CN103398568B - 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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- CN103398568B CN103398568B CN201310286903.6A CN201310286903A CN103398568B CN 103398568 B CN103398568 B CN 103398568B CN 201310286903 A CN201310286903 A CN 201310286903A CN 103398568 B CN103398568 B CN 103398568B
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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
Mill coal drying system is the powder process workshop section of Shell Coal Gasification device, the satisfactory broken coal of granularity enters coal gasification apparatus battery limit (BL) through storing belt transport, with lime stone according to a certain percentage, under inert environments and tiny structure condition, be milled in coal pulverizer and drying, the coal dust that granularity is qualified is delivered to follow-up system and is used.The broken coal that upstream process adds and lime stone are polished in coal pulverizer, and diesel oil or fuel gas are taken coal pulverizer out of and is separated in fine coal bag filter after altar lamp in hot-blast stove is lighted after the high-temperature dry air of hot-blast stove furnace combustion generation is by fine coal drying.By the former design con-trol requirement of hot-blast stove, altar lamp, except the normal ignition for diesel oil or fuel gas, also prevents diesel oil or fuel gas from stopping working, so altar lamp must keep longtime running for hot blast normal operation period; Diesel oil burner is generally do not have coal dust and gasification furnace does not also run and just can use without during fuel gas in rear system, and running time is relatively short; Fuel gas burner is then just come into operation when after gasification furnace throws coal operation, fuel gas is sent outside, until gasification furnace stops without just out of service during fuel gas, it is the main burner that hot-blast stove runs, and running time is longer; When the altar lamp of hot-blast stove, diesel oil burner and fuel gas burner are stopped transport, all sources of the gas entering altar lamp, diesel oil burner and fuel gas burner must be cut off.
Find in actual motion, general hot-blast stove furnace running temperature is approximately 300 DEG C, and altar lamp there will be flame-out rear situation of not firing for about 20 days continuous operation, approximately run to 30 days, altar lamp igniter is thoroughly damaged, and every day is with 1 bottle of liquefied petroleum gas, and operating cost is very high.Diesel oil burner is also damaged after fuel gas burner runs a period of time.Altar lamp and the impaired most the underlying cause of diesel oil burner are exactly altar lamp and diesel oil burner is not exotic material, because hot-blast stove furnace temperature is high, thus causes altar lamp and diesel oil burner broken.Within during actual motion every two months, at least will burn out an altar lamp, at least need use 30 bottles of liquefied petroleum gas every month, and about three months burn ring diesel oil burner.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 to make on original design basis the altar lamp on hot-blast stove and diesel oil burner 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 one prevent altar lamp and 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:
A control method for hot-blast stove in mill coal drying system, the method comprises the following steps:
A) coal gasification apparatus carries out the driving initial stage, with liquefied gas as the altar lamp in ignited fuel hot-blast stove;
B) altar lamp is lighted and is backwardly arranged on diesel oil burner input diesel oil on hot-blast stove and factory air light diesel oil by altar lamp equally;
C) diesel oil is lighted and after keeping smooth combustion, extinguishes altar lamp and continues the factory air conveying that keeps in altar lamp;
D) after coal gasification apparatus output synthesis gas, with synthesis gas as the fuel gas burner on ignited fuel hot-blast stove;
E) fuel gas burner light rear stopping to diesel oil burner conveying diesel oil extinguish to diesel oil burner;
F) diesel oil burner extinguishes the conveying that successor so keeps its internal plant air.
Close rapidly diesel oil or fuel gas switch cutoff valve when described diesel oil burner, fuel gas burner extinguish, then rekindle altar lamp and light a fire again.
In described hot-blast stove, fire monitor equipment is installed.
Described factory air is remove moisture and the air of 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 drive stable operation from coal gasification apparatus, enable successively and close the altar lamp in hot-blast stove, diesel oil burner and fuel gas burner, wherein the assembly of each closedown all continues keep the circulation of factory air and play cooling effect, prevent the high temperature of hearth of hot-blast stove from causing altar lamp, diesel oil burner and fuel gas burner broken with, keep the circulation of factory air also to play the effect preventing tempering simultaneously, and then improve altar lamp, the service life of diesel oil burner and fuel gas burner, ensure that the stable operation of mill coal drying system and reduce production cost.
