CN1804003A - Method for preparing synthetic gas by three-channel nozzle and partial oxidation of solid carbon-containing substance - Google Patents
Method for preparing synthetic gas by three-channel nozzle and partial oxidation of solid carbon-containing substance Download PDFInfo
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- CN1804003A CN1804003A CN 200510112302 CN200510112302A CN1804003A CN 1804003 A CN1804003 A CN 1804003A CN 200510112302 CN200510112302 CN 200510112302 CN 200510112302 A CN200510112302 A CN 200510112302A CN 1804003 A CN1804003 A CN 1804003A
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- shower nozzle
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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]
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Abstract
The disclosed synthetic gas is prepared as: loading the carrier gas with solid carbonaceous material, gasification agent and protective gas into gasifying fluid bed by a three-way nozzle; then partial oxidizing the material to obtain target. Wherein, leading the protective gas for the nozzle to prolong its lifetime and promote the solid particle to contact completely with gasification agent for better mixing effect. This invention has carbon conversion up to 99%, and has wide application for fine coal, petroleum coke and other solid waste.
Description
Technical field
The present invention relates to the method that the oxidation of a kind of solid carbon-contg material part prepares synthetic gas, relate in particular to a kind of method that adopts the three-channel nozzle partial oxidation to prepare synthetic gas.
Background technology
Partial oxidation prepares the entrained flow gasification method of synthetic gas, is in air flow bed, and solid carbon-contg material and vaporized chemical are carried out chemical reaction under High Temperature High Pressure, and making with carbon monoxide and hydrogen is the main synthetic gas of forming.This gasification process temperature, pressure height, device fabrication intensity is big, and the efficiency of carbon conversion height is strong to the adaptability of solid carbon-contg material, and the synthetic gas that makes can be used for generating, produces chemical and chemical fertilizer, synthetic oil product, makes geseous fuel etc., and purposes is very extensive.
Nozzle is one of key part of entrained flow gasification.Solid carbon-contg material and carrier gas thereof and vaporized chemical are imported air flow bed and make it to mix and reaction by it.Because temperature of reaction is up to～1500 ℃, the nozzle arrangements design is improper, its end of will ablating, and the ablation reactor wall produces serious consequence, or causes the abrasion of solid carbon-contg material to nozzle, influences its work-ing life.Existing patented technology such as United States Patent (USP) 4,523,529,4,736,693,4,858,538 and European patent 0 328 794 all adopt in shower nozzle be straight pipe type structure nozzle, the common defective is that logistics lacked accelerator before advancing reactor, and the speed of leaving nozzle is on the low side, is easy to the nozzle of ablating.United States Patent (USP) 4,523,529 by the gas redistributor, and solid carbon-contg substance channel periphery is provided with a plurality of circular oxygen channels at the center, and structure is very complicated, and inconvenience processing is safeguarded.United States Patent (USP) 4,736,693 have also established three passages, and for preventing the nozzle-end of ablating, the heat pipe that sealing is set between burner end and rear portion psychrophore cools off the burner end, and complex structure is processed difficult in maintenance.In addition, wherein the solid materials passage is for takeing in interior hybrid combination, and nozzle head is very easily denuded.
Summary of the invention
The technical issues that need to address of the present invention are to disclose the method that a kind of solid carbon-contg material employing three-channel nozzle partial oxidation prepares synthetic gas, to overcome the deficiencies in the prior art.
