CN104949505A - Oxygen-enriched combustion roller kiln system - Google Patents
Oxygen-enriched combustion roller kiln system Download PDFInfo
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- CN104949505A CN104949505A CN201510269739.7A CN201510269739A CN104949505A CN 104949505 A CN104949505 A CN 104949505A CN 201510269739 A CN201510269739 A CN 201510269739A CN 104949505 A CN104949505 A CN 104949505A
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Abstract
The invention discloses an oxygen-enriched combustion roller kiln system which comprises a preheating chamber, a firing chamber and a cooling chamber. An oxygen-enriched nozzle comprises a fuel pipe, an air pipe and an oxygen pipe, an outlet of the oxygen pipe is communicated with the air pipe, and a mixing pipe is arranged on an outlet of the air pipe. A fuel pipe penetrates through the mixing pipe, the outlet end of the fuel pipe is located in the mixing pipe, a sprayer is arranged at the outlet end of the fuel pipe, and a burner is arranged at the outlet end of the mixing pipe. An outlet of a cooling draught fan is communicated with a preheating pipeline, and the preheating pipeline is communicated the cooling draught fan and enters the preheating chamber. The oxygen-enriched combustion roller kiln system is simple in structure, air and oxygen are mixed and then make full contact with fuel, the combustion effect is better, and the utilization rate is higher; the oxygen enrichment technology is adopted, the emission amount of oxynitride is less, energy consumption is saved effectively, meanwhile, the oxygen-enriched combustion roller kiln system is easy to operate, waste heat is utilized, losses of heat are reduced, energy consumption of production is reduced, cost is lowered, and the oxygen-enriched combustion roller kiln system is suitable for application and popularization.
Description
Technical field
The present invention relates to the facilities field of silicates goods, particularly a kind of oxygen-enriched combusting roller kilns system.
Background technology
Ceramic tile is with fire-resistant metal oxide and half-metal oxide, via the process of grinding, mixing, compacting, glazing, sintering, and the building of the porcelain of a kind of acid and alkali-resistance of formation or Shi Zhi etc. or the material of decoration, be always referred to as ceramic tile.Its raw material are many to be mixed by clay, quartz sand etc.
The production procedure of ceramic tile comprises: to select materials-preparation of powder-compressing-dry and stamp/ink-jet-fire-edging polishing-classification, packaging and warehousing, generally roller kilns are used at ablating work procedure, roller kilns are the kilns of continuous burnt also known as kiln at the bottom of roller, the tunnel cave using the roller rotated as base substrate delivery vehicle.Ceramic product is placed in the very close horizontal refractory roll in many bar intervals, and the rotation of roller rest makes pottery be sent to kiln tail from kiln hood, and roller kilns are widely used in burning till fast of the product such as ceramic substrate, chemical powder.At present, the roller kilns on market are mainly individual layer roller kilns, are divided into Electric heating and gas heating mode, have more ripe technology and be widely used.It fires mode is enter the upper and lower space of roller-way by flame, with product into contact and directly heating product, needs to pass into combustion air to reach to allow the object of full combustion of fuel.
Oxygen-enriched combustion technology is generally used for the fusing of glass in the smelting of non-ferrous metal, glass furnace, cupola furnace and foundry furnace, the oxygenation burning of internal combustion engine, gas generator and biomass economy, Litter burnings etc. are convenient, and in these fields, oxygen-enriched combustion technology has played extremely important effect.
Existing oxygen enrichment technology, generally separates fuel and combustion-supporting gas, and use different nozzles to launch, be done so that the burning of fuel is insufficient like this, fuel availability is low, and waste heat energy regenerating utilization rate is not enough simultaneously.
Summary of the invention
The object of this invention is to provide a kind of oxygen enrichment roller kilns, solve existing oxygen enrichment technology, the burning of fuel is insufficient, and fuel availability is low, the defect of waste heat energy regenerating utilization rate deficiency.
