Dissemination and fostering of plasma based environmental technological innovation

Transcription

1 Dissemination and fostering of plasma based environmental technological innovation Work Package 5: "Removal of organic compounds and aerosols from gases" Dr. Ronny Brandenburg, INP Greifswald

2 Aims of work package 5 Plasma technologies for the removal of hydrocarbons, aerosols and other hazardous compounds in exhaust gases Raising the interest of potential industrial stakeholders supported by the development of modular mobile evaluation models for demonstration Creation of a compendium on existing and future plasma technology applications Applied studies on near-industrial, small and medium scale installations and novel plasma assisted catalytic processes on small scale WP 5 "Removal of organic compounds / aerosols" 1

3 Introduction Removal of VOCs in air by means of plasmas Plasma generation by means of gas discharges (e.g., barrier discharge) or electron beam injection Oxidative reactions by radicals formed in the plasma Plasma as oxidation stages in combination with other processes like adsorption, catalysis, scrubbing Air in Ionisation Oxidizing reactions Further processing WP 5 "Removal of organic compounds / aerosols" 2

4 Implementation Raising the interest of potential stakeholders Organization and contributions on workshops, summer schools etc. Participation in German standardization committee Compendium on existing and future plasma technology applications Compendium published as an open access book chapter; handbook Set-up of a PlasTEP-standard and methodology for comparing studies Applied studies on small and medium scale Development of (mobile) prototypes; different approaches considered (catalyst) Field tests on water plant and farm Study of plasma-catalyst/adsorber combinations for improved processes WP 5 "Removal of organic compounds / aerosols" 3

5 Main results of work package 5 Dissemination Organization of three international workshops Participation in four summer schools, seven workshops, two fairs Contribution in the VDI/DIN-comission Reinhaltung der Luft Work group Non-thermal plasma treatment Active membership in standardization committee Compendium about plasma based gas treatment Published in Monitoring, Control and Effects of Air Pollution Edited by: Andrzej G. Chmielewski, ISBN InTech; August 2011 WP 5 "Removal of organic compounds / aerosols" 4

6 Main results of work package 5 Mobile test device for field tests Barrier discharge stack reactor design Easy scalable and low back pressure Implementation of catalytic surfaces/adsorbing agents High voltage power supply from partners in Szcecin Higher energetic efficiency than state-of-the-art technology Plasma process on-line controllable by power supply Implementation of gas analysis FTIR (ppm-sensitivity, multi-component gases) FID (Total hydrocarbons, industrial standard) WP 5 "Removal of organic compounds / aerosols" 5

7 Main results of work package 5 Additional approaches Removal of undecane by combination plasma+zeolites (WP6) Falling water plasma reactor Combination of plasma oxidation and scrubbing process Electron beam treatment of VOCs (INCT) Removal of toluene, benzene and chlortoluene demonstrated; see Y. Sun and A. G. Chmielewski in "Organic Pollutants Ten Years After the Stockholm Convention - Environmental and Analytical Update", InTecc 2012, ISBN WP 5 "Removal of organic compounds / aerosols" 6

8 Main results of work package 5 Catalyst incorporation Improved toluene removal by DBD and catalyst-coated microporous dielectric - Atomic layer deposition (ASTRaL) of titanium dioxide, coverage of internal surfaces of microporous dielectric Removal of ethyl acetate and propylene by DBD+TiO 2 (U Tartu) Electron beam treatment of VOC-contaminated gases (INCT) Removal of toluene supported by classical TiO 2 /gal 2 O 3 catalyst see: H. Nichipor et al., Radiation Physics and Chemistry, 81(5), 2012, Catalyst prepared by plasma spraying (LEI) WP 5 "Removal of organic compounds / aerosols" 7

9 Main results of work package 5 Field test Focus on water treatment plants Application of plasma-catalytic (copper-manganese) unit (Envisolve, GER) for waste air deodorization of thermal sludge dryer emissions combined with scrubber and/or existing biofilter Analysis of main plasma-chemical effects by FTIR, FID, chemical sensors and GC/MS screening; olfactometry Exhaust air containing hydrogen sulfide, methane, aldehydes, sulfur containing substances (COS, DMS, CS 2, DMDS) Aim: to carry out a reliable concept for an industrial after-treatment installation WP 5 "Removal of organic compounds / aerosols" 8

10 Main results of work package Field test Focus on water treatment plants Significant reduction of H 2 S and CH 4 by plasma treatment, formation of unwanted byproducts (SO 2 ) Significant odor reduction up to about 90 % Aldehydes / HCs moderately removed by plasma biofilter removes aldehydes completely, but releases sulfur containing substances, which can be destroyed by plasma/catalytic treatment Final concept Due to high content of H 2 S a scrubber with downstream plasma/catalytic unit and existing biofilter WP 5 "Removal of organic compounds / aerosols" 9

11 Main results of work package Field test Focus on farms Test of plasma treatment (mobile device) combinable with adsorbing agents or catalyst in the exhaust of poultry farm/henhouse For plasma power of 50 W (180 J/L) no detectable henhouse odors sensed Hexadecanoic (palmitic) acid CH 3 (CH 2 ) 14 CO 2 H reduced by plasma Most important by-product (beside CO 2 and O 3 ): Aceton C 3 H 6 O Next field tests: oil-shale industry WP 5 "Removal of organic compounds / aerosols" 10

12 Thank you for your attention and for the contributions of WP partners! M. Holub M. Balcerak D. Cameron M.-L. Kääriäinen T. Ivanova I, Jõgi M. Laan V. Valincius R. Kėzelis T. Hoder M. Schmidt H. Grosch W. Reich A.G. Chmielewski A. Pawelec Y. Sun S. Vasarevicius H. Barankova L. Bardos E. Stamate M. Dors J. Mizeraczyk WP 5 "Removal of organic compounds / aerosols" 11