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Intermediate-temperature drying method and device for biological film of garbage

A bio-drying and bio-film technology, applied in chemical instruments and methods, transportation and packaging, solid waste removal, etc., can solve the problems of negative environmental impact, low drying efficiency, etc., and achieve increased calorific value and high operating costs. , the effect of reducing the difficulty level

Active Publication Date: 2017-08-25
杭州科晟能源技术有限公司
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  • Claims
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Problems solved by technology

[0014] The purpose of the present invention is to solve the problems of low drying efficiency and negative impact on the environment in the existing waste treatment biofilm drying method, and to provide a waste medium temperature biofilm drying method and a drying device

Method used

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  • Intermediate-temperature drying method and device for biological film of garbage
  • Intermediate-temperature drying method and device for biological film of garbage
  • Intermediate-temperature drying method and device for biological film of garbage

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Embodiment

[0036] Example: A medium temperature biofilm drying device for garbage treatment, such as figure 2 Shown. The device includes a biological drying chamber 16, and an impermeable board is laid on the bottom surface of the biological drying chamber. The biological drying silo 16 is a square biological drying silo. Three sides of the biological drying silo are provided with walls, one side is an open side, and the top of the biological drying silo is open. The biological drying silo accumulates coarsely broken garbage 5, garbage The upper part is covered with a biological drying film 9 which is a high air permeability ePTFE biological drying microporous membrane. The outer side of the top wall of the biological drying chamber opposite to the opening side is provided with a film rolling mechanism 4 for winding the biological drying film. The opening side of the biological drying chamber is provided with a strip for pressing the biological drying film against the bottom surface of t...

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Abstract

The invention relates to an intermediate-temperature drying method and device for a biological film of garbage, and aims at solving the problems of low drying efficiency of an existing garbage treatment biological film drying method and negative effects caused by the treatment process on the environment. The method comprises the following steps: a, crushing the garbage; b, stowing the garbage, and covering with the film; c, bio-drying, namely, intermittently blowing air, and maintaining for 14-16 day, wherein the air blowing-in / air stopping time ratio of an air blower is 1: 5-1: 4; slowly increasing ventilating until the final air blowing-in / air stopping time ratio of the air blower is 1: 1.2-1: 0.8, wherein the temperature of a garbage pile is kept between 20-72 DEG C, and the oxygen content is kept between 2-8mg / L; and d, removing the garbage, namely, removing the garbage from a bio-drying bin. The invention also discloses the drying device for the abovementioned method. With the adoption of the method and the device, the temperature in the biological film drying process is increased; the calorific value of the dried garbage is increased by about 60-80%; and the water content can be decreased by about 18-23%.

Description

Technical field [0001] The invention belongs to the field of waste treatment, and relates to a domestic waste treatment and disposal technology, in particular to a method and a drying device for drying a medium temperature biofilm of waste. Background technique [0002] Municipal solid waste has become one of the serious problems that plague my country's urban environmental development. The mixed collection of solid waste in my country generally has the characteristics of high moisture content, low calorific value, and high organic matter in kitchen waste. High moisture will cause a series of technical problems in waste disposal, which are specifically: [0003] (1) The low calorific value of garbage decreases, the utilization rate of heat energy decreases, and the amount of combustion flue gas increases; [0004] (2) Increase of landfill leachate; [0005] (3) The different components in the garbage have serious adhesion to each other and poor mechanical sortability, which limits th...

Claims

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Application Information

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IPC IPC(8): B09B3/00
CPCB09B3/40
Inventor 张勇方朝军陈少卿王汝佩曹小利苏海涛胡林飞
Owner 杭州科晟能源技术有限公司
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