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呼炼催化裂化装置掺炼减压渣油后，由于原料变重，造成转化率降低，轻质油收率降低。后采用高反应温度，大剂油比来提高转化率。虽然转化率提高，但最终的产品分布并不理想，主要表现为二次反应产物增加，主要目的产品产率未见相应增加。对此，他们决定在提高反应苛刻度的同时，采用提升管注终止剂技术来抑制二次反应。实际生产表明；FCC原料变重后，在采用高反应温度，大剂油比的前提下，应用终止剂技术经济效益非常显著。
After the carbonization catalytic cracking unit blends the vacuum residue, the conversion of the raw materials becomes heavier, resulting in the decrease of the light oil yield. After the use of high reaction temperature, high oil ratio to improve the conversion rate. Although the conversion rate increased, but the final product distribution is not ideal, mainly for the secondary reaction products increased, the main purpose of the product yield did not increase accordingly. In response, they decided to raise the reaction severity at the same time, the use of riser pipe terminator technology to suppress secondary reactions. The actual production shows that, after the weight of the FCC raw material becomes heavy, the technical economic benefits of using the terminator under the premise of adopting high reaction temperature and large oil-to-oil ratio are very significant.