Kittiphop Promdee

Synthesis of char, bio-oil and gases using a screw feeder pyrolysis reactor

In this study, char, bio-oil and gases were synthesized with a continuous pyrolysis process from residual plants consisting of Cogongrass and Manilagrass at temperatures in the range of 400–550°C, with a feed rate of 150, 350, and 550 rpm (r min−1). The product yield calculation showed that the liquid yield was highest at 53.56%, at 350 rpm. After separation of the bio-oil from liquid phase, the bio-oil was found to have components of approximately 33.38%, of which the solid yield (char) was highest at 27.35%, at 350 rpm, and the gas yield was highest at 43.60%, at 150 rpm. This indicates that biomass from residual plants materials produced good yields because of low solid and gas yields while having high liquid yield.

Comparative Study of Some Physical and Chemical Properties of Bio-Oil from Manila Grass and Water Hyacinth Transformed by Pyrolysis Process

The analyses of the physical and chemical properties of bio-oil by pyrolysis, which takes place at temperatures in the range of 450-600°C, were to compare the quality of bio-oil extracted from different weeds that is, 1) Manila grass (Zoysia Matrella (L.) Merr) (MG) and 2) Water hyacinth (Eichhornia crassipes (Mart.) Solms) (WH). The preliminary analyses of biomass by proximate analysis. The results showed that biomass extracted from both weeds had good qualities because of low moisture content and high fixed carbon. MG found carbon content of 30.77%. While WH was 29.70%. The analysis of bio-oil can found the heating values of bio-oil from MG were difference from bio-oil obtained from WH, both held that there was in the Heating Value of high-level or better standards, especially bio-oil obtained from the MG have a heating value of about 32 MJ/Kg (at 500 °C). The content of sulfur quantity are found that bio-oil from the MG have lowest a sulfur quantity 0.26 wt.% at 400 oC; similarly; bio-oil from the WH have lowest a sulfur quantity 0.27 wt.% at 400 oC. The amount of carbon in the bio-oil obtained from MG and bio-oil obtained from WH was 55.57 wt.% and 55.03 wt.%, respectively., carbon was relatively high in both weeds. Hence; In this research are concerns the feeding rate, the control gas flow, the temperatures in reactor and reactor operate. MG and WH can produce hi quality of bio-oil and two weeds of resist in Thailand can be also used to generate the other fuel energy in the future.

Bio-oil synthesis by pyrolysis of cogongrass ( Imperata Cylindrica )

We have studied thermal pyrolysis of cogongrass (Imperata cylindrica) at 400°C, 450°C, and 500°C. We have studied the effect of temperature on the yield of solid, liquid, and gaseous pyrolysis products. The maximum yield (33.67%) of liquid product (bio-oil) is obtained at 500°C. The bio-oil contains oxygen-containing compounds with hydroxyl and carboxyl groups: phenol, 2,6-dimethoxyphenol, 2-methoxyphenol, 2-methylphenol, 4-ethyl-2-methoxyphenol, etc.

Study on SEM and EDS Pattern of Charcoal Derived from Cogongrass by Pyrolysis in a Continuous Reactor

Charcoal derived from Cogongrass (Imperata cylindrica) consisting of cellulose, hemicellulose and lignin were collected for the experiment. The Cogongrass feeding to the continuous pyrolysis reactor at 500°C. When its passing the unit operate system, we can received all yield (liquid, solid and gas) on during pyrolysis, expecially, the solid product (charcoal). In this study, We have emphasized the characteristics and pattern surface and inside of charcoal by using Scanning Electron Microscope (SEM) and Energy Disperssive Scanning (EDS).

Received Oil Yields and Chemical Compounds of Mixed Grass Synthesized by Pyrolysis Process

The pyrolysis of mixed grass (Cogongrass and Manilagrass), conducted criteria with temperatures in the range of 400-500°C, the feeding rate of 150, 350, and 550 rpm (r·min −1 )). Preliminary result of proximate analysis was founded that the high volatile matter, low ash and moisture. The products yield calculation showed that the liquid yield of bio-oil obtained from mixed grass was highest of 42.37 % at 350 rpm, the gases and the solid yield of mixed grass by during pyrolysis were 28.88 and 28.75 %, at 350 rpm, respectively,. Indicated that biomass from mixed grass had good received yields because of low solid yield and gas yield and high liquid yield at 350 rpm. The compounds detected in bio-oil from mixed grass showed that the functional groups, especially; Phenols (24.78 %), Phenol, 2,3-dimethyl-(2.52%), Phenol, 2,6- dimethoxy (14.48 %) ,Phenol, 2-methoxy-(3.18 %), Phenol, 3-methyl-(3.23 %), Phenol, 2-methyl-(4.97 %), Phenol, 4-ethyl-2-methoxy-(3.95 %), alcohols, and ketones.

Conversion of Hydrilla verticillata to bio-oil and charcoal using a continuous pyrolysis reactor

ABSTRACT This research investigates the conversion of Hydrilla verticillata into bio-oil and charcoal through a continuous pyrolysis process. The pyrolysis was carried out at a controlled temperature in the range of 300–700°C. The bio-oil and charcoal were analyzed using elemental analysis, chemical composition, and Scanning Electron Microscope-Energy Dispersive X-ray (SEM-EDS). At the highest temperature of 700°C the maximum product yield of bio-oil (41.25%) was found, while the maximum product yield of charcoal was 44.98% at 300°C. These results indicate the influence of temperature variation. The analysis of the Hydrilla verticillata mixture found a great portion of large molecules, including phenols (-OH), esters (-C=O), aldehydes (-CHO), and ketones (-C=O). The SEM analysis of the charcoal determined the enhancement of specific surface areas and microporosity, indicating an active diffusion rate, which may make the product suitable for fuel applications.

Products Yield and Some Properties of Bio- Oil from Three Weed Plants Produced by Continuous Pyrolysis Reactor

The bio-oil products by continuous pyrolysis reactor, which takes place at temperatures in the range of 450-600°C, were to compare the quality of bio-oil extracted from different residual plants were, 1) Oil palm bunch [OPB], 2) Water hyacinth [WHC], and 3) Manila grass [MNG]. The preliminary analyses of three residual plants showed that the liquid yield of bio-oil obtained from OPB was highest (29.55 %) and liquid yield of bio-oil obtained from WHC was lowest (28.3 %)., at 350 rpm., and liquid yield of bio-oil obtained from OPB, WHC and MNG were 55.6, 25.55 and 25.67 %, at 150 rpm., respectively. The results showed that biomass extracted from three residual plants had good qualities because of low moisture content and high fixed carbon. The element contents of three residual plants found that high carbon content. The amount of carbon in the bio-oil obtained from OPB, WHC and MNG were 55.91, 55.57, and 55.03 wt.%., respectively., carbon was relatively high in three residual plants. Hence; In this research are concerns the feeding rate, the control gas flow, the temperatures in reactor and reactor operate for produce the hi quality of bio-oil with three residual plants of resist in Thailand.