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CN105296006B - Prevent the method and apparatus of heavy petroleum asphalt matter coagulation - Google Patents

Prevent the method and apparatus of heavy petroleum asphalt matter coagulation Download PDF

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Publication number
CN105296006B
CN105296006B CN201410230909.6A CN201410230909A CN105296006B CN 105296006 B CN105296006 B CN 105296006B CN 201410230909 A CN201410230909 A CN 201410230909A CN 105296006 B CN105296006 B CN 105296006B
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value
point
colloid
heavy oil
asphalitine
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CN105296006A (en
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任强
周涵
代振宇
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Sinopec Research Institute of Petroleum Processing
China Petroleum and Chemical Corp
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Sinopec Research Institute of Petroleum Processing
China Petroleum and Chemical Corp
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Abstract

The method and apparatus of heavy petroleum asphalt matter coagulation is prevented the invention discloses a kind of, this method includes:Receive the mass content of saturation in the heavy oil point, fragrance point, colloid and asphalitine;According to the mass content of the saturation point, fragrance point, colloid and asphalitine, the stability index of the heavy oil is calculated;And be compared the stability index with a threshold value, and in the case where the stability index is less than the threshold value, control addition fragrance point, colloid or both is incorporated into the heavy oil.Pass through above-mentioned technical proposal, it can be judged whether to be likely to occur asphalitine coagulation according to the stability index of heavy oil, and in the case where being likely to occur asphalitine coagulation, control addition fragrance point, colloid or both is incorporated into the heavy oil, so as to prevent asphalitine coagulation.The present invention reduces substantial amounts of experiment, cost of labor and experimental cost are saved.

