Use of sulfur as alternative carbon-free fuel in ammonia primary reformer combustion zone, by coupling ammonia and sulfuric acid production facilities

A process comprising an integrated system to produce ammonia coupled with sulfuric acid production, the process comprising:

• (a) providing O2 from an air separation unit to an ammonia primary reformer comprising a combustion zone;
• (b) providing air;
• (c) providing molten sulfur;
• (d) burning sulfur as fuel burn with a mixture of air and O2;
• (e) producing an SO2-rich stream exiting the ammonia primary reformer combustion zone and a waste heat recovery zone;
• (f) maintaining control of the combustion temperature of the sulfur with air and O2 by recycling cooled SO2-rich stream from the waste heat recovery zone;
• (g) utilizing the high pressure steam generated in the waste heat recovery zone to operate steam driven turbine machines;
• (h) utilizing medium pressure steam excess from the waste heat recovery zone to run a full condensation steam turbine generator;
• (i) utilizing the power generated from excess medium pressure steam to operate electrically driven motors in the ammonia plant;
• (j) transferring the SO2-rich stream to at least one sulfuric acid plant;
• (k) converting SO2 to sulfuric acid in the at least one sulfuric acid plant;
• (l) generating heat in the at least one sulfuric acid plant;
• (m) producing high pressure steam utilizing the heat generated in the at least one sulfuric acid plant;
• (n) utilizing the energy produced by the high pressure steam to run the steam turbine generator;
• (o) utilizing the power generated by the steam turbine in the air separation unit;
• (p) utilizing nitrogen in ammonia syntheses loop in the ammonia plant;
• and (q) producing low carbon ammonia;
• and (r) utilizing carbon-free power generated in the air separation unit.