On July 10, 2021, good news came from Etuoke Banner Jianyuan Coal Chemical Technology Co., Ltd. (hereinafter referred to as “Jianyuan Coal Chemical”). Its 260,000 tons/year ethylene glycol production unit from coke oven tail gas was successfully put into operation. , successfully produced polyester grade ethylene glycol, with product purity reaching 99.94%, and all indicators meeting the GB/T4649-2018 standard. The project uses the syngas-to-ethylene glycol technology of Shanghai Pujing Chemical Technology Co., Ltd. (hereinafter referred to as “Pujing Chemical”).
Jianyuan Coal Chemical’s 260,000 tons/year coke oven gas to ethylene glycol project started the esterification compressor on June 29, and the ethylene glycol synthesis was ready to start; June 29 The system successfully added oxygen at 22:49 on June 30, and the qualified dimethyl oxalate was sent to the hydrogenation unit at 02:47 on June 30, and the crude ethylene glycol product was sent to the distillation unit at 06:41; on July 8, 8 :00The entire system process is connected and polyester-grade ethylene glycol is produced. Currently, the production load of a single set of ethylene glycol units reaches 95%, and the production equipment is operating stably.
This device is the sixth ethylene glycol industrialization project case authorized by Pujing Chemical. Using coke oven tail gas as raw material, compared with coal-to-ethylene glycol, it not only realizes the resource utilization of tail gas, is environmentally friendly, has lower cost, and has strong market competitiveness.
Project Overview
Located in Etuoke Economic Development Zone The coke oven exhaust gas-to-ethylene glycol project of Tuoke Banner Jianyuan Coal Coking Co., Ltd. adopts the world’s first coke oven exhaust gas-to-ethylene glycol device, which can use all the more than 2.8 million tons of coke oven exhaust gas generated by the company’s coking plant to make ethylene glycol. Ethylene glycol, after the project is completed, it will become the world’s largest ethylene glycol production base from coke oven exhaust gas.
Etuoke Banner Jianyuan coal coking coke oven gas production of 260,000 tons/year ethylene glycol adopts Shanghai Pujing Chemical’s synthesis gas to ethylene glycol technology. Designed by Hualu Engineering Company, it is the world’s first coke oven exhaust gas-to-ethylene glycol production device. The total investment of the project is 6 billion yuan, and construction will start in 2018. In October 2020, the air separation was put into operation.
Compared with traditional coal-to-ethylene glycol projects, the investment and land occupation of coke oven gas-to-ethylene glycol are relatively low. The project construction does not involve the main equipment of the coal-to-ethylene glycol gas production section, such as coal storage and transportation equipment, gasifiers, conversion, low-temperature methanol washing equipment, black water treatment equipment, sulfur recovery equipment and liquefied gas stations; air separation and Boilers are also smaller than coal-based ethylene glycol of the same scale. From the perspective of resource utilization and environment, the secondary use of coke oven tail gas from coking unit exhaust gas as raw material to produce ethylene glycol is conducive to reducing environmental pollution, and is in line with the relevant national industrial policies for the development of green coking and new materials industries.
Ethylene glycol is an important chemical raw material and is widely used in industry, agriculture and other fields. After the Jianyuan Coal Coking Coke Oven Tail Gas to Ethylene Glycol project was put into operation, it not only reduced carbon emissions by 290,000 tons per year, but also allowed enterprises to “squeeze out all the available value” of coal, realizing the integration of coal, coke, chemical Interlocking and cyclical development.
Jianyuan Coal Coking Company was established in November 2005. It is a modern comprehensive enterprise invested and constructed by Inner Mongolia Sanwei Resources Group that integrates coal mining, coal washing, coking and chemical industry; The company is located in Qipanjing Town, Etuoke Banner, Ordos City, with a registered capital of 400 million yuan and 1,200 employees. It currently consists of three subsidiaries: a coal washing plant with a production capacity of 3 million tons and a coking plant with a production capacity of 1 million tons. The coal chemical industry chain The company has begun to take shape, and its products include coking coal, clean coal, medium coal, tar, crude benzene, ammonium sulfate, sulfur, and chemical products such as pure benzene, toluene, and xylene by refining crude benzene. </p
