CN101344264A - Mixed combustion control system of oxygen-enriched and full-oxygen combustion ceramic roller kiln - Google Patents
Mixed combustion control system of oxygen-enriched and full-oxygen combustion ceramic roller kiln Download PDFInfo
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- CN101344264A CN101344264A CNA2008100489525A CN200810048952A CN101344264A CN 101344264 A CN101344264 A CN 101344264A CN A2008100489525 A CNA2008100489525 A CN A2008100489525A CN 200810048952 A CN200810048952 A CN 200810048952A CN 101344264 A CN101344264 A CN 101344264A
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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
Abstract
The invention relates to a mixed combustion control system of an oxygen-rich and total-oxygen combustion ceramic roller kiln, which is composed of a pulse combustion control subsystem and a proportion combustion automatic control subsystem, and a firing curve which is determined by an upper computer (11) is simultaneously implemented; the pulse combustion control subsystem is composed of a temperature measurement sensor (17), a temperature controller (12), a function converter (13), a time sequence controller (14), a burner controller (15), an oxygen electromagnetic valve (7), a gas electromagnetic valve (8) and a pulse combustion burner (9); and the proportion combustion control subsystem is composed of an atmosphere pressure sensor (18), the upper computer (11), a gas controller (1), an oxygen controller (2), a first actuator, a second actuator, a gas valve (5) and an oxygen valve (6). The mixed combustion control system of the invention is applicable to being used in the ceramic roller kiln, can better enhance the combustion performance of the ceramic roller kiln on the whole, save the energy, reduce the emission, improve the product quality, simplify the structure and facilitate the operation simultaneously.
Description
Technical field
The present invention relates to Industrial Stoves combustion control technology field, particularly relate to a kind of oxygen enrichment and all-oxygen combustion ceramic roller kiln mixed combustion control system.
Background technology
The combustion control level of Industrial Stoves directly has influence on every index of production, for example: product quality, energy resource consumption etc.Domestic ceramic kiln generally all adopts the form of continuous burning control at present, and promptly the size by control fuel, combustion-supporting oxygen flow makes temperature, combustion atmosphere in the stove reach technological requirement.The continuous burning control mode is subjected to the restriction of links such as the adjusting of fuel flow rate and measurement, causes the control poor effect of kiln.At present the high-grade ceramic goods are all higher to the requirement of the uniformity of kiln temperature field and combustion atmosphere stable and controllable, particularly to wide section, jumbo ceramic kiln, uniformity requirement to temperature field in furnace is the highest, uses traditional continuous burning control can't satisfy its manufacturing technique requirent.
The adjusting ratio of common burner is generally about 1: 4, when burner when operating at full capacity, gas flow rate, flame profile, the thermal efficiency all can reach optimum state, but when burner flow during near its minimum discharge, thermic load minimum, gas flow rate reduces greatly, flame profile does not reach requirement, the thermal efficiency sharply descends, and burner is operated in 50% when following of flow at full capacity, and above-mentioned every index has just had bigger gap apart from designing requirement.Adopt the burner of The pulse burning control technique, burner has only two kinds of duties, a kind of is to operate at full capacity, another kind is not work, just carry out adjustment by the time ratio of adjusting two states, regulate than low defective so adopt pulse-combustion can remedy burner, can guarantee that still burner is operated in optimal combustion state when needing to hang down temperature control.When using high combustion rate burner, the combustion gas spouting velocity is fast, make and form negative pressure on every side, flue gas in a large amount of kilns is sucked in the main combustion gas, fully mix, prolonged the viscous flow time of flue gas in kiln, increased the time of contact of flue gas and goods, thereby improved convection heat transfer' heat-transfer by convection efficient, in addition, flue gas and combustion gas fully mix in the kiln, make the interior flue-gas temperature of fuel gas temperature and kiln approaching, improve the uniformity of kiln temperature field, can solve the kiln temperature dead angle problem of different shape well, reduce high-temperature fuel gas the direct heat of heated object is impacted.But the pulse-combustion control mode also has its weak point: the big and small fire intermittent action, in whole temperature field, form strong agitation, and be subjected to the influence of strong stirring air-flow easily to produce dirty; Select for use in the pulse period easily not produce temperature fluctuation at that time, burner sprays and the burn rate height, quick heating, and the lifting that can not satisfy the ceramic process temperature should be progressive requirement, easily makes product generation aberration, thereby influences the qualification rate of product.
