Patent · US Active

Method for scrubbing exhaust gas from CO2 and/or SOx

US11642625B2 · kind B2 · utility

0Cited by

3References

23Claims

0Family size

Assignee

HCONNECT 2 GMBH · DE

Inventors

Jan SKOCEK · Leimen, DE
Maciej ZAJAC · Heidelberg, DE
Mohsen BEN HAHA · Heidelberg, DE
Stefan Federhen · Frankfurt, DE

Key dates

Filing date	Jun 4, 2020
Grant date	May 9, 2023
Priority date	—
Expiry date	Sep 25, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/91
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method of exhaust gas scrubbing includes providing recycled concrete fines as a waste material rich in carbonatable Ca and/or Mg phases and with d90≤1000 μm and a Rosin-Rammler slope n from 0.6 to 1.4 , injecting the waste material into an exhaust gas stream containing CO2 and/or SOx for reaction with CO2 and/or SOx at a relative humidity of 50 to 100 Vol.-% and a temperature from 40 to 130° C. in an amount of dry waste material ranging from 5 to 30 kg/m3, withdrawing a partly carbonated and/or sulphurized waste material and purified exhaust gas, and recycling a part of the partly carbonated and sulphurized waste material while the remainder is discharged, as well as use of a waste material slurry for exhaust gas cleaning of CO2 and/or SOx.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.