HCl removal using cycled carbide slag from calcium looping cycles

Xie, Xin; Li, Yingjie; Wang, Wenjing; Shi, Lei

doi:10.1016/j.apenergy.2014.08.098

Cited by 40 publications

(17 citation statements)

References 46 publications

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“…Our previous paper reported that the optimum temperature for HCl removal by the carbide slag undergone various carbonation/ calcination cycles was 700°C [36]. As depicted in Fig.…”

Section: Effect Of Chlorination Temperature On Hcl Absorption By Cyclmentioning

confidence: 96%

“…However, the product of the reaction between CaO and HCl was reported to be CaClOH [36,[42][43][44]. Moreover, some researchers pointed out that a variety of intermediates (CaClOH and CaCl 2 ·2H 2 O) and end products (CaCl 2 ) were formed in the absorption process of HCl [45] and the reaction product depended on the chlorination reaction time [46].…”

Section: Xrd Analysis Of Chlorinated Synthetic Sorbent From Calcium Lmentioning

confidence: 96%

“…The volume of pores in the entire measured pore size range for the CaO/Ca 3 Al 2 O 6 sorbent is higher than that for the carbide slag after the same cycles. The pores in the range of 2-10 nm may be an important area for HCl absorption by CaO derived from the carbide slag [36] (the size of HCl molecule is about 0.4 nm). For the CaO/Ca 3 Al 2 O 6 sorbent, the volume of pores in the entire measured pore size range after 5 cycles is higher than that after 0 cycle.…”

Section: Microstructure Analysismentioning

confidence: 99%

“…Wang et al [35] found that the presence of HCl sharply decreased CO 2 capture capacity of calcium-based sorbent after a dozen CO 2 capture cycles using the calcium looping in the simultaneous CO 2 /HCl capture process. Therefore, in order to avoid the adverse effect of HCl on CO 2 capture of the sorbent in the multiple cycles, we have proposed that the carbide slag discharged from CO 2 capture cycles using the calcium looping could be used to remove HCl from the flue gases of biomass-fired and RDFs-fired boilers in our previous research [36]. And then CO 2 and HCl can be sequentially captured by the carbide slag, as shown in Fig.…”

Section: Introductionmentioning

confidence: 98%

“…Not only the spent carbide slag discharged from the CO 2 capture cycles will be reused, but also the cost for HCl removal will be reduced. The HCl absorption capacity (HCl uptake by per unit mass sorbent, g HCl/g sorbent) of the carbide slag after 1 and 50 carbonation/ calcination cycles were 0.18 and 0.05 g/g in the previous research [36], respectively.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

HCl absorption by CaO/Ca 3 Al 2 O 6 sorbent from CO 2 capture cycles using calcium looping

Xie

Liu

et al. 2015

Fuel Processing Technology

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“…Our previous paper reported that the optimum temperature for HCl removal by the carbide slag undergone various carbonation/ calcination cycles was 700°C [36]. As depicted in Fig.…”

Section: Effect Of Chlorination Temperature On Hcl Absorption By Cyclmentioning

confidence: 96%

Section: Xrd Analysis Of Chlorinated Synthetic Sorbent From Calcium Lmentioning

confidence: 96%

Section: Microstructure Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

HCl absorption by CaO/Ca 3 Al 2 O 6 sorbent from CO 2 capture cycles using calcium looping

Xie

Liu

et al. 2015

Fuel Processing Technology

Self Cite

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Sodium, zinc and magnesium chlorides as additives for soybean hulls pyrolysis

Santana

Sousa

Cardoso

et al. 2016

J Therm Anal Calorim

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Thermogravimetric analysis and analytical pyrolysis were used to investigate the decomposition of pure soybean hulls and hulls impregnated with metal chlorides (NaCl, ZnCl 2 and MgCl 2 ). Each additive was studied at contents of 10, 20 and 30 % in mass concentration. Thermogravimetric analyses were performed at different heating rates (5, 10, 15, 20 and 25°C min -1 ) under inert nitrogen atmosphere. Analytical pyrolysis experiments were carried out at 550 and 650°C, and the pyrolysis products were analyzed by gas chromatography and mass spectrometry. The mass loss and derivative mass loss curves of soybean hulls impregnated with salts showed a decrease in the decomposition temperature and reduction in maximum degradation rate for the samples containing ZnCl 2 and MgCl 2 . The samples impregnated with NaCl showed an increase in the decomposition temperature and reductions in the maximum degradation rate. Considering analytical pyrolysis results, samples with MgCl 2 and ZnCl 2 presented increases in aldehydes and reductions in acid and ester contents. The addition of NaCl did not present an important effect on pyrolysis products from soybean hulls. The study concerning the thermal decomposition of soybean hulls to which metal chlorides were added is not registered in previous works. Results indicated that the addition of ZnCl 2 and MgCl 2 reduced the thermal degradation temperatures and that the studied mixtures can be used as sustainable raw materials for the production platform of fuels and value-added chemicals.

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A review of hydrogen chloride removal from calcium- and sodium-based sorbents

Wang

Chen

et al. 2023

Environ Sci Pollut Res

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HCl removal using cycled carbide slag from calcium looping cycles

Cited by 40 publications

References 46 publications

HCl absorption by CaO/Ca 3 Al 2 O 6 sorbent from CO 2 capture cycles using calcium looping

HCl absorption by CaO/Ca 3 Al 2 O 6 sorbent from CO 2 capture cycles using calcium looping

Sodium, zinc and magnesium chlorides as additives for soybean hulls pyrolysis

A review of hydrogen chloride removal from calcium- and sodium-based sorbents

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