Shandong Baichuan Tongchuang Energy Co.

Jinan, China

Shandong Baichuan Tongchuang Energy Co.

Jinan, China
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Guo F.,China University of Mining and Technology | Dong Y.,Shandong University | Dong Y.,Shandong Baichuan Tongchuang Energy Co. | Dong L.,Shandong Baichuan Tongchuang Energy Co. | Guo C.,China University of Mining and Technology
International Journal of Hydrogen Energy | Year: 2014

The main objective of this paper is to study the effect of design and operating parameters, mainly reactor geometry, equivalence ratio and biomass feeding rate, on the performance of the gasification process of biomass in a three air stage continuous fixed bed downdraft reactor. The gasification of corn straw was carried out in the gasifier under atmospheric pressure, using air as gasifying agent. The results demonstrated that due to the three stage of air supply, a high and uniform temperature was achieved in the oxidation and reduction zones for better tar cracking. The designing of both the air supply system and rotating grate avoided bridging and channeling. The gas composition and tar yield were affected by the parameters including equivalence ratio (ER) and biomass feeding rate. When biomass feeding rate was 7.5 kg/h and ER was 0.25-0.27, the product gas of the gasifier attained a good condition with lower heating value (LHV) about 5400 kJ/m3 and cold gas efficiency about 65%. An increase in equivalence ratio led to higher temperature which in turn resulted in lower tar yield which was only 0.52 g/Nm3 at ER = 0.32. Increasing biomass feeding rate led to higher biomass consumption rate and process temperature. However, excessively high feeding rate was unbeneficial for biomass gasification cracking and reforming reactions, which led to a decrease in H2 and CO concentrations and an increase in tar yield. When ER was 0.27, with an increase of biomass feeding rate from 5.8 kg/h to 9.3 kg/h, the lower heating value decreased from 5455.5 kJ/Nm3 to 5253.2 kJ/Nm 3 and tar yield increased from 0.82 g/Nm3 to 2.78 g/Nm3. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.


Guo F.,China University of Mining and Technology | Dong Y.,Shandong University | Fan P.,Shandong University | Lv Z.,Shandong University | And 2 more authors.
International Journal of Hydrogen Energy | Year: 2016

The kinetics of thermal decomposition of biomass tar was studied using phenol as a model compound under isothermal conditions by a two stage micro fluidized bed reactor. Calcined coal gangue and γ-Al2O3 were employed as catalyst, particularly gangue representing one type of catalyst for tar decomposition that prepared by the thermal conversion of inferior coal. The Friedman method and integral method were employed for the determination of kinetic parameters for forming H2 and CO by phenol decomposition. The results demonstrated that the activation energy for generating H2 was lower compared with CO, indicating that the reactions for forming H2 was easier in phenol decomposition. Higher activation energies for H2 and CO generating were obtained using gangue as catalyst, implying that the catalytic performance gangue was slightly lower toward phenol decomposition process due to the high content of SiO2 in gangue. © 2016 Hydrogen Energy Publications LLC.


Guo F.,China University of Mining and Technology | Dong Y.,Shandong University | Dong Y.,Shandong Baichuan Tongchuang Energy Co. | Zhang T.,Shandong University | And 3 more authors.
Industrial and Engineering Chemistry Research | Year: 2014

The gasification characteristics of herb residue for producing syngas in a pilot-scale circulating fluidized bed were investigated experimentally in this paper. The results indicated that the gas composition and tar yield were affected by the parameters including the equivalence ratio (ER), biomass feeding rate (FR), and steam-to-biomass mass ratio (S/B). The concentrations of combustible gases (H2, CO, CH4, and CnH m) showed a decreasing trend with increasing ER, while the lower heating value (LHV) exceeded 4.0 MJ/N·m3 in all cases when the ER was lower than 0.4. An increase in the ER can improve the reaction temperature, facilitate carbon conversion, and decrease the tar yield. The LHV increased gradually from 4.2 to 5.7 MJ/N·m3 with an increase in the FR from 210 to 352 kg/h. The cold gas efficiency and carbon conversion efficiency reached their maximum values of approximately 68% and 93% at a feeding rate of 352 kg/h, whereas both of them decreased with a further increase in the feeding rate. The supplement of steam into the gasifier improved the LHV of the product gas, which reached a maximum value of about 6.0 MJ/N·m3 when S/B was 0.23-0.43 and the cold gas efficiency and carbon conversion efficiency were within 62-73% and 87-94%, respectively. © 2014 American Chemical Society.


