Reactor for producing biodiesel in presence of solid catalyst

Abstract

The invention relates to a reactor for producing biodiesel in the presence of a solid catalyst. The reactor comprises a stirring tank, a filter, a circulating pump, a methanol storage tank and a discharging pump, wherein the filter is internally arranged at the bottom of the stirring tank; the outlet of the filter is connected with the inlet of the circulating pump; the outlet of the circulating pump is connected with the feed inlet of the stirring tank; the stirring tank is connected with the outlet of the circulating pump through a pipeline with a control valve; and the methanol storage tank is directly connected with the feed inlet of the stirring tank or the inlet of the circulating pump. Compared with the prior art, the reactor has the advantages of conveniently recovering the solid catalyst, prolonging the service life of the catalyst, reducing the cost, and the like.

Description

technical field [0001] The invention relates to a reactor for producing biodiesel, in particular to a reactor for catalyzing the production of biodiesel by a solid catalyst (including solid catalysts such as immobilized biological enzymes, acids, alkalis, salts, etc.). Background technique [0002] Currently, conventional stirred tank reactors, packed column reactors, or airlift reactors are commonly used in biodiesel production using solid catalysts. Among the three reactors, the stirred tank reactor has the best mass transfer effect and is currently the most widely used. However, when using solid catalysts (including solid catalysts such as immobilized biological enzymes, acids, alkalis, and salts) as catalysts, there are some shortcomings in simply using traditional reactors, which are mainly manifested in the following two points: 1. Catalyst reuse is extremely low Convenience. After the catalytic reaction is over, the reaction solution needs to be pumped out of the re...

AI Technical Summary

Problems solved by technology

However, when using solid catalysts (including solid catalysts such as immobilized biological enzymes, acids, alkalis, and salts) as catalysts, there are some shortcomings in simply using traditional reactors, which are mainly manifested in the following two points: 1. Catalyst reuse is extremely low convenient

After the catalytic reaction is over, the reaction solution needs to be pumped out of the reactor to filter out the catalyst. When it is used next time, the filtered catalyst is put back into the reactor for catalytic reaction, which not only increases the production operation time, but also reduces the cost of equipment. Utilization rate, wasted human resources again; Two, solid catalyst density is greater than water, easily deposits on the bottom of the reactor, although the reactor can be provided with baffles, the longitudinal mass transfer of the reaction solution is still not ideal, so that the reaction substrate and Insufficient catalyst contact affects conversion rate

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