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A system and method for treating heavy oil wastewater and reusing power plant boilers

A technology for power station boilers and heavy oil wastewater, applied in water/sewage treatment, multi-stage water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of difficult to meet oil field production needs, high boiler blowdown rate, and heavy oil recovery Low rate and other problems, to achieve the effect of changing the structure of remaining organic matter, slowing down the rate of fouling and reducing the rate of fouling

Active Publication Date: 2016-08-24
XIAN THERMAL POWER RES INST CO LTD +2
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Problems solved by technology

Due to the low water quality of the steam injection boiler, the high blowdown rate of the boiler, the dryness of the steam generated is low, and the recovery rate of heavy oil is low, it is difficult to meet the production needs of the oil field

Method used

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  • A system and method for treating heavy oil wastewater and reusing power plant boilers
  • A system and method for treating heavy oil wastewater and reusing power plant boilers

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] see figure 1 The system for treating heavy oil wastewater and recycling power plant boilers of the present invention includes a heavy oil thermal recovery oil well 1, a heavy oil thermal recovery wastewater pool 2, a flash evaporator 3, a silicon removal reactor 4, a softening reactor 5, and a filter connected in sequence. 6. The outlet of the filter 6 is connected to the liquid inlet of the evaporator 7. The evaporator 7 adopts a falling film evaporator, and the outlet of the concentrated feed liquid of the evaporator 7 is connected to a crystallizer 15; agent inlet, and the condensed water outlet of the evaporator 7 is connected with the biological aerated filter 9, the advanced oxidation reactor 10, the ultrafilter 11 and the desalination device in sequence; , and the mixed ion exchanger 13 is connected with the utility boiler and the steam turbine...

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Abstract

The invention discloses a system and method of a power station boiler for treating and recycling heavy oil wastewater. The system comprises a heavy oil thermal recovery well, a silicon removal reactor and a softening reactor which are connected with one another in sequence, wherein the softening reactor is connected with a liquid inlet of an evaporator, a condensed water outlet of the evaporator is sequentially connected with a biological aerated filter and a desalting device, and a water producing outlet of the desalting device is connected with a power station boiler and steam turbine system; a silicon removal medicament dosing opening is formed in the silicon removal reactor, a softening medicament dosing opening is formed in the softening reactor, and a steam exhaust outlet of a steam turbine in the power station boiler and steam turbine system is connected with a heat source inlet of the evaporator; and a superheated steam outlet of the power station boiler in the power station boiler and steam turbine system is connected to the heavy oil thermal recovery well. By adopting the system disclosed by the invention, co-production of water, heat and electricity can be achieved, the heat energy can be effectively used, and the cycle thermal efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment and reuse, and in particular relates to a system and method for treating heavy oil wastewater and recycling a power station boiler. Background technique [0002] The development and production of China's oilfields has entered the middle and late stages. In order to maintain crude oil production, the thermal recovery technology of heavy oil has been proved to be the most effective recovery method to maintain crude oil production in the late stage of oilfields. However, the main difficulty restricting the popularization and application of this oil recovery technology lies in Effective treatment and reuse of high-temperature, high-salt and oily sewage. At present, coagulation sedimentation, DAF flotation and other processes are mainly used for heavy oil wastewater to remove oil. After oil removal, the waste water is softened by two-stage cationic resin, and the effluent is used as replen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/04C02F1/06C02F1/42C02F1/441C02F1/444C02F1/72C02F3/02C02F5/125C02F9/00
Inventor 王璟蒲平毛进杨宝红郭维忠李亚娟王正江许臻王金磊刘亚鹏
Owner XIAN THERMAL POWER RES INST CO LTD
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