CN104633653A - Powder fuel hydrogenation and self-oxygen supply combustion furnace - Google Patents
Powder fuel hydrogenation and self-oxygen supply combustion furnace Download PDFInfo
- Publication number
- CN104633653A CN104633653A CN201510044299.5A CN201510044299A CN104633653A CN 104633653 A CN104633653 A CN 104633653A CN 201510044299 A CN201510044299 A CN 201510044299A CN 104633653 A CN104633653 A CN 104633653A
- Authority
- CN
- China
- Prior art keywords
- heater
- fuel
- air
- hydrogenation
- blown
- 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.)
- Pending
Links
Abstract
The invention provides a powder fuel hydrogenation and self-oxygen supply combustion furnace which comprises a furnace body with a vertical cylindrical structure, wherein a fuel mixing nozzle used for blowing powder fuel into the furnace body along a vertical direction is formed in the top end of the furnace body; a primary air blowing-in hole and a secondary air blowing-in hole are formed in the inner wall of the fuel mixing nozzle from top to bottom; the primary air blowing-in hole and the secondary air blowing-in hole are formed in the inner wall of the fuel mixing nozzle so that primary air and secondary air are blown in along a tangent direction of the inner wall of the fuel mixing nozzle; a plurality of tangent catalyst spraying-in devices used for spraying a catalyst into the furnace body are arranged at the upper section of the furnace body; a tertiary air inlet is formed in the middle section of the furnace body; a mixed combustion spraying hole is formed in the side wall of the furnace body, and positioned in the lower part of the furnace body. The powder fuel hydrogenation and self-oxygen supply combustion furnace provided by the invention is high in combustion efficiency, less in generation amount of nitric oxide, and relatively high in ash trapping capability and heat efficiency, can adapt to different fuels, and can be used for regulating a large load.
Description
Technical field
The present invention relates to equipment manufacturing technology, particularly relate to a kind of powder fuel hydrogenation confession oxygen-fired furnace, belong to boiler combustion equipment manufacturing technology field.
Background technology
The direct combustion thermal efficiency of the tradition fuel such as coal, living beings is low, seriously polluted.In prior art, reducing pollution to improve efficiency of combustion, generally all adopting the mode of will burn again after the fuel gasification such as coal and living beings, to overcome the shortcoming of directly burning, in prior art, generally adopting gasification furnace; But gasification furnace investment is large, be difficult to safeguard, high to the processing requirements of fuel, be difficult to universal in practical application and be not easy operation.So need in prior art a kind of small investment, effective, be easy to operation and the combustion system of environment-friendly high-efficiency and equipment.
Summary of the invention
The object of this invention is to provide a kind of multiple types powder burner being applicable to various Industrial Boiler, stove heat supply, combustion furnace of the present invention have efficiency of combustion, NO_x formation few, be easy to the advantages such as operation.
Powder fuel hydrogenation confession oxygen-fired furnace of the present invention, comprising: body of heater; Described body of heater is vertical and cylindrical structure; The top of described body of heater offers for making powder fuel vertically be blown into fuel mix spout in body of heater; The inwall of described fuel mix spout also offers First air mouth blown and Secondary Air mouth blown from top to bottom; Described First air mouth blown and described Secondary Air mouth blown are all arranged at the inwall of described fuel mix spout, to make First air and Secondary Air being tangentially blown into all along described fuel mix spout inwall;
The epimere of described body of heater is provided with multiple tangential jetting device of catalyst for being sprayed into by catalyst in body of heater;
The stage casing of described body of heater also offers tertiary air entrance, and described tertiary air entrance is arranged at the inwall of described body of heater, to make tertiary air being tangentially blown into along described inboard wall of furnace body;
The sidewall of described body of heater offers mixed combustion ejiction opening, and described mixed combustion ejiction opening is positioned at the bottom of described body of heater.
Powder fuel hydrogenation confession oxygen-fired furnace as above, wherein, the bottom of described body of heater offers except cinder notch.
Powder fuel hydrogenation confession oxygen-fired furnace as above, wherein, the internal diameter of described fuel mix spout is 1: 4.2 with the internal diameter ratio of described body of heater.
Powder fuel hydrogenation confession oxygen-fired furnace as above, wherein, described combustion furnace also comprises: frequency conversion type fuel atomizer; Described frequency conversion type fuel atomizer and described fuel mix spout connect.
Powder fuel hydrogenation confession oxygen-fired furnace as above, wherein, the inwall of described body of heater is equipped with refractory masses.
