CO2 zero-emission coal-to-methanol system and method for chemical hydrogen production and application

Abstract

The invention relates to a CO2 zero-emission coal-to-methanol system and method for chemical hydrogen production, and application of the CO2 zero-emission coal-to-methanol system and method. The system comprises an air separation device, a coal gasifier device, a synthesis gas purification device, a methanol synthesis and rectification device, an H2S preparation device, an SO2 preparation device, a Bunsen reaction device and an HI decomposition device. According to the CO2 zero-emission coal-to-methanol system for chemical hydrogen production, the water-gas conversion link in the traditional coal chemical process is omitted, and the technological process is simplified; meanwhile, CO2 is not generated in the whole production process, so that the coal consumption and the energy consumption of the system are greatly reduced under the condition of generating the same quantity of chemical products, the scales of the coal gasifier and the synthesis gas purification device are also greatly reduced, the system investment is reduced, the energy utilization efficiency of the system is greatly improved, and the economic benefit of the system is also improved; and zero emission of CO2 in the coal chemical process is achieved, and efficient and clean utilization of coal with low energy consumption and low emission is achieved.

Description

technical field [0001] The invention relates to a CO for chemical hydrogen production 2 Zero-emission coal-to-methanol system and method and application. Background technique [0002] Achieving carbon peaking and carbon neutrality is a tough battle. Under the "dual carbon" goal, the rise and fall of coal-based energy is related to the upstream and downstream sectors of coal, coal power and coal chemical industry, and the impact is very heavy. Based on my country's energy endowment of "rich coal, poor oil, and little gas", under the dual constraints of ensuring national energy security and addressing climate change, it is beneficial to develop a modern coal chemical industry and take a path of energy transformation and development with unique Chinese characteristics. Realize the clean and efficient comprehensive utilization of coal, realize the independent and controllable industrial chain and supply chain, and reduce the dependence on foreign oil. [0003] Due to the struct...

AI Technical Summary

Problems solved by technology

However, limited by the installed capacity of nuclear power, the total amount of hydrogen produced by the thermochemical iodine-sulfur closed cycle hydrogen production associated with nuclear power is difficult to meet the hydrogen demand under the goal of carbon neutrality

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