Hefei Tianyan Green Energy Development Co.

Hefei, China

Hefei Tianyan Green Energy Development Co.

Hefei, China

Time filter

Source Type

Qiu S.,Anhui University of Science and Technology | Xu Y.,Anhui University of Science and Technology | Ye T.,Anhui University of Science and Technology | Yamamoto M.,University of Tokyo | And 2 more authors.
Energy Sources, Part A: Recovery, Utilization and Environmental Effects | Year: 2014

Efficient production of clean biofuels using CO2-rich bio-oil-based syngas obtained from bio-oil steam reforming was performed over a Fe1.5Cu1Zn1Al1K0.117 catalyst. The effects of synthesis parameters (temperature, pressure, gas hourly space velocity) on the performance of the biofuel synthesis were investigated. The maximum biofuel yield reaches about 0.63 kg biofuels/(kg cata·h) with a contribution of 0.40 kg alcohols/(kg cata·h) and 0.23 kg liquid hydrocarbons/(kg cata·h). The content of C2 + alcohols (mainly C2-C6 alcohols) in the alcohols products is 87.04-91.15 wt%. Some important elementary steps involved in the biofuel synthesis, including the reverse water-gas shift reaction and methanation, were also investigated in detail. © Taylor & Francis.


Qiu S.-B.,Anhui University of Science and Technology | Xu Y.,Anhui University of Science and Technology | Ye T.-Q.,Anhui University of Science and Technology | Gong F.-Y.,Anhui University of Science and Technology | And 4 more authors.
Chinese Journal of Chemical Physics | Year: 2011

Highly efficient synthesis of clean biofuels using the bio-syngas obtained from biomass gasification was performed over Fe 1.5Cu 1Zn 1Al 1K 0.117 catalyst. The maximum biofuel yield from the bio-syngas reaches about 1.59 kg biofuels/(kg catalh) with a contribution of 0.57 kg alcohols/(kg catalh) and 1.02 kg liquid hydrocarbons/(kg catalh). The alcohol products in the resulting biofuels were dominated by the C2 + alcohols (mainly C2 - C6 alcohols) with a content of 73.55%-89.98%. The selectivity of the liquid hydrocarbons (C5 +) in the hydrocarbon products ranges from 60.37% to 70.94%. The synthesis biofuels also possess a higher heat value of 40.53-41.49 MJ/kg. The effects of the synthesis conditions, including temperature, pressure, and gas hourly space velocity, on the biofuel synthesis were investigated in detail. The catalyst features were characterized by inductively coupled plasma and atomic emission spectroscopy, X-ray diffraction, temperature programmed reduction, and the N 2 adsorption-desorption isotherms measurements. The present biofuel synthesis with a higher biofuel yield and a higher selectivity of liquid hydrocarbons and C2 + alcohols may be a potentially useful route to produce clean biofuels and chemicals from biomass. © 2011 Chinese Physical Society.


Xu Y.,Anhui University of Science and Technology | Ye T.-Q.,Anhui University of Science and Technology | Qiu S.-B.,Anhui University of Science and Technology | Ning S.,Anhui University of Science and Technology | And 3 more authors.
Bioresource Technology | Year: 2011

A novel approach for high efficient conversion of the CO 2-rich bio-syngas into the CO-rich bio-syngas was carried out by using biomass char and Ni/Al 2O 3 catalyst, which was successfully applied for production of bio-methanol from bio-oil. After the bio-syngas conditioning, the CO 2/CO ratio prominently dropped from 6.33 to 0.01-0.28. The maximum CO yield in the bio-syngas conditioning process reached about 1.96mol/(mol CO 2) with a nearly complete conversion of CO 2 (99.5%). The performance of bio-methanol synthesis was significantly improved via the conditioned bio-syngas, giving a maximum methanol yield of 1.32kg/(kg catalysth) with a methanol selectivity of 99%. Main reaction paths involved in the bio-syngas conditioning process have been investigated in detail by using different model mixture gases and different carbon sources. © 2011 Elsevier Ltd.


Ye T.-Q.,Anhui University of Science and Technology | Yan S.-Z.,Anhui University of Science and Technology | Xu Y.,Anhui University of Science and Technology | Qiu S.-B.,Anhui University of Science and Technology | And 2 more authors.
Chinese Journal of Chemical Physics | Year: 2011

A dual-reactor, assembled with the on-line syngas conditioning and methanol synthesis, was successfully applied for high efficient conversion of rich CO 2 bio-oil derived syngas to bio-methanol. In the forepart catalyst bed reactor, the catalytic conversion can effectively adjust the rich-CO 2 crude bio-syngas into the CO-containing bio-syngas using the CuZnAlZr catalyst. After the on-line syngas conditioning at 450 °C, the CO 2/CO ratio in the bio-syngas significantly decreased from 6.3 to 1.2. In the rearward catalyst bed reactor, the conversion of the conditioned bio-syngas to bio-methanol shows the maximum yield about 1.21 kg/(kg catalh) MeOH with a methanol selectivity of 97.9% at 260 °C and 5.05 MPa using conventional CuZnAl catalyst, which is close to the level typically obtained in the conventional methanol synthesis process using natural gas. The influences of temperature, pressure and space velocity on the bio-methanol synthesis were also investigated in detail. © 2011 Chinese Physical Society.


