Polyethylene device reactor seed bed dehydration replacement apparatus

Abstract

The invention discloses a polyethylene device reactor seed bed dehydration replacement apparatus. The apparatus comprises a seed bed treatment tank, wherein the seed bed treatment tank is a pressure container with a jacket temperature control device assembled outside a shell layer, a discharge hole is formed in the bottom of the seed bed treatment tank, the discharge hole is communicated with a root pipeline, and a root valve is mounted on the root pipeline. According to the polyethylene device reactor seed bed dehydration replacement apparatus, an adjustable device is arranged at the discharge hole of the seed bed treatment tank, the adjustable device can be used for adjusting the opening and closing of the discharge hole, when dehydration replacement needs to be conducted in the seed bedtreatment tank, the discharge hole can be closed through the adjusting device, so that seed bed impurity removal can be achieved more precisely, and the problem that impurities in the root pipeline cannot be removed is effectively solved.

Description

technical field [0001] The invention relates to the technical field of seed bed dehydration and replacement, in particular to a polyethylene device reactor seed bed dehydration replacement device. Background technique [0002] The Unipol gas-phase full-density polyethylene process occupies a dominant position in the world's gas-phase polyethylene process. At present, 9 sets of Unipol polyethylene plants have been put into operation in my country, and another 11 sets are under construction, which is the number of sets in various polyethylene processes in my country. The one with the most and the largest production capacity. [0003] The existing patent number, CN104098722B, is a polyethylene device reactor seed bed dehydration replacement device and method, which provides a polyethylene device reactor seed bed dehydration replacement device and method. Only by installing the dehydration replacement device on the seed bed inlet of the original reactor, the rapid removal of imp...

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Problems solved by technology

[0004] However, there are certain problems in this patent. When dehydration and replacement are carried out inside the seed bed treatment tank, there is a certain amount of nitrogen and impurities in the root pipeline. These impurities are not in the seed bed treatment tank, and the removal of impurities in the seed bed cannot be achieved.

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