CN102127465A - Low temperature dehydration process of thick oil - Google Patents
Low temperature dehydration process of thick oil Download PDFInfo
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- CN102127465A CN102127465A CN2011100309685A CN201110030968A CN102127465A CN 102127465 A CN102127465 A CN 102127465A CN 2011100309685 A CN2011100309685 A CN 2011100309685A CN 201110030968 A CN201110030968 A CN 201110030968A CN 102127465 A CN102127465 A CN 102127465A
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- viscous crude
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- ammonium chloride
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Abstract
The invention discloses a low temperature dehydration process of thick oil. Crude thick oil is introduced into a settling tank, a demulsifier is added, and ammonium chloride and sodium nitrite of which the total weight is three thousandths based on the crude oil are added simultaneously; the ammonium chloride and the sodium nitrite are subjected to chemical reaction in the settling tank to generate nitrogen which can allow the thick oil to be spongy so as to be easy to dehydrate, and heat which can allow the thick oil to be thermostatic simultaneously; the spongy thick oil is dehydrated and separated in the settling tank; and the dehydrated crude oil which meets the standard is output from the settling tank, heated and externally output. The low temperature dehydration process has the effects of energy saving and emission reduction.
Description
Technical field
The present invention relates to a kind of low temperature dewatering technology of viscous crude.
Background technology
The viscous crude that the Liaohe Oil Field produces is greater than 5,000,000 tons, this viscous crude (comprising special viscous crude and super viscous crude) poor properties, viscosity height, colloidal bitumen content height, dehydration difficulty.The crude oil temperature of viscous crude is between 60～65 ℃, the heavy oil dehydration of Liaohe Oil Field processing treatment scheme is at present: at first viscous crude is entered joint station and heat, temperature is reached more than 72 ℃, add emulsion splitter again, in slurry tank,, the moisture of former viscous crude reached below 5% through sedimentation in 70～80 hours, about output reheat to 80 ℃, again through the second time slurry tank carry out second section dehydration, make that viscous crude is moisture to be reached below 1.5%, heating at last is outer defeated.
But there is following problem in this technology:
Every day output viscous crude up to 12000～14000m3,80 ℃ of the temperature when 60～65 ℃ of the temperature of viscous crude when joint station enters the mouth are risen to outlet, so can produce a large amount of carbonic acid gas by required coal-fired 8.5～9.9 tons.This shows that dehydration not only needs chemical agent (emulsion splitter), wastes energy, the temperature that also needs simultaneously to be complementary with medicament could guarantee the moisture up to standard of outer output oil.
Summary of the invention
The object of the present invention is to provide a kind of low temperature dewatering technology of viscous crude, specifically be to come liquid to carry 60～65 ℃ of temperature and keeping just water to be deviate under this temperature conditions, do not need crude oil is heated to 80 ℃ of left sides, and only defeated outward to crude oil temperature raising up to standard, have advantage energy-conservation, that reduce discharging.
The low temperature dewatering technology of the viscous crude among the present invention, be when viscous crude crude oil feeds slurry tank, to add emulsion splitter, also add ammonium chloride and Sodium Nitrite that gross weight is a crude oil 3/1000ths simultaneously, chemical reaction takes place in described ammonium chloride and Sodium Nitrite in described slurry tank, reaction produces and can make viscous crude form the spongiform nitrogen of easy dehydration, produce simultaneously and can make viscous crude keep the homothermic heat, form the separation of dewatering in described slurry tank of spongiform viscous crude, reheat is defeated outward behind the crude oil output slurry tank after up to standard of dewatering.
Temperature when described viscous crude feeds slurry tank is 60～65 ℃.
The temperature of described viscous crude in described slurry tank remains between 57～62 ℃.
The time that described viscous crude stops in described slurry tank is 4-6 hour.
The weight ratio of described ammonium chloride and Sodium Nitrite is 1 to 1.
The low temperature dewatering technology of the viscous crude among the present invention has the effect of energy-saving and emission-reduction with respect to original technology.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment among the present invention is described further.
