Industrial sewage heat energy replacement device

Abstract

An industrial wastewater heat energy exchange device comprises a heat storage tank, a heat pump and a heat dissipation box. The lower part of the heat storage tank is connected with a water inlet pipe, the upper part of the heat storage tank is connected with a water outlet pipe, the interior of the heat storage tank is provided with snakelike heat exchange tubes spirally, and the outside of the heat storage tank is subjected to insulation treatment; the water inlet pipe and the water outlet pipe are respectively provided with a pressure gage, a temperature sensor and an electrically operated valve; a flowmeter is also arranged on the water inlet pipe; multiple overlaid heat dissipation fins and heat dissipation pipes crossed circuitously between the multiple heat dissipation fins are arranged in the heat dissipation box; the bottom of the heat dissipation box is provided with a heat dissipation air pipe, multiple heat dissipation air inlets are uniformly distributed in the heat dissipation air pipe, a hot air hole is formed in the top of the heat dissipation box, and the heat dissipation air pipes are connected with a fan; the snakelike heat exchange tubes in the heat storage tank and the heat dissipation pipes in the heat dissipation box are connected through a heat pump and a circulation pipeline to form a circulation system; a pressure sensor and a relief valve are arranged on the circulation pipeline. By applying the industrial wastewater heat energy exchange device, the corrosion and scaling of sewage storage and transportation facilities are retarded, the exchanged heat energy is used for civil building heating, warming of ecological agriculture and breeding bases and the like, and heat energy resource recycling is realized.

Description

technical field [0001] The invention relates to the field of industrial sewage heat energy utilization devices, in particular to a device and method for oilfield sewage heat energy replacement and utilization. Background technique [0002] The sewage produced in the oil field comes from 1000-5000m underground, and flows to the ground together with crude oil: it is transported to the metering station and the joint station in turn through metal pipelines for metering and separation of oil and water. Then the crude oil is transported to the refinery, and the sewage is transported back to the water injection pump station through the pipeline, and injected into the oil layer through the water injection well to supplement the energy of the oil layer. The temperature of the sewage produced in the oil field is relatively high, generally between 60°C and 100°C; the salinity is also high, generally between 2000 and 300,000 mg / L; the delivery pressure of the sewage is between 0.5MPa an...

AI Technical Summary

Problems solved by technology

High-temperature sewage not only wastes heat energy, but also causes pipeline corrosion and scaling when flowing in metal pipelines. A large amount of pipeline maintenance and replacement funds are required every year due to pipeline scaling and corrosion.

At present, due to high temperature, high pressure, high salinity and no mature heat energy replacement device and method for oilfield sewage, a large amount of heat energy is wasted

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