Biomass cell dissolving treatment process of solid-liquid mixed phase by quick flash evaporation

Abstract

The invention discloses a cell breaking process and system of a solid-liquid mixed phase by direct quick flash evaporation. The method comprises the following steps of: feeding biomass waste to a pulpifying reactor for heating and preheating; then, pumping into a hydrothermal reactor, and heating to reaction temperature; after hydrothermal reaction, performing direct depressurization and flash evaporation on a high-temperature high-pressure solid-liquid phase mixed material, wherein the material expands and is gasified severely, and the pressure is reduced quickly, and then, entering into a flash reactor; separating the depressurized material in the flash reactor from steam and entering into a cooling system for cooling; and directly dehydrating the cooled material or entering into an anaerobic digestion system for subsequent treatment. According to the invention, the mode of direct flash evaporation of the solid-liquid mixed phase rather than depressurized flash evaporation to the gas phase of the high temperature and high pressure reactor is adopted. The flash evaporation process of the process directly acts on the solid phase, so that the cell structure is more efficiently damaged, and intracellular matters are accelerated to be dissolved out.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a high-efficiency lysing and conditioning treatment method for biomass waste. Background technique [0002] With the development of social economy and the acceleration of urbanization, the generation of urban solid waste in my country has increased rapidly, and the types, components and properties of waste have also undergone tremendous changes compared with the past. In the early 1980s, the average content of muck in domestic waste was more than 80%, and the content of organic matter was less than 20%. At present, the content of kitchen waste organic matter in urban domestic waste has risen to about 50%, and municipal sewage plants produce a large amount of sludge, which also enters the waste treatment system. This type of organic waste has obviously different properties from other wastes. Its main characteristics are: large amount of generation, relatively concen...

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Problems solved by technology

[0005] 1) Biomass waste has a high content of organic matter and water content, making landfill compaction difficult, and produces a large amount of high-concentration, refractory leachate, which increases the burden on landfill facilities and leads to serious secondary pollution. produce large amounts of greenhouse gases;

[0006] 2) High moisture content leads to low calorific value of mixed waste, and auxiliary fuel is required for incineration treatment, which significantly increases incineration costs and brings the risk of dioxin-like pollutants;

Whether it is anaerobic digestion or dry incineration, it is necessary to pretreat the biomass waste, because most of the biomass waste is microbial cells, the water in the cells is difficult to dissolve, and the biodegradation rate is low

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