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Kitchen waste phase separation production device and production method

A kitchen waste and phase separation technology, which is applied in the field of solid waste recycling, can solve the problems of easy acidification collapse of anaerobic system and difficulty in long-term stable operation, so as to improve the service life of equipment, save excessive water loss of materials, The effect of equipment maintenance cost reduction

Active Publication Date: 2017-05-31
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY +1
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  • Claims
  • Application Information

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Problems solved by technology

However, due to the high oil and high organic matter content of kitchen waste, which inhibits microbial activity, the anaerobic system is prone to acidification and collapse, making it difficult to operate stably for a long time

Method used

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  • Kitchen waste phase separation production device and production method
  • Kitchen waste phase separation production device and production method
  • Kitchen waste phase separation production device and production method

Examples

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specific Embodiment

[0058] A specific example is as follows:

[0059] The kitchen waste from the canteen is first manually sorted to remove large refractory materials such as chopsticks, bones, and plastic bags, and then broken into pieces before entering the blending pool 1. It is prepared from tap water or anaerobic fermentation tank reflux biogas slurry, adding 50% water, and the pH value is between 6 and 8. The feed liquid is pumped into the 10L steam spin wet heat pretreatment tank 2 through the slurry pump for pretreatment. The pretreatment temperature is 150°C and the heating time is 30 minutes. The pump outlet is equipped with an in-situ pressure gauge and a check valve is installed behind the pump.

[0060] At the same time as the damp heat pretreatment is completed, the automatic degreasing machine and cooling system are started to recover the grease, and the excess heat enters the heat accumulator 3, and the heat is stored and released through the three-item heat exchange self-insulati...

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Abstract

Provided is a kitchen waste split-phase energy generating device. An outlet of a heat conduction oil pipeline of a steam self-rotating damp and heat pre-treatment device is connected with a three-phase heat preserving device. A steam outlet is connected with a heat accumulator. After damp and heat pre-treatment ends, heat conduction oil and high-temperature waste heat of steam are recycled and stored in a three-phase heat exchanging and heat preserving unit. A bottom discharge port of the damp and heat pre-treatment device is connected with a screw-folded dehydrator so that solid and liquid separation can be performed. Kitchen waste on which damp and heat pre-treatment is performed enters a liquid-phase material fermentation tank to generate hydrogen through solid and liquid separated liquid phases; a solid-phase material fermentation tank is connected with an adjusting tank, and solid materials passing the screw-folded dehydrator enters the solid-phase material fermentation tank to generate methane through a conveying pump after parameter adjustment is performed. Heating coils of a liquid-phase fermentation tank and a solid-phase fermentation tank of an anaerobic fermentation unit are connected with the heat accumulator of the three-phase heat exchanging heat preserving unit, and heat preservation is performed on an anaerobic fermentation tank through a temperature-control electromagnetic valve. The kitchen waste split-phase energy generating device can achieve the split-phase energy generation of hydrogen and methane gas cogeneration of the kitchen waste and achieve the optimum energy conversion efficiency.

Description

technical field [0001] The invention belongs to the field of solid waste recycling, and in particular relates to a kitchen waste phase-separation and production capacity combination device. [0002] The present invention also relates to a method for phase-separating and producing energy from kitchen waste by using the above-mentioned device. Background technique [0003] In recent years, with the improvement of living standards and the rapid development of the tertiary industry, the catering industry has become an important part of China's economy and society. At the same time, the amount of kitchen waste is increasing year by year, and kitchen waste has become the main component of domestic waste. The average content of kitchen waste in the domestic waste of the seven major cities in the country reaches about 52%. In some areas, kitchen waste is simply piled up, breeding mosquitoes and flies, producing stench, causing environmental pollution, and posing a great risk to hum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B09B5/00
Inventor 贾璇席北斗祝超伟李鸣晓李娟刘东明宋彩红
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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