CN101636617B - Melting process using the combustion of liquid and gaseous fuels - Google Patents
Melting process using the combustion of liquid and gaseous fuels Download PDFInfo
- Publication number
- CN101636617B CN101636617B CN200780047043.3A CN200780047043A CN101636617B CN 101636617 B CN101636617 B CN 101636617B CN 200780047043 A CN200780047043 A CN 200780047043A CN 101636617 B CN101636617 B CN 101636617B
- Authority
- CN
- China
- Prior art keywords
- fuel
- gas outlet
- flue gas
- oxy
- stove
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C1/00—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air
- F23C1/08—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air liquid and gaseous fuel
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
- F23C5/28—Disposition of burners to obtain flames in opposing directions, e.g. impacting flames
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2201/00—Staged combustion
- F23C2201/10—Furnace staging
- F23C2201/102—Furnace staging in horizontal direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/05081—Disposition of burners relative to each other creating specific heat patterns
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
Abstract
The invention relates to a process for melting a charge by means of oxy-fuel combustion burners in a furnace (1) that includes at least one upstream flue gas outlet (3), in which furnace, in the charge melting zone: the burners (41-44) placed close to the upstream flue gas outlet burn a liquid fuel; and at least one of the burners (51-54) placed far from the upstream flue gas outlet burns a gaseous fuel.
Description
Technical field
The present invention relates to the process/method that a kind of burner by combustion of liquid fuel and geseous fuel carrys out melting/melting batch.
Background technology
In industrial furnace, to the selection of fuel used kind, as the selection between liquid fuel within and Sweet natural gas, depend on several parameter.First parameter is fuel used working cost.Another parameter is the transmission ofenergy to furnace charge, and the flame of known Sweet natural gas is less than the flame radiaton of liquid fuel.Another parameter is the water vapor concentration that the burning above furnace charge produces, and this may have an impact to the quality of product.Finally, must consider pollutant emission, such as NOx or SOx, generally when using liquid fuel, this discharge can be greater than the situation using Sweet natural gas.
The married operation of two kinds of fuel is used to make to maximize the advantage of often kind of fuel and limit its shortcoming and become possibility.A lot of research is recently proposed different technique in order to improve the radiation of Flame of Natural Gas.Such as A.J.Faber and M.Van Kersbergen shows in " Glass technology Vol.46; No.2; April 2005 ", by increasing a small amount of diesel oil or passing through to spray the gas contributing to forming cigarette ash, as propylene or acetylene, the radiation capacity of Flame of Natural Gas can be improved in visible and near infrared scope.And the diesel oil amount of spraying keeps below fuel total flux 20%.A kind of liquid fuel that increases is develop a kind of injector used as atomizing gas by Sweet natural gas relative to the method for the ratio of Sweet natural gas.L.S.Messias, M.M.Dos Santos and H.F.D.Schettini proposes the example of the spraying gun of a kind of injection liquid of 50% and the Sweet natural gas of 50% in " Proceedings of Clean Air 2005; April 2005 ", and shows for air fuel flame, makes pollutant emission obviously to reduce---as oxynitride and oxysulfide---due to the use of this system.Such dual-fuel atomizer is also present in the situation of oxygen as the burner of fuel: B.Leroux, F.Lacas, P.Recourt and O.Delabroy describe in " Proceedings of AFRC-JFRCInternational symposium; Hawaii, September 2001 "-kind Sweet natural gas can be used as atomizing gas penetrate injector outward.But the injector of this several types is all devoted to oxy-fuel combustion, the narrow range of possible Sweet natural gas flow rate: the mass rate of Sweet natural gas generally maintains 15% to 30% of the mass rate of liquid fuel.Lower than 15%, then the quality be atomized becomes too mediocre and there is incomplete combustion.On the contrary, more than 30%, then make flame may become unstable because atomizing gas velocities is too high.
Summary of the invention
One object of the present invention is, solves the adaptive problem of described shortage of existing mixing oxygen fuel system.
