The first core piece of equipment for the energy-saving and environmental-protection upgrade project of Shanxi Cauliflower Coal Chemical Industry has been installed
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Recently, at the construction site of the Orchid Gasification Project, a key project in Shanxi Province undertaken by China Chemical Sideng Engineering Co., Ltd., the second converter R611003 of the transformation and cooling unit was slowly lifted, smoothly rotated, and precisely positioned with the help of the massive arms of a 750-ton class crawler crane. The entire lifting process was carried out seamlessly, with errors kept within the millimeter range. The successful completion of the lifting task for the first piece of equipment marks the official entry of the project into the equipment installation phase, thereby accelerating the progress of subsequent work. On October 10, 2024, Orchid Innovation and Technology announced its intention to invest in the energy-saving and environmental-protection upgrade project for Shanxi Orchid Coal Chemical Co., Ltd. The total estimated investment for the project is 3.962 billion yuan. It is expected that after the renovation is completed, the annual production will amount to 490,000 tons of synthetic ammonia (based on 7,200 hours per year), 140.04 million standard cubic meters of purified gas, 560,000 tons of urea. Additionally, 94,400 tons of liquefied natural gas (LNG) and 56,200 tons of 98% concentrated sulfuric acid will be produced as by-products. According to the information published on Shanxi Broccoli’s official website in September 2024, the details of the energy-saving and environmental-protection upgrade project carried out by the coal chemical company are as follows.
Shanxi Chinese Cabbage Coal Chemical Co., Ltd. is a wholly-owned subsidiary of Shanxi Chinese Cabbage Technology Entrepreneurship Co., Ltd. (600123.SH). Orchid Innovation (600123.SH) issued a announcement on October 10, 2024, stating that it plans to invest in the energy-saving and environmental protection upgrade project for Shanxi Orchid Coal Chemical Co., Ltd. It is understood that Shanxi Chinese Cabbage Coal Chemical Co., Ltd. currently has a synthetic ammonia (alcohol) production facility with an annual capacity of 190,000 tons, as well as a urea production facility with an annual capacity of 300,000 tons. The company plans to integrate Lanhua Clean Energy Company, Lanhua Chemical Branch, and Lanhua Yanghua Branch, bringing together a total production capacity of 260,000 tons per year of synthetic ammonia, 560,000 tons per year of urea, 230,000 tons per year of methanol, 100,000 tons per year of dimethyl ether, and 152 million cubic meters per year of purified gas. The upgrading and transformation of the coal chemical facilities at the site of the Coal Chemical Company will be carried out by Lanhua Science and Innovation Company’s Bagong Park facility. The upgrade and renovation involve the use of Saiding Company’s patented technology for pressurized continuous gasification of pulverized/coal briquette coal, to replace the conventional atmospheric-pressure fixed-bed batch gasification processes currently in use by the three companies located in the Bagong Industrial Park owned by Lanhua Chemical Industry. As a result, an annual production capacity of 490,000 tons of synthetic ammonia and 560,000 tons of large-grain urea will be achieved. The upgrade of industrial technologies does not increase the company’s existing capacity for producing ammonia (alcohols) and urea within its integrated facilities. The project uses the 15# \"high-high-high\" coal from local coal mines as raw material, and employs a coal crushing and pressurization + medium-pressure waste boiler gasification process. The gas is cooled through shift reaction, and then purified via low-temperature methanol washing and liquid nitrogen washing. The resulting syngas is sent to an ammonia synthesis unit, while the existing urea production facility is modified to produce urea. Project Overview: The project is located in Bagong Industrial Park, Jincheng Economic and Technological Development Zone, Jincheng City. Lanhua Coal Chemical Co., Ltd. serves as the main contractor for the construction; it integrates the production capacities of Lanhua Clean Energy Co., Ltd., the chemical division of Lanhua Science and Innovation Co., Ltd., and the Yanghua branch of Lanhua Science and Innovation Co., Ltd. The upgrade and renovation work will be carried out using the existing site of Lanhua Coal Chemical Co., Ltd. and part of the facilities owned by Lanhua Gas Co., Ltd. Five continuous gasification furnaces will be installed in place of the 37 batch gasification furnaces currently used by the three coal chemical enterprises. The existing urea production facility will be upgraded and expanded, while the existing urea-based compound fertilizer production facility will remain in use. Additionally, the wastewater treatment system across the entire plant will be upgraded to achieve zero discharge. After the project is implemented, the production capacity of ammonia (alcohol) and urea remains unchanged. The total investment for the project is 3,550,199,900 yuan, of which 237,180,000 yuan is allocated to environmental protection measures.
The main processes are described as follows: Gasification: A fixed-bed pressurized continuous gasification process is used. 5 new Sideng coal gasification furnaces with a diameter of φ3800mm and a pressure of 4.0 MPa will be installed (4 in operation and 1 as backup), with a normal gas production capacity of 231,887 m3/h (raw gas). Air separation: The normal oxygen production capacity of the air separation unit is 40,000 m3/h. Transformation: The transformation employs a process that combines adiabatic and isochoric conditions. It consists of a raw gas pretreatment unit, a reaction unit, a waste heat recovery and cooling unit, and a catalyst heating and sulfidation unit. Purification: Low-temperature methanol washing + liquid nitrogen washing. Sulfur recovery: Acidic gases are treated using the ECOSA wet acid production technology to produce 98% concentrated sulfuric acid. Ammonia synthesis: A new ammonia synthesis plant with an annual capacity of 490,000 tons will be built. The domestic ammonia synthesis process is adopted. Ammonia synthesis tower φ2800×28500. Urea: Shanxi Chinese Cabbage Coal Chemical Company currently has a 300,000 tons per year urea production facility using the CO2 stripping process; this traditional method requires 1,000 kg of steam per ton of urea produced. For the long-term development of the enterprise and to pursue a green, low-carbon, and environmentally friendly path, the existing CO2 stripping urea production facility has been upgraded to increase its capacity to 560,000 tons per year.
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