Prize-winning Quiz on Coal Chemical Engineering Knowledge 2

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1. The five key points for equipment inspection are: ( ), ( ), ( ), ( ), ( ). 2. The five principles of lubrication management are: ( ), ( ), ( ), ( ), ( )； Three filters: (), (), (). 3. The operating conditions favorable for gas absorption should be ( ). A. Low temperature + high pressure ； B. High temperature + high pressure ； C. Low temperature + low pressure ； D. High temperature + low pressure. 4. What is the thermal stability of coal? 5. Fourteen prohibitions in the production area? Reference answer: Score up to floor 6; no further scoring thereafter. 1. Listen, touch, check, look, smell. 2. Fixed location, fixed quality, fixed quantity, fixed frequency, fixed person ； From the large oil container to the storage tank, from the storage tank to the oil pot, and from the oil pot to the lubrication points. 3. a 4. The thermal stability of coal refers to its ability to remain stable under heat during the gasification process; in other words, it is the property that allows coal to maintain its original particle size even when temperatures change rapidly. The thermal stability of coal has a significant impact on its gasification; coal with good thermal stability does not break into small pieces during gasification, or if it does break, the fragmentation is minimal ； Coal with poor thermal stability will explode into small pieces or powder during the gasification process. An increase in the amount of fine coal particles and coal powder raises the resistance inside the furnace and leads to losses of the product, thereby reducing the efficiency of gasification. Moreover, since pulverized coal tends to form sludge, in severe cases this can disrupt the entire gasification process and even cause a shutdown of the plant. Bituminous coal and lignite with too poor thermal stability cannot be used for fixed-bed gasification; generally, bituminous coal has higher thermal stability. 5. (1) Strengthen the management of open flames; smoking is prohibited within the factory premises. (2) Minors are not allowed to enter the production area. (3). Sleeping, engaging in personal tasks, leaving the post, or doing anything unrelated to production is not allowed during working hours. (4). Drinking is prohibited before and during shifts. (5). It is prohibited to use flammable liquids such as gasoline to clean equipment, tools, and clothing. (6). Those who do not wear protective equipment as required are not allowed to enter the production area. (7) Equipment without complete safety devices shall not be put into use. (8) Equipment and tools that are not under one’s own responsibility shall not be used. (9). Maintenance work shall not commence if safety measures are not implemented. (10). Equipment that has been shut down for maintenance must not be put back into use without a thorough inspection. (11). Working at heights is prohibited without a high-altitude work permit, without wearing a safety belt, or when the scaffolding or stepping boards are not secure. (12). Work is not permitted if a scaffold is not properly secured on the asbestos shingles. (13). Mobile power tools without installed electric shock protection devices must not be used. (14). Employees who have not obtained a safety operation permit are not allowed to work independently ； For special types of work, operations are not permitted without obtaining the necessary certification. This post was last edited by wbp on 2009-4-4 08:44]