The Pyrolysis Characteristics of Low Ash Lignite

2013 ◽  
Vol 291-294 ◽  
pp. 755-758
Author(s):  
Ying Xu ◽  
Yong Wang ◽  
Yong Fa Zhang ◽  
Guo Jie Zhang ◽  
Xiang Lan Li
Keyword(s):  
Weight Loss ◽  
Heating Rate ◽  
Maximum Rate ◽  
Main Process ◽  
Pyrolysis Process ◽  
Loss Process ◽  
Pyrolysis Characteristics ◽  
Second Stage ◽  
Three Stages ◽  
Weight Loss Process

The pyrolysis characteristics of lignite with low ash were investigated and the influences of heating rate on the weight loss process were also discussed. The results showed the lignite pyrolysis process can be divided into three stages, in which the second stage, the temperature range is about 300oC ~550oC, is the main process of the weight loss; with the heating rate is enhanced, the temperature of maximum rate of weight loss was increased while the maximum rate of coal weight loss is increased, and the temperature of maximum rate of coal weight loss is basically the same.

Pyrolysis Characteristics and Kinetics of Low Rank Coal

2011 ◽  
Vol 695 ◽  
pp. 493-496 ◽  
Author(s):  
Yong Hui Song ◽  
Jian Mei She ◽  
Xin Zhe Lan ◽  
Jun Zhou
Keyword(s):  
Weight Loss ◽  
Heating Rate ◽  
Frequency Factor ◽  
Low Rank ◽  
Coal Pyrolysis ◽  
Pyrolysis Characteristics ◽  
Second Stage ◽  
Thermo Gravimetric Analyzer ◽  
Kinetics Of ◽  
Pyrolysis Kinetic

The pyrolysis characteristics of Jianfanggou(JFG) coal was studied using a thermo-gravimetric analyzer and the pyrolysis kinetic parameters were calculated at the different heating rate. The results showed the DTG curves under different heating rate had three peaks and the corresponding temperature were 100°C, 470°C and 750°C, the pyrolysis process can be divided into three stages conclusively. The maximum weight loss rate at 470°C indicated the major weight loss occurred in the second stage. The Tb, Tf and T∞ obtained under experiment situation. The results of the JFG coal pyrolysis kinetic showed the Tb, Tf and T∞ increased gradually with the accretion of the heating rate. In the meantime, the variation of frequency factor was consistent with the trend of activation energy.

Effect of Heating Rate on the Deinking Sludge Pyrolysis Character

2014 ◽  
Vol 670-671 ◽  
pp. 205-208
Author(s):  
Yuan Yuan Wang ◽  
Jia Chuan Chen ◽  
Gui Hua Yang
Keyword(s):  
Heating Rate ◽  
Integration Method ◽  
Pyrolysis Process ◽  
First Order ◽  
Pyrolysis Characteristics ◽  
Thermal Gravimetric Analyzer ◽  
Three Stages ◽  
Kinetics Of ◽  
Order Parallel ◽  
Organic Decomposition

In this paper, the thermogravimetic (TG) and differential thermogravimetric (DTG) curves of deinking sludge from Huatai Group Co., Ltd were derived from tests of thermal gravimetric analyzer (TGA). Pyrolysis character and kinetics of deinking sludge were investigated using thermalanalysis. The result showed that the pyrolysis process was composed of three stages: water lose stage, organic decomposition and decomposition of residues. The dynamical model of this pyrolysis process could be expressed by three first-order parallel reaction. The kinetic parameters of pyrolysis reaction were calculated respectively by Coats-Redfern integration method, the effect of heating rate on the deinking sludge pyrolysis characteristics was discussed.

Keto Trim Fast : Most Powerful Review & Fast Details! v1

2022 ◽  
Author(s):  
trimfastketo not provided
Keyword(s):  
Weight Loss ◽  
Loss Process ◽  
Weight Loss Process

Ketosis has been one of the biggest weight loss buzzwords of the last decade. Ketosis is a proven weight loss process your body enters when fasting or following a keto diet.