Description

Prevent the method and apparatus of heavy petroleum asphalt matter coagulation
Technical field
The present invention relates to petrochemical industry, in particular it relates to which a kind of prevent the method and apparatus of heavy petroleum asphalt matter coagulation.
Background technology
Deteriorated again as oil price rise, crude oil become, light-end products demand rises and heavy fuel oil demand declines, Processing heavy oil turns into the problem of oil refining industry must face solution.Heavy crude (viscous crude) is accounted in the crude resources of China At a relatively high ratio;In terms of whole world crude oil reserve, the mink cell focus such as heavy oil, oil-sand is also important potential energy source.With routine The increasingly depleted of crude resources, the increase of heavy crude yield, the processing of heavy oil seems particularly significant.And the coagulation of asphalitine, It is an important factor in order in heavy oil field, directly influences the processing of heavy oil, transport and storage.
Since nineteen twenty-four, people constantly have found and confirmed the behavioural characteristic of the colloidal solution of oil dispersion, enter One step recognizes that asphalitine is so be because which form colloidal solid, due to its pole as most unmanageable component in crude oil Property and complicated structure, it is had the trend of flocculation and precipitation during crude oil production and processing, thus to oil point Scattered system status is re-recognized, and is taken into account PETROLEUM PROCESSING and recovery process, for improve oil exploitation utilization rate and The distribution and quality for improving oil product have especially important meaning.Existing oil dispersion is thought, can pass through change Composition condition carrys out the state of regulation system, changes its mass transfer, heat-transfer character, and system is claimed in the state most beneficial for processing For the state of activation, therefore the state of activation is a particularly important state in processing of heavy oil, and this state, is had with the composition of heavy oil Great relation, composition is mismatched, and is easy for causing the aggregation of asphalitine, is influenceed its state of activation, because determining rational group Into, the preferable state of activation is made it have, the coagulation of asphalitine is not produced, is that heavy oil is being stored, must in transport and process The problem of must considering.
The content of the invention
The method and apparatus of heavy petroleum asphalt matter coagulation is prevented it is an object of the invention to provide a kind of, it can solve heavy oil in storage Deposit, transport and process studies on asphaltene easily sink collection the problem of.
To achieve these goals, the present invention provides a kind of method for preventing heavy petroleum asphalt matter coagulation, and this method includes:Connect Receive the mass content of saturation in the heavy oil point, fragrance point, colloid and asphalitine;According to the saturation point, fragrance point, colloid And the mass content of asphalitine, calculate the stability index of the heavy oil;And carry out the stability index and a threshold value Compare, and in the case where the stability index is less than the threshold value, control adds being incorporated into for fragrance point, colloid or both The heavy oil.
Correspondingly, the present invention also provides a kind of equipment for preventing heavy petroleum asphalt matter coagulation, and the equipment includes:Reception device, For receiving the saturation in the heavy oil point, fragrance point, colloid and the mass content of asphalitine;Computing device, for according to institute The mass content of saturation point, fragrance point, colloid and asphalitine is stated, the stability index of the heavy oil is calculated;And control device, For the stability index to be compared with a threshold value, and in the case where the stability index is less than the threshold value, Control addition fragrance point, colloid or both is incorporated into the heavy oil.
By above-mentioned technical proposal, it can be judged whether to be likely to occur asphalitine coagulation according to the stability index of heavy oil, And in the case where being likely to occur asphalitine coagulation, control addition fragrance point, colloid or both is incorporated into the heavy oil, so that Prevent asphalitine coagulation.The present invention reduces substantial amounts of experiment, cost of labor and experimental cost are saved.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with following tool Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
What Fig. 1 present invention was provided prevents the method flow diagram of heavy petroleum asphalt matter coagulation.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
What Fig. 1 present invention was provided prevents the method flow diagram of heavy petroleum asphalt matter coagulation.As shown in figure 1, the invention provides A kind of method for preventing heavy petroleum asphalt matter coagulation, this method includes:Receive saturation in the heavy oil point, fragrance point, colloid and The mass content of asphalitine;According to the mass content of the saturation point, fragrance point, colloid and asphalitine, the heavy oil is calculated Stability index;And by the stability index and a threshold value (threshold value can be calculated by simulating furol viscosity curve and obtained, Wherein the flex point of viscograph just can be used as threshold value) it is compared, and it is less than the situation of the threshold value in the stability index Under, control addition fragrance point, colloid or both is incorporated into the heavy oil.Thereby, it can be sentenced according to the stability index of heavy oil It is disconnected whether to be likely to occur asphalitine coagulation, and in the case where being likely to occur asphalitine coagulation, control add fragrance point, colloid or Both is incorporated into the heavy oil, so as to prevent asphalitine coagulation.
Wherein, the control adds the sustainable the step of being incorporated into the heavy oil of fragrance point, colloid or both and carried out, directly It is more than or equal to the threshold position to the stability index.The stability index is calculated by below equation (1):
Formula (1)
SI=3.90 × (ramp (A-x1))2-4.16x2+19.61x2x3-19.14×(ramp(x2-B))2+1.19× ramp(C-x4)+0.18
Wherein, SI is stability index;A, B, C are the coefficient of stability;X1 is saturation point mass fraction, and x2 is fragrant sub-prime amount Fraction, x3 is colloid mass fraction, and x4 is asphalitine mass fraction;Ramp is spline function.In the present invention, saturation sub-prime amount Fraction, fragrance point mass fraction, colloid mass fraction and asphalitine mass fraction are hundred on the basis of the gross weight of heavy oil Divide weight fraction.
Preferably, the value of the A is 0.521~0.783, and the value of the B is 0.252~0.378, and the C's takes It is worth for 0.252~0.367, the value of the threshold value is 0.361~0.691.
Preferably, the value of the A is 0.617~0.689, and the value of the B is 0.277~0.299, and the C's takes It is worth for 0.252~0.367, the value of the threshold value is 0.391~0.551.
Preferably, the value of the A is 0.671, and the value of the B is 0.291, and the value of the C is 0.271, described The value of threshold value is 0.451.
Correspondingly, the present invention also provides a kind of equipment for preventing heavy petroleum asphalt matter coagulation, and the equipment includes:Reception device, For receiving the saturation in the heavy oil point, fragrance point, colloid and the mass content of asphalitine;Computing device, for according to institute The mass content of saturation point, fragrance point, colloid and asphalitine is stated, the stability index of the heavy oil is calculated;And control device, For the stability index to be compared with a threshold value, and in the case where the stability index is less than the threshold value, Control addition fragrance point, colloid or both is incorporated into the heavy oil.About the detail and benefit of the equipment, with above-mentioned side Method is similar, is repeated no more in this.
The invention will be further described by the following examples.
Embodiment 1
The present embodiment is used for the method for preventing heavy petroleum asphalt matter coagulation for illustrating that the present invention is provided, and is carried in the present invention Prevent from implementing in the equipment of heavy petroleum asphalt matter coagulation described in supplying.
A certain amount of blending heavy oil certainly is taken, is learnt by detection and analysis, the total content of saturation point is 0.8 weight in the heavy oil % is measured, the total content of fragrance point is 0.1 weight %, and the content of colloid is 0.05 weight %, and the content of asphalitine is 0.05 weight Measure %.
By the saturation of the heavy oil point mass fraction, fragrance point mass fraction, colloid mass fraction and asphalitine mass fraction By the way that in the reception device input computing device of the equipment, the stability index SI of the heavy oil is calculated according to above-mentioned formula (1), In formula (1), A, B and C value are as shown in table 1 below, and the stability index SI that the heavy oil is learnt by calculating is 0.22.
By comparing, the stability index SI of the heavy oil is less than threshold values.Then, it is a part of heavy oil is quiet at room temperature Put 8 hours, the heavy oil that makes discovery from observation has sedimentation to assemble;Meanwhile, in control device, virtue is added into another part heavy oil Perfume point and colloid, until the stability index SI of the heavy oil reaches 0.42, then wherein add fragrance point by what is finally given 8 hours are stood at room temperature with the heavy oil of colloid, and the heavy oil that makes discovery from observation does not settle aggregation.
Can be seen that by the embodiment can effectively prevent heavy petroleum asphalt matter from gathering according to method of the present invention It is heavy.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally The thought of invention, it should equally be considered as content disclosed in this invention.