Powder fuel hydrogenation confession oxygen-fired furnace as above, wherein, the outer wall of described body of heater is provided with annular wind channel, described annular wind channel is connected with described First air mouth blown and/or Secondary Air gateway.
Powder fuel hydrogenation confession oxygen-fired furnace as above, wherein, the distance between described First air mouth blown and described Secondary Air mouth blown is 120-210mm.
Powder fuel hydrogenation confession oxygen-fired furnace as above, wherein, the top of described body of heater is provided with the first flame detector; The bottom of described body of heater is provided with the second flame detector.
Powder fuel hydrogenation confession oxygen-fired furnace as above, wherein, the First air air coefficient that described First air mouth blown is blown into is between 0.40 ~ 0.96.
Combustion furnace of the present invention, powder fuel is after spraying into through fuel mix spout, through the swirl flow combustion of First air and Secondary Air, substantially increase the suspension time of powder, when controlling First air and secondary air coefficient, not only control the burning degree of fuel, also substantially increase efficiency of combustion; And constantly add and spray into catalyst to improve hydrogenation from oxygen delivery capacity in the process of burning, thus mixed combustion ejiction opening gas is burnt completely in outside; In addition, the fuel of multiple rotary is after Thorough combustion, and residue automatic sedimentation, also greatly facilitates maintenance.
Combustion furnace of the present invention is the equipment under coal clean combustion technology, and can use polynary pluralities of fuel, and fuel is popularity more.Carbon by burning and the catalyst reaction of the pluralities of fuel such as coal, living beings, is displaced certain hydrogen and oxygen by combustion furnace of the present invention in combustion.Hydrogen participates in burning, and oxygen can reduce air and nitrogen introduction volume wherein voluntarily.By regulating air introduction volume, and oxygen air, voluntarily cracking gone out and imflammable gas fully mix rear flameless combustion, and make combustible harmonious combustion, do not have obvious flame, reduce or eliminate localized hyperthermia, NO_x formation is few.Combustion furnace of the present invention has higher lime-ash trapping ability and the thermal efficiency, can adapt to different fuel, can carry out large Load Regulation.
Accompanying drawing explanation
Fig. 1 is the structure chart of the powder fuel hydrogenation confession oxygen-fired furnace of the embodiment of the present invention;
Fig. 2 is the operating diagram of the powder fuel hydrogenation confession oxygen-fired furnace of the embodiment of the present invention.
Detailed description of the invention
Combustion furnace of the present invention is the equipment adopting clean combustion technique, can use the powder fuel of the multiple types such as coal, living beings.
As shown in Figure 1, powder fuel hydrogenation confession oxygen-fired furnace of the present invention, comprising: body of heater 100; Described body of heater 100 is vertical and cylindrical structure; The top of described body of heater 100 offers for making powder fuel vertically be blown into fuel mix spout 4 in body of heater; The inwall of described fuel mix spout 4 also offers First air mouth blown 1 and Secondary Air mouth blown 2 from top to bottom; Described First air mouth blown 1 and described Secondary Air mouth blown 2 are all arranged at the inwall of described fuel mix spout 4, to make First air and Secondary Air being tangentially blown into all along described fuel mix spout 4 inwall;
The epimere of described body of heater 100 is provided with multiple tangential jetting device 5 of catalyst for being sprayed into by catalyst in body of heater;
The stage casing of described body of heater 100 also offers tertiary air entrance 3, and described tertiary air entrance 3 is arranged at the inwall of described body of heater 100, to make tertiary air being tangentially blown into along described body of heater 100 inwall;
The sidewall of described body of heater 100 offers mixed combustion ejiction opening 8, and described mixed combustion ejiction opening 8 is positioned at the bottom of described body of heater 100.
As shown in Figure 2, combustion furnace of the present invention, fuel enters from fuel mix spout 4, fuel mix spout 4 was lighted a fire in the past, and in igniting section, the powder fuel such as coal dust or biomass powder can tangentially spraying into from fuel mix spout 4, First air tangentially sprays into from each spout of the circuit of sidewall, the top High Rotation Speed of two strands of air-flows simultaneously in body of heater 100, mutually mixes, thus forms swirl flow combustion section A; The special flow field structure of swirl flow combustion section A is conducive to powder granule and air rapid mixing carries out suspension combustion, and defines certain eddy current and flow-disturbing, the fine powder fuel of part and lime-ash can be stoped to be taken out of prematurely, make it have enough time of staying.In order to improve efficiency of combustion further, the air capacity that can control First air makes air coefficient between 0.40 ~ 0.96, thus make powder fuel carry out imperfect combustion under the condition of air capacity deficiency, generate the high temperature low-heat value gas containing fuel gas such as carbon monoxide, hydrogen, methane.