Viscous crude low temperature dewatering technology among the present invention, be with every day output comprehensive water cut up to 82～83%, temperature is viscous crude 12000～14000m of 60～65 ℃
3Directly deliver in the slurry tank, and before entering slurry tank, the crude oil of viscous crude adds dewatering agent: ammonium chloride and Sodium Nitrite, the dosing total amount of ammonium chloride and Sodium Nitrite is 3/1000ths (weight) that enter slurry tank crude oil total amount, add emulsion splitter simultaneously, between ammonium chloride and the Sodium Nitrite and ratio be weight ratio 1 to 1, ammonium chloride and Sodium Nitrite in slurry tank, take place chemical reaction: NH4Cl+NaNO2=NaCl+N2 ↑+H2O, produce a large amount of nitrogen and heat, wherein, heat is used to promote and keep the temperature of viscous crude in the slurry tank, the viscous crude temperature is remained between 57～62 ℃, and that a large amount of nitrogen that produce can make viscous crude form is spongy, promptly destroyed the isolating state that is difficult to that original viscous crude and water is consolidated, make the water in the viscous crude to come out by sharp separation, viscous crude just can come out water sepn in slurry tank in sedimentation 4-6 hour, and reached the standard of crude oil exporting, and is promptly moisture below 1.5%.To dewater at last crude oil output slurry tank after up to standard, reheat is defeated outward.
In sum, the viscous crude low temperature dewatering technology among the present invention and original technology relatively have the following advantages:
1, energy-conservation:
Specifically be original technology, every day liquid 12000～14000m
3, temperature raising is for the first time mentioned 72 ℃ from 60 ℃, and reality has promoted 12 ℃, and the content that comes water in the liquid that is to say 9960～11620m up to 82～83%
3Water also to promote 12 ℃ of temperature.That is to say that when promoting the viscous crude temperature be that the water that takes off has also promoted temperature, is that water promotes then 39.84～46.48 tons of the fire coals of having used of temperature more.Temperature raising for the second time is to rise to 85 ℃ from 72 ℃, about 8% surplus water is deviate from again.The surplus water of deviating from temperature raising second time process is 960～1120m
3, be 4.16～4.85 tons this time for the used fire coal of surplus water temperature raising.If with calorific value is the fire coal of 5000 kilocalories, heater efficiency is 60%, and twice temperature raising is that water temperature raising required coal-fired total amount every day is 44～51.33 tons so, sheerly wasted.
And the technology among the present invention is direct dehydration, again viscous crude is carried out temperature raising after dehydration, does not just need the water that takes off is carried out temperature raising, can save to be the required fire coal of water temperature raising.
2, reduce discharging
Can discharge stack gas 40～50 sides behind the per kilogram coal combustion, CO in every side's stack gas
2Content between 12～15%, that is to say that the joint station of present heavy oil dehydration technology will reduce discharging CO every year
211,169 ten thousand sides are nitrogen and the reaction of ammonium chloride and Sodium Nitrite produces among the present invention, not only can change the structure of viscous crude, even and enter air, can not produce pollution yet, its economic benefit and social benefit are remarkable especially.
Claims (5)
1. the low temperature dewatering technology of a viscous crude, it is characterized in that, when feeding slurry tank, viscous crude crude oil adds emulsion splitter, also add ammonium chloride and Sodium Nitrite that gross weight is a crude oil 3/1000ths simultaneously, chemical reaction takes place in described ammonium chloride and Sodium Nitrite in described slurry tank, reaction produces and can make viscous crude form the spongiform nitrogen of easy dehydration, produce simultaneously and can make viscous crude keep the homothermic heat, form the separation of dewatering in described slurry tank of spongiform viscous crude, reheat is defeated outward behind the crude oil output slurry tank after up to standard of dewatering.
2. according to the low temperature dewatering technology of the described viscous crude of claim 1, it is characterized in that the temperature when described viscous crude feeds slurry tank is 60～65 ℃.
3. according to the low temperature dewatering technology of the described viscous crude of claim 1, it is characterized in that the temperature of described viscous crude in described slurry tank remains between 57～62 ℃.
4. according to the low temperature dewatering technology of the described viscous crude of claim 1, it is characterized in that the time that described viscous crude stops is 4-6 hour in described slurry tank.
