CN102278880A - Coal gas top-combustion-type high-temperature energy-saving interlinked kiln - Google Patents
Coal gas top-combustion-type high-temperature energy-saving interlinked kiln Download PDFInfo
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- CN102278880A CN102278880A CN2011102232226A CN201110223222A CN102278880A CN 102278880 A CN102278880 A CN 102278880A CN 2011102232226 A CN2011102232226 A CN 2011102232226A CN 201110223222 A CN201110223222 A CN 201110223222A CN 102278880 A CN102278880 A CN 102278880A
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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
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Abstract
The invention discloses a coal gas top-combustion-type high-temperature energy-saving interlinked kiln which comprises at least one single kiln, a combustor, kiln bottom heat exchangers and a flue gas recirculation system which are arranged on the single kiln. The interlinked kiln is characterized in that the combustor is a vertical ceramic combustor, and is arranged the central part of the arch top of a kiln body; the kiln bottom heat exchangers are tubular ceramic heat exchangers, and are respectively installed in an annular gas flue, a main gas flue and a branch gas flue at the bottom of the kiln; the kiln wall of the kiln body is of a hollow cavity structure; the hollow cavity bottom part of the kiln wall is communicated with a cool air inlet which is arranged at the bottom of a furnace; and the hollow cavity top part of the kiln wall is communicated with a hot air outlet which is arranged at the upper part of the outer wall of the kiln wall through a hot air pipeline.
Description
Technical field
The present invention relates to a kind of high temperature calcining kiln that is applicable to pottery, refractories industry, relate to the energy-conservation a chain of kiln of a kind of coal gas top ignition high temperature specifically.
Background technology
At present, pottery, refractories industry high temperature calcining kiln generally mostly are tunnel cave and down-draft kiln.Tunnel cave is continuous calcining kiln, utilizes countercurrent action, has the cycle weak point, and output is big, quality height, heat utilization efficiency height, the characteristics that the maintenance of heat and afterheat utilization are good.Shortcoming is that calcining system should not arbitrarily change, and generally only is applicable to large batch of production and to the essentially identical goods of calcining system requirement, flexibility is relatively poor.Down-draft kiln is a kind of step kiln, flame comes out to go upward to the process on kiln top from bocca again, by convection current, radiation heat is passed to burned product, be folded to descending then, convection current again when descending, radiation are carried out once heating fully comprehensively to goods, the heating of goods is relatively more abundant, even, and adaptability is very strong, can regulate firing temperature according to different goods.But shortcoming is a flame after the kiln top is descending, and promptly through flue, chimney is discharged, and discharge temperature is very high, and thermal losses is big, is step in addition, the UTILIZATION OF VESIDUAL HEAT IN difficulty; In addition, bocca is arranged on the kiln wall or place, arch angle is bigger to kiln body (kiln top) structure influence, can not burn high temperature.How to take into account the advantage of tunnel cave and down-draft kiln and overcome its shortcoming and realize burning till fast, energy-saving, emission-reducing, environment friendly is the developing direction of the high temperature burning kiln of current pottery, anti-material industry.
Summary of the invention
It is the energy-conservation a chain of kiln of coal gas top ignition high temperature of producer gas that purpose of the present invention provides a kind of fuel at existing weak point in the above-mentioned existing kiln technology just.This chain of rings kiln can realize that waste heat, useless flue gas make full use of, and realizes combustion air, the two preheatings of semi-finished product, reaches fast and burns till, improves kiln service life and energy-saving, emission-reducing, environment friendly purpose.
Purpose of the present invention can be achieved through the following technical solutions:
The energy-conservation a chain of kiln of coal gas top ignition high temperature of the present invention comprises at least one monomer kiln, and is arranged on heat exchanger and flue gas recirculation system at the bottom of burner on the monomer kiln, the kiln; Described burner is the vertical type ceramic burner, is arranged on the vault center position of kiln body; Heat exchanger is pipe heat exchanger (adopts ceramic material form) at the bottom of the described kiln, is installed in respectively in annular flue at the bottom of the kiln, flue collector, the branch flue, can realize combustion air is preheated to more than 850 ℃; The kiln wall of kiln body is the hollow cavity structure; The hollow cavity bottom of described kiln wall is connected with the cold air air inlet that is arranged on furnace bottom, the hollow cavity top of described kiln wall is connected with the hot-blast outlet that is arranged on kiln wall outer wall top by hot air duct, cold air enters from being arranged on the undergrate blast mouth, send from furnace wall top hot-blast outlet, the kiln body heat content is taken away in circulation, the preheating cold air reduces temperature of furnace wall.
