CN104117167A - Fire extinguishing method of flash drying tower - Google Patents
Fire extinguishing method of flash drying tower Download PDFInfo
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- CN104117167A CN104117167A CN201410370042.4A CN201410370042A CN104117167A CN 104117167 A CN104117167 A CN 104117167A CN 201410370042 A CN201410370042 A CN 201410370042A CN 104117167 A CN104117167 A CN 104117167A
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- drying tower
- fire
- flash evaporation
- evaporation drying
- airduct
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Abstract
The invention discloses a fire extinguishing method of a flash drying tower. The fire extinguishing method is characterized by comprising the following steps: starting all fans in the flash drying tower, then opening an inspection manhole of an air pipe of the flash drying tower, and injecting fire fighting water from the manhole, wherein the fire fighting water is blown off and atomized under the action of a wind force, and is blown into the flash drying tower and the air pipe to extinguish fire. According to the fire extinguishing method, after all the original fans in the flash drying tower are started, fire fighting water is blown off and atomized to be as high as possible to extinguish fire at a high place, especially, the effect of extinguishing fire on a high bend of the air pipe is remarkable, the fire is thoroughly extinguished, and the fire extinguishing time is shortened to 1.5-2 hours from original 15-20 hours.
Description
Technical field
The present invention relates to the fire-fighting technique field of main equipment, be specifically related to the extinguishing method of flash evaporation drying tower.
Background technology
The drying medium of flash evaporation drying tower generally adopts surrounding air, and surrounding air, after air cleaner, blasts vapor heat exchanger by blower fan and is heated, and the hot blast after heating forms the whirlwind of certain flow rate, the flow direction.Whirlwind contacts, collides with the wet stock that fibre fluff fluffer gets off, and starts a series of physical changes such as matter heat exchange, separation, makes material separated with contained wet moisture content, reaches dry object.In expansion drying process, wet slurry passes into flash evaporation drying tower, directly mix and be dried with hot blast, flash evaporation drying tower is all main equipment, particularly, in modern pulping and paper-making industry, conventionally up to tens meters (the flash evaporation drying tower height that our company uses is 30 meters), and also there is inner wall smooth, totally-enclosed, temperature high, in dry run, if any equipment fault, easily cause fire.When there is fire, in the middle of external existing similar flash drying equipment, all to spray into from the inspection chamber at expansion drying tower body middle part with fire water, expansion drying tower body inwall is put out a fire, such mode fire water cannot arrive the pipe bent position of the airduct highest point on flash evaporation drying tower, must be from the fire extinguishing of getting on of the inner built of airduct, or pipe cutting enters fire extinguishing (way of this destruction tower body airduct is larger to technogenic influence from outside is used suspender operation and destroyed airduct heat-preservation cotton, reduce the smoothness of airduct inside, easily cause long-pending slurry) simultaneously, these measure processing operation difficulty are very large, time and effort consuming, attack time is long need to just can being disposed for 15～20 hours, reaches the condition that start feeds intake again.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of blow-off velocity soon, the extinguishing method of flash evaporation drying tower and airduct thoroughly.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
The extinguishing method of flash evaporation drying tower, comprise the following steps: start all blower fans in flash evaporation drying tower, then open flash evaporation drying tower and inspection chamber, from inspection chamber, inject fire water, fire water, under the effect of wind-force, is dispelled atomization, is blown to flash evaporation drying tower and airduct inwall, and fire is put out by water, start vapor heat exchanger, air is suitably heated.Hot-air is when dispelling fire water, the temperature that can improve fire water even makes fire water evaporation, and water, in the process of evaporation, can adsorb a large amount of black slurries that burnt, burn in fire, these slurry granules are progressively dried and are taken away by hot blast, prevent revivable generation.
In order further to accelerate the evaporation rate of fire water, thereby the temperature in fast reducing flash evaporation drying tower and airduct is further preferred, and described fire water, after injecting airduct, is heated, and makes the temperature of fire water reach 80～95 ℃.
Further preferred, fire water is injected from the inspection chamber of the airduct of 18 meters of flash evaporation drying towers.
