Method for continuously cooking grass raw materials and device
US10053816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Feb 28, 2037 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H11/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for continuously cooking grass raw materials, includes: (1) preparing grass raw materials by conventional dry or wet method to obtain a chopped grass; (2a) conveying the chopped grass into a T-shaped tube, adding a cooking liquor from a top of the tube and mixing with the chopped grass tube to obtain a forage; (2b) adding steam to the forage being in the horizontal tube, the forage being heated and going into a spherical mixer; (2c) adding a cooking liquor extruded by a dehydration spiral into the spherical mixer, mixing uniformly with the forage in the spherical mixer; (3) conveying the forage after the pre-cooking process to a digester, heating the cooking liquor by a heater arranged outside the digester, and sending the cooking liquor back to the digester for cooking the forage to obtain a pulp of the grass raw materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.