This time we are looking on the crossword puzzle clue for: __ cracking.
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Last seen on: Newsday.com Crossword – Aug 15 2020
Random information on the term “__ cracking”:
Fluid catalytic cracking (FCC) is one of the most important conversion processes used in petroleum refineries. It is widely used to convert the high-boiling, high-molecular weight hydrocarbon fractions of petroleum crude oils into more valuable gasoline, olefinic gases, and other products. Cracking of petroleum hydrocarbons was originally done by thermal cracking, which has been almost completely replaced by catalytic cracking because it produces more gasoline with a higher octane rating. It also produces byproduct gases that have more carbon-carbon double bonds (i.e. more olefins), and hence more economic value, than those produced by thermal cracking.
The feedstock to FCC is usually that portion of the crude oil that has an initial boiling point of 340 °C (644 °F) or higher at atmospheric pressure and an average molecular weight ranging from about 200 to 600 or higher. This portion of crude oil is often referred to as heavy gas oil or vacuum gas oil (HVGO). In the FCC process, the feedstock is heated to a high temperature and moderate pressure, and brought into contact with a hot, powdered catalyst. The catalyst breaks the long-chain molecules of the high-boiling hydrocarbon liquids into much shorter molecules, which are collected as a vapor.
Random information on the term “GET”:
The get of an animal are the offspring of a particular individual male animal. It is derived from the term “begat”, meaning to father offspring. The term is frequently used in livestock raising and informal animal husbandry, notably horse breeding to describe the offspring of a stallion. In show competition, a “get of sire” class evaluates a group of animals who have the same sire and evaluates the consistency with which a given sire is able to pass on desirable characteristics to his offspring.