CN102878781B - Boiler steam heating dry preservation method - Google Patents
Boiler steam heating dry preservation method Download PDFInfo
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- CN102878781B CN102878781B CN201210419987.1A CN201210419987A CN102878781B CN 102878781 B CN102878781 B CN 102878781B CN 201210419987 A CN201210419987 A CN 201210419987A CN 102878781 B CN102878781 B CN 102878781B
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Abstract
The invention provides a boiler steam heating dry preservation method. The boiler steam heating dry preservation method is characterized by comprising the following steps: (1) utilizing steam to heat, warm up and boost a boiler, and utilizing the steam to discharge furnace air from an air valve; (2) unceasingly heating, warming up and boosting the steam, when steam pressure is lifted so as to open a blow-off valve to eliminate the condensed water in a furnace; (3) when the steam pressure is lifted again, an inlet steam valve is closed, and maintaining pressure for a long time; (4) reopening the blow-off valve, discharging full steam in the furnace, closing each valve, reducing furnace pressure to zero at this point, and setting the temperature to be between 70-90 DEG C; and (5) utilizing heat in the furnace to dry the furnace body, fully drying the furnace, and achieving a preventive maintenance purpose. The boiler steam heating dry preservation method provided by the invention has the advantages that the labour is saved, a drying agent is not consumed, the cost is low, the operation is simple, and the maintenance quality is high.
Description
Technical field
The invention belongs to boiler applications technical field, relate to the maintenance method after a kind of boiler is stopped using, is a kind of Boiler Steam heating dry preservation method specifically.
Background technology
In order to slow down the extent of corrosion of boiler, need to maintain boiler, the maintenance of boiler is divided into two kinds of wet preservation and dry preservations conventionally, and wet preservation is for the boiler in using, and dry preservation is for the boiler after stopping using.
The wet preservation main purpose of boiler is to reduce the oxygen content of feedwater, and common hard water is processed into soft water, and method for treating water is more, mainly contains following several: the outer tenderizer of (1) stove; (2) physics tenderizer; (3) tenderizer in stove; (4) deoxygenation; (5) boiler blow-off etc.At present, what the outer water correction of stove adopted is base exchange method, and the method such as ion, hydrogen ion is received in conventional cation exchange water treatment.
At present, the dry preservation of boiler after stopping using adopts following methods substep to carry out conventionally:
(1), first by boiler internal incrustation scale and iron rust with outside cigarette is smelly cleans out, boiler is dried with low baking temperature.
(2) will fill the uncovered box of drier, be positioned in the upper and lower drum and header of the boiler of stopping using, and by boiler circuit and air and flue system and extraneous tight isolated.Sealing manhole, hand hole.
(3) drier generally uses anhydrous calcium chloride or quick lime.Its expense can be calculated according to the volume of boiler.As use block anhydrous calcium chloride. in an average cube volume, add 1-2 kg, as with quick lime, add 2-3 kg.
(4) in order to ensure the effect of dry type maintenance, after dry preservation starts. first month is opened manhole, hand hole once checks, as found drier powdering, loses wettability power, the drier that will more renew.According to inspection situation, can shorten or extend the later replacing time.
(5) stop using more than two or three months or the boiler of longer time, after inside and outside dirt removal, be coated with antirust paint in heating surface inside.Annex also will overhaul verification, except oil guard, in burner hearth and flue, places quick lime, carries out dry preservation.
This dry type maintenance method is cumbersome, not only needs artificial treatment, makes regular check on, and also consume drier, and maintenance qualities plays completely certainly in human factor.
Summary of the invention
The present invention solves the problems referred to above that prior art exists, and a kind of Boiler Steam heating dry preservation method is provided, and utilizes vacuum antiseptic erosion principle to carry out dry preservation to boiler, and saving is artificial, does not consume drier, ensures maintenance qualities.
The object of the invention is to be achieved through the following technical solutions:
A kind of Boiler Steam heating dry preservation method, is characterized in that, comprises the steps: that (1) boiler steam progressively heats, heats up, boosts, and utilizes steam that furnace air is discharged from air valve; (2) continue Steam Heating, heat up, boost, after steam pressure raises, open blowoff valve and get rid of the condensed water in stove; (3), after steam pressure raises again, close into steam valve pressurize a period of time; (4) open blowoff valve again, by whole the steam in stove emptyings, close each valve, now furnace pressure drops to zero, and temperature is between 70-90 DEG C; (5) utilize the heat in stove to dry body of heater, make to be fully dried in stove, reach the object of maintaining.
Further improvement to said method: in step (2), the discharge of condensed water is carried out at twice, in the time that steam pressure is increased to 0.1Mpa, open blowoff valve and get rid of the condensed water in stove, close again blowoff valve, when steam pressure is increased to after 0.25Mpa again, again drive blowoff valve and get rid of and will after residual condensed water, close blowoff valve in stove.
Further improvement to said method is: after in step (3), condensed water is got rid of, close into steam valve in the time that steam pressure rises to 0.3Mpa, pressurize was opened blowoff valve after 4 hours, by whole the steam in stove emptyings, then closed each valve.
Further improvement to said method is: above method step (1) to (5) at least monthly carries out once.
The present invention compared with prior art tool has the following advantages and good effect:
The present invention adopts vacuum antiseptic erosion principle to carry out dry preservation to boiler, utilizes the heat in stove to dry body of heater, makes to be fully dried in stove, reaches the object of maintaining.Save manually, do not consume drier, cost of upkeep is low, easy and simple to handle, and maintenance qualities is high.
