Refining Knowledge (Technology) Daily Question 101127
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We welcome everyone to actively participate in the learning and discussion of professional basic knowledge in the refining technology exchange area! In accordance with the forum’s unified requirements, the maximum score for this activity is 5 Wealth points, and rating charm is prohibited. Friendship requests and duplicate ratings are also declined. , N6 t. z4 a! j+ u Please be cautious when posting; edits are invalid. Reference answers are provided for reference. Those with different opinions can post discussions the next day. Appropriate rewards will be given to those who provide solutions or their own opinions regarding the daily question’s reference answer! The focus is on participation, and there are prizes for participating! Friends who do not want their replies hidden can refer to: http://bbs.hcbbs.com/thread-492556-1-1.html. 9 1 For flue gas sampling, which container should be used? ( )/L: A. Steel cylinder B. Spherical tank C. Glass bottle D. Plastic bottle. 2 Which of the following is generally not considered part of flue gas analysis? A. Oxygen content B. Carbon monoxide content C. Carbon dioxide content D. Hydrogen sulfide content. 5 The reason for backfire in a heating furnace is ( ): A. Excessive suction force B. Blockage of the gas burner C. Insufficient air supply to the furnace D. The combustion rate exceeds the adjustable range. 4 The usual cause of oxidation and peeling of the furnace tubes is ( ): A. An excessively high excess air coefficient in the furnace B. An excessively low excess air coefficient in the furnace C. It has nothing to do with the excess air coefficient of the furnace D. Incomplete combustion in the furnace. 5 The surface temperature of the furnace tubes is determined by ( ). % S3 E4 L1 K4 _( _2 A: Heating capacity of the furnace; B: Properties of the crude oil; C: Temperature at the furnace outlet; D: Material of the furnace tubes. Answer: BDDAD
1、C 2、C 3、A 4、A 5、A
Reply 1# dongliangsir 1.B 2.C 3.D 4.A 5.C
1. C 2. A 3. B 4. A 5. A
Reply 1# dongliangsir ACBDC
This post was last edited by dongliangsir on 2010-11-28 at 11:39. Reply 1# dongliangsir: 1. For flue gas sampling, which should be used? (A) / L# I( 8 Z! e Q: {) X A. Steel cylinder B. Ball tank C. Glass bottle D. Plastic bottle. 2. Which of the following is generally not part of flue gas analysis? (D) A. Oxygen content B. Carbon monoxide content C. Carbon dioxide content D. Hydrogen sulfide content. 5. T/ j9 m8 R* L( V- J1 D9 J9 ?$ P 3. The reason for backfire in a heating furnace is (D); P( ]1 r( c8 `4 Q1 v# A/ j# k, g/ Y- ]2 ^6 S2 A |4 O) a: w2 K A. Excessive draft B. Clogged gas burner C. Insufficient air supply to the furnace D. Combustion speed exceeding the adjustable range. ” a K' Q' q7 P3 ~' V$ b8 {$ H ~0 H 4. The usual cause of oxidation and peeling of the heating furnace’s tubes is (A). 3 r0 I( X4 o8 s- ^4 ^ A. Due to an excessively high excess air coefficient in the heating furnace B. Due to an excessively low excess air coefficient in the heating furnace 8 q N9 A0 S' m/ W C. It has nothing to do with the excess air coefficient of the heating furnace D. Due to incomplete combustion in the heating furnace. S6 ]) C/ D( d% k& K- O 5. The surface temperature of the furnace tubes is determined by (CD). % S3 E4 L1 K4 _( _2 A: Heating furnace processing capacity B Properties of crude oil C Temperature indicator at furnace outlet D Material of furnace tubes
1 For flue gas sampling, (A) should be used: A. Steel cylinder B. Spherical tank C. Glass bottle D. Plastic bottle. 2 The item that generally does not fall under flue gas analysis is (D): A. Oxygen content B. Carbon monoxide content C. Carbon dioxide content D. Hydrogen sulfide content. 3 The reason for backfire in a heating furnace is (D): A. Excessive draft B. Clogged gas burner C. Insufficient air supply to the furnace D. The combustion rate exceeds the adjustable range. 4 The usual cause of oxidation and peeling of the furnace tubes is (A): A. An excessively high excess air coefficient in the heating furnace B. An excessively low excess air coefficient in the heating furnace C. It has nothing to do with the excess air coefficient of the heating furnace D. Incomplete combustion in the heating furnace. 5 The surface temperature of the furnace tubes is determined by (A). A Heating furnace processing capacity B Properties of the feed oil C Furnace outlet temperature parameters D Material of the furnace tubes