Simultaneously, adopt the tangential jetting device 5 of catalyst to spray into the catalyst such as water vapour on the top of body of heater 100, with red-hot carbon generation pyrolytic reaction, generate hydrogen and oxygen, oxygen voluntarily needed for supply portion burning, hydrogen participates in burning, to make the surrounding formation catalytic pyrolysis section B of the tangential jetting device 5 of catalyst.The sidewall being evenly distributed in body of heater 100 of the tangential jetting device 5 of catalyst, (catalyst generally adopts afterheat steam can tangentially to spray into catalyst, decomposed by steam at specific temperature spot, the steam part after decomposition directly participates in burning, the burning of another part tissue.Greatly reduce the generation that condition that coal consumption also realizes low-temperature burning simultaneously controls nitride.)
At this swirl flow combustion section A, high temperature secondary wind fully mixes high speed oxygen enrichment low nitrogen burning further, and forms certain eddy current and flow-disturbing, extends the burning time of unburnt carbon residue further, make it Thorough combustion, by high speed centrifugation power, ashes and residue are dropped to the bottom of body of heater 100 simultaneously.
Pure high-temperature flue gas after depositing dust and part imflammable gas, through mixed combustion ejiction opening 8 again full and uniform with air mix after flameless combustion.High-temperature flue gas and mixed imflammable gas spray into Industrial Boiler, stove burner hearth burns completely.Mixed combustion ejiction opening 8 is circular, and inner side is built exotic material.
In whole combustion process, the material lime-ash major part of powder combustion forms dry powder, is partly agglomerated as solid granulates slag.Fall after bottom combustion furnace and discharged by slag remover.
The stage casing of body of heater 100 also offers tertiary air entrance 3, and tertiary air can be made evenly to spray in stove.Meanwhile, the air in air channel is heated by furnace wall, the air after preheating further with the powder granule fuel combustion of last after-flame, and make it partial gasification, again high-temperature flue gas is rotated and stop, form suspension dedusting section C, powder fuel gas slag is separated, and lime-ash drops to the bottom of body of heater 100.Generally, the bottom of body of heater 100 offers except cinder notch 9, for the residue of regularly discharging in body of heater 100.The inwall of body of heater 100 is equipped with refractory masses.
Furnace design of the present invention is unique, and swirl flow combustion section A, catalytic pyrolysis section B, suspension dedusting section C have unique structure and reactive flowfield.First air, Secondary Air, tertiary air coupling rationally, burn rapidly after powder fuel in swirl flow combustion section A and air Homogeneous phase mixing, at catalytic pyrolysis section B, the fugitive constituent of powder fuel, hydrogen, methane are separated out, in the catalyst cracking that catalytic pyrolysis section will spray into, produce hydrogen and oxygen participation burning, low-grade carbon has been displaced high-grade hydrogen and oxygen.
Powder fuel and flue gas are by First air and Secondary Air, fully the curling up of tertiary air, and ensure that powder fuel and catalyst have sufficient stop, reaction time, the burn-off rate of therefore powder burning is up to more than 98%.
Regulate primary and secondary air, tertiary air and pass into the catalyst such as high-temperature steam, except oxygen-enriched combusting is carried out in oxygen supply voluntarily, reduce outside air introduction volume, also control the reaction temperature in swirl flow combustion section A and catalytic pyrolysis section B, most of powder fuel lime-ash is made to become solid powder or reunion slag to discharge, retention efficiency is reaching 90%, and the high-temperature flue gas or the combustion gas that spray into burner hearth are relatively clean, to reduce the drawback and trouble that the frequent dedusting of equipment etc. brings.
By regulating for powder fuel amount, catalytic amount, one, two, three wind air quantity etc., can adapt to the thermic load change of the change of powder fuel kind and combustion furnace.This combustion furnace can use the fuel such as various coal dust, biomass powder, coke blacking.
Available water-cooled outside the furnace wall of this device, installs water jacket additional and produces water vapour, or use of being heated by water preheat, or is input in steam raising plant.Also without water-cooled, the method that outer wall is incubated can be taked, reduce heat loss.So this device combustion furnace heat loss is low, the thermal efficiency is up to more than 95%.
