CN103398568A - Method for controlling hot blast stove in coal grinding drying system - Google Patents
Method for controlling hot blast stove in coal grinding drying system Download PDFInfo
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- CN103398568A CN103398568A CN2013102869036A CN201310286903A CN103398568A CN 103398568 A CN103398568 A CN 103398568A CN 2013102869036 A CN2013102869036 A CN 2013102869036A CN 201310286903 A CN201310286903 A CN 201310286903A CN 103398568 A CN103398568 A CN 103398568A
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Abstract
The invention discloses a method for controlling a hot blast stove in a coal grinding drying system. During the period from the start of the operation of a coal gasification device to stable operation, an incandescent light, a diesel oil burner and a fuel gas burner are sequentially turned on and turned off, wherein the incandescent light, the diesel oil burner and the fuel gas burner are arranged on the hot blast stove. Each component which is turned off continuously keeps factory ventilation, so that the function of cooling can be achieved, the damage, caused by the high temperature of a health of the hot blast stove, to the incandescent light, the diesel oil burner and the fuel gas burner is prevented, meanwhile, factory ventilation is maintained, the function of tempering prevention is further achieved, so that the service life of the incandescent light, the service life of the diesel oil burner and the service life of the fuel gas burner are prolonged, the stable operation of the coal grinding drying system is guaranteed, and the production cost is reduced.
Description
Technical field
The present invention relates to the control method of hot-blast stove in a kind of mill coal drying system, belong to hot-blast stove control technology field.
Background technology
The mill coal drying system is the powder process workshop section of shell coal gasification apparatus, the satisfactory broken coal of granularity enters the coal gasification apparatus battery limit (BL) through the storing belt transport, with lime stone according to a certain percentage, under inert environments and micro-condition of negative pressure, in coal pulverizer, be milled and drying, the coal dust that granularity is qualified is delivered to follow-up system and is used.Broken coal and lime stone that upstream process adds are polished in coal pulverizer, diesel oil or fuel gas separate after the fine coal drying, taking coal pulverizer out of at the high temperature drying gas that hot-blast stove furnace internal combustion produces in the fine coal bag filter after altar lamp in hot-blast stove is lighted.By the former design of hot-blast stove, control requirement, altar lamp, except the normal ignition for diesel oil or fuel gas, also prevents that for the hot blast normal operation period diesel oil or fuel gas from stopping working, so altar lamp must keep long-term operation; The diesel oil burner is generally just can not use when rear system has coal dust and gasification furnace also not to move without fuel gas, and running time is relatively short; The fuel gas burner is just to come into operation when fuel gas is sent outside after gasification furnace is thrown the coal operation, until gasification furnace is just out of service while stopping without fuel gas, it is the main burner of hot-blast stove operation, and running time is longer; When altar lamp, diesel oil burner and the fuel gas burner of hot-blast stove are stopped transport, must cut off all sources of the gas that enter altar lamp, diesel oil burner and fuel gas burner.
In actual motion, find, general hot-blast stove furnace running temperature is approximately 300 ℃, and altar lamp there will be flame-out rear situation of not firing in about 20 days in continuous operation, approximately run to 30 days, the altar lamp igniter is thoroughly damaged, and every day will be with 1 bottle of liquefied petroleum gas, and operating cost is very high.The diesel oil burner is also damaged after operation a period of time at the fuel gas burner.The impaired the underlying cause of altar lamp and diesel oil burner be exactly altar lamp and diesel oil burner be not exotic material, because hot-blast stove furnace temperature is high, thereby cause altar lamp and diesel oil burner broken.During actual motion, to burn out at least an altar lamp in every two months, need at least every month to use 30 bottles of liquefied petroleum gas, and burn diesel oil burner of ring in about three months.And the maintenance of altar lamp and diesel oil burner and renewal cost are very high, cause increasing of operating cost.
According to the inalterability of design hot-blast stove furnace temperature, consider that raising altar lamp and diesel oil burner material will increase cost.Therefore, how on original design basis, to make altar lamp and diesel oil burner on hot-blast stove not damaged, cost-saving, guarantee the stable operation of mill coal drying system, become mill coal drying system urgent problem.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention aim to provide a kind of prevent altar lamp and the diesel oil burner not damaged, cost-saving, guarantee the control method of hot-blast stove in the mill coal drying system of mill coal drying system stable operation.
