烟气环保排放下实施催化裂化降碳减排对策  

Implementation of Carbon Reduction and Emission Reduction Measures for Catalytic Cracking Under Environment-Friendly Emission of Flue Gas

作　　者：解慧敏 XIE Hui-min(PetroChina Fushun Petrochemical Company,Fushun Liaoning 113008,China)

机构地区：[1]中国石油抚顺石化公司,辽宁抚顺113008

出　　处：《当代化工》2022年第10期2425-2429,2440,共6页Contemporary Chemical Industry

摘　　要：在碳达峰、碳中和的大环境下,我国的NO_(X)排放要求愈发严格,某炼化公司重油催化装置践行绿色发展理念,在现有资源和工艺条件下,通过对影响碳减排的原因进行分析,并针对每个原因做出相应的措施,并对措施的效果做出了探索。从解决原料含氮高、再生系统跑剂、烟气脱硝氨逃逸以及反再操作参数优化等方面采取措施,措施实施后,增产3.5 MPa蒸汽6.46 t·h^(-1),减少燃料气耗量15 t·d^(-1),节约洗涤塔用新鲜水5~6 t·h^(-1),催化剂单耗降低0.089 kg·t^(-1),总液收提高0.42%。与同期相比减少烟气NO_(X)排放74.77 t,减少生焦和减少瓦斯耗量以及减少液化气排放,折合减少CO_(2)排放24467 t,减少汽包排污产生的废水22920 t,实现了环境与效益双赢。In the environment of carbon peak and carbon neutralization,China's NO_(x) emission requirements are becoming stricter and stricter.A heavy oil catalytic unit of a refining and chemical company practices the concept of green development.Under the existing resources and process conditions,through the analysis of the reasons affecting carbon emission reduction,corresponding measures were put forward for each reason,and the effect of the measures was explored.Measures were taken to solve the problems of high nitrogen content in raw materials,agent leakage in regeneration system,escape of ammonia from flue gas denitration and optimization of reverse operation parameters.After the implementation of the measures,3.5 MPa steam was increased by 6.46 t·h^(-1),fuel gas consumption was reduced by 15 t·d^(-1),fresh water for washing tower was saved by 5~6 t·h^(-1),unit consumption of catalyst was reduced by 0.089 kg·t^(-1),and total liquid yield was increased by 0.42%.Compared with the same period,the emission of flue gas NO_(x) was reduced by 74.77 t,the consumption of raw coke and gas and the emission of liquefied gas were reduced,equivalent to 24467 t of CO_(2) emission,and 22920 t waste water from drum blowdown was reduced,realizing a win-win situation of environment and benefits.

关 键 词：催化裂化 NOX 碱氮 排烟温度 低氮火嘴 

分 类 号：TQ028.1[化学工程]