CN102257322A - Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas - Google Patents
Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas Download PDFInfo
- Publication number
- CN102257322A CN102257322A CN2009801504582A CN200980150458A CN102257322A CN 102257322 A CN102257322 A CN 102257322A CN 2009801504582 A CN2009801504582 A CN 2009801504582A CN 200980150458 A CN200980150458 A CN 200980150458A CN 102257322 A CN102257322 A CN 102257322A
- Authority
- CN
- China
- Prior art keywords
- fuel
- burner
- gas
- gasifier
- dense
- Prior art date
- 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.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/006—Fuel distribution and transport systems for pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/20—Feeding/conveying devices
- F23K2203/201—Feeding/conveying devices using pneumatic means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Feeding And Controlling Fuel (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
The invention relates to a method and to a system for homogenizing and controlling the solid fuels delivered pneumatically using dense flow conveyance to a gasifier for generating syngas, configured such that considerably homogenized feeding of the coal to the combustion chamber is enabled, wherein the short-term fluctuations are minimized and the gasification quality is thereby improved and control of the coal quantities to the combustion chamber are configured more effectively. Said object is achieved in that the fine-grained to powdered fuel is first delivered from a storage container (1) positioned below the combustion chamber level to a level above the combustion chamber level, and subsequently homogenized in a line directed downward toward the combustion chamber (4a, 4b).
Description
Technical field
The present invention relates to a kind of method that the solid fuel that utilizes dense-phase flow to carry pneumatic conveying to enter to be used to the gasifier that produces forming gas is carried out homogenising and adjusting.
Background technology
For example in DE 102,005 47 583 A, put down in writing the conveying that adjusting is arranged of fuel dust in entrained flow gasifiers.Here known, fuel also reacts conversion in the burner of substantial horizontal orientation to be installed in the vertical gasifier wall, wherein by the (＜0.5mm) fuel that constitutes of fuel particle meticulous pulverizing or dust-like, for example coal, petroleum coke, bio-waste and other fuel react with oxygen containing gasifying agent under the temperature that is being higher than the molten slag fusing point under the pressure that improves.
By the known a kind of method and apparatus that is used for carrying the pneumatic conveying bulk cargo of WO 2006/015702 A1 by dense-phase flow.
When enforcement was high-pressure gasified, the fuel of carbon containing can react with oxygen containing gas, and therefore wherein oxygen containing gas obtained hydrogeneous and product gas carbon monoxide with the ratio input of stoichiometry deficiency.In order to realize high fuel conversion and high efficiency, fuel-oxygen proportion should be limited in a very narrow scope.
Usually use the burner with coaxial channel in high-pressure gasified, wherein the mixing of Shu Ru medium is not in burner, but at first carries out in gasifier.For example had a detailed description an example of employed burner in high-pressure gasified equipment at EP 0 437698 A1.The fuel supply of burner is normally carried by dense-phase flow a little more than the receiving vessel of gasifier pressure from pressure and is carried out.Here such pneumatic conveying is called dense-phase flow and carries, wherein vector gas is not the form transfer the fuel particle with individual particle, but carries with the form of highdensity filler or stopper, and described filler or stopper are full of whole pipe cross section.The speed that dense-phase flow is carried is 4m/s to 6m/s normally, and wherein the solids content that air-flow is high still can realize high conveying capacity.It is the special protection material that dense-phase flow is carried, and particularly is difficult for breaking down for viscosity or moist convey materials.
The quality of gasification mainly is the uniformity influence by supplying to the coal of burner.Utilize measuring technique to detect and pay attention in the change of long period at interval (for example get involved or change employed coal etc.) by the adjusting of having a mind to, and to carrying the very fluctuation of short time of quality (carrying density and transporting velocity) not compensate.
