Study on Experimental System for High Temperature Ceramic Filter

2013 ◽  
Vol 800 ◽  
pp. 149-152
Author(s):  
Yun Lei Li ◽  
Ling Bo Jiang
Keyword(s):  
High Temperature ◽  
Experimental System ◽  
Dust Control ◽  
Ceramic Filter ◽  
Coal Gas ◽  
Hot Coal Gas ◽  
On Line ◽  
Reverse Pulse ◽  
High Dust ◽  
Pulse Jet

High temperature ceramic filter is designed and implemented for purification of hot coal gas, and then an experimental system is build in order to test its filtration performance. The reverse-pulse-jet-cleaning is introduced in detail. Finally, field experiment has been carried out and the results show that the ceramic filter keeps a high dust control efficiency and long on-line stability.

scholarly journals On-line fault diagnosis model for rigid ceramic filters based on outlet concentration and dynamic pressure

2020 ◽  
Author(s):  
Longfei Liu ◽  
Zhongli Ji ◽  
Xin Luan
Keyword(s):  
Dynamic Pressure ◽  
Time Difference ◽  
Ceramic Filter ◽  
Cleaning Process ◽  
Ceramic Filters ◽  
Term Operation ◽  
Outlet Concentration ◽  
Filter Tube ◽  
On Line ◽  
Pulse Jet

Sudden fractures in rigid ceramic filter tubes hinder the stable long-term operation of advanced power-generation processes. In this study, Time difference of arrival (TDOA) of dynamic pressure in the inner wall of filter during pulse jet cleaning process and outlet concentration with diameter of leakage during filtration and pulse jet cleaning process are investigated using high frequency sensors and optical particle spectrometry. The outlet concentrations measured under different leakage agreed with the theoretical values, with the peak outlet concentration being 2.5 times greater than stable outlet concentration. There is a linear relationship between leakage aperture and theoretical outlet concentration in leaking ceramic filter tubes. A positioning model that can precisely locate the leaking ceramic filter tube using the time difference in the dynamic pressure as measured at different positions is established. This research can quickly and accurately determine whether a ceramic filter tube is broken and location of breakage.

Correlation of H2S and COS in the hot coal gas stream and its importance for high temperature desulfurization

2011 ◽  
Vol 28 (4) ◽  
pp. 1054-1057 ◽  
Author(s):  
Jianglong Yu ◽  
Liping Chang ◽  
Wei Xie ◽  
Dehai Wang
Keyword(s):  
High Temperature ◽  
Coal Gas ◽  
Hot Coal Gas

A review of sorbents for high-temperature hydrogen sulfide removal from hot coal gas

2018 ◽  
Vol 17 (1) ◽  
pp. 259-276 ◽  
Author(s):  
Dongjing Liu ◽  
Qian Wang ◽  
Jiang Wu ◽  
Yangxian Liu
Keyword(s):  
Hydrogen Sulfide ◽  
High Temperature ◽  
Coal Gas ◽  
Sulfide Removal ◽  
Hydrogen Sulfide Removal ◽  
Hot Coal Gas

High-temperature desulfurization of hot coal gas on Mo modified Mn/KIT-1 sorbents

2015 ◽  
Vol 272 ◽  
pp. 69-78 ◽  
Author(s):  
Z.F. Zhang ◽  
B.S. Liu ◽  
F. Wang ◽  
S. Zheng
Keyword(s):  
High Temperature ◽  
Coal Gas ◽  
Hot Coal Gas

scholarly journals Performance of ZnMn2O4/SiO2 sorbent for high temperature H2S removal from hot coal gas

RSC Advances ◽  
2017 ◽  
Vol 7 (57) ◽  
pp. 35795-35804 ◽  
Author(s):  
Tzu-Hsing Ko ◽  
Shumao Wang ◽  
Feng-Hsiang Chang ◽  
Chen-Yao Chu
Keyword(s):  
High Temperature ◽  
Impregnation Method ◽  
Wet Impregnation ◽  
H2s Removal ◽  
Coal Gas ◽  
Hot Coal Gas ◽  
Wet Impregnation Method

A spinel ZnMn2O4 sorbent supported on SiO2 was fabricated using a wet impregnation method for high temperature desulfurization.

Development of a Ceramic Particulate Trap for Urban Buses

1989 ◽  
Vol 111 (3) ◽  
pp. 398-403 ◽  
Author(s):  
G. M. Cornetti ◽  
P. P. Messori ◽  
C. Operti
Keyword(s):  
Pressure Loss ◽  
Control Unit ◽  
Ceramic Filter ◽  
Physical Parameters ◽  
Ceramic Particulate ◽  
On Line ◽  
Urban Bus ◽  
The City ◽  
Complete Regeneration ◽  
Fuel Burner

Main aspects concerning the development of a burner-assisted ceramic particulate trap for diesel engines equipping urban buses have been examined. First of all the basic phenomena causing particulate accumulation inside the filter and chemical and physical parameters controlling regeneration have been studied. Then systematic measurements were performed in different running conditions on an urban bus equipped with a ceramic filter using a diesel fuel burner to start regeneration in order to verify the theoretical approach. These tests showed that: (1) The amount of particulate collected by the trap is a function of the different flat and/or hilly circuits inside the city; (2) regeneration has to be started with a proper amount of particulate collected (too little does not allow complete regeneration, too much is dangerous for trap life). Therefore an on-line continuous monitoring system of the particulate collected has been developed. When a certain level is exceeded, the filter is bypassed and regeneration starts. The system is based on the direct measurement of the exhaust flow by means of a Venturi and the pressure loss on the trap. The amount of particulate is defined by real time comparison of Venturi differential pressure and filter pressure loss. Urban buses were purposely designed in order to be equipped with a ceramic particulate trap plus the control unit. Tests of the system have been successfully performed on the buses operated on flat and hilly circuits inside the city.

scholarly journals Effect of cobalt (nickel) oxide on the properties of zinc–titanium sorbents for high temperature desulphurization of model coal gas

2021 ◽  
Author(s):  
M. Chomiak ◽  
J. Trawczyński ◽  
M. Zawadzki
Keyword(s):  
High Temperature ◽  
Sorption Capacity ◽  
Catalytic Effect ◽  
Mixed Oxides ◽  
Mixed Metal Oxides ◽  
Coal Gas ◽  
Cobalt Nickel ◽  
Texture Structure ◽  
Cobalt Nickel Oxide ◽  
Co Doped

AbstractZn–Ti–Co(Ni) sorbents for H2S removal from model hot coal were prepared and characterized. Effects of cobalt (Co) and nickel (Ni) on the sorbents texture, structure, H2S sorption capacity and regeneration properties were determined. TiO2 formed mixed metal oxides with CoO and NiO in the fresh sorbents, while TiO2 and nanocrystalline sulfides of Zn, Co, Ni were found in sulphided ones. The oxidative regeneration of sulphided sorbents re-formed mixed oxides. Sorption capacity of studied materials increased along with an increase of the amount of added Co (Ni) and also with the number of work cycles. Co-doped Zn–Ti materials adsorbed up to 244% more sulfur than these of Zn–Ti, while Ni-doped materials adsorbed ca. twice more H2S than the corresponding Co-doped sorbents. The addition of Co (Ni) decreased the temperature of ZnS oxidation. The catalytic effect of the Co (Ni) oxides on the oxidation of ZnS was suggested.

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