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Preparation method of compound microorganism demulsifying agent

A technology of compound microorganism and demulsifier, which is applied in the field of preparation of compound microorganism demulsifier, can solve the problems of low dehydration rate, slow dehydration speed and poor effect, and achieve the effect of simple preparation steps, fast dehydration speed and good effect

Inactive Publication Date: 2016-06-22
CHANGZHOU LANXU CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention: Aiming at the disadvantages of large amount of anionic demulsifier, poor effect, easy to be affected by electrolyte, low dehydration rate, and slow dehydration speed, a culture medium prepared from agar, glycerin, etc. is provided. , added to the bottom mud excavated from the bottom of the oilfield surface for cultivation, fermented and centrifuged to obtain a fermented liquid, and then soybean straw was taken, washed and air-dried, crushed into straw fibers, added fermented liquid, dichloroethane and diisophosphorous acid Ultrasonic dispersion treatment of propyl ester, mixing with ethylene glycol monomethyl ether for heat preservation treatment, adding sodium alginate for wrapping, and spray drying to prepare demulsifier

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] First, in parts by weight, select 15 parts of agar, 5 parts of glycerin, 5 parts of glucose, 10 parts of peptone and 65 parts of water, stir and mix them at 160r / min, and place them in a shaker for 50 minutes to obtain a culture solution. Then, dig 1kg of bottom mud from the place 10m below the surface of the oilfield and put it into a petri dish, add the culture solution to the bottom mud according to the solid-liquid ratio of bottom mud and culture solution 2:1, control the temperature at 20°C, and cultivate for 3 day, the culture medium was changed every 10 hours to obtain a mixture; the mixture obtained above was put into a fermenter, and 3% betaine of the mixture mass was added thereto at the same time, the fermentation temperature was controlled to be 28°C, and the fermentation was sealed for 3 days, and then the Place it in a centrifuge at 3000r / min for 10 minutes to obtain a fermented liquid; weigh 0.5kg of soybean stalks, wash them twice with clean water, and pl...

example 2

[0019] First, in parts by weight, select 23 parts of agar, 7 parts of glycerin, 8 parts of glucose, 12 parts of peptone and 50 parts of water, stir and mix at 160 r / min, and place in a shaker for 55 minutes to obtain a culture solution Then, dig 2kg of bottom mud from the place 15m below the surface of the oilfield and put it into a culture dish, add the culture solution to the bottom mud according to the solid-liquid ratio of bottom mud and culture solution at 2:1, control the temperature at 22°C, and cultivate for 4 day, the culture medium was changed every 13 hours to obtain a mixture; the mixture obtained above was put into a fermenter, and at the same time, betaine with 4% of the mixture mass was added thereto, the fermentation temperature was controlled to be 32°C, and the fermentation was sealed for 4 days, and then the Place it in a 3000r / min centrifuge for 13 minutes to obtain a fermentation broth; weigh 0.6kg of soybean stalks, wash them with clean water for 3 times, ...

example 3

[0022]First, in parts by weight, select 30 parts of agar, 10 parts of glycerin, 10 parts of glucose, 15 parts of peptone and 35 parts of water, stir and mix at 160 r / min, and place in a shaker for 60 minutes to obtain a culture solution ; then dig 2kg of bottom mud from the oilfield surface 20m and put it into a culture dish, add the culture solution to the bottom mud according to the solid-liquid ratio of bottom mud and culture solution 2:1, control the temperature at 24°C, and cultivate for 5 day, the culture medium was changed every 16 hours to obtain a mixture; the mixture obtained above was put into a fermenter, and 5% betaine of the mixture mass was added thereto at the same time, the fermentation temperature was controlled to be 35°C, and the fermentation was sealed for 5 days, and then the Place it in a centrifuge at 3000r / min for 15 minutes to obtain a fermented liquid; weigh 0.7kg of soybean stalks, rinse them with clean water for 3 times, and place them in a ventilat...

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Abstract

The invention discloses a preparation method of a compound microorganism demulsifying agent and belongs to the technical field of demulsifying agent preparation. Agar, glycerin and the like are taken for preparing a culture solution, the culture solution is added into bottom mud excavated from the bottom of the earth' surface of an oil field for cultivation, a fermentation solution is obtained by means of fermentation and centrifuging, soybean straw is washed and aired and then is smashed into straw fibers, the fermentation solution, dichloroethane and diisopropyl hydrogen phosphate are added for ultrasonic dispersion processing, the mixture is mixed with ethylene glycol monomethyl ether for heat-preserving processing, sodium alginate is added for packaging, and the demulsifying agent is prepared through spraying and drying. The preparation method has the advantages that preparation steps are simple, the dewatering rate of the obtained product is 20% or above higher than that of other products, and dewatering speed is high; the using amount is small, the effects is good, and it is avoided that the demulsifying agent is affected by electrolyte and accordingly the effect is reduced.

Description

technical field [0001] The invention relates to a preparation method of a composite microbial demulsifier, belonging to the technical field of demulsifier preparation. Background technique [0002] Demulsifier is a kind of surface active substance, which can destroy the structure of emulsified liquid, so as to achieve the purpose of separating the phases in the emulsion. Crude oil demulsification refers to the use of chemical action of demulsifier to separate the oil and water in the emulsified oil-water mixture, so as to achieve the purpose of dehydration of crude oil, so as to ensure the water content standard of crude oil export. There are many types of demulsifiers, which can be divided into cationic, anionic, nonionic, and two-type ionic demulsifiers according to the classification method of surfactants. Anionic demulsifiers include carboxylates, sulfonates, and polyoxyethylene fatty sulfate salts, etc., which have the disadvantages of large dosage, poor effect, easy t...

Claims

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Application Information

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IPC IPC(8): C10G33/04
CPCC10G33/04
Inventor 汪巍盛艳花
Owner CHANGZHOU LANXU CHEM CO LTD