CN101328442B - Gas delivery pipeline drag reducer and preparation thereof - Google Patents
Gas delivery pipeline drag reducer and preparation thereof Download PDFInfo
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- CN101328442B CN101328442B CN2007101190982A CN200710119098A CN101328442B CN 101328442 B CN101328442 B CN 101328442B CN 2007101190982 A CN2007101190982 A CN 2007101190982A CN 200710119098 A CN200710119098 A CN 200710119098A CN 101328442 B CN101328442 B CN 101328442B
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Abstract
The invention relates to a gas conveying pipeline drag reducer used in gas and particularly natural gas conveying pipeline drag reduction and a preparation method thereof, relating to a macromolecular compound composition and the pipeline system technical field. The gas conveying pipeline drag reducer is characterized in that: the drag reducer consists of pyridine, secondary amine, formaldehyde or acetaldehyde, aromatic acid and deionized water; base on a 100-percent total weight, the compositions in percentage by weight include: 10 to 20 percent of the pyridine, 20.4 to 28.4 percent of the secondary amine, 7.6 to 8.4 percent of the formaldehyde or the acetaldehyde, 37 to 38.4 percent of the aromatic acid and 13 to 15 percent of the deionized water. The preparation method comprises the following steps that: the pyridine and the secondary amine in proportional quantities are added in a container and are mixed evenly; the formaldehyde or the acetaldehyde in proportional quantity is dripped to carry out reaction; the aromatic acid in proportional quantity is added, and the deionized water in proportional quantity is dripped so as to carry out reaction continuously; and finally, redundant water is removed, and a target product is obtained after purification. The gas conveying pipeline drag reducer has direct source of raw materials; moreover, the preparation method has simple process, convenient operation and moderate reaction conditions, and a product prepared by the method has excellent drag reduction effect.
Description
Technical field
The present invention is particularly a kind of gas delivery pipeline drag reducer and preparation method thereof of natural-gas transfer pipeline drag reduction of gas.The composition and the tubing system technical field that relate to macromolecular compound.
Background technology
The utilization of natural gas energy resource is one of important directions that develops both at home and abroad at present.Because the whole world is to the requirement of sustainable economic development with to the call of " clear energy sources ", the demand of Sweet natural gas grows with each passing day.
At present, the main mode of transport of Sweet natural gas is a pipe-line transportation.Gas pipe line on the Modern Significance has nearly 120 years developing history.When gas stream during through pipeline, roughness can cause friction and then produce air whirl, cause power loss, thereby cause the pressure-losses of pipeline.The natural gas line that is in turbulent state is carried, and the tube wall roughness has the greatest impact to frictional coefficient, increase throughput rate and must reduce the tube wall roughness.In recent years, natural gas line carries Research of Drag Reduction to obtain bigger progress, and with regard to present result of study, drag reduction method roughly can reduce: natural gas line undercoat drag reduction technology and flow improver drag reduction technology.
As everyone knows, the same with drag reducer for crude oil, the application of Sweet natural gas flow improver can significantly increase the power consumption of throughput rate, reduction compressor, the installation power of minimizing compressor, save compressed station number, the economic benefit of being brought is huge, and good needs of production and market outlook are arranged.But the Sweet natural gas flow improver is different from commercial liquid (as oil) flow improver.A kind of liquid drag reducer, the flow improver that for example is used in the TransAlaska crude oil pipeline is typical long chain polymer, the liquid phase that circulates this polymkeric substance reduces the eddy current in the liquid, its molecular weight is 1,000,000 orders of magnitude, and liquid drag reducer is extended to the center turbulent area to laminar sub-layer from inner surface of pipeline.Its service area at laminar flow and turbulent at the interface.And the molecular weight of Sweet natural gas flow improver can not be very big, because this considers its atomizing ability and and its " filling " ability of " trench " on tube wall.And the zone of action of Sweet natural gas flow improver is not at laminar flow and turbulent at the interface, it is to directly act on inner surface of pipeline, the turbulence that flow improver molecule and metallic surface are combined together to form securely is one smooth, flexible surface relaxes the gas-solid interface place, reduce the friction between fluid and the tube wall, promptly directly reduce the inner surface of pipeline roughness, thereby reach the drag reduction effect, it does not change fluidic character.At patent US4958653, all mentioned out the method for in gas pipeline, using the flow improver drag reduction among the US5020561.As having proposed in gas pipeline, to use the method for flow improver drag reduction in the US5020561 patent, this flow improver is the material that is similar to inhibiter, lubricant and so on, for example: carbonatoms be in the lipid acid between 18～54, oxyalkylated fatty acid amine and or acid amides, the molecular weight of its long chain hydrocarbon approximately from 300 to 900.The condition that some natural crude oil also meets flow improver is also proposed in this invention, this natural crude oil is by bituminous matter, resin and long chain alkane (C1～C40) form, also contain minor N, S, O, Fe and V, these heteroatomss concentrate on the macromolecule part mostly as the bituminous matter part, make bituminous matter have polarity.Though but the material that this patent has proposed to use the method for flow improver drag reduction in gas pipeline and proposed some flow improvers, the drag-reduction effect of these materials is limited, and nonideal flow improver.