The present invention is achieved through the following technical solutions:
The control method of hot-blast stove in a kind of mill coal drying system, the method comprises the following steps:
A) coal gasification apparatus carries out the driving initial stage, with liquefied gas, acts as a fuel and lights the altar lamp in hot-blast stove;
B) altar lamp is lighted and backwardly is arranged on equally diesel oil burner input diesel oil and the factory air on hot-blast stove and lights diesel oil by altar lamp;
C), after diesel oil is lighted and kept smooth combustion, extinguish altar lamp and continue to keep the factory air in altar lamp to carry;
D), after coal gasification apparatus output synthesis gas, with synthesis gas, act as a fuel and light the fuel gas burner on hot-blast stove;
E) the fuel gas burner stops after lighting carrying diesel oil to diesel oil burner to extinguish to the diesel oil burner;
F) the diesel oil burner extinguishes the conveying that the successor so keeps its inner factory air.
Described diesel oil burner, when the fuel gas burner extinguishes, close rapidly diesel oil or fuel gas switch stop valve, then rekindle altar lamp and light a fire again.
In described hot-blast stove, fire monitor equipment is installed.
Described factory air is for removing the atmosphere of moisture supercharging.
The pressure of described factory air is 0.5～0.6MPa.
The invention has the beneficial effects as follows:
compared with prior art, the control method of hot-blast stove in mill coal drying system provided by the invention, during from coal gasification apparatus, driving stable operation, enable successively and close the altar lamp in hot-blast stove, diesel oil burner and fuel gas burner, wherein each assembly of closing all continues to keep the circulation of factory air and plays cooling effect, the high temperature that prevents hearth of hot-blast stove causes altar lamp, diesel oil burner and fuel gas burner broken with, keep simultaneously the circulation of factory air also to play the effect that prevents tempering, and then promoted altar lamp, the service life of diesel oil burner and fuel gas burner, guaranteed the stable operation of mill coal drying system and reduced production cost.
The accompanying drawing explanation
Fig. 1 is the structural representation of mill coal drying system;
In figure: 1-coal pulverizer, 2-coal dust bag filter, 3-circulating fan, 4-hot-blast stove, 5-altar lamp, 6-diesel oil burner, 7-fuel gas burner.
The specific embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further, but that desired protection domain is not limited to is described;
As shown in Figure 1, coal pulverizer 1, coal dust bag filter 2, circulating fan 3 and hot-blast stove 4 are connected to form gas flow loop successively, on hot-blast stove 4, be placed with from top to down altar lamp 5, diesel oil burner 6 and fuel gas burner 7, between altar lamp 5, diesel oil burner 6 and fuel gas burner 7, also be provided with the airduct of carrying combustion air, altar lamp 5, diesel oil burner 6 and fuel gas burner 7 are connected with fuel gas pipe with liquefied petroleum tracheae, diesel oil pipe respectively.
Embodiment: can normally move for a long time in order to ensure altar lamp 5, diesel oil burner 6, do not burnt out by the high temperature of hot-blast stove 4, adopt following methods to control:
A) coal gasification apparatus carries out the driving initial stage, with liquefied gas, acts as a fuel and lights the altar lamp in hot-blast stove;
B) altar lamp is lighted and backwardly is arranged on equally diesel oil burner input diesel oil and the factory air on hot-blast stove and lights diesel oil by altar lamp;
C), after diesel oil is lighted and kept smooth combustion, extinguish altar lamp and continue to keep the factory air in altar lamp to carry;
D), after coal gasification apparatus output synthesis gas, with synthesis gas, act as a fuel and light the fuel gas burner on hot-blast stove;
E) the fuel gas burner stops after lighting carrying diesel oil to diesel oil burner to extinguish to the diesel oil burner;
F) the diesel oil burner extinguishes the conveying that the successor so keeps its inner factory air.
In order to guarantee the stable operation of system, described diesel oil burner 6, when extinguishing, fuel gas burner 7 closes rapidly diesel oil or fuel gas switch stop valve, and then rekindle altar lamp 5 and light a fire again.
In described hot-blast stove 4, fire monitor equipment is installed, the flame combustion situation in its energy Real Time Monitoring hot-blast stove 4, guarantee the stable operation of whole system.
In order to prevent that altar lamp 5 and diesel oil burner 6 are because of oxygen oxide etch, described factory air, for removing the atmosphere of moisture supercharging, also has combustion-supporting effect simultaneously.
In order to prevent that pressure is excessive and to cause fray-out of flame, the pressure of described factory air be 0.5～0.6MPa.