To achieve these goals, technical scheme of the present invention is: a kind of oxygen-enriched combusting roller kilns system, and roller kilns comprise preheating chamber, burn till room and cooling chamber, and cooling chamber is communicated with cooling air-introduced machine, and cooling chamber is communicated with cooling air blower; Burn till indoor and be provided with nozzle, nozzle is rich-oxygen nozzle, and rich-oxygen nozzle comprises cartridge, air hose, oxygen hose, and the import of cartridge connects burner, air hose inlet communication air cleaner, described oxygen hose inlet communication oxygen machine; Oxygen hose outlet air hose, the outlet of air hose is provided with mixing tube; Cartridge runs through mixing tube, and its port of export is in mixing tube, and the port of export of cartridge is provided with nozzle, and mixing tube is provided with burner in the one end near spray outlet; The outlet preheating pipe of cooling air-introduced machine, preheating pipe is communicated with preheating air-introduced machine, enters in preheating chamber.
Beneficial effect of the present invention: the outlet preheating pipe of cooling air-introduced machine, temperature of waste heat in cooling chamber is between 400 ~ 500 DEG C, waste heat gas can directly use as the preheating gas of preheating chamber, first preheating is carried out to ceramic tile, progressively improve firing temperature again and make ceramic tile progressively adaptive temperature change, and be unlikely to break because of shock heating; By adopting above-mentioned roller kilns rich-oxygen nozzle, the outlet of air hose and oxygen hose is provided with mixing tube, by air and oxygen mix, forms combustion-supporting gas, regulates oxygen concentration, along with the increase of oxygen content, and N in air
2reduce, the nitrogen oxide in the amount of flue gas emission of generation significantly reduces.A large amount of minimizings of the nitrogen oxide in flue gas, make the heat taken away in waste gas also reduce thereupon; Too increase the temperature of flame simultaneously, improve efficiency of combustion; Cartridge run through mixing tube, its port of export is arranged in mixing tube, and the port of export of cartridge is provided with shower nozzle, and outside during fuel combustion have a large amount of oxygen, the better effects if of burning; Structure of the present invention is simple, is fully contacted by air with after oxygen mix with fuel, and combustion efficiency is better, and the utilization rate of fuel is higher; The discharge capacity of nitrogen oxide is less, economize energy consumption effectively, and really realize the energy-saving and cost-reducing of ceramic industry, the present invention is simultaneously easy to operation, utilizes used heat, reduces the loss of heat, reduces the energy consumption of production simultaneously, reduce costs, be applicable to applying.
Preferably, the outlet of described cooling air-introduced machine is provided with temperature inductor, when the temperature of waste heat gas is not enough to the thermal source as preheating chamber time, directly enters heat exchanger, discharges finally by sack cleaner.
Preferably, the outlet of blower fan is equipped with electromagnetic flowmeter, according to the needs of preheating chamber heat, regulates the flow of used heat.
Preferably, the import of cartridge, air hose, oxygen hose is equipped with electromagnetic flowmeter, is convenient to regulate suitable oxygen concentration.
Preferably, oxygen concentration is best between 30 ~ 40%, and this is through by test of many times data verification, draws best oxygen ranges; In above-mentioned scope flame temperature is along with combustion air oxygen concentration increase and increase fast, comparatively remarkable when flame temperature rises to about 30%, tend towards stability afterwards, now combustion efficiency is best, and product percent of pass is high, and energy ezpenditure is minimum.After 40%, along with the further increase of oxygen concentration, the rising of flame temperature, facilitate fuel complete reaction more, and the tight arrangement between " dead angle " of kiln and material buttress reduces flue gas flow rate, add the holdup time of high-temperature flue gas, also the reversible reaction contributing to NO_x formation is carried out to the direction generating nitrogen oxide further, cause the loss of amount of heat.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of oxygen-enriched combusting roller kilns system of the present invention;
Fig. 2 is the rich-oxygen nozzle schematic diagram of oxygen-enriched combusting roller kilns system of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further details.
