CN201462812U - Ore calcination kiln highly effective energy-saving burning system - Google Patents
Ore calcination kiln highly effective energy-saving burning system Download PDFInfo
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- CN201462812U CN201462812U CN2009200861255U CN200920086125U CN201462812U CN 201462812 U CN201462812 U CN 201462812U CN 2009200861255 U CN2009200861255 U CN 2009200861255U CN 200920086125 U CN200920086125 U CN 200920086125U CN 201462812 U CN201462812 U CN 201462812U
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Abstract
The utility model relates to an ore calcination kiln highly effective energy-saving burning system, and belongs to the field of ore raw material production devices. The burning system comprises an air blower, a draught fan, a control system and a heat accumulation heat exchange device, wherein each set of heat accumulation heat exchange device is composed of a change-over valve, two groups of heat exchange burner combinations and two groups of heat accumulators, wherein each burner combination is provided with a gas burner and two heat exchange burners, two heat exchange burners are respectively and correspondingly connected with the two heat accumulators, the burner combination is distributed and embedded in a wall on one side of a combustion chamber, a combustion-supporting air pipe and a smoke pipe are respectively communicated with the two heat exchange burners through the change-over valve and the heat accumulators, the design not only realizes mixing and burning between gas and combustion-supporting air in the combustion chamber on the structure with high burning temperature and rapid temperature rise speed, but also has even burning flame dispersion, additionally, the high temperature residual heat of gas after burning is fully utilized, the gas use efficiency is improved, energy can be saved by more than 10% compared with traditional calcination kilns, and furthermore the pollutant discharge can be lowered maximally, which is beneficial for atmosphere and environment.
Description
Technical field
The utility model efficient and energy-saving combustion system of ore calcining kiln belongs to ore production equipment field, is specifically related to the ore calcining kiln stove.
Background technology
Ore calcining kiln is with 800-1200 ℃ of high-temperature roasting of rawore stone process, and wherein the crystallization water and most of volatile component are removed, and produces the process units of grog finished product.Ore calcining kiln kiln body is the column shape of garden below diameter about 3 meters on, and it highly is about 15 meters, and the cylindrical of 10 meters on top is raw material silo, it below it combustion chamber of square structure, bottom taper chamber is the grog storehouse, and its kiln body of ore calcining kiln is elongated, and the bags is narrow.For a long time, ore calcining kiln follows traditional design, it is a kind of high energy consumption device, but the energy medium that general ore calcining kiln adopts is the mist of coal gas and combustion air, the coal gas of prior art employing at present is the coal gas of high temperature from producer, combustion air then is normal (low) warm air without preheating, the low temperature combustion air is to mix in burner with coal gas, when flame sprayed from burner, the normal temperature combustion air mixed with coal gas in narrow and small burner, and its diffusion mixed performance is poor, be difficult to mix, it is insufficient to burn, and greatly reduce the temperature of flame, and burner is fragile, cause the inefficient combustion condition of energy medium in the combustion chamber, a series of problems such as thereby directly cause energy utilization rate low, the grog output capacity is not high, and energy waste and economic benefit are not good.With the prior art ore calcining kiln is example, and a day is produced the magnesia unslacked kiln of 20 tons of finished products, and its ton finished product consumption coal is more than the 260kg, beyond doubt the high energy consumption product.Coal gas can not fully burn in the combustion chamber in addition, has produced the black flue gas that contains harmful substances such as CO, NO, sulfide in a large number, produces seriously polluted to environment.Therefore, innovative design ore calcining kiln structure improves the efficiency of combustion of ore calcining kiln combustion gas, saves the energy, reduces discharging, becomes the outer in the industry common critical problem of paying close attention to.
