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Development of high efficient process for simultaneous removal of SOx and NOx from flue gas (III)

Technical Report:

Abstract

The object of this research is to develop the simultaneous SOx and NOx removal process from flue gases using limestone and P4 additive. The research results are as follows; 1. Phosphorus oxy acids produced by reaction of P4 and O2 were PO43-, PO33-, and PO23-, and ion concentration distribution in the reactor solution was more than 50% PO43-, less than 50% of PO33- and small amount of PO23-. Total ion concentration in both a reactor and washing column was PO43- of 77%, PO33- of 12.9% and PO23- of 10.1%. The byproduct produced from the oxidation of P4 was recovered as a phosphoric acid up to 98% using one washing column. 2. The effects of L/G, pH, inlet SO{sub 2} concentration were tested by long term experiments in the mini-pilot scale system. The measured change in SO{sub 2} pickup was a linear function of the inlet SO{sub 2} concentration over the range of SO{sub 2} concentrations tested. 3. The increase of P4 concentration from 0.1 to 0.5 w/w% increased the P/NO mole ratio from 2.0 to 4.2 and consumption rate of limestone increased linearly in the mini-pilot scale system. The increase of inlet NO concentration from 270 ppm to 750 ppm  More>>
Authors:
Lee, H K; Kim, C H; Choi, I S; Kim, Y I; Min, B M; Park, S D; Choi, W K; Bak, I H; Kim, J G; Cho, H D; Lee, J S; Kim, S U; Lee, W S [1] 
  1. Korea Institute of Energy Research, Taejon (Korea, Republic of)
Publication Date:
Oct 01, 1994
Product Type:
Technical Report
Report Number:
KE-93008S
Reference Number:
SCA: 320106; PA: KR-94:000151; EDB-95:028897; SN: 95001335467
Resource Relation:
Other Information: PBD: Oct 1994
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; NITROGEN OXIDES; REMOVAL; SULFUR OXIDES; FUEL GAS; PHOSPHOROUS ACID; LIME-LIMESTONE WET SCRUBBING PROCESSES; ADDITIVES; 320106; BUILDING EQUIPMENT
OSTI ID:
10115759
Research Organizations:
No corporate text available (Country unknown/Code not available)
Country of Origin:
Korea, Republic of
Language:
Korean
Other Identifying Numbers:
Other: ON: DE95744279; TRN: KR9400151
Availability:
OSTI; NTIS (US Sales Only)
Submitting Site:
KR
Size:
191 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Lee, H K, Kim, C H, Choi, I S, Kim, Y I, Min, B M, Park, S D, Choi, W K, Bak, I H, Kim, J G, Cho, H D, Lee, J S, Kim, S U, and Lee, W S. Development of high efficient process for simultaneous removal of SOx and NOx from flue gas (III). Korea, Republic of: N. p., 1994. Web.
Lee, H K, Kim, C H, Choi, I S, Kim, Y I, Min, B M, Park, S D, Choi, W K, Bak, I H, Kim, J G, Cho, H D, Lee, J S, Kim, S U, & Lee, W S. Development of high efficient process for simultaneous removal of SOx and NOx from flue gas (III). Korea, Republic of.
Lee, H K, Kim, C H, Choi, I S, Kim, Y I, Min, B M, Park, S D, Choi, W K, Bak, I H, Kim, J G, Cho, H D, Lee, J S, Kim, S U, and Lee, W S. 1994. "Development of high efficient process for simultaneous removal of SOx and NOx from flue gas (III)." Korea, Republic of.
@misc{etde_10115759,
title = {Development of high efficient process for simultaneous removal of SOx and NOx from flue gas (III)}
author = {Lee, H K, Kim, C H, Choi, I S, Kim, Y I, Min, B M, Park, S D, Choi, W K, Bak, I H, Kim, J G, Cho, H D, Lee, J S, Kim, S U, and Lee, W S}
abstractNote = {The object of this research is to develop the simultaneous SOx and NOx removal process from flue gases using limestone and P4 additive. The research results are as follows; 1. Phosphorus oxy acids produced by reaction of P4 and O2 were PO43-, PO33-, and PO23-, and ion concentration distribution in the reactor solution was more than 50% PO43-, less than 50% of PO33- and small amount of PO23-. Total ion concentration in both a reactor and washing column was PO43- of 77%, PO33- of 12.9% and PO23- of 10.1%. The byproduct produced from the oxidation of P4 was recovered as a phosphoric acid up to 98% using one washing column. 2. The effects of L/G, pH, inlet SO{sub 2} concentration were tested by long term experiments in the mini-pilot scale system. The measured change in SO{sub 2} pickup was a linear function of the inlet SO{sub 2} concentration over the range of SO{sub 2} concentrations tested. 3. The increase of P4 concentration from 0.1 to 0.5 w/w% increased the P/NO mole ratio from 2.0 to 4.2 and consumption rate of limestone increased linearly in the mini-pilot scale system. The increase of inlet NO concentration from 270 ppm to 750 ppm decreased the P /NO ratio from 3.2 to 2.0. As the L/G ratio increased from 47.4 to 67.5, the maximum removal efficiency of NO was increased from 71.9 to 89.6%, and P/NO ratio was decreased from 3.2 to 2.2 in the mini-pilot scale system. 4. Sulfite oxidation reaction was investigated to use the byproduct in the lab-scale apparatus. When we keep the reaction order of 1.5, the rate constants were 3.19 x 10-4, and 8.95 x 10-4 when the pH were 4.5 and 9.5, respectively. The catalytic activity of Mn{sub 2}{sup +} was much higher than that of Mg{sub 2}{sup +} even though the concentration of Mn{sub 2}{sup +} was lower than Mg{sub 2}{sup +}. (author). refs., figs., tabs.}
place = {Korea, Republic of}
year = {1994}
month = {Oct}
}