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.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further, but described in required protection domain is not limited to;
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, hot-blast stove 4 is placed with from top to down altar lamp 5, diesel oil burner 6 and fuel gas burner 7, altar lamp 5, be also provided with between diesel oil burner 6 and fuel gas burner 7 conveying combustion air airduct, altar lamp 5, diesel oil burner 6 are connected with fuel gas pipe with liquefied petroleum tracheae, diesel oil pipe respectively with fuel gas burner 7.
Embodiment: normally can run 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, adopts following methods to control:
A) coal gasification apparatus carries out the driving initial stage, with liquefied gas as the altar lamp in ignited fuel hot-blast stove;
B) altar lamp is lighted and is backwardly arranged on diesel oil burner input diesel oil on hot-blast stove and factory air light diesel oil by altar lamp equally;
C) diesel oil is lighted and after keeping smooth combustion, extinguishes altar lamp and continues the factory air conveying that keeps in altar lamp;
D) after coal gasification apparatus output synthesis gas, with synthesis gas as the fuel gas burner on ignited fuel hot-blast stove;
E) fuel gas burner light rear stopping to diesel oil burner conveying diesel oil extinguish to diesel oil burner;
F) diesel oil burner extinguishes the conveying that successor so keeps its internal plant air.
In order to ensure the stable operation of system, closing rapidly diesel oil or fuel gas switch cutoff valve when described diesel oil burner 6, fuel gas burner 7 extinguish, then rekindling altar lamp 5 and light a fire again.
Be provided with fire monitor equipment in described hot-blast stove 4, it can monitor the flame combustion situation in hot-blast stove 4 in real time, ensures the stable operation of whole system.
In order to prevent altar lamp 5 and diesel oil burner 6 oxide etch because of oxygen, described factory air is remove moisture and the air of supercharging, also has combustion-supporting effect simultaneously.
Cause fray-out of flame to prevent pressure excessive, the pressure of described factory air is 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 every month only need use two bottles of liquefied petroleum gas, has greatly saved the use amount of liquefied petroleum gas, and then has reduced operating cost.Simultaneously because the maintenance of altar lamp 5 is more difficult, so substantially 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 calculates by operation for 11 months, within 1 year, can save the expense buying altar lamp is 8 × 6,=48 ten thousand yuan, saving the expense buying liquefied petroleum gas is (30-2) × 11 × 300=9.24 ten thousand yuan, two totals can save 48+9.24=57.24 ten thousand yuan for 1 year, also has the expense meter (market price is not quite clear) damaging diesel oil burner, therefore, be not difficult to find out from above data, in mill coal drying system, the control method of hot-blast stove reaches expection object.
Claims (5)
1. the control method of hot-blast stove in mill coal drying system, is characterized in that: the method comprises the following steps:
A) coal gasification apparatus carries out the driving initial stage, with liquefied gas as the altar lamp in ignited fuel hot-blast stove;
B) altar lamp is lighted and is backwardly arranged on diesel oil burner input diesel oil on hot-blast stove and factory air light diesel oil by altar lamp equally;
C) diesel oil is lighted and after keeping smooth combustion, extinguishes altar lamp and continues the factory air conveying that keeps in altar lamp;
D) after coal gasification apparatus output synthesis gas, with synthesis gas as the fuel gas burner on ignited fuel hot-blast stove;
E) fuel gas burner light rear stopping to diesel oil burner conveying diesel oil extinguish to diesel oil burner;
F) diesel oil burner still keeps the conveying of its internal plant air after extinguishing.
2. the control method of hot-blast stove in mill coal drying system according to claim 1, is characterized in that: close rapidly diesel oil or fuel gas switch cutoff valve when described diesel oil burner, fuel gas burner extinguish, 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: be provided with fire monitor equipment in described hot-blast stove.
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 remove moisture and the air of supercharging.
5. the control method of hot-blast stove in mill coal drying system according to claim 4, 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 true CN103398568B (en) | 2015-03-18 |
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| 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 |
Citations (2)
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| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0534067A (en) * | 1991-07-25 | 1993-02-09 | Kankyo Soken Consultant:Kk | Drying system for metal chip |
| JP4216777B2 (en) * | 2004-07-08 | 2009-01-28 | 株式会社神戸製鋼所 | Method for operating hot stove and hot stove |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (1)
| Title |
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| 热风炉燃烧器损坏原因分析及改造;陈利等;《石油化工设备》;20120325;第41卷(第2期);110-112 * |
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