CN101050385B - Burner of possessing multiplepath entrances of solid fuel, and application - Google Patents
Burner of possessing multiplepath entrances of solid fuel, and application Download PDFInfo
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- CN101050385B CN101050385B CN 200710040562 CN200710040562A CN101050385B CN 101050385 B CN101050385 B CN 101050385B CN 200710040562 CN200710040562 CN 200710040562 CN 200710040562 A CN200710040562 A CN 200710040562A CN 101050385 B CN101050385 B CN 101050385B
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- solid fuel
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- 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
This invention discloses a combustor with several entrances for solid fuel, and its application. The combustor comprises an outer nozzle, a middle nozzle, an inner nozzle, ducts connected with the above nozzles, and two or more branch ducts for feeding solid fuel through connected with the central duct. The ratio of total cross section area of the branch ducts to the central duct is (1-1.5):1, which can avoid difficult measurement of solid fuel mass flow rate due to large caliber of the duct, and improve the distribution uniformity and flow stability of high-concentration solid fuel at duct cross section. The combustor has such advantages as convenient control over mass flow rate, simple structure, convenient production and maintenance, and wide applications, and can be used for producingsynthesis gas from solid carbon-containing substances by partial oxidation.
Description
Technical field
The present invention relates to a kind of burner that the solid fuel partial oxidation prepares synthetic gas that is used for multiplepath entrances of solid fuel.
Technical background
How efficiently, utilize the solid fuel gasification to produce synthetic gas, fuel gas and reducing gas cleanly is the problem of paying close attention to all the time in the Chemical Manufacture.In numerous gasification process, people are generally good to have that production intensity is big, gasification efficiency is high, to the entrained flow bed gasification technology of many advantages such as solid feed adaptability is strong; Wherein, burner (also claiming burner) is one of key equipment in the entrained flow bed gasification technology.
For forming good technological effect, prolong burner work-ing life simultaneously, the structure design of burner is most important, the vital role that it all has final process results and device security.
Exist the solid-fuelled burner patented technology of being applicable to of multiple structure formation at present, and the partial monopoly technology has been applied among the industrial production, for example, United States Patent (USP) 4523529,4736693,4858538 and European patent 0328794 and Chinese patent 200420114032.6 etc.Yet what existing most of burner patented technologies all adopted is the single channel charging, is about to solid fuel and introduces in the burner by one road transport pipe, enters vapourizing furnace then and carries out partial oxidation reaction.When the gasification process amount is big, Shell gasification installation as 2000 tons of day outputs, can adopt the burner of four single channel chargings, then the load corresponding to the fuel tube of every road burner is 500 tons, and the measuring instrument of corresponding quadruplet oxygenant, vaporized chemical and coal dust must be set on four road pipelines, be applicable to that the burner of this magnitude and supporting air-transport system thereof have all obtained industrial application at present; But, reach medium scale vapourizing furnace for the solid fuel day output, adopt as the described vapourizing furnace technology of joining a burner of Chinese patent 200410089404.9 then more simple, economical.
Only have at burner under the condition of one road solid substances import, compare with the gasification system of being furnished with a plurality of burners, for the gasification system of only being furnished with a burner, the transport pipe internal diameter of its solid fuel is inevitable to be increased greatly, make Dual-Phrase Distribution of Gas olid distributed pole on cross-section of pipeline inhomogeneous, cause flowing instability, even the gasifying process condition is difficult to strict control, influences air conveying normal running.On the other hand, difficulty (the Y.Yan that big caliber has also caused the solid substances transportation parameters accurately to measure, FlowRate Measurement of Bulk Solids in Pneumatic Pipelines-Problems andSolutions, Bulk Solids Handling, Vol.15,447-456,1995), because Dual-Phrase Distribution of Gas olid institute's inherent distribution heterogeneity on cross-section of pipeline, so far also do not have accurately to measure the reliable instrument of the Dual-Phrase Distribution of Gas olid instantaneous mass flow rate in the big caliber on the industrial production, and solid masses flow-rate measurement instrument research and development at present are also at laboratory stage.
The known measured extra heavy pipe road of solid masses flow-rate measurement instrument that is applied at present on the full scale plant is a fine coal Pneumatic conveying pipeline on the powdered coal pressuring gasified full scale plant of Shell, its internal diameter is no more than 60mm, and the daily throughput of this pipeline is about 600 tons of coal dusts during oepration at full load.At present, the manufacturer declares that the bore maximum of the solid speed metrical instrument that can provide is no more than 200mm.
Summary of the invention
The technical issues that need to address of the present invention are to disclose a kind of burner and application thereof with multiplepath entrances of solid fuel, to overcome the above-mentioned defective that prior art exists, satisfy the needs of industrial sector.
