Circulation and decoloration device for epoxy type plasticizer production and processing

Abstract

The invention discloses a circulation decolorization device for the production and processing of epoxy plasticizers, which comprises a tank body, an annular dropping pipe, an alkali solution injection funnel, a hydrogen peroxide injection funnel, a first circulation cylinder body, a second circulation cylinder body, a second circulation cylinder body, The first helical blade, the second helical blade, the outer fixed frame, the inner fixed frame and the driving device; the stainless steel metal mesh and the activated carbon particles inside filter the plasticizer to keep the plasticizer pure and reduce the impact of impurities on the decolorization process , to improve the decolorization quality of the plasticizer, and by loosening the fastening bolts, the slide plate can be pulled out manually, so as to facilitate the cleaning or replacement of the stainless steel metal mesh, the operation is convenient, and the filtering effect of the stainless steel metal mesh and activated carbon particles is guaranteed. The mixed solution flows and mixes repeatedly in the first circulation fixed cylinder and the second circulation fixed cylinder, so it is convenient to control the mixing time according to the needs to achieve the decolorization standard.

Description

technical field [0001] The invention relates to the technical field of plasticizer production, in particular to a circular decolorization device for production and processing of epoxy plasticizers. Background technique [0002] Plasticizer is a polymer material additive widely used in industry. Adding this substance in plastic processing can make it more flexible, easy to process, and can be legally used for industrial purposes. Taiwan manufacturers use a common plasticizer DEHP (later detected DINP, DNOP, DBP, DMP, DEP, etc.) instead of palm oil to prepare a clouding agent that can also produce a thickening effect similar to that of an emulsifier. [0003] The existing production process of traditional epoxy plasticizers mainly adopts the method of alkali refining and refining, which is refined by concentrated alkali low temperature process. Affected by raw materials and processing conditions, the traditional process control conditions are not only the main glycerin fatty a...

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Problems solved by technology

[0003] The existing production process of traditional epoxy plasticizers mainly adopts the method of alkali refining and refining, which is refined by concentrated alkali low temperature process. Affected by raw materials and processing conditions, the traditional process control conditions are not only the main glycerin fatty acid ester mixture In addition, it will also produce various impurities with varying amounts, such as phospholipids, proteins, pigments, water, etc. The existence of these substances will undoubtedly affect the epoxidation reaction and product quality, while the traditional process conditions have a low removal rate for impurities. Moreover, the traditional equipment removal method mainly uses activated carbon or silica gel to remove directly in the tank, resulting in poor decolorization effect of epoxy soybean oil, which cannot improve the decolorization effect, and there will be many impurities, which cannot be fundamentally removed. pigment

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