Method of the present invention comprises the steps:
The carrier gas, vaporized chemical and the protection gas that carry the solid carbon-contg material are entered entrained flow gasification by three-channel nozzle, obtain synthetic gas; The component and the weight percent of said synthetic gas are as follows:
CO is 55～65%, H
2Be 25～34%;
Said three-channel nozzle comprises ring conduit and nozzle outer shroud conduit in co-axial outer shroud shower nozzle, middle ring spray head, interior shower nozzle, nozzle center's conduit, the nozzle;
Shower nozzle, middle ring spray head and outer shroud shower nozzle are respectively the Taper Pipe of a butt in said, and middle ring spray headgear is outside interior shower nozzle, and the outer shroud shower nozzle is enclosed within again outside the middle ring spray head; The big end of outer shroud shower nozzle is connected with nozzle outer shroud conduit, and the ring conduit is connected in the big end of middle ring spray head and the nozzle, and the big end of interior shower nozzle is connected with the nozzle center conduit;
Interior shower nozzle and nozzle center's conduit constitute nozzle center's passage, encircle passage in the space formation nozzle between interior shower nozzle and the middle ring spray head, and the space constitutes the nozzle outer ring channel between middle ring spray head and the outer shroud shower nozzle.
The ring spray cephalic par is provided with cooling water jecket outside, constitutes the nozzle cooling water passage by the coil pipe that is attached thereto.
The carrier gas that carries the solid carbon-contg material from nozzle center's passage or a channel injection in the ring passage enter air flow bed; vaporized chemical then from nozzle center's passage or another channel injection in the ring passage enter air flow bed, protection gas sprays by the nozzle outer ring channel and enters air flow bed.
Said solid carbon-contg material is selected from solid carbon-contg materials such as fine coal, refinery coke, biomass, solid-state castoff;
Said carrier gas is selected from nitrogen, CO
2, a kind of or its mixture in water vapor or the synthetic gas;
Said protection gas is selected from nitrogen, CO
2Or a kind of or its mixture in the water vapor, but should not contain combustible gases such as oxygen and carbon monoxide, hydrogen;
Said vaporized chemical is selected from oxygen, water vapor or CO
2In a kind of or its mixture;
Carry in the carrier gas of solid carbon-contg material, the weight ratio of solid carbon-contg material and carrier gas is: the solid carbon-contg material: carrier gas=0.5～20;
The weight ratio of solid carbon-contg material and vaporized chemical is:
Solid carbon-contg material: vaporized chemical=1: 0.5～1.5;
The solid carbon-contg material with the weight ratio of protection gas is:
Solid carbon-contg material: protection gas=1: 0.005～1.0;
The linear velocity that carries the carrier gas jetting nozzle of solid carbon-contg material is 5～60 meter per seconds;
The linear velocity of vaporized chemical jetting nozzle is 40～140 meter per seconds;
The linear velocity of protection gas blowout delivery nozzle is 0.5～40 meter per second.
Said air flow bed has had disclosed report in many patents and document, the present invention repeats no more.
The entrained flow gasification temperature is 1000～1600 ℃, and pressure is normal pressure～6.0Mpa.
Method of the present invention, nozzle arrangements is simple, makes with easy to maintenance.By the nozzle outer ring channel is set, introduce the protection gas that is used to protect burner, can significantly improve burner work-ing life on the one hand, on the other hand, can promote fully contacting of solid particulate and vaporized chemical, obtain good mixed effect.Nozzle of the present invention can import solid carbon-contg material and delivery of carrier gas thereof, vaporized chemical in the reactor and carry out partial oxidation reaction, the preparation synthetic gas, and its efficiency of carbon conversion reaches 99%.The partial oxidation that can be used for solid carbon-contg materials such as solid carbon-contg material such as fine coal, refinery coke, biomass, solid-state castoff prepares synthesis gas process, and is of many uses.
Description of drawings
Fig. 1 is this structure of nozzle synoptic diagram.