The utility model content
The purpose of this utility model provides a kind of efficient and energy-saving combustion system of ore calcining kiln; coal gas burner by independent split; combustion air nozzle structure and regenerative heat exchange control system; alternately make heat storage store the partly high temperature heat of combustion product gases; and carry out heat exchange with heat energy and the normal temperature combustion air that stores; use heating and send into the temperature of the combustion air of combustion chamber; after making the combustion gas sent into respectively by independent split burner and combustion air leave separately burner; in the combustion chamber, mix; burning; low with solution because of combustion air temperature; mix inhomogeneous and a series of problems that cause; thereby can not only significantly improve fuel gas buring efficient; reduce product energy consumption significantly; avoid energy waste; improve the input-output ratio of product; and improve burning condition and can make full combustion of fuel; reduce pollutant emission greatly, the favorable environment protection.
The purpose of this utility model is achieved through the following technical solutions:
The utility model efficient and energy-saving combustion system of ore calcining kiln, comprise air blast, air-introduced machine, pneumatic means, control system and regenerative heat exchange device, every cover regenerative heat exchange device is made up of four three-way diverter valves, two groups of burner combinations and two groups of corresponding heat storages thereof, every group of burner combination has a coal gas burner 4 and two heat exchange burner 6A, 6B, two corresponding respectively connections of heat exchange burner 6A, 6B two heat storage 5A, 5B; Two heat storage 5A, 5B of two groups of heat storage correspondences are connected with a pair of corresponding interface A, the B of reversal valve 3 respectively after the pipeline 9 of correspondence and 10 parallel connections respectively; Another of reversal valve 3 to corresponding interface C, D then respectively with air blast 1 and 2 corresponding connections of air-introduced machine, air-introduced machine outlet is connected by YZ in the middle part of tube connector 11 and the kiln body; Coal gas burner 4 is connected with the generation gaspipe line, the combustion chamber R of the corresponding respectively feeding ore calcining kiln of burner outlet of burner combination, and each burner outlet is downward-sloping, is 5 ° of-8 ° of angles with level.
The coal gas burner and the combustion air nozzle structure of independent split adopted in the utility model design on the one hand, make leave separately burner by its combustion gas of sending into respectively and combustion air after, in the combustion chamber, mix, burning; Adopt the regenerative heat exchange device on the other hand, by setting and control the commutation of four three-way diverter valves, the high-temperature flue gas periodicity controlled alternate that makes fractional combustion is by corresponding heat storage, make periodically alternately accumulation of heat and heat release of heat storage, and controlled make combustion air periodically correspondence pass through heat storage, in heat storage, be heated and be warming up to 800-1000 high temperature ℃, improved the temperature of combustion air greatly, promptly improved combustion reaction temperature, more heat energy have been discharged than the traditional combustion reaction, improved the burning condition in the combustion chamber, improved the flame dispersivity, combustion flame is dispersed evenly, make it to be full of equably whole combustion chamber, it is more abundant to burn, so significantly improve fuel gas buring efficient, improved programming rate in the stove, in addition, also will be through heat exchange, the combustion product gases that temperature has been reduced to below 150 ℃ reclaims the kiln body middle part that enters the relevant temperature district, has made full use of the high-temperature residual heat of burning back flue gas, therefore, the utility model improves fuel gas buring efficient, saves the energy, and is more energy-conservation more than 10% than traditional ore calcining kiln, the ton finished product 26kg that on average economizes on coal, every batch of production cycle of calcining kiln foreshortened to 3 hours by 3.5 hours, improved the input-output ratio of finished product, and discharged nitrous oxides was few, waste gas, waste heat discharge is few, reduced pollutant emission to greatest extent, favourable atmosphere, favorable environment.