The said burner of the present invention comprises the outer shroud shower nozzle of coaxial setting successively, middle ring spray head and interior ring spray head, and the outer shroud conduit, middle ring conduit and the centre pipe that are connected with outer shroud shower nozzle, middle ring spray head and interior ring spray head respectively; It is characterized in that also comprise two or more solid fuels conveying arms that are connected with centre pipe, it is 1～1.5:1 that said solid fuel is carried the summation of arm cross-sectional area and the ratio of centre pipe cross-sectional area.
The burner that the present invention is proposed is installed on conventional entrained flow gasification reactor, promptly can be used for the solid carbon-contg material and be delivered to burner simultaneously by a plurality of transfer lines, and and vaporized chemical spray into together and carry out partial oxidation in the gasifying reactor and prepare synthetic gas.
During use, solid carbon-contg material and carrier gas thereof enter gasifying reactor by interior ring spray head injection after carrying arm to enter centre pipe; Oxygenant is sprayed by middle ring spray head by middle ring conduit and enters gasifying reactor, and vaporized chemical is sprayed by the outer shroud shower nozzle by the outer shroud conduit and enters gasifying reactor.
Said solid fuel is selected from fine coal, refinery coke, biomass, organic solid-state castoff etc.; Said carrier gas is selected from nitrogen, carbonic acid gas, water vapor, synthetic gas or its gas mixture;
Said oxygenant is selected from oxygen, air or its gas mixture; Said vaporized chemical is selected from water vapour, carbonic acid gas or its gas mixture;
The weight ratio of solid fuel and carrier gas is: 5.0～600:1; The weight ratio of solid fuel and oxygenant is: 1:0.5～1.5; The weight ratio of solid fuel and vaporized chemical is: 1:0.05～0.3.
The spout place linear velocity of interior ring spray head is 5-40m/s, and the spout place linear velocity of middle ring spray head is 40-100m/s, and the spout place linear velocity of outer shroud shower nozzle is 10-60m/s;
Temperature of reaction is 1000～1600 ℃, and reaction pressure is normal pressure～6MPa.
The burner that the present invention proposes not only has Chinese patent 200510025050.6,200420114032.6 and disclosed patent 200510112302.9 described technical superioritys and good process effect, and by appropriate design multiplepath entrances of solid fuel on single burner, avoided the excessive solid fuel flow-rate measurement difficulty that causes of transfer line bore, homogeneity and stability of flow that the high density Dual-Phrase Distribution of Gas olid distributes have also been improved simultaneously on cross-section of pipeline, the solid fuel flow control is more flexible, and it is simple in structure, make with easy to maintenance, can be used for the portion oxidation synthesis gas technology of multiple solid carbon-contg material, of many uses.
Description of drawings
Fig. 1 is the burner synoptic diagram with three road solid fuel imports.
Fig. 2 for solid fuel carry arm with and the formed circle of cross section of the centre pipe synoptic diagram when tangent.
Embodiment
Referring to Fig. 1, said burner comprises outer shroud shower nozzle 2 of coaxial setting successively, middle ring spray 3 and interior ring spray 8, and respectively with outer shroud shower nozzle 2, middle ring spray 3 and interior ring spray 8 an outer shroud conduit 4 that are connected, middle ring conduit 5 and centre pipe 6; It is characterized in that also comprise two or more solid fuels conveying arms 7 that are connected with centre pipe 6, it is 1～1.5:1 that said solid fuel is carried the summation of arm cross-sectional area and the ratio of centre pipe cross-sectional area.
Preferably, referring to Fig. 1, the angle α between the central axis of said solid fuel conveying arm 7 and the central axis of centre pipe 6 is 5 °～90 °, preferably 10 °～30 °;
Preferably, referring to Fig. 2, said solid fuel carries arm 7 with tangent with the formed circle of cross section of centre pipe 6;
It is 2～10 that preferred solid fuel is carried the quantity of arm 7, preferred 3～6;
Preferably, the other end of the other end of centre pipe 6 is carried arm 7 to be connected with solid fuel or is sealed, and preferably carries arm 7 to be connected with one road solid fuel;
Further, ring spray 8 is a Taper Pipe that shrinks half-angle β and outside tilt angle gamma in having in said, ring spray 3 is a Taper Pipe that shrinks half-angle 6 and outer side rake angle ε in having in said, said outer shroud shower nozzle 2 be one have in the Taper Pipe of contraction half-angle η;
The interior contraction half-angle β of ring spray 8 is 1 °～60 ° in said, and its outside tilt angle gamma is 20 °～90 °; In the interior contraction half-angle 6 of ring spray 3 be 0 °～70 °, its outer side rake angle ε is 20 °～90 °; The interior contraction half-angle η of outer shroud shower nozzle 2 is 0 °～70 °;
The ratio of the spout bore E of interior shower nozzle 8 and spout straight section height h is h:d=0～10.
The vents face of interior shower nozzle 8 and middle ring spray 3 be 0～50mm apart from s, the vents face of middle ring spray 3 and outer shroud shower nozzle 2 be 0～40mm apart from t.