Claims (6)

1. a kind of method for preventing heavy petroleum asphalt matter coagulation, it is characterised in that this method includes:
Receive the mass content of saturation in the heavy oil point, fragrance point, colloid and asphalitine;
According to the mass content of the saturation point, fragrance point, colloid and asphalitine, the stability index of the heavy oil is calculated;With And
The stability index is compared with a threshold value, and in the case where the stability index is less than the threshold value, Control addition fragrance point, colloid or both is incorporated into the heavy oil;
The stability index calculation formula is:
SI=3.90 × (ramp (A-x1))2-4.16x2+19.61x2x3-19.14×(ramp(x2-B))2+1.19×ramp (C-x4)+0.18
Wherein, SI is stability index;A, B, C are the coefficient of stability;X1 is saturation point mass fraction, and x2 is fragrant sub-prime amount point Number, x3 is colloid mass fraction, and x4 is asphalitine mass fraction;Ramp is spline function;
Wherein, the value of the A is 0.521~0.783, and the value of the B is 0.252~0.378, and the value of the C is 0.252~0.367, the value of the threshold value is 0.361~0.691.
2. according to the method described in claim 1, it is characterised in that the value of the A is 0.617~0.689, and the B's takes It is worth for 0.277~0.299, the value of the C is 0.252~0.367, the value of the threshold value is 0.391~0.551.
3. according to the method described in claim 1, it is characterised in that the value of the A is 0.671, the value of the B is 0.291, the C value are 0.271, and the value of the threshold value is 0.451.
4. a kind of equipment for preventing heavy petroleum asphalt matter coagulation, it is characterised in that the equipment includes:
Reception device, for receiving the saturation in the heavy oil point, fragrance point, colloid and the mass content of asphalitine;
Computing device, for the mass content according to the saturation point, fragrance point, colloid and asphalitine, calculates the heavy oil Stability index;And
Control device, for the stability index to be compared with a threshold value, and in the stability index less than described In the case of threshold value, control addition fragrance point, colloid or both is incorporated into the heavy oil;
The stability index calculation formula is:
SI=3.90 × (ramp (A-x1)) 2-4.16x2+19.61x2x3-19.14 × (ramp (x2-B)) 2+1.19 × ramp (C-x4)+0.18
Wherein, SI is stability index;A, B, C are the coefficient of stability;X1 is saturation point mass fraction, and x2 is fragrant sub-prime amount point Number, x3 is colloid mass fraction, and x4 is asphalitine mass fraction;Ramp is spline function;
Wherein, the value of the A is 0.521~0.783, and the value of the B is 0.252~0.378, and the value of the C is 0.252~0.367, the value of the threshold value is 0.361~0.691.
5. equipment according to claim 4, it is characterised in that the value of the A is 0.617~0.689, and the B's takes It is worth for 0.277~0.299, the value of the C is 0.252~0.367, the value of the threshold value is 0.391~0.551.
6. equipment according to claim 4, it is characterised in that the value of the A is 0.671, the value of the B is 0.291, the C value are 0.271, and the value of the threshold value is 0.451.
CN201410230909.6A 2014-05-28 2014-05-28 Prevent the method and apparatus of heavy petroleum asphalt matter coagulation Active CN105296006B (en)

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CN105296006B true CN105296006B (en) 2017-09-29

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* Cited by examiner, † Cited by third party
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US9377450B2 (en) * 2012-06-22 2016-06-28 Baker Hughes Incorporated Process for predicting the stability of crude oil and employing same in transporting and/or refining the crude oil

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