5. according to the low temperature dewatering technology of the described viscous crude of claim 1, it is characterized in that the weight ratio of described ammonium chloride and Sodium Nitrite is 1 to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110030968 CN102127465B (en) | 2011-01-28 | 2011-01-28 | Low temperature dehydration process of thick oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110030968 CN102127465B (en) | 2011-01-28 | 2011-01-28 | Low temperature dehydration process of thick oil |
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| CN102127465A true CN102127465A (en) | 2011-07-20 |
| CN102127465B CN102127465B (en) | 2013-09-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155168A (en) * | 2014-06-18 | 2014-11-19 | 中国石油天然气股份有限公司 | Laboratory preparation method of trace water contained thickened oil and trace thickened oil dehydrating instrument |
| CN104302739A (en) * | 2012-04-18 | 2015-01-21 | 通用电气公司 | A method to treat flushing liquor systems in coke plants |
| CN104449789A (en) * | 2014-10-16 | 2015-03-25 | 西安石油大学 | Low-temperature catalytic pyrolysis method for oil-containing sludge |
| CN106566653A (en) * | 2016-11-03 | 2017-04-19 | 山东龙大粮油有限公司 | Oil dewatering and drying method capable of reducing loss of volatile fragrant components in oil |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103131A (en) * | 1993-11-23 | 1995-05-31 | 吉林省油田管理局钻采工艺研究院 | Relieving tapping method of oil layer by heat of chemical formation |
| US5759409A (en) * | 1994-05-30 | 1998-06-02 | Basf Aktiengesellschaft | Separation of water from crude oil and oil demulsifiers used for this purpose |
| CN1687321A (en) * | 2005-04-26 | 2005-10-26 | 辽河石油勘探局 | Technological process of thermochemistry dehydrating for ultra thick oil |
| US20100140141A1 (en) * | 2008-12-10 | 2010-06-10 | Instituto Mexicano Del Petroleo | Demulsifying and dehydrating formulations for heavy crude oils based on block copolymers bifunctionalized with amines |
-
2011
- 2011-01-28 CN CN 201110030968 patent/CN102127465B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103131A (en) * | 1993-11-23 | 1995-05-31 | 吉林省油田管理局钻采工艺研究院 | Relieving tapping method of oil layer by heat of chemical formation |
| US5759409A (en) * | 1994-05-30 | 1998-06-02 | Basf Aktiengesellschaft | Separation of water from crude oil and oil demulsifiers used for this purpose |
| CN1687321A (en) * | 2005-04-26 | 2005-10-26 | 辽河石油勘探局 | Technological process of thermochemistry dehydrating for ultra thick oil |
| US20100140141A1 (en) * | 2008-12-10 | 2010-06-10 | Instituto Mexicano Del Petroleo | Demulsifying and dehydrating formulations for heavy crude oils based on block copolymers bifunctionalized with amines |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104302739A (en) * | 2012-04-18 | 2015-01-21 | 通用电气公司 | A method to treat flushing liquor systems in coke plants |
| CN104302739B (en) * | 2012-04-18 | 2016-06-29 | 通用电气公司 | The method of the flushing liquor system in process coke-oven plant |
| US10308532B2 (en) | 2012-04-18 | 2019-06-04 | Bl Technologies, Inc. | Method to treat flushing liquor systems in coke plants |
| CN104155168A (en) * | 2014-06-18 | 2014-11-19 | 中国石油天然气股份有限公司 | Laboratory preparation method of trace water contained thickened oil and trace thickened oil dehydrating instrument |
| CN104449789A (en) * | 2014-10-16 | 2015-03-25 | 西安石油大学 | Low-temperature catalytic pyrolysis method for oil-containing sludge |
| CN104449789B (en) * | 2014-10-16 | 2015-09-16 | 西安石油大学 | A kind of oily sludge low-temperature catalysis thermal decomposition method |
| CN106566653A (en) * | 2016-11-03 | 2017-04-19 | 山东龙大粮油有限公司 | Oil dewatering and drying method capable of reducing loss of volatile fragrant components in oil |
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| CN102127465B (en) | 2013-09-18 |
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