炼化尾气发电机的发展背景

Development background of refining tail gas generators

　　炼化行业生产过程中会产生大量的含低浓度烃类尾气，其烃类组分主要有乙烯、丙烯等，平衡气为氮气。该类尾气目前常规处理方法是进入火炬燃烧，或简单吸附处理后排至大气，其烃类浓度远远达不到排放标准的要求。随着我国能源需求的不断增长以及化石能源的消耗带来环境压力的不断加剧，非传统能源和可再生能源的开发利用越来越受到重视，而且国家对节能减排的支持力度也越来越大。

In the production process of the refining industry, a large amount of low concentration hydrocarbon tail gas is generated, and its hydrocarbon components mainly include ethylene, propylene, etc. The equilibrium gas is nitrogen. The current conventional treatment method for this type of exhaust gas is to enter the torch combustion or simply adsorb and treat it before discharging it into the atmosphere, but its hydrocarbon concentration far does not meet the requirements of emission standards. With the continuous growth of energy demand in China and the increasing environmental pressure caused by the consumption of fossil fuels, the development and utilization of non-traditional and renewable energy sources are receiving increasing attention, and the country's support for energy conservation and emission reduction is also increasing.

　　在发电机设备中，发动机作为动力设备常常需要耗费大量的燃料，由于炼化尾气中含有大量的可燃性气体，可以作为燃气发动机的燃料使用，大大提高资源的利用率。

In generator equipment, the engine, as a power equipment, often requires a large amount of fuel consumption. Due to the large amount of combustible gases in refining exhaust gas, it can be used as fuel for gas engines, greatly improving resource utilization.

　　目前，国内大多数燃气发电机组采用空气与燃气预混合后进入气缸内燃烧，这种机型进气回火严重时，可以导致进气管炸裂等一系列安全问题的发生；

At present, most gas generator sets in China use air and gas pre mixed before entering the cylinder for combustion. When the intake backfire of this type of machine is severe, it can cause a series of safety problems such as intake pipe explosion;

　　其次，由于炼化尾气是大量可燃气体的混合物，若要较好地控制空燃比的话，必须准确掌握炼化尾气进入到进气系统中的浓度以对进气阀门有效调节；

Secondly, due to the fact that refining exhaust gas is a mixture of a large amount of combustible gases, in order to effectively control the air-fuel ratio, it is necessary to accurately grasp the concentration of refining exhaust gas entering the intake system to effectively regulate the intake valve;

　　另外，炼化尾气中含有部分焦油，焦油成分复杂，有些炼化尾气在收集的过程中已经分离了焦油，但是仍有一部分焦油混合在准备输入进气系统的炼化尾气中，而且即便是存在少量的焦油，随着发电机使用时间的延长就会粘结在发动机中，对炼化尾气的燃烧具有一定的影响，并且影响活塞的气密性。

In addition, the refining exhaust gas contains some tar, which is complex in composition. Some refining exhaust gases have already separated tar during the collection process, but there is still a portion of tar mixed in the refining exhaust gas that is ready to be input into the intake system. Even if there is a small amount of tar, it will stick to the engine as the generator is used for a long time, which has a certain impact on the combustion of the refining exhaust gas and affects the airtightness of the piston.

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