Summary of the invention
Technical problem to be solved by this invention is: at the characteristics and the pluses and minuses in Industrial Stoves burning control of continuous burning control and pulse-combustion control, a kind of oxygen enrichment and all-oxygen combustion ceramic roller kiln mixed combustion control system are provided, this system can give full play to the advantage of described continuous burning control and pulse-combustion control, thereby better promote the combustibility of ceramic roller kiln on the whole, improve its fuel factor, save the energy, improve the quality of products.
The present invention solves its technical problem and adopts following technical scheme:
Oxygen enrichment provided by the invention and all-oxygen combustion ceramic roller kiln mixed combustion control system be made of pulse-combustion RACS and ratio burning autonomous control subsystem, and two subsystems are carried out a sintering curve of being determined by host computer simultaneously.The pulse-combustion RACS is made up of temperature transducer, temperature controller, function translator, time schedule controller, burner controller, oxygen magnetic valve, gas electromagnetic valve and pulse-combustion burner, wherein: temperature transducer, temperature controller, function translator, time schedule controller and burner controller are connected with cable successively, and temperature controller also is connected with the parts of sintering curve by cable; Burner controller is also linked to each other with gas electromagnetic valve with the oxygen magnetic valve respectively by cable.Ratio burning autonomous control subsystem is made up of atmosphere pressures sensor, host computer, Gas controller, oxygen controller, first actuator, second actuator, gas valve, oxygen valve, and wherein: the atmosphere pressures sensor links to each other with host computer with cable; Host computer connects gas valve by cable through Gas controller, first actuator, connects oxygen valve by cable through oxygen controller, second actuator again on the other hand.
Oxygen enrichment provided by the invention and all-oxygen combustion ceramic roller kiln mixed combustion control system, it uses in ceramic roller kiln.
The present invention is a kind of hybrid combustion control system that is made of continuous burning RACS and pulse-combustion RACS, and this mixed combustion control system can overcome the deficiency of continuous burning mode, also can overcome the deficiency of pulse-combustion simultaneously.Compared with prior art, the present invention mainly contains following advantage:
1. solved the problem of continuous burning control mode deficiency, increased the fuel factor of ceramic roller kiln, made the uniform distribution of temperature field of ceramic kiln, the temperature smooth variation cuts down the consumption of energy and the combustion product discharge capacity, improves and burns till the product quality.
2. can bring into play the advantage of pulse-combustion control mode, that is: adopt the pulse-combustion technology to finish the coarse adjustment of kiln temperature control, under the effect of pulse, big and small fire frequently replaces, and the high speed thermal current of burner ejection makes that whole temperature field in the stove realizes heating up in the stirring of fierceness, vibration, the balance of insulation and cooling.
3. can overcome the deficiency of pulse-combustion control: overlap independent ratio automatic burner control system owing to disposed one at each high-speed pulse burner place, the fine setting that kiln temperature is controlled, and carry out a sintering curve simultaneously, therefore improved the uniformity of kiln Nei Ge district temperature widely, the kiln temperature is constant, thereby reduced because of heating up in the pulse-combustion control stove too fast, and the lifting that can not satisfy the ceramic process temperature should be progressive requirement, easily make product produce aberration (color is inconsistent), and the pulse period is unstable or too frequently cause product to occur such as crackle, dirty situation falls.Also have, can improve the qualification rate of product, product is fired satisfactory for result, and quality is improved, constant product quality.
In addition, because of its burner sprays and the burn rate height, can be rapidly heated, and the big and small fire intermittent action forms strong agitation so make in the whole temperature field, it is even to help temperature, can solve the kiln temperature dead angle problem of different shape well, make that the interior combustion of mixed gas of kiln is more abundant, reduce the generation of NOx, thus more energy-conserving and environment-protective.
4. whole system is simple for structure, and the functional reliability height adopts industrial computer as control module, be convenient to carry out communication and data transmission with host computer, can improve the automaticity of whole Kiln Control System, alleviate operating personnel's working strength, exempt unnecessary manpower waste.