Because dense-phase flow is carried the gas/solid mixture that relates to fluidisation in a broad sense, density and speed can occur for the common fluctuation of backset bed.This fluctuation can only be by indirect measure, and the design that for example enters the induction system of carrier pipe is controlled.Known in addition, the depositional phenomenon of solid appears at the longer horizontal part Duan Zhonghui of carrier pipe, and it minimizes by additional gas supply usually.When pipeline upwards distributes again, can realize further homogenising.
Because space requirement and device specific set-up mode, the receiving vessel of burner being supplied via carrier pipe is usually located at " below " of equipment rack, and burner is because the vertical version of gasifier is positioned at higher level significantly.Receiving vessel is arranged on " below " helps cost, especially when the essential fuel lockage that enters receiving vessel therefore based on gravity current and must be arranged on the top of receiving vessel the time.
So far, the pipeline that conveyance conduit leads to burner distribute from D score to " on " realize that towards burner plane and flatly lead to the tube connector joint of burner here mostly, coal is from entering burner here.
Summary of the invention
The objective of the invention is, design foregoing method like this, make it possible to obvious homogenising ground to burner supply coal, the fluctuation of short time is minimized and improve the gasification quality thus, and will get more effective the adjusted design of the coal amount that is supplied to burner.
According to the present invention, utilize the method for the described type of beginning to realize described purpose like this, at first fine grained to the fuel of dust-like is transported to a level that is higher than burner plane from the receiving vessel that is positioned at the burner plane below, in the pipeline of burner orientation, makes described fuel homogenising downwards then.
Verified, the uniformity by the fuel/air mixture of carrying in dense-phase flow realized by method scheme of the present invention obviously is better than the conveying for example undertaken by horizontally extending pipeline.By the homogenising in the down-comer of burner front, fuel particle is wherein used presumable bubble in the fuel filling mixture owing to centrifugal force quickens in the process that descends.
Each embodiment is obtained by each dependent claims.Can set thus, carry out described homogenising downwards in directed pipeline, the length of this pipeline is 5 times of pipe diameter at least.
What confirmed to suit is, fuel is homogenising in a down-comer of being derived by a bend pipe, wherein this down-comer becomes with vertical curve＜20 ° angle, be preferably 0 ° orientation.
According to the material that uses, down-comer also may be selected to the claimed situation that is different from here with respect to the adjustable range of vertical curve, importantly realizes homogenising in down-comer.
Another suitable embodiment according to the present invention is, for regulate fuel flow, to fuel stream supply gas, wherein not long ago or in burner mixes at this.
Cause dilution by in the fuel stream of carrying with dense-phase flow, adding assist gas, promptly carry density to reduce.Although the speed of diluted fuel can improve, the influence that density diminishes is bigger, so flow can diminish.
Example:
Utilize dense-phase flow to carry the density that will have to be 400kg/m
3With speed be that the fuel of 5m/s is transported in the gasifier by burner with 10kg/s.Friction and conveying upwards form the pressure loss of 100kPa in pipeline.In burner, form the pressure loss of 20kPa owing to the further acceleration of friction and suspension.In order to reduce flow, before burner, directly assist gas is imported fuel channel, volume flow is near double thus.The pressure loss in the fuel channel of burner is also therefore double.Because fuel channel has only 2m long, therefore just is full of by diluted fuel after 0.2 second.This section after the short time fuel flow rate diminish.
This example shows, can adjust fuel flow rate very fast.Adjustable range is subjected to required gas flow and corrodes and the restriction of conditional fuel flow rate in the burner internal cause.Utilize this method can make fuel flow rate change+/-10% in common application scenario.
Description of drawings
Below the present invention is described in detail for example with reference to the accompanying drawings.
Fig. 1 illustrates schematic device line figure.
Fig. 2 amplifies the part that the zone of burner in the gasifier wall that schematically shows that is not shown specifically is shown.
