Coal to chemical production is in China where coal dependent provinces such as Shanxi are struggling to control its pollution. Refined coal is the product of a coal-upgrading technology that removes moisture and certain pollutants from lower-rank coals such as sub-bituminous and lignite (brown) coals. It is one form of several precombustion treatments and processes for coal that alter coal's characteristics before it is burned. Thermal efficiency improvements are achievable by improved pre-drying (especially relevant with high-moisture fuel such as lignite or biomass).The goals of precombustion coal technologies are to increase efficiency and reduce emissions when the coal is burned. Precombustion
Brown Bear, Brown Bear, What Do You See? Brown Bear, Brown Bear, What Do You See? Brown Bear, Brown Bear, What Do You See? is a children's picture book published in 1967. Written and illustrated by Bill Martin, Jr. and Eric Carle, the book is designed to help toddlers associate colors and meanings to objects. The book itself has little to no plot. Instead, the narrator asks various animals what they see with the response usually being another animal, the respondent is then asked what they themselves see, and the process is repeated. It features a Brown Bear, Red Bird, Yellow Duck, Blue Horse, Green Frog, Purple Cat,