CN103820161A - Gasification chamber with top-mounted nozzle and gasification furnace with same - Google Patents
Gasification chamber with top-mounted nozzle and gasification furnace with same Download PDFInfo
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- CN103820161A CN103820161A CN201210465711.7A CN201210465711A CN103820161A CN 103820161 A CN103820161 A CN 103820161A CN 201210465711 A CN201210465711 A CN 201210465711A CN 103820161 A CN103820161 A CN 103820161A
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- 238000002309 gasification Methods 0.000 title claims abstract description 29
- 239000011819 refractory material Substances 0.000 claims abstract description 6
- 239000006200 vaporizer Substances 0.000 claims description 60
- 239000007789 gas Substances 0.000 claims description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 230000015572 biosynthetic process Effects 0.000 claims description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 17
- 229910052760 oxygen Inorganic materials 0.000 claims description 17
- 239000001301 oxygen Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 15
- 238000003786 synthesis reaction Methods 0.000 claims description 15
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 11
- 235000011089 carbon dioxide Nutrition 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 241000272525 Anas platyrhynchos Species 0.000 claims description 7
- 238000005034 decoration Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 21
- 238000006243 chemical reaction Methods 0.000 abstract description 21
- 229910052799 carbon Inorganic materials 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 25
- 230000003134 recirculating effect Effects 0.000 description 8
- 239000002245 particle Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 206010020843 Hyperthermia Diseases 0.000 description 3
- 230000036031 hyperthermia Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003250 coal slurry Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
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Abstract
The invention relates to a gasification chamber and gasification furnace with a top-mounted main nozzle, wherein the gasification furnace comprises: the gasification furnace comprises a furnace body shell, a gasification chamber arranged on the upper part in the shell, a chilling chamber arranged on the lower part in the shell, a slag discharging port arranged at the bottom of the gasification furnace and a synthetic gas outlet arranged on the side wall of the lower part of the gasification furnace, wherein the gasification chamber comprises a main nozzle arranged at the center of the top of the gasification furnace and a top auxiliary nozzle arranged at the top or/and a top conical section or/and a side wall auxiliary nozzle arranged on the side wall of a straight section, and the inner wall can be an inner wall formed by refractory materials or a composite inner wall formed by a water-. By the combined control of the main nozzle and the auxiliary nozzle, the effects of optimizing the flow field layout in the furnace, improving the effective retention time, improving the carbon conversion rate and reducing the local overtemperature of the wall surface are achieved.
Description
Affiliated technical field
Vapourizing furnace, the especially one that the present invention relates to the nozzle overhead type vaporizer in a kind of coal gasification field and contain it is applicable to nozzle overhead type vaporizer and the vapourizing furnace thereof of " the narrow viscosity-temperature characteristics of low ash " and " high ash, high ash melting point " typical kinds of coals for gasification.
Background technology
The rich coal resources of China, but ature of coal mostly is low grade coal, and therefore the owner of China wishes to gasify more low grade coal to reduce costs more.Wherein typical representational two classes are: 1) the narrow viscosity-temperature characteristics coal of low ash, and fecund is from the area such as the Inner Mongol, Xinjiang, and ash oontent is lower than 10%, and ash fusion point is low, and approximately 1200 ℃, the viscosity-temperature characteristics of ash content are poor, i.e. viscosity with temperature sensitive.2) high grey high-ash-fusion coal fecund is from Jincheng, Shanxi area, some areas, Yunnan-Guizhou etc., and the highest ash content reaches more than 35%, and volatile matter is low, and ash fusion point is high, is greater than 1500 ℃.Coal characteristic has affected its gasification property in vapourizing furnace.
Nozzle overhead type airflow bed gasification furnace is as Texaco stove, space flight stove etc., comprise: body of heater shell, superposed vaporizer is in the enclosure set and is positioned at the shock chamber of bottom, be positioned at the slag-drip opening of vapourizing furnace bottom, be positioned at the syngas outlet of vapourizing furnace lower sides, there is compact construction, installation and the advantage such as easy and simple to handle, can regulate Flow Field Distribution by flow and the spray angle of adjusting material simultaneously, thereby realize the controllability of flame.But in the time carrying out the gasification of above typical coal, the regulation range of the overhead nozzle relative deficiency that just seems, the anti-fluctuation ability of vapourizing furnace declines.
