【Learn Ethylene Together】Five questions per day to easily learn about ethylene 05
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【Learning Ethylene Together】Five questions per day to easily learn about ethylene 05 21. The main methods for indicating the residence time in a cracking reaction are ( ), ( ), ( ), ( ). 22. The damper for the portion of air in the combustion air that mixes with the fuel first is called ( ), while the damper for the additional air supplied to the fuel in order to compensate for any deficiency in primary air is called ( ). 23. The chain-scission reaction of alkanes (CnH2n+2) is a reaction involving the breaking of ( ) bonds, and its general reaction formula is ( ). 24. The purpose of draining water from the diluted steam drum is ( ), and the amount of water drained should be controlled at ( )% of the total amount of process water. 25. The accuracy grades of the instruments commonly used today are ( ), ( ), ( ), and ( ). 21. The main methods for representing the residence time of a cracking reaction are ( ), ( ), ( ), ( ). True residence time, apparent residence time, equivalent residence time, average residence time. 22. In the combustion air, the damper that controls the portion of air that mixes with the fuel first is called (), while the damper that supplies additional air to the fuel in order to compensate for any deficiency in primary air is called (). Primary air damper, secondary air damper. 23. The chain-breaking reaction of alkanes (CnH2n+2) is a reaction involving the breaking of ( ) bonds, and its general reaction formula is ( ). C–C CNH2N+2 → CLH2L+2 + CmH2m. 24. The purpose of draining water from the diluted steam drum is (), and the amount of water drained should be controlled at ()% of the total amount of process water. Prevent the accumulation of harmful substances in process water due to its reuse. 7 25. The accuracy grades of the instruments commonly used today are ( ), ( ), ( ), and ( ). 0.5 1 1.5 2.5
21. The main methods for expressing the residence time in a cracking reaction are (true residence time), (apparent residence time), (equivalent residence time), and (average residence time). 22. The damper for the portion of air in the combustion air that mixes with the fuel first is called the (primary air damper), while the damper for the auxiliary air supplied to the fuel in order to compensate for any deficiency in primary air is called the (secondary air damper). 23. The cleavage reaction of alkanes (CnH2n+2) is a reaction in which the (C-C) bond breaks, and its general reaction formula is (CnH2n+2—ClH2l+2+CmH2m). 24. The purpose of draining water from the diluted steam drum is to prevent the accumulation of harmful substances in the process water due to its reuse; the amount of water drained should be controlled at (7%) of the total volume of process water. 25. The accuracy grades of the instruments commonly used today are (0.5), (1), (1.5), and (2).
5. The accuracy grades of the instruments commonly used today are ( ), ( ), ( ), and ( ). 0.5 1 1.5 2.5 Are they different? ?
22, Main air damper, Adjusting damper
21. True residence time, apparent residence time, equivalent residence time, average residence time 22. Primary air damper, secondary air damper 23. C-C, CnH2n+2—ClH2l+2+CmH2m 24. Preventing the accumulation of harmful substances in process water due to its recycling 7 25. 0.5, 1, 1.5, 2
21. The main methods for expressing the residence time in a cracking reaction are (true residence time), (apparent residence time), (equivalent residence time), and (average residence time). 22. The damper for the portion of air in the combustion air that mixes with the fuel first is called the (primary air damper), while the damper for the supplementary air supplied to the fuel in order to compensate for any deficiency in primary air is called the (secondary air damper). 23. The cleavage reaction of alkanes (CnH2n+2) is a reaction in which the (C-C) bond breaks, and its general reaction formula is (CnH2n+2—ClH2l+2+CmH2m). 24. The purpose of draining water from the diluted steam drum is to prevent the accumulation of harmful substances in the process water due to its reuse; the amount of water drained should be controlled at (7%) of the total amount of process water. 25. The accuracy grades of the instruments commonly used today are (0.5), (1), (1.5), and (2)
21. The main methods for expressing the residence time in a cracking reaction are (true residence time), (apparent residence time), (equivalent residence time), and (average residence time). 22. The damper for the portion of air in the combustion air that mixes with the fuel first is called the (primary air damper), while the damper for the supplementary air supplied to the fuel in order to compensate for any deficiency in primary air is called the (secondary air damper). 23. The cleavage reaction of alkanes (CnH2n+2) is a reaction in which the (C-C) bond breaks, and its general reaction formula is (CnH2n+2—ClH2l+2+CmH2m). 24. The purpose of draining water from the diluted steam drum is to prevent the accumulation of harmful substances in the process water due to its reuse; the amount of water drained should be controlled at (7%) of the total amount of process water. 25. The accuracy grades of the instruments commonly used today are (0.5), (1.0), (1.5), and (2.0)