Abstract Using a device composed of constant pressure separatory funnel and a distillation flask, the reaction between saturated brine and calcium carbide is a common method for preparing acetylene in the laboratory. This experiment produces a large amount of paste-like Ca(OH)2 precipitation, and there are problems such as too fast reaction rate, uncontrollable reaction process, unstable air flow, and foam rushing out with the gas to block the conduit. In this paper, 7 mm glass beads were mixed with calcium carbide in a drop-type gas generator, and 10% ammonium chloride solution was used as the reaction solution to prepare acetylene. By the method, the problems in the laboratory preparation of acetylene were solved and the efficiency of preparation of acetylene was improved.
SHI Yi-Lin, ZHANG Zun-Ting, DONG Li-Ying. Preparation of Acetylene by Drop-Type Gas Generator[J]. Chinese Journal of Chemical Education, 2023, 44(19): 96-99.
