CN103013574A - Water-coal-slurry nozzle - Google Patents
Water-coal-slurry nozzle Download PDFInfo
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- CN103013574A CN103013574A CN2012104891398A CN201210489139A CN103013574A CN 103013574 A CN103013574 A CN 103013574A CN 2012104891398 A CN2012104891398 A CN 2012104891398A CN 201210489139 A CN201210489139 A CN 201210489139A CN 103013574 A CN103013574 A CN 103013574A
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Abstract
The invention discloses a water-coal-slurry nozzle, which comprises a fuel gas pipe, a first oxygen pipe, a water-coal-slurry pipe, a second oxygen pipe and a cooling pipe, wherein a fuel gas channel is formed in the fuel gas pipe; an ignition mechanism is arranged in the fuel gas channel; the first oxygen pipe is sleeved outside the fuel gas pipe, so that an annular first oxygen channel is defined between the first oxygen pipe and a fuel gas pipe; the water-coal-slurry pipe is sleeved outside the first oxygen pipe, so that an annular water-coal-slurry channel is defined between the water-coal-slurry pipe and the first oxygen pipe; the second oxygen pipe is sleeved outside the water-coal-slurry pipe, so that an annular second oxygen channel is defined between the second oxygen pipe and the water-coal-slurry pipe; and the cooling pipe is sleeved outside the second oxygen pipe, so that an annular cooling channel is defined between the cooling pipe and the second oxygen pipe. According to the water-coal-slurry nozzle, by adoption of a combined structure, the water-coal-slurry nozzle has an ignition function and is simple in structure and long in service life.
Description
Technical field
The present invention relates to the Coal Gasification Technology field, especially relate to a kind of coal water slurry burner.
Background technology
The burner function singleness of traditional coal slurry gasifier, generally need two burners to drive to prepare, increased the quantity of burner on the coal slurry gasifier, and traditional burner cooling system is complicated, but cooling performance is bad, life-span is generally shorter, and synthetic gas can not satisfy the requirement of vapourizing furnace safe and continuous operation easily to the cooling system leakage.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.For this reason, one object of the present invention is to propose a kind of coal water slurry burner, and described coal water slurry burner has the function that goes into operation of lighting a fire, and simple in structure, long service life.
According to coal water slurry burner of the present invention, comprising: fuel gas pipe, have the fuel gas passage in the described fuel gas pipe, be provided with ignition mechanism in the described fuel gas passage; The first oxygen hose, described the first oxygen hose are set in the outside of described fuel gas pipe to limit the first oxygen channel of annular between described the first oxygen hose and described fuel gas pipe; Water-coal slurry pipe, described water-coal slurry pipe are set in the outside of described the first oxygen hose to limit the coal water slurry passage of annular between described water-coal slurry pipe and described the first oxygen hose; The second oxygen hose, described the second oxygen hose are set in the outside of described water-coal slurry pipe to limit the second oxygen channel of annular between described the second oxygen hose and described water-coal slurry pipe; And cooling tube, described cooling tube is set in the outside of described the second oxygen hose to limit the cooling channel of annular between described cooling tube and described the second oxygen hose.
Adopt integrated structure according to coal water slurry burner of the present invention, integrated fuel gas pipe, the first and second oxygen hoses, water-coal slurry pipe and cooling tube are in one, can independently light a fire goes into operation, and satisfies processing requirement, thereby can reduce the burner number of coal slurry gasifier, and, only pass into a kind of medium in each pipeline of coal water slurry burner of the present invention, do not interfere with each other and good airproof performance, stable, can satisfy the requirement of coal slurry gasifier safe and continuous operation, thereby enhance productivity.
In addition, according to coal water slurry burner of the present invention, can also have following additional technical feature:
In some embodiments of the invention, the lower end of described cooling tube and the lower end of described the second oxygen hose link to each other to seal the lower end of described cooling channel.
In some embodiments of the invention, be provided with isolated tube between described cooling tube and described the second oxygen hose, described isolated tube is isolated into the water entry of annular and the water exit of annular with described cooling channel, and described water exit is communicated with the lower end of described water entry.
In some embodiments of the invention, the described water entry outside wall surface that is positioned at inboard and described second oxygen hose of described water exit is provided with a plurality of radiating pieces for heat radiation.Can cool off the coal water slurry burner more fully like this, reduce the temperature of burner, guarantee that burner moves continuously.
In some embodiments of the invention, described coal water slurry burner also comprises closure member, and the lower end of described cooling tube links to each other with described closure member respectively with the lower end of described the second oxygen hose.