For the narrow viscosity-temperature characteristics coal of low ash, the viscosity temperature response of lime-ash is too responsive, in the time there is ature of coal or flow rate fluctuation, wall is difficult for forming stablizes slag blanket, the easy overtemperature of vaporizer inner-wall surface, therefore generally takes to reduce the method for service temperature in operation, but the problem of bringing is, temperature reduces carbon speed of reaction and declines, and causes and reacts incomplete, efficiency of carbon conversion decline.
For the coal of the grey high ash melting point of height, need to guarantee that forming section slag is to reduce the burden of pulp water system because ash amount is larger, and ash fusion point is higher, therefore must improve burner hearth service temperature, but in the situation that furnace temperature is higher, in case of furnace wall regional area overtemperature easily appears in ature of coal or flow rate fluctuation.In addition, because ash contents a large amount of in coal particle has played inhibition to the reaction of carbon, make carbon speed of response slow, in limited gasification volume, can not reach high transformation efficiency, need to adopt the larger vapourizing furnace of volume.
Visible, above two kinds of typical coals, in vapourizing furnace actual motion, often there will be some wall overtemperatures or efficiency of carbon conversion situation on the low side.
Summary of the invention
The present invention is directed to the problems referred to above nozzle overhead type vapourizing furnace is improved, proposed a kind of main jet overhead type vapourizing furnace and vaporizer thereof with pilot jet.
On the one hand, an object of the present invention is to provide a kind of vaporizer that is applicable to nozzle overhead type vapourizing furnace, comprise the main jet that is positioned at vaporizer top center, it is characterized in that: described vaporizer also comprises and is positioned at its top and/or Zhui Duan top, top pilot jet;
Another object of the present invention is to provide a kind of vaporizer that is applicable to nozzle overhead type vapourizing furnace, comprises the main jet that is positioned at vaporizer top center, it is characterized in that: described vaporizer also comprises the sidewall pilot jet that is positioned at its straight section sidewall;
Further object of the present invention is to provide a kind of vaporizer that is applicable to nozzle overhead type vapourizing furnace, comprise the main jet that is positioned at vaporizer top center, it is characterized in that: described vaporizer also comprises the sidewall pilot jet that is positioned at its top and/or Zhui Duan top, top pilot jet and is positioned at its straight section sidewall.
On the other hand, an object of the present invention is to provide a kind of main jet overhead type vapourizing furnace with one or more groups sidewall pilot jet, by the adjusting of combining of overhead type main jet and sidewall pilot jet, reasonably optimizing vaporizer flow field is arranged, enhancing mixed, increases the effective residence time, the raising transformation efficiency of coal particle in vapourizing furnace.
Another object of the present invention is to provide a kind of main jet overhead type vapourizing furnace with one or more groups top pilot jet, by the adjusting of combining of overhead type main jet and top pilot jet, reasonably optimizing vaporizer flow field is arranged, reduces wall localized hyperthermia, avoids ablation.
Further aim of the present invention is to provide a kind of main jet overhead type vapourizing furnace with many group pilot jets, by the adjusting of combining of overhead type main jet, top pilot jet and sidewall pilot jet, reasonably optimizing vaporizer flow field is arranged, increase on the one hand the effective residence time, the raising transformation efficiency of coal particle in vapourizing furnace, reduce on the other hand wall localized hyperthermia, avoid ablation.
The present invention is achieved by the following technical solutions:
On the one hand, the invention provides:
1. one kind is applicable to the vaporizer of nozzle overhead type vapourizing furnace, comprise the main jet that is positioned at vaporizer top center, it is characterized in that: described vaporizer also comprises the sidewall pilot jet that is positioned at its top and/or top Zhui Duan top pilot jet and/or is positioned at its straight section sidewall.