Ning W.-S.,Zhejiang University of Technology | Zhang W.,Zhejiang University of Technology | Jin Y.-F.,Zhejiang University of Technology | Chen F.,Hefei Tianyan Green Energy Development Co. | And 2 more authors.
Xiandai Huagong/Modern Chemical Industry | Year: 2013

Fe/CuZnSi catalysts are prepared by precipitation-impregnation method. CuZnSi precursor is obtained by precipitation reaction of the solution of Cu and Zn nitrates with K2SiO3 solution. FeZn2Cu3O6.5 crystal is observed after CuZnSi precursor is impregnated in Fe(NO3)3 solution. FeZn2Cu3O6.5 crystal is decomposed into CuO during the calcination at 400°C. It is helpful to bring forth well contacting between Cu and Fe and is beneficial to increase the reactivity of CO hydrogenation on Fe/CuZnSi catalysts. CO conversion is mainly dependent on Fe content in the catalysts. The distribution of liquid products is influenced by the ratio of Cu and Zn in the catalysts. For the catalyst having equal mass of Cu and Zn, the mass of produced alcohols is more than about two-fold of the hydrocarbons and the content of C2 + alcohols is about half of the total alcohols.


Ye T.-Q.,Anhui University of Science and Technology | Zhang Z.-X.,Anhui University of Science and Technology | Xu Y.,Anhui University of Science and Technology | Yan S.-Z.,Anhui University of Science and Technology | And 3 more authors.
Wuli Huaxue Xuebao/ Acta Physico - Chimica Sinica | Year: 2011

Na-promoted CuCoMn catalysts were successfully applied to the highly efficient production of higher alcohols from bio-syngas, which was derived from biomass gasification. The influence of Na content and synthesis conditions (temperature, pressure, and gas hourly space velocity (GHSV)) on higher alcohol synthesis was investigated. The CuCoMnNa0.1 catalyst gave the best performance for higher alcohol synthesis. Carbon conversion increased significantly with an increase in temperature at lower than 300 °C but alcohol selectivity showed an opposite trend. A higher pressure was found to be beneficial for higher alcohol synthesis. Increasing the GHSV reduced carbon conversion but increased the yield of higher alcohols. The maximum higher alcohol yield that was derived from bio-syngas was 304.6 g·kg-1·h-1 with the C2+ alcohols (C2-C6 higher alcohols) of 64.4% (w, mass fraction) under the conditions used. The distributions of the alcohols and the hydrocarbons were consistent with Anderson-Schulz-Flory (ASF) plots. Adding Na to the CuCoMn catalysts led to an increase in the selectivity toward the higher alcohols and promoted the dispersion of the active elements, copper and cobalt. X-ray photoelectron spectroscopy (XPS) results suggested that Cu was present as a mixture of Cu+ and Cu0 on the catalyst′s surface after use and Co was present as a mixture of Co2 +/Co3 + and Co0. With an increase in sodium addition the Cu0/Cu+ ratio and the Co0 intensity both decreased. © Editorial office of Acta Physico·Chimica Sinica.


Sun K.,Key and Open Laboratory of Forest Chemical Engineering | Sun K.,Beijing Institute of Technology | Chen C.,Key and Open Laboratory of Forest Chemical Engineering | Chen C.,Beijing Institute of Technology | And 6 more authors.
Chemistry and Industry of Forest Products | Year: 2014

In order to solve the problems in biomass briquette combustion including low efficiency, exhausting gas and smoke, slagging easily and difficulty to remove, we designed a new type of combustion machine which adopt staged combustion mode. The steam boiler heating experiments were conducted and the results showed that the output of boiler was 5 300 MJ and combustion efficiency was 99.36%. The combustion gas contained CO with 0.001 45% and the contents of SO2 and NOX were 0.01% and 0.06%, respectively. Slag could be automatically broken and slagging-off under the help of automatic slag broken & clean device. ©, 2014, Editorial Board of "Chemistry and Industry of Forest Products". All right reserved.

Loading Hefei Tianyan Green Energy Development Co. collaborators
Loading Hefei Tianyan Green Energy Development Co. collaborators