In some embodiments of the invention, the lower surface of described coal water slurry passage extends beyond lower surface first predetermined distance of described fuel gas passage and described the first oxygen channel downwards.
In some embodiments of the invention, the lower surface of described the first oxygen channel extends beyond lower surface second predetermined distance of described fuel gas passage downwards, and the lower surface of described the second oxygen channel extends beyond lower surface the 3rd predetermined distance of described coal water slurry passage downwards, and the described second and the 3rd predetermined distance is less than described the first predetermined distance.
In some embodiments of the invention, the lower end of described fuel gas pipe is sealed by end plug, and described end plug is provided with described fuel gas channel connection and runs through the fuel gas jet hole of this end plug.
In some embodiments of the invention, the radial dimension of the lower end of described the first oxygen channel is less than the radial dimension of the rest part of described the first oxygen channel.Thus, can improve the oxygen of ejection in the first oxygen channel and the mixed effect of the interior combustible gas that sprays of fuel gas passage.
In some embodiments of the invention, the radial dimension of the lower end of described coal water slurry passage is less than the radial dimension of the rest part of described coal water slurry passage, and the radial dimension of the lower end of described the second oxygen channel is less than the radial dimension of the rest part of described the second oxygen channel.Thus, at the head end of coal water slurry burner, coal water slurry can with the abundant mixed firing of oxygen, thereby improve the transformation efficiency of carbon in the coal water slurry.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the partial schematic diagram of coal water slurry burner according to an embodiment of the invention.
Embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein identical or similar label represents identical or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center "; " vertically "; " laterally "; " length "; " width "; " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only be for convenience of description the present invention and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless clear and definite concrete restriction is arranged in addition.
In the present invention, unless clear and definite regulation and restriction are arranged in addition, broad understanding should be done in the terms such as term " installation ", " linking to each other ", " connection ", " fixing ", for example, can be to be fixedly connected with, and also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can indirectly link to each other by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless clear and definite regulation and restriction are arranged in addition, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, can comprise that also the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that the First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under the Second Characteristic and tiltedly, or only represent that the First Characteristic level height is less than Second Characteristic.
Below with reference to the coal water slurry burner 100 of Fig. 1 description according to the embodiment of the invention.
Coal water slurry burner 100 comprises fuel gas pipe 1, the first oxygen hose 2, water-coal slurry pipe 3, the second oxygen hose 4 and cooling tube 5 according to an embodiment of the invention.
As shown in Figure 1, have fuel gas passage 11 in the fuel gas pipe 1, fuel gas passage 11 has fuel gas import (scheming not shown) and fuel gas outlet 111, for example in the example of Fig. 1, fuel gas outlet 111 can be formed on the lower end (that is, ejection end) of fuel gas pipe 1.Fuel gas pipe 1 passes into combustible gas to finish ignition operation in 100 igniting of coal water slurry burner when going into operation, combustible gas can be Sweet natural gas, can certainly be other inflammable gas.Be provided with ignition mechanism in the fuel gas passage 11.
As shown in Figure 1, the first oxygen hose 2 is set in the outside of fuel gas pipe 1 to limit the first oxygen channel 21 of annular between the first oxygen hose 2 and fuel gas pipe 1, the first oxygen channel 21 has the first oxygen inlet (scheming not shown) and the first oxygen outlet 211, for example in the example of Fig. 1, the first oxygen outlet 211 can be formed on the lower end of the first oxygen hose 2.The first oxygen channel 2 can pass into purity oxygen when 100 igniting of coal water slurry burner, can certainly pass into oxygen enrichment or air.
As shown in Figure 1, water-coal slurry pipe 3 is set in the outside of the first oxygen hose 2 to limit the coal water slurry passage 31 of annular between water-coal slurry pipe 3 and the first oxygen hose 2, coal water slurry passage 31 has coal water slurry import (scheming not shown) and coal water slurry outlet 311, for example in the example of Fig. 1, coal water slurry outlet 311 can be formed on the lower end of water-coal slurry pipe 3, and coal water slurry passage 31 passes into coal water slurry after coal water slurry burner 100 goes into operation.
As shown in Figure 1, the second oxygen hose 4 is set in the outside of water-coal slurry pipe 3 to limit the second oxygen channel 41 of annular between the second oxygen hose 4 and water-coal slurry pipe 3, the second oxygen channel 41 has the second oxygen inlet (scheming not shown) and the second oxygen outlet 411, for example in the example of Fig. 1, the second oxygen outlet 411 can be formed on the lower end of the second oxygen hose 4.The second oxygen channel 41 provides the oxygen for the coal water slurry burning after coal water slurry burner 100 goes into operation, preferably, can pass into purity oxygen in the second oxygen channel 41 to improve the transformation efficiency of carbon in the coal water slurry, and, pass into purity oxygen and also can avoid the impurity that contains in the gas on the impact of carbon transformation efficiency.Certainly, alternatively, also oxygen enrichment or air can be passed in the second oxygen channel 41, cost can be effectively reduced thus.
