Coal gasification offers one of the most versatile and clean ways to convert coal into electricity, hydrogen, and other valuable energy products. The first coal gasification electric power plants are now operating commercially in the
In an Integrated Gasification Combined-Cycle (IGCC) plant, the syngas produced is virtually free of fuel-bound Nitrogen. NOx from the gas turbine is limited to thermal NOx. Diluting the syngas allows for NOx emissions as low as 15 parts per million. Selective Catalytic Reduction (SCR) can be used to reach levels comparable to firing with natural gas if required, to meet more stringent emission levels. Coal gasification may offer a further environmental advantage in addressing concerns over the atmospheric buildup of greenhouse gases, such as Carbon dioxide. If Oxygen is used in a coal gasifier instead of air, Carbon dioxide is emitted as a concentrated gas stream in syngas at high pressure. In this form, it can be captured and sequestered more easily and at lower costs. By contrast, when coal burns or is reacted in air, 80 percent of which is Nitrogen, the resulting Carbon dioxide is diluted and more costly to separate. Efficiency gains are another benefit of coal gasification. In a typical coal combustion plant, heat from burning coal is used to boil water, making steam that drives a steam turbine-generator. In some coal combustion plants, only a third of the energy value of coal is actually converted into electricity, the rest is lost as waste heat. A coal gasification power plant, however, typically gets dual duty from the gases it produces. First, the coal gases, cleaned of impurities, are fired in a gas turbine - much like natural gas - to generate one source of electricity. The hot exhaust of the gas turbine is then used to generate steam for use in a more conventional steam turbine-generator. This dual source of electric power, called a "combined cycle," is much more efficient in converting coal's energy into usable electricity. The fuel efficiency of a coal gasification power plant, in this type of combined cycle, can potentially be boosted to 50 percent or more. Future concepts that incorporate a fuel cell, or a fuel cell-gas turbine hybrid, could achieve efficiencies nearly twice today's typical coal combustion plants.
Higher efficiencies translate into more economical electric power and potential savings for rate-payers. A more efficient plant also uses less fuel to generate power, meaning that less Carbon dioxide is produced. In fact, coal gasification power processes, under development by the US Energy Department, could cut the formation of Carbon dioxide by 40 percent or more per unit of output, compared to today's conventional coal-burning plants. The capability to produce electricity, hydrogen, chemicals, or various combinations - while eliminating nearly all air pollutants and potentially greenhouse gas emissions - makes coal gasification one of the most promising technologies for energy plants of the future.
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STUDENTS BLOG
Saturday, February 25, 2012
New solution to CO2 pollution
Friday, February 24, 2012
Beautiful Thoughts
"When I got home that night as my wife served dinner, I held her hand and said, I've got something to tell you. She sat down and ate quietly. Again I observed the hurt in her eyes.
...
Suddenly I didn't know how to open my mouth. But I had to let her know what I was thinking. I want a divorce. I raised the topic calmly.
She didn't seem to be annoyed by my words, instead she asked me softly, why?
I avoided her question. This made her angry. She threw away the chopsticks and shouted at me, you are not a man! That night, we didn't talk to each other. She was weeping. I knew she wanted to find out what had happened to our marriage. But I could hardly give her a satisfactory answer; she had lost my heart to Jane. I didn't love her anymore. I just pitied her!
With a deep sense of guilt, I drafted a divorce agreement which stated that she could own our house, our car, and 30% stake of my company.
She glanced at it and then tore it into pieces. The woman who had spent ten years of her life with me had become a stranger. I felt sorry for her wasted time, resources and energy but I could not take back what I had said for I loved Jane so dearly. Finally she cried loudly in front of me, which was what I had expected to see. To me her cry was actually a kind of release. The idea of divorce which had obsessed me for several weeks seemed to be firmer and clearer now.
The next day, I came back home very late and found her writing something at the table. I didn't have supper but went straight to sleep and fell asleep very fast because I was tired after an eventful day with Jane.
When I woke up, she was still there at the table writing. I just did not care so I turned over and was asleep again.
In the morning she presented her divorce conditions: she didn't want anything from me, but needed a month's notice before the divorce. She requested that in that one month we both struggle to live as normal a life as possible. Her reasons were simple: our son had his exams in a month's time and she didn't want to disrupt him with our broken marriage.
This was agreeable to me. But she had something more, she asked me to recall how I had carried her into out bridal room on our wedding day.
She requested that every day for the month's duration I carry her out of our bedroom to the front door ever morning. I thought she was going crazy. Just to make our last days together bearable I accepted her odd request.