Summary of the invention
The objective of the invention is to invent a kind of gas delivery pipeline drag reducer that a kind of raw material sources are direct, simple to operate, reaction conditions is gentle and preparation method thereof.
The present invention's gas delivery pipeline drag reducer is made up of pyridine, secondary amine, formaldehyde or acetaldehyde, aromatic acid, deionized water, in gross weight is in 100, pyridine accounts for 12～20%, secondary amine accounts for 20.4～28.4%, formaldehyde or acetaldehyde account for 7.6～8.4%, aromatic acid accounts for 37～38.4%, and deionized water accounts for 13～15%.
Wherein secondary amine is dimethyl amine, Di-n-Butyl Amine, Diisopropylamine or dicyclohexyl amine; Aromatic acid is phenylformic acid, cresotinic acid or Whitfield's ointment.
The present invention's preparation method is:
With the pyridine and the secondary amine of amount join in the container and mixes in proportion; Drip the formaldehyde or the acetaldehyde reaction of proportional; The aromatic acid of additional proportion amount, the deionized water that drips proportional simultaneously continues reaction; Remove excessive moisture, purify target product.
The pyridine and the secondary amine of amount are in proportion joined in the container and mixes, stirred 15 minutes;
In temperature of reaction is under 30～45 ℃ of conditions, and the formaldehyde or the acetaldehyde that drip proportional reacted 1～2 hour;
The aromatic acid of additional proportion amount drips the deionized water of proportional simultaneously, reacts 3～4 hours;
Remove excessive moisture, purify target product.
The principle of institute of the present invention foundation: utilize special macromolecular cpd with the similar constructional feature of tensio-active agent or polymkeric substance, its polar end is bonded in the tube metal internal surface securely, and the slick film of formation one deck, and non-polar end is present in and forms gas-solid interface between fluid and the inner surface of pipeline, the specific molecule structure of utilizing film to have, the rapids energy of absorption fluids and internal surface intersection, thereby reduce the energy that is consumed in internal surface, the rapids that absorbs can spill in the fluid again subsequently, thereby reduce the disorderly degree of turbulent, reach the drag reduction purpose.
Therefore raw material sources of the present invention are direct, and preparation method's technology is simple, and is easy to operate, the reaction conditions gentleness, and the product drag-reduction effect is good.
Description of drawings
The former steel disc of Fig. 1 surface
Fig. 2 film forming rear surface
Fig. 3 film forming trailing flank (the right is artificial friction)
Fig. 4 film forming trailing flank (the right is artificial friction)
Embodiment
With following three embodiment the specific embodiment of the present invention is described, the umber described in the embodiment all is meant molfraction.
Embodiment 1
Get 10 parts of pyridines and 8 portions of Diisopropylamines join in the there-necked flask, stir 15min, in temperature of reaction is under 35 ℃ of conditions, 10 parts of formaldehyde solutions are joined in the mixed solution reaction 1 hour, in above-mentioned solution, add 12 parts of phenylformic acid, drip 60～75ml deionized water simultaneously, stirring reaction 3～4 hours, anhydrate purify product.
Embodiment 2
Get 10 parts of pyridines and 10 portions of Diisopropylamines join in the there-necked flask, stir 15min, in temperature of reaction is under 40 ℃ of conditions, 15 parts of formaldehyde solutions are joined in the mixed solution reaction 1 hour, in above-mentioned solution, add 15 parts of phenylformic acid, drip 60～75ml deionized water simultaneously, stirring reaction 3～4 hours, anhydrate purify product.
Embodiment 3
Get 10 parts of pyridines and 15 portions of Diisopropylamines join in the there-necked flask, stir 15min, in temperature of reaction is under 36 ℃ of conditions, 15 parts of formaldehyde solutions are joined in the mixed solution reaction 1 hour, in above-mentioned solution, add 15 parts of phenylformic acid, drip 60～75ml deionized water simultaneously, stirring reaction 3～4 hours, anhydrate purify product.
The product of the foregoing description is carried out to membrane process and electronic microscope photos, result such as Fig. 1～shown in Figure 4.
A certain amount of this product is dissolved in an amount of dehydrated alcohol, and steel disc is handled (oil removing, rust cleaning, the polishing of usefulness metallographic paper), with spraying plant above-mentioned solution is sprayed on the steel disc of handling.On JEDL JSM-6700F scanning electronic microscope, carry out microscopic analysis.
By more as can be seen, the roughness on steel disc surface has obtained obvious improvement.Because contain strong adsorptivity functional group in its structure, this compound has good resistance reducing performance.
