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Slurry catalyst feeding system

A technology of feeding system and catalyst, applied in feeding device, chemical recovery, chemical instruments and methods, etc., can solve the problems affecting the stable operation of catalyst performance evaluation test and the uncertainty of scientific research project data, etc.

Pending Publication Date: 2022-05-27
迈瑞尔实验设备(上海)有限公司
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Problems solved by technology

The existing catalyst slurry feeding system has the phenomenon that the pump cannot be used as a whole and the catalyst settles in the pipeline, which greatly affects the performance evaluation of the catalyst and the stable operation of the test, resulting in the uncertainty of scientific research project data

Method used

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Embodiment

[0014] like figure 1 , 2 As shown, it is a slurry catalyst feeding system provided by the present invention, which comprises a main catalyst preparation tank 1, and a stirring device is arranged in the main catalyst preparation tank 1. The top of the main catalyst preparation tank 1 is provided with an interface 1 N1, an interface four N4, an interface five N5, an interface seven N7, a pressure interface P, and a safety discharge port V. The bottom of the main catalyst preparation tank 1 is provided with an interface six N6. The main catalyst preparation tank 1 The left side is provided with a high liquid level port L2 and a low liquid level port L1 which are connected by the liquid level gauge 8, the middle and lower part of the right side of the main catalyst preparation tank 1 is provided with the second port N2, the third port N3, the low pressure nitrogen main pipe A passes through Check valve 1 VC-1 is connected to ball valve 1 VB-01, ball valve 2 VB-02, ball valve 2 VB...

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Abstract

The invention discloses a slurry catalyst feeding system which comprises a main catalyst preparation tank, the top of the main catalyst preparation tank is connected with a low-pressure nitrogen supplementing header pipe, a cocatalyst feeding pipe, a hexane feeding pipe and a catalyst feeder, and the top safety discharge and the bottom liquid discharge of the main catalyst preparation tank are both communicated with a kerosene sealing tank. A discharge hole in the middle of the main catalyst preparation tank is connected with a filter valve group, an inlet of the filter valve group is also communicated with a low-pressure nitrogen header pipe and a high-pressure washing hexane pipeline, and an outlet of a filter is connected with a reaction system through a catalyst feeding pump, a flow meter and a switch valve. According to the slurry catalyst feeding system provided by the invention, the slurry catalyst is prevented from settling in the operation process of the pump, the catalyst is prevented from remaining above the valve ball of the inlet and outlet one-way valve of the catalyst feeding pump, the catalyst feeding pump cannot feed the catalyst, the metering of the catalyst feeding system is prevented from being influenced, and the metering is more accurate.

Description

technical field [0001] The invention relates to a catalyst feeding system for a slurry method polyethylene pilot plant, which belongs to the technical field of liquid catalyst filling equipment in the polymerization industry. Background technique [0002] With the increasing demand of the polyolefin industry, more and more polymerization units use the slurry method to start the research and development of new processes, and the precise measurement of catalyst addition is particularly important as the core system of the slurry unit. In the overall use of the existing catalyst slurry feeding system, there are phenomena that the pump cannot be pumped up and the catalyst settles in the pipeline, which greatly affects the performance evaluation of the catalyst and the stable operation of the test, resulting in the uncertainty of scientific research project data. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is the problem of accur...

Claims

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Application Information

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IPC IPC(8): B01J4/00B01J4/02
CPCB01J4/001B01J4/02B01J2204/002Y02P20/584
Inventor 张琼
Owner 迈瑞尔实验设备(上海)有限公司
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