A super high pressure heat exchange system

Abstract

The invention discloses an ultra-high pressure heat exchange system. The heat exchange system includes an electric heater and a printed plate heat exchanger; the electric heater communicates with the printed plate heat exchanger through a heat medium circulation pipeline to form a closed loop; the heat medium circulation pipeline is provided with a heat medium circulation Pump, heat medium thermometer and shut-off valve, the heat medium circulating pump is close to the inlet of the electric heater, and the heat medium thermometer is close to the outlet of the electric heater; both ends of the printed plate heat exchanger are also connected to the high-pressure and low-temperature pipelines through natural gas pipelines. Natural gas and gas injection wells; a natural gas inlet thermometer is installed at the inlet of the natural gas pipeline, and a natural gas outlet thermometer is installed at the outlet of the natural gas pipeline. The ultra-high pressure gas heat exchange system of the present invention has strong pressure bearing capacity, high safety and reliability; the heat exchanger is small in weight and occupies a small area; by adjusting different gears of the electric heater, the heating system can provide different Heat load, to meet the heating demand at different gas injection volumes.

Description

technical field [0001] The invention relates to an ultra-high pressure heat exchange system, which belongs to the technical field of high-pressure gas heat exchange on offshore oil and gas production platforms. Background technique [0002] The development of the offshore buried hill condensate gas field adopts the cycle gas injection development mode, and the gas injection pressure is as high as 500bar. It is necessary to configure an ultra-high pressure gas injection compressor to pressurize the gas. Since the gas injection compressors are concentrated on the gas injection platform, it is necessary to transport the high-pressure reinjection gas to the surrounding wellhead platforms through the high-pressure gas injection pipeline. After long-distance transportation, the temperature of high-pressure reinjection gas reaching the wellhead is lower than the minimum temperature requirement for wellhead gas injection, so the high-pressure reinjection gas needs to be heated befor...

AI Technical Summary

Problems solved by technology

The design pressure of electric heaters commonly used on offshore platforms is within 100bar, and the maximum pressure of electric heaters with existing application records is only about 300bar, which is difficult to meet the heating needs of high-pressure gas injection

[0003] According to the existing application experience in the field of marine engineering, there is no such high-voltage electric heater used for direct heating of natural gas, and considering the difficulty and risk of design and manufacture of pressure-bearing shells, it is not suitable to use electric heaters for direct heating

Images