System and method for compounding glycol and co-generating LNG by utilizing urban organic refuse

Abstract

The invention relates to a system for compounding glycol and co-generating LNG (Liquefied Natural Gas) by utilizing urban organic refuse. A straw receiving bin is connected with a pyrolysis device, acompressing device, a decarbonizing device and a deep cold separating device and then is connected with a methane purifying system, a CO purifying device and a hydrogen purifying system respectively;the hydrogen purifying system is connected with a glycol compounding device; the CO purifying device is connected with a O2 feeding device and a DMO compounding device and then is connected with the glycol compounding device; a garden garbage receiving bin, a kitchen waste receiving bin and a domestic waste receiving bin are connected with a pretreatment tank and an anaerobic digestion hydrogen-generating reactor in turn through a sorting device and a smashing device; an anaerobic sludge feeding bin is connected with the anaerobic digestion hydrogen-generating reactor; the anaerobic digestionhydrogen-generating reactor is respectively connected with the hydrogen purifying system and a first-level anaerobic digestion tank; the first-level anaerobic digestion tank is connected with a dryingdevice and a water storage tank through a solid-liquid separating tank, a first-level biogas slurry tank, and the like; the first-level anaerobic digestion tank is connected with the methane purifying system through a methane pot.

Description

technical field [0001] The invention relates to the field of energy and environmental protection, in particular to a system and method for synthesizing ethylene glycol from urban organic waste and co-producing methanol LNG. Background technique [0002] With the advancement of national urbanization and the improvement of residents' living standards, the generation of urban domestic waste in my country is increasing rapidly; according to statistics, by 2010, the annual production of urban domestic waste in the country has reached nearly 160 million tons. However, due to the long-term backwardness of my country's urban domestic waste treatment technology and insufficient investment in the construction of supporting facilities, most of the domestic waste has not been treated safely and effectively. came out and aroused widespread concern in the society. [0003] Currently, landfill and incineration technologies are mainly used for the treatment and disposal of municipal solid w...

AI Technical Summary

Problems solved by technology

my country's ethylene glycol production capacity and output have grown rapidly, but it still cannot meet the growing market demand for domestic polyester, and has to import a large amount every year, and the import volume is increasing year by year

In this situation, in addition to considering the use of advanced technology to tap the potential of the existing ethylene glycol production equipment, the relevant domestic enterprises have passed the appraisal of the results organized by the Chinese Academy of Sciences on March 18. This achievement marks my country's It is the first in the world to realize a complete set of "coal-to-ethylene glycol" technical route and industrial application. It is a world-first technology with independent intellectual property rights, but there is no precedent for using biomass materials to synthesize ethylene glycol.

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