Nano-depressant achieve more stations, production pour cold viscosity

 High-performance improve energy efficiency and low pour point depressant was prepared and crude oil processing complex nanometer process waxy crude oil cold flow properties, it is to improve the cold flow properties of waxy crude oil and achieve its safe, efficient, energy-saving technology and new technology transport two key technology, for Daqing crude oil carried out technical research. After Qin Beijing line, DPRK line, Shi Lan line industrial applications pilot test verification, nanotechnology has a good pour point depressant effect of viscosity, pour point range of more than 15 ℃, viscosity reduction rate of 90%. Huludao were put into operation in engineering change lines and change the line rich, the application of nano-depressant first time the cold Daqing crude oil production for the waxy crude oil pipeline put into operation and provides a safe, economical and technical support. Through the study found: Nano Wax PPD can control crystal growth space; nano-depressant to inhibit the precipitation of crude oil in paraffin, wax precipitation point lowering properties; nano-modified oil PPD has standing to maintain low temperature fluidity Long timeliness; nano-modified oil PPD has good resistance to shear; nano-modified oil PPD reheating temperature can be significantly reduced; nano PPD modified oil has good thermal stability sex; Nano PPD on a variety of crude oil has a good effect modification; nano PPD because it has special properties of nanomaterials can be carried out tarcrete pipe wall, a "scavenger" role. Nano-depressant for crude paraffin crystallization system has a good sensitivity, can significantly improve the waxy crude oil cold flow properties. First, pour point, viscosity reduction effect is significant: at 25 ℃ temperature conditions, compared with the untreated crude oil and conventional crude oil pour point depressant integrated heat treatment, adding crude oil pour point depressant modified nano apparent viscosity (50s-1 ) decreased by 86.7% and 32%, pour point depressants, the 16 ℃ and 7 ℃; secondly, low temperature fluidity and dynamic modification of crude oil, static timeliness good: add 100g / t Nano PPD after modification crude oil, at 25 ℃ temperature conditions, static stability after 7d, crude oil tends to Newtonian fluid flow in good condition, the apparent viscosity and pour point rate rise less than 10% and 5%, at 22 ℃ temperature conditions, crude oil still state of flux; Third, the internal strength of the modified structure of crude oil at a low temperature decrease: compared to the untreated crude oil and conventional crude oil pour point depressant integrated heat treatment, nano-depressant modified temperature yield value in crude oil decreased by 14 ℃ and 9 ℃. Baodi Pilot Ring Road shutdown and startup tests show that the addition of crude oil processed nano-depressant, shutdown after 99 h at 20 ℃ smooth start; Fourth, modified wax precipitation point lower crude oil: Untreated Daqing wax precipitation point of 48 ℃, after the nano-depressant modifier treatment wax precipitation point of Daqing crude oil dropped to 45 ℃; Fifth, nano-modified PPD applies a wide range of waxy crude oil, heating oil Low processing temperature requirements: Unlike the current widespread use of a variety of chemical depressant for crude oil has a strong relevance to this feature, the same kind of nano-depressant suitable for a variety of different types of waxy crude oil; nano down coagulant, at 48 ℃ and above, improved to varying degrees heat treatment temperature on the cold flow properties of crude oil have; Sixth, modified oil temperature rise of its low temperature rheology relatively small: PPD modified nano Daqing crude oil processing, oil apparent viscosity at 25 ℃ 38 ℃ temperature conditions equivalent to untreated apparent viscosity of Daqing crude oil, crude oil pour point depressants 16 ℃. In summary, after Daqing crude oil pour point depressant modified nanometer process, its low temperature flow performance is greatly improved, and the static stability timeliness is very good, can greatly extend the pipeline safety shutdown restart time, and achieve containing Investment and cooling wax cold or at room temperature transportation of crude oil. Use the waxy crude oil pipeline in nano PPD modified to improve the low temperature fluidity of crude oil, it is conducive to long-distance oil pipelines, offshore pipelines, intermittent oil gathering pipeline transport, cooling conveyor and transported at room temperature, can effectively reduce the tube transport operating costs, improve transport safety pipeline has good prospects. Table 1 nanometer depressant use in the production pipeline is summarized in Table No. Name Test time line treatment temperature (℃) dosage (g / t) 1 Qin Jing Qian - Baodi 58-601002 DPRK line 7510075 1007065 (intermittent delivery) 4 Shi Lan line 72-75 12.5 255 Huludao rerouted cold production 59-61100806 rich rerouted cold production 58-60100 summarized above test and application, the following conclusions: Qinhuangdao-Beijing Oil additives 100g / t by 58 ℃ to 60 ℃ treatment, pour point depressants from the 31 ℃ to 16 ℃, 25 ℃ when the viscosity reduction rate of 89.9%; China and Korea Line Daqing oil additives 100g / t through after 65 ℃ treatment, pour point decreased from 29 ℃ 85 ℃ after heat treatment to 17 ℃, 25 ℃ when the viscosity reduction rate of 91%; iron Qin line segment change lines in operation in Huludao, Daqing crude has once again proven nano-depressant 100g / t, condensate point can be reduced to 18-20 ℃, the viscosity reduction rate reached more than 90%; the rich segment production Qinhuangdao-Beijing line, additive concentration of 100g / t, pour point can be reduced to 17-23 ℃, the viscosity reduction rate reached 90% above; nano-modified PPD Changqing crude oil pipeline works well, its magnitude and GY2 pour viscosity depressant effect equivalent to outside companies with an alternative product may be; another, secondary treatment oil change after temperature drop sex is obviously better than GY2 depressant and secondary treatment temperature can be reduced 5 ~ 10 ℃, saving huge space; Nano PPD because it has special properties of nanomaterials can be carried out tarcrete pipe wall, with " scavenger "role. After the field test also shows: try to enlarge the sample preparation of nano-depressant and indoor production reached the same level of operational conditions more conducive to the scene to play against oil-modified nano-depressant effect, the modified crude after experiencing repeated heating and pump shear effect is very stable, it is conducive to the scene of the application; Qin Beijing line baodi Ring Road shutdown and startup tests showed that crude oil pour point depressant modified after nano, pipeline safety shutdown time can be extended significantly ( shutdown 99 hours, 20 ℃ smooth start), after stopping the output of crude oil in the tube, the structure is much weaker than the unmodified oil and aging stability is good for the next lower east pipeline inlet temperature to achieve safe, efficient and economical operation to provide technical basis. Contact (Manager Ma): 13930666393