Embodiment
Fig. 1 is the nozzle arrangements synoptic diagram, and said nozzle comprises and encircles conduit (5) and nozzle outer shroud conduit (6) in co-axial outer shroud shower nozzle (1), middle ring spray head (2), interior shower nozzle (3), nozzle center's conduit (4), the nozzle.Shower nozzle (3), middle ring spray head (2) and outer shroud shower nozzle (1) are respectively the Taper Pipe of a butt in said, and outside the ring spray head (2), middle ring spray head (2) was enclosed within outside the interior shower nozzle (3) during outer shroud shower nozzle (1) was enclosed within.The big end of outer shroud shower nozzle (1) is connected with nozzle outer shroud conduit (6), encircles conduit (5) in the big end of middle ring spray head (2) and the nozzle and is connected, and the big end of interior shower nozzle (3) is connected with nozzle center's conduit (4).Be provided with the gap between middle ring spray head (2) and the outer shroud shower nozzle (1), constitute nozzle outer ring channel (7); Be provided with the gap between interior shower nozzle (3) and the middle ring spray head (2), constitute in the nozzle and encircle passage (8), interior shower nozzle (3) and nozzle center's conduit (4) constitute nozzle center's passage (9).
As seen from Figure 1; in order to protect nozzle; ring spray head (1) outside spiral coil cooling tube (11) that is provided with cooling room (10) and is connected with cooling room (10) outside, cooling fluid flows into cooling room (10) by the inlet of spiral coil cooling tube (11), is discharged by the outlet pipe of spiral coil cooling tube (11).
The interior contraction half-angle α of shower nozzle (3) is 1 °～60 ° in said, and its outside angle of inclination beta is 20 °～90 °;
The interior contraction half-angle ε of middle ring spray head (2) is 0 °～70 °, and its outside tilt angle gamma is 20 °～90 °;
The interior contraction half-angle of outer shroud shower nozzle (1) is 0 °～70 °.
The spout bore d of shower nozzle (3) and the ratio of spout straight section height h are h in said: d=0.1～10.
The vents face of shower nozzle (3) and middle ring spray head (2) is 0～50mm apart from s in said.
The vents face of ring spray head (2) and outer shroud shower nozzle (1) is 0～40mm apart from t in said.
The carrier gas, vaporized chemical and the protection gas that carry the solid carbon-contg material are entered entrained flow gasification by three-channel nozzle shown in Figure 1, obtain synthetic gas; Said air flow bed adopts the technology of 98110616.1 patent reports.
The interior contraction half-angle α of shower nozzle (3) is 1 ° in said, and its outside angle of inclination beta is 70 °;
The interior contraction half-angle ε of middle ring spray head (2) is 20 °, and its outside tilt angle gamma is 70 °;
The interior contraction half-angle of outer shroud shower nozzle (1) is 30 °.
The spout bore d of shower nozzle (3) and the ratio of spout straight section height h are h in said: d is 1.
The vents face of shower nozzle (3) and middle ring spray head (2) is 0mm apart from s in said.
The vents face of ring spray head (2) and outer shroud shower nozzle (1) is 0mm apart from t in said.
Said solid carbon-contg material is selected from fine coal;
Said carrier gas is selected from N
2
Said protection gas is selected from water vapor;
Said vaporized chemical is selected from oxygen;
Carry in the carrier gas of solid carbon-contg material, the content of solid carbon-contg material is 450 kilograms/cubic metre;
The part by weight of vaporized chemical and solid carbon-contg material is: 0.82
The part by weight of protection gas and solid carbon-contg material is: 0.15;
The linear velocity that carries the carrier gas jetting nozzle of solid carbon-contg material is 10 meter per seconds;
The linear velocity of vaporized chemical jetting nozzle is 90 meter per seconds;
The linear velocity of protection gas blowout delivery nozzle is 20 meter per seconds;
The entrained flow gasification temperature is 1400 ℃, and pressure is 4.0Mpa.
Adopting above-mentioned method is the feedstock production synthetic gas with fine coal, and its efficiency of carbon conversion reaches 99%.The component and the weight percent of said synthetic gas are as follows
CO is 58～62%, H
2Be 29～32%.