2. the vaporizer as described in embodiment 1, wherein, top pilot jet or sidewall pilot jet comprise one or more groups nozzle, the pilot jet that is positioned at same level is one group, every group comprises at least 3 nozzles, for example 4, be evenly arranged in a circumferential direction, decoration form is that axis is tangential on same imaginary circle or opposed type.
3. the vaporizer as described in embodiment 1 or 2, wherein, described any pilot jet has single passage structure or multi-channel structure, and vaporizer burner hearth is inserted in the end of nozzle.
4. the vaporizer as described in embodiment 1-3 any one, wherein, the shape of the end of described pilot jet can be circle or flat duck mouth shape type.
5. the vaporizer as described in embodiment 1-4 any one, wherein, pilot jet radially and/or is axially possessing adjustable angle.
6. the vaporizer as described in embodiment 1-5 any one, wherein, described vaporizer inwall is the inwall that refractory materials forms, or the compound inwall of water wall and refractory liner formation.
7. the vaporizer as described in embodiment 1-6 any one, wherein, sidewall pilot jet optionally sprays into following medium: containing oxygen premix gas (oxygen beyond other gas can be 1～3 kind in water vapour, carbonic acid gas, nitrogen), oxygen-free premix gas (in water vapour, carbonic acid gas, nitrogen 1～3 kind) and/or containing grey crude synthesis gas; And top pilot jet optionally sprays into following medium: oxygen-free premix gas (in water vapour, carbonic acid gas, nitrogen 1～3 kind) and/or containing grey crude synthesis gas.
On the other hand, the invention provides:
1. nozzle overhead type vapourizing furnace, comprises the vaporizer that is arranged on the portion that is located thereon in body of heater shell, it is characterized in that: vaporizer comprises and is positioned at the main jet at top of gasification furnace center and is positioned at top and/or Zhui Duan top, top pilot jet.
2. nozzle overhead type vapourizing furnace, comprises the vaporizer that is arranged on the portion that is located thereon in body of heater shell, it is characterized in that: vaporizer comprises the main jet that is positioned at top of gasification furnace center and the sidewall pilot jet that is positioned at straight section sidewall.
3. the nozzle overhead type vapourizing furnace as described in embodiment 1 or 2, wherein, vaporizer comprise be positioned at top of gasification furnace center main jet, be positioned at top and/or top Zhui Duan top pilot jet and be positioned at the sidewall pilot jet of straight section sidewall.
4. the nozzle overhead type vapourizing furnace as described in embodiment 1-3 any one, wherein, top pilot jet or sidewall pilot jet comprise one or more groups nozzle, the pilot jet that is positioned at same level is one group, every group comprises at least 3 nozzles, be evenly arranged in a circumferential direction, decoration form is that axis is tangential on same imaginary circle or opposed type.
5. the nozzle overhead type vapourizing furnace as described in embodiment 1-4 any one, wherein, described pilot jet has single passage structure or multi-channel structure, and vaporizer burner hearth is inserted in the end of nozzle.
6. the nozzle overhead type vapourizing furnace as described in embodiment 1-5 any one, wherein, the shape of end can be circle or flat duck mouth shape type.
7. the nozzle overhead type vapourizing furnace as described in embodiment 1-6 any one, wherein, pilot jet radially and/or is axially possessing adjustable angle.For example, nozzle axis and vapourizing furnace radial direction angle can be 30-40 degree.
8. the nozzle overhead type vapourizing furnace as described in embodiment 2-7 any one, wherein, sidewall pilot jet optionally sprays into following medium: containing oxygen premix gas (oxygen beyond other gas can be 1～3 kind in water vapour, carbonic acid gas, nitrogen), oxygen-free premix gas (in water vapour, carbonic acid gas, nitrogen 1～3 kind) and/or containing grey crude synthesis gas.
9. the nozzle overhead type vapourizing furnace as described in embodiment 1,3-7 any one, wherein, top pilot jet optionally sprays into following medium: oxygen-free premix gas (in water vapour, carbonic acid gas, nitrogen 1～3 kind) and/or containing grey crude synthesis gas.