The coal gas of the burner of vertical type ceramic described in the present invention and the air inlet mouth of pipe of combustion air are separately positioned on the burner both sides, and respectively with around the combustion chamber symmetrically arranged by the air circuit of semi-circular structure independently and independently the water conservancy diversion circuit formed of the coal gas circuit of semi-circular structure be connected, on described air circuit, coal gas circuit, be provided with several rotational flow air spouts that are connected with the combustion chamber, eddy flow gas port in uniform mode respectively; Described air circuit, coal gas circuit volume equate, and are positioned at the same cross section of burner outer wall.Combustion air, coal gas enter combustion chambers burn by air port and gas port after pipeline enters separately independent circuit.
A chain of kiln described in the present invention is to be combined by many monomer kiln chains of rings, is interconnected by combustion-supporting air channel and flue between each monomer kiln and realizes a chain of combination; Every monomer kiln is provided with two gas approach and an exhanst gas outlet, and passes through valve regulated.
Beneficial effect of the present invention is as follows:
The present invention not only can make and burn till product quality and be improved, and can make the unit product thermal energy consumption reduce compared to existing technology.Especially compare with down-draft kiln, its fractional energy savings can reach more than 50%, sees from reality burning stove situation to make monomer kiln furnace temperature in 24 hours reach 1650 ℃.
Description of drawings
Fig. 1 is a furnace binding schematic diagram of the present invention.
Fig. 2 is a furnace bottom heat exchanger schematic diagram of the present invention.
Fig. 3 is a flue schematic diagram of the present invention.
Fig. 4 is at the bottom of the kiln of the present invention and kiln wall heat exchanger schematic diagram.
Fig. 5 is ceramic burner air of the present invention, coal gas mixing eddy flow schematic diagram.
Sequence number is as follows among the figure: 1-monomer kiln; 2-burner; 3-combustion chamber; 4-gas inlet mouth of pipe; The 5---combustion air air inlet mouth of pipe; The vault of 6-kiln body; 7-rotational flow air spout; 8-eddy flow gas port; 9-kiln wall; The 10--hollow cavity; The 11--warm-air pipe; 12--hot-blast outlet; Saturating fire hole at the bottom of 13-kiln; Heat exchanger at the bottom of 14 kilns; The outlet of 15-combustion air; The import of 16-cold wind; 17-flue collector; 18-branch flue; 19 annular smoke flues; 20-furnace bottom load bearing wall; 21-smoke inlet; 22-exhanst gas outlet; The 23--Flue valve.
The specific embodiment
The present invention is described further below with reference to embodiment (accompanying drawing):
Shown in Fig. 1,2,4, the energy-conservation a chain of kiln of coal gas top ignition high temperature of the present invention comprises at least one monomer kiln (1), and is arranged on heat exchanger (14) and flue gas recirculation system at the bottom of burner (2) on the monomer kiln, the kiln; Described burner (2) is the vertical type ceramic burner, is arranged on the vault center position of kiln body; The pipe heat exchanger of heat exchanger at the bottom of the described kiln (14) for adopting ceramic material to form is installed in respectively in annular flue (19) at the bottom of the kiln, flue collector (17), the branch flue (18), can realize combustion air is preheated to more than 850 ℃.
The kiln wall of kiln body is the hollow cavity structure; The hollow cavity of described kiln wall (10) bottom is connected with the cold air air inlet (16) that is arranged on furnace bottom, the hollow cavity of described kiln wall (10) top is connected with the hot-blast outlet (12) that is arranged on kiln wall outer wall top by hot air duct (11), cold air enters from being arranged on the undergrate blast mouth, send from furnace wall top hot-blast outlet, the kiln body heat content is taken away in circulation, the preheating cold air reduces temperature of furnace wall.Adopt this technology to take away part kiln body heat content, not only can the preheating cold air, play insulation and preheating double action.Also because furnace wall masonry serviceability temperature reduces, and the specification requirement of used furnace lining material can suitably be relaxed, when improving service life, can also reduce the process cost simultaneously.
