Process for directly heating electric tubes for hydrocarbon upgrading

A process for upgrading a hydrocarbon fluid comprising:

• introducing the hydrocarbon fluid into a fluid entrance of a feed channel;
• introducing a first portion of the hydrocarbon fluid into an inlet of a first electrically conductive tube;
• introducing a second portion of the hydrocarbon fluid into an inlet of a second electrically conductive tube;
• applying DC current to the first electrically conductive tube to heat the first portion of the hydrocarbon fluid within the first electrically conductive tube to a first reaction temperature to form a first product stream;
• applying DC current to the second electrically conductive tube to heat the second portion of the hydrocarbon fluid within the second electrically conductive tube to a second reaction temperature to form a second product stream;
• introducing the first product stream into a product channel through an outlet of the first electrically conductive tube;
• and
• introducing the second product stream into the product channel through an outlet of the second electrically conductive tube.