[Haichuan Project Updates] Shanxi Woneng Chemical’s 300,000 tons/year ethylene glycol plant comes online
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On August 21, Shanxi Woneng Chemical’s 300,000 tons per year ethylene glycol production facility came online, producing qualified ethylene glycol products. Located in the Ecological Industrial Park of Quwo County, Shanxi Province, this project has a total investment of nearly 4 billion yuan. It is a key chemical project in Shanxi Province and also the first facility in China to produce ethylene glycol using coke oven gas and converter gas. Company Two is responsible for constructing the main units for ethylene glycol synthesis, compression, and distillation. Once completed and put into operation, the project will produce 300,000 tons of ethylene glycol and 150,000 tons of liquefied natural gas per year. The project makes full use of the complementary advantages of converter gas, which has high carbon content and low hydrogen content, and coke oven gas, which has low carbon content and high hydrogen content, to produce ethylene glycol products with high added value. Meanwhile, the CH4 present in coke oven gas is used to produce LNG through cryogenic technology. The successful implementation of this project will set a precedent for the comprehensive utilization of converter gas and coke oven gas; this approach can reduce carbon emissions by 560,000 tons per year and nitrogen oxide emissions by over 700 tons compared to other methods of utilizing such gases.
China’s first plant to produce ethylene glycol using coke oven gas and converter gas
Is this the same project? —————————— Construction site of the ethylene glycol project at Shanxi Liheng Iron and Steel Group Co., Ltd. Author/Source: Date: 2019-02-27 Clicks: 26 On February 25th, upon visiting the construction site of Shanxi Liheng’s ethylene glycol and LNG co-production project, it was evident that various tasks such as concrete pouring, pipeline welding, and tank fabrication were being carried out in an orderly manner. To date, 85% of the civil engineering work and equipment foundations for this project have been completed, 50% of the buried pipelines have been installed, and the on-site fabrication of steel structures such as roof trusses, tanks, and pipe rack supports, along with the related equipment, has been fully underway. As a provincial key project, the ethylene glycol co-production LNG project is an important measure taken by the company to implement the transformation and development strategies set forth by the provincial party committee and the province’s leadership. This project is the first in China to utilize comprehensive waste gases such as coke oven gas and steelmaking converter gas to produce high-end ethylene glycol products. It takes full advantage of the complementary properties of converter gas, which has more carbon and less hydrogen, and coke oven gas, which has less carbon and more hydrogen, in order to manufacture high-quality fine chemical products. At the same time, the methane abundant in coke oven gas can be used to produce LNG (natural gas) through cryogenic technology, thereby achieving waste recovery, turning waste into resources, and realizing comprehensive utilization of resources. The project is equipped with first-class energy-saving and environmental protection equipment in China. Once completed, it will enable emissions of dust particles, sulfur dioxide, and nitrogen oxides to meet ultra-low levels; not only will this facilitate the recycling of resources, but it will also serve as a model for promoting the transformation and upgrading of traditional industries as well as the development of ecological civilization within the company.
In November 2017, Liheng Company established Shanxi Woneng Chemical Technology Co., Ltd., officially kicking off the project construction. Covering an area of over 800 mu, this project is the world’s first enterprise to produce ethylene glycol using various types of waste gases such as coke oven gas and converter gas. It is also a demonstration project for integrated steel production that has received special recognition from the Ministry of Industry and Information Technology.
The design of this process is quite clever; it’s somewhat similar to the previous approach of first extracting methane from coke oven gas before using it to produce methanol. The cost of ethylene glycol produced from coke oven gas should be relatively low.