Method for calculating octane number loss in gasoline catalytic cracking process

A technology of catalytic cracking gasoline and calculation method, which is applied in the field of calculation of octane number loss, can solve the problems of gasoline octane number loss, difficulty, and inability to meet the needs of practical applications, and achieve efficient calculation methods and accurate calculation results Effect

CN113705020APending Publication Date: 2021-11-26SOUTHWEST PETROLEUM UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-11-26

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Abstract

The invention relates to a method for calculating the octane number loss in a gasoline catalytic cracking process. The method comprises the following steps of collecting the historical operation parameters of a gasoline catalytic cracking device; and substituting the historical operation data of the catalytic cracking device into a calculation formula, and calculating to obtain the octane number loss in the gasoline catalytic cracking process. According to the method, the octane number in the operation process of the catalytic cracking gasoline device can be effectively analyzed, the problems that an existing octane number monitoring device is unstable and cannot meet the actual requirements are solved, the calculated octane number loss is more accurate, the calculation method is more efficient, and a guidance basis is provided for the real-time monitoring of the octane number loss in the gasoline catalytic cracking process.
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Description

technical field

[0001] The invention relates to the technical fields of petroleum refining and chemical industry, in particular to a calculation method for octane number loss in the process of catalytic cracking gasoline. Background technique

[0002] At present, in commodity gasoline, up to 70% of gasoline is produced by refining process. The existing technology in our country generally reduces the octane number in the process of gasoline refining, and every reduction of one unit of octane number is equivalent to a loss of 150CNY / t. The traditional methods for calculating gasoline octane loss include the motor method and the octane method, but these methods are polluting, time-consuming, and costly, and are not suitable for on-line monitoring in chemical production. Since the catalytic cracking gasoline refining process is continuous, although the operating variable is sampled every 3 minutes, the measurement of the octane number (dependent variable) is cumbersome, and onl...

Examples

Embodiment Construction

[0014] The present invention will be further described below in conjunction with the examples, but not as a basis for limiting the present invention.

[0015] The present invention provides a kind of calculation method of the octane number loss in catalytic cracking gasoline process, and this method comprises the following steps:

[0016] Step 1, according to the historical operation data of the catalytic cracking gasoline unit, collect the pump inlet filter differential pressure, outlet main pipe temperature, reducer temperature, heat exchanger shell side outlet pipe temperature, refined gasoline output Calculation parameters such as device temperature and octane number data of raw oil;

[0017] Step 2: Substituting the processed data into the formula to calculate the octane number loss in the process of catalytic cracking gasoline, the specific calculation formula is:

[0018]

[0019]

[0020] In the formula: F is the octane number loss in the process of catalytic cr...