I told Jane about my wife's divorce conditions. . She laughed loudly and thought it was absurd. No matter what tricks she applies, she has to face the divorce, she said scornfully.
My wife and I hadn't had any body contact since my divorce intention was explicitly expressed. So when I carried her out on the first day, we both appeared clumsy. Our son clapped behind us, daddy is holding mommy in his arms. His words brought me a sense of pain. From the bedroom to the sitting room, then to the door, I walked over ten meters with her in my arms. She closed her eyes and said softly; don't tell our son about the divorce. I nodded, feeling somewhat upset. I put her down outsidethe door. She went to wait for the bus to work. I drove alone to the office.
On the second day, both of us acted much more easily. She leaned on my chest. I could smell the fragrance of her blouse. I realized that I hadn't looked at this woman carefully for a long time. I realized she was not young any more. There were fine wrinkles on her face, her hair was graying! Our marriage had taken its toll on her. For a minute I wondered what I had done to her.
On the fourth day, when I lifted her up, I felt a sense of intimacy returning. This was the woman who had given ten years of her life to me.
On the fifth and sixth day, I realized that our sense of intimacy was growing again. I didn't tell Jane about this. It became easier to carry her as the month slipped by. Perhaps the everyday workout made me stronger.
She was choosing what to wear one morning. She tried on quite a few dresses but could not find a suitable one. Then she sighed, all my dresses have grown bigger. I suddenly realized that she had grown so thin, that was the reason why I could carry her more easily.
Suddenly it hit me... she had buried so much pain and bitterness in her heart. Subconsciously I reached out and touched her head.
Our son came in at the moment and said, Dad, it's time to carry mom out. To him, seeing his father carrying his mother out had become an essential part of his life. My wife gestured to our son to come closer and hugged him tightly. I turned my face away because I was afraid I might change my mind at this last minute. I then held her in my arms, walking from the bedroom, through the sitting room, to the hallway. Her hand surrounded my neck softly and naturally. I held her body tightly; it was just like our wedding day.
But her much lighter weight made me sad. On the last day, when I held her in my arms I could hardly move a step. Our son had gone to school. I held her tightly and said, I hadn't noticed that our life lacked intimacy.
I drove to office.... jumped out of the car swiftly without locking the door. I was afraid any delay would make me change my mind...I walked upstairs. Jane opened the door and I said to her, Sorry, Jane, I do not want the divorce anymore.
She looked at me, astonished, and then touched my forehead. Do you have a fever? She said. I moved her hand off my head. Sorry, Jane, I said, I won't divorce. My marriage life was boring probably because she and I didn't value the details of our lives, not because we didn't love each other anymore. Now I realize that since I carried her into my home on our wedding day I am supposed to hold her until death do us apart.
Jane seemed to suddenly wake up. She gave me a loud slap and then slammed the door and burst into tears. I walked downstairs and drove away.
At the floral shop on the way, I ordered a bouquet of flowers for my wife. The salesgirl asked me what to write on the card. I smiled and wrote, I'll carry you out every morning until death do us apart.
That evening I arrived home, flowers in my hands, a smile on my face, I run up stairs, only to find my wife in the bed - dead.
My wife had been fighting CANCER for months and I was so busy with Jane to even notice. She knew that she would die soon and she wanted to save me from the whatever negative reaction from our son, in case we push thru with the divorce.-- At least, in the eyes of our son--- I'm a loving husband....
Moral-The small details of your lives are what really matter in a relationship. It is not the mansion, the car, property, the money in the bank. These create an environment conducive for happiness but cannot give happiness in themselves. So find time to be your spouse's friend and do those little things for each other that build intimacy. Do have a real happy marriage!
If you don't share this, nothing will happen to you.
If you do, you just might save a marriage.
Many of life's failures are people who did not realize how close they were to success when they gave up.
...
Suddenly I didn't know how to open my mouth. But I had to let her know what I was thinking. I want a divorce. I raised the topic calmly.
She didn't seem to be annoyed by my words, instead she asked me softly, why?
I avoided her question. This made her angry. She threw away the chopsticks and shouted at me, you are not a man! That night, we didn't talk to each other. She was weeping. I knew she wanted to find out what had happened to our marriage. But I could hardly give her a satisfactory answer; she had lost my heart to Jane. I didn't love her anymore. I just pitied her!
With a deep sense of guilt, I drafted a divorce agreement which stated that she could own our house, our car, and 30% stake of my company.
She glanced at it and then tore it into pieces. The woman who had spent ten years of her life with me had become a stranger. I felt sorry for her wasted time, resources and energy but I could not take back what I had said for I loved Jane so dearly. Finally she cried loudly in front of me, which was what I had expected to see. To me her cry was actually a kind of release. The idea of divorce which had obsessed me for several weeks seemed to be firmer and clearer now.