Description of drawings
Fig. 1 disposes the ore calcining kiln structural representation of the utility model efficient and energy-saving combustion system
Fig. 2 the utility model high-temperature flue gas 0-20 controlled heat second heat storage 5B schematic diagram
Fig. 3 the utility model high-temperature flue gas 20-40 controlled heat second heat storage 5A schematic diagram
The specific embodiment
The utility model efficient and energy-saving combustion system of ore calcining kiln, comprise air blast, air-introduced machine, pneumatic means, control system and regenerative heat exchange device, every cover regenerative heat exchange device is made up of four three-way diverter valves, two groups of burner combinations and two groups of corresponding heat storages thereof, every group of burner combination has a coal gas burner 4 and two heat exchange burner 6A, 6B, two corresponding respectively connections of heat exchange burner 6A, 6B two heat storage 5A, 5B; Two heat storage 5A, 5B of two groups of heat storage correspondences are connected with a pair of corresponding interface A, the B of reversal valve 3 respectively after the pipeline 9 of correspondence and 10 parallel connections respectively; Another of reversal valve 3 to corresponding interface C, D then respectively with air blast 1 and 2 corresponding connections of air-introduced machine, air-introduced machine outlet is connected by in the middle part of tube connector 11 and the kiln body; Coal gas burner 4 with gaspipe line takes place is connected, the burner group distributes by " product " word and is inlaid in a side in the body of wall 8, the combustion chamber R of the corresponding respectively feeding ore calcining kiln of burner outlet of burner combination, each burner exports downward-sloping, is 5 ° of-8 ° of angles with level.
Coal gas burner is made with the high temperature resistant stainless steel material.The heat exchange burner is composited by steel casing and high strength refractory material liner.
Now in conjunction with the accompanying drawings, be example so that a cover efficient and energy-saving combustion system to be set, further specify the utility model the utility model efficient and energy-saving combustion system of ore calcining kiln and how to move:
According to the reversal valve commutation cycle of having set, for example the commutation cycle is 20 seconds, control device for opening, as shown in Figure 2, in 0-20 cycle second, the air that air blast 1 is sent into 9 enters the corresponding heat storage 5A of two groups of burner combinations by the road through the correspondence inlet of reversal valve 3, air is heated to about 800-1000 ℃ in heat storage 5A after, enter corresponding heat exchange burner 6A, simultaneously, coal gas takes place enter coal gas burner 4, enter the combustion chamber respectively from the preheating high temperature air of heat exchange burner 6A with from the coal gas of coal gas burner 4, in the combustion chamber, mix, burning, the high-temperature flue gas main flow of its burning partly becomes the high temperature heat source of firing ore and upwards enters raw material silo and fire ore, other has, and few part high-temperature flue gas is controlled to enter heat storage 5B by heat exchange burner 6B, and in heat storage 5B, carry out heat exchange: heat storage 5B is heated to about 800-1000 ℃, the flue gas self-temperature is then reduced to below 150 ℃, flue gas after the cooling by the road 10, reversal valve 3 interface B,, and reclaim and to enter kiln body middle part by air-introduced machine 2 sucking-offs by the reversal valve 3 corresponding flue gas mouths of pipe;
In subsequent 20-40 second, as shown in Figure 3, the air that air blast 1 is sent into 10 enters heat storage 5B by the road from the corresponding inlet B through reversal valve 3, air is heated to about 800-1000 ℃ in heat storage 5B after, enter heat exchange burner 6B, simultaneously, coal gas enters coal gas burner 4 by gas generator, enter the combustion chamber respectively from the preheating high temperature air of heat exchange burner 6B with from the coal gas of coal gas burner 4, in the combustion chamber, mix, burning, the high-temperature flue gas main flow of its burning partly becomes the high temperature heat source of firing ore and upwards enters raw material silo and fire ore, other has, and few part high-temperature flue gas is controlled to enter heat storage 5A by heat exchange burner 6A, in heat storage 5A, carry out heat exchange: heat storage 5A is heated to 800-1000 ℃, the flue gas self-temperature is then reduced to below 150 ℃, flue gas after the cooling by the road 9, reversal valve 3 interface A, and reclaim and to enter kiln body middle part YZ by air-introduced machine 2 sucking-offs by the reversal valve 3 corresponding flue gas mouths of pipe.
So go round and begin again, by reversal valve 3, the high-temperature flue gas periodicity controlled alternate that makes fractional combustion is by heat storage 5A and 5B, make its periodically alternately accumulation of heat and heat release, combustion air is then periodically by heat storage 5A and 5B, and in heat storage 5A and 5B, be heated be warming up to 800-1000 ° after, periodically alternately send into the high temperature combustion air by heat exchange burner 6A and 6B and in the combustion chamber, mix, burn with the generation coal gas of sending into simultaneously to the combustion chamber; And as above-mentioned at heat storage 5A and 5B periodically through having reduced to flue gas below 150 ℃ in heat exchange temperature, alternately through flue gas by the road 9 and 10,, by air-introduced machine 2 sucking-offs, and reclaim and enter kiln body middle part YZ by the corresponding flue gas mouth of pipe from reversal valve 3 interface A, B.
