Experimental Study on Mercury Removal by Combined Wet Flue Gas Desulphurization With Electrostatic Precipitator
Why this work is in the frame
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Bibliographic record
Abstract
Applying the Ontario hydro method (OHM) and the US Enviroment Protection Agency (EPA) standard methods, the flue gas mercury sampling before and after electrostatic precipitator (ESP) and wet flue gas desulphurization (WFGD) located at coal-fired power plants was carried out on site and various mercury speciations, such as Hg0, Hg2+ and HgP in flue gas, were analyzed. The solid samples, such as coal, bottom ash and ESP ash desulphurization product, were analyzed by direct mercury analyzer DMA 80. According to mercury balance, mercury speciation and its distribution in different locations downstream the flue gas were obtained. Results show that the flue gas mercury exists mainly as Hg0. The share of Hg0 is over than 80% and Hg2+ less than 20%. HgP can be removed by ESP efficiently, and partial Hg0 is oxidized to Hg2+. The total mercury removal and Hg2+ adsorption efficiency by WFGD are both zero, but more than 50% Hg2+ is reduced to Hg0. The enrichment factors are less than 1 in both bottom ash and fly ash, but it is over than 1 in desulphurization products. Mercury is exhausted in bottom ash and fly ash but enriched in desulphurization products.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it