Further preferred, fire water is injected from the first paragraph of flash evaporation drying tower and the inspection chamber of second segment airduct.
Further preferred, fire water is injected from the inspection chamber of the 3rd section of airduct of flash evaporation drying tower.
Compare with existing external same category of device fire extinguishing measure, the present invention is by starting original blower fan in flash evaporation drying tower, fire water is dispelled to atomization, make it can reach higher height, put the flare of eminence out by water, particularly to more obvious (the existing extinguishing method of the effect of the pipe bent position of airduct eminence, fire water cannot arrive eminence, cannot ensuring coverage 100% fire position, and because of airduct inner wall smooth, concentrated fire water cannot stop, fire extinguishing weak effect), fire extinguishing is thorough, and the speed of fire extinguishing is fast, from original 15～20 hours, foreshortens to 0.5～2 hour; The air in addition blower fan being blasted heats, and to fire water heating, makes fire water evaporation endothermic, reduces the temperature in flash evaporation drying tower and airduct, further improves the speed of fire extinguishing.
The specific embodiment
Extinguishing method of the present invention, for large-scale flash evaporation drying tower and airduct, in the situation that not increasing equipment investment, utilizes the original equipment of flash evaporation drying tower, greatly shortens the time of fire extinguishing.
Embodiment 1
When flash evaporation drying tower generation fire, first start all blower fans in flash evaporation drying tower, then open the first paragraph at 18 meters of of flash evaporation drying tower and the inspection chamber of second segment airduct, from inspection chamber, inject fire water, fire water is under the effect of wind-force, dispelled atomization, blow in flash evaporation drying tower and airduct, the height that can arrive flash evaporation drying tower after small part fire water atomization is 30 meters; In the pipe bent position of 27 meters of airducts, water, under the effect of wind-force, sprays into along bend, and flare is put out by water.Because most of water can not be blown up, so the time of thoroughly being put out by water to flare from unlatching blower fan is 1.9 hours.
Embodiment 2
When flash evaporation drying tower generation fire, first start all blower fans in flash evaporation drying tower, first open the first paragraph at 18 meters of of flash evaporation drying tower, the inspection chamber of second segment and the 3rd airduct, from inspection chamber, inject fire water, then the vapor heat exchanger starting is cold air heating, fire water is under the effect of hot blast wind-force, dispelled atomization and evaporation after-blow in flash evaporation drying tower and airduct, the height that can arrive flash evaporation drying tower after fire water atomization is 30 meters, pipe bent position 27 meters of airducts, the temperature of part fire water can reach 100 ℃, become steam, absorb the heat of flash evaporation drying tower, and under the effect of wind-force, along bend, spray into, flare is put out by water.Simultaneously part is not evaporated the fire water of vaporization or condensed water along smooth surface trickling in airduct, washes away and take away to be attached to the slurry that airduct surface is burnt, and can guarantee that so all slurries that catch fire clean out, and prevents from reviving.The time of thoroughly being put out by water to flare from unlatching blower fan is 1.4 hours.
Claims (5)
1. the extinguishing method of flash evaporation drying tower, it is characterized in that comprising the following steps: start all blower fans in flash evaporation drying tower, then open the inspection chamber of flash evaporation drying tower and airduct, from inspection chamber, inject fire water, fire water, under the effect of wind-force, is dispelled atomization, is blown in flash evaporation drying tower and airduct, and fire is put out by water, then start vapor heat exchanger, air is suitably heated.
2. the extinguishing method of flash evaporation drying tower according to claim 1, is characterized in that: described fire water, after injecting airduct, is heated, and makes the temperature of fire water reach 80～95 ℃.
3. the extinguishing method of flash evaporation drying tower according to claim 1, is characterized in that: fire water is injected from the inspection chamber of the airduct of 18 meters of flash evaporation drying towers.
4. the extinguishing method of flash evaporation drying tower according to claim 1, is characterized in that: fire water is injected from the first paragraph of flash evaporation drying tower and the inspection chamber of second segment airduct.
