4 results about "Biodiesel feedstock" patented technology

This application relates to the field of dehydration and discloses a biodiesel feedstock dehydration device. The device includes a mounting plate with a dehydration tank assembly at its upper end. A sealing cover is located at the upper end of the dehydration tank assembly. Multiple snap-fit ​​plates are fixedly connected to the side of the sealing cover until the lower surface of the screw handle contacts the snap-fit ​​plates, thus restricting the position of the snap-fit ​​plates and fixing the sealing cover in place at the upper end of the dehydration tank assembly for convenient subsequent operation. When the sealing cover needs to be opened, the operator holds the screw handle to move the threaded rod away from the rotating rod, facilitating rotation of the rotating rod. This causes the threaded rod to rotate out of the slot in the snap-fit ​​plate, allowing for subsequent repositioning of the sealing cover. The rotating shaft plate is designed to cooperate with the rotation of the rotating rod.

The invention relates to the technical field of separation equipment, in particular to a multi-stage separation system for pure biodiesel and a using method thereof, and the multi-stage separation system comprises a rack, a fixed filtering structure, a collecting barrel body and a movable filtering mechanism; the fixed filtering structure comprises a filtering box body and a filtering net plate, and the filtering net plate is fixedly arranged in the filtering box body; a first penetrating through hole for the movable filter screen cloth to penetrate through is formed in the filter box body, the movable filter screen cloth is arranged on the filter screen plate, the unwinding assembly is used for unwinding the movable filter screen cloth, and the winding assembly synchronously winds the movable filter screen cloth after oil is filtered; the collecting barrel is arranged on the side, close to the rolling assembly, of the filtering barrel and used for receiving oil dripping from the movable filtering net cloth on the rolling assembly. According to the device, the risk that the separated solid impurities block the movable filter screen cloth can be reduced, so that oil plants can smoothly penetrate through the movable filter screen cloth and the filter screen plate, and the filtering and separating efficiency of pure biodiesel raw materials is improved.

The invention relates to the field of analytical chemistry, in particular to a method for detecting cardanol pollutants in a biodiesel raw material. The invention relates to a method for detecting cardanol pollutants in a biodiesel raw material, which adopts a gas chromatography-hydrogen flame ionization detection method, takes a fatty acid ester compound as an internal standard substance, and realizes synchronous separation and quantitative analysis of cardanol, cardiac phenol and anacardic acid through temperature programming. The fatty acid ester compound is selected from saturated fatty acid methyl ester or palmitic acid palmitate with the carbon chain length of C19-C32. By adopting the technical scheme, the high separation efficiency of the gas chromatography is utilized, and the temperature programming technology is combined, so that the three substances sequentially flow out in the chromatographic column according to the boiling point and polarity difference, synchronous separation is realized, and missing detection caused by single substance detection is avoided.

The invention relates to the technical field of preparation of biodiesel raw materials, in particular to a solid acid catalyst and application thereof in preparation of a second-generation biodiesel raw material. The solid acid catalyst provided by the invention comprises a polymer carrier and an acidic group connected to the carrier, the polymer carrier comprises at least two aromatic ring-containing vinyl monomers, and at least one of the aromatic ring-containing vinyl monomers contains a functional group capable of adjusting acid distribution or hydrophobicity; the acidic group comprises at least one of a sulfonic acid group, a phosphate group and a carboxyl group. According to the invention, at least two polymers containing aromatic ring structures are used as carriers, and acidic groups are grafted on the polymer carriers to form high-density acidic sites, so that when the polymer carriers are applied to preparation of second-generation biodiesel raw materials, the treatment efficiency and the recycling stability are higher, and the acid value, the metal content and the phosphorus content are effectively reduced; the problems of equipment corrosion, waste acid treatment and environmental risk are effectively avoided, and the engineering feasibility of the waste grease pretreatment process is remarkably improved.