The gas inlet mouth of pipe (4) and the combustion air air inlet mouth of pipe (5) of the burner of vertical type ceramic described in the present invention (2) are separately positioned on the burner both sides, and respectively with around combustion chamber (3) symmetrically arranged by the air circuit of semi-circular structure independently and independently the water conservancy diversion circuit formed of the coal gas circuit of semi-circular structure be connected, on described air circuit, coal gas circuit, be provided with several rotational flow air spouts (7) that are connected with the combustion chamber, eddy flow gas port (8) (referring to Fig. 5) in uniform mode respectively; Described air circuit, coal gas circuit volume equate, and are positioned at the same cross section of burner outer wall.Combustion air, coal gas enter combustion chambers burn by air port and gas port after pipeline enters separately independent circuit.The producer gas that the burner of said structure can be lower with pressure and tar content is higher mixes the back during fast through bigger eddy flow gas port and forms the multiply air-flow and be mixed into the combustion space and fully burn with preheated air, the high-temperature flue gas that produces is then sprawled downwards by vault inner space shape, form rational primary flow field distribution, under the flue draft effect of uniform fire hole at the bottom of the kiln, form stabilized uniform flowing temperature field in the kiln, very favourable to evenly burning till of goods.
As shown in Figure 3, a chain of kiln described in the present invention is to be combined by many monomer kiln chains of rings, is interconnected by combustion-supporting air channel and flue between each monomer kiln and realizes a chain of combination; Every monomer kiln is provided with two gas approach (21) and an exhanst gas outlet (22), and regulates by valve (23).
More specifically say: the flame of monomer kiln of the present invention is discharged through the flue chimney after kiln top is descending, burns till quality for guaranteeing kiln bottom goods, temperature even can reach 1400 ℃ at the bottom of the kiln.To change sloping type furnace bottom be the flat pattern furnace bottom in order to make full use of fume afterheat the present invention, and at the flat pattern furnace bottom annular smoke flue, flue collector, branch flue are set.In annular smoke flue, flue collector, branch flue, be separately installed with the pipe heat exchanger that adopts ceramic material to form, cold air enters after the heat exchanger preheating from being arranged on undergrate blast mouth (16), send the preheating of realization combustion air from hot-blast outlet, combustion air can be preheated to more than 850 ℃.
The enforcement of the technology of the present invention can with baked article not drying be respectively charged into first kiln, second kiln, the 3rd kiln of a chain of kiln ... when the first kiln heating product, the waste gas of its discharge preheating simultaneously second kiln, the 3rd kiln ... and while warm-up combustion-supporting air, when first klining became to reach temperature, combustion air was preheating to equivalent temperature, makes firing temperature be easy to reach and keep high temperature, goods in other kiln are able to drying simultaneously, discharge moisture and can be preheating to uniform temperature.When burning till, a coal gas just is easier to heat up and reach firing temperature fast.When burning second kiln, the 3rd kiln .... refractory product further is preheated, and the first kiln high temperature can be preheating to higher temperature to combustion air simultaneously.The temperature of second kiln reaches than first kiln is easier, so circulation.In view of this, can realize multiple a chain of group technology operation.
Claims (4)
1. energy-conservation a chain of kiln of coal gas top ignition high temperature, comprise at least one monomer kiln, and be arranged on heat exchanger (14) and flue gas recirculation system at the bottom of burner (2) on the monomer kiln, the kiln, it is characterized in that: described burner (2) is the vertical type ceramic burner, is arranged on the vault center position of kiln body; Heat exchanger at the bottom of the described kiln (14) is a pipe heat exchanger, is installed in respectively in annular flue (19) at the bottom of the kiln, flue collector (17), the branch flue (18); The kiln wall of kiln body is the hollow cavity structure; The hollow cavity of described kiln wall (10) bottom is connected with the cold air air inlet (16) that is arranged on furnace bottom, and the hollow cavity of described kiln wall (10) top is connected with the hot-blast outlet (12) that is arranged on kiln wall outer wall top by hot air duct (11).