The W-response temperature of swirl flow combustion section A and catalytic pyrolysis section B controls within the scope of 750 DEG C ~ 1000 DEG C, adopts fuel stratification burning, NO in combustion product simultaneously
xcontent is low.Because the cracking of catalyst produces hydrogen and oxygen, instead of part carbon fuel and air, reduce further NO
xgeneration.Hydrogen reacts with other emissions under worst hot case simultaneously, decreases the generation of its harmful components.Therefore pollution on the environment has greatly improved.
The combustion furnace of the present embodiment can also comprise: frequency conversion type fuel atomizer; Described frequency conversion type fuel atomizer and described fuel mix spout 4 connect.Frequency conversion type fuel atomizer adopts frequency conversion type motor to drive can according to combustion case fair supply fuel.
The outer wall of body of heater 100 is provided with annular wind channel, and described annular wind channel is connected with described First air mouth blown 1 and/or Secondary Air gateway 2.Air in annular wind channel is heated by furnace wall, and the air after preheating can play the effect improving efficiency of combustion, and furnace wall can be protected not damaged by too high temperature.
On the basis of above-described embodiment, the internal diameter M of fuel mix spout 4 is 1: 4.2 with the internal diameter N ratio of body of heater 100; Distance between First air mouth blown 1 and Secondary Air mouth blown 2 is that L, L are between 120-210mm.Under this internal diameter ratio and air port distance, more meet condition and the requirement of coal dust diffusion type rotary combustion, effective wind coal can be made fully to mix the contact of carbon and oxygen, the thermal efficiency of coal dust firing is improved greatly.
Must accurately control for realizing above object, this combustion furnace adopts intelligence control system, and the top of body of heater 100 is provided with the first flame detector 21; The bottom of body of heater 100 is provided with the second flame detector 22.First flame detector 21 is all connected with control system with the second flame detector 22.Simultaneously, at all kinds of detection, checkout equipments such as combustion furnace and corollary equipment system each end points reload temperature, pressure, flows, by real-time data transmission to control system, Based Intelligent Control is carried out by system, to ensure the optimization of combustion efficiency, this combustion furnace bond networking can realize remote monitoring and operation under cloud plateform system simultaneously.
Combustion furnace model of the present invention can be designed to Multiple Type, from 100KG powder fuel/h-20000KG powder fuel/h, the clean burning system be made up of multiple combustion furnace can also be formed, be widely used in the industrial furnace such as industrial steam and hot-water boiler, tunnel cave, cement kiln, roller kilns.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (9)
1. a powder fuel hydrogenation confession oxygen-fired furnace, is characterized in that, comprising: body of heater; Described body of heater is vertical and cylindrical structure; The top of described body of heater offers for making powder fuel vertically be blown into fuel mix spout in body of heater; The inwall of described fuel mix spout also offers First air mouth blown and Secondary Air mouth blown from top to bottom; Described First air mouth blown and described Secondary Air mouth blown are all arranged at the inwall of described fuel mix spout, to make First air and Secondary Air being tangentially blown into all along described fuel mix spout inwall;
The epimere of described body of heater is provided with multiple tangential jetting device of catalyst for being sprayed into by catalyst in body of heater;
The stage casing of described body of heater also offers tertiary air entrance, and described tertiary air entrance is arranged at the inwall of described body of heater, to make tertiary air being tangentially blown into along described inboard wall of furnace body;
The sidewall of described body of heater offers mixed combustion ejiction opening, and described mixed combustion ejiction opening is positioned at the bottom of described body of heater.
2. powder fuel hydrogenation confession oxygen-fired furnace according to claim 1, it is characterized in that, the bottom of described body of heater offers except cinder notch.
3. powder fuel hydrogenation confession oxygen-fired furnace according to claim 1, it is characterized in that, the internal diameter of described fuel mix spout is 1: 4.2 with the internal diameter ratio of described body of heater.
4., according to claim 1-3 arbitrary described powder fuel hydrogenation confession oxygen-fired furnace, it is characterized in that, described combustion furnace also comprises: frequency conversion type fuel atomizer; Described frequency conversion type fuel atomizer and described fuel mix spout connect.
5., according to claim 1-3 arbitrary described powder fuel hydrogenation confession oxygen-fired furnace, it is characterized in that, the inwall of described body of heater is equipped with refractory masses.
