Washing flow tank convenient for ester and saponin separation

Abstract

The invention discloses a washing flow tank which is convenient for ester and saponin separation. The tank which comprises a body is characterized in that: spraying devices are arranged on an upper part of the body, a window and joints for material discharge are arranged on a lower part of the body, and the window and the joints are in a same horizontal position. The tank has the advantages that a problem of secondary emulsification of ester caused by traditional stirring modes can be avoided and simultaneously the investment of the washing flow tank can be reduced and energy consumption in production processes can be decreased, because the spraying devices employed in the present invention allow water to be sprayed into a material system from the top of the washing flow tank; and the quality of products can be improved because a case that water impurities and saponin are introduced into ester during emptying ester, saponin and water impurity is avoided, the centrifugation difficulty is reduced, and the separation precision is improved.

Description

technical field [0001] The invention relates to a water washing and settling tank, in particular to a water washing and settling tank which facilitates the separation of grease and soap. Background technique [0002] In the process of biodiesel production, the separation of esters and soaps is carried out by adding water to the material system containing esters, soaps and some water impurities in the washing and settling tank for stirring and mixing, and then using static sedimentation to separate the esters, soaps, and water impurities. layer, and then discharge the three layers of materials separately. For the above separation process, in addition to the tank body and related components, the existing water washing settling tank device is also equipped with stirring components, including motors, reducers, racks, couplings, seals, stirring shafts, paddles, etc. Carrying out the above-mentioned separation process in the existing water washing settling tank device can have th...

AI Technical Summary

Problems solved by technology

[0003] One is that due to the presence of soap in the material system, emulsification will occur when stirring after adding water. Even if some esters that could have been directly separated are saponified, the saponified esters must be recovered and enter the next process to generate fatty acids , after separation, esterification is carried out in the deesterification section, which causes a lot of energy waste and reduces production capacity, which is a problem that plagues many biodiesel production enterprises;

[0004] Second, in the separation process of ester and soap, due to the problem of light transmission of materials, the separation interface of ester, soap and water impurities cannot be seen through the sight glass on the equipment. The pipeline sight glass discharges the materials separately, that is, the water impurities are released first, then the soap is released, and finally the ester is released. During this process, due to the fluidity of the water impurities and soap, part of it stays on the inner wall of the tank, and is discharged when the ester is finally released. brought into the ester, resulting in a decrease in the precision of the next step of centrifugation, and ultimately affecting the quality of the ester product

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