10. the nozzle overhead type vapourizing furnace as described in embodiment 1-9 any one, wherein, described gasification stove internal wall is the inwall that refractory materials forms, or the compound inwall of water wall and refractory liner formation.
11. nozzle overhead type vapourizing furnaces as described in embodiment 1-10 any one, wherein vapourizing furnace syngas outlet place one small transfer line is connected with top of gasification furnace pilot jet through valve.
According to another specific embodiments of vapourizing furnace of the present invention, vapourizing furnace comprises the vaporizer that is arranged on shell internal upper part position, wherein vaporizer comprises main jet and is positioned at its top and/or top Zhui Duan top pilot jet and/or is positioned at the sidewall pilot jet of its straight section sidewall, and wherein vapourizing furnace syngas outlet place one small transfer line is connected with top of gasification furnace pilot jet through valve.Preferably, pilot jet radially and/or axially, possess adjustable angle and pilot jet end be shaped as circle or flat duck mouth shape.Preferably, vaporizer inwall is the inwall of refractory materials formation or the compound inwall of water wall and refractory liner formation.
Preferably, top pilot jet or sidewall pilot jet comprise one or more groups nozzle, for example 2 groups, 3 groups or 4 groups of nozzles, the pilot jet that is positioned at same level is one group, and every group comprises at least 3 nozzles, for example, 3,4,5 or 6, be evenly arranged in a circumferential direction.
Preferably, the decoration form of pilot jet is that axis is tangential on same imaginary circle.
Preferably, pilot jet has single passage structure or multi-channel structure.
Preferably, the degree of depth of nozzle-end insertion burner hearth can regulate.
Coal, coal slurry or other carbonaceous fuel, vaporized chemical, delivery medium, nozzle guard medium are sent into vapourizing furnace burner hearth from main jet, gasify and burn.Sidewall pilot jet passage optionally sprays into following medium: containing oxygen premix gas (other gas can be 1～3 kind in water vapour, carbonic acid gas, nitrogen), oxygen-free premix gas (in water vapour, carbonic acid gas, nitrogen 1～3 kind), containing grey crude synthesis gas, crude synthesis gas source is vapourizing furnace syngas outlet, approximately 200 ℃ of temperature.Top pilot jet can spray into described above except the medium containing oxygen premix gas.
The pilot jet that is installed on top or top cone section becomes top jet nozzle, and the nozzle that is installed on sidewall straight section becomes sidewall pilot jet.
The effect of top pilot jet is that the jet that sprays into medium formation from top pilot jet forms low temperature isolation strip between upper furnace wall and thermal-flame, prevents that the hot gas that burning produces from approaching wall, prevents wall overtemperature effectively.
The effect of sidewall pilot jet is, the jet that sprays into medium formation from sidewall pilot jet forms an annular jet district in the plane at place, being equivalent to increases by one " restrictor ring " at burner hearth middle part, the gas moving downward from upper furnace is subject to the impact of this " restrictor ring " to produce in advance backflow, large recirculating zone is become to upper and lower two recirculating zones, play recirculating zone in advance and be divided into upper and lower two-part effect.Similarly, organize sidewall pilot jet more and will form multiple recirculating zones.
Pilot jet head takes different shapes pattern that can fluerics, is approximate ellipsoidal as flat duck mouth shape can make cross section, fluerics, and circle can make cross section, fluerics be sub-circular, the structural shape that need to select head of arranging according to flow field structure.
Pilot jet head single passage structure is for delivery of a kind of gas, as contained oxygen premix gas, oxygen-free premix gas and containing the one in grey crude synthesis gas, channel structure can be carried two kinds of gases, and as centre channel passes into containing oxygen premix gas, outer passage passes into containing grey synthetic gas or oxygen-free premix gas.
It is as follows that pilot jet sprays into the effect of different media.
