CN1944589A - Fractional gasifying furnace for coal and coke gasification - Google Patents
Fractional gasifying furnace for coal and coke gasification Download PDFInfo
- Publication number
- CN1944589A CN1944589A CN 200610114039 CN200610114039A CN1944589A CN 1944589 A CN1944589 A CN 1944589A CN 200610114039 CN200610114039 CN 200610114039 CN 200610114039 A CN200610114039 A CN 200610114039A CN 1944589 A CN1944589 A CN 1944589A
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- Prior art keywords
- heater
- coal
- fractional
- gasifying furnace
- molten slag
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- 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.)
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- 239000003245 coal Substances 0.000 title claims abstract description 26
- 239000000571 coke Substances 0.000 title claims abstract description 21
- 238000002309 gasification Methods 0.000 title claims description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000001301 oxygen Substances 0.000 claims abstract description 43
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 25
- 239000000446 fuel Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002893 slag Substances 0.000 claims description 25
- 230000003134 recirculating effect Effects 0.000 claims description 14
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 239000011449 brick Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- 239000003818 cinder Substances 0.000 abstract description 2
- 238000010992 reflux Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000002679 ablation Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001300078 Vitrea Species 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
Abstract
The present invention is one stepped gasifying furnace for gasifying coal and coke to produce coarse gas containing CO and H2. The stepped gasifying furnace includes pressure resisting casing, refractory layer, coarse gas outlet, cinder outlet, water chilling system in the lower part of the furnace body, and feeding burner in the top to supply oxygen and fuel. It features the secondary oxygen nozzle set in the reflux region of the furnace body to regulate oxygen distribution inside the furnace and establish different temperature regions, so as to optimize the reaction condition, prolong the service life of the feeding burner and raise the volume utilizing rate of the furnace.
Description
Technical field
The present invention relates to a kind of can be with coal, coke gasification, produce the fractional gasifying furnace of the raw gas that contains carbon monoxide and hydrogen.
Background technology
Existing can be with coal, coke gasification, generate the vapourizing furnace of the raw gas that contains carbon monoxide and hydrogen, the mode that generally adopts crude fuel and oxygen once to drop into.Owing to can't artificially control the response behaviour in the vapourizing furnace, make that temperature distribution and the air-flow condition in the stove is unreasonable.Though No. 021210861 disclosed structure of application for a patent for invention Noncinder-cinder gasification furnace of one of the present application people application has related to twice oxygen and has supplied with, but, owing to must take two bodies of heater, so complex structure, cost increases substantially, and not only the pipeline connection brings loss, and the control difficulty is big, horizontally disposed vapourizing furnace also can take place admittedly, the gas biphase separates and bias current, therefore is difficult in practice apply.And some position in the monomer vapourizing furnace of existing top spray gasification, for example there be " recirculating zone " in vapourizing furnace top near in the annular zone of furnace roof, in " recirculating zone ", gas flow rates is slow, influence the mass transfer and the heat transfer of interior crude fuel of vapourizing furnace and oxygen, the capacity utilization in the vapourizing furnace is descended.Some vapourizing furnace that present use is arranged again, focus is very near apart from the feed burner in the stove, and high temperature ablation has shortened life-span of burner.
Summary of the invention
Deal with problems: the present invention solves in the present vapourizing furnace and can't adjust owing to oxygen distributes, the problem that causes the reaction in furnace condition to optimize, a kind of fractional gasifying furnace is provided, adopt classification to add the method for oxygen, regulate the distribution of oxygen in the stove, set up differing temps district in the stove, optimize reaction conditions, the oxygen that the second stage adds is at the recirculating zone lower edge, the gas of but " recirculating zone " in the disturbance stove, strengthen the heat and mass transport of interior crude fuel in this zone and oxygen, make this inefficient recirculation zone become high efficiency conversion zone, improved the capacity utilization of vapourizing furnace.
Technical scheme: a kind of coal that is used for, the fractional gasifying furnace of coke gasification, comprise the body of heater that pressure shell constitutes, the intravital flame retardant coating of pneumatic shell, be arranged on the raw gas outlet of pressure shell lower sidewall, be arranged on the slag-drip opening of pressure shell bottom, be arranged on the water Quench system of body of heater bottom, be arranged on the supply oxygen at pressure shell top and the feed burner of crude fuel, it is characterized in that being positioned on the described pressure shell described body of heater recirculating zone lower edge part and also be provided with the secondary oxygen jet, to form different humidity provinces in stove, promptly interior non-molten slag area of low temperature of following current banded stove and high temperature melt slag area up and down.
