Unlock instant, AI-driven research and patent intelligence for your innovation.

Comprehensive recycling method for papermaking waste residues and mixing extruding device thereof

A papermaking waste residue, mixing and extrusion technology, applied in the field of methods and special processing devices, can solve the problems of papermaking waste residue complex composition, complicated process, and increased burden on enterprises, and achieve resource utilization and harmless utilization, process and equipment Simple, no secondary pollution effect

Inactive Publication Date: 2019-08-23
王建明
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex composition and large quantity of papermaking waste residue, it is difficult to classify and screen in the actual treatment process, and the cost is high, which is unbearable for enterprises.
Separated inorganic substances, waste metals, waste polymers (waste plastics, etc.), pulp, combustible bottom slag and other substances must be processed separately through different equipment and processes; and the classification process also has complex processes and investment The problems of high operating costs and re-pollution have increased the burden on enterprises
Therefore, the existing papermaking waste treatment methods are not only complicated in equipment and process, but also have high operating costs, which are unbearable for enterprises, and it is difficult to meet the ecological and environmental protection target requirements of papermaking waste recycling and harmlessness.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Comprehensive recycling method for papermaking waste residues and mixing extruding device thereof
  • Comprehensive recycling method for papermaking waste residues and mixing extruding device thereof
  • Comprehensive recycling method for papermaking waste residues and mixing extruding device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, firstly, the raw material is pretreated, and the waste residue produced in the waste paper recycling papermaking production is taken, and most of the moisture is removed through drying in the air and drying machine, so that the water content in the waste residue is not more than 10%; Carry out mixing and regeneration treatment, use a special mixing and extrusion device to mix and extrude the above waste residue, the heating temperature during mixing is 150-350 degrees, the heating temperature can be adjusted at any time according to the status of the waste residue, and the extruded product can be processed by The mold can be used directly to make utensils, or it can be used as a raw material after cooling.

Embodiment 2

[0020] Embodiment 2, at first to raw material pretreatment: take the waste slag that waste paper regenerated papermaking produces, get rid of most of moisture wherein through airing and dryer drying, keep the water content in the waste slag not more than 10%; The waste slag is mixed and regenerated, and the above waste slag is mixed and extruded by a special mixing and extruding device. During the mixing and regeneration process, some polyethylene (PE) or polypropylene (PP) plastics are added as auxiliary materials together with the waste slag. For mixing, the amount of auxiliary materials added is 15-20% of the weight of the mixing waste residue, and the heating temperature during mixing is controlled at 200-300 degrees. Adding a certain amount of polyethylene (PE) or polypropylene (PP) as an auxiliary material to mix and co-extrude the waste residue is mainly to improve the characteristics and reprocessing performance of the compounded material, and to broaden the scope of ap...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a comprehensive recycling method for papermaking waste residues and a mixing extruding device thereof. Papermaking waste residues are dried to remove water, so that moisture content is not greater than 10%; and an extruder is utilized to mix and extrude the waste residues. A screw is spliced into a screw barrel, and the screw adopts a composite structure rod body; threads are arranged on the front part and the middle part of the screw; a rod body mixing column is arranged on the rear part of the screw; a barrel body mixing column which corresponds to the rod body mixingcolumn is arranged on the screw barrel; and the barrel body mixing column and the rod body mixing column are arranged in a forked and buckled mode. A mixing process is adopted, so that papermaking waste residues are heated in the screw barrel and are extruded and pushed by the screw, are repeatedly sheared in a radial direction through the rod body mixing column and the barrel body mixing column,and various components are forcibly mixed, and therefore, the waste residues are sufficiently mixed, cross-linked and degenerated in an outlet barrel, an available plastic composite material is regenerated, and the plastic composite material can be directly used for manufacturing an appliance or can be used as a raw material. The process and the equipment further can be widely applied to urban garbage disposal.

Description

technical field [0001] The invention belongs to the technical field of papermaking waste slag recovery and utilization, and in particular relates to a comprehensive recycling method and special processing device for waste slag produced in waste paper recycling and papermaking. Background technique [0002] Making paper from waste paper not only saves resources, but also helps reduce environmental pollution. However, due to the complex composition of waste paper and various impurities, it cannot be fully utilized, and a large amount of "recycled papermaking waste residue" will be generated in its production. According to incomplete statistics, the waste slag produced by recycled paper production in the country reaches 15-16 million tons per year. The composition of these papermaking waste residues is very complex, generally containing waste metals, waste polymer materials (waste plastics, etc.), paper pulp, combustible bottom slag and inorganic substances. The complex compo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/67B29C48/565B29C48/525B29C48/285B29C48/685B29K23/00
CPCB29C48/285B29C48/525B29C48/565B29C48/67B29C48/687B29K2023/06B29K2023/12
Inventor 王建明
Owner 王建明