Adopt control method actual motion of the present invention after 17 months, neither one altar lamp 5 and diesel oil burner 6 are burned, and only need use two bottles of liquefied petroleum gas every month, have greatly saved the use amount of liquefied petroleum gas, and then have reduced operating cost.Simultaneously because the maintenance of altar lamp 5 is more difficult, so basically all will change after damaging.The market quotes of altar lamp and liquefied petroleum gas divides others 80,000 yuan/and 300 yuan/bottle, annual device calculated by operation in 11 months, can save the expense of buying altar lamp in 1 year is ten thousand yuan of 8 * 6=48, saving the expense of buying liquefied petroleum gas is ten thousand yuan of (30-2) * 11 * 300=9.24, two added up to 1 year can save ten thousand yuan of 48+9.24=57.24, damage in addition the expense meter (market price is not quite clear) of diesel oil burner, therefore, from above data, be not difficult to find out, in the mill coal drying system, the control method of hot-blast stove has reached the expection purpose.
Claims (5)
1. the control method of hot-blast stove in a mill coal drying system, it is characterized in that: the method comprises the following steps:
A) coal gasification apparatus carries out the driving initial stage, with liquefied gas, acts as a fuel and lights the altar lamp in hot-blast stove;
B) altar lamp is lighted and backwardly is arranged on equally diesel oil burner input diesel oil and the factory air on hot-blast stove and lights diesel oil by altar lamp;
C), after diesel oil is lighted and kept smooth combustion, extinguish altar lamp and continue to keep the factory air in altar lamp to carry;
D), after coal gasification apparatus output synthesis gas, with synthesis gas, act as a fuel and light the fuel gas burner on hot-blast stove;
E) the fuel gas burner stops after lighting carrying diesel oil to diesel oil burner to extinguish to the diesel oil burner;
F) the diesel oil burner extinguishes the conveying that the successor so keeps its inner factory air.
2. the control method of hot-blast stove in mill coal drying system according to claim 1 is characterized in that: described diesel oil burner, when the fuel gas burner extinguishes, close rapidly diesel oil or fuel gas switch stop valve, then rekindle altar lamp and light a fire.
3. the control method of hot-blast stove in mill coal drying system according to claim 1, is characterized in that: in described hot-blast stove, fire monitor equipment is installed.
4. the control method of hot-blast stove in mill coal drying system according to claim 1 is characterized in that: described factory air is for removing the atmosphere of moisture supercharging.
5. the control method of hot-blast stove in mill coal drying system according to claim 4, it is characterized in that: the pressure of described factory air is 0.5～0.6MPa.
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| CN201310286903.6A CN103398568B (en) | 2013-07-09 | 2013-07-09 | Method for controlling hot blast stove in coal grinding drying system |
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| CN201310286903.6A CN103398568B (en) | 2013-07-09 | 2013-07-09 | Method for controlling hot blast stove in coal grinding drying system |
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| CN103398568B CN103398568B (en) | 2015-03-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556005A (en) * | 2016-11-21 | 2017-04-05 | 中国五环工程有限公司 | The burning utilization of low heat value fixed gas and oxygen-enriched combusting method |
| CN113025389A (en) * | 2021-03-05 | 2021-06-25 | 韩乐 | Raw coal treatment equipment and method for treating raw coal by using same |
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| JPH0534067A (en) * | 1991-07-25 | 1993-02-09 | Kankyo Soken Consultant:Kk | Drying system for metal chip |
| JP2006022381A (en) * | 2004-07-08 | 2006-01-26 | Kobe Steel Ltd | Method for operating hot stove, and hot stove |
| CN102175023A (en) * | 2011-01-21 | 2011-09-07 | 河南龙宇煤化工有限公司 | Igniting method for gasification furnace start-up burner |
| CN102618332A (en) * | 2011-12-23 | 2012-08-01 | 航天长征化学工程股份有限公司 | Starting/stopping control method and system for powdered coal pressure gasification device |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0534067A (en) * | 1991-07-25 | 1993-02-09 | Kankyo Soken Consultant:Kk | Drying system for metal chip |
| JP2006022381A (en) * | 2004-07-08 | 2006-01-26 | Kobe Steel Ltd | Method for operating hot stove, and hot stove |
| CN102175023A (en) * | 2011-01-21 | 2011-09-07 | 河南龙宇煤化工有限公司 | Igniting method for gasification furnace start-up burner |
| CN102618332A (en) * | 2011-12-23 | 2012-08-01 | 航天长征化学工程股份有限公司 | Starting/stopping control method and system for powdered coal pressure gasification device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556005A (en) * | 2016-11-21 | 2017-04-05 | 中国五环工程有限公司 | The burning utilization of low heat value fixed gas and oxygen-enriched combusting method |
| CN106556005B (en) * | 2016-11-21 | 2019-03-15 | 中国五环工程有限公司 | The burning utilization of low heat value fixed gas and oxygen-enriched combusting method |
| CN113025389A (en) * | 2021-03-05 | 2021-06-25 | 韩乐 | Raw coal treatment equipment and method for treating raw coal by using same |
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| CN103398568B (en) | 2015-03-18 |
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