Implement needs according to ore calcining kiln production, every ore calcining kiln can dispose the utility model efficient and energy-saving combustion system of ore calcining kiln of being made up of a cover or the above regenerative heat exchange device of a cover.
Claims (3)
1. efficient and energy-saving combustion system of ore calcining kiln, comprise air blast, air-introduced machine, pneumatic means, control system and regenerative heat exchange device, it is characterized in that every cover regenerative heat exchange device is made up of four three-way diverter valves, the combination of two groups of burners and two groups of corresponding heat storages thereof, the combination of every group of burner has a coal gas burner (4) and two heat exchange burners (6A), (6B), corresponding respectively connection two heat storages (5A) of two heat exchange burners (6A), (6B), (5B); Two heat storages (5A) of two groups of heat storage correspondences, (5B) are connected with a pair of corresponding interface (A), (B) of reversal valve (3) respectively after the pipeline (9) of correspondence and (10) parallel connection respectively; Another of reversal valve (3) to corresponding interface (C), (D) then respectively with air blast (1) and corresponding connection of air-introduced machine (2); Coal gas burner (4) is connected with the generation gaspipe line, the combustion chamber (R) of the corresponding respectively feeding ore calcining kiln of burner outlet of burner combination.
2. efficient and energy-saving combustion system of ore calcining kiln according to claim 1 is characterized in that air-introduced machine (2) outlet is communicated with kiln body middle part (YZ) by tube connector (11).
3. efficient and energy-saving combustion system of ore calcining kiln according to claim 1 is characterized in that each burner outlet is downward-sloping, is 5 ° of-8 ° of angles with level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200861255U CN201462812U (en) | 2009-06-02 | 2009-06-02 | Ore calcination kiln highly effective energy-saving burning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009200861255U CN201462812U (en) | 2009-06-02 | 2009-06-02 | Ore calcination kiln highly effective energy-saving burning system |
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| CN201462812U true CN201462812U (en) | 2010-05-12 |
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| CN2009200861255U Expired - Fee Related CN201462812U (en) | 2009-06-02 | 2009-06-02 | Ore calcination kiln highly effective energy-saving burning system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766473A (en) * | 2012-08-06 | 2012-11-07 | 山西鑫立能源科技有限公司 | Heat storage and exchange device for gas heater of coal pyrolyzing furnace |
| CN102786946A (en) * | 2012-08-06 | 2012-11-21 | 山西鑫立能源科技有限公司 | Fuel gas heater for heating device of coal pyrolyzing furnace |
| CN102911678A (en) * | 2012-08-06 | 2013-02-06 | 山西鑫立能源科技有限公司 | Method for generating combustible high-temperature waste gas by carrying out dry quenching on combustion waste gas |
-
2009
- 2009-06-02 CN CN2009200861255U patent/CN201462812U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766473A (en) * | 2012-08-06 | 2012-11-07 | 山西鑫立能源科技有限公司 | Heat storage and exchange device for gas heater of coal pyrolyzing furnace |
| CN102786946A (en) * | 2012-08-06 | 2012-11-21 | 山西鑫立能源科技有限公司 | Fuel gas heater for heating device of coal pyrolyzing furnace |
| CN102911678A (en) * | 2012-08-06 | 2013-02-06 | 山西鑫立能源科技有限公司 | Method for generating combustible high-temperature waste gas by carrying out dry quenching on combustion waste gas |
| CN102786946B (en) * | 2012-08-06 | 2014-03-12 | 山西鑫立能源科技有限公司 | Fuel gas heater for heating device of coal pyrolyzing furnace |
| CN102766473B (en) * | 2012-08-06 | 2014-06-11 | 山西鑫立能源科技有限公司 | Heat storage and exchange device for gas heater of coal pyrolyzing furnace |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20100602 |