5. native system is not only controlled the time of burning " dutycycle " on the whole, but also controls the time of the fuel and the air quantity " dutycycle " of each burner.The intelligent control of whole process can finish that automatic igniting, flame monitoring, heating/chilling temperature are regulated automatically etc., thereby guarantees the harmony of kiln temperature.
In a word, the present invention can promote the combustibility of ceramic roller kiln on the whole better, and energy-saving and emission-reduction have improved product quality.Simultaneously simple for structure, reliable operation, operation is convenient in the intelligent control of whole process.
Description of drawings
Fig. 1 is oxygen enrichment of the present invention and all-oxygen combustion ceramic roller kiln mixed combustion control system structure chart;
Fig. 2 is an oxygen enrichment of the present invention and all-oxygen combustion ceramic roller kiln mixed combustion control system connection diagram in kind.
Among the figure: 1. Gas controller; 2. oxygen controller; 3. first actuator; 4. second actuator; 5. gas valve; 6. oxygen valve; 7. oxygen magnetic valve; 8. gas electromagnetic valve; 9. pulse-combustion burner; 10. ratio burning burner; 11. host computer; 12. temperature controller; 13. function translator; 14. time schedule controller; 15. burner controller; 16. kiln; 17. temperature transducer; 18. atmosphere pressures sensor.
The specific embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Oxygen enrichment provided by the invention and all-oxygen combustion ceramic roller kiln mixed combustion control system, its structure is as shown in Figure 1: be made of pulse-combustion RACS and ratio burning autonomous control subsystem, and two subsystems is carried out a sintering curve of being determined by host computer 11 simultaneously.Described pulse-combustion RACS is made up of temperature transducer 17, temperature controller 12, function translator 13, time schedule controller 14, burner controller 15, oxygen magnetic valve 7, gas electromagnetic valve 8 and pulse-combustion burner 9, wherein: temperature transducer 17, temperature controller 12, function translator 13, time schedule controller 14 and burner controller 15 are connected with cable successively, and temperature controller 12 also is connected with the parts of sintering curve by cable; Burner controller 15 is also linked to each other with gas electromagnetic valve 8 with oxygen magnetic valve 7 respectively by cable.Described ratio burning autonomous control subsystem is made up of atmosphere pressures sensor 18, host computer 11, Gas controller 1, oxygen controller 2, first actuator 3, second actuator 4, gas valve 5 and oxygen valve 6, and wherein: atmosphere pressures sensor 18 links to each other with host computer 11 with cable; Host computer 11 connects gas valve 5 by cable through Gas controller 1, first actuator 3 on the one hand, connects oxygen valve 6 by cable through oxygen controller 2, second actuator 4 again on the other hand.
Described pulse-combustion RACS, the burning time of the gaseous mixture of its use pulse modulation technology adjusting combustion gas and oxygen or the ratio of shared time of big fire are to realize the pulse-combustion control mode.
Described Gas controller 1, oxygen controller 2, temperature controller 12, time schedule controller 14 and burner controller 15 all adopt industrial Programmable Logic Controller (PLC), they with host computer 11 between all adopt the RS-232 communication modes to be connected.Like this, can transmit information by the RS232 agreement between described controller and the host computer, host computer passes on command signal to give controller by it, controller can be controlled its subordinate's equipment according to the instruction of host computer, instrumentation can pass to host computer with the kiln real time information, carries out real-time demonstration and data storage by host computer.Host computer 11 adopts PC.
The parts of described sintering curve are the memory cell of host computer.
Fig. 2 is oxygen enrichment of the present invention and all-oxygen combustion ceramic roller kiln mixed combustion control system connection diagram in kind.PLC among Fig. 2 is industrial programmable controller, PLC is connected with host computer 11 through the RS485/232 interface, carry out communication by RS485/232 between host computer 11 and the PLC, host computer 11 passes on command signal to give PLC by it, PLC can give above-mentioned controller according to the instruction of host computer 11, each controller can be controlled its subordinate's equipment according to the instruction of host computer 11, instrumentation can pass to the kiln real time information host computer 11, carries out real-time demonstration and data storage by host computer 11.Pulse-combustion control mode and the complete appearance of ratio combustion system, and control different burners respectively, odd even intermeshes, be that 1#, 3#...... (2n-1) # is a pulse-combustion control burner, and 2#, 4#...... (2n) # is a ratio burning control burner, and the combustion control mode difference of the burner of adjacent odd even numbering is coordinated between them mutually, guarantees the furnace temperature smooth variation.
