Method for preparing biological compound demulsifying agent

A compound type, demulsifier technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problems of chemical demulsifiers such as environmental hazards, low demulsification efficiency, poor stability, etc., and achieve good demulsification effect , saving energy consumption, high stability effect
CN101709277AInactive Publication Date: 2010-05-19HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2010-05-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a biological compound demulsifying agent, which relates to a method for preparing a demulsifying agent. The method solves the problems that the harms to the environment caused by a chemical demulsifying agent still exist although the conventional biological demulsifying agent is compounded with the chemical demulsifying agent or auxiliary agents with other functions, and the biological demulsifying agent has low demulsifying efficiency, poor stability and high cost. The method comprises the following steps: firstly, preparing a bacillus mojavensis seed solution; secondly, preparing a bacillus subtillis seed solution; and finally, mixing the bacillus mojavensis seed solution and the bacillus subtillis seed solution, and inoculating the mixture into a culture medium for culture to obtain the biological compound demulsifying agent. The biological compound demulsifying agent has an oil expulsion rate up to 100 percent, reduces the addition and the cost, has high stability which is shown by good demulsifying effect on emulsions under the condition of the pH value of 3 to 9, and the change of the oil expulsion rate of not more than 10 percent when the temperature of the emulsions changes between 20 and 120 DEG C.
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Description

technical field

[0001] The invention relates to a preparation method of a demulsifier. Background technique

[0002] Demulsifiers play an important role in the fields of crude oil production, transportation, and oil pollution separation and removal. For a long time, chemical demulsifiers have been mainly used in industry for oil-water separation. However, chemical demulsifiers show strong specificity and will bring a large amount of inorganic salts or organic residues into crude oil wastewater. The discharge of waste water containing chemical residues can cause serious harm to the environment, and the treatment of such waste water will greatly increase production costs. Biological demulsification technology uses microbial cells themselves or their metabolic processes and metabolites to achieve emulsion demulsification, which has the advantages of simple production process and low energy consumption. More importantly, biological demulsifiers are non-toxic and easy to degra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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