Abstract: A method for recycling waste polyester, in particular to a method for recycling waste polyester by a modified alcoholysis method to recycle waste polyester to prepare dimethyl terephthalate (DMT), is provided and belongs to waste polyester recycling technology field. The waste polyester after dewatering and deoxygenation treatment is used as a raw material, in the step of feeding in melted state the alcoholysis agent is added in the melted waste polyester for preliminary alcoholysis, and the alcoholysis agent is ethylene glycol. On one hand, alcoholysis reaction occurs when the waste polyester raw material are melted, and at the same time, the viscosity of the melted material is reduced. Thus, the melted material remains melted at the alcoholysis temperature and is not easy to solidify again after entering the alcoholysis tank, ensuring that the alcoholysis is carried out under homogeneous conditions.

Abstract: The present invention relates to a convenient fire fighting unit. The convenient fire fighting unit comprises a pick-up and a hand-lifting pump supported on an electric barrow; a lifting base fixed onto a cargo floor; each of the two sides of the lifting base is provided with a rear support seat, an intermediate support seat and a front hinged seat from the inside to the outside; the rear support seat is hinged with the rear end of a hydraulic cylinder; the intermediate support seat is hinged with the rear end of an intermediate connecting rod; the front hinged seat is hinged with the rear end of a front connecting rod; the electric barrow is provided on the lifting support plate; and the hydraulic cylinder is connected with a hydraulic assembly provided in the cargo box or on the lifting base.