丙烯酸氧化反应空气流量控制方案探讨

Discussion of the Air Flowrate Control Scheme for the Acrylic Oxidation Reaction

对于丙烯酸生产工艺来说,进入氧化反应器的空气流量是一个非常重要的操作参数,氧化反应器内的空气与丙烯的氧化反应是一个剧烈的放热反应,操作过程复杂,危险性大,要求进入反应器的空气量必须控制在安全值范围内,否则将导致反应器爆炸及其他危险状况。结合丙烯酸生产工艺要求,分析了氧化反应空气流量控制的重要性、控制特点和丙烯酸氧化反应空气流量控制方案。具体讨论空气流量温压补偿方案、流量选择控制及装置故障状态下联锁顺序控制方案并简单叙述蒸汽透平空压机的防喘振控制系统。

Regarding the acrylic acid production process, air flowrate entering the oxidation reactor is a very important operation parameter. The oxidation reaction between air and propylene in the reactor is a fierce exothermic reaction. The operation process is complicated and dangerous, air quantity entering the reactor should be controlled within the safety range, otherwise it may cause explosion and other dangerous situations. The importance of air flowrate control, characteristics of control and air flowrate control scheme are analyzed based the process requirements. The temperature and pressure compensatory scheme of air flowrate, flowrate selection control and interlock sequence control scheme under breakdown state have been specifically discussed. The anti-surge control system of air compressor with steam turbine is briefly described.