POWER GENERATION FROM WASTE HEAT IN INTEGRATED CRUDE OIL DIESEL HYDROTREATING AND AROMATICS FACILITIES

摘要

A power generation system includes two heating fluid circuits coupled to multiple heat sources from multiple sub-units of a petrochemical refining system. The sub-units include an integrated diesel hydro-treating plant and aromatics plant. A first subset and a second subset of the heat sources includes diesel hydro-treating plant heat exchangers coupled to streams in the diesel hydro-treating plant and aromatics plant heat exchangers coupled to streams in the aromatics plant, respectively. A power generation system includes an organic Rankine cycle (ORC) including a working fluid that is thermally coupled to the two heating fluid circuits to heat the working fluid, and an expander to generate electrical power from the heated working fluid. The system includes a control system to activate a set of control valves to selectively thermally couple each heating fluid circuit to at least a portion of the heat sources.

主权项

1. A power generation system comprising:
a first heating fluid circuit thermally coupled to a plurality of heat sources from a plurality of sub-units of a petrochemical refining system; a second heating fluid circuit thermally coupled to the plurality of heat sources from the plurality of sub-units of the petrochemical refining system, wherein the plurality of sub-units comprises a diesel hydro-treating plant and an aromatics plant,
wherein a first subset of the plurality of heat sources comprises a plurality of diesel hydro-treating plant heat exchangers coupled to streams in the diesel hydro-treating plant,wherein a second subset of the plurality of heat sources comprises a plurality of aromatics plant heat exchangers coupled to streams in the aromatics plant; a power generation system that comprises an organic Rankine cycle (ORC), the ORC comprising (i) a working fluid that is thermally coupled to the first heating fluid circuit and the second heating fluid circuit to heat the working fluid, and (ii) an expander configured to generate electrical power from the heated working fluid; and a control system configured to activate a set of control valves to selectively thermally couple each of the first heating fluid circuit and the second heating fluid circuit to at least a portion of the plurality of heat sources.