Experimental evaluation of hydrogen chloride (HCl) absorption by cement raw meals at low temperatures, using fixed-bed tests

2019 ◽  
Vol 7 (2) ◽  
pp. 102959
Author(s):  
Stylianos Pachitsas ◽  
Stig Wedel ◽  
Lars Skaarup Jensen ◽  
Jytte Boll Illerup ◽  
Kim Dam-Johansen
Keyword(s):  
Hydrogen Chloride ◽  
Low Temperatures ◽  
Experimental Evaluation ◽  
Fixed Bed

Reaction of Hydrogen Chloride Gas with Sodium Carbonate and Its Deep Removal in a Fixed-Bed Reactor

2014 ◽  
Vol 53 (49) ◽  
pp. 19145-19158 ◽  
Author(s):  
Miloslav Hartman ◽  
Karel Svoboda ◽  
Michael Pohořelý ◽  
Michal Šyc ◽  
Siarhei Skoblia ◽  
...  
Keyword(s):  
Hydrogen Chloride ◽  
Sodium Carbonate ◽  
Fixed Bed ◽  
Fixed Bed Reactor

Hydrogen Chloride Release From Combustion of Corn Straw in a Fixed Bed

2017 ◽  
Vol 140 (5) ◽  
Author(s):  
Xiaohan Ren ◽  
Xiaoxiao Meng ◽  
Aidin Panahi ◽  
Emad Rokni ◽  
Rui Sun ◽  
...  
Keyword(s):  
Hydrogen Chloride ◽  
Flow Rate ◽  
Air Flow ◽  
Fixed Bed ◽  
Air Flow Rate ◽  
Corn Straw ◽  
Release Rates ◽  
Torrefied Biomass ◽  
Hcl Gas ◽  
Biomass Ashes

Chlorine plays an important role in the slagging and corrosion of boilers that burn high-chlorine content biomass. This research investigated the emissions of hydrogen chloride (HCl) gas from combustion of biomass in a fixed bed, as functions of the mass air flow rate through the bed and of the moisture content of the fuel. The biomass burned was corn straw, either raw or torrefied. Results showed that increasing the air flow rate through the bed increased the release of HCl gas, as a result of enhanced combustion intensity and associated enhanced heat release rates. When the airflow through the bed was increased by a factor of six, the amount of fuel-bound chlorine converted to HCl nearly tripled. Upon completion of combustion, most of the chlorine remained in the biomass ashes, with the exception of the highest air flow case where the fraction of chlorine released in HCl equaled that captured in the ashes. HCl emissions from torrefied biomass were found to be lower than those from raw biomass. Finally, drying the biomass proved to be beneficial in drastically curtailing the generation of HCl gas.

Das System Pyridin-Chlorwasserstoff: Bildung und Struktur kristalliner Addukte / The System Pyridine-Hydrogen Chloride: Formation and Structure of Crystalline Adducts

1989 ◽  
Vol 44 (10) ◽  
pp. 1239-1246 ◽  
Author(s):  
Dietrich Mootz ◽  
Jörg Hocken
Keyword(s):  
Hydrogen Chloride ◽  
Low Temperatures ◽  
Room Temperature ◽  
Crystal Structure Analysis ◽  
Chloride Ions ◽  
Temperature Phase ◽  
Phase 2 ◽  
Melting Diagram ◽  
Structural Units ◽  
Solid Complexes

The melting diagram of the system pyridine-hydrogen chloride was determined by DTA. It reveals the existence of intermediary solid complexes pyridine · xHCl with x = 0.5, 1, 2, 4 and 6. The structures of those with x = 1 (room-temperature phase), 2, 4 and 6 were determined from single-crystal MoKa diffractometer data at low temperatures. Pyridinium and chloride ions and, with the exception of the mono-adduct, hydrogen chloride molecules are hydrogen-bonded into various discrete molecular and complex-ionic structural units. Among these are the first poly-(hydrogen chloride) anions, HnCln+1- or [Cl(HCl)n]- with n > 1 (viz. n = 2, 4 and 5), characterized by crystal structure analysis.

The Adsorption and Desorption Breakthrough Behavior of Hydrogen Chloride Gas Mixture on Zeolite 13X Pellet in a Fixed Bed Reactor

2015 ◽  
Vol 48 (3) ◽  
pp. 202-211 ◽  
Author(s):  
Jae-Young Kim ◽  
Dae-Hyun Kyung ◽  
Young Cheol Park ◽  
Sung-Ho Jo ◽  
Ho-Jung Ryu ◽  
...  
Keyword(s):  
Hydrogen Chloride ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Gas Mixture ◽  
Adsorption And Desorption ◽  
Zeolite 13X
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