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上海炼油厂于1983年6～7月催化裂化装置检修期间,在再生烟气系统的双动滑阀下方,串接了一只φ400毫米蝶阀,达到了以下收益:1.减少了烟气泄漏量,使烟气透平多作功.两器压差靠双动滑阀调节,其泄漏量和调节余量约占总烟气量的14%(相当于7000标米~3/时烟气未经烟气透平膨胀作功),串接蝶阀后,使用时蝶阀几乎处于全关状态,使烟气泄漏量可控制在3～5%左右。未投用蝶阀时,烟气透平进口流量为640标米~3/分左右,投用后为740标米~3/分左右,从而使烟气透平作功增加,经初步计算约可多回收200～300千瓦/时。2.以蝶阀代替双动滑阀控制两器压差。8月份投用以来使用情况良好,降低了主风机配置电机的电流,使主风机电流
During the overhaul of the catalytic cracking unit from June to July 1983 in Shanghai Refinery, a φ400 mm butterfly valve was connected in series with the double-acting spool valve of the regenerative flue gas system to achieve the following benefits: 1. Reduce the amount of flue gas leakage , So that more work for the flue gas turbine. Two pressure differential by double-acting slide valve regulation, the leakage and adjustment of the remaining volume accounts for about 14% of total gas (equivalent to 7000 standard meters ~ 3 / After the expansion of the flue gas turbine work), butterfly valve connected in series, the use of the butterfly valve is almost fully closed state, the flue gas leakage can be controlled at about 3 ~ 5%. When the butterfly valve is not used, the inlet flow of the flue gas turbine is about 640-3 m / min, and about 740-3 m / min after being put into use, so as to increase the work of the flue gas turbine. After preliminary calculations, Recycling 200 ~ 300 kW / h. 2. Butterfly valve instead of double acting spool valve control two pressure. Used in August since good condition, reducing the main fan motor current configuration, the main fan current