【Learn Ethylene Together】Five questions per day to easily learn about ethylene 17
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【Learn Ethylene Together】Five questions per day to easily learn about ethylene. 17 81. The factors that affect cracking include the cracking conditions, such as ( ), ( ); the ( ) of the cracking furnace; and ( ). Among these, ( ) plays the most important role. 82. There are mainly two types of coking reactions that occur in areas such as the furnace tubes of cracking furnaces; one type is ( ), and the other type is ( ). 83. Common methods for cleaning coke include ( ), ( ), ( ), ( ), etc. 84. The main reasons for the fracture of radiant section furnace tubes are ( ), ( ), ( ), ( ). 85. The pipelines arranged on the ductwork are usually connected by wires, and the purpose of this is ( ). 81. The factors affecting pyrolysis include the pyrolysis conditions, such as ( ), ( ), the ( ) of the pyrolysis furnace, and ( ); among these, ( ) plays the most important role. Pyrolysis temperature, residence time, hydrocarbon pressure, structure and type, raw material properties, raw material properties. 82. There are mainly two types of coking reactions that occur in the tubes of pyrolysis furnaces; one type is ( ), and the other type is ( ). Small molecular unsaturated hydrocarbons undergo polymerization and dehydrogenation reactions at high temperatures, while aromatic hydrocarbons undergo polycyclization reactions. 83. Common methods for removing coke include ( ), ( ), ( ), ( ) etc. Air-steam coking, pure steam coking, hydraulic coking, mechanical coking. 84. The main reasons for the fracture of furnace tubes in the radiation section are ( ), ( ), ( ), ( ). Creep, carburization, thermal shock, thermal fatigue. 85. Pipelines arranged in a pipeline tray are usually connected by wires; the purpose of this is ( ). Discharge static electricity
81 Pyrolysis temperature, residence time, hydrocarbon pressure, structure and form, characteristics of raw materials. 82 Small molecular unsaturated compounds undergo polymerization and dehydrogenation reactions at high temperatures ； Cyclization polymerization of aromatics 83 Air-steam coking, pure steam coking, hydraulic coking, mechanical coking 84 Creep, carburization, thermal shock, thermal fatigue 85 Static electricity discharge
81. The factors affecting pyrolysis include the pyrolysis conditions, such as (pyrolysis temperature), (residence time), the (hydrocarbon partial pressure) in the pyrolyzer, and its (structure and form); among these, (raw material characteristics) play the most important role. 82. The coking reactions that occur in areas such as the furnace tubes of cracking furnaces fall into two main categories: one is the polymerization and dehydrogenation of small molecular unsaturated hydrocarbons at high temperatures, and the other is the polycondensation polymerization of aromatic hydrocarbons. 83. Common methods for removing coke include (air-steam coking), (pure steam coking), (hydraulic coking), (mechanical coking), etc. 84. The main causes of tube failure in the radiant section are (creep), (carburization), (thermal shock), and (thermal fatigue). 85. The pipelines arranged in the ductwork are usually connected by wires, and the purpose of this is (to prevent static electricity).
81. The factors affecting pyrolysis include the pyrolysis conditions, such as (pyrolysis temperature), (residence time), the (hydrocarbon partial pressure) in the pyrolyzer, and its (structure and form); among these, (raw material characteristics) play the most important role. 82. The coking reactions that occur in areas such as the furnace tubes of cracking furnaces fall into two main categories: one is the polymerization and dehydrogenation of small molecular unsaturated hydrocarbons at high temperatures, and the other is the polycondensation polymerization of aromatic hydrocarbons. 83. Common methods for removing coke include (air-steam coking), (pure steam coking), (hydraulic coking), (mechanical coking), etc. 84. The main causes of tube failure in the radiant section are (creep), (carburization), (thermal shock), and (thermal fatigue). 85. The pipelines arranged in the ductwork are usually connected by wires, and the purpose of this is (to prevent static electricity).
81. The factors affecting pyrolysis include the pyrolysis conditions, such as (pyrolysis temperature), (residence time), the (hydrocarbon partial pressure) in the pyrolyzer, and its (structure and form); among these, (raw material characteristics) play the most important role. 82. The coking reactions that occur in areas such as the furnace tubes of cracking furnaces fall into two main categories: one is the polymerization and dehydrogenation of small molecular unsaturated hydrocarbons at high temperatures, and the other is the polycondensation polymerization of aromatic hydrocarbons. 83. Common methods for removing coke include (air-steam coking), (pure steam coking), (hydraulic coking), (mechanical coking), etc. 84. The main causes of tube failure in the radiant section are (creep), (carburization), (thermal shock), and (thermal fatigue). 85. The pipelines arranged in the ductwork are usually connected by wires, and the purpose of this is (to prevent static electricity).
81. The factors affecting pyrolysis include the pyrolysis conditions, such as (pyrolysis temperature), (residence time), the (hydrocarbon partial pressure) in the pyrolyzer, and its (structure and form); among these, (raw material characteristics) play the most important role. 82. The coking reactions that occur in areas such as the furnace tubes of cracking furnaces fall into two main categories: one is the polymerization and dehydrogenation of small molecular unsaturated hydrocarbons at high temperatures, and the other is the polycondensation polymerization of aromatic hydrocarbons. 83. Common methods for removing coke include (air-steam coking), (pure steam coking), (hydraulic coking), (mechanical coking), etc. 84. The main causes of tube failure in the radiant section are (creep), (carburization), (thermal shock), and (thermal fatigue). 85. The pipelines arranged in the ductwork are usually connected by wires, and the purpose of this is (to prevent static electricity).
81. The factors affecting pyrolysis include the pyrolysis conditions, such as (pyrolysis temperature), (residence time), the (hydrocarbon partial pressure) in the pyrolyzer, and its (structure and form); among these, (raw material characteristics) play the most important role. 82. The coking reactions that occur in areas such as the furnace tubes of cracking furnaces fall into two main categories: one is the polymerization and dehydrogenation of small molecular unsaturated hydrocarbons at high temperatures, and the other is the polycondensation polymerization of aromatic hydrocarbons. 83. Common methods for removing coke include (air-steam coking), (pure steam coking), (hydraulic coking), (mechanical coking), etc. 84. The main causes of tube failure in the radiant section are (creep), (carburization), (thermal shock), and (thermal fatigue). 85. The pipelines arranged in the ductwork are usually connected by wires, and the purpose of this is (to prevent static electricity).