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常压蜡油和减压蜡油催化裂化时,乙烯产率为57~9.98kg/m‘。催化裂化尾气中乙烯含量(体积分数)为8%~18%,通常作为燃料气烧掉。将石脑油或柴油进行蒸汽裂解时,乙烯产率为26%~36%,而以催化裂化原料计算,其乙烯产率约为0.7%~1.l%。由于催化裂化处理量很大,即
Atmospheric wax oil and vacuum wax oil catalytic cracking, the ethylene yield of 57 ~ 9.98kg / m ’. Ethylene content (volume fraction) in FCC tail gas is 8% ~ 18%, usually burned as fuel gas. Ethylene production is 26% to 36% for naphtha or diesel steam cracking and about 0.7% to 1 for ethylene based on the catalytic cracking feedstock. l%. Due to the large amount of catalytic cracking, that is