2. a chain of kiln according to claim 1, it is characterized in that: the coal gas of described vertical type ceramic burner (2) and the air inlet mouth of pipe of combustion air are separately positioned on the burner both sides, and respectively with around the combustion chamber symmetrically arranged by the air circuit of semi-circular structure independently and independently the water conservancy diversion circuit formed of the coal gas circuit of semi-circular structure be connected, on described air circuit, coal gas circuit, be provided with several rotational flow air spouts that are connected with the combustion chamber, eddy flow gas port in uniform mode respectively.
3. a chain of kiln according to claim 1 is characterized in that: described air circuit, coal gas circuit volume equate, and are positioned at the same cross section of burner outer wall.
4. a chain of kiln according to claim 1 is characterized in that: described a chain of kiln is to be combined by many monomer kiln chains of rings, is interconnected by combustion-supporting air channel and flue between each monomer kiln and realizes a chain of combination; Every monomer kiln is provided with two gas approach (21) and an exhanst gas outlet (22), and regulates by valve (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102232226A CN102278880A (en) | 2011-08-05 | 2011-08-05 | Coal gas top-combustion-type high-temperature energy-saving interlinked kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102232226A CN102278880A (en) | 2011-08-05 | 2011-08-05 | Coal gas top-combustion-type high-temperature energy-saving interlinked kiln |
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| CN102278880A true CN102278880A (en) | 2011-12-14 |
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| CN2011102232226A Pending CN102278880A (en) | 2011-08-05 | 2011-08-05 | Coal gas top-combustion-type high-temperature energy-saving interlinked kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954360A (en) * | 2018-06-08 | 2018-12-07 | 浙江涌原新能科技股份有限公司 | A kind of novel energy-saving environment-friendly device |
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| CN1584059A (en) * | 2004-06-06 | 2005-02-23 | 王云龙 | Lotus form furnace and preparing method for sponge iron |
| JP2005221133A (en) * | 2004-02-05 | 2005-08-18 | Daido Steel Co Ltd | Heat exchanger and combustion furnace device using the same |
| CN201288198Y (en) * | 2008-11-04 | 2009-08-12 | 首钢总公司 | Multi-contact circle rotational flow top burning hot blast stove |
| JP4335831B2 (en) * | 2005-03-25 | 2009-09-30 | シンリュウ株式会社 | Smokeless pottery kiln |
| CN101585524A (en) * | 2008-05-20 | 2009-11-25 | 沈阳铝镁设计研究院 | Fugitive constituent and preheated air passage structure of tank type carbon calciner |
| CN202182629U (en) * | 2011-08-05 | 2012-04-04 | 巩义市金岭耐火材料有限公司 | Gas top combustion type high temperature energy saving interlink kiln |
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2011
- 2011-08-05 CN CN2011102232226A patent/CN102278880A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005221133A (en) * | 2004-02-05 | 2005-08-18 | Daido Steel Co Ltd | Heat exchanger and combustion furnace device using the same |
| CN1584059A (en) * | 2004-06-06 | 2005-02-23 | 王云龙 | Lotus form furnace and preparing method for sponge iron |
| JP4335831B2 (en) * | 2005-03-25 | 2009-09-30 | シンリュウ株式会社 | Smokeless pottery kiln |
| CN101585524A (en) * | 2008-05-20 | 2009-11-25 | 沈阳铝镁设计研究院 | Fugitive constituent and preheated air passage structure of tank type carbon calciner |
| CN201288198Y (en) * | 2008-11-04 | 2009-08-12 | 首钢总公司 | Multi-contact circle rotational flow top burning hot blast stove |
| CN202182629U (en) * | 2011-08-05 | 2012-04-04 | 巩义市金岭耐火材料有限公司 | Gas top combustion type high temperature energy saving interlink kiln |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954360A (en) * | 2018-06-08 | 2018-12-07 | 浙江涌原新能科技股份有限公司 | A kind of novel energy-saving environment-friendly device |
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Application publication date: 20111214 |