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34results about How to "Easy to dissolve and disperse" patented technology

Treatment process of high-slag-content and water-containing sump oil

The invention relates to a treatment process of high-slag-content and water-containing sump oil and relates to the technical field of separation and treatment of slag-containing and water-containing sump oil. Firstly, the sump oil is washed with alkali liquor, emulsification systems of a W / O type and an O / W / O type in the sump oil are subjected to phase inversion to form emulsion of an O / W type, the viscosity of the high-slag-content and water-containing sump oil and the interfacial tension of the emulsion systems can be effectively reduced due to formation of the emulsion of the O / W type, and therefore mass transfer of a subsequent demulsifying agent is facilitated, and the demulsifying effect of the subsequent demulsifying agent fully acts. Then, sulfuric acid is added and made to react with sodium naphthenate, sodium naphthenate is reduced into naphthenic acid without the emulsifying effect, and therefore the emulsifying effect of sodium naphthenate is eliminated. Next, a demulsifying agent of a compound type and a flocculating agent are sequentially added, and further flocculating setting separation happens to part of dross remaining in an oil layer. Finally, the sump oil is treated through the acoustic cavitation effect of ultrasonic waves, the mechanical vibration effect and the heat treatment effect, water and slag are further removed, and crude oil is recycled.
Owner:YANGZHOU UNIV

Mannich base acidizing corrosion inhibitor for organic acid system, and preparation method of Mannich base acidizing corrosion inhibitor

ActiveCN109265402AImprove adsorption firmnessGood compatibilityOrganic chemistrySolventBenzimidazole
The invention relates to a Mannich base acidizing corrosion inhibitor for an organic acid system, and a preparation method of the Mannich base acidizing corrosion inhibitor. The method comprises the steps of adding benzimidazole, aldehyde and organic amine into a container according molar ratio of 1 to (1.2-1.5) to 1, then adding toluene and mixing uniformly, and adjusting the pH value to 2-3 by using a catalyst; then, heating up to a reflux temperature of the toluene, and carrying out a reaction for 6h under the condition of heat preservation so as to obtain benzimidazole Mannich base; evenlymixing the following materials by mass percent: 10-15% of thiocyanate, 3-5% of alkynol, 5-10% of a surfactant, 40-62% of a solvent and 20-30% of the benzimidazole Mannich base so as to obtain the Mannich base acidizing corrosion inhibitor for the organic acid system. The Mannich base acidizing corrosion inhibitor for the organic acid system has an excellent protection effect on carbon steel oil pipes and equipment in a strong acid environment. The product solves the problem of corrosion of the organic acid system in an acidizing fracturing operation process, thus achieving the aim of protecting the oil pipes.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Preparation method of thermosensitive color change non-woven fabric

The invention relates to the technical field of a non-woven fabric, provides a preparation method of a thermosensitive color change non-woven fabric, and solves problems that in the prior art, a color-changing agent required for preparing thermosensitive color change fibers has a high requirement for temperature resistance, durability of the prepared thermosensitive color change fibers is reducedand the prepared thermosensitive color change fibers are poor in hand feeling. The preparation method comprises the following steps of: (1) using thermosensitive color change fibers and common ES fibers as raw materials of the thermosensitive color change non-woven fabric, wherein the thermosensitive color change fibers are of a skin-core type structure and comprise skin layers and core layers, each skin layer comprises the following raw materials in parts by weight: 0.8 to 3 parts of color fixative, 1 to 30 parts of color developing agent, 30 to 90 parts of polyethylene glycol 1500 and 60 to100 parts of polyethylene, and each core layer is polyethylene terephthalate; (2) respectively carrying out opening mixing, carding, hot air adhesion and cooling setting on the thermosensitive color change fibers and the common ES fibers to prepare a first non-woven fabric and a second non-woven fabric; and (3) carrying out online compounding on the first non-woven fabric and the second non-wovenfabric which are prepared in the step (2).
Owner:FUJIAN HENGAN HLDG CO LTD +2

A kind of preparation method of thermosensitive discoloration non-woven fabric

The invention relates to the technical field of non-woven fabrics, and provides a method for preparing heat-sensitive color-changing non-woven fabrics, which solves the high temperature resistance requirements of the color-changing agent required to prepare heat-sensitive color-changing fibers in the prior art and the durability of the prepared heat-sensitive color-changing fibers. The problem of loss and poor hand feeling includes the following steps: (1) using heat-sensitive color-changing fiber and ordinary ES fiber as the raw material of heat-sensitive color-changing non-woven fabric; the heat-sensitive color-changing fiber is a skin-core structure, including a skin layer and a core layer, the skin layer includes the following raw materials in parts by weight: 0.8 to 3 parts of color developing agent, 1 to 30 parts of color developing agent, 30 to 90 parts of polyethylene glycol 1500, 60 to 100 parts of polyethylene, and the core layer is Polyethylene terephthalate; (2) heat-sensitive color-changing fibers and ordinary ES fibers are respectively subjected to loosening and mixing, carding, hot-air bonding, cooling and setting to obtain the first non-woven fabric and the second non-woven fabric; (3) Composite the first non-woven fabric and the second non-woven fabric prepared in step (2) online.
Owner:FUJIAN HENGAN HYGIENE MATERIAL

