Energy-saving fractionation device for xylene production

A fractionation device and a technology for xylene, applied in the field of xylene fractionation, can solve the problems of inability to move dynamically and the completeness of xylene adsorption is not enough, and achieve the effects of saving usage, improving saving effect, and improving the completeness of adsorption

CN113842659AActive Publication Date: 2021-12-28东营威联化学有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-12-28

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Abstract

The present invention discloses an energy-saving fractionation device for xylene production, and relates to the technical field of xylene fractionation. The energy-saving fractionation device for xylene production comprises a first box body and a second box body installed at the bottom of the first box body, wherein the bottom of the second box body is rotatably provided with a vertical screw, a driving mechanism in transmission connection with the top end of the screw is fixed to the top of the first box body, the top of the screw is sleeved with a sleeve in a threaded mode, a first circular plate and a second circular plate are fixed to the two ends of the sleeve correspondingly, the circumferential outer walls of the first circular plate and the second circular plate are close to and do not make contact with the inner walls of the first box body and the second box body, a vertical pipe is fixed between the first circular plate and the second circular plate, and a plurality of sets of annularly-distributed adsorption plates are fixed to the circumferential outer wall of the vertical pipe. The adsorption plates can fully adsorb stock solutions at different heights in the first box body and the second box body in the lifting process, and the usage amount of a desorption solution is reduced.
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Description

technical field

[0001] The invention relates to the technical field of xylene fractionation, in particular to an energy-saving fractionation device for xylene production. Background technique

[0002] In the existing xylene fractionation device, the p-xylene in the C8 aromatics is often separated from the other three isomers by using selective adsorbents and desorbents to achieve the purpose of producing high-purity p-xylene. For the differences in the adsorption capacity of the four C8 aromatic isomers, ethylbenzene, m-xylene and o-xylene with weaker adsorption capacity are quickly desorbed from the adsorbent with the desorbent, called raffinate The p-xylene with strong adsorption capacity is selectively adsorbed by the adsorbent, and then slowly desorbed from the adsorbent with the desorbent, which is called the extraction liquid, so as to achieve the purpose of separating p-xylene.

[0003] The Chinese invention patent with publication number CN111957071A in the prior ar...

Examples

Embodiment Construction

[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them.

[0032] The components of the embodiments of the invention generally described and shown in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the...