Method for preparing synchronously synthetic gas and metal zinc

Abstract

A synchronization preparation method of syngas and metal zinc is provided. The invention relates to and belongs to the technosphere of energy source and metallurgy, in particular to a method to synchronic prepare syngas and metal zinc in a reaction process. The method has the operation that carbonate molten salt is used as reaction medium in a molten salt reaction vessel, by redox reaction of methane and zinc oxide powder, the synthesis gas of carbon monoxide and hydrogen and metal zinc are synchronously generated. The invention not only achieves the purposes of saving energy and reducing cost, but also avoids generating thermal dam and three wastes. The system simplifies the processing technique of the metal zinc and reduces the production cost; and new energy resource synthesis gas with great application value is achieved at the same time.

Description

technical field [0001] The invention belongs to the technical field of energy and metallurgy, in particular to a method for synchronously producing synthesis gas and metal zinc in one reaction process. Background technique [0002] The three pillars of energy in the world today are oil, coal, and natural gas. The current reserves of oil are estimated to be used by humans for less than 50 years. Therefore, finding alternatives to oil is the most urgent problem in the world today. Methane (CH 4 ) is the main component of natural gas, coalbed methane and methane hydrate (combustible ice). With the increasing depletion of oil resources, abundant methane resources will become one of the most promising alternative energy sources. Experts predict that by the 20th century, in the world's energy structure, methane will increase from the current 25% to 40%, thereby replacing oil as the world's most important energy source, and will also replace oil as the most important chemical raw ...

AI Technical Summary

Problems solved by technology

The steam reforming reaction is a strong endothermic process with high energy consumption, large and complex equipment, and expensive operation costs. Syngas generation accounts for about 60% to 70% of the total investment and production costs of the entire natural gas chemical industry, and needs to be improved and perfection

The carbon dioxide reforming process is also being studied now, but this process uses natural gas and carbon dioxide as raw materials, and only hydrogen (H 2 ) and carbon monoxide (CO) with a ratio of 1:1 is not conducive to subsequent reprocessing, and two species with high carbon content are used as raw materials for the reaction, and there will be serious carbon deposition problems

However, the partial oxidation technology that has been studied more at present requires the preparation of pure oxygen, and the investment and operating costs of the oxygen production plant are relatively expensive. The cost of syngas

[0004] On the other hand, the smelting methods of metal zinc are mainly pyrometallurgy and hydrometallurgy. my country’s pyrometallurgy now accounts for about 30% of the entire industry, and pyrometallurgy will emit a large amount of carbon dioxide (CO2) into the atmosphere. 2 ) and dust, causing serious environmental pollution; while zinc hydrometallurgy consumes a lot of electricity and discharges a lot of waste water, both of which have low energy utilization efficiency

Foreign researchers have used methane (CH 4 ) react with zinc oxide (ZnO) to produce synthesis gas and metal zinc, but the reaction system is methane (CH 4 ) and zinc oxide (ZnO) in direct contact with each other, the reaction efficiency is poor, and the heat utilization rate is low, mainly using zinc oxide (ZnO) to react methane (CH 4 ), to reduce the greenhouse gas methane (CH 4 ) for the purpose of discharge

Images