【摘要】：由于國家環(huán)保要求和老舊機(jī)組改造等客觀因素的影響,早期投產(chǎn)的脫硫系統(tǒng)大多安裝了GGH。國內(nèi)部分火電機(jī)組脫硫系統(tǒng)自投產(chǎn)以來,一直未能進(jìn)入正常狀態(tài),其中共同原因之一是由于GGH堵塞,系統(tǒng)阻力增大,增壓風(fēng)機(jī)超負(fù)荷運(yùn)行,為防止增壓風(fēng)機(jī)出現(xiàn)喘振、失速,均不得不長期開啟旁路運(yùn)行,導(dǎo)致脫硫系統(tǒng)不能安全穩(wěn)定運(yùn)行,以及火電機(jī)組的經(jīng)濟(jì)性和環(huán)保性。針對上述問題,結(jié)合同類電廠的實際情況,先后開展了多工況下煙氣流場測試、除霧器出口液滴含量測試、除霧器性能分析、GGH積垢成分測試和分析、GGH吹灰器吹灰效果測試、除霧器進(jìn)口煙氣流場分析及優(yōu)化、GGH版型及性能分析、GGH積垢化學(xué)清洗實驗等,并進(jìn)行了多次深入研討、分析,逐步掌握了GGH堵塞的原因,提出了相應(yīng)的解決辦法,并進(jìn)行部分實踐,取得了良好的效果,為解決GGH堵塞問題,達(dá)到長周期穩(wěn)定運(yùn)行的目的奠定了堅實的基礎(chǔ)。
[Abstract]:As a result of the objective factors such as the national environmental protection requirements and the transformation of the old units, GGH is mostly installed in the desulfurization system which is put into operation in the early stage. Since the desulfurization system of the domestic part of the thermal power unit has been unable to enter the normal state since the operation, one of the common reasons is that the system resistance is increased due to the blockage of the GGH, the pressure booster fan is overloaded, and the bypass operation has to be started for a long time in order to prevent surge and stall of the booster fan, Leading to the non-safe and stable operation of the desulfurization system and the economic and environmental protection of the thermal power unit. In view of the above problems, in combination with the actual situation of the same type of power plant, the test of the smoke gas flow field, the drop content test of the outlet of the demister, the performance analysis of the demister, the component testing and analysis of the GGH scale and the test of the soot blowing effect of the GGH soot blower have been carried out successively. The analysis and optimization of the flue gas flow field of the demister, GGH type and performance analysis, GGH scale chemical cleaning experiment, etc., have been carried out many times, and the reason of GGH blocking is analyzed, the corresponding solution is put forward, and some practice is carried out, and the good effect is achieved. In ord to solve that problem of the GGH blockage, a solid foundation is laid for the purpose of long-period stable operation.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X773

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本文編號：2509060