Pyrolysis Characteristics of Pine Powder and Polyvinyl Chloride of Municipal Solid Waste in Thermogravimetric Analyzer

2013 ◽  
Vol 781-784 ◽  
pp. 2009-2012 ◽  
Author(s):  
Hai Yu Meng ◽  
Shu Zhong Wang ◽  
Lin Chen ◽  
Jun Zhao ◽  
Zhi Qiang Wu
Keyword(s):  
Weight Loss ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Heating Rate ◽  
Polyvinyl Chloride ◽  
Heating Rates ◽  
Pyrolysis Characteristics ◽  
Thermogravimetric Analyzer ◽  
Tg And Dtg ◽  
Obvious Weight Loss

The pyrolysis characteristics of pine powder and polyvinyl chloride (PVC), respectively representing the biomass and plastics components of municipal solid waste, were studied in a thermogravimetric analyzer, and the influence of heating rate on pyrolysis characteristics was also investigated. The pyrolysis temperature was heated from ambient up to 900 °C at different heating rates including 10, 20 and 40 °Cžmin-1. The pyrolysis of pine powder was composed of two obvious weight loss phases, which were dehydration and the decomposition of cellulose and hemicellulose. The lignin in pine powder decomposed over a broad temperature range until 900°C. The pyrolysis of PVC was complicated, and included the release of hydrogen chloride (HCl), the formation of hydrocarbons. Besides, the additives in PVC decomposed at about 600 °C. The TG and DTG curves of pyrolysis for pine powder and PVC were similar at different heating rates, however, each weight loss phase of pyrolysis was shifted to high temperature with increasing the heating rate.

scholarly journals The use of green tea in the weight loss process: a review of the literature

2021 ◽  
pp. 49381-49384
Keyword(s):  
Physical Activity ◽  
Weight Loss ◽  
Green Tea ◽  
Body Fat ◽  
Weight Reduction ◽  
Research Strategy ◽  
Review Of The Literature ◽  
Treatment Methods ◽  
Loss Process ◽  
Weight Loss Process

A disease that generates great concern worldwide is obesity, through which the accumulation of body fat can result in the increase of other health problems. The use of plants is evolving every day as a strategy for weight reduction and one of the treatment methods that is expanding the most is the consumption of green tea. The objective of this study was to conduct a review of the last five years of studies on the use of green tea and its effects on weight loss. As a research strategy, it was used data available in the platforms: Pubmed, Scielo, Lilacs and Google Scholar. However, the studies analyzed on green tea for weight loss and prevention of obesity indicate that there are better results when it is associated with physical activity, diet and specialized monitoring.

Pyrolysis Characteristics and Recovery of the Metallic and Nonmetallic Materials in Wasted Printed Circuit Boards

2011 ◽  
Vol 347-353 ◽  
pp. 2107-2111
Author(s):  
Hong Ting Ma ◽  
Guo Li Yang ◽  
Su Feng Hao
Keyword(s):  
Weight Loss ◽  
Heating Rate ◽  
Printed Circuit Boards ◽  
Pyrolysis Temperature ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Pyrolysis Characteristics ◽  
Electrical Components

A typical printed circuit boards (PCBs) has been investigated by using thermo-gravimetric analyser to study its pyrolysis characteristics, the results indicate that the maximum weight loss rate occurs at temperature between 320°C and 360°C. A higher heating rate results in higher initial, final, peak temperature, and a longer process of significant weight loss. At the same pyrolysis temperature, heating rate has little effect on the total weight loss. In addition, 1kg PCBs based FR-4 was pyrolyzed in a fixed-bed reactor. The pyrolysis residues are very friable, the organic, glass fiber and metallic fractions can easily be separated, and the electrical components can easily be removed from the remains. Considering energy-saving, better control and design of the pyrolysis process, the optimal pyrolysis parameters were suggested at heating rate 10°C/min, final pyrolysis temperature 500°C and holding time 30 min.

