解決積灰結(jié)渣的好幫手—鍋爐吹灰器
發(fā)布時間:
2019-08-22 18:20
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First of all, let's understand what boiler ash accumulation and slagging are. Boiler ash accumulation and slagging refer to the accumulation of a large number of small ash particles generated during fuel combustion, as they flow towards the outlet with the flue gas. Due to the surface tension of the ash particles, the viscous force between particles and their inner tube walls, molecular adhesion, electrostatic attraction, and chemical affinity, they accumulate on the heat exchange surfaces of the boiler wall and flue sections. The composition of fuel, boiler load and combustion conditions, as well as the boiler spray combustion device, all have an impact on the ash accumulation in the boiler.
鍋爐積灰結(jié)渣是個普遍存在的問題,對于鍋爐運行的經(jīng)濟性影響很大。加熱爐受熱面的積灰不僅影響受熱面的傳熱效率,導致爐子效率下降,而且由于除灰措施不當或除灰技術(shù)自身的局限性,導致加熱爐受熱面的積灰日趨加劇,影響加熱爐后期的穩(wěn)定運行。當受熱面積灰和結(jié)渣嚴重時,還可能導致意外停爐,造成重大經(jīng)濟損失。因此鍋爐受熱面一定要定時淸掃、吹灰,采用鍋爐吹灰器是消除積灰、堵灰的有效方法。
Ash accumulation and slagging in boilers are a common problem that has a significant impact on the economy of boiler operation. The accumulation of ash on the heating surface of the heating furnace not only affects the heat transfer efficiency of the heating surface, leading to a decrease in furnace efficiency, but also intensifies due to improper ash removal measures or the limitations of ash removal technology, which affects the stable operation of the heating furnace in the later stage. When the heating area is severely dusty and slagging, it may also lead to accidental shutdown, causing significant economic losses. Therefore, the heating surface of the boiler must be regularly cleaned and blown, and using a boiler soot blower is an effective method to eliminate dust accumulation and blockage.
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在技術(shù)領域的支持下,總結(jié)出鍋爐吹灰器除灰內(nèi)燃的技術(shù)及原理,鍋爐的內(nèi)燃過程實際上是一種極其復雜的物理化學反應過程,但是由于受燃煤的特性、受熱面上的結(jié)構(gòu)、爐內(nèi)的溫度場水平就越來越高及空氣動力工況等物質(zhì)因素,造成整個受熱面積的灰與結(jié)渣,使鍋爐設備出力也不斷的下降。而國內(nèi)的動力用煤多使用的是低品劣質(zhì)煤,鍋爐的燃煤多存在變且灰份也非常的大、熱值也在不斷的降低的趨勢,這就自然的加劇著受熱面的積灰結(jié)焦的過程形成。<BR/> With the support of the technical field, the technology and principle of internal combustion in boiler soot blower have been summarized. The internal combustion process of the boiler is actually an extremely complex physical and chemical reaction process. However, due to the characteristics of coal, the structure of the heating surface, the temperature field level inside the furnace becoming higher and higher, and aerodynamic conditions and other material factors, the ash and slag deposition in the entire heating area are caused, resulting in a continuous decrease in the output of the boiler equipment.
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在設備的運行過程中,鍋爐吹灰器以高端的清灰機理以及自身擁有的性能占據(jù)市場,由于灰粒子的表面的引力、粒子之間及粒子與爐內(nèi)管壁之間存在著一定粘結(jié)力、分子的附著力和靜電引力以及設備自然存在的化學親和力等多方面的性能作用,使設備在爐膛及煙道各部位的換熱面上不斷的逐步形成積灰結(jié)焦。而鍋爐吹灰器中的煙氣灰粒是一種寬篩分組成,所以大部分都是小于220um,其中多數(shù)為10~30um的微小粒。<BR/> During the operation of the equipment, the boiler soot blower occupies the market with its high-end cleaning mechanism and its own performance. Due to the surface attraction of ash particles, the presence of certain bonding forces between particles and the furnace wall, molecular adhesion and electrostatic attraction, as well as the natural chemical affinity of the equipment, and other performance effects, Gradually form ash and coking on the heat exchange surfaces of the furnace and flue of the equipment. The flue gas ash particles in the boiler soot blower are composed of a wide sieve, so most of them are smaller than 220um, with most of them being small particles of 10-30um.