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D88尊龙內燃式燃氣發電機組與蒸汽輪機的使用區別

來源:http://dgxcbw.comD88尊龙   發布于:2018-03-12

內燃式燃氣發電機組的發電效率通常在30%-40%之間,比較常見的機型一般可以達到35%。內燃式燃氣發電機組突出的優點正是發電效率比較高,其次是設備集成度高,安裝快捷,對于氣體中的粉塵要求不高,基本不需要水,設備的單位千瓦造價也比較低。但是內燃機也有一些不足的地方,首先,內燃機燃燒低熱值燃料時,機組出力明顯下降,一臺燃燒低熱值8000大卡/立方米天然氣燃料的500千瓦級燃氣內燃發電機組,在使用低熱值4000大卡/立方米的焦化煤氣時,出力可能下降到350~400kW左右。此外,內燃機需要頻繁更換機油和火花塞,消耗材料比較大,也影響到設備的可用性和可靠性兩個主要設備利用指標,對設備利用率影響比較大,有時不得不采取增加發電機組臺數的辦法,來消除利用率低的影響。

D88尊龙The power generation efficiency of internal combustion gas turbine usually in common between 30% - 40%, the general model can reach 35%. The most outstanding advantage of the internal combustion gas generating set is that the power generation efficiency is relatively high. Secondly, the equipment is highly integrated, and the installation is fast. The requirement for the dust in the gas is not high, basically no water is needed, and the unit cost of the equipment is relatively low. The internal combustion engine but there are some deficiencies, firstly, the combustion of low calorific value fuel, the unit output decreased, a low calorific value gas 500 kilowatt diesel generator sets 8000 kcal / m3 of natural gas, coking gas in 4000 kcal / m3 using low calorific value, the output may drop to 350 ~ 400kW about. In addition, the internal combustion engine oil and spark plugs need frequent replacement, the material consumption is relatively large, but also affect the availability and reliability of the equipment of the two major equipment utilization index, a great impact on the equipment utilization rate, increase power generation units sometimes had to take measures to eliminate the influence of low utilization rate.

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內燃式燃氣發電機組設備對焦化煤氣中的水分子含量和硫化氫比較敏感,可能導致硫化氫和水形成硫酸腐蝕問題,需要采取一些必要措施加以克服。燃氣輪機比較適用于高含氫低熱值和氣體含雜質較多的劣質燃料,一些燃氣輪機甚至使用原油和高硫渣油燃料。

The internal combustion gas generator set is sensitive to the content of water molecules and hydrogen sulfide in coking gas, which may lead to sulfuric acid corrosion of hydrogen sulfide and water, and some necessary measures should be taken to overcome it. Gas turbine is suitable for low calorific value and high hydrogen containing gas containing impurities of low-grade fuel gas turbine, some even use crude oil and high sulfur residue fuel.

燃氣輪機自身的發電效率不算很高,一般在30%~35%之間。其優點是對于燃料的適應性比較強,含硫、含塵高一點問題都不大;再有就是發電出力一般不會減少,甚至因為燃料進氣量增加而有所增加;此外,燃氣輪機功率密度大體積小,比較適合再移動,便于轉移運行現場,這對于存在一些不確定性的焦化廠項目的焦化煤氣利用非常有利。

The gas turbine's own power generation efficiency is not very high, usually between 30% and 35%. The utility model has the advantages of strong adaptability for fuels, sulfur and dust high point problems are not big; then there is the general power output will not be reduced, or even because the fuel intake increased and increased; in addition, the gas turbine power density, small volume, and more suitable for mobile operation, it facilitates the transfer of this scene, for the existence of coking gas some of the uncertainty of the coking plant project uses very favorable.

D88尊龙但是,世上的事務有一利,必有一弊,沒有十全十美的事情。燃氣輪機進氣壓力比較大,越是發電效率高的機組燃料進氣壓力越高,因為焦化煤氣本身沒有什么壓力,這就需要使用燃氣壓縮機,壓縮燃氣需要消耗大量的能量,影響到設備的實際輸出功率,一些項目甚至需要消耗燃氣輪機15%~20%的功率,對于聯合循環項目達到影響可能是10%~15%的輸出功率;采用聯合循環系統存在與蒸汽輪機相同的水資源條件要求,系統比較復雜,投資也比較大,同時搬遷也比較困難。

But there is a pros and cons in the affairs of the world, and there is no perfect thing. Gas turbine inlet pressure is relatively large, the more the unit fuel inlet pressure high power generation efficiency is high, because the coking gas itself is not what pressure, which requires the use of gas compressor, compressed gas requires a lot of energy, affect the actual output power of the power equipment, even some of the projects need to consume 15%~20% gas turbine, the joint recycling project to achieve the effect may be the output power of 10%~15%; the combined cycle system requirements of water resources under the same conditions with the steam turbine, the system is more complex, the investment is relatively large, at the same time, the relocation is also difficult.

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