From the foregoing description as seen, raw material sources of the present invention are direct, and the preparation method is simple, and is easy to operate, the reaction conditions gentleness, and the product drag-reduction effect is good.
Claims (5)
1. gas delivery pipeline drag reducer, it is characterized in that forming by pyridine, secondary amine, formaldehyde or acetaldehyde, aromatic acid, deionized water, in gross weight is in 100, pyridine accounts for 12～20%, secondary amine accounts for 20.4～28.4%, formaldehyde or acetaldehyde account for 7.6～8.4%, and aromatic acid accounts for 37～38.4%, and deionized water accounts for 13～15%.
2. a kind of gas delivery pipeline drag reducer according to claim 1 is characterized in that described secondary amine is dimethyl amine, Di-n-Butyl Amine, Diisopropylamine or dicyclohexyl amine.
3. a kind of gas delivery pipeline drag reducer according to claim 1 is characterized in that described aromatic acid is phenylformic acid, cresotinic acid or Whitfield's ointment.
4. the preparation method of the described gas delivery pipeline drag reducer of claim 1 is characterized in that with gross weight being to account for 12～20% pyridine in 100 and account for 20.4～28.4% secondary amine to join in the container and mix; The formaldehyde of dropping 7.6～8.4% or acetaldehyde reaction; Add 37～38.4% aromatic acid, drip 13～15% deionized water simultaneously and continue reaction; Remove excessive moisture, purify target product.
5. according to the described a kind of gas delivery pipeline drag reducer preparation method of claim 4, it is characterized in that the pyridine of amount in proportion and secondary amine join in the container to mix, stirred 15 minutes; In temperature of reaction is under 30～45 ℃ of conditions, and the formaldehyde or the acetaldehyde that drip proportional reacted 1～2 hour; The aromatic acid of additional proportion amount drips the deionized water of proportional simultaneously, reacts 3～4 hours; Remove excessive moisture, purify target product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101190982A CN101328442B (en) | 2007-06-20 | 2007-06-20 | Gas delivery pipeline drag reducer and preparation thereof |
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| CN2007101190982A CN101328442B (en) | 2007-06-20 | 2007-06-20 | Gas delivery pipeline drag reducer and preparation thereof |
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| CN101328442A CN101328442A (en) | 2008-12-24 |
| CN101328442B true CN101328442B (en) | 2010-06-02 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838606B (en) * | 2012-09-18 | 2015-07-29 | 中国石油天然气股份有限公司 | A kind of alkylated porphyrin compounds natural gas line corrosion inhibition type drag reducer and preparation method thereof |
| CN104629359A (en) * | 2013-11-08 | 2015-05-20 | 中国石油天然气股份有限公司 | Mercapto-triazole gas pipeline drag reducer and preparation method thereof |
| CN104629050B (en) * | 2013-11-08 | 2017-07-14 | 中国石油天然气股份有限公司 | Perfluor phosphoric acid salt gas pipeline drag reducer and preparation method thereof |
| CN104390139B (en) * | 2014-10-11 | 2017-03-08 | 中国石油天然气股份有限公司 | A kind of gas pipeline drag reduction agent and preparation method thereof |
| CN104633447A (en) * | 2014-12-07 | 2015-05-20 | 中国石油化工股份有限公司 | Nitrogen-contained type natural gas drag-reduction agent and synthesis method of nitrogen-contained type natural gas drag-reduction agent |
| CN104633448A (en) * | 2014-12-07 | 2015-05-20 | 中国石油化工股份有限公司 | Nitrogenous natural gas drag reducing agent and synthetic method thereof |
| CN107314246B (en) * | 2015-09-11 | 2018-11-13 | 徐州鸿丰高分子材料有限公司 | SiO2- polyolefin composite anti-drag agent solution in-situ synthetic method |
| CN109536265B (en) * | 2018-12-21 | 2021-11-23 | 中国石油集团渤海钻探工程有限公司 | Sulphur removal type drag reducer for coiled tubing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6774094B2 (en) * | 2001-04-24 | 2004-08-10 | Baker Hughes Incorporated | Drag reduction using fatty acids |
| CN1740251A (en) * | 2004-08-27 | 2006-03-01 | 中国石油天然气集团公司 | Drag reducing antiwear paint for gas-rich pipeline inside and its production process |
-
2007
- 2007-06-20 CN CN2007101190982A patent/CN101328442B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6774094B2 (en) * | 2001-04-24 | 2004-08-10 | Baker Hughes Incorporated | Drag reduction using fatty acids |
| CN1740251A (en) * | 2004-08-27 | 2006-03-01 | 中国石油天然气集团公司 | Drag reducing antiwear paint for gas-rich pipeline inside and its production process |
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| CN101328442A (en) | 2008-12-24 |
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Effective date of registration: 20211110 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co., Ltd Address before: Intercontinental building, 16 ande Road, Dongcheng District, Beijing 100011 Patentee before: China National Petroleum Corporation |
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