High salt gas field water evaporation crystallization treatment device

Abstract

The invention provides a high salt gas field water evaporation crystallization treatment device which comprises a power system, a preheating system, a degassing system, an evaporation condensation system, a vapor compression system, an evaporation crystallization system, a condensate recycling system, a crystallization and salt making system, a vapor generation system and a waste heat recovery system; the power system comprises a gas engine, a power generator and a power supply and distribution mechanism; the preheating system comprises a first preheater, a second preheater and a third preheater; the degassing system comprises a degassing tank and a vacuum pump; the evaporation condensation system comprises a concentrated liquid circulation pump, a falling film evaporator and a gas-liquidseparator; the vapor compression system comprises a motor, a compressor and a sprinkler; the evaporation crystallization system comprises a crystallizer, a halide solution circulation pump, a forced circulation evaporator and a vapor ejector; the condensate recycling system comprises a purification water tank and a purification water pump; the crystallization and salt making system comprises a thickener, a centrifuge, a mother liquor tank, a mother liquor pump and a drying bed; and the vapor generation system comprises a water feeding pump and a waste heat boiler.

Description

technical field [0001] The invention relates to the field of high-salt gas field water treatment, in particular to an evaporation and crystallization treatment device for high-salt gas field water. Background technique [0002] The produced water produced during the exploitation of oil and gas fields has complex components and is difficult to treat. If it is directly discharged, it will cause serious environmental pollution and ecological damage. The existing technology has not yet formed an efficient solution for the treatment of gas field produced water. The actual design scheme mostly uses independent boilers and evaporation treatment modules, and the coupling between the modules is poor. The entire device occupies a large area, the overall investment is high, and there are many maintenance personnel , high operating costs. Contents of the invention [0003] In view of the problems in the background technology, the object of the present invention is to provide a high-s...

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Problems solved by technology

[0002] The produced water produced in the process of oil and gas field production has complex components and is difficult to treat. If it is directly discharged, it will cause serious environmental pollution and ecological damage.

The existing technology has not yet formed an efficient solution for the treatment of gas field produced water. The actual design scheme mostly uses independent boilers and evaporation treatment modules, and the coupling between the modules is poor. The entire device occupies a large area, the overall investment is high, and there are many maintenance personnel , high operating cost

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