Neutralization device for preparation of vanadium catalyst for EPDM rubber

Abstract

The invention provides a neutralization device for preparation of a vanadium catalyst for EPDM rubber. The neutralization device comprises an alkalization reaction kettle, a filtering basin and a neutralization kettle sequentially from top to bottom, wherein the bottom of the alkalization reaction kettle is connected with the filtering basin through a pipeline, a drainage pipe for draining a vanadium catalyst purified liquid is mounted on the side surface of the filtering basin and connected with the neutralization kettle, and a bracket is mounted on the side surface of a main reaction kettle body; stirring paddles are mounted in the alkalization reaction kettle and the neutralization kettle and in drive connection with a variable-frequency servo motor, a vanadium-containing material feeding pipe and an alkali liquor injection pipe are mounted on the alkalization reaction kettle, and an acid liquor injection pipe is mounted at the top of the neutralization kettle; mass meters and delivery valves, which are electrically connected with a PLC, are arranged in the vanadium-containing material feeding pipe, the alkali liquor injection pipe and the acid liquor injection pipe; temperature sensors and PH detectors, which are connected with the PLC, are arranged in the main reaction kettle body and the neutralization kettle. The neutralization device for preparation of the vanadium catalyst for the EPDM rubber has the following beneficial effects: the device is simple in structure, energy-saving and environmentally friendly, materials are quantified accurately, and catalyst yield is higher.

Description

technical field [0001] The invention relates to the technical field of catalyst neutralization equipment, in particular to a preparation neutralization device for a vanadium-based catalyst for EPDM rubber. Background technique [0002] Vanadium-based catalysts with vanadium-containing compounds as active components are important catalysts for EPDM rubber. The preparation methods of vanadium-based catalysts mainly include mixed rolling method, impregnation method and sol-gel method. The mixed rolling method is to combine two A method of preparing a catalyst by mechanically mixing and rolling two or more substances, because the method is simple to operate and can be produced automatically, it has been widely used. The method requires a purification operation on the vanadium-containing material, specifically reacting the vanadium-containing material with an alkali solution, and then adding an acid solution to the mixed solution to obtain a purer vanadium-based catalyst. [000...

AI Technical Summary

Problems solved by technology

[0003] However, due to the uncontrollable amount of acid and alkali in the traditional neutralization device, it will affect the yield of pure vanadium-based catalysts

In addition, because the traditional neutralization device cannot remove the insoluble impurities in the vanadium-based catalyst, clarification work is required, which will prolong the total time of the neutralization reaction process of the vanadium-based catalyst, which will directly lead to the neutralization reaction of the vanadium-based catalyst Process productivity

Images