Multistage single-screw continuous steam explosion device for plant fibers

Abstract

The invention discloses a multistage single-screw continuous steam explosion device for plant fibers. The multistage single-screw continuous steam explosion device for the plant fibers is specifically designed to treat the plant fibers, is convenient to dismount and can be subjected to segmented temperature control. The multistage single-screw continuous steam explosion device structurally comprises a multi-segment rack, a multi-segment machine barrel, a multi-segment screw, a feeding device, a motor, a temperature control device and the like. The feeding device is mounted on a platform above a machine body and feeds uniformly and continuously, combined equipment can be adjusted according to specific circumstances of materials due to the structural design of the multi-segment rack, the multi-segment machine barrel and the multi-segment screw, and each segment of the explosion device can be subjected to separate parameter adjustment and control, such as temperature and material moisture content so as to realize segmented control. Due to the structural design that the machine barrel consists of an upper part and a lower part, the mounting / dismounting, screw replacement, cleaning and maintenance are convenient. Compared with the prior art, the steam explosion device has the characteristics that the number of stages is adjustable, the adjustment and control are segmented, the repair is easy, the energy consumption is low, the yield is high, the treatment effect is good, the material applicability is wide, the labor intensity is low, the automated control is convenient to realize, and the like.

Description

technical field [0001] The invention relates to a steam explosion device in the pretreatment process of biomass raw materials, in particular to a continuous steam explosion device for plant fibers. Background technique [0002] With the increasing shortage of resources and energy, people pay more and more attention to the development and transformation of biomass resources. At present, biomass is mainly used for paper pulping, alcohol production by fermentation, wood-based panels, fiberboards and wood-plastic composite materials, etc. However, the pretreatment technology of plant fibers is the key to realize the resource utilization of plant fibers. At present, the pretreatment technologies for plant fibers mainly include physical pretreatment, chemical pretreatment and other technologies. In recent years, a new physical-chemical pretreatment technology—steam explosion technology is attracting the attention of researchers for its advantages of high efficiency, no pollution,...

AI Technical Summary

Problems solved by technology

[0004] For different plant fiber raw materials, they require different steam explosion conditions, especially for woody plants, which have a high degree of lignification and a denser structure. One-time treatment cannot achieve the desired effect, and multiple times of single machine or series production of multiple equipment is required. Intermittent production leads to large production loss, high energy loss, low efficiency, high energy consumption, low production capacity, difficult control of process parameters, high labor intensity, low degree of automation, and high cost

Some plant fibers need to add modifiers during the treatment process, but the modifiers and plant fiber materials are not uniformly dispersed and cannot infiltrate into the material particles, resulting in poor reaction effects, and the types, contents and levels of modifiers in different stages The conditions required for the reaction may be different, and the temperature and pressure of the blasting process need to be adjusted

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