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燃气发电机组与燃气轮机的操作方式对比

来源:http://www.huannengpower.com   发布于:2019-04-24

燃气发电机组的发电效率通常在30%-40%之间,比较常见的机型普通可以抵达35%。燃气内燃机突出的优点正是发电效率比较高,其次是设备集成度高,安装快捷,关于气体中的粉尘恳求不高,基本不需求水,设备的单位千瓦造价也比较低。但是内燃机也有一些缺乏的中央,首先,内燃机熄灭低热值燃料时,机组出力明显降落,一台熄灭低热值8000大卡/立方米自然气燃料的500千瓦级燃气内燃发电机组,在运用低热值4000大卡/立方米的焦化煤气时,出力可能降落到350~400kW左右。

Generation efficiency of gas-fired generating units usually ranges from 30% to 40%, and the more common types can reach 35%. The most prominent advantages of gas internal combustion engine are high power generation efficiency, followed by high integration of equipment, fast installation, low dust appeal in gas, little water demand, and low unit kilowatt cost of equipment. But the internal combustion engine also has some deficiencies. Firstly, when the internal combustion engine extinguishes the low calorific value fuel, the output of the unit obviously drops. When a 500 kW gas-fired internal combustion generator unit extinguishes the low calorific value 8000 kcal/cubic meter natural gas fuel, the output may drop to about 350-400 kW when using the low calorific value 4000 kcal/cubic meter coking gas.

此外,内燃机需求频繁改换机油和火花塞,消耗材料比较大,也影响到设备的可用性和可靠性两个主要设备应用指标,对设备应用率影响比较大,有时不得不采取增加发电机组台数的办法,来消弭应用率低的影响。内燃机设备对焦化煤气中的水分子含量和硫化氢比较敏感,可能招致硫化氢和水构成硫酸腐蚀问题,需求采取一些必要措施加以抑制。

In addition, the internal combustion engine needs to change oil and spark plug frequently, which consumes a lot of materials. It also affects the usability and reliability of the two main equipment application indicators. It has a greater impact on the equipment application rate. Sometimes, it has to adopt the method of increasing the number of generating units to eliminate the impact of low application rate. Internal combustion engine equipment is sensitive to water molecule content and hydrogen sulfide in coking gas, which may cause hydrogen sulfide and water to form sulfuric acid corrosion problem. Some necessary measures should be taken to suppress it.

燃气轮机比较适用于高含氢低热值和气体含杂质较多的劣质燃料,一些燃气轮机以致运用原油和高硫渣油燃料。燃气轮机自身的发电效率不算很高,普通在30%~35%之间,但是产生的废热烟气温度高达450~550℃,可以经过余热锅炉再次回收热能转换蒸汽,驱动蒸汽轮机再发一次电,构成燃气轮机--蒸汽轮机分离循环发电,发电效率可以抵达45%~50%,一些大型机组以致可以超越55%。

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Gas turbines are more suitable for inferior fuels with high hydrogen content, low calorific value and more impurities in gases. Some gas turbines use crude oil and high sulfur residue fuels. The generation efficiency of gas turbine itself is not very high, usually between 30% and 35%, but the temperature of waste heat flue gas is as high as 450-550 C. It can be recycled by waste heat boiler to convert steam, drive steam turbine to generate electricity again, and form gas turbine-steam turbine separated cycle power generation. The generation efficiency can reach 45%-50%. Some large-scale units can exceed 55%. 。

采用燃气轮机的优势相对比较多,首先是设备的可用性和可靠性都比较高,综合应用率普通可以坚持在90%;其次,关于燃料的顺应性比较强,含硫、含尘高一点问题都不大;再有就是发电出力普通不会减少,以致由于燃料进气量增加而有所增加;此外,燃气轮机功率密度大致积小,比较适宜再移动,便于转移运转现场,这关于存在一些不肯定性的焦化厂项目的焦化煤气应用非常有利。

The advantages of using gas turbines are relatively more, firstly, the availability and reliability of the equipment are relatively high, and the comprehensive application rate can generally be maintained at 90%; secondly, the fuel compliance is relatively strong, and the problems of high sulfur and dust content are not serious; thirdly, the power output of power generation is generally not reduced, so that the fuel intake increases; moreover, the power density of gas turbines is high. The coking gas application of some uncertain coking plant projects is very favorable.

但是,世上的事务有一利,必有一弊,没有十全十美的事情。燃气轮机进气压力比较大,越是发电效率高的机组燃料进气压力越高,由于焦化煤气本身没有什么压力,这就需求运用燃气紧缩机,紧缩燃气需求消耗大量的能量,影响到设备的理论输出功率,一些项目以致需求消耗燃气轮机15%~20%的功率,关于分离循环项目抵达影响可能是10%~15%的输出功率;采用分离循环系统存在与蒸汽轮机相同的水资源条件恳求,系统比较复杂,投资也比较大,同时搬迁也比较困难。

However, there are advantages and disadvantages in the affairs of the world. There are no perfect things. The higher the intake pressure of gas turbine is, the higher the intake pressure of fuel of the unit with high power generation efficiency is. Because there is no pressure in the coking gas itself, it is necessary to use the gas compressor to tighten the gas demand and consume a lot of energy, which affects the theoretical output power of the equipment. Some projects result in the consumption of 15%~20% of the power of the gas turbine. The project of separation cycle arrives at the film. The noise may be 10%~15% of the output power; the separate circulation system has the same water resource conditions as the steam turbine, which makes the system more complex, the investment is larger, and the relocation is more difficult.

操作自然气发电机组有一些留意事项。我们在运用的时分常常会由于自己熟习操作流程而疏忽了操作前的检查。其真实操作自然气发电机组之前做好检查是很有必要的。特别是在初春的时节。由于天气逐渐变暖,户外环境的变化使自然气发电机组需求有一个顺应的过程。再者,零部件由于在冬季风比较大,容易呈现老化现象,一切呈现老化的零部件都要中止改换。细致的检查项目有以下几点:

There are some precautions for operating natural gas generating units. When we use it, we often neglect the pre-operation inspection because we are familiar with the operation process. It is necessary to check the natural gas generating units before they are actually operated. Especially in early spring. Due to the gradual warming of the weather, the change of outdoor environment makes the demand of natural gas generating units have a process of adaptation. Moreover, due to the relatively large winter monsoon, parts and components are prone to aging, and all aging parts and components should be discontinued and replaced. Detailed inspection items have the following points:

1.用心检查自然气发电机组,保证没有“三漏”问题,即:漏油、漏水、漏气等现象。保证导线衔接处的坚固。

1. Carefully inspect the natural gas generating units to ensure that there is no "three leakage" problem, that is, oil leakage, water leakage, air leakage and other phenomena. Guarantee the solidity of the wire connection.

2.保证自然气发电机组的润滑油油位,假设缺乏,应运用同一,同一质量的润滑油补足。

2. To ensure the lubricating oil level of natural gas generating units, assuming that there is a lack of lubricating oil, the same brand and the same quality of lubricating oil should be used to make up for it.

3.自然气发电机组的电压应在24—27V之间。

3. The voltage of natural gas generator set should be between 24-27V.

4.检查冷却液的液位,要确保冷却液的充足。

4. Check the level of coolant to ensure adequate coolant.

5.急停开关应在翻开的状态,以便于发作事故的时分自动弹出。保证自然气发电机组的缺点维护。

5. The emergency stop switch should be turned on in order to automatically pop up at the time of the accident. Guarantee the defect maintenance of natural gas generator set.

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This article is written by biogas generating units. For more products and more details, please pay attention to our official website http://www.huannengpower.com.


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