Spray into containing oxygen premix gas: except flow field layout regulates, the CO and the H that in oxygen and carbon or stove, produce
2burn, expand the high-temperature zone in stove, the transformation efficiency that be conducive to improve speed of response, improves carbon.Other gaseous constituent adjustable flame temperature containing in oxygen is reduced to below 1800 ℃, is unlikely to scaling loss refractory materials.
Spray into oxygen-free premixed gas: except flow field layout regulates, H wherein
2o also can participate in following reaction (1) and (2), is conducive to improve the transforming degree of carbon, and the outlet composition of adjustable synthetic gas, i.e. CO and H
2ratio.CO wherein
2can participate in reaction (3), promote the conversion of carbon.
Spray into containing grey crude synthesis gas: except flow field layout regulates, carbon remaining in ash content comes back in stove, realize ash content recirculation, can further there is chemical reaction in carbon residue on the one hand, as participate in above-mentioned reaction (1) (3) or (4), improves the efficiency of carbon conversion of vapourizing furnace, on the other hand, part of ash can form slag through high-temperature zone, improves clinkering rate, is conducive in shock chamber and the separating of synthetic gas.In addition, participate in reaction (1) and (2) containing the moisture of grey crude synthesis gas, be conducive to improve the transforming degree of carbon.
C+H
2O→CO+H
2 （1）
CO+H
2O→CO
2+H
2 （2）
C+CO
2→2CO （3）
2C+2O
2→CO
2+2CO （4）
Top pilot jet and sidewall pilot jet can be used alone and also can combine use, are illustrated in connection with specific embodiment.
Beneficial effect of the present invention:
By main jet and combining of pilot jet regulating stream field to carry out reasonably optimizing, make it adapt to the gasification of typical coal viscosity-temperature characteristics coal as narrow in low ash and high grey high ash melting point coal seed, pilot jet jet can be realized: thus isolation thermal-flame and wall reduce wall overtemperature, thereby ash content recirculation improves efficiency of carbon conversion and clinkering rate, thereby increase high-temperature zone area and improve effective residence time raising efficiency of carbon conversion, improve efficiency of carbon conversion thereby the back-mixing of strengthening flowing improves speed of reaction.
Accompanying drawing explanation
Fig. 1 is that the present invention is with the main jet overhead type vaporizer of pilot jet and the structural representation of vapourizing furnace.
Flow field schematic diagram when Fig. 2 is main jet operation.
Fig. 3 is the flow field schematic diagram that main jet and sidewall pilot jet move simultaneously.
Fig. 4 is the flow field schematic diagram that main jet and top pilot jet move simultaneously.
Fig. 5 is the flow field schematic diagram that main jet, sidewall pilot jet and top pilot jet move simultaneously.
In figure, 1---main jet
2---gasification locular wall
3---top pilot jet
4---sidewall pilot jet
5---gasification locular wall upper cone section
6---gasification locular wall straight section
7---vaporizer outlet
8---main jet fluerics
9---main jet recirculating zone
10---recirculating zone, top
11---recirculating zone, bottom
12---sidewall pilot jet fluerics cross section
13---pilot jet fluerics, top cross section
14---sidewall pilot jet centre channel
15---sidewall pilot jet outer passage
16---top pilot jet flat duck mouth shape passage
21---vaporizer
22---shock chamber
23---body of heater shell
24---syngas outlet
25---slag-drip opening
Embodiment
Drawings and Examples are for being described in further detail the present invention below.Described embodiment is only illustrative, in any case can not to be interpreted as be any limitation of the invention.
Embodiment mono-
In Fig. 2, only have main jet operation, top pilot jet and sidewall pilot jet all do not move.Now, vaporizer internal reflux district is larger, penetrates into lower furnace portion from furnace roof always.This operation condition is applicable to ash oontent moderate (10 ~ 25%), 1300 ~ 1450 ℃ of ash fusion points, and the coal that viscosity-temperature characteristics are good, only has main jet operation can reach high carbon conversions and the stable working of a furnace.
