Control of combustion system emissions
US10718515B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2016 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Nov 2, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23J2215/60
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process for capturing undesirable combustion products produced in a high temperature combustion system in which a carbonaceous fuel is utilized. Very finely sized particles of alkaline earth carbonates or hydroxides, with or without added ground ash, are provided in slurry form, are dried and milled to provide unagglomerated, sub-micron-sized particles that are injected along with pulverized coal and an oxidizing agent into the high temperature combustion zone of a furnace. The particles capture and neutralize the gases that result in condensable acids, including SOx, NOx, HCL, and HF, as well as capturing toxic metals that are present in the combustion products, they mitigate ash fouling and slagging, and they facilitate economic heat exchange that permits fuel savings and recovery of water for use in other processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.