The present invention is provided with the secondary oxygen jet at body of heater recirculating zone lower edge, thereby can adopt classification to add the method for oxygen, regulate the distribution of oxygen in the stove, set up differing temps district in the stove, optimize reaction conditions, the oxygen that the second stage adds is at the recirculating zone lower edge, the gas of but " recirculating zone " in the disturbance stove, strengthen the heat and mass transport of interior crude fuel in this zone and oxygen, make this inefficient recirculation zone become high efficiency conversion zone, significantly reduce the space of recirculating zone, strengthened the mass transfer and the heat transfer process of chemical reaction in the stove, under the condition that does not change furnace binding, improved the capacity utilization of vapourizing furnace.Adopt classification to add oxygen and also make vapourizing furnace form the two portions that are connected in series up and down, promptly interior non-molten slag area of low temperature of following current banded stove and high temperature melt slag area up and down.Placed in-line up and down advantage is that crude fuel and oxygen flow in vapourizing furnace smooth and easy, and solid, the gas biphase that can not cause two isolated bodies of heater to exist separate and bias current.Two portions can adopt equal diameter directly to connect up and down, and also can adopting not, equal diameter directly connects or the undergauge connection.
The secondary oxygen jet is two, is symmetricly set on the described pressure shell sidewall.Symmetry is sprayed the heat and mass transport that oxygen can balancedly be strengthened interior crude fuel in this zone and oxygen, further improves the capacity utilization of vapourizing furnace.
Described feed burner is three telescoping nozzles, is respectively interior pipe, intermediate casing and outer layer sleeve, and described interior pipe feeds rare gas element and/or steam, and intermediate casing feeds coal or Jiao, outer layer sleeve aerating oxygen.The rare gas element of interior pipe moves down the furnace high-temperature point, can reduce the ablation of feed burner under the high temperature.
The feed burner can use the pulpous state crude fuel, also can use the powdery crude fuel.The intravital flame retardant coating of pneumatic shell can adopt water wall, and also available refractory brick is built by laying bricks or stones.
Workflow of the present invention is: it is the fractional gasifying furnace of raw material that crude fuel (coal or Jiao), rare gas element, oxygen enter with coal, Jiao from the feed burner together, wherein rare gas element is as propellant, high temperature dot is pushed away burner, form about one 1000 ℃ humidity province, the ash quarrel is in non-molten state.Reacted grey air-flow and the unreacted crude fuel of containing enters secondary gasification zone together downwards.Contact with the oxygen that enters from sidewall secondary oxygen jet in this zone, oxidizing reaction takes place, form a humidity province that is higher than 1300 ℃, the ash quarrel is in molten state.The ash quarrel of molten state flows downward along the stove inwall, contacts with water at furnace bottom, solidify to form Vitrea solid-state molten quarrel and discharges.
Description of drawings
Fig. 1 is the structural representation of an equal diameter body of heater of the present invention embodiment;
Fig. 2 is the not structural representation of equal diameter body of heater embodiment of one of the present invention;
Fig. 3 be one of the present invention not the equal diameter undergauge connect the structural representation of body of heater embodiment;
Embodiment
Embodiment 1: see Fig. 1.The coal of present embodiment, the fractional gasifying furnace of coke gasification are made of the flame retardant coating 2 of steel pressure shell 1 and Qi Nei, form body of heater 9.Raw gas outlet 5 is contained in the lower sidewall of pressure shell 1, and slag-drip opening 6 is contained in the bottom of withstand voltage Steel Sheel 1.Be provided with water Quench system 10 in body of heater 9 bottoms, water Quench system 10 is equipped with water port 8 and water supplement port 7 in the bottom of pressure shell 1, the invention is characterized in the side wall upper part that secondary oxygen jet 3 is arranged on pressure shell 1, preferred secondary oxygen jet 3 is two, as shown in the figure, be symmetricly set on the pressure shell 1, the position that secondary oxygen jet 3 is provided with should be a recirculating zone lower edge part for body of heater 9, can realize not only that in this position setting classification adds oxygen, and can strengthen simultaneously the heat and mass transport of crude fuel and oxygen in this zone, make this inefficient recirculation zone become high efficiency conversion zone, significantly reduced the space of recirculating zone, strengthen the mass transfer and the heat transfer process of chemical reaction in the stove, under the condition that does not change furnace binding, improved the capacity utilization of vapourizing furnace.
Three telescoping feed burners 4 are contained in the top of pressure shell, pipe 41, intermediate casing 42 and outer layer sleeve 43 in being respectively, and interior pipe 41 feeds rare gas element and/or steam, and intermediate casing 42 feeds coal or Jiao, outer layer sleeve 43 aerating oxygens.The rare gas element of interior pipe 41 moves down the furnace high-temperature point, can reduce the ablation of feed burner under the high temperature.