6., according to claim 1-3 arbitrary described powder fuel hydrogenation confession oxygen-fired furnace, it is characterized in that, the outer wall of described body of heater is provided with annular wind channel, described annular wind channel is connected with described First air mouth blown and/or Secondary Air gateway.
7., according to claim 1-3 arbitrary described powder fuel hydrogenation confession oxygen-fired furnace, it is characterized in that, the distance between described First air mouth blown and described Secondary Air mouth blown is 120-210mm.
8., according to claim 1-3 arbitrary described powder fuel hydrogenation confession oxygen-fired furnace, it is characterized in that, the top of described body of heater is provided with the first flame detector; The bottom of described body of heater is provided with the second flame detector.
9., according to claim 1-3 arbitrary described powder fuel hydrogenation confession oxygen-fired furnace, it is characterized in that, the First air air coefficient that described First air mouth blown is blown into is between 0.40 ~ 0.96.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510044299.5A CN104633653A (en) | 2015-01-29 | 2015-01-29 | Powder fuel hydrogenation and self-oxygen supply combustion furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510044299.5A CN104633653A (en) | 2015-01-29 | 2015-01-29 | Powder fuel hydrogenation and self-oxygen supply combustion furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104633653A true CN104633653A (en) | 2015-05-20 |
Family
ID=53212701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510044299.5A Pending CN104633653A (en) | 2015-01-29 | 2015-01-29 | Powder fuel hydrogenation and self-oxygen supply combustion furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104633653A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442260A (en) * | 2020-03-24 | 2020-07-24 | 中国神华能源股份有限公司国华电力分公司 | Coal combustion system and method for industrial boiler |
-
2015
- 2015-01-29 CN CN201510044299.5A patent/CN104633653A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442260A (en) * | 2020-03-24 | 2020-07-24 | 中国神华能源股份有限公司国华电力分公司 | Coal combustion system and method for industrial boiler |
| CN111442260B (en) * | 2020-03-24 | 2022-11-08 | 中国神华能源股份有限公司国华电力分公司 | Coal combustion system and method for industrial boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202012913U (en) | Novel flue gas self-reflux low-oxygen combustor | |
| CN207455621U (en) | A kind of lower heat of combustion coal gas obtains the high effective flue gas furnace apparatus of high wind-warm syndrome | |
| CN101737795B (en) | Biomass gasification boiler using air-steam as gasifying agent and coupling combustion method thereof | |
| CN101666489A (en) | Combustion device of petroleum coke slurry | |
| CN101839473A (en) | Flue gas recirculation high temperature air energy-saving and environmental protection combustion technology | |
| CN105737140B (en) | Cyclone combustion device, combustion equipment and combustion method | |
| CN107043639B (en) | Axial counter-flow type straw chopping coupling purification hydrogen-rich gasification stove | |
| CN102777890B (en) | Biomass fuel boiler | |
| CN201014454Y (en) | Vertical life refuse incinerator | |
| CN210463572U (en) | Semi-gasification biomass combustion hot blast stove | |
| CN218879751U (en) | Central burner type lime kiln | |
| CN208059287U (en) | Multifunctional vertical pulverized coal hot air furnace | |
| CN104633653A (en) | Powder fuel hydrogenation and self-oxygen supply combustion furnace | |
| CN105650618A (en) | Water gas production and combustion integrated combustion method and equipment | |
| CN204420988U (en) | Powder fuel hydrogenation confession oxygen-fired furnace | |
| CN213713087U (en) | Carbon-containing fly ash combustion system | |
| CN102798129A (en) | Efficient thermal oxidation furnace for low afterburning-amount smoke constant-speed grading reaction | |
| CN201014522Y (en) | Stove for implementing granular fuel complete combustion | |
| CN209081823U (en) | A kind of flue gas recirculation fluidized bed type biomass gasification furnace | |
| CN203249237U (en) | Spiral-input type pulverized coal burner | |
| CN202521589U (en) | Horizontally-blown heat energy generator for solid fuels | |
| CN203224118U (en) | Clay mineral powder drying hot air preparation device | |
| CN205710615U (en) | The pulverized coal gasification furnace that a kind of preheated air enters with eddy flow | |
| CN100494776C (en) | Adequate and clean combustion equipment | |
| CN105115312A (en) | Method for utilizing kiln flue gas to perform secondary mixed combustion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |
|
| WD01 | Invention patent application deemed withdrawn after publication |