The next day, I came back home very late and found her writing something at the table. I didn't have supper but went straight to sleep and fell asleep very fast because I was tired after an eventful day with Jane.
When I woke up, she was still there at the table writing. I just did not care so I turned over and was asleep again.
In the morning she presented her divorce conditions: she didn't want anything from me, but needed a month's notice before the divorce. She requested that in that one month we both struggle to live as normal a life as possible. Her reasons were simple: our son had his exams in a month's time and she didn't want to disrupt him with our broken marriage.
This was agreeable to me. But she had something more, she asked me to recall how I had carried her into out bridal room on our wedding day.
She requested that every day for the month's duration I carry her out of our bedroom to the front door ever morning. I thought she was going crazy. Just to make our last days together bearable I accepted her odd request.
I told Jane about my wife's divorce conditions. . She laughed loudly and thought it was absurd. No matter what tricks she applies, she has to face the divorce, she said scornfully.
My wife and I hadn't had any body contact since my divorce intention was explicitly expressed. So when I carried her out on the first day, we both appeared clumsy. Our son clapped behind us, daddy is holding mommy in his arms. His words brought me a sense of pain. From the bedroom to the sitting room, then to the door, I walked over ten meters with her in my arms. She closed her eyes and said softly; don't tell our son about the divorce. I nodded, feeling somewhat upset. I put her down outsidethe door. She went to wait for the bus to work. I drove alone to the office.
On the second day, both of us acted much more easily. She leaned on my chest. I could smell the fragrance of her blouse. I realized that I hadn't looked at this woman carefully for a long time. I realized she was not young any more. There were fine wrinkles on her face, her hair was graying! Our marriage had taken its toll on her. For a minute I wondered what I had done to her.
On the fourth day, when I lifted her up, I felt a sense of intimacy returning. This was the woman who had given ten years of her life to me.
On the fifth and sixth day, I realized that our sense of intimacy was growing again. I didn't tell Jane about this. It became easier to carry her as the month slipped by. Perhaps the everyday workout made me stronger.
She was choosing what to wear one morning. She tried on quite a few dresses but could not find a suitable one. Then she sighed, all my dresses have grown bigger. I suddenly realized that she had grown so thin, that was the reason why I could carry her more easily.
Suddenly it hit me... she had buried so much pain and bitterness in her heart. Subconsciously I reached out and touched her head.
Our son came in at the moment and said, Dad, it's time to carry mom out. To him, seeing his father carrying his mother out had become an essential part of his life. My wife gestured to our son to come closer and hugged him tightly. I turned my face away because I was afraid I might change my mind at this last minute. I then held her in my arms, walking from the bedroom, through the sitting room, to the hallway. Her hand surrounded my neck softly and naturally. I held her body tightly; it was just like our wedding day.
But her much lighter weight made me sad. On the last day, when I held her in my arms I could hardly move a step. Our son had gone to school. I held her tightly and said, I hadn't noticed that our life lacked intimacy.
I drove to office.... jumped out of the car swiftly without locking the door. I was afraid any delay would make me change my mind...I walked upstairs. Jane opened the door and I said to her, Sorry, Jane, I do not want the divorce anymore.
She looked at me, astonished, and then touched my forehead. Do you have a fever? She said. I moved her hand off my head. Sorry, Jane, I said, I won't divorce. My marriage life was boring probably because she and I didn't value the details of our lives, not because we didn't love each other anymore. Now I realize that since I carried her into my home on our wedding day I am supposed to hold her until death do us apart.
Jane seemed to suddenly wake up. She gave me a loud slap and then slammed the door and burst into tears. I walked downstairs and drove away.
At the floral shop on the way, I ordered a bouquet of flowers for my wife. The salesgirl asked me what to write on the card. I smiled and wrote, I'll carry you out every morning until death do us apart.
That evening I arrived home, flowers in my hands, a smile on my face, I run up stairs, only to find my wife in the bed - dead.
My wife had been fighting CANCER for months and I was so busy with Jane to even notice. She knew that she would die soon and she wanted to save me from the whatever negative reaction from our son, in case we push thru with the divorce.-- At least, in the eyes of our son--- I'm a loving husband....
Moral-The small details of your lives are what really matter in a relationship. It is not the mansion, the car, property, the money in the bank. These create an environment conducive for happiness but cannot give happiness in themselves. So find time to be your spouse's friend and do those little things for each other that build intimacy. Do have a real happy marriage!
If you don't share this, nothing will happen to you.
If you do, you just might save a marriage.
