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Low-temperature high-efficiency crude oil pour point depressant

A crude oil pour point depressant and low-temperature technology, which is applied in the field of petroleum industry, can solve the problems of poor viscosity reduction effect and poor storage stability, and achieve the effect of improving stable storage, improving dissolution and spreading performance, and improving dispersibility

Pending Publication Date: 2019-06-18
广州市天河区车陂亚贝思烘焙店
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  • Abstract
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a low-temperature high-efficiency crude oil pour point depressant in view of the poor viscosity-reducing effect and poor storage stability of commonly used pour point depressants at low temperature

Method used

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  • Low-temperature high-efficiency crude oil pour point depressant

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preparation example Construction

[0033] The preparation method of composite pour point depressing base material comprises the following steps:

[0034](1) Mix sepiolite and reagent A through a 120-mesh sieve at 50-60°C in a mass ratio of 1:5-8, mix them in a reactor, stir at a constant temperature of 400-700r / min for 1-3h, filter, and collect the filter residue After washing with water for 3~5 times, transfer to an oven and dry at 60~80°C for 4~8h to obtain the dry matter, take the dried matter in a tube furnace, roast at 300~500°C for 3~5h, cool to room temperature with the furnace, and heat up to 550~700°C, roast for 1~3h, cool naturally to room temperature, and discharge to obtain roasted product;

[0035] (2) At 50~75°C, take sodium humate and add reagent B to mix at a mass ratio of 1:8~13, stir at 400~700r / min for 45~65min, heat up to 100~120°C, keep stirring for 30~50min , to obtain the mixture, take the mixture according to the mass ratio of 14~20:3, add the formaldehyde solution with a mass fraction ...

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Abstract

The invention relates to a low-temperature high-efficiency crude oil pour point depressant, and belongs to the field of petroleum industry. Sepiolite is subjected to secondary roasting after drying, an ion diffusion channel in the sepiolite is widened, in combination with ion exchange and charge effects, the sepiolite is retarded and prevented from settling, the storage stability is improved, acrylic acid and maleic anhydride are used as raw materials, an dispersion effect is improved through steric hindrance and charge effects, and agglomeration and coagulation of heavy components in crude oil are slowed down; and chitosan, stearic acid, sodium bentonite and the like are used as raw materials, larger steric hindrance is generated, stable dispersion performance is provided, phospholipid isadded when a paraffin treating material is prepared, a single phospholipid molecule has more negative charges and can be adsorbed and wrapped on the surface of colloid, microgels have the same charges and repel each other, so that the pour point depression effect is improved, agglutination deposition of components of the crude oil is slowed down, and the storage stability of the crude oil is further improved. The problems of poor viscosity reduction effect and poor storage stability of the conventional pour point depressant at a low temperature are solved.

Description

technical field [0001] The invention relates to a low-temperature and high-efficiency crude oil pour point depressant, which belongs to the field of petroleum industry. Background technique [0002] Crude oil is a complex mixed system composed of paraffin, colloid, asphaltenes, aromatic hydrocarbons and light hydrocarbons, among which the paraffin component is the main factor affecting the fluidity of waxy crude oil. At a higher temperature, paraffin wax dissolves in liquid crude oil and has better fluidity; as the temperature decreases, the wax gradually crystallizes out, and the wax crystals form a three-dimensional network structure through cross-linking, and the crude oil gels and loses fluidity. The extraction and transportation of oil pose great difficulties. Traditionally, this type of crude oil is transported by heating station by station, but this method requires a large investment in equipment, high fuel and power consumption, great environmental pollution, and th...

Claims

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Application Information

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IPC IPC(8): C09K8/58C09K8/524
Inventor 刘蓉凤
Owner 广州市天河区车陂亚贝思烘焙店
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