Production system for comprehensively utilizing salt lake resources to achieve magnesium metal integration and method thereof

Abstract

The invention discloses a production system for comprehensively utilizing salt lake resources to achieve magnesium metal integration. The production system comprises a magnesium metal production device, a device for producing PVC through ethylene produced by direct chlorination methanol decomposition, a device for producing PVC with the calcium carbide method, a soda ash production device and a calcium chloride production device, wherein all the devices are connected in sequence, and the product of the last one device is the raw material of the next device. The chlorine in the production system is the byproduct and can be directly used in the PVC production, the production trend of the magnesium metal item chlorine is achieved, the source of the PVC item chlorine is also achieved, and dual purposes are achieved; the raw limestone is firstly used in calcium carbide production and then used in sodium carbonate production through carbide slag, the calcium chloride is produced or the brine is adjusted through the alkali liquor, multi-level combination using is achieved, and the resource utilization ratio is greatly improved.

Description

technical field [0001] The invention belongs to the field of resource comprehensive utilization of chemical products, and in particular relates to a production system and method for comprehensively utilizing salt lake resources to realize metal magnesium integration. Background technique [0002] Qinghai is a resource-rich province with many types of resources. The Qaidam Basin is China's "treasure basin". The representative resources of Qinghai are salt lake resources. The total reserves of various salts in Chaerhan Salt Lake alone reach more than 60 billion tons. Up to 4 billion tons, accounting for more than 40% of the world's total liquid magnesium resources. In addition, Qinghai is also rich in hydropower, photovoltaic, natural gas, limestone, coal, lithium, strontium and other resources. The development and comprehensive utilization of salt lake resources have broad prospects and occupy a very important position in the national economy. [0003] With the in-depth adv...

AI Technical Summary

Problems solved by technology

The start-up and implementation of the Phase I and Phase II projects of Qinghai Salt Lake Industrial Chemical Co., Ltd. have further extended the development of potassium resources, and kicked off the development of sodium resources and chlorine resources. However, the overall development scale is not large and is still in its infancy. The circular economy industry chain not yet fully constructed

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