Further, said burner comprises that also the cooling room 1 that is arranged at the outer shroud shower nozzle outside is used to protect burner not damaged by the interior high temperature of reactor, and its methods for cooling can be industrial normally used coil tube type or jacketed type.
Adopting the burner with three road solid fuels inlet as shown in Figure 1 is air flow bed reactor feed, comprises that two-way carries arm, and one the road and the co-axial center of centre pipe transfer lime.Two-way carries the mode of communicating of arm and centre pipe to adopt above-mentioned first kind of mode of communicating.Arm and centre pipe angulation a are 30 °.
The interior contraction half-angle β of interior shower nozzle is 1 °, and outside tilt angle gamma is 70 °, and the interior contraction half-angle 6 of middle ring spray head is 20 °, and its outer side rake angle ε is 70 °, and the interior contraction half-angle η of outer shroud shower nozzle is 30 °.The ratio of interior shower nozzle nozzle diameter E and spout straight section h is 1.The vents face of interior shower nozzle and middle ring spray head be 0mm apart from s, the vents face of middle ring spray 3 and outer shroud shower nozzle 2 be 0mm apart from t.
This burner adopts common flange connection with being connected of air flow bed reactor.
The oxygenant of ring passage is an oxygen in entering, and the vaporized chemical that enters outer ring channel is a water vapor, carries arm to enter centre pipe and the solid fuel that enters centre channel at last is a fine coal by burner center transfer lime and two-way, and carrier gas is a nitrogen.
The fine coal mass rate of three road solid fuel ingress pipes is 21t/h, and then the fine coal mass rate of centre pipe is 63t/h.The nitrogen mass rate of No. three ingress pipes is 3t/h.The mass rate of oxygen and water vapor is respectively 17.8t/h and 4.2t/h.About 1400 ℃ of reactor service temperature, working pressure 4MPa.Oxygen therefrom encircles the passage ejection with the speed of 90m/s and enters reactor, and water vapor enters reactor with the speed of 10m/s from the outer ring channel ejection, and nitrogen and fine coal spray from centre channel with the speed of 20m/s, enter reactor.Partial oxidation reaction takes place in fine coal and vaporized chemical in reactor, generate about 21000Nm
3The synthetic gas of/h, wherein effectively gas content is about 90%, efficiency of carbon conversion about 99%.
Claims (5)
1. the burner that has multiplepath entrances of solid fuel, the outer shroud shower nozzle (2), middle ring spray head (3) and the interior ring spray head (8) that comprise coaxial setting successively, and the outer shroud conduit (4), middle ring conduit (5) and the centre pipe (6) that are connected with outer shroud shower nozzle (2), middle ring spray head (3) and interior ring spray head (8) respectively; It is characterized in that also comprise the plural solid fuel conveying arm (7) that is connected with centre pipe (6), it is 1～1.5: 1 that said solid fuel is carried the summation of arm (7) cross-sectional area and the ratio of centre pipe (6) cross-sectional area;
Angle α between the central axis of said solid fuel conveying arm (7) and the central axis of centre pipe (6) is 10 °～30 °.
2. the burner with multiplepath entrances of solid fuel according to claim 1 is characterized in that, it is 2～10 that solid fuel is carried the quantity of arm (7).
3. the burner with multiplepath entrances of solid fuel according to claim 1 is characterized in that, it is 3～6 that solid fuel is carried the quantity of arm (7).
4. according to each described burner of claim 1～3, it is characterized in that the other end of described centre pipe (6) is carried arm (7) to be connected with solid fuel or sealed with multiplepath entrances of solid fuel.
5. according to each described application of claim 1～4, it is characterized in that, be used for partial oxidation and prepare synthetic gas with burner of multiplepath entrances of solid fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710040562 CN101050385B (en) | 2007-05-11 | 2007-05-11 | Burner of possessing multiplepath entrances of solid fuel, and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710040562 CN101050385B (en) | 2007-05-11 | 2007-05-11 | Burner of possessing multiplepath entrances of solid fuel, and application |
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| Publication Number | Publication Date |
|---|---|
| CN101050385A CN101050385A (en) | 2007-10-10 |
| CN101050385B true CN101050385B (en) | 2010-12-29 |
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| CN 200710040562 Active CN101050385B (en) | 2007-05-11 | 2007-05-11 | Burner of possessing multiplepath entrances of solid fuel, and application |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101550054B (en) * | 2009-05-08 | 2012-12-26 | 清华大学 | A thermal plasma and coal dust mixing structure applied to acetylene preparation process through catalytic cracking |
| CN104373935B (en) * | 2014-10-11 | 2016-09-07 | 科林未来能源技术(北京)有限公司 | A kind of powdered coal burner for airflow bed gasification furnace |
| CN108676582B (en) * | 2018-05-22 | 2020-05-26 | 哈尔滨工业大学 | Gasification agent and raw gas full-mixing burner |
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