Indoor experiment device for high-temperature scaling of crude oil heat exchanger

Abstract

The invention discloses an indoor experimental device for high-temperature scaling of a crude oil heat exchanger, and belongs to the technical field of oil-gas storage and transportation engineering.The device comprises a high-temperature medium circulating system, a scaling simulation system, a cooling system and a data measuring and processing system, a high-temperature medium in the high-temperature medium circulating system circulates in the scaling pipe, the scaling pipe is immersed in crude oil, and meanwhile, the temperature of the crude oil is adjusted through the cooling system to simulate an actual environment; a temperature measuring device is arranged at a preset part; measured temperature data is sent to the processor for processing; and the change of the heat transfer property of the high-temperature medium and the measurement of the scaling rate are observed along with the prolonging of the heating time, therefore, the scaling trend, the scaling speed and influence factors of the crude oil under specific working conditions are judged, a theoretical basis is provided for research, reference is provided for actual production operation, corresponding measures can be taken in a targeted mode when necessary, scaling of the crude oil heat exchanger is reduced or prevented, and safe and efficient operation of the heat exchanger is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of oil and gas storage and transportation engineering, and in particular relates to an indoor experimental device for high-temperature fouling of a crude oil heat exchanger. Background technique [0002] Dirt refers to the dirt layer formed when the unclean fluid contacts the heat transfer surface, and solid substances gradually accumulate on the heat transfer surface. In the case of fouling in crude oil heat exchangers, fouling is the combined result of chemical reactions and physical changes in crude oil due to the high metal surface temperatures within the heat exchanger. Heat exchanger fouling will bring the following adverse effects: (1) increase thermal resistance, weaken heat transfer, and increase energy consumption; (2) dirt reduces pipeline transportation capacity and reduces output; (3) fluid resistance increases, power energy (4) It needs to stop frequently for cleaning, so that the production c...

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Problems solved by technology

However, most oil fields use cold / hot crude oil, crude oil / heat medium oil heat exchange methods. With the extension of heating time, the properties of heat medium oil will change to a certain extent, so the electric heating tube heating method is not representative of the field. sex and persuasion

At the same time, the loop-type fouling experimental device has relatively high requirements for pumps and various measuring instruments, is expensive, the circuit is complicated and difficult to operate and clean, and the experimental process requires a large amount of crude oil; The processing and manufacturing process has high requirements and is not easy to maintain

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