites the downstream coal dust to form a stable combustion fireball, the stable ignition and the intensified combustion of the coal dust are facilitated, and the filling degree of the flame in the boiler is good. Due to rotation, the retention time of the pulverized coal in the hearth is long, and the pulverized coal is beneficial to being burnt out.
The upper part of the wind distribution plate 8 can also be selected from A-type and B-type wind caps 6 which are arranged in a matrix shape, the peripheral wind cap is selected from A-type, the middle part is selected from B-type and arranged in a matrix shape, the peripheral wind cap 6 is selected from A-type, and the middle part is selected from B-type.
The utility model discloses a theory of operation is: according to the boiler capacity, a matched water electrolysis oxyhydrogen generator 1 is selected, an output pipeline of the water electrolysis oxyhydrogen generator is merged into a boiler air supply pipeline, the air supply pipeline passes through an economizer 3 in advance, then enters an air collection chamber 5 through a flowmeter 4, is mixed in the air collection chamber 5, and is heated and decelerated stably, and then is sent into a hearth 7 through an air distribution plate 8 and an air cap 6. The output signal of the flow meter 4 enters the control unit 11. The control unit 11 obtains an instruction from the above to indicate the generation of hydrogen and oxygen, and the flow regulating valve 10 on the output pipeline 1 is actuated to ensure that the flow of the hydrogen and oxygen mixed gas is mixed with the flow of the boiler inlet air according to the required proportion. A type blast caps 6 are arranged on the upper portion of the air distribution plate 8 in a matrix shape, after air and hydrogen-oxygen mixed gas is sprayed out from nozzles in the tangential direction of the blast caps 6, a rotary aerodynamic field is formed in the boiler, the upstream flame ignites the downstream coal powder to form a stable combustion fireball, stable ignition and intensified combustion of the coal powder are facilitated, and the degree of filling of the flame in the boiler is good. Due to rotation, the retention time of the pulverized coal in the hearth is long, and the pulverized coal is beneficial to being burnt out.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. An oxyhydrogen catalytic high-efficiency combustion gas supply system of a low-calorific-value boiler comprises a hearth (7), wherein an air distribution plate (8) is arranged in the hearth (7), the device is characterized in that the middle of the air distribution plate (8) is communicated with an air supply pipeline, the air supply pipeline is sequentially provided with an air blower (2), a coal economizer (3), a flow meter (4) and an air collection chamber (5) from an air inlet end, a mixed gas input pipeline is installed in the middle of the air supply pipeline at the right end of the air collection chamber (5), the mixed gas input pipeline is sequentially provided with a hydrogen-oxygen generator (1) and a flow regulating valve (10) from the air inlet end, a plurality of air hoods (6) are arranged at the upper end of the air distribution plate (8) in a matrix shape, a single hole is formed in the cross section of the upper part of one part of the air hoods (6), the edge line of the hole is tangent to the circumference of the cross section, a plurality of holes.
2. The oxyhydrogen catalysis high-efficiency combustion gas supply system of the low-heating-value boiler according to claim 1, characterized in that the oxyhydrogen generator (1) is a water electrolysis oxyhydrogen generator (1).
3. The oxyhydrogen catalytic high-efficiency combustion gas supply system of a low-heating-value boiler according to claim 1, characterized in that a control unit (11) is electrically connected between the flow regulating valve (10) and the flow meter (4).
4. The oxyhydrogen catalytic high-efficiency combustion gas supply system of the low-heating-value boiler according to claim 2, characterized in that the gas collection chamber (5) is further provided with a pressure sensor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921898381.4U CN211650318U (en) | 2019-11-05 | 2019-11-05 | Hydrogen-oxygen catalytic efficient combustion gas supply system of low-calorific-value boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921898381.4U CN211650318U (en) | 2019-11-05 | 2019-11-05 | Hydrogen-oxygen catalytic efficient combustion gas supply system of low-calorific-value boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211650318U true CN211650318U (en) | 2020-10-09 |
Family
ID=72691625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921898381.4U Active CN211650318U (en) | 2019-11-05 | 2019-11-05 | Hydrogen-oxygen catalytic efficient combustion gas supply system of low-calorific-value boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211650318U (en) |
-
2019
- 2019-11-05 CN CN201921898381.4U patent/CN211650318U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201885203U (en) | Horizontal type internal combustion three-return shell boiler capable of burning biomass, fuel oil or gas | |
| CN106168376B (en) | A kind of twin furnace coal dust gasification low nitrogen burning Industrial Boiler | |
| CN201589407U (en) | Coal-fired gasification boiler | |
| CN204534555U (en) | A kind of flue gas recirculation device for reducing NO_x formation | |
| CN201237236Y (en) | Composite secondary air apparatus for chain boiler combustion | |
| CN101354129A (en) | Biomass and fire coal composite fuel boiler | |
| CN112902154A (en) | Over-fire air system with controllable steam temperature deviation and CO concentration at two sides of opposed firing boiler | |
| CN203036634U (en) | Fractional combustion low-nitrogen oxide rotational flow burner | |
| CN210568371U (en) | Novel pulverized coal fired boiler low-nitrogen combustion system | |
| CN211650318U (en) | Hydrogen-oxygen catalytic efficient combustion gas supply system of low-calorific-value boiler | |
| CN205191550U (en) | High -efficient environmental protection and energy saving coal fired boiler | |
| CN1044281C (en) | Adjustable concentration low load automatic smooth burning and slag-bonding protective device for coal powder furnace | |
| CN202501450U (en) | Self-circulation pulverized coal furnace device | |
| CN216010822U (en) | System for realizing zero carbon emission of coal-fired unit by using oxygen-enriched flue gas | |
| CN102588953B (en) | Self-circulation type pulverized coal furnace device | |
| CN201212729Y (en) | Biomass granular fuel boiler | |
| CN210035475U (en) | Boiler burner | |
| CN204534544U (en) | Biomass boiler denitration burner and double burner biomass boiler | |
| CN203478300U (en) | Industrial pulverized coal boiler island | |
| CN209638993U (en) | The flue gas recirculation system of CFB boiler NOx generation amount is reduced when underload | |
| CN205939204U (en) | High -efficient low emission boiler gas recirculation device | |
| CN205939672U (en) | Improve energy -saving pot stove of intake air temperature | |
| CN1226552C (en) | Low Nox combustor with mixed coal and gas fuel | |
| CN205878590U (en) | High -efficiency water -heating boiler | |
| CN212537840U (en) | Biomass low-nitrogen combustion device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |