High temp. dry distillation treatment method for urban domestic refuse

Abstract

The present invention utilizes traditional coking equipment, tar-recovering equipment and gas-purifying and recovering equipment to implement high-temp. pyrogenic distillation treatment of urban domestic life refuse, and includes the following steps: 1. using mechanical separation method to separate out organic light components from life refuse as raw material or pyrogenic distillation; 2. processing organic light refuse and making it into a certain grain size; 3. mixing the processed organic light refuse with coal according to a certain mixing ratio and making high-temp. pyrogenic distillation treatment to produce coke, tar and gas simultaneously; and 4. recovering all the product to implement harmless treatment of domestic refuse.

Description

[0001] Field [0002] The invention belongs to the technical field of municipal solid waste treatment, in particular to light organic waste in municipal solid waste, including waste plastics, waste rubber, waste paper, plants, leaves, leather, fabrics and other single components and mixed components in coking ovens High temperature dry distillation treatment method. Background technique [0003] With the rapid development of world economy and science and technology, the improvement of people's material living standards and the acceleration of urbanization, the output of urban solid waste has increased sharply. According to statistics, the current annual output of municipal solid waste in my country has exceeded 150 million tons, and is growing at a rate of 8% to 10% every year. [0004] At present, my country's municipal solid waste treatment and disposal technology is still dominated by sanitary landfill and open-air stacking, accounting for 79.2% of the total treatment capa...

AI Technical Summary

Problems solved by technology

[0009] Disadvantages: small capacity reduction, occupying a large amount of land, difficult to recycle waste resources, prone to groundwater pollution and methane gas pollution

[0012] Disadvantages: large one-time investment, low utilization rate of waste resources, easy to produce secondary pollution, especially dioxin and heavy metal pollution

[0015] Disadvantages: limited capacity reduction, relatively low processing temperature, weak pollution control, can only process fermentable biomass, and it is difficult to process light organic components such as waste plastics, waste rubber, waste paper, leather, and fabrics in garbage

Japanese patents, patent numbers JP2001187406, JP2001323280, JP2001139952, JP2001123180, JP2002012876, etc. are limited to the use of coke ovens to treat waste plastics and mix waste plastics with coal for coking. This series of methods involves extracting waste plastics from municipal solid waste as coking In the case of the co-coking of furnace and coal, the raw materials must go through a very strict and complicated sorting and processing process, and finally only waste plastics in the garbage are used as raw materials, so the process is very complicated, and the energy consumption and cost are high.

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