The specific embodiment
Fig. 1 illustrates from receiving vessel 1 to gasifier the dense-phase flow of 3 burner 4a, 4b and carries 2a and 2b.The outlet of receiving vessel is lower than burner, thereby fuel should be by level and upwards carried.But in order to realize that uniform fuel suspends, at first fuel to be directed to more than the burner plane, turn to the back in a homogenising in the long down-comer of 3m for example then.Nearby turn to before the pipe burner, so that with fuel level ground input burner with assist gas 11a, 11b input channel.Import oxygen containing gas 5a, 5b and braking gas/mitigation gas (Moderationsgas) 6a, 6b to burner equally, utilize described gas control gasification parameter.
Assist gas 11a, 11b can directly import the fuel channel of burner or burner alternatively.
Fig. 2 illustrates an optional embodiment of described method.Dense-phase flow carries 2 to be imported into vertical down-comer in a bend pipe.Before vertically-oriented burner tube joint 12, with assist gas 11 or braking gas 6, for example CO
2Part input gas gatherer 10, carry density and fuel stream to reduce.
Claims (according to the modification of the 19th of treaty)
1. one kind to carrying pneumatic conveying with dense-phase flow, enter the method that the solid fuel of the gasifier that is used for producing forming gas carries out homogenising and adjusting, wherein at first fine grained to the fuel of dust-like is transported to a level that is higher than burner plane from the receiving vessel that is positioned at the burner plane below, in the pipeline of burner orientation, make described fuel homogenising downwards then, for regulate fuel flow, to fuel stream supply gas, wherein not long ago or in burner mixed at this, particularly for the adjustment in the gasifier, at least a portion (braking gas) of the gas that adds in the gasifier is imported the fuel of being carried.
2. the method for claim 1 is characterized by: carry out described homogenising downwards in directed pipeline, the length of this pipeline is 5 times of pipe diameter at least.
3. method as claimed in claim 1 or 2 is characterized by: fuel is homogenising in a down-comer of being derived by a bend pipe, wherein this down-comer becomes with vertical curve＜20 ° angle, be preferably 0 ° orientation.
4. the method according to any one of the preceding claims is characterized by: add additional gas, as the mixture of nitrogen, carbon dioxide, steam, other inert gas or above gas.
5. method as claimed in claim 4 is characterized by: via importing described additional gas near the pipe joint next-door neighbour burner.
6. equipment to carrying solid fuel pneumatic conveying, that enter the gasifier (3) that is used for producing forming gas to carry out homogenising and adjusting with dense-phase flow, especially for the equipment of implementing each described method in the claim as described above, it is characterized by: be provided with burner (4 from receiving vessel (1) to gasifier (3), 4a, dense-phase flow carrier pipe (2 4b), 2a, 2b), wherein the end regions in related burner (4) front of dense-phase flow carrier pipe (2) is vertically located.
7. equipment as claimed in claim 6 is characterized by: the length of vertical dense-phase flow pipeline section is 5 times of dense-phase flow pipe diameter at least.
Claims (9)
1. method to carry solid fuel pneumatic conveying, that enter the gasifier that is used for producing forming gas to carry out homogenising and adjusting with dense-phase flow, it is characterized by: at first fine grained to the fuel of dust-like is transported to a level that is higher than burner plane from the receiving vessel that is positioned at the burner plane below, in the pipeline of burner orientation, makes described fuel homogenising downwards then.
2. the method for claim 1 is characterized by: carry out described homogenising downwards in directed pipeline, the length of this pipeline is 5 times of pipe diameter at least.
3. method as claimed in claim 1 or 2 is characterized by: fuel is homogenising in a down-comer of being derived by a bend pipe, wherein this down-comer becomes with vertical curve＜20 ° angle, be preferably 0 ° orientation.
4. as claim 1,2 or 3 described methods, it is characterized by:,, wherein not long ago or in burner mixed at this to fuel stream supply gas for regulate fuel flow.
5. the method according to any one of the preceding claims is characterized by: particularly for the adjustment in the gasifier, at least a portion (braking gas) of the gas that adds in the gasifier is imported the fuel of being carried.
6. the method according to any one of the preceding claims is characterized by: add additional gas, as the mixture of nitrogen, carbon dioxide, steam, other inert gas or above gas.