For this purpose, the present invention relates to a kind of technique being carried out melting furnace charge in stove by oxy-fuel burner/full-oxygen combustion burner (oxy-fuel combustion burner), described stove comprises a charge melting zone and at least one upstream flue gas outlet, this charge melting zone is restricted to the district being positioned at the line upstream distinguishing solid material and melting material, this upstream flue gas outlet is arranged on one or more cross side of described stove, it is characterized in that, in charge melting zone:
The oxy-fuel burners combustion of liquid fuel that-contiguous described upstream flue gas outlet is arranged;
-at least one oxy-fuel burners burn gas fuel arranged away from described upstream flue gas outlet;
Wherein, described stove also comprises a heating zone and a fining cell, this heating zone is restricted to the district covered by the flame of oxy-fuel burners, and this heating zone comprises a part for charge melting zone and is adjacent to the district in downstream, charge melting zone, this fining cell is restricted to the district being positioned at downstream, heating zone, and this fining cell is not heated; In heating zone, closest to the oxy-fuel burners combustion of liquid fuel of fining cell.
Accompanying drawing explanation
By reading following description, other features and advantages of the present invention will be distincter.Implement concrete mode of the present invention and method is provided by nonrestrictive embodiment and illustrated by accompanying drawing, wherein:
-Fig. 1 implements the schematic diagram according to the stove of technique of the present invention;
-Fig. 2 implements a kind of alternative method according to technique of the present invention; With
-Fig. 3 implements the another kind of alternative method according to technique of the present invention.
Embodiment
Technique according to the present invention relates to and heats furnace charge by oxy-fuel burner, and that is burner uses the oxygenant containing oxygen rich gas.Term " oxygen rich gas " is interpreted as the gas that a kind of oxygen level is greater than 70%.This technique is carried out in a stove, and this stove comprises at least one combustion flue gas outlet in stove upstream portion.In this article, term " upstream " is interpreted as the part of the introducing of stove furnace charge to be heated, and term " downstream " is interpreted as that the part of furnace charge has been heated in the discharge of stove.On the end that waste gas outlet can be positioned at stove or one of them side.In general, the waste gas outlet of upstream is positioned at first 1/4th place of furnace length.The waste gas outlet of upstream is preferably placed on one or more side of stove.Stove can comprise one or more upstream flue gas outlet.In the case of several flue gas outlets, these waste gas outlets can be arranged on identical height or staggered arrangement along the length of stove.How to arrange according to the principle of burner of the present invention all applicable relative to all upstream outlet.Technique of the present invention relates to arranges described oxy-fuel burner according to the character of the fuel of oxy-fuel burner burning in stove.Like this, in the melting zone of stove:
The burner combustion liquid fuel that-contiguous upstream flue gas outlet is arranged.In this article, state: " burner that a contiguous element or district are arranged " of stove is interpreted as that burner and described element or district are less than 4m apart.Preferably, think that " burner that a contiguous element or district are arranged " refers to the burner being less than 8m with described element or district apart.In practice, technician selects 4 or 8m according to the total length of stove usually;
-away from upstream flue gas outlet arrange at least one burner combustion geseous fuel.Statement " burner away from an element or district are arranged " cannot not be interpreted as contiguously the burner in described element or described district, that is, burner and described element or described district are at a distance of at least 4m or even at least 8m, and this selection is carried out according to the total length of stove usually as described above ground.
Stove comprises 3 districts:
The melting zone of-stove, this melting zone is restricted to the district being positioned at the line upstream distinguishing solid material and melting material.Usually, for melten glass, melting zone extends on the upstream of first to the first/3rd 1/2nd representing stove;
-heating zone, the district that the flame that this heating zone is restricted to burned device covers, this heating zone comprises a part for melting zone and is adjacent to the district in downstream, melting zone;
-refining/purification section, this fining cell is restricted to the district being positioned at downstream, heating zone, and this fining cell is not heated.
According to a kind of modification of described technique, in heating zone, the burner combustible liquid fuel that contiguous fining cell is arranged.This modification makes may reduce close to the water vapor concentration levels of fining cell.
In addition, when stove comprises at least one downstream flue gas outlet:
The burner combustion liquid fuel that-contiguous downstream flue gas outlet is arranged;
-at least one burner combustion geseous fuel arranged away from downstream flue gas outlet.
Preferably, downstream flue gas outlet is arranged on last 1/3rd places of furnace length.