Kinetic Study of PVC Pyrolysis in Air by Thermogravimetric Analysis Using the Friedman Method

2012 ◽  
Vol 427 ◽  
pp. 64-69 ◽  
Author(s):  
Bin Han ◽  
Yu Long Wu ◽  
Wei Feng ◽  
Zhen Chen ◽  
Ming De Yang
Keyword(s):  
Activation Energy ◽  
Thermogravimetric Analysis ◽  
Thermal Degradation ◽  
Heating Rate ◽  
Inert Atmosphere ◽  
Nitrogen Atmosphere ◽  
Pyrolysis Process ◽  
Pyrolysis Mechanism ◽  
Second Stage ◽  
Friedman Method

The thermal degradation of PVC in air ambience was investigated by the thermogravimetric analysis (TGA). The experiments were carried out at different heating rate of 5, 10, 20 and 40°C/min, respectively. The activation energy was calculated by the Friedman method. The pyrolysis mechanism of PVC in air was discussed and compared with that in Nitrogen atmosphere. The pyrolysis process of PVC in air could be divided into two main stages: 200 °C ~ 380 °C and 400 °C ~ 600 °C, which obtained by TGA at the heating rate of 5°C/min. The second stage could be further subdivided into two parts by 465 °C. It can be concluded that the oxygen in air affected the second stage more obviously than that of the first one, in comparison with inert atmosphere. The activation energy of the second stage was still larger than the first stage.

Role of Mental Simulations in the Weight Loss Process

2014 ◽  
Vol 150 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Magdalena Marszał-Wiśniewska ◽  
Ewa Jarczewska-Gerc
Keyword(s):  
Weight Loss ◽  
Loss Process ◽  
Weight Loss Process

scholarly journals Effectiveness of different types of mental simulation in the weight loss process based on a perseverance study among people with different BMI

2021 ◽  
Vol 79 (1) ◽  
Author(s):  
Wojciech Styk ◽  
Szymon Zmorzyński ◽  
Waldemar Klinkosz
Keyword(s):  
Weight Loss ◽  
Mental Simulation ◽  
Overweight And Obesity ◽  
Loss Process ◽  
Different Types ◽  
Process Simulations ◽  
Body Mass Indexes ◽  
The Impact ◽  
Mean Time ◽  
Weight Loss Process

Abstract Background Most of the world’s population lives in countries in which overweight and obesity kill more people than does underweight. The weight loss process can be supported by mental simulations, which are used to help individuals to effectively strive towards various goals. The aim of this study was to determine the impact of different types of mental simulations on perseverance, resistance to distractors and the ability to inhibit irrelevant thoughts or memories in people with different body mass indexes (BMI). Methods The study included 252 participants. They performed process simulations and outcome simulations, using instructions presented to them during the experiment. Perseverance and resistance to distractors were determined using a computer maze-solving task. Two indicators of perseverance were analysed: number of maze tasks solved and total time spent on solving the test. Mean time spent on a single task was used as a measure of resistance to distractors and the ability to inhibit irrelevant thoughts and memories. Results The results of the analyses showed that the type of mental simulation used had an effect on the indicators of perseverance. Process simulation subjects completed more tasks and spent more time solving the test than outcome simulation subjects. A relationship was found between the subjects’ BMI and the investigated indicators. Individuals who were underweight, overweight or obese scored lower on all three indicators compared to subjects with normal BMI. In people with a BMI above normal, mental simulations increased resistance to distractors and the ability to inhibit thoughts sidetracking them from the task at hand. It is possible that increasing the resistance to distractors is responsible for the effectiveness of mental simulations in the weight loss process. Conclusion Our results can be applied in developing interventions for people who suffer from overweight and obesity. Psychological interventions based on mental simulations can be used to assist individuals in physical activity, leading to an improvement in health, but it has to be underlined that the mechanism of their action may vary from person to person.

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