Screw extruding continuous steam explosion machine and control method

Abstract

The invention discloses a screw extruding continuous steam explosion machine and a control method. In the feeding process, materials are fed into a large hopper, and the materials falling from the large hopper are conveyed into a horizontal pipe of a feeding device by a reversible two-way screw conveyer or a pneumatic piston feeding pump moving back and forth by half a stroke of the feeding device. The outlet of the horizontal pipe is closed off through an anti-reverse-jet valve. After the horizontal pipe is filled with the materials, a piston of a hydraulic mechanism pushes the reversible two-way screw conveyer forwards; when pushed into a digester, the compressed materials in the horizontal pipe are smashed by a reciprocating adjustable air hammer and then fall into the digester. Saturated steam and compressed air enter the digester from an air inlet pipe, a variable-speed screw conveyer of the digester conveys the materials into an outlet, and the materials are extruded to the lower section of a round outlet pipe of a discharging device by a reciprocating pneumatic piston discharging pump in batches. A driving gear of a motor drives a basin-shaped gear to rotate intermittently so that a quick-opening valve with a rotating-wheel-type six-position water sealing ceramic valve element can be opened regularly to jet out the exploded materials treated by the digester.

Description

Technical field: [0001] The invention relates to a spiral extrusion continuous steam explosion mill and a control method. Background technique: [0002] "Steam Explosion Technology Principles and Applications" edited by Chen Hongzhang and Liu Liying Chapter 2 [Steam Explosion Technology Process and Technology Integration] Section 3 [Stake Process] Page 54 The continuous steam explosion process includes: biomass storage and Treatment device, StakeTech system, water extraction equipment, alkali extraction equipment, waste treatment equipment five parts. [0003] Biomass storage and processing device: Wood chips or chopped straw are piled up and transported by the airflow to the cyclone on the top of the storage tank, and the cyclone separates the material from the conveying airflow. The material falls directly into the storage tank from the cyclone, and then is transported by the screw conveyor to the belt scale with a cover plate, and the belt scale is used to measure the ma...

AI Technical Summary

Problems solved by technology

[0008] Chapter 3 [Steam Explosion Technology Related Equipment], Section 3 [Steam Explosion Equipment], Page 112, Section 3.3.2.2 [Continuous Steam Explosion Reaction Device]: Since the steam explosion reactor is a high-pressure vessel with steam as the reaction medium, continuous operation is not easy to achieve

But the cellulose in the straw is only 40%, and the rest is lignin and hemicellulose. The cost of separating the cellulose by boiling pulp is very high; and it also produces a large amount of sewage and odor, causing water and air pollution

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