In addition, three telescoping feed burners 4 of the present invention are arranged on the body of heater top, add oxygen in the classification of body of heater side and also make vapourizing furnace form the two portions that are connected in series up and down, and promptly interior non-molten slag area of low temperature of following current banded stove and high temperature melt slag area up and down.Placed in-line up and down advantage is that crude fuel and oxygen flow in vapourizing furnace smooth and easy, and solid, the gas biphase that can not cause two isolated bodies of heater to exist separate and bias current.Two portions can adopt equal diameter directly to connect up and down, and also can adopting not, equal diameter directly connects or the undergauge connection.
Present embodiment is when using, crude fuel, oxygen, rare gas element are entered the fractional gasifying furnace of coal, coke gasification by feed burner 4 by pipeline separately, in the amount of this district's inner control oxygen and rare gas element, make the interior temperature of body of heater be no more than about 1000 ℃ of molten quarrel temperature.Reacted gas and unreacted material enter in the isometrical direct-connected zone, mend the oxygen of going into secondary oxygen jet 3 and further react in this zone, and the interior temperature of body of heater is increased to more than the molten quarrel temperature, generally are higher than 1300 ℃.At last the raw gas of Sheng Chenging in the water Quench after the fractional gasifying furnace of coal, coke gasification is sent in raw gas outlet 5.
Embodiment 2: see Fig. 2.The non-slag of the low temperature district, fractional gasifying furnace top of the coal of present embodiment, coke gasification and bottom high-temperature slag district not equal diameter directly are connected, the diameter in the non-slag of top low temperature district is less than bottom high-temperature slag district, present embodiment is according to the position of recirculating zone, with recirculating zone and being arranged to than major diameter, be convenient to the better controlled temperature of based on fuel character with the lower section.Other structure of present embodiment is with embodiment 1.
Embodiment 3: see Fig. 3.The non-slag of the low temperature district, fractional gasifying furnace top of the coal of present embodiment, coke gasification is connected with bottom high-temperature slag district undergauge, the non-slag of the top low temperature district area of space of this structure is longer, can provide a bigger more abundant gasification space for the lower crude fuel of calorific value, make it can be near 1000 ℃ molten quarrel temperature.Other structure of this example is with embodiment 1.
Embodiment 4-6: the secondary oxygen jet of embodiment 1-3 can all be set to one.
Claims (10)
1, a kind of coal that is used for, the fractional gasifying furnace of coke gasification, comprise the body of heater that pressure shell constitutes, the intravital flame retardant coating of pneumatic shell, be arranged on the raw gas outlet of pressure shell lower sidewall, be arranged on the slag-drip opening of pressure shell bottom, be arranged on the water Quench system of body of heater bottom, be arranged on the supply oxygen at pressure shell top and the feed burner of crude fuel, it is characterized in that being positioned on the described pressure shell described body of heater recirculating zone lower edge part and also be provided with the secondary oxygen jet, to form different humidity provinces in stove, promptly interior non-molten slag area of low temperature of following current banded stove and high temperature melt slag area up and down.
2, the fractional gasifying furnace that is used for coal, coke gasification according to claim 1 is characterized in that described secondary oxygen jet is two, is symmetricly set on the described pressure shell sidewall.
3, the fractional gasifying furnace that is used for coal, coke gasification according to claim 1 and 2, it is characterized in that described feed burner is three telescoping nozzles, be respectively interior pipe, intermediate casing and outer layer sleeve, pipe feeds rare gas element and/or steam in described, intermediate casing feeds coal or Jiao, outer layer sleeve aerating oxygen.
4, the fractional gasifying furnace that is used for coal, coke gasification according to claim 1 and 2 is characterized in that described body of heater is the equal diameter body of heater, and promptly the non-molten slag area of low temperature is identical with the molten slag area diameter of high temperature.
5, the fractional gasifying furnace that is used for coal, coke gasification according to claim 1 and 2 is characterized in that described body of heater is equal diameter body of heater not, and promptly the molten slag area diameter of non-molten slag area of low temperature and high temperature is inequality.
6, the fractional gasifying furnace that is used for coal, coke gasification according to claim 3 is characterized in that the described body of heater of described body of heater is the undergauge body of heater, and promptly the non-molten slag area of low temperature is connected by necking with the molten slag area of high temperature.
7, the fractional gasifying furnace that is used for coal, coke gasification according to claim 3 is characterized in that described body of heater is the equal diameter body of heater, and promptly the non-molten slag area of low temperature is identical with the molten slag area diameter of high temperature.
8, the fractional gasifying furnace that is used for coal, coke gasification according to claim 3 is characterized in that described body of heater is equal diameter body of heater not, and promptly the molten slag area diameter of non-molten slag area of low temperature and high temperature is inequality.