Reference numeral: burner 1; Preheating chamber 2; Rich-oxygen nozzle 3; Air cleaner 4; Oxygen machine 5; Burn till room 6; Cooling chamber 7; Preheating air-introduced machine a; Cooling air blower b; Cooling air-introduced machine c; Air hose 301; Oxygen hose 302; Cartridge 303; Mixing tube 304; Shower nozzle 305; Burner 306;
Process fluid: PA: air; OX: oxygen; FG: fuel.
As shown in Figure 1, oxygen-enriched combusting roller kilns system of the present invention, comprises roller kilns, and roller kilns comprise preheating chamber 2, burn till room 6 and cooling chamber 7, and cooling chamber 7 is communicated with cooling air-introduced machine c, and cooling chamber 7 is communicated with cooling air blower b; Burn till in room 6 and be provided with nozzle, the outlet preheating pipe of described cooling air-introduced machine c, described economizer bank is communicated with preheating air-introduced machine a, enters in preheating chamber 2.
As shown in Figure 2, nozzle is rich-oxygen nozzle 3, and rich-oxygen nozzle 3 comprises cartridge 303, air hose 301, oxygen hose 302, and the import of cartridge 303 connects burner 1, air hose 301 inlet communication air cleaner 4, oxygen hose 302 inlet communication oxygen machine 5; Oxygen hose 302 outlet air hose 301, the outlet of air hose 301 is provided with mixing tube 304; Cartridge 303 runs through mixing tube 304, and its port of export is in mixing tube 304, and the port of export of cartridge 303 is provided with shower nozzle 305, and one end that shower nozzle 305 is exporting near mixing tube 304 is provided with burner 306.
Beneficial effect of the present invention: the outlet economizer bank of cooling air-introduced machine c, temperature of waste heat in cooling chamber 7 is between 400 ~ 500 DEG C, waste heat gas can directly use as the preheating gas of preheating chamber 2, first preheating is carried out to ceramic tile, progressively improve firing temperature again and make ceramic tile progressively adaptive temperature change, and be unlikely to break because of shock heating; By adopting above-mentioned roller kilns rich-oxygen nozzle, the outlet of air hose 301 and oxygen hose 302 is provided with mixing tube 304, by air and oxygen mix, forms combustion-supporting gas, regulates oxygen concentration, along with the increase of oxygen content, and N in air
2reduce, the nitrogen oxide in the amount of flue gas emission of generation significantly reduces.A large amount of minimizings of the nitrogen oxide in flue gas, make the heat taken away in waste gas also reduce thereupon; Too increase the temperature of flame simultaneously, improve efficiency of combustion; Cartridge 303 run through mixing tube 304, its port of export is arranged in mixing tube 304, and the port of export of cartridge 303 is provided with shower nozzle 305, and outside during fuel combustion have a large amount of oxygen, the better effects if of burning; Structure of the present invention is simple, is fully contacted by air with after oxygen mix with fuel, and combustion efficiency is better, and the utilization rate of fuel is higher; Use oxygen enrichment technology, the discharge capacity of nitrogen oxide is less, economize energy consumption effectively, really realizes the energy-saving and cost-reducing of ceramic industry, the present invention is simultaneously easy to operation, utilizes used heat, reduces the loss of heat, reduce the energy consumption of production simultaneously, reduce costs, be applicable to applying.
As this programme further preferably, oxygen concentration be best between 30 ~ 40%, and this is through by test of many times data verification, draws the oxygen ranges of the best; In above-mentioned scope flame temperature is along with combustion air oxygen concentration increase and increase fast, comparatively remarkable when flame temperature rises to about 30%, tend towards stability afterwards, now combustion efficiency is best, and product percent of pass is high, and energy ezpenditure is minimum.After 40%, along with the further increase of oxygen concentration, the rising of flame temperature, facilitate fuel complete reaction more, and the tight arrangement between " dead angle " of kiln and material buttress reduces flue gas flow rate, add the holdup time of high-temperature flue gas, also the reversible reaction contributing to NO_x formation is carried out to the direction generating nitrogen oxide further, cause the loss of amount of heat.