Composite descaling process of non-stop production of sea pipe throwing balls and descaling agent

ActiveCN109013585BEasy to bring outEnhance the effect of pigging and descalingHollow article cleaningProcess engineeringIndustrial engineering
The invention discloses a non-stop production subsea pipeline ball-throwing and anti-scaling agent compound descaling technology. A ball-throwing inlet is formed in the end, close to a crude oil inlet, on a subsea pipeline, and a ball-throwing outlet is formed in the end, close to a crude oil outlet, on the subsea pipeline; crude oil flows in a non-stop production mode from the crude oil inlet tothe crude oil outlet, a first pipe cleaning machine is put in first through the ball-throwing inlet, a second pipe cleaning pipe is put in after the first pipe cleaning machine flows out of the ball-throwing outlet, anti-scaling agents are put in through the crude oil inlet when the second pipe cleaning machine flows to a quarter of the length of the subsea pipeline, the second pipe cleaning machine is put in again when the anti-scaling agents are put in for 6-8 h, putting-in of the second pipe cleaning machine and the anti-scaling agents and the putting-in of the second pipe cleaning pipe again is a whole cleaning process, and the whole cleaning process is repeated until the last discharge of dirt weight is less than 3kg. The non-stop production subsea pipeline ball-throwing and anti-scaling agent compound descaling technology can effectively remove the dirt accumulated in the subsea pipeline, and can simultaneously carry out the subsea pipeline descaling operation without stopping production.
Owner:北京峦海阜程科技发展有限责任公司

Non-stop production subsea pipeline ball-throwing and anti-scaling agent compound descaling technology

ActiveCN109013585AEasy to bring outEnhance the effect of pigging and descalingHollow article cleaningEngineeringPoint of entry
The invention discloses a non-stop production subsea pipeline ball-throwing and anti-scaling agent compound descaling technology. A ball-throwing inlet is formed in the end, close to a crude oil inlet, on a subsea pipeline, and a ball-throwing outlet is formed in the end, close to a crude oil outlet, on the subsea pipeline; crude oil flows in a non-stop production mode from the crude oil inlet tothe crude oil outlet, a first pipe cleaning machine is put in first through the ball-throwing inlet, a second pipe cleaning pipe is put in after the first pipe cleaning machine flows out of the ball-throwing outlet, anti-scaling agents are put in through the crude oil inlet when the second pipe cleaning machine flows to a quarter of the length of the subsea pipeline, the second pipe cleaning machine is put in again when the anti-scaling agents are put in for 6-8 h, putting-in of the second pipe cleaning machine and the anti-scaling agents and the putting-in of the second pipe cleaning pipe again is a whole cleaning process, and the whole cleaning process is repeated until the last discharge of dirt weight is less than 3kg. The non-stop production subsea pipeline ball-throwing and anti-scaling agent compound descaling technology can effectively remove the dirt accumulated in the subsea pipeline, and can simultaneously carry out the subsea pipeline descaling operation without stopping production.
Owner:北京峦海阜程科技发展有限责任公司

Oil well plugging removal method

The invention discloses a blockage removal method for an oil well. An oil pipe is arranged in the oil well, and an annular space formed by the oil pipe and the well wall is internally provided with asleeve pipe. The method includes the following steps that a polymer neutral blockage removal agent is prepared; the prepared polymer neutral blockage removal agent is put into an inlet of the oil pipefor the first time, hot water with the temperature of 70 DEG C is added in an inlet of the sleeve pipe, the inlet of the oil pipe and the inlet of the sleeve pipe are closed, and the wellhead of theoil well is covered by insulating cotton; after being closed for 12 hours, the inlet of the oil pipe and the inlet of the sleeve pipe open again, the inlet of the sleeve pipe is then closed after hotwater with the temperature of 80 DEG C is added in the sleeve pipe for replacing original water, the prepared polymer neutral blockage removal agent is poured in the inlet of the oil pipe for the second time, and meanwhile mixed gas of carbon dioxide and nitrogen with the pressure of 2.0 MPa is continuously injected in the oil pipe. The method can effectively remove stratum blockage objects in theoil well, does not cause corrosion and damage to the stratum, equipment and pipelines, and also does not affect subsequent dehydration of crude oil.
Owner:北京峦海阜程科技发展有限责任公司
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