Guo F.,China University of Mining and Technology | Dong Y.,Shandong University | Dong Y.,Shandong Baichuan Tongchuang Energy Co. | Lv Z.,Shandong University | And 3 more authors.
Energy Conversion and Management | Year: 2015

Herb residue is one of the most important industrial biomass in China in terms of availability and potential for use as a bioenergy resource. The kinetics of the thermal decomposition of this fuel in an inert atmosphere was evaluated using a micro fluidized bed. The isothermal differential analysis was applied for determination of kinetic parameters for the major gas components formation including reaction order, activation energy and pre-exponential factor. The temperature inside the micro fluidized bed was steady and the pyrolysis reaction of herb residue finished in around 10 s at 600-800 °C. The reaction time for complete releasing of individual gas components was shorter at higher temperature. Experimental results showed that under the conditions studied, the values of activation energy for generating H2, CO, CO2 and CH4 were 18.90, 12.05, 10.48 and 11.31 kJ/mol respectively, corresponding to the values of pre-exponential factor in the range of 0.88-1.38 s-1. The results indicated that H2 was the most difficult to form due to the highest activation energy, while generating CO was the easiest corresponding to the lowest activation energy. Compared with TGA and other analysis approaches, the kinetic parameters obtain by the micro fluidized bed were significantly lower benefiting from its quick reaction features. ©2015 Elsevier Ltd. All rights reserved.


Guo F.,Shandong University | Dong Y.,Shandong University | Jing Y.,Shandong Baichuan Tongchuang Energy Co. | Dong L.,Shandong Baichuan Tongchuang Energy Co.
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2012

According to the tar problem in biomass gas, chemical solvent condensate trapping way was used to make tar particles in the gas condense and deposit. Tar problem could be solved mostly in this way. In the experiment, three typical solvents were comparatively analyzed, and the best solvent was chosen. Then, relationship between flow rate of the best solvent and purification performance was studied. The results show that tar removal efficiency can reach up to 90% when the flow rute of the solvent is 250 L/h, also solvent loss will be less.


Guo F.,Shandong University | Dong Y.,Shandong University | Dong L.,Shandong Baichuan Tongchuang Energy Company Ltd | Jing Y.,Shandong Baichuan Tongchuang Energy Company Ltd
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2011

By adapting gasification method, this paper conducts a gasification test on three kinds of herb residues, including Qiju Dihuang Wan, Liuwei Dihuang Wan, Xiangsha Yangwei Wan, of which the water contents were about 25 percent. Compared with corn stalk, the results showed that when the excess air coefficient was 1.1, all of the above three kinds of herb residues showed good gasification characters, with the calorific values above 5300 kJ/m3. The calorific value of Xiangsha Yangwei Wan residue was 5460 kJ/m3. Compared with corn stalk, herb residues produced more tar during the gasification process. When the excess air coefficient was 1.1, the tar content of the three herb residues was about 1000 mg/m3 and it kept decreasing with the increase of excess air coefficient. This experiment proves that these three kinds of herb residues have good gasification characters, providing a new method to the resource recovery of herb residues.


Dong Y.,Shandong University | Dong L.,Shandong University | Qiang N.,Shandong University | Jing Y.,Shandong University | Guo F.,Shandong Baichuan Tongchuang Energy Co.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2010

To settle the tar particle problem in eliminating tar from biomass gas by cyclone separator, the RSM model and DPM model were used to simulate three-dimensional strong rotating turbulent field in the cyclone separator. Contours of flow field in the cyclone separator were obtained, including dynamic pressure, turbulent kinetic energy, turbulence viscosity and velocity vector. The influence of the main factors in the cyclone separator on tar separating was analyzed. The results could provide reference for the improvement and optimization of the cyclone separator.