As shown in Figure 1, cooling tube 5 is set in the outside of the second oxygen hose 4 to limit the cooling channel 51 of annular between cooling tube 5 and the second oxygen hose 4, cooling channel 51 has water-in (scheming not shown) and water outlet (scheming not shown), can pass into cooling fluid in the cooling channel 51 so that coal water slurry burner 100 is cooled off, cooling fluid can be water, in other words, coal water slurry burner 100 can adopt the mode of water-cooled to cool off.
In brief, coal water slurry burner 100 from inside to outside is followed successively by fuel gas pipe 1, the first oxygen hose 2, water-coal slurry pipe 3, the second oxygen hose 4 and cooling tube 5.During 100 igniting of coal water slurry burner, pass into inflammable gas in the fuel gas pipe 1, simultaneously the first oxygen hose 2 can in pass into purity oxygen, oxygen enrichment or air, the ignition device of coal water slurry burner 100, after igniting goes into operation, coal water slurry is passed in the coal water slurry passage 31, the second oxygen hose 2 interior purity oxygens that preferably pass into, the head end combustion reactions generation main component at coal water slurry burner 100 after coal water slurry is mixed with this purity oxygen is the gas mixture of carbon monoxide and hydrogen.
During 100 igniting of coal water slurry burner, be preferably in the first oxygen hose 2 and pass into purity oxygen, oxygen enrichment or air, do not pass into gas in the second oxygen hose 4, igniting preferably stops to pass into purity oxygen, oxygen enrichment or air in the first oxygen hose 2 after finishing, and pass in the second oxygen hose 4 purity oxygen, oxygen enrichment or air with coal water slurry mixed firing.
Coal water slurry burner 100 according to the embodiment of the invention adopts integrated structure, integrated fuel gas pipe 1, the first and second oxygen hoses, water-coal slurry pipe 3 and cooling tube 5 are in one, can independently light a fire goes into operation, and satisfies processing requirement, thereby can reduce the burner number of coal slurry gasifier, and, only pass into a kind of medium in coal water slurry burner 100 each pipeline of the present invention, do not interfere with each other and good airproof performance, stable, can satisfy the requirement of coal slurry gasifier safe and continuous operation, thereby enhance productivity.
In addition, can be applicable to atmospheric gasification technique and pressure gasification process according to the coal water slurry burner 100 of the embodiment of the invention, and can satisfy the continuous operating requirement without the coal slurry gasifier of pressure and load.
In one embodiment of the invention, coal water slurry burner 100 also comprises closure member 7, and the lower end of cooling tube 5 links to each other with closure member 7 respectively with the lower end of the second oxygen hose 4, thereby seals the lower end of cooling tube 5 and the second oxygen hose 4, namely seals the lower end of cooling channel 51.Certainly, the present invention is not limited to this, in another embodiment of the present invention, the lower end of cooling tube 5 links to each other with the lower end of the second oxygen hose 4 with the lower end of sealing cooling channel 51, in other words, in this embodiment, cooling tube 5 can with the 4 whole processing and manufacturings of the second oxygen hose.
As shown in Figure 1, be provided with isolated tube 6 between cooling tube 5 and the second oxygen hose 4, isolated tube 6 is isolated into the water entry 511 of annular and the water exit 512 of annular with cooling channel 51, and water exit 512 is communicated with to realize for example water circuit of cooling fluid with the lower end of water entry 511.Preferably, water entry 511 is positioned at the inboard of water exit 512, can cool off coal water slurry burner 100 more fully like this, reduces the temperature of burner, guarantees that burner moves continuously.More preferably, the outside wall surface of the second oxygen hose 4 is provided with for example radiating fin (scheming not shown) of a plurality of radiating pieces for dispelling the heat, each radiating fin all extend in the water entry 511 with the interior cooling fluid of this passage for example water fully contact, thereby further improved cooling performance to burner.
Wherein fin is preferably made by the good conductor of heat, and for example fin can select metallic substance to make, and such as silver, copper or aluminium, in order to reduce adult, fin can be soldered on the outside wall surface of the second oxygen hose 4.
In some embodiments of the invention, the lower surface of coal water slurry passage 31 extends beyond lower surface first predetermined distance of fuel gas passage 11 downwards, and this first predetermined distance can be set according to pressure or the load of different coal slurry gasifiers.