Optimal process according to the present invention is applicable to the stove that furnace charge is glass or enamel.Technique of the present invention is specially adapted to length at least 20m, preferably the glass furnace of at least 30m.
Fig. 1,2 and 3 show according to equipment and process of the present invention.
In FIG, for stove 1 is equipped:
-for introducing the charging machine 2 of the furnace charge treating melting;
-two upstream flue gas outlet 3; With
-eight oxy-fuel burners 41,42,43,44,51,52,53,54, or facing with each other or with staggered arranged in form.
According to the present invention, burner 41,42,43,44 combustion of liquid fuel that contiguous upstream flue gas outlet 3 is arranged, and away from burner 51,52,53,54 burn gas fuel that upstream flue gas outlet 3 is arranged.
In fig. 2, for stove 1 is equipped:
-for introducing the charging machine 2 of the furnace charge treating melting;
-two upstream flue gas outlet 3; With
-nine oxy-fuel burners 41,42,43,44,45,46,51,52,53, or facing with each other or with staggered arranged in form.
According to the present invention, burner 41,42,43,44 combustion of liquid fuel that contiguous upstream flue gas outlet 3 is arranged, and away from burner 51,52,53 burn gas fuel that upstream flue gas outlet 3 is arranged.In addition, close to burner 45 and 46 combustion of liquid fuel that fining cell 8 is arranged.
In figure 3, for stove 1 is equipped:
-for introducing the charging machine 2 of the furnace charge treating melting;
-two upstream flue gas outlet 3;
-two downstream flue gas outlet 7; With
-nine oxy-fuel burners 41,42,43,44,45,46,51,52,53, or facing with each other or with staggered arranged in form.
According to the present invention, burner 41,42,43,44 combustion of liquid fuel that contiguous upstream flue gas outlet 3 is arranged, and burner 51,52,53 burn gas fuel arranged away from upstream flue gas outlet 3 and away from downstream flue gas outlet 7.In addition, burner 45 and 46 combustion of liquid fuel that downstream flue gas outlet 7 is arranged is close to.
Implementing process as described above, can be combined the advantage of the flame of liquids and gases fuel in an optimal manner.Like this, although close to waste gas outlet, liquid fuel flame ensure the stable of described flame compared with Great inertia.In addition, because described flame is comparatively large to the transmission of furnace charge, make the temperature of the waste gas from these flames lower, energy balance is than the better off of installing gas fuel burner.Gaseous fuel burners itself is ensured by the mode of locating, and the waste gas from these flames stops the longer time thus guarantees the totally tansitive to furnace charge in stove.
Claims (3)
1. the method by oxy-fuel burners melting furnace charge in stove, described stove comprises a charge melting zone and at least one upstream flue gas outlet, this charge melting zone is restricted to the district being positioned at the line upstream distinguishing solid material and melting material, this upstream flue gas outlet is arranged on one or more cross side of described stove, it is characterized in that, in charge melting zone:
The oxy-fuel burners combustion of liquid fuel that-contiguous described upstream flue gas outlet is arranged;
-at least one oxy-fuel burners burn gas fuel arranged away from described upstream flue gas outlet;
Wherein, described stove also comprises a heating zone and a fining cell, this heating zone is restricted to the district covered by the flame of oxy-fuel burners, and this heating zone comprises a part for charge melting zone and is adjacent to the district in downstream, charge melting zone, this fining cell is restricted to the district being positioned at downstream, heating zone, and this fining cell is not heated; In heating zone, closest to the oxy-fuel burners combustion of liquid fuel of fining cell.
2. the method for claim 1, is characterized in that, described stove comprises at least one downstream flue gas outlet; And
The oxy-fuel burners combustion of liquid fuel that-contiguous described downstream flue gas outlet is arranged;
-at least one oxy-fuel burners burn gas fuel arranged away from described downstream flue gas outlet.