Above-described is only the preferred embodiment of inventing; should be understood that; for a person skilled in the art; under the prerequisite not departing from structure of the present invention; some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.
Claims (5)
1. oxygen-enriched combusting roller kilns system, comprises roller kilns, and described roller kilns comprise preheating chamber, burn till room and cooling chamber, and described cooling chamber is communicated with cooling air-introduced machine, and described cooling chamber is communicated with cooling air blower; Described indoor of burning till are provided with nozzle, it is characterized in that: described nozzle is rich-oxygen nozzle, and described rich-oxygen nozzle comprises cartridge, air hose, oxygen hose, the import of described cartridge connects burner, described air hose inlet communication air cleaner, described oxygen hose inlet communication oxygen machine; Described oxygen hose outlet air hose, the outlet of described air hose is provided with mixing tube; Cartridge runs through mixing tube, and its port of export is in mixing tube, and the port of export of cartridge is provided with shower nozzle, and described mixing tube is provided with burner in the one end near spray outlet; The outlet preheating pipe of described cooling air-introduced machine, described preheating pipe is communicated with preheating air-introduced machine, enters in preheating chamber.
2. oxygen-enriched combusting roller kilns system as claimed in claim 1, is characterized in that: the outlet of described cooling air-introduced machine is provided with temperature inductor.
3. oxygen-enriched combusting roller kilns system as claimed in claim 1, is characterized in that: the outlet of described blower fan is equipped with electromagnetic flowmeter.
4. oxygen-enriched combusting roller kilns system as claimed in claim 1, is characterized in that: the import of described cartridge, air hose, oxygen hose is equipped with electromagnetic flowmeter.
5. oxygen-enriched combusting roller kilns system as claimed in claim 1, is characterized in that: described oxygen concentration is 30 ~ 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510269739.7A CN104949505A (en) | 2015-05-25 | 2015-05-25 | Oxygen-enriched combustion roller kiln system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510269739.7A CN104949505A (en) | 2015-05-25 | 2015-05-25 | Oxygen-enriched combustion roller kiln system |
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| CN201510269739.7A Pending CN104949505A (en) | 2015-05-25 | 2015-05-25 | Oxygen-enriched combustion roller kiln system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006640A (en) * | 2017-12-21 | 2018-05-08 | 靖江博鑫柯曼燃烧器制造有限公司 | One kind uses oxygen-enriched burner |
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| CN103940221A (en) * | 2013-01-23 | 2014-07-23 | 张志法 | Novel energy-saving kiln |
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| JP2015021148A (en) * | 2013-07-17 | 2015-02-02 | 株式会社神戸製鋼所 | Heating apparatus for object to be heated |
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101182217A (en) * | 2007-12-06 | 2008-05-21 | 武汉理工大学 | Rich-oxygen and pure oxygen burning roller-way kiln |
| CN201964765U (en) * | 2010-12-18 | 2011-09-07 | 佛山市中瓷万丰陶瓷设备有限公司 | Energy-saving building porcelain kiln with waste heat reclaiming system |
| CN201916905U (en) * | 2010-12-22 | 2011-08-03 | 武汉理工大学 | Double-gas-mixing type gas oxygen-enrichment energy-saving combustor for ceramic kiln |
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| CN203443336U (en) * | 2013-04-26 | 2014-02-19 | 武汉理工大学 | Pulse combustion control device for oxygen-enriched combustion ceramic roller kiln |
| JP2015021148A (en) * | 2013-07-17 | 2015-02-02 | 株式会社神戸製鋼所 | Heating apparatus for object to be heated |
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| CN108006640A (en) * | 2017-12-21 | 2018-05-08 | 靖江博鑫柯曼燃烧器制造有限公司 | One kind uses oxygen-enriched burner |
| CN108006640B (en) * | 2017-12-21 | 2024-02-13 | 靖江博鑫柯曼燃烧器制造有限公司 | Multipurpose oxygen-enriched burner |
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Application publication date: 20150930 |