Straw raw material clean co-production technology and efficient hot-pressing device

Abstract

The invention relates to a straw raw material clean co-production technology and an efficient hot-pressing device. The device is mainly composed of whole-system straw preparation raw material equipment, compression type raw material input equipment, a raw material cooking phase-change hydrolysis container, hydrolysate heat preservation, pressure maintaining, discharging and conveying equipment, ahydrolysate high-temperature high-pressure solid-liquid separation unit, liquid phase conveying equipment, liquid-phase hemicellulose and base material production equipment, solid-phase stirring and conveying equipment, a high-temperature and high-pressure defibrator unit, defibrated material heat preservation, pressure maintaining, discharging, steam exhausting, stirring and conveying equipment,a defibrated material high-temperature and high-pressure solid-liquid separation unit, defibration water-liquid circulation equipment, defibration steam purification, heat supply and heat source equipment, defibration vapour removal and recovery equipment and the like. The device has the beneficial effects that the textbook confinement of plant cooking, hydrolysate spraying and normal-state solid-liquid separation is broken through, and a clean co-production technology and efficient hot-pressing equipment taking plant cooking, defibration and heat and pressure preservation solid-liquid separation as cores are innovated, so that the last kilometer of efficient conversion between straw solid waste treatment and raw material utilization is broken through.

Description

technical field [0001] The invention relates to the fields of plant fiber and straw solid waste treatment, agricultural and rural ecology, straw raw materialization, clean production, circular economy, etc., and specifically relates to a straw raw materialization clean combined production technology and a high-efficiency hot-pressing device. [0002] technical background [0003] At present, the energy conversion of crop straw, that is, the direct combustion of agricultural and forestry waste biomass for power generation has begun to take shape; however, the raw material conversion of straw is relatively lagging behind due to the lack of advanced clean technology and key equipment for converting raw materials. [0004] As we all know, crop straw is mainly composed of three elements such as cellulose, hemicellulose and lignin. Therefore, only by using all the three elements of straw, that is, cleaning and combined production, can the pollution and pollution sources be eliminat...

AI Technical Summary

Problems solved by technology

[0006] At present, pulping and papermaking is a relatively mature traditional straw raw material; its main features are: firstly, it is a single paper product model, that is, while selecting and utilizing cellulose to make pulp, part of the hemicellulose and lignin are converted into pollutants. waste; secondly, the raw materials are input into high-temperature and high-pressure containers for cooking, and the solid-liquid phase change is hydrolyzed; thirdly, the hydrolyzed materials are subjected to solid-liquid separation after spraying and cooling; fourthly, the separated solid phases are prepared as papermaking raw materials, while the liquid phases are It is discharged or treated as sewage; therefore, it ends up wasting resources and polluting the environment

[0007] In particular, the current traditional plant pulping and papermaking generally adopts the basic technology and production equipment of "cooking hot-press phase change hydrolysis and spray cooling normal solid-liquid separation"; production efficiency, and increase the energy consumption and heat loss of straw cooking

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