5. the extinguishing method of flash evaporation drying tower according to claim 4, is characterized in that: fire water is injected from the inspection chamber of the 3rd section of airduct of flash evaporation drying tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410370042.4A CN104117167B (en) | 2014-07-30 | 2014-07-30 | The extinguishing method of flash evaporation drying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410370042.4A CN104117167B (en) | 2014-07-30 | 2014-07-30 | The extinguishing method of flash evaporation drying tower |
Publications (2)
| Publication Number | Publication Date |
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| CN104117167A true CN104117167A (en) | 2014-10-29 |
| CN104117167B CN104117167B (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410370042.4A Active CN104117167B (en) | 2014-07-30 | 2014-07-30 | The extinguishing method of flash evaporation drying tower |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2416462A1 (en) * | 1973-04-04 | 1974-10-17 | Cifal S A | EQUIPMENT FOR PREVENTION OF AND PROTECTION AGAINST FIRE AND EXPLOSIONS IN THE TREATMENT ROUTES OF DISCONNECTED, COMBUSTIBLE PRODUCTS |
| FR2443255A1 (en) * | 1978-12-04 | 1980-07-04 | Fluidotermus | Fire protection for cereal dryer - has sensors to initiate water spray over dryer radiators to form steam and extinguish fire |
| JPS6066800A (en) * | 1983-09-20 | 1985-04-16 | 松下電器産業株式会社 | Drum type clothing dryer |
| CN2234078Y (en) * | 1995-05-12 | 1996-08-28 | 绥化市粉米厂 | Drying tower for grain |
| CN2489810Y (en) * | 2001-06-29 | 2002-05-08 | 吉林艾格瑞工贸有限公司 | Hot-blast crop drying machine with fire-fighting device |
| CN201101838Y (en) * | 2007-09-25 | 2008-08-20 | 盛平 | Water spray type pneumatic extinguisher |
| KR100974578B1 (en) * | 2010-02-24 | 2010-08-06 | 주식회사 더블유아이 | The fire fighting water spray equipment for drying system |
| CN202692661U (en) * | 2012-07-17 | 2013-01-23 | 山东农兴种业有限责任公司 | Fire control unit applied to cotton drying system |
| CN202853305U (en) * | 2012-07-19 | 2013-04-03 | 天津吉亚牧业集团有限公司 | Feed stoving tower |
| CN203469260U (en) * | 2013-08-02 | 2014-03-12 | 广东厨邦食品有限公司 | Drying equipment |
-
2014
- 2014-07-30 CN CN201410370042.4A patent/CN104117167B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2416462A1 (en) * | 1973-04-04 | 1974-10-17 | Cifal S A | EQUIPMENT FOR PREVENTION OF AND PROTECTION AGAINST FIRE AND EXPLOSIONS IN THE TREATMENT ROUTES OF DISCONNECTED, COMBUSTIBLE PRODUCTS |
| FR2443255A1 (en) * | 1978-12-04 | 1980-07-04 | Fluidotermus | Fire protection for cereal dryer - has sensors to initiate water spray over dryer radiators to form steam and extinguish fire |
| JPS6066800A (en) * | 1983-09-20 | 1985-04-16 | 松下電器産業株式会社 | Drum type clothing dryer |
| CN2234078Y (en) * | 1995-05-12 | 1996-08-28 | 绥化市粉米厂 | Drying tower for grain |
| CN2489810Y (en) * | 2001-06-29 | 2002-05-08 | 吉林艾格瑞工贸有限公司 | Hot-blast crop drying machine with fire-fighting device |
| CN201101838Y (en) * | 2007-09-25 | 2008-08-20 | 盛平 | Water spray type pneumatic extinguisher |
| KR100974578B1 (en) * | 2010-02-24 | 2010-08-06 | 주식회사 더블유아이 | The fire fighting water spray equipment for drying system |
| CN202692661U (en) * | 2012-07-17 | 2013-01-23 | 山东农兴种业有限责任公司 | Fire control unit applied to cotton drying system |
| CN202853305U (en) * | 2012-07-19 | 2013-04-03 | 天津吉亚牧业集团有限公司 | Feed stoving tower |
| CN203469260U (en) * | 2013-08-02 | 2014-03-12 | 广东厨邦食品有限公司 | Drying equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104117167B (en) | 2018-01-09 |
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