High-quality high-efficiency water-gas shift method and device

Abstract

The invention discloses a high-quality high-efficiency water-gas shift method and a device. The invention adopts domestic wastes, kitchen wastes, municipal sludge, biomass and other carbon-containing substances or carbon-containing wastes as raw materials, and realizes a high-quality high-efficiency water-gas shift reaction by introducing water vapor under an air-isolated (oxygen-free) condition and performing microwave induction. The invention has a simple process, convenient operations, low running cost, short reaction time, low energy consumption, a high conversion rate, and widely-applicable raw materials; no catalyst is required; no coking phenomenon occurs; the prepared water gas has high quality, that is, a high H2 content; the H2 / CO (volume ratio) is almost maintained to be about 2:1, which greatly reduces the purification and refining cost in subsequent procedures; biological fuel oil with low cost and high quality is prepared through FT (Fischer-Tropsch) synthesis, which can substitute scarce petroleum resources.

Description

technical field [0001] The invention relates to the fields of energy, energy conservation and environmental protection, and specifically refers to a high-quality and high-efficiency water-gas conversion method and device. Background technique [0002] With the rapid development of my country's economy, energy consumption is also increasing day by day. my country has become the world's largest energy-consuming country. The problem of energy depletion has seriously hindered the healthy development of my country's economy. It is estimated that by 2020, my country's oil supply gap will be 250 million tons, and the dependence on foreign countries will be as high as 54%. The oil crisis will inevitably become an important issue that endangers national security affairs. The earth's limited resources - the massive exploitation and use of fossil fuels (oil, coal, natural gas, etc.), on the one hand has accelerated the process of the global energy crisis, on the other hand it has destr...

AI Technical Summary

Problems solved by technology

These patents must use catalysts, which are prone to poisoning and have relatively strict requirements on raw materials and process conditions, so it is difficult to apply to hydrogen production from various raw materials (such as domestic waste, kitchen waste, urban sludge, biomass waste, etc.) or water gas

[0005] In addition, the patent "A Biomass and Coal Mixed Fluidized Bed Gasification Method and Its Device" (CN1557919), although no catalyst is used, because the gasifier adopts the intermittent and alternating work of air combustion and steam gasification On the one hand, the quality of the generated water gas is unstable, on the other hand, the heat exchange efficiency is low

The patent "a method for controlling the temperature of internal heat and low-temperature dry distillation of gas and improving the quality of gas" (CN101497802) requires the use of oxygen-enriched combustion for heating, which has high production costs, and the highest hydrogen content in water gas can only reach 40-50vol%

The patent "Method for producing biodiesel from microwave irradiated sludge" (CN1850943) uses microwaves, but needs to add 1-10wt% wave-absorbing medium to the raw materials, and the water gas production rate is not high (most of the raw materials are converted for solid carbon)

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