Detailed description of the invention
The embodiment of a kind of Boiler Steam heating of the present invention dry preservation method, comprises the steps:
(1) boiler progressively heats, heats up, boosts with steam, utilizes steam that furnace air is discharged from air valve;
(2) continue Steam Heating, heat up, boost, after steam pressure raises, open blowoff valve and get rid of the condensed water in stove;
(3), after steam pressure raises again, close into steam valve pressurize a period of time;
(4) open blowoff valve again, by whole the steam in stove emptyings, close each valve, now furnace pressure drops to zero, and temperature is between 70-90 DEG C;
(5) utilize the heat in stove to dry body of heater, make to be fully dried in stove, reach the object of maintaining.Above method step (1) to (5) at least monthly carries out once.
Concrete operation step is as follows:
1. first air valve is opened emptyingly, closed each blowoff valve draining and water supply valve door;
2. open main steam valve and pipeline and put into steam in stove;
3. along with the entering of steam, pressure increases, and the air in stove can be discharged from air valve, sees while steam, closes air door;
4. in stove, start progressively to heat up, boost, in the time that steam pressure rises to 0.1Mpa, open blowoff valve and get rid of the condensed water in stove, then close blowoff valve;
5. in the time that steam pressure rises to 0.25Mpa, again open blowoff valve by residual water emptying, close blowoff valve;
6. in the time that steam pressure rises to 0.3Mpa, close into steam valve;
7. pressure keeps 4 hours, opens blowoff valve, by whole the steam in stove emptyings;
8, now furnace pressure drops to zero, and temperature, between 70-90 DEG C, utilizes the heat in stove to dry body of heater, makes in stove fully dry.
9, for making boiler dry type maintaining better effects if, above method is at least monthly carried out once.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present invention, variation, remodeling, interpolation or the replacement done, also should belong to protection scope of the present invention.
Claims (2)
1. a Boiler Steam heating dry preservation method, is characterized in that, comprises the steps: that (1) boiler steam progressively heats, heats up, boosts, and utilizes steam that furnace air is discharged from air valve; (2) continue Steam Heating, heat up, boost, after steam pressure raises, open blowoff valve and get rid of the condensed water in stove, the discharge of condensed water is carried out at twice, in the time that steam pressure is increased to 0.1Mpa, open blowoff valve and get rid of the condensed water in stove, close again blowoff valve, when steam pressure is increased to after 0.25Mpa again, again open after blowoff valve is got rid of the remaining condensed water in stove and close blowoff valve; (3) in the time that being increased to 0.3Mpa again, steam pressure closes into steam valve pressurize 4 hours; (4) open blowoff valve again, by whole the steam in stove emptyings, close each valve, now furnace pressure drops to zero, and temperature is between 70-90 DEG C; (5) utilize the heat in stove to dry body of heater, make to be fully dried in stove, reach the object of maintaining.
2. according to Boiler Steam heating dry preservation method claimed in claim 1, it is characterized in that, described step (1) to (5) is at least monthly carried out once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210419987.1A CN102878781B (en) | 2012-10-29 | 2012-10-29 | Boiler steam heating dry preservation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210419987.1A CN102878781B (en) | 2012-10-29 | 2012-10-29 | Boiler steam heating dry preservation method |
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| CN102878781A CN102878781A (en) | 2013-01-16 |
| CN102878781B true CN102878781B (en) | 2014-11-26 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615928A (en) * | 2013-11-11 | 2014-03-05 | 辽宁大唐国际锦州热电有限责任公司 | Shutdown maintenance method for heaters for heating networks |
| CN105506646B (en) * | 2015-12-25 | 2018-11-20 | 瓮福达州化工有限责任公司 | Gas fired-boiler maintenance method |
| CN112393219B (en) * | 2019-08-13 | 2022-09-16 | 中国石油化工股份有限公司 | Dry maintenance method for maintaining boiler by using superheated steam |
| CN113974444B (en) * | 2021-10-29 | 2023-05-05 | 添可智能科技有限公司 | Intelligent cooking equipment maintenance treatment method and intelligent cooking equipment |
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| RU2101608C1 (en) * | 1995-06-28 | 1998-01-10 | Николай Александрович Никифоров | Method of preservation of hollow metal members of heat power equipment and system for realization of this method |
| CN102168273A (en) * | 2011-03-15 | 2011-08-31 | 昆明醋酸纤维有限公司 | Maintaining and energy-saving method for blowout stand-by boiler |
| CN102519228A (en) * | 2011-11-23 | 2012-06-27 | 中国神华能源股份有限公司 | Maintenance method for boiler |
| CN102519030A (en) * | 2012-01-10 | 2012-06-27 | 广东电网公司电力科学研究院 | Shutdown maintenance method of thermal equipment |
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Patent Citations (4)
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| RU2101608C1 (en) * | 1995-06-28 | 1998-01-10 | Николай Александрович Никифоров | Method of preservation of hollow metal members of heat power equipment and system for realization of this method |
| CN102168273A (en) * | 2011-03-15 | 2011-08-31 | 昆明醋酸纤维有限公司 | Maintaining and energy-saving method for blowout stand-by boiler |
| CN102519228A (en) * | 2011-11-23 | 2012-06-27 | 中国神华能源股份有限公司 | Maintenance method for boiler |
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| 唐俊锋.锅炉停炉期间的维护保养.《科技资讯》.2006,(第05期), * |
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