INSTALLATION AND METHOD FOR OBTAINING POLYALPHAOLEFINS Russian patent published in 2023 - IPC B01J19/00 C08F4/52 C10M107/10 C07C4/06 

FIELD: polyalphaolefins.

SUBSTANCE: invention is related to an installation for production of polyalphaolefins. The installation for producing polyalphaolefins contains a mixing unit, a microchannel reaction unit, a high-pressure separation unit, a low pressure separation unit, a gas circulation unit, a post-processing unit and a pressure control unit, wherein the mixing unit, the microchannel reaction unit, the high pressure separation unit, the separation unit low pressure and gas circulation unit are connected in series. The microchannel reaction unit is provided with a BF3 gas inlet, the mixing unit is equipped with an auxiliary raw material inlet and an olefin raw material inlet, the gas circulation unit is connected to the BF3 gas inlet, the low pressure separation unit is connected to the post-processing unit, the high pressure separation unit, the pressure control unit and the gas circulation unit are connected in series, and optionally the post-processing unit is connected to the mixing unit, where the microchannel reaction unit is one microchannel reactor or a combination of two or more microchannel reactors. Moreover, the microchannel reactor has the following structure and parameters: the reaction channel consists of 2-10000 parallel channels, preferably 2-5000 channels, more preferably 2-500 channels, the operating temperature range is from -70 to 300°C, the permissible maximum reaction pressure does not exceed 20 MPa, the permissible maximum pressure of the heat exchange medium does not exceed 10 MPa; he volume of the liquid channel without mixing inserts is 0.1-20000 L, the volumetric flow rate is 1-50000 L/h. A mixing element that facilitates mixing of the reaction streams is provided in each reaction channel, preferably the microchannel reactor is provided with a main pipe for introducing reaction gas and outlet pipes for distributing the reaction gas into each reaction channel, and the microchannel reactor includes: a housing; a feed zone, a mixing zone, a reaction zone and a collection zone arranged in series and in communication along a first direction in the housing, the housing being provided with a supply pipe in communication with the supply zone and an outlet pipe in communication with the collection zone, and the zone mixing is equipped with a mixing channel running along the first direction; liquid distribution pipe; the liquid distribution pipe extends from the outside of the housing into the mixing channel, the liquid distribution pipe is connected to a liquid distributor at the end of the mixing channel; a supply pipe is connected to the mixing unit and is configured to introduce a mixture of olefin feedstock and auxiliary raw materials, a liquid distribution pipe is connected to the BF3 gas inlet and is configured to introduce the BF3 gas, and an outlet pipe is connected to the high pressure separation unit. The invention is also related to a method for producing polyalphaolefins.

EFFECT: development of a plant and method for producing alpha-olefin oligomers, which are characterized by high conversion, high selectivity, simplicity of the process, low capital investment, safety and environmental friendliness, and also have low kinematic viscosity and high viscosity index.

19 cl, 8 dwg, 13 tbl, 12 ex