Oxygen enrichment provided by the invention and all-oxygen combustion ceramic roller kiln mixed combustion control system, referring to Fig. 1, its course of work is: host computer 11 is exported control signal after by the sintering curve acting in conjunction of temperature controller 12 with detection signal and kiln 16 technological requirements, (4～20mA or 1～5V) continuous signal convert pulse signal to function translator 13 with the control signal of temperature controller 12 output, be transferred to burner controller 15, burner controller 15 is controlled the break-make of gas electromagnetic valve 8, oxygen magnetic valve 7 according to pulse signal.Temperature controller 12 setting values are big more, and the pulse frequency of exporting through function translator 13 will raise gradually; Set value more for a short time, the pulse frequency of output will just reduce gradually gradually, and the width and the cycle of pulse output are variable.The time of burning then is set to fixed value, frequency is high more, burning time is just long more, blanking time is then short more, when system operates in heating/cooling conversion, temperature controller 12 setting values progressively are close to zero with kiln 16 temperature actual values, the cooling pulse output frequency raises gradually so, and system carries out cold oxygen blow, and purge cycles is the same with mode of heating.When temperature drops to a half of setting the input lower limit, stop cold air and purge; When surpassing a half, burning pulse output frequency raises, and heating flame carries out again.When in a single day temperature reaches transfer point once more, begin heating/cooling control and regulation again.The conversion interval time is determined by the peripheral operation number, as 1s, 20s, 40s etc. according to controlled kiln hysteresis situation.Time schedule controller 14 is connected 1～n output contact with the pulse signal of function translator 13 outputs with fixing procedure order, and automatic disconnection after arriving the time of setting, by coupling, the output number of bank contact arbitrarily.The ratio of oxygen and combustion gas can be adjusted to the burning ratio an of the best automatically by closed loop feedback control and regulation device separately, and in actual production by sintering curve that extracts in the ceramic roller kiln and atmosphere, temperature analysis and oxygen parameter input in the host computer 11, through instructing Gas controller 1 and oxygen controller 2 controls first actuator 3 after atmosphere adjustment and the parameter correction, second actuator 4 is regulated gas valve 5, the gas flow of oxygen valve 6, control the ratio (i.e. " oxygen combustion ratio ") of oxygen and combustion gas with this, a kind of meeting most produce actual burning ratio thereby reach, make the temperature in the kiln 16 precisely controlled.
Described kiln 16 is a ceramic roller kiln.
Oxygen enrichment provided by the invention and all-oxygen combustion ceramic roller kiln mixed combustion control system, it uses in ceramic roller kiln.Described ceramic roller kiln is oxygen enrichment and all-oxygen combustion ceramic roller kiln (CN101182217), perhaps other type as ceramic kilns such as special cermacis shuttle kilns.
All outsourcings of device of the present invention.For example: temperature transducer 17 can adopt the KGW-88 type to peep pipe photoelectric temperature sensor, atmosphere pressures sensor 18 can adopt 1030 series sensor, Gas controller 1, oxygen controller 2 and burner controller 15 can adopt the BELIM0818 intelligent controller, first actuator 3 and second actuator 4 can adopt the BELIMO YE, gas valve 5 and oxygen valve 6 can adopt BELIMO linear regulation valve, gas electromagnetic valve 8 and oxygen magnetic valve 7 can adopt ESAr electromagnetism flutter valve, and pulse-combustion burner 9 and ratio burning burner 10 can adopt Ar-50K-H-PL high-speed pulse burner to realize.
