A method of treating ultra-heavy oil high-temperature sewage and recycling it to a thermal recovery boiler
A technology for high-temperature sewage and super-heavy oil, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., which can solve the problem of long process flow, poor use effect, and increased difficulty in sludge disposal. And other issues
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Embodiment 1
[0020] High-temperature sewage of ultra-heavy oil in an oilfield, sewage temperature 90°C, pH 8.5, salinity 4000mg / L, oil content 20000mg / L, suspended solid content 1000mg / L, hardness 80mg / L, silica content 250mg / L;
[0021] Processing steps:
[0022] 1) Add 50mg / L reverse phase demulsifier to super heavy oil high temperature sewage, reverse phase demulsifier is cationic polyether quaternary ammonium salt, 3.0G polyamide-amine mixture, the mixing ratio is 1:1, using metering pump, Wet dosing;
[0023] 2) Add 200mg / L high-efficiency purifying agent to the water in step 1), and react in a special swirling flow reactor. The reaction time is 45s. The high-efficiency purifying agent is a mixture of polyaluminum chloride and polyaluminum sulfate, and the mixing ratio is 2 : 1, using metering pumps, wet dosing;
[0024] 3) Add conditioning stabilizer 100mg / L to the water in step 2), react in a special swirl reactor, the reaction time is 47s, the conditioning stabilizer is a mixture...
Embodiment 2
[0028] High-temperature sewage of ultra-heavy oil in an oilfield, the sewage temperature is 85°C, pH is 7.5, salinity is 2000mg / L, oil content is 10000mg / L, suspended solid content is 500mg / L, hardness is 40mg / L, silica The content is 200mg / L;
[0029] Processing steps:
[0030] 1) Add 20mg / L reverse phase demulsifier to super heavy oil high temperature sewage; reverse phase demulsifier is 3.0G polyamide-amine, non-ionic polyether mixture, the mixing ratio is 2:1, using metering pump, wet method Dosing;
[0031] 2) Add 100mg / L high-efficiency purifying agent to the water in step 1), and react in a special cyclone reactor for a reaction time of 45s. The high-efficiency purifying agent is a mixture of polyaluminum sulfate and polysilicon aluminum chloride; the mixing ratio 1:1, using metering pumps, wet dosing;
[0032] 3) Add 50 mg / L conditioning stabilizer to the water in step 2), and react in a special cyclone reactor for 60 seconds. The conditioning stabilizer is a mixtur...
Embodiment 3
[0036] High-temperature sewage of ultra-heavy oil in an oil field, the sewage temperature is 90°C, pH is 8.0, salinity is 3000mg / L, oil content is 15000mg / L, suspended solid content is 800mg / L, hardness is 60mg / L, silica The content is 220mg / L;
[0037] Processing steps:
[0038] 1) Add 30mg / L reverse phase demulsifier to super heavy oil high temperature sewage; reverse phase demulsifier is cationic polyether quaternary ammonium salt, 3.0G polyamide-amine, nonionic polyether mixture, the mixing ratio is 1:2 : 1, using metering pumps, wet dosing;
[0039] 2) Add 150mg / L high-efficiency purifying agent to the water in step 1), and react in a special cyclone reactor with a reaction time of 48s. The high-efficiency purifying agent is a mixture of polyaluminum chloride, polyaluminum sulfate, and polysilicon aluminum chloride ;The mixing ratio is 1:1:1, using metering pumps, dosing by wet method;
[0040] 3) Add 80mg / L conditioning stabilizer to the water in step 2), and react in...
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