Adsorption and desorption of sulfur dioxide on novel adsorbents for flue gas desulfurization. Final report, September 1, 1993--August 31, 1994

Adsorption and desorption of sulfur dioxide on novel adsorbents for flue gas desulfurization. Final report, September 1, 1994--February 29, 1996

“…But the granular sorbents have a larger SO2 sorption capacity and faster sulfation rate as compared with the powder sorbents studied in our previous work (Deng and Lin, 1995a). This is because the granular sorbent tested in this work has a higher CuO loading and larger BET surface area than those of the powder sorbents studied in our previous work and described in our previous report &in and Deng, 1994). Fig.…”

“…Since stability of the sol would be disturbed if aqueous cupric chloride solution was mixed with boehmite sol as observed in our previous study &in and Deng, 1994), it was difticult to coat CuO on the y-alumina using cupric chloride as copper source by this in situ impregnation method.…”

“…In year four (1993)(1994) of this project a sol-gel method was developed in our laboratory to prepare y-alumina supported copper oxide sorbents in powder form as described in our previous OCDO report &in and Deng, 1994). These sorbents have been shown to have desirable pore texture, high monolayer loading of active species (CuO), large SO2 sorption capacity and good thermal and chemical stability Lin, 1996, 1995a).…”

“…The dealuminated Y (DAY) zeolite, a hydrophobic zeolite sorbent recently commercialized by Degussa AG, was also studied in year four &in and Deng, 1994) for its SO2 adsorption and diffusion properties, and thermal, hydrothermal and chemical stability. The results obtained in our laboratory @eng and Lh, 1995b) have demonstrated that the DAY zeolite have a much larger surface area (712 m2/g) than that of y-Al203 supports (350 m2/g).…”

“…Sulfation, regeneration and oxidation properties on the sol-gel derived alumina powder supported CuO sorbents were systematically investigated in our previous works and presented in previous report &in and Deng, 1994) and publications @eng and L q 1996, 1995a). This section will only present the major results obtained on the CuO sorbent granules and compare them with the results on powder sorbents.…”