Kitchen garbage heat pump drying and MVR concentration treatment device and process

Abstract

The invention discloses a kitchen waste heat pump drying and MVR concentration treatment device which comprises a kitchen waste heat pump low-temperature multi-effect drying system, a garbage leachate steam mechanical compression concentration system, a presser and a stock solution pool. A heat pump technology is adopted for low-temperature drying design of kitchen garbage, multiple-effect energy saving such as sensible heat recovery, first-stage surface cooling, second-stage surface cooling, first-stage condensation, second-stage condensation and an energy-saving heat exchanger is arranged, a unit can efficiently circulate, and garbage leachate is concentrated by using a mechanical vapor recompression (MVR) technology. Compared with a traditional kitchen waste treatment process, the water content of the kitchen waste can be greatly reduced, the energy consumption level is obviously reduced, and clean exhaust and drainage can be achieved. According to the research result, a kitchen waste comprehensive treatment technology which is efficient, energy-saving, ecological, environment-friendly, economical and feasible is provided, and a direction and an implementation way can be provided for recycling, harmlessness, stabilization and energy utilization of the kitchen waste.

Description

technical field [0001] The invention relates to the technical field of kitchen waste treatment, and more specifically relates to a kitchen waste heat pump drying and MVR concentration treatment device and process. Background technique [0002] At present, the trend of high integration of scientific and technological innovation, ecological environment construction, and ecological civilization development is positive. In our country, people's awareness of environmental protection is increasing day by day, garbage classification is in the implementation stage, and the treatment technology for kitchen waste is also gradually developing. However, the following problems still exist in the treatment process of kitchen waste in garbage treatment plants: [0003] Landfill leachate is a secondary pollutant produced during garbage disposal in urban landfills. It has complex components, high content of organic matter, ammonia nitrogen, and heavy metals, odor, imbalance of microbial nutr...

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Problems solved by technology

Drying equipment at home and abroad mainly include three-way rotary cylinder dryers, fluidized bed dryers, paddle dryers, disc dryers, belt dryers, high-temperature heat pump dryers, etc., which mostly use high-temperature baking, etc. The method with higher temperature is easy to burn and has the risk of explosion, and the exhaust gas treatment is more difficult; during the drying process, the heat loss is too large and the energy utilization rate is low

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