Embodiment bis-
In Fig. 3, main jet and sidewall pilot jet move simultaneously.This operation condition is for improving the situation that efficiency of carbon conversion is low, as while adopting the narrow viscosity-temperature characteristics coal of low ash, service temperature is less compared with low and high temperature district scope, thereby makes the effective residence time of pulverized coal particle in the high-temperature zone efficiency of carbon conversion situation on the low side that causes on the low side.In figure, sidewall pilot jet is positioned at gasification locular wall straight section, is evenly arranged in the horizontal direction 4, and nozzle axis and vapourizing furnace radial direction angle 35 are spent.Each sidewall pilot jet is channel structure, and centre channel 14 passes into containing oxygen premix gas, and outer passage 15 passes into containing the thick synthesizer of ash.4 injection stream districts form the region of sub-circular, are equivalent to, at vaporizer middle part, one " restrictor ring " is installed, and make recirculating zone 9 be divided into 10He Xia recirculating zone, upper recirculating zone 11, have strengthened the back-mixing in vaporizer and have flowed.The oxygen being sprayed into by sidewall pilot jet with produce district of localized hyperthermia containing grey crude synthesis gas exothermic heat of reaction, make the high-temperature zone range extension in vaporizer, and be converted into slag containing the rear section that is again heated of the ash content in grey crude synthesis gas.
Embodiment tri-
In Fig. 4, main jet and top pilot jet move simultaneously.This operation condition is for improving the situation of vaporizer wall overtemperature, as while adopting high grey high ash melting point coal seed, the higher situation of vaporizer wall surface temperature causing because service temperature is high.In Fig. 4, top pilot jet is evenly arranged 4 in the horizontal direction, and decoration form is opposed type, and spout inside is flat duck mouth shape passage 16, and the fluerics cross section 13 of its ejection is oblate.Because its ejection medium is oxygen-free, the fluerics therefore forming is cold zone, by flame and wall isolation, has reduced near the temperature of vaporizer wall.Especially be while containing grey crude synthesis gas when spraying into medium, due to absorption and the thermolysis of particle, can make wall surface temperature reduction amplitude increase.
Embodiment tetra-
In Fig. 5, main jet, top pilot jet, sidewall pilot jet move simultaneously.This operation condition can improve wall overtemperature and the low situation of efficiency of carbon conversion simultaneously, situation about occurring during as employing mixed coal.Can suitably reduce the oxygen supply amount of main jet, partial oxygen amount is fed by sidewall pilot jet, thereby expand high-temperature zone scope, to drawing and be back to top pilot jet containing grey crude synthesis gas of part (as 10% ~ 30%) vapourizing furnace syngas outlet simultaneously, thereby regulate wall surface temperature and realize ash content recirculation.
Claims (9)
1. one kind is applicable to the vaporizer of nozzle overhead type vapourizing furnace, comprise the main jet that is positioned at vaporizer top center, it is characterized in that: described vaporizer also comprises the sidewall pilot jet that is positioned at its top and/or top Zhui Duan top pilot jet and/or is positioned at its straight section sidewall.
2. vaporizer as claimed in claim 1, wherein, top pilot jet or sidewall pilot jet comprise one or more groups nozzle, the pilot jet that is positioned at same level is one group, every group comprises at least 3 nozzles, for example 4, be evenly arranged in a circumferential direction, decoration form is that axis is tangential on same imaginary circle or opposed type.
3. vaporizer as claimed in claim 1 or 2, wherein, described any pilot jet has single passage structure or multi-channel structure, and vaporizer burner hearth is inserted in the end of nozzle.
4. the vaporizer as described in claim 1-3 any one, wherein, the shape of the end of described pilot jet can be circle or flat duck mouth shape type.
5. the vaporizer as described in claim 1-4 any one, wherein, pilot jet radially and/or is axially possessing adjustable angle.
6. the vaporizer as described in claim 1-5 any one, wherein, described vaporizer inwall is the inwall that refractory materials forms, or the compound inwall of water wall and refractory liner formation.
