摘要
针对中国石化齐鲁分公司第二化肥厂丁辛醇装置羰基合成反应器中气相组分及弛放气中丙烷含量过高的问题，对影响丙烷含量的因素，包括丙烯羰基合成工艺技术、铑膦催化剂的质量浓度、原料丙烯中丙烷的含量、原料合成气中H2与CO体积比（氢碳比）和反应温度等进行分析。研究结果表明，提高原料丙烯的纯度、降低原料合成气的氢碳比、控制铑膦催化剂的质量浓度和反应温度稳定等可降低丙烷含量；通过控制铑催化剂的质量浓度在415～585 mg/kg、三苯基膦的浓度在87.8～119.6 g/kg、原料丙烯纯度为99.60%（φ）、原料合成气的氢碳比为1.015～1.029、反应温度为82～120℃，使弛放气中丙烷排放量减少0.897 t/h，生产每吨丁醛耗丙烯的量由0.645 t/t降至0.615 t/t。
Aimed at excessive propane contents in the carbonylation reactor and off-gas of butanol and octanol unit in the Second Chemical Fertilizer Plant of Sinopec Qilu branch,several influencing factors,namely the propylene oxo synthesis process,mass concentration of rhodiumtriphenylphosphine complex catalyst,propane content in propylene feedstock,H2/CO volume ratio in feedstock syngas and reaction temperature,were investigated. It was found that,the excessive propane contents could be reduced by increasing the propylene purity in feedstock,adjusting the volume ratio of H2/CO in feedstock syngas,controlling the mass concentration of the rhodiumtriphenylphosphine complex catalyst and stabilizing the reaction temperature. The propane emission from the oxo synthesis system off-gas was reduced to 0.897 t/h and the consumption of propylene for producing per ton butyraldehyde was decreased from 0.645 t/t to 0.615 t/t under the optimized conditions of rhodium catalyst concentration at 415-585 mg/kg,triphenylphosphine concentration 87.8-119.6 g/kg, propylene purity in feedstock 99.60%（φ）,H2/CO volume ratio in feedstock syngas 1.015-1.029 and reaction temperature 82-120℃.
出处
《石油化工》
CAS
CSCD
北大核心
2015年第11期1376-1381,共6页
Petrochemical Technology
关键词
丁辛醇装置
羰基合成
弛放气
丙烷
丙烯
三苯基膦
铑催化剂
butanol and octanol unit
oxo synthesis
off-gas
propane
propylene
triphenylphosphine
rhodium catalyst