9. according to the fractional gasifying furnace of the described coal of claim 3, coke gasification, it is characterized in that the feed burner can use the pulpous state crude fuel, also can use the powdery crude fuel.
10. according to the fractional gasifying furnace of the described coal of claim 3, coke gasification, it is characterized in that the intravital flame retardant coating of pneumatic shell can adopt water wall, also available refractory brick is built by laying bricks or stones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101140391A CN100404652C (en) | 2006-10-25 | 2006-10-25 | Fractional gasifying furnace for coal and coke gasification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101140391A CN100404652C (en) | 2006-10-25 | 2006-10-25 | Fractional gasifying furnace for coal and coke gasification |
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| Publication Number | Publication Date |
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| CN1944589A true CN1944589A (en) | 2007-04-11 |
| CN100404652C CN100404652C (en) | 2008-07-23 |
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| CNB2006101140391A Active CN100404652C (en) | 2006-10-25 | 2006-10-25 | Fractional gasifying furnace for coal and coke gasification |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011009234A1 (en) * | 2009-07-20 | 2011-01-27 | Gu Dadi | Improved gasification process using staged oxygen |
| CN102079997A (en) * | 2009-12-01 | 2011-06-01 | 电源开发株式会社 | Gasification furnace, thermal power plant using gasification furnace, operating procedure of gasification furnace and operating procedure of thermal power plant using gasification furnace |
| CN102358849A (en) * | 2011-09-09 | 2012-02-22 | 华东理工大学 | Heat recovering type fuel gas preparation system and fuel gas preparation method thereof |
| CN104004549A (en) * | 2014-06-11 | 2014-08-27 | 华东理工大学 | Staged-oxygen-feed gasification furnace and gasification method thereof |
| CN105132037A (en) * | 2015-09-11 | 2015-12-09 | 哈尔滨工业大学 | Pulverized coal gasifier burner |
| CN108130132A (en) * | 2018-01-30 | 2018-06-08 | 北京阳华科技有限公司 | A kind of classification oxygen supply water cooling wall-shaped fixed-bed gasification furnace |
| CN110240944A (en) * | 2019-05-21 | 2019-09-17 | 浙江大学 | The method and device of fine coal constant-pressure and high-temperature cracking oxygen-rich gasification coproduction coal gas and semicoke |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5484554A (en) * | 1993-01-15 | 1996-01-16 | Texaco Inc. | Oxidant injection for improved controlled oxidation |
| JP3377546B2 (en) * | 1993-03-04 | 2003-02-17 | 三菱重工業株式会社 | Gasification method of organic matter |
| DE10343582B4 (en) * | 2003-09-18 | 2006-01-12 | Rwe Power Ag | Process and apparatus for fluidized bed gasification of solid carbonaceous materials with liquid slag removal |
| CN100366710C (en) * | 2005-12-14 | 2008-02-06 | 华东理工大学 | Multi-nozzle coal water mixture or fine coal gasifying furnace and its industrial application |
-
2006
- 2006-10-25 CN CNB2006101140391A patent/CN100404652C/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011009234A1 (en) * | 2009-07-20 | 2011-01-27 | Gu Dadi | Improved gasification process using staged oxygen |
| CN102079997A (en) * | 2009-12-01 | 2011-06-01 | 电源开发株式会社 | Gasification furnace, thermal power plant using gasification furnace, operating procedure of gasification furnace and operating procedure of thermal power plant using gasification furnace |
| CN102358849A (en) * | 2011-09-09 | 2012-02-22 | 华东理工大学 | Heat recovering type fuel gas preparation system and fuel gas preparation method thereof |
| CN102358849B (en) * | 2011-09-09 | 2013-12-25 | 华东理工大学 | Heat recovering type fuel gas preparation system and fuel gas preparation method thereof |
| CN104004549A (en) * | 2014-06-11 | 2014-08-27 | 华东理工大学 | Staged-oxygen-feed gasification furnace and gasification method thereof |
| CN105132037A (en) * | 2015-09-11 | 2015-12-09 | 哈尔滨工业大学 | Pulverized coal gasifier burner |
| CN105132037B (en) * | 2015-09-11 | 2018-07-06 | 哈尔滨工业大学 | A kind of pulverized coal gasification furnace burner |
| CN108130132A (en) * | 2018-01-30 | 2018-06-08 | 北京阳华科技有限公司 | A kind of classification oxygen supply water cooling wall-shaped fixed-bed gasification furnace |
| CN110240944A (en) * | 2019-05-21 | 2019-09-17 | 浙江大学 | The method and device of fine coal constant-pressure and high-temperature cracking oxygen-rich gasification coproduction coal gas and semicoke |
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| CN100404652C (en) | 2008-07-23 |
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