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Visual test system for heat transfer and scale inhibition performance of oil sealing water cooler in oil refinery

A technology of oil refining equipment and testing system, which is applied in the field of visual testing system, can solve the problems of large differences in heat transfer performance and resistance performance parameters, and the inability to simulate the fouling of water coolers, etc., so as to achieve easy observation and research, high reliability, The effect of stable test conditions

Active Publication Date: 2017-10-31
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional liquid-liquid water cooler test platform is tested with a clean medium, which cannot simulate the fouling of the water cooler, and the obtained heat transfer performance and resistance performance parameters are quite different from the actual situation.

Method used

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  • Visual test system for heat transfer and scale inhibition performance of oil sealing water cooler in oil refinery
  • Visual test system for heat transfer and scale inhibition performance of oil sealing water cooler in oil refinery
  • Visual test system for heat transfer and scale inhibition performance of oil sealing water cooler in oil refinery

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0075] During the implementation of this example, the types of test heat exchange tubes of the oil seal cooler test assembly 4 were copper plain tubes, stainless steel plain tubes, and Ni-P electroless plated tubes in which the surface of the copper plain tube was used as the base heat exchange tube for electroless plating. Such as image 3 As shown, the fouling curves of the three heat exchange tubes during the induction period, according to the order of copper tubes, stainless steel tubes and Ni-P electroless plating tubes, the fouling induction period is significantly prolonged, respectively 65 minutes, 110 minutes and 180 minutes, The fouling induction period of stainless steel tube and Ni-P electroless plated tube is 1.7 times and 2.8 times that of copper tube, respectively. In the fouling growth stage, the fouling rate of the copper tube is the largest, followed by the stainless steel tube, and the fouling rate of the Ni-P electroless plating tube is the smallest. The fo...

Embodiment example 2

[0077]The test system used in Example 2 is the same as Example 1, and the difference from Example 1 is that the types of test heat exchange tubes in the oil seal cooler test component 4 are stainless steel plain tubes and stainless steel plain tubes as the base tube formed by machining. The special-shaped twisted flat tube is used to measure the heat transfer coefficient in the tube of the sealed oil water cooler and test the simulation component. In this example, indirect fitting is used. First, the flow rate outside the tube is changed under the condition of the maximum flow rate in the tube, and the heat transfer outside the tube is fitted according to the power function. associative. Then change the flow rate in the tube under the condition of the maximum flow rate outside the tube, and calculate the total thermal resistance from the temperature of the inlet and outlet inside and outside the tube and the heat transfer. Deducting the heat transfer resistance outside the tub...

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Abstract

A visual test system for the heat transfer and anti-scaling performance of the oil sealing water cooler of the oil refining unit. With hot oil circulation system, the first differential pressure sensor is installed between the cold side inlet and the cold side outlet of the oil sealing water cooler, and the second pressure sensor is installed between the hot side inlet and hot side outlet of the oil sealing water cooler. Differential pressure sensor, a first pressure sensor and a first temperature sensor are installed on the pipeline at the inlet end of the cold side of the oil seal water cooler, a second pressure sensor and a second temperature sensor are installed on the pipeline at the hot side inlet end of the oil seal water cooler, and the oil seal The third temperature sensor is installed on the pipeline at the outlet end of the cold side of the water cooler, and the fourth temperature sensor is installed on the pipeline at the outlet end of the hot side of the oil-sealed water cooler. The connection between the heat exchange tube of the oil-sealed water cooler and the shell of the oil-sealed water cooler It is a connection structure that can be disassembled and replaced. The invention has high test data reliability and wide application range.

Description

technical field [0001] The invention relates to a visual testing system for an oil refinery. In particular, it relates to a visual test system for heat transfer and anti-scaling performance of an oil sealing water cooler in an oil refinery. Background technique [0002] Generally, hot oil pumps in oil refineries have sealing oil, which is injected into the friction pair of the sealing end face, thereby reducing the temperature of the mechanical seal end face. The pressure of the seal oil is slightly higher than the pressure of the medium in the pump. The seal oil is generally boosted by a special seal oil pump and distributed to the seal chamber of each pump in the pump room through pipelines. [0003] Sealing oil has four functions: cooling, flushing, lubricating, and sealing the end face, so that the mechanical seal can operate in a good working environment. The coking unit generally uses wax oil (light wax oil, heavy wax oil is the backup sealing oil) as sealing oil. Di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20G01N33/00
Inventor 黄卫东李涛孙全胜王元华郭拂娟李锐李洪涛徐鹏杨佩佩荆瑞静高丽岩张雅贤
Owner CHINA PETROLEUM & CHEM CORP
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