Preferably, as shown in Figure 1, the lower surface of the first oxygen channel 21 extends beyond lower surface second predetermined distance of fuel gas passage 11 downwards, thus, inflammable gas in the fuel gas passage 11 can fully mix with the oxygen of the first oxygen channel 21 exit end at exit end, and convenient igniting goes into operation.Similarly, the lower surface of the second oxygen channel 41 extends beyond lower surface second predetermined distance of coal water slurry passage 31 downwards, thus, after can fully mixing with the oxygen of the second oxygen channel 41 exit end from the coal water slurry of coal water slurry passage 31 interior outflows, head at coal water slurry burner 100 fully burns, thereby improves the transformation efficiency of carbon in the coal water slurry.
Be understandable that, the first predetermined distance, the second predetermined distance and the 3rd predetermined distance can be set according to requirement or the different coal slurry gasifier of gasifying process, in other words, can pass through to change the size of at least one pipe in fuel gas pipe 1, the first oxygen hose 2, water-coal slurry pipe 3 and the second oxygen hose 4, thereby satisfy atmospheric gasification technique, pressure gasification process or have the processing requirement of the coal slurry gasifier of different pressures, load.
In preferred embodiments more of the present invention, the radial dimension of the lower end of the first oxygen channel 11 is less than the radial dimension of the rest part of the first oxygen channel 11.For example, the first oxygen channel 11 can comprise hypomere and epimere and be connected to this hypomere and this epimere between transition section, wherein hypomere size diametrically is minimum, and epimere size diametrically is maximum, and transition section size diametrically is between hypomere radial dimension and epimere radial dimension.Thus, can improve the mixed effect of the combustible gas of the oxygen of the first oxygen channel 11 interior ejections and the 11 interior ejections of fuel gas passage.
In preferred embodiments more of the present invention, the radial dimension of the lower end of coal water slurry passage 31 is less than the radial dimension of the rest part of coal water slurry passage 31, and the radial dimension of the lower end of the second oxygen channel 41 is less than the radial dimension of the rest part of the second oxygen channel 41.Be understandable that, the structure of coal water slurry passage 31 and the second oxygen channel 41 can be identical with the first above-mentioned oxygen channel 11, namely also comprises the hypomere of radial dimension minimum, epimere and the transition section of radial dimension between epimere and hypomere of radial dimension maximum.Thus, at the head end of coal water slurry burner 100, coal water slurry can with the abundant mixed firing of oxygen, thereby improve the transformation efficiency of carbon in the coal water slurry.
The mixed effect of combustible gas and oxygen during for further raising ignition operation, preferably, the lower end of fuel gas pipe 1 is by end plug 8 sealings, and end plug 8 is provided with the fuel gas jet hole that is communicated with and runs through this end plug 8 with fuel gas passage 11.
As shown in Figure 1, coal water slurry burner according to the embodiment of the invention, in order to strengthen bulk strength, between the first oxygen hose 2 and water-coal slurry pipe 3 and between water-coal slurry pipe 3 and the second oxygen hose 4, can arrange respectively and be connected strut member, the lower end of the contiguous coal water slurry burner of described connection strut member.
Coal water slurry burner 100 according to the embodiment of the invention has following advantage: 1) simple in structure, and long service life; 2) possess ignition function, can reduce the quantity of gasifier nozzle; 3) only pass into a kind of medium in each pipe passage, good airproof performance, medium are difficult for leaking; 4) applied widely, can be applicable to the coal slurry gasifier of atmospheric gasification technique, pressure gasification process and different pressures, load.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or the example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment in the situation that does not break away from principle of the present invention and aim, scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. a coal water slurry burner is characterized in that, comprising:
Fuel gas pipe has the fuel gas passage in the described fuel gas pipe, be provided with ignition mechanism in the described fuel gas passage;
The first oxygen hose, described the first oxygen hose are set in the outside of described fuel gas pipe to limit the first oxygen channel of annular between described the first oxygen hose and described fuel gas pipe;
Water-coal slurry pipe, described water-coal slurry pipe are set in the outside of described the first oxygen hose to limit the coal water slurry passage of annular between described water-coal slurry pipe and described the first oxygen hose;
The second oxygen hose, described the second oxygen hose are set in the outside of described water-coal slurry pipe to limit the second oxygen channel of annular between described the second oxygen hose and described water-coal slurry pipe; And
Cooling tube, described cooling tube are set in the outside of described the second oxygen hose to limit the cooling channel of annular between described cooling tube and described the second oxygen hose.
