公开(公告)号：US20210170378A1

公开(公告)日：2021-06-10

申请号：US17048944

申请日：2019-06-11

申请人： Inner Mongolia Yitai Coal-based New Materials Research Institute Co., Ltd.

发明人： Zhen Qian ,  Jingwei Wu ,  Juncheng Li ,  Xiaolong Zhang ,  Hongcheng Cao ,  Yuan Gao ,  Xueting Wu

IPC分类号： B01J29/90 ,  B01J38/56 ,  C07C2/66

摘要： A regeneration method for a benzene alkylation solid acid catalyst, comprising: purging the solid acid catalyst in a reactor with a gas; continuously injecting n-hexane at a feed port of the reactor and heating the n-hexane to wash the solid acid catalyst, and discharging the n-hexane entraining benzene alkylation reaction residues from a discharge port of the reactor; and stopping injecting n-hexane, cleaning off a liquid in the reactor by purging with the gas, and cooling the reactor. In the regeneration method of the present disclosure, the regeneration liquid used is n-hexane, which can increase the solubility of the residues in channels and enhance the regeneration effect. Meanwhile, permanent damage to the channel structure of the catalyst caused by carbon burning regeneration can be avoided, thereby prolonging the lifetime of the catalyst.

公开(公告)号：US11524282B2

公开(公告)日：2022-12-13

申请号：US17048944

申请日：2019-06-11

申请人： Inner Mongolia Yitai Coal-based New Materials Research Institute Co., Ltd.

发明人： Zhen Qian ,  Jingwei Wu ,  Juncheng Li ,  Xiaolong Zhang ,  Hongcheng Cao ,  Yuan Gao ,  Xueting Wu

IPC分类号： B01J29/90 ,  B01J38/56 ,  C07C2/66

摘要： A regeneration method for a benzene alkylation solid acid catalyst, comprising: purging the solid acid catalyst in a reactor with a gas; continuously injecting n-hexane at a feed port of the reactor and heating the n-hexane to wash the solid acid catalyst, and discharging the n-hexane entraining benzene alkylation reaction residues from a discharge port of the reactor; and stopping injecting n-hexane, cleaning off a liquid in the reactor by purging with the gas, and cooling the reactor. In the regeneration method of the present disclosure, the regeneration liquid used is n-hexane, which can increase the solubility of the residues in channels and enhance the regeneration effect. Meanwhile, permanent damage to the channel structure of the catalyst caused by carbon burning regeneration can be avoided, thereby prolonging the lifetime of the catalyst.