7. the vaporizer as described in claim 1-6 any one; wherein, sidewall pilot jet optionally sprays into following medium: containing oxygen premix gas (oxygen beyond other gas can be 1～3 kind in water vapour, carbonic acid gas, nitrogen), oxygen-free premix gas (in water vapour, carbonic acid gas, nitrogen 1～3 kind) and/or containing grey crude synthesis gas; And top pilot jet optionally sprays into following medium: oxygen-free premix gas (in water vapour, carbonic acid gas, nitrogen 1～3 kind) and/or containing grey crude synthesis gas.
8. a nozzle overhead type vapourizing furnace, is characterized in that: comprise the vaporizer described in the setting claim 1-7 any one that is positioned at vapourizing furnace top in the enclosure.
9. vapourizing furnace as claimed in claim 8, wherein vapourizing furnace syngas outlet place one small transfer line is connected with top of gasification furnace pilot jet through valve.
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| CN201210465711.7A CN103820161A (en) | 2012-11-16 | 2012-11-16 | Gasification chamber with top-mounted nozzle and gasification furnace with same |
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| CN201210465711.7A CN103820161A (en) | 2012-11-16 | 2012-11-16 | Gasification chamber with top-mounted nozzle and gasification furnace with same |
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Cited By (6)
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| CN104498100A (en) * | 2014-12-18 | 2015-04-08 | 华东理工大学 | Gasifier and application thereof, and gasification method of carbonaceous matters |
| CN106957696A (en) * | 2017-04-24 | 2017-07-18 | 北京中寰工程项目管理有限公司 | Dry coal dust gasification furnace and dry pulverized coal classification oxygenation gasification process |
| CN107937036A (en) * | 2017-11-30 | 2018-04-20 | 陕西延长石油（集团）有限责任公司 | The system and method for oxygen concentration in a kind of circle fluidized-bed gasification furnace control gasifying agent |
| CN108148634A (en) * | 2018-02-11 | 2018-06-12 | 煤炭科学技术研究院有限公司 | A kind of novel fixed bed slag gasification installation of stage casing outlet |
| CN110964572A (en) * | 2019-12-12 | 2020-04-07 | 郑州轻工业大学 | Gasification agent tangent circle strong rotation pulverized coal gasification furnace device for preventing furnace wall burning loss |
| CN113637502A (en) * | 2021-07-30 | 2021-11-12 | 宁夏神耀科技有限责任公司 | Control method for ignition burner of pressurized gasifier and ignition device |
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| CN104498100A (en) * | 2014-12-18 | 2015-04-08 | 华东理工大学 | Gasifier and application thereof, and gasification method of carbonaceous matters |
| CN104498100B (en) * | 2014-12-18 | 2017-04-05 | 华东理工大学 | A kind of gasification furnace and its application, the gasification process of carbonaceous material |
| CN106957696A (en) * | 2017-04-24 | 2017-07-18 | 北京中寰工程项目管理有限公司 | Dry coal dust gasification furnace and dry pulverized coal classification oxygenation gasification process |
| CN107937036A (en) * | 2017-11-30 | 2018-04-20 | 陕西延长石油（集团）有限责任公司 | The system and method for oxygen concentration in a kind of circle fluidized-bed gasification furnace control gasifying agent |
| CN107937036B (en) * | 2017-11-30 | 2023-08-04 | 陕西延长石油（集团）有限责任公司 | System and method for controlling oxygen concentration in gasifying agent by circulating fluidized bed gasifier |
| CN108148634A (en) * | 2018-02-11 | 2018-06-12 | 煤炭科学技术研究院有限公司 | A kind of novel fixed bed slag gasification installation of stage casing outlet |
| CN108148634B (en) * | 2018-02-11 | 2023-09-12 | 煤炭科学技术研究院有限公司 | Novel fixed bed slag gasification device with middle section air outlet |
| CN110964572A (en) * | 2019-12-12 | 2020-04-07 | 郑州轻工业大学 | Gasification agent tangent circle strong rotation pulverized coal gasification furnace device for preventing furnace wall burning loss |
| CN113637502A (en) * | 2021-07-30 | 2021-11-12 | 宁夏神耀科技有限责任公司 | Control method for ignition burner of pressurized gasifier and ignition device |
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