Process for the at least partial elimination of carbon deposits in a heat exchanger
US6929015B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 14, 2003 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Feb 11, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28G13/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The invention proposes a process and device for the at least partial elimination of carbon deposits in a heat exchanger in which an oxidation treatment is carried out comprising at least one controlled-oxidation stage at a conventional temperature between 400 and about 500° C. for a period of at least 4 hours, by means of an oxidizing fluid comprising for the greater part an inert gas, and a lesser quantity of oxygen, under conditions such that the temperatures of the fluids feeding or leaving the heat exchanger remain below about 520° C. throughout the oxidation treatment, and in that the hot approach of the exchanger remains below about 120° C. throughout the oxidation treatment. The invention also relates to a hydrotreatment system for the implementation of this process and this device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.