7. method as claimed in claim 6 is characterized by: via importing described additional gas near the pipe joint next-door neighbour burner.
8. equipment to carrying solid fuel pneumatic conveying, that enter the gasifier (3) that is used for producing forming gas to carry out homogenising and adjusting with dense-phase flow, especially for the equipment of implementing each described method in the claim as described above, it is characterized by: be provided with burner (4 from receiving vessel (1) to gasifier (3), 4a, dense-phase flow carrier pipe (2 4b), 2a, 2b), wherein the end regions in corresponding burner (4) front of dense-phase flow carrier pipe (2) is vertically located.
9. equipment as claimed in claim 8 is characterized by: the length of vertical dense-phase flow pipeline section is 5 times of dense-phase flow pipe diameter at least.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008063505.7 | 2008-12-17 | ||
| DE102008063505A DE102008063505A1 (en) | 2008-12-17 | 2008-12-17 | Process for equalizing the production of fuels in a gasifier for the production of synthesis gas |
| PCT/EP2009/008268 WO2010075911A1 (en) | 2008-12-17 | 2009-11-20 | Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102257322A true CN102257322A (en) | 2011-11-23 |
Family
ID=42101968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801504582A Pending CN102257322A (en) | 2008-12-17 | 2009-11-20 | Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US20110277673A1 (en) |
| EP (1) | EP2359060A1 (en) |
| KR (1) | KR20110094308A (en) |
| CN (1) | CN102257322A (en) |
| AP (1) | AP2011005727A0 (en) |
| AU (1) | AU2009335360A1 (en) |
| BR (1) | BRPI0923040A2 (en) |
| CA (1) | CA2747298A1 (en) |
| CU (1) | CU20110125A7 (en) |
| DE (1) | DE102008063505A1 (en) |
| RU (1) | RU2011129566A (en) |
| TW (1) | TW201030138A (en) |
| UA (1) | UA103213C2 (en) |
| WO (1) | WO2010075911A1 (en) |
| ZA (1) | ZA201105161B (en) |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1924123A (en) * | 1928-10-26 | 1933-08-29 | Joseph E Kennedy | Means for feeding pulverized fuel to furnaces |
| US2805897A (en) * | 1954-02-23 | 1957-09-10 | Bituminous Coal Research | Pneumatic fluidized material handling system |
| US3707172A (en) * | 1971-01-25 | 1972-12-26 | Kaisuji Obara | Automatic apparatus for packaging powdered material with uniform bag weight and with dust-free operation |
| US4173189A (en) * | 1977-01-21 | 1979-11-06 | Combustion Engineering, Inc. | Boiler cold start using pulverized coal in ignitor burners |
| US4515503A (en) * | 1981-03-09 | 1985-05-07 | Macawber Engineering Limited | Method and apparatus for unblocking conveying pipes for particulate material |
| DD207122A3 (en) * | 1981-09-22 | 1984-02-15 | Norbert Beiermann | METHOD OF MEASURING THE SOLIDS MASS FLOW |
| US4552490A (en) * | 1983-04-07 | 1985-11-12 | Foster Wheeler Energy Corporation | Solids feed control valve assembly |
| DE59000845D1 (en) | 1989-12-19 | 1993-03-18 | Krupp Koppers Gmbh | METHOD FOR OPERATING A PLANT FOR GASIFYING SOLID FUELS. |
| SE501018C2 (en) * | 1992-03-06 | 1994-10-24 | Abb Carbon Ab | Method and apparatus for feeding granular material into a pressurized container |
| US5463967A (en) * | 1994-07-21 | 1995-11-07 | Airflow Sciences Corporation | Static mixer device for improving homogeneity of a characteristic of a mixture stream created from fluid streams separately entering the device |
