Batch continuous production mode of fatty acid methyl ester transesterification reaction

Abstract

The invention discloses a batch continuous production mode of a fatty acid methyl ester transesterification reaction. The mode is provided with at least three or more first unit action grooves, second unit action grooves and third unit action grooves which form a standing pretreatment purification system. The first unit action grooves, the second unit action grooves and the third unit action grooves of the standing pretreatment purification system are respectively provided with a reaction mode for continuously feeding, standing and discharging a reactant in batches after the transesterification reaction, so that the standing pretreatment purification system is applied to a production process of fatty acid methyl ester and effectively performs the standing process of the transesterification reaction in a way of staggering feeding operation, standing operation and discharging operation so as to achieve the batch continuous production mode of the transesterification reaction during which multiple steps of operation are carried out alternately at the same time and do not interfere one another and the feeding operation, the standing operation and the discharging operation are separately performed. By the design, the aims of continuously producing and improving the conversion rate and shortening operation waiting time due to prolonged standing time are fulfilled; biodiesel with the optimal high purity is produced; and the yield and market competition strength are improved.

Description

technical field [0001] The invention relates to a batch continuous output mode of fatty acid methyl ester transesterification reaction. Background technique [0002] The current production and manufacturing process of fatty acid methyl ester (biodiesel) (such as figure 1 shown), the batch single-channel conversion mode 40 is mostly adopted, and the finished product of renewable energy can be produced after transesterification, that is, the purified fatty acid methyl ester. However, the traditional batch single-channel conversion mode 40 In production, only "batch single segment" can generate output (such as figure 2 As shown), when the previous process does not meet the set conditions, the next process can only waste time waiting, and cannot effectively achieve the best yield, which is not in line with economic benefits. [0003] The "multi-stage transesterification biodiesel production process" previously approved and published in Taiwan, China, No. 200740981, applicatio...

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Problems solved by technology

[0002] The current production and manufacturing process of fatty acid methyl ester (biodiesel) (such as figure 1 shown), the batch single-channel conversion mode 40 is mostly adopted, and the finished product of renewable energy can be produced after transesterification, that is, the purified fatty acid methyl ester. However, the traditional batch single-channel conversion mode 40 In production, only "batch single segment" can generate output (such as figure 2 As shown), when the previous process does not meet the set conditions, the next process can only waste time waiting, and cannot effectively achieve the best yield, which is not in line with economic benefits

[0003] The "multi-stage transesterification biodiesel production process" previously approved and published in Taiwan, China, No. 200740981, application number 095114051, from the analysis of its drawings and claims, its multi-stage cascaded catalytic continuous esterification reaction, It belongs to a single fluid phase for transesterification reaction, and it is only set to the design of "batch single-channel reaction mode" of "several stages" (please refer to the attached drawing of the case specification Figure 4 shown), therefore, in the pretreatment procedure, each reaction mode must be carried out step by step with reactors 1, 2, 3 and separators 4, 5, 6, respectively, in order to carry out the subsequent purification of neutralization, washing, and distillation Therefore, no matter it is two-stage reaction mode, three-stage reaction mode or multi-stage reaction mode, when the previous process is not completed or the set conditions are not met, the next process can only waste time waiting, and cannot achieve continuous at the same time. batch job

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