Cyclohexane oxidation tail gas treatment method and device

Abstract

The invention relates to a cyclohexane oxidation tail gas treatment method and a device. The cyclohexane oxidation tail gas treatment method comprises the following steps that (a), heating is carried out on oxidation tail gas; (b), the heated oxidation tail gas is fed into a turbine generator set for expansion power generation; (c), the expanded oxidation tail gas is burnt; and (d), the incinerated oxidized tail gas is discharged into the atmosphere. According to the cyclohexane oxidation tail gas treatment method and the device, the oxidation tail gas discharged by an oxidation kettle is discharged after being treated in the modes of heating, expansion power generation and incineration, the oxidation tail gas can be thoroughly treated and can reach various emission standards, tail gas pressure and RTO combustion heat can be reasonably utilized, and therefore energy is recycled as much as possible, and the device plays an important role in effectively utilizing the energy, protecting the environment and the like.

Description

technical field [0001] The invention relates to the technical field of cyclohexane oxidation tail gas treatment, in particular to a cyclohexane oxidation tail gas treatment method and device. Background technique [0002] The tail gas of the cyclohexane oxidation process in the production of cyclohexanone comes from the oxidation kettle. The general treatment method is to recover some useful organic components such as cyclohexane and cyclohexanol through the tail gas absorption tower, and then transport it to the flare to vent through the pipeline. . [0003] The tail gas absorbed by the absorption tower contains about 97% of nitrogen, about 2% of oxygen, about 0.35% of CO, about 0.45% of organic components such as cyclohexane, the pressure is about 1.1-1.2MPa, and the temperature is about 3-4°C. Oxygenated tail gas emissions from a cyclohexanone plant with a production scale of 100,000 tons / year are about 16,000-20,000 Nm 3 / h, the venting volume and pressure of the tail ...

AI Technical Summary

Problems solved by technology

Oxidation tail gas emission of cyclohexanone plant with a production scale of 100,000 tons / year is about 16,000-20,000 Nm 3 / h, the venting volume and pressure of the tail gas are relatively large, and it contains organic components such as cyclohexane and cyclohexanol with high value. Direct venting will waste a lot of energy resources and have a certain impact on the environment

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