Claims (6)
1. oxygen enrichment and all-oxygen combustion ceramic roller kiln mixed combustion control system is characterized in that being made of pulse-combustion RACS and ratio burning autonomous control subsystem, carry out a sintering curve of being determined by host computer (11) simultaneously,
The pulse-combustion RACS is made up of temperature transducer (17), temperature controller (12), function translator (13), time schedule controller (14), burner controller (15), oxygen magnetic valve (7), gas electromagnetic valve (8) and pulse-combustion burner (9), wherein: temperature transducer (17), temperature controller (12), function translator (13), time schedule controller (14) and burner controller (15) are connected with cable successively, and temperature controller (12) also is connected with the parts of sintering curve by cable; Burner controller (15) is also linked to each other with gas electromagnetic valve (8) with oxygen magnetic valve (7) respectively by cable,
Ratio burning autonomous control subsystem is made up of atmosphere pressures sensor (18), host computer (11), Gas controller (1), oxygen controller (2), first actuator (3), second actuator (4), gas valve (5), oxygen valve (6), and wherein: atmosphere pressures sensor (18) links to each other with host computer (11) with cable; Host computer (11) connects gas valve (5) by cable through Gas controller (1), first actuator (3) on the one hand, connects oxygen valve (6) by cable through oxygen controller (2), second actuator (4) again on the other hand.
2. oxygen enrichment according to claim 1 and all-oxygen combustion ceramic roller kiln mixed combustion control system, it is characterized in that: the pulse-combustion RACS uses pulse modulation technology, and the burning time of the gaseous mixture of adjusting combustion gas and oxygen or the ratio of shared time of big fire realize the pulse-combustion control mode.
3. oxygen enrichment according to claim 1 and all-oxygen combustion ceramic roller kiln mixed combustion control system, it is characterized in that: described Gas controller (1), oxygen controller (2), temperature controller (12), time schedule controller (14) and burner controller (15) all adopt industrial Programmable Logic Controller, they with host computer (11) between all adopt the RS-232 communication modes to be connected.
4. according to claim 1 or 3 described oxygen enrichments and all-oxygen combustion ceramic roller kiln mixed combustion control system, it is characterized in that: host computer (11) adopts PC.
5. the purposes according to described oxygen enrichment of arbitrary claim in the claim 1 to 4 and all-oxygen combustion ceramic roller kiln mixed combustion control system is characterized in that using in ceramic roller kiln.
6. the purposes of oxygen enrichment according to claim 5 and all-oxygen combustion ceramic roller kiln mixed combustion control system is characterized in that described ceramic roller kiln is oxygen enrichment and all-oxygen combustion ceramic roller kiln.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100489525A CN101344264B (en) | 2008-08-22 | 2008-08-22 | Mixed combustion control system of oxygen-enriched and full-oxygen combustion ceramic roller kiln |
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| CN2008100489525A CN101344264B (en) | 2008-08-22 | 2008-08-22 | Mixed combustion control system of oxygen-enriched and full-oxygen combustion ceramic roller kiln |
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| CN101344264B CN101344264B (en) | 2010-06-02 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102221222A (en) * | 2011-04-01 | 2011-10-19 | 上海宝钢工业检测公司 | Automatic regulating device for wide temperature field of pulse combustion furnace and use method thereof |
| CN102560004A (en) * | 2012-02-14 | 2012-07-11 | 中冶赛迪工程技术股份有限公司 | Ladle gas stirring method and stirring gas control device |
| CN102759279A (en) * | 2011-04-28 | 2012-10-31 | 上海宝信软件股份有限公司 | Distributed intelligent nozzle controller for flame temperature control in industrial furnace heat treatment |
