A cross-flattened multi-longitudinal vortex flow tube and its reactor

Abstract

The invention discloses a cross-flattened multi-longitudinal vortex flow tube and a reactor thereof. The transition section between sections, several of the pipe body sections are a combination of flat elliptical cross-section pipe sections whose cross-sectional long axes cross each other and / or a combination of flat elliptical cross-section pipe sections and circular cross-section pipe sections arranged alternately; wherein, the pipe The outer wall of the body segment is inwardly recessed and an oblique protrusion is formed on the corresponding inner wall. The pipe of the present invention has a simple manufacturing process and low manufacturing cost. Under the action of multiple cross-flattened structures and oblique protrusions, multiple longitudinal vortices and mixed swirls can be generated in the pipe to avoid material deposition in the pipe to cause blockage; The reactor has the characteristics of a tube to ensure the safe, reliable and efficient operation of the reactor for a long period of time, and at the same time significantly strengthen the reaction between materials, making the reaction uniform and efficient.

Description

technical field [0001] The invention relates to the technical field of organic solid waste treatment, in particular to a cross-flattened multi-longitudinal vortex flow tube and a reactor thereof. Background technique [0002] With the rapid development of urbanization in my country, the total amount of organic solid waste produced in my country's cities is rising steadily. How to treat and dispose of organic solid waste reasonably and efficiently, especially a large amount of domestic garbage, urban sludge and kitchen waste, has become an important issue. At present, it is an important and urgent demand for the sustainable development of urbanization in my country. Organic solid waste refers to solid and semi-solid organic waste that pollutes the environment produced by humans in production and living activities. Organic solid waste generally includes municipal sludge, industrial sludge, kitchen waste, domestic waste, especially wet waste, River sediment, high-concentration ...

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Problems solved by technology

[0003] However, there are also some deficiencies in the above-mentioned horizontal tank-type reactor: one, the tanks of a plurality of continuously stirred step-down liquids arranged in the reactor have low-speed zones, eddy current dead zones, etc. in the tanks, especially for organic The solid waste slurry has the characteristics of easy layered deposition, high viscosity, easy bonding and easy scaling, which seriously affects the overall reaction efficiency and prolongs the reaction time, and there is serious fouling in the tank reactor, which seriously Scale may cause equipment and pipeline blockage, and also seriously affect the quality of the reaction product. Due to the above reasons, etc., the reaction efficiency is low, the reaction time is long, and the failure rate is high; secondly, due to its low reaction efficiency and reaction The longer time also makes its structural size larger and its floor area larger, and the investment in equipment is higher; third, multiple mechanical agitators are installed, and the agitation is prone to leakage, failure or even safety accidents, especially the agitation of the tank. Insufficient and uneven, affect the reaction efficiency and reaction time, and also increase energy consumption; Fourth, for the wet oxidation treatment of industrial solid waste, higher temperature and pressure are required, but the pressure of the tank reactor is limited (generally 2MPa), the process parameters (temperature, pressure) are low, and it is difficult to achieve higher pressure and temperature process parameters, such as subcritical and supercritical wet oxidation processes, making it difficult to realize the wet oxidation treatment of industrial high-risk solid waste storage tanks

The tank reactor of the thermal hydrolysis process also has the disadvantages of easy scaling, blockage, insufficient and uneven reaction, long reaction time, and low reaction parameters of the above-mentioned wet oxidation process tank reactor.

[0006] Patent documents: non-clogging penetrating mixing swirl tubular reactor (201711035436.4), penetrating mixing swirling tubular reactor (201711034277.6), etc. provide sludge tubular reactors to solve the reaction of sludge in the reaction process Inhomogeneity, especially the problems of flow stratification, deposition, adhesion and fouling; but the patent document: The manufacturing process of non-clogging through-mixing swirl tube reactor (201711035436.4) is too complicated, and the reactor needs a large number of openings on the reaction tube. Holes and welding a large number of swirl strengthening parts, the equipment manufacturing quality assurance and supervision are difficult, and the manufacturing cost is high; The risk of clogging by large debris, because even if the organic solid waste slurry is filtered, it is inevitable that there will still be filamentous (such as hair) and small pieces and small flakes (such as plastic bags) debris

Therefore, it is difficult for the existing tubular reactor to realize the wet oxidation process of organic solid waste sludge with high efficiency, high reliability and low cost

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