Jilin Petrochemical's Hexane Bromine Value Steadily Declines

Source: www.gulfoilandgas.com 11/11/2021, Location: Asia

The hexane adsorption project of the ethylene-propylene rubber C unit of Jilin Petrochemical Company has been running for 50 consecutive days, and the ethane bromine index has dropped from 385 mg/kg to less than 200 mg/kg. , The Mooney index of the J-3092E oil-extended rubber product produced was reduced by 66.6%.

Hexane, as the circulating "blood" of the ethylene-propylene rubber device, has a greater impact on the operation cycle of the device and the quality of the product. During the production of EPDM rubber, the bromine index in the hexane of the system will gradually increase, which is prone to problems such as fluctuations in the polymerization reaction and darkening of the finished rubber. To this end, the company established a joint research team to find through system investigation that after the regeneration of waste catalysts in styrene and other devices, it can effectively adsorb unsaturated olefins in hexane and ensure that the hexane bromine value that enters the polymerization reaction is stable. After the addition of the adsorption tank, it is expected that the annual hexane treatment can be reduced by more than 500 tons, and the cost can be saved by 269,000 yuan.

In the next step, Jilin Petrochemical will further optimize the hexane adsorption device, regenerate the adsorbent, and adopt intermittent use according to the adsorption situation to continuously improve the operation cycle and economic benefits.


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