Light aromatic hydrocarbon hydrogenation transformation device and operation method thereof

Abstract

The invention relates to the technical field of light aromatic hydrocarbon hydrogenation device, and discloses a light aromatic hydrocarbon hydrogenation transformation device and an operation methodthereof, wherein the device includes a raw material tank; the right side of the raw material tank is fixedly connected with a connecting pipe, the right side of the connecting pipe is fixedly equippedwith a flow control valve, and the right side of the flow control valve is fixedly connected with a through pipe; the right side of the through pipe is fixedly provided with a pre-hydrogenation heatexchanger; the right side of the pre-hydrogenation heat exchanger is fixedly connected with a right-angle pipe; the bottom end of the right-angle pipe is fixedly connected with a deweighting tower. According to the light aromatic hydrocarbon hydrogenation transformation device and the operation method thereof, by arrangement of the pre-hydrogenation heat exchanger, a reboiler and a pressure control valve, the temperature of a light aromatic hydrocarbon material is changed due to heat exchange of the pre-hydrogenation heat exchanger, and the pressure intensity and temperature inside the deweighting tower are controlled by the pressure control valve and the reboiler, so that the light aromatic hydrocarbon material can be separated to obtain light component oil in the deweighting tower, and raw materials are provided for later hydrogenation treatment.

Description

technical field [0001] The invention relates to the technical field of light aromatics hydrogenation devices, in particular to a light aromatics hydrogenation transformation device and an operation method. Background technique [0002] Cracked light aromatic fraction is a by-product of ethylene cracking, accounting for 10% to 15% of cracked ethylene production. A set of ethylene plant with an annual output of 1 million tons can produce 100,000 to 150,000 tons of light aromatics raw materials per year. In recent years , the rapid development of my country's petrochemical industry, especially the improvement of ethylene production capacity, has led to an increase in the output of cracked light aromatics. How to make full and reasonable use of this part of resources to make the best economic benefits will affect the overall efficiency of ethylene plants and the by-products of ethylene The development of deep processing of resources has a major impact. [0003] In the process of ...

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Problems solved by technology

[0005] The present invention provides a light aromatics hydrogenation modification device and an operation method, which has the advantages of good cracking and separation effect, and solves the problem of cracking and separation of light aromatics aromatic components in the currently used light aromatics hydrogenation device. Use hydrogen to react with light aromatic hydrocarbon components to saturate dienes, but in this way, there is no way to effectively remove S, N, O and impurities in light aromatic hydrocarbon components, so that the oil properties change Poor, and lead to substandard products, not only wasting resources, but also increasing the production cost of the enterprise

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