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A kind of solid defoamer for oil field gas pipeline and preparation method thereof

A solid defoamer and gas pipeline technology, which is applied in the field of oil field defoamer, can solve the problems of difficult application of oil field gas pipeline, high cost of curing molding and packaging, and inability to adjust the dosage of pharmaceuticals, and achieves the preparation of finished products. High rate, easy to use equipment, good durability

Active Publication Date: 2018-10-30
XIAN TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyether solid defoamers that have been developed now have problems such as poor defoaming performance, inability to adjust the dosage of agents, and high curing molding and packaging costs, which are difficult to apply to oilfield gas pipelines

Method used

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  • A kind of solid defoamer for oil field gas pipeline and preparation method thereof

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Experimental program
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preparation example Construction

[0033] The preparation process of described defoamer comprises the following steps:

[0034] Step 1. Modification: Using chloroplatinic acid as a catalyst, react polyether with polysiloxane 1:1 at 95-125°C for 4-6 hours to obtain polyether-modified polysiloxane (PESO);

[0035] Step 2. Dispersion: react the polyether-modified polysiloxane (PESO) and silicon dioxide in the above parts by weight at 140-160°C for 5-8h;

[0036] Step 3, emulsification: the above weight parts dispersed polyether modified polysiloxane (PESO), polyoxypropylene polyoxyethylene glyceryl ether (GPE), nonionic surfactant S-80 and OP-10 mixture After the material is heated to 70-85°C, keep the temperature for 10-25min;

[0037] Step 4. Heating: heating the polyvinyl alcohol, paraffin and emulsified product in the above parts by weight to 70-90° C. and then keeping the temperature for 2-3 hours;

[0038] Step 5. Cooling and forming: Put the melted material into the packaging mold prepared in advance, coo...

Embodiment 1

[0041] Solid defoamer, it is made up of the raw material component of following weight portion content:

[0042] Polyether modified polysiloxane (PESO): 20

[0043] Polyoxypropylene polyoxyethylene glyceryl ether (GPE): 10

[0044] Silica: 10

[0045] Nonionic surfactant S-80 and OP-10 mixture: 20

[0046] Polyvinyl alcohol: 5

[0047] Paraffin: 35

[0048] A kind of preparation technology of solid defoamer, it comprises the following steps:

[0049] (1) Modification: Using chloroplatinic acid as a catalyst, react polyether with polysiloxane 1:1 at 95-125°C for 4-6 hours to obtain polyether-modified polysiloxane (PESO);

[0050] (2) Dispersion: react the polyether-modified polysiloxane (PESO) and silicon dioxide in the above parts by weight at 140-160°C for 5-8h;

[0051] (3) Emulsification: Mixture of polyether-modified polysiloxane (PESO), polyoxypropylene polyoxyethylene glyceryl ether (GPE), nonionic surfactant S-80 and OP-10 after dispersion of the above weight part...

Embodiment 2

[0055] Solid defoamer, it is made up of the raw material component of following weight portion content:

[0056] Polyether modified polysiloxane (PESO): 40

[0057] Polyoxypropylene polyoxyethylene glyceryl ether (GPE): 5

[0058] Silica: 5

[0059] Nonionic surfactant S-80 and OP-10 mixture: 20

[0060] Polyvinyl alcohol: 10

[0061] Paraffin: 20;

[0062] A kind of preparation technology of solid defoamer, it comprises the following steps:

[0063] (1) Modification: Using chloroplatinic acid as a catalyst, react polyether with polysiloxane 1:1 at 95-125°C for 4-6 hours to obtain polyether-modified polysiloxane (PESO);

[0064] (2) Dispersion: react the polyether-modified polysiloxane (PESO) and silicon dioxide in the above parts by weight at 140-160°C for 5-8h;

[0065] (3) Emulsification: The above weight parts are dispersed polyether modified polysiloxane (PESO), polypropylene polyoxyethylene glyceryl ether (GPE), nonionic surfactant S-80 and OP-10 mixed material Afte...

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Abstract

The invention discloses a solid defoaming agent applied to an oil field gas transmission line and a preparation method thereof. The solid defoaming agent is prepared from the following raw material components in parts by mass: 20 to 40 parts of polyether modified polysiloxane (PESO), 5 to 10 parts of polypropylene glycerine ethoxylate (GPE), 5 to 10 parts of silicon dioxide, 10 to 20 of a mixture of a non-ionic surfactant S-80 and OP-10, 5 to 15 parts of polyvinyl alcohol and 15 to 35 parts of paraffin. A preparation process of the solid defoaming agent comprises the following five steps: (1) modifying; (2) dispersing; (3) emulsifying; (4) heating; (5) cooling for molding. The solid defoaming agent has the advantages of high defoaming speed, high durability, acid and alkali resistance, temperature resistance and the like; the solid defoaming agent can be directly cooled and molded into required shapes, and packaging and transportation costs are lowered; a defoaming agent medicinal stick is directly arranged on the gas transmission line, so that the production cost is lowered, and long shelf life is achieved.

Description

technical field [0001] The invention belongs to the technical field of defoamers for oilfields, in particular to a solid defoamer for gas pipelines in oilfields. Background technique [0002] In production, harmful foam is often generated due to various reasons. If not properly suppressed, foam will reduce the effective load of equipment, prolong the reaction time of the production process, and increase energy consumption. Therefore, suppressing or reducing the generation of foam has become an important issue in many industrial sectors. Silicone defoamers are usually used to solve these problems. Silicone defoamers have the following advantages: First, low surface tension, high surface activity, and strong defoaming power (for example, the surface tension of medium-viscosity dimethyl silicone oil is only 20-21 mN / m 2 , than water 76 mN / m 2 and general foaming fluids are all low); second, good thermal stability and low volatility, although simethicone has a low surface ten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D19/04
CPCB01D19/0409
Inventor 张改任菁菁田敏马爱洁王康
Owner XIAN TECH UNIV