The carrier gas, vaporized chemical and the protection gas that carry the solid carbon-contg material are entered entrained flow gasification by three-channel nozzle shown in Figure 1, obtain synthetic gas; It is the technology of the disclosed report of 200410089404.9 patents that said air flow bed adopts application number.
The interior contraction half-angle α of shower nozzle (3) is 30 ° in said, and its outside angle of inclination beta is 60 °;
The interior contraction half-angle ε of middle ring spray head (2) is 30 °, and its outside tilt angle gamma is 50 °;
The interior contraction half-angle of outer shroud shower nozzle (1) is 50 °.
The spout bore d of shower nozzle (3) and the ratio of spout straight section height h are h in said: d is 10.
The vents face of shower nozzle (3) and middle ring spray head (2) is 15mm apart from s in said.
The vents face of ring spray head (2) and outer shroud shower nozzle (1) is 5mm apart from t in said.
Said solid carbon-contg material is selected from refinery coke;
Said carrier gas is selected from CO
2
Said protection gas is selected from water vapor and CO
2Mixed air (volume ratio 1: 1);
Said vaporized chemical is selected from the mixed air (volume ratio 20: 1) of oxygen and water vapor;
Carry in the carrier gas of solid carbon-contg material, the content of solid carbon-contg material is 450 kilograms/cubic metre;
The part by weight of vaporized chemical and solid carbon-contg material is: 0.9;
The part by weight of protection gas and solid carbon-contg material is: 0.1;
The linear velocity that carries the carrier gas jetting nozzle of solid carbon-contg material is 30 meter per seconds;
The linear velocity of vaporized chemical jetting nozzle is 60 meter per seconds;
The linear velocity of protection gas blowout delivery nozzle is 10 meter per seconds;
The entrained flow gasification temperature is 1300 ℃, and reaction pressure is normal pressure 3.0MPa
Adopting above-mentioned method is the feedstock production synthetic gas with the refinery coke, and its efficiency of carbon conversion reaches 98.5%.
The component and the weight percent of said synthetic gas are as follows:
CO is 60～63%, H
2Be 30～32%.
Claims (8)
1. a solid carbon-contg material adopts the three-channel nozzle partial oxidation to prepare the method for synthetic gas, it is characterized in that, the carrier gas, vaporized chemical and the protection gas that comprise the steps: to carry the solid carbon-contg material enter entrained flow gasification by three-channel nozzle, obtain synthetic gas;
Said three-channel nozzle comprises and encircles conduit (5) and nozzle outer shroud conduit (6) in co-axial outer shroud shower nozzle (1), middle ring spray head (2), interior shower nozzle (3), nozzle center's conduit (4), the nozzle.Shower nozzle (3), middle ring spray head (2) and outer shroud shower nozzle (1) are respectively the Taper Pipe of a butt in said, and outside the ring spray head (2), middle ring spray head (2) was enclosed within outside the interior shower nozzle (3) during outer shroud shower nozzle (1) was enclosed within.The big end of outer shroud shower nozzle (1) is connected with nozzle outer shroud conduit (6), in encircle conduit (5) in big end and the nozzle of ring spray head (2) and be connected, the big end of interior shower nozzle (3) is connected with nozzle center's conduit (4), be provided with the gap between middle ring spray head (2) and the outer shroud shower nozzle (1), constitute nozzle outer ring channel (7); Be provided with the gap between interior shower nozzle (3) and the middle ring spray head (2), constitute in the nozzle and encircle passage (8), interior shower nozzle (3) and nozzle center's conduit (4) constitute nozzle center's passage (9);
The carrier gas that carries the solid carbon-contg material from nozzle center's passage (9) or in the ring passage channel injection of (8) enter air flow bed; vaporized chemical then from nozzle center's passage (9) or another channel injection in the ring passage (8) enter air flow bed, protection gas enters air flow bed by nozzle outer ring channel (7) injection.
2. method according to claim 1 is characterized in that, outside the spiral coil cooling tube (11) that is provided with cooling room (10) and is connected with cooling room (10) outside the ring spray head (1).