| US5657704A (en) * | 1996-01-23 | 1997-08-19 | The Babcock & Wilcox Company | Continuous high pressure solids pump system |
| FR2848641B1 (en) * | 2002-12-11 | 2005-12-16 | Alstom Switzerland Ltd | INDIRECT HEATING SYSTEM WITH VALORIZATION OF ULTRA FINE FUEL PARTICLES |
| DE102004003364A1 (en) * | 2004-01-22 | 2005-08-11 | Wacker-Chemie Gmbh | Device for transporting highly dispersed powders and process for their filling and emptying |
| US7231947B2 (en) * | 2004-06-08 | 2007-06-19 | The Young Industries, Inc. | System for pneumatically conveying bulk materials with improved discharge arrangement |
| EP1623941A1 (en) * | 2004-08-05 | 2006-02-08 | Alcan Technology & Management Ltd. | System and method for pneumatically conveying of free-flowing products in a dense flow |
| US7416573B2 (en) * | 2005-02-23 | 2008-08-26 | Blender Products, Inc. | Method and apparatus for suppressing sparks |
| DE102005047583C5 (en) | 2005-10-04 | 2016-07-07 | Siemens Aktiengesellschaft | Method and device for the controlled supply of fuel dust into an entrained flow gasifier |
| US7790840B2 (en) * | 2006-05-24 | 2010-09-07 | Eastman Chemical Company | Crystallizing conveyor |
| US20080110090A1 (en) * | 2006-11-15 | 2008-05-15 | C166, An Llc Registered In Florida | Gasification of fuel in a slagging gasifier |
| CA2689855C (en) * | 2009-03-24 | 2011-01-04 | Recycling International Petroleum Products Inc. | Method of reclaiming carbonaceous materials from scrap tires and products derived therefrom |
-
2008
- 2008-12-17 DE DE102008063505A patent/DE102008063505A1/en not_active Withdrawn
-
2009
- 2009-11-20 AU AU2009335360A patent/AU2009335360A1/en not_active Abandoned
- 2009-11-20 UA UAA201108856A patent/UA103213C2/en unknown
- 2009-11-20 KR KR1020117013583A patent/KR20110094308A/en not_active Application Discontinuation
- 2009-11-20 US US12/998,918 patent/US20110277673A1/en not_active Abandoned
- 2009-11-20 WO PCT/EP2009/008268 patent/WO2010075911A1/en active Application Filing
- 2009-11-20 CA CA2747298A patent/CA2747298A1/en not_active Abandoned
- 2009-11-20 RU RU2011129566/06A patent/RU2011129566A/en not_active Application Discontinuation
- 2009-11-20 AP AP2011005727A patent/AP2011005727A0/en unknown
- 2009-11-20 EP EP09760745A patent/EP2359060A1/en not_active Withdrawn
- 2009-11-20 CN CN2009801504582A patent/CN102257322A/en active Pending
- 2009-11-20 BR BRPI0923040A patent/BRPI0923040A2/en not_active IP Right Cessation
- 2009-12-16 TW TW098143099A patent/TW201030138A/en unknown
-
2011
- 2011-06-02 CU CU20110125A patent/CU20110125A7/en unknown
- 2011-07-13 ZA ZA2011/05161A patent/ZA201105161B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110094308A (en) | 2011-08-23 |
| DE102008063505A1 (en) | 2010-07-01 |
| BRPI0923040A2 (en) | 2015-12-15 |
| UA103213C2 (en) | 2013-09-25 |
| CA2747298A1 (en) | 2010-07-08 |
| WO2010075911A4 (en) | 2010-08-26 |
| US20110277673A1 (en) | 2011-11-17 |
| EP2359060A1 (en) | 2011-08-24 |
| ZA201105161B (en) | 2012-03-28 |
| AP2011005727A0 (en) | 2011-06-30 |
| WO2010075911A1 (en) | 2010-07-08 |
| TW201030138A (en) | 2010-08-16 |
| CU20110125A7 (en) | 2012-06-21 |
| RU2011129566A (en) | 2013-01-27 |
| AU2009335360A1 (en) | 2010-07-08 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111123 |