Systems for recovery and re-use of waste energy in crude oil refining facility and aromatics complex

A system comprising:

• an aromatics complex of a crude oil refining facility, the aromatics complex configured to perform at least one oil refining process, the aromatics plant included in a plurality of oil refining plants of the crude oil refining facility, a plurality of streams at respective temperatures flowing between the plurality of oil refining plants, wherein the aromatics complex comprises a plurality of aromatics complex sub-units comprising an aromatics complex xylene products separation unit and a benzene extraction unit;
• a first oil refining plant included in the plurality of oil refining plants, the first oil refining plant being different from the aromatics complex, wherein the plurality of oil refining plants comprise a sulfur recovery plant, a gas separation plant through which a gas separation plant stream comprising at least one of C2 to C4 flows, a hydrogen plant, a sour water stripper plant, an amine regeneration plant through which an acid gas regenerator bottoms stream comprising a weak amine salt flows, and a diesel hydro-treating plant;
• a flow control system connected to the plurality of oil refining plants, the flow control system configured to:
• flow an aromatics complex stream comprising a raffinate overheads column stream in the aromatics complex to a first heat exchanger of a heat exchanger system comprising one or more heat exchangers, and
• flow a first stream from the first oil refining plant to the first heat exchanger;
• and
• the heat exchanger system comprising:
• the first heat exchanger configured to transfer heat between the aromatics complex stream and the first stream from the first oil refining plant.