Guo F.,Shandong University | Dong Y.,Shandong University | Dong L.,Shandong Baichuan Tongchuang Energy Company Ltd | Jing Y.,Shandong Baichuan Tongchuang Energy Company Ltd | Yan Y.,Shandong Baichuan Tongchuang Energy Company Ltd
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2012

According to the combustion characteristics of biomass materials, a new boiler structure with three air distributions was designed, and the variation characteristics of the pollution gas emission and heat loss with the change of air distribution ratio and quantity were studied. The results showed that the mass concentration of NO x changed by changing the ratio of air distributions. When the ratio of the primary air, secondary air, and tertiary air was 7:1:2, the mass concentration of NO x got the minimum value of 83.45 mg/m 3. With the increase of excess air coefficient, the mass concentrations of SO 2 and NO x decreased gradually; the flue dust concentration increased continuously; the total heat loss of the boiler decreased first and then increased. When excess air coefficient was 1.75, the total heat loss got the minimum value of 13.8%, and the mass concentrations of SO 2, NO x and flue dust were 29.29, 83.03 and 74.90 mg/m 3 respectively. This research provides the theory basis for the combustion boiler design and operation of biomass briquette with low NO x emission.


Guo F.,Shandong University | Dong Y.,Shandong University | Dong L.,Shandong Baichuan Tongchuang Energy Co. | Jing Y.,Shandong Baichuan Tongchuang Energy Co.
Waste Management | Year: 2013

A utilization way of herb residues is designed to convert herb residues to gas fuel in industrial-scale by a circulating fluidized bed gasifier in this paper. The product gas is used in the production of Chinese medicine, and the heat of the flue gas from the boiler can be used in herb residues drying to realize the energy recycling and no herb residues discharge. The gasification characteristics of herb residues in the circulating fluidized bed of 300kg/h were investigated for about 200h. The results indicated that the gas composition and tar yield were affected by biomass flow rate, equivalence ratio (ER), moisture content and char circulating. The lower heating value of product gas was 4-5MJ/m3 using herb residues as feedstock. When mean biomass flow rate was at 5.5kgm-2s-1 and ER at 0.35, the product gas reached a good condition with lower heating value of 4.89MJ/m3 and cold gas efficiency of 62.36%. When the moisture content changed from 12.5% to 18.7%, the concentrations of H2, CO and CO2 changed from 4.66% to 6.92%, 11.23% to 10.15%, and 16.55% to 17.82% respectively, and the tar content in gas decreased from 15.1g/m3 to 14.4g/m3 when the moisture content increased from 12.5% to 15.4%. There are metal oxides in the ash of herb residues, especially CaO, MgO, K2O, Al2O3, and Fe2O3 which have obvious function on tar catalytic decomposition. The ash that attaches to the char particles can decrease the tar yield and improve the quality of gas after returning to the gasifier. © 2012 Elsevier Ltd.


Guo F.,Shandong University | Dong Y.,Shandong University | Jing Y.,Shandong Baichuan Tongchuang Energy Co. | Dong L.,Shandong Baichuan Tongchuang Energy Co.
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | Year: 2013

A 2-D model of fluidized bed was developed to study biomass particles gasification. Mass, momentum and energy conservations of gas were considered. Biomass particles pyrolysis was based on a one-stage mechanism, and species transport mechanism was developed for homogeneous and heterogeneous reactions of gas and solid. The particle motion, gasification and effects of temperature and equivalent ratio on gas composition were investigated, and the results were compared with experimental results. The results showed that the total time of the particles in gasifier was about 2.15 s, and particles fluidization became stable in 0.8 s. The mole fractions of CO2 and CH4 decreased along y axial, while CO and H2 had the opposite trend. Under different temperatures and equivalent ratios, the simulation mole fractions of H2, CO, CH4 and CO2 agreed sufficiently well with the experimental dates.

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