公开(公告)号：US20160231230A1

公开(公告)日：2016-08-11

申请号：US15027179

申请日：2014-11-18

Applicant: VERSALIS S.P.A.

Inventor： Francesco BONACINI ,  Erik MANTOVANI ,  Angelo FERRANDO

IPC: G01N21/27 ,  C08F112/08 ,  G01N21/359

CPC classification number: G01N21/272 ,  C08F112/08 ,  G01N21/3577 ,  G01N21/359 ,  G01N21/8507 ,  G01N2201/061 ,  G01N2201/0826 ,  G01N2201/13

Abstract: The present invention relates to a method for monitoring a control parameter of a polymerization reaction mixture in heterogeneous phase comprising the following steps: (a) acquiring at least one NIR reflectance spectrum of said mixture; (b) calculating a value of said control parameter by means of a calibration curve which correlates the NIR reflectance spectrum with the values of said control parameter measured with a reference measurement method. The present invention also relates to an apparatus for implementing said method.

Abstract translation: 本发明涉及用于监测异相聚合反应混合物的控制参数的方法，包括以下步骤：（a）获得所述混合物的至少一个NIR反射光谱; （b）通过校正曲线计算所述控制参数的值，该校准曲线将NIR反射光谱与用参考测量方法测量的所述控制参数的值相关联。 本发明还涉及一种用于实现所述方法的装置。

公开(公告)号：US20250101311A1

公开(公告)日：2025-03-27

申请号：US18725824

申请日：2022-12-27

Applicant: Versalis S.p.A.

Inventor： Riccardo FELISARI ,  Armando GALEOTTI ,  Mirco NODARI ,  Antonio PONTICIELLO ,  Angelo FERRANDO ,  Fabio ASSANDRI

IPC: C10B53/07 ,  B01J6/00 ,  C08J11/12 ,  C10B57/14

Abstract: This invention relates to the processing of plastics materials for re-use and valorisation in chemical recycling processes for the re-use of substantially plastics materials otherwise destined for disposal.
In particular the invention relates to a process for the pyrolysis of substantially plastics material to obtain at least liquid hydrocarbons that are in the liquid state at 25° C. comprising the following steps: a) feeding the substantially plastics material optionally already in the molten and/or preheated state to a pyrolysis reactor; b) bringing said material in said pyrolysis reactor to a temperature of between 330° C. and 580° C. in the substantial absence of oxygen and at a pressure of between atmospheric pressure and 13 bar (a); c) holding said material in said pyrolysis reactor at a temperature of between 330° C. and 580° C. for a time sufficient to produce at least one effluent in the gaseous state in said pyrolysis reactor; d) adjusting the pressure in said pyrolysis reactor in relation to characteristic parameters defined by the composition of said substantially plastics material and/or characteristic parameters defined by the products of said pyrolysis process, while maintaining said pressure at a value of between atmospheric pressure and 13 bar (a); e) partly or totally condensing said effluent in the gaseous state so as to form at least one fluid comprising liquid hydrocarbons that are in the liquid state at 25° C. which quantitatively is at least 10% by mass with respect to the mass of substantially plastics material fed; f) the process being characterized by the fact that the pressure adjustment of step d) has low latency.