| CN104344422A (en) * | 2013-08-09 | 2015-02-11 | 林明主 | Combustion control system for ceramic kiln furnace |
| CN104654302A (en) * | 2015-01-27 | 2015-05-27 | 楚天科技股份有限公司 | Automatic fuel gas flow control system for wire-drawing and filling-sealing machine |
| CN103836642B (en) * | 2014-03-14 | 2016-01-20 | 江南大学 | A kind of gas furnace many burners pulse burning control technique method |
| CN107218601A (en) * | 2017-07-07 | 2017-09-29 | 西安建筑科技大学 | A kind of flame temperature control low nitrogen burning method and system for ceramic roller kiln |
| CN107246796A (en) * | 2017-07-28 | 2017-10-13 | 河南诺巴迪材料科技有限公司 | The electric kiln and pottery method for cooking sintered for pottery |
| CN107245570A (en) * | 2017-07-20 | 2017-10-13 | 山东钢铁集团日照有限公司 | A kind of cold rolled annealed stove heat combination control method |
| CN107763656A (en) * | 2017-11-17 | 2018-03-06 | 江苏闳业机械股份有限公司 | A kind of compounding machine flame system fuel gas mechanism |
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| DE3835360A1 (en) * | 1988-10-17 | 1990-04-19 | Keller Spezialtechnik Gmbh | Tunnel furnace |
| DE4014505A1 (en) * | 1990-05-07 | 1991-11-14 | Wolfgang Prof Dr In Leisenberg | Combustion gas mass pulse modulation - uses overlay of harmonic mass pulse oscillation on the base value to improve heat transfer to material in a tunnel kiln |
| DE4014693A1 (en) * | 1990-05-08 | 1991-11-14 | Wolfgang Prof Dr In Leisenberg | Burner for combustion chamber of a tunnel furnace - uses coanda effect to control supply of combustion air |
| DE4137148A1 (en) * | 1991-11-12 | 1993-05-13 | Transtec | METHOD FOR CONTROLLING A TUNNEL STOVE |
| CN2852010Y (en) * | 2005-09-21 | 2006-12-27 | 侯敬东 | Wide roller table kiln with pulse controller and proportional combustion controller |
| CN101182217A (en) * | 2007-12-06 | 2008-05-21 | 武汉理工大学 | Rich-oxygen and pure oxygen burning roller-way kiln |
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| CN102221222A (en) * | 2011-04-01 | 2011-10-19 | 上海宝钢工业检测公司 | Automatic regulating device for wide temperature field of pulse combustion furnace and use method thereof |
| CN102221222B (en) * | 2011-04-01 | 2015-09-30 | 宝钢工业炉工程技术有限公司 | Wide temperature field automatic regulator for pulse combustion furnace and using method thereof |
| CN102759279A (en) * | 2011-04-28 | 2012-10-31 | 上海宝信软件股份有限公司 | Distributed intelligent nozzle controller for flame temperature control in industrial furnace heat treatment |
| CN102759279B (en) * | 2011-04-28 | 2015-06-03 | 上海宝信软件股份有限公司 | Distributed intelligent nozzle controller for flame temperature control in industrial furnace heat treatment |
| CN102560004B (en) * | 2012-02-14 | 2015-09-16 | 中冶赛迪工程技术股份有限公司 | The method of ladle gas stirring and stirring gas control device |
| CN102560004A (en) * | 2012-02-14 | 2012-07-11 | 中冶赛迪工程技术股份有限公司 | Ladle gas stirring method and stirring gas control device |
| CN104344422A (en) * | 2013-08-09 | 2015-02-11 | 林明主 | Combustion control system for ceramic kiln furnace |
| CN103836642B (en) * | 2014-03-14 | 2016-01-20 | 江南大学 | A kind of gas furnace many burners pulse burning control technique method |
| CN104654302A (en) * | 2015-01-27 | 2015-05-27 | 楚天科技股份有限公司 | Automatic fuel gas flow control system for wire-drawing and filling-sealing machine |
| CN104654302B (en) * | 2015-01-27 | 2017-06-23 | 楚天科技股份有限公司 | For the combustion gas flow automatic control system of wire drawing filling and sealing machine |
| CN107218601A (en) * | 2017-07-07 | 2017-09-29 | 西安建筑科技大学 | A kind of flame temperature control low nitrogen burning method and system for ceramic roller kiln |
| CN107245570A (en) * | 2017-07-20 | 2017-10-13 | 山东钢铁集团日照有限公司 | A kind of cold rolled annealed stove heat combination control method |
| CN107246796A (en) * | 2017-07-28 | 2017-10-13 | 河南诺巴迪材料科技有限公司 | The electric kiln and pottery method for cooking sintered for pottery |
| CN107763656A (en) * | 2017-11-17 | 2018-03-06 | 江苏闳业机械股份有限公司 | A kind of compounding machine flame system fuel gas mechanism |
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