Many of life's failures are people who did not realize how close they were to success when they gave up.
the sign of success, Thumbs up!
1st Strategy to Turn Failure Into Success: Learn from it. Failure Is A Great Way To Learn.
In fact, if you're wise, you will learn from your failures, and figure out the things you *missed* the last time... the next time you won't make those mistakes, you will learn from the best, you will model your sculpture of your success...carving away what needs to be removed... shaping...honing it until what remains is the sculpture you most want to convey.
In fact, if you're wise, you will learn from your failures, and figure out the things you *missed* the last time... the next time you won't make those mistakes, you will learn from the best, you will model your sculpture of your success...carving away what needs to be removed... shaping...honing it until what remains is the sculpture you most want to convey.
Inspirational Stories of Failure Turned Into Fame
Henry Ford failed and went broke five times before he finally succeeded.
Beethoven handled the violin awkwardly and preferred playing his own compositions instead of improving his technique. His teacher called him hopeless as a composer.
Colonel Sanders had the construction of a new road put him out of business in 1967. He went to over 1,000 places trying to sell his chicken recipe before he found a buyer interested in his 11 herbs and spices. Seven years later, at the age of 75, Colonel Sanders sold his fried chicken company for a finger-lickin' $15 million!
Walt Disney was fired by a newspaper editor for lack of ideas. Disney also went bankrupt several times before he built Disneyland.
Charles Darwin, father of the theory of evolution, gave up a medical career and was told by his father, “You care for nothing but shooting, dogs, and rat catching.” In his autobiography, Darwin wrote, “I was considered by my father, a very ordinary boy, rather below the common standard in intellect.
Albert Einstein did not speak until he was four years old and didn’t read until he was seven. His teacher described him as “mentally slow, unsociable and adrift forever in his foolish dreams.” He was expelled and refused admittance to Zurich Polytechnic School. The University of Bern turned down his Ph.D. dissertation as being irrelevant and fanciful.
The movie Star Wars was rejected by every movie studio in Hollywood before 20th-Century Fox finally produced it. It went on to be one of the largest grossing movies in film history.
Louis Pasteur was only a mediocre pupil in undergraduate studies and ranked 15 out of 22 in chemistry.
When NFL running back Herschel Walker was in junior high school, he wanted to play football, but the coach told him he was too small. He advised young Herschel to go out for track instead. Never one to give up, he ignored the coach's advice and began an intensive training program to build himself up. Only a few years later, Herschel Walker won the Heisman trophy.
When General Douglas MacArthur applied for admission to West Point, he was turned down, not once but twice. But he tried a third time, was accepted and marched into the history books.
After Fred Astaire’s first screen test, the memo from the testing director of MGM, dated 1933, said, “Can’t act! Slightly bald! Can dance a little!” Astaire kept that memo over the fireplace in his Beverly Hills home.
The father of the sculptor Rodin [The Thinker Statue] said, “I have an idiot for a son.” Described as the worst pupil in the school, Rodin failed three times to secure admittance to the school of art. His uncle called him uneducable.
Babe Ruth, considered by sports historians to be the greatest athlete of all time and famous for setting the home run record, also holds the record for strikeouts.
Eighteen publishers turned down Richard Bach’s Jonathan Livingston Seagull, before Macmillan finally published it in 1970. By 1975 it had sold more than seven million copies in the U.S. alone.
Margaret Mitchell's classic Gone with the Wind was turned down by more than twenty-five publishers.
Richard Hooker worked for seven years on his humorous war novel, M*A*S*H, only to have it rejected by 21 publishers before Morrow decided to publish it. It became a runaway bestseller, spawning a blockbusting movie and highly successful television series.
When the first Chicken Soup for the Soul book was completed, it was turned down by thirty-three publishers in New York and another ninety at the American Booksellers Association convention in Anaheim, California, before Health Communications, Inc., finally agreed to publish it. The major New York publishers said, "It is too nicey-nice" and "Nobody wants to read a book of short little stories." Since that time more than 8 million copies of the original Chicken Soup for the Soul book have been sold. The series, which has grown to thirty-two titles, in thirty-one languages, has sold more than 53 million copies.
In 1954, Jimmy Denny, manager of the Grand Ole Opry, fired Elvis Presley after one performance. He told Presley, “You ain’t goin’ nowhere… son. You ought to go back to drivin’ a truck.” Elvis Presley went on to become the most popular singer in America.
Dr. Seuss' first children's book, And to Think That I Saw it on Mulberry Street, was rejected by twenty-seven publishers. The twenty-eighth publisher, Vanguard press, sold six million copies of the book.
Never give up believing in yourself!!!
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