3. method as claimed in claim 1 or 2, it is characterized in that, described furnace charge is glass or enamel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0655735A FR2910594B1 (en) | 2006-12-20 | 2006-12-20 | FUSION PROCESS USING COMBUSTION OF LIQUID AND GASEOUS FUELS |
| FR06/55735 | 2006-12-20 | ||
| PCT/EP2007/064078 WO2008074780A1 (en) | 2006-12-20 | 2007-12-17 | Melting process using the combustion of liquid and gaseous fuels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101636617A CN101636617A (en) | 2010-01-27 |
| CN101636617B true CN101636617B (en) | 2015-05-06 |
Family
ID=38229394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780047043.3A Active CN101636617B (en) | 2006-12-20 | 2007-12-17 | Melting process using the combustion of liquid and gaseous fuels |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2095020A1 (en) |
| JP (1) | JP5490541B2 (en) |
| CN (1) | CN101636617B (en) |
| FR (1) | FR2910594B1 (en) |
| WO (1) | WO2008074780A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726005A (en) * | 2012-10-16 | 2014-04-16 | 深圳富泰宏精密工业有限公司 | Method for making enamel coating and product thereof |
| CN104061585B (en) * | 2013-06-28 | 2017-08-18 | 蚌埠凯盛工程技术有限公司 | Flat Glass Furnace double fuel mixed combustion automatic control system |
| CN109690189A (en) * | 2016-06-08 | 2019-04-26 | 福图姆股份公司 | The method and boiler of burning fuel |
| CN116398878B (en) * | 2023-06-01 | 2024-03-12 | 南京林普热能科技有限公司 | Combined type total oxygen combustion system for steel rolling heating furnace and combustion method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100400A (en) * | 1986-01-23 | 1987-08-05 | 索格股份公司 | glass melting furnace with improved efficiency |
| US6079229A (en) * | 1996-12-31 | 2000-06-27 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes George Claude | Process for improving the thermal profile of glass ovens |
| EP1627855A2 (en) * | 2004-08-16 | 2006-02-22 | Air Products And Chemicals, Inc. | Burner and Method for Combusting Fuels |
| CN1265118C (en) * | 2001-03-23 | 2006-07-19 | 维特罗环球有限公司 | Method and system for feeding and burning a pulverized fuel in a glass foundry oven and burner to be used therewith |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2294977A (en) * | 1940-07-02 | 1942-09-08 | James N Garrison | Heater |
| US3204611A (en) * | 1963-05-28 | 1965-09-07 | Phillips Petroleum Co | Firebox heat pattern in a furnace |
| US6519973B1 (en) * | 2000-03-23 | 2003-02-18 | Air Products And Chemicals, Inc. | Glass melting process and furnace therefor with oxy-fuel combustion over melting zone and air-fuel combustion over fining zone |
| JP4245424B2 (en) * | 2003-07-18 | 2009-03-25 | 日本エア・リキード株式会社 | Glass melting kiln |
| FR2890155B1 (en) * | 2005-08-25 | 2007-11-23 | Air Liquide | PREHEATING FUEL AND OXYBRUSTER FUEL FROM COMBUSTION AIR PREHEATING |
-
2006
- 2006-12-20 FR FR0655735A patent/FR2910594B1/en active Active
-
2007
- 2007-12-17 EP EP07857708A patent/EP2095020A1/en not_active Withdrawn
- 2007-12-17 WO PCT/EP2007/064078 patent/WO2008074780A1/en active Application Filing
- 2007-12-17 JP JP2009542024A patent/JP5490541B2/en active Active
- 2007-12-17 CN CN200780047043.3A patent/CN101636617B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100400A (en) * | 1986-01-23 | 1987-08-05 | 索格股份公司 | glass melting furnace with improved efficiency |
| US6079229A (en) * | 1996-12-31 | 2000-06-27 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes George Claude | Process for improving the thermal profile of glass ovens |
| CN1265118C (en) * | 2001-03-23 | 2006-07-19 | 维特罗环球有限公司 | Method and system for feeding and burning a pulverized fuel in a glass foundry oven and burner to be used therewith |
| EP1627855A2 (en) * | 2004-08-16 | 2006-02-22 | Air Products And Chemicals, Inc. | Burner and Method for Combusting Fuels |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5490541B2 (en) | 2014-05-14 |
| EP2095020A1 (en) | 2009-09-02 |
| FR2910594A1 (en) | 2008-06-27 |
| FR2910594B1 (en) | 2012-08-31 |
| JP2010513199A (en) | 2010-04-30 |
| WO2008074780A1 (en) | 2008-06-26 |
| CN101636617A (en) | 2010-01-27 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |