Process for comprehensively recovering heat energy and exchanging heat

Abstract

The invention provides a process for comprehensively recovering heat energy and exchanging heat. The process comprises five steps, namely, the step of recovering condensed water, the step of filtering for the first time, the step of softening, the step of filtering for the second time, and the step of reusing. The process is simple in steps, and convenient to operate and control; the comprehensive recycling rate of condensed water and condensed water afterheat can be effectively improved, and moreover, the quality of the condensed water can be effectively improved, thus the recycling efficiency and safety of the condensed water can be improved, and as a result, the purposes of reducing the comprehensive utilization rate of the energy of a heating system and reducing the risk of failure of the heating system due to water scale and other reasons can be achieved.

Description

technical field [0001] The invention relates to a heat exchange process for comprehensive recovery of heat energy, which belongs to the technical field of waste heat recovery and utilization process. Background technique [0002] At present, in the process of oil production, it is necessary to use a large amount of high-temperature water vapor to heat various pipes, tanks and other equipment. After the heating operation is completed, the high-temperature steam is often condensed from a vapor state to a liquid, thereby producing a large amount of oil with a relatively high temperature. High-temperature condensed water, because these condensed waters contain a large amount of heat energy resources on the one hand, and on the other hand, water resources also need to be fully recycled. After performing one-stage or multi-stage heat exchange, it is reintroduced into the steam boiler, so as to achieve the purpose of recycling the condensed water itself and waste heat. However, in ...

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Problems solved by technology

[0002] At present, in the process of oil production, it is necessary to use a large amount of high-temperature water vapor to heat various pipes, tanks and other equipment. After the heating operation is completed, the high-temperature steam is often condensed from a vapor state to a liquid, thereby producing a large amount of oil with a relatively high temperature. High-temperature condensed water, because these condensed waters contain a large amount of heat energy resources on the one hand, and on the other hand, water resources also need to be fully recycled. After performing one-stage or multi-stage heat exchange, it is reintroduced into the steam boiler, so as to achieve the purpose of recycling the condensed water itself and waste heat. However, in actual work, it is found that the comprehensive utilization rate of heat energy by traditional heat exchange methods is often low. At the same time, it will also lead to insufficient waste heat when the condensed water enters the steam boiler, which will cause steam filtration to consume more fuel to heat it. At the same time, the traditional condensed water treatment method will also cause dissolved or suspended inorganic substances in the condensed water. Salt and solid particle pollutants falling from the inner wall of the pipeline and suspended in the condensed water directly circulate into the steam boiler system and heating system, thus posing a great threat to the stability of equipment operation. Therefore, in view of this situation, It is necessary to develop a new comprehensive heat energy recovery process to meet the needs of actual use

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