The new coal chemical project in Gansu has won the bid!

Thread Content

The new coal chemical project in Gansu has won the bid! Recently, the tender for the conceptual design of the project aimed at producing hydrogen through the efficient utilization of low-grade coal, as well as manufacturing 500,000 tons per year of high-concentration urea-based compound fertilizers, carried out by Gansu Nenghua Jinchang Energy Chemical Development Co., Ltd., was concluded. Aerospace Changzheng Chemical Engineering Co., Ltd. won the bid with a cost of 5.98 million yuan. For the basic engineering design, the main items of the tender are as follows: 1. Licensing of proprietary technologies for coal-based ammonia synthesis plants and preparation of process packages. This includes licensing the use of advanