公开(公告)号：US20180194681A1

公开(公告)日：2018-07-12

申请号：US15740014

申请日：2016-06-30

Applicant: SUBCOAL INTERNATIONAL B.V.

Inventor： Lars JENNISSEN ,  Neville ROBERTS

IPC: C04B7/44 ,  C10L5/36 ,  C10L5/40 ,  C10L5/44

CPC classification number: C04B7/4423 ,  C10L5/363 ,  C10L5/40 ,  C10L5/403 ,  C10L5/406 ,  C10L5/44 ,  C10L5/442 ,  C10L5/445 ,  C10L2250/06 ,  Y02E50/10 ,  Y02E50/30 ,  Y02P40/126

Abstract: The invention provides a process for producing cement, the process comprising providing heat to a cement manufacturing process using a secondary fuel, wherein the secondary fuel comprises cellulose and plastic and is in the form of pellets of a size between about 3-25 mm thickness, having a calorific value of about 16 GJ/ton or more, and wherein said secondary fuel is supplied at a place between the kiln inlet and the first cyclone, wherein after formation of the cement clinker, the cement clinker is cooled and milled to cement powder. Preferably, the secondary fuel is supplied to the riser pipe or to a pre-kiln combustion chamber. Generally, the secondary fuel is provided at a place which allows the pellets to burn before coming in contact with the cement materials in the kiln, while it also does not rise into the cyclone, thereby preventing blocking of the cyclones.

公开(公告)号：US20200347468A1

公开(公告)日：2020-11-05

申请号：US16624345

申请日：2018-06-19

Applicant: SUBCOAL INTERNATIONAL B.V.

Inventor： Lars JENNISSEN

IPC: C21B5/02 ,  C21B5/00 ,  C21B5/06 ,  C21B7/16

Abstract: The invention relates to the use of pellets comprising one or more thermoplastic material(s) of more than 40%, based on the total dry weight of the pellets and one or more cellulosic material(s) of more than 20%, based on the total dry weight of the pellets, as a reducing agent in a process for making pig iron in a blast furnace. Said pellets can be provided in unground form, as a partial replacement of coke through the top of the blast furnace, or can be provided as reducing agent in the raceway in an amount of higher than 10 kg/ton iron.

公开(公告)号：US20240218278A1

公开(公告)日：2024-07-04

申请号：US18558561

申请日：2022-05-25

Applicant: Subcoal International B.V.

Inventor： Lars JENNISSEN

IPC: C10L5/46 ,  C10L5/08 ,  C10L5/40 ,  C10L5/44

CPC classification number: C10L5/46 ,  C10L5/08 ,  C10L5/406 ,  C10L5/442 ,  C10L2290/28 ,  C10L2290/30

Abstract: The invention relates to a method to produce powdery alternative fuel by milling pellets, which pellets are produced by: (i) providing waste material comprising one or more thermoplastic material(s) of more than 40%, based on the total dry weight of the waste and one or more cellulosic material(s) of more than 30%, based on the total dry weight of the waste, wherein the waste has a particle size distribution with more than 80 wt % larger than 5 mm and more than 95 wt % smaller than 60 mm, having a water content of about 8 wt % or less; (ii) subjecting the waste material through a pelletiser with holes between 4-8 mm, and a length ratio of more than 10, such that the output temperature is about 85° C. or lower, (iii) subjecting the pellets through a second pelletiser with holes between 2 and 8 mm, and a length ratio of more than 14, such that the output temperature is about 110° C. or higher; (iv) to provide pellets, (v) and the pellets are cooled to a temperature of about 30° C. or lower. The powdery alternative fuel can be transported in bulk and through blowing lines.

公开(公告)号：US20170130958A1

公开(公告)日：2017-05-11

申请号：US15129885

申请日：2015-04-07

Applicant: Subcoal International B.V.

Inventor： Lars JENNISSEN ,  Ralph KOEKKOEK

IPC: F23G5/033 ,  F23G7/12 ,  F23G5/08 ,  C10L5/36 ,  C10L5/40

CPC classification number: F23G5/033 ,  C10L5/363 ,  C10L5/366 ,  C10L5/40 ,  C10L5/403 ,  C10L5/406 ,  C10L2250/04 ,  C10L2250/06 ,  C10L2290/02 ,  C10L2290/28 ,  F23G5/08 ,  F23G7/12 ,  F23G2201/70 ,  Y02E20/12 ,  Y02E50/30

Abstract: The invention relates to a process for firing an industrial furnace, in particular for electricity generation, wherein coal or cokes together with a secondary fuel comprising cellulose and plastic, in the form of pellets of a size larger than about 3 mm thickness, and having a caloric value of about 16 GJ/ton or more is ground to a powder wherein about 95 wt % or more has a particle size smaller than 2 mm and wherein the d50 of the particle size distribution is between about 5 and about 100 μm, wherein the powder is injected in the flame of the furnace. In this process the grinding is performed in a roller mill or ball mill, and the amount of pellets used together with the coals preferably is about 3 wt % or more, relative to the coal.