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Applied Chemistry and Physics
Published in Robert A. Burke, Applied Chemistry and Physics, 2020
Ethyne has two carbons and two hydrogens with a single triple bond between the carbons. Ethyne or acetylene is a highly flammable, colorless gas with an ethereal odor. It has wide explosive limits from 2.5% to 80% in air. It can form explosive compounds with silver, mercury and copper. Acetylene is so unstable that it is dissolved in acetone inside of its container. Acetylene is not shipped in tank car or tank truck quantities. Calcium carbide, a salt, is used to generate acetylene by reacting with water. When the water contacts calcium carbide, acetylene gas is generated. Calcium carbide is shipped in specially designed closed containers that are placed on flatbed rail and highway vehicles. Molecular and structural formulas are shown for ethyne (acetylene) are shown in Figure 3.52.
Configuration Management Baselines
Published in Jon M. Quigley, Kim L. Robertson, Configuration Management, 2019
Jon M. Quigley, Kim L. Robertson
We have chosen the carbide miner's lamp (which produced acetylene gas from calcium carbide and water) as an example of O&M parts selection. Thomas Wilson developed the first commercially economical method of producing calcium carbide in 1892 using lime and coke. Calcium carbide when mixed with water produces acetylene gas, as shown in Equation 9.1. Calcium carbide when mixed with water produces acetylene gas.CaC2(s)+2H2O(l)→Ca(OH)2(aq)+C2H2(g)
Introduction
Published in Arthur W. Hounslow, Water Quality Data, 2018
Carbonization produces coke residue and volatile matter. At low temperatures, that is, below бOO°C, carbonization produces 15–22 gallons of tar per ton of coal. At high temperatures, above бOO°C, carbonization produces 9–14 gallons of tar per ton (approximately 5%). However, this results in the maximum coke production. Coke is used extensively in metallurgy. The reaction of coke and lime in a high-temperature electric furnace produces calcium carbide, which, when treated with water, produces acetylene. This is the coal-base, synthetic route to many organic compounds. It does require high energy usage. The reactions are
Experimental investigation on spark-ignition (SI) engine fuelled with acetylene in dual-fuel mode
Published in International Journal of Ambient Energy, 2022
Sumit Sharma, Dilip Sharma, Shyam Lal Soni, Digambar Singh
Acetylene gas has good combustion properties similar to the hydrogen. Due to the wide flammability limit and higher flame speed, the engine can be run with a very lean mixture of air and acetylene (Srivastava et al. 2017; Sharma et al. 2019). As shown in Table 1, the properties of acetylene are comparable to other existing gaseous as well as liquid fuels. Presently, acetylene is mainly being used for welding and gas cutting purpose and is produced by the hydrolysis of calcium carbide. Considering its properties it was decided to investigate the performance, emission, and combustion characteristics of acetylene-fuelled SI engine at 10 compression ratio (CR), spark timing 20°bTDC, and 1400 rpm with various flow rates (50, 100, 150 and 200 LPH) of acetylene.