2. coal water slurry burner according to claim 1 is characterized in that, the lower end of described cooling tube and the lower end of described the second oxygen hose link to each other to seal the lower end of described cooling channel.
3. coal water slurry burner according to claim 2, it is characterized in that, be provided with isolated tube between described cooling tube and described the second oxygen hose, described isolated tube is isolated into the water entry of annular and the water exit of annular with described cooling channel, and described water exit is communicated with the lower end of described water entry.
4. coal water slurry burner according to claim 3 is characterized in that, the outside wall surface inboard and described the second oxygen hose that described water entry is positioned at described water exit is provided with a plurality of radiating pieces for heat radiation.
5. coal water slurry burner according to claim 2 is characterized in that, also comprises closure member, and the lower end of described cooling tube links to each other with described closure member respectively with the lower end of described the second oxygen hose.
6. coal water slurry burner according to claim 1 is characterized in that, the lower surface of described coal water slurry passage extends beyond lower surface first predetermined distance of described fuel gas passage and described the first oxygen channel downwards.
7. the coal water slurry burner described in according to claim 6, it is characterized in that, the lower surface of described the first oxygen channel extends beyond lower surface second predetermined distance of described fuel gas passage downwards, and the lower surface of described the second oxygen channel extends beyond lower surface the 3rd predetermined distance of described coal water slurry passage downwards, and the described second and the 3rd predetermined distance is less than described the first predetermined distance.
8. coal water slurry burner according to claim 1 is characterized in that, the lower end of described fuel gas pipe is sealed by end plug, and described end plug is provided with described fuel gas channel connection and runs through the fuel gas jet hole of this end plug.
9. each described coal water slurry burner is characterized in that the radial dimension of the lower end of described the first oxygen channel is less than the radial dimension of the rest part of described the first oxygen channel according to claim 1-8.
10. each described coal water slurry burner according to claim 1-8, it is characterized in that, the radial dimension of the lower end of described coal water slurry passage is less than the radial dimension of the rest part of described coal water slurry passage, and the radial dimension of the lower end of described the second oxygen channel is less than the radial dimension of the rest part of described the second oxygen channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104891398A CN103013574A (en) | 2012-11-26 | 2012-11-26 | Water-coal-slurry nozzle |
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| CN2012104891398A CN103013574A (en) | 2012-11-26 | 2012-11-26 | Water-coal-slurry nozzle |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103305284A (en) * | 2013-05-30 | 2013-09-18 | 杭州浙南压缩机有限公司 | High-strength gasifier process burner |
| CN103849434A (en) * | 2014-03-13 | 2014-06-11 | 杜建吉 | Combined type coal water slurry nozzle provided with ignition device |
| CN103881760A (en) * | 2014-01-26 | 2014-06-25 | 西安交通大学 | Novel micro-channel circularly cooling gasification process nozzle |
| CN104513676A (en) * | 2014-12-25 | 2015-04-15 | 清华大学 | Gasification furnace capable of gasifying coal with high ash fusion point |
| CN106987282A (en) * | 2017-05-05 | 2017-07-28 | 北京清创晋华科技有限公司 | A kind of gasification furnace four-way ignition system and operation method |
| CN107033971A (en) * | 2016-02-04 | 2017-08-11 | 清华大学煤燃烧工程研究中心 | Multichannel combination burner and coal slurry gasifier for coal slurry gasifier |
| CN108690662A (en) * | 2018-06-25 | 2018-10-23 | 新奥科技发展有限公司 | Starch coupled gasification stove burner and starch coupled gasification method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103881760A (en) * | 2014-01-26 | 2014-06-25 | 西安交通大学 | Novel micro-channel circularly cooling gasification process nozzle |
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| CN103849434A (en) * | 2014-03-13 | 2014-06-11 | 杜建吉 | Combined type coal water slurry nozzle provided with ignition device |
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| CN107033971A (en) * | 2016-02-04 | 2017-08-11 | 清华大学煤燃烧工程研究中心 | Multichannel combination burner and coal slurry gasifier for coal slurry gasifier |
| CN106987282A (en) * | 2017-05-05 | 2017-07-28 | 北京清创晋华科技有限公司 | A kind of gasification furnace four-way ignition system and operation method |
| CN106987282B (en) * | 2017-05-05 | 2022-09-23 | 北京清创晋华科技有限公司 | Four-channel ignition system of gasification furnace and operation method |
| CN108690662A (en) * | 2018-06-25 | 2018-10-23 | 新奥科技发展有限公司 | Starch coupled gasification stove burner and starch coupled gasification method |
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Application publication date: 20130403 |