Esterification catalyst, esterification catalysis system and method for preparation of esterification catalyst and esterification catalyst reaction

Abstract

The invention provides an esterification catalyst, an esterification catalysis system and a method for preparation of the esterification catalyst and esterification catalyst reaction. The esterification catalyst is prepared from silica gel, and iron, zirconium, titanium, tin, scandium and sulfuric acid which are adsorbed on the silica gel; the mass percent of the iron, the zirconium, the titanium,the tin, the scandium and the sulfuric acid in the silica gel is respectively as follows: 9-30% of the iron, 0.009-0.015% of the zirconium, 9-30% of the titanium, 0.3-3% of the tin, 0.003-0.009% of the scandium and 59% of the sulfuric acid. The esterification catalysis system comprises a stock solution pool, a chemical filter pool, an adsorption area, a drying dehydration area, a roasting furnace, an esterification reaction pool, a deacidification oil tank and C-shaped macropore silica gel; the stock solution pool, the chemical filter pool, the adsorption area, the drying dehydration area, the roasting furnace, the esterification reaction pool and the deacidification oil tank are successively connected, and the C-shaped macropore silica gel is connected with the adsorption area. Accordingto the esterification catalyst, the esterification catalysis system and the method for the preparation of the esterification catalyst and the esterification catalyst reaction, the production cost ofbiodiesel is reduced, the sulfur content and acid value of a product achieve the purpose of meeting GB (V) diesel oil standard, the defect that traditional process causes environmental pollution easily is solved, and the esterification catalyst, the esterification catalysis system and the method for the preparation of the esterification catalyst and the esterification catalyst reaction make contributions to production of biodiesel, energy conservation, emission reduction and environmental protection.

Description

technical field [0001] The invention relates to an esterification catalyst, an esterification catalytic system and a method for preparing the esterification catalyst and performing esterification catalytic reaction. Background technique [0002] For the esterification of acidic animal and vegetable oils, most of the traditional processes use homogeneous liquid catalysts, and most of them use concentrated sulfuric acid as the esterification catalyst. However, concentrated sulfuric acid has three disadvantages as the esterification catalyst: first, the product needs to be washed with water, resulting in a large amount of Wastewater pollutes the environment; second, the catalyst cannot be separated from the product, and the sulfur content of the product far exceeds the standard; third, it corrodes the equipment. However, the use of heterogeneous solid acid catalysts is expensive, and the cost is very high when used in the manufacture of biodiesel, which is beyond the affordabil...

AI Technical Summary

Problems solved by technology

[0002] For the esterification of acidic animal and vegetable oils, most of the traditional processes use homogeneous liquid catalysts, and most of them use concentrated sulfuric acid as the esterification catalyst. However, concentrated sulfuric acid has three disadvantages as the esterification catalyst: first, the product needs to be washed with water, resulting in a large amount of Wastewater pollutes the environment; second, the catalyst cannot be separated from the product, and the sulfur content of the product far exceeds the standard; third, it corrodes equipment

However, the use of heterogeneous solid acid catalysts is expensive, and the cost is very high when used in the manufacture of biodiesel, and the owner cannot afford it.

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