3. method according to claim 1 is characterized in that, the interior contraction half-angle α of said interior shower nozzle (3) is 1 °～60 °, and its outside angle of inclination beta is 20 °～90 °.
4. method according to claim 3 is characterized in that, the interior contraction half-angle ε of middle ring spray head (2) is 0 °～70 °, and its outside tilt angle gamma is 20 °～90 °.
5. method according to claim 4 is characterized in that, the interior contraction half-angle of outer shroud shower nozzle (1) is 0 °～70 °.
6. method according to claim 1 is characterized in that, the spout bore d of said interior shower nozzle (3) and the ratio of spout straight section height h are h: d=0.1～10.
The vents face of shower nozzle (3) and middle ring spray head (2) is 0～50mm apart from s in said.
The vents face of ring spray head (2) and outer shroud shower nozzle (1) is 0～40mm apart from t in said.
7. according to each described method of claim 1～6, it is characterized in that said solid carbon-contg material is selected from fine coal, refinery coke, biomass or solid-state castoff.
8. method according to claim 7 is characterized in that said carrier gas is selected from nitrogen, CO
2, a kind of or its mixture in water vapor or the synthetic gas, said protection gas is selected from nitrogen, CO
2Or a kind of or its mixture in the water vapor, said vaporized chemical is selected from oxygen, water vapor or CO
2In a kind of or its mixture;
Carry in the carrier gas of solid carbon-contg material, the weight ratio of solid carbon-contg material and carrier gas is: the solid carbon-contg material: carrier gas=0.5～20;
The weight ratio of solid carbon-contg material and vaporized chemical is:
Solid carbon-contg material: vaporized chemical=1: 0.5～1.5;
The solid carbon-contg material with the weight ratio of protection gas is:
Solid carbon-contg material: protection gas=1: 0.005～1.0;
The linear velocity that carries the carrier gas jetting nozzle of solid carbon-contg material is 5～60 meter per seconds;
The linear velocity of vaporized chemical jetting nozzle is 40～140 meter per seconds;
The linear velocity of protection gas blowout delivery nozzle is 0.5～40 meter per second.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101123029A CN100374531C (en) | 2005-12-29 | 2005-12-29 | Method for preparing synthetic gas by three-channel nozzle and partial oxidation of solid carbon-containing substance |
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|---|---|---|---|
| CNB2005101123029A CN100374531C (en) | 2005-12-29 | 2005-12-29 | Method for preparing synthetic gas by three-channel nozzle and partial oxidation of solid carbon-containing substance |
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| CN100374531C CN100374531C (en) | 2008-03-12 |
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| CN103874748A (en) * | 2012-05-04 | 2014-06-18 | 社团法人高等技术研究院研究组合 | Non-melt and partial melt type entrained flow bed gasifier |
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| CN1314579C (en) * | 2003-03-14 | 2007-05-09 | 华东理工大学 | Equipment and method for producing synthetic gas by using non-catalytic and partial oxidation process with gaseous hydrocarbon as raw material |
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| CN104194837A (en) * | 2014-08-18 | 2014-12-10 | 鲁西化工集团股份有限公司煤化工二分公司 | Harmless treatment process for wastewater containing organic matters and device for implementing harmless treatment process |
| CN104194837B (en) * | 2014-08-18 | 2017-03-15 | 鲁西化工集团股份有限公司煤化工二分公司 | A kind of harmless treatment process of organic wastewater and its device |
| CN104373935A (en) * | 2014-10-11 | 2015-02-25 | 科林未来能源技术(北京)有限公司 | Powdered coal combustor for entrained-flow bed gasification furnace |
| CN105132037A (en) * | 2015-09-11 | 2015-12-09 | 哈尔滨工业大学 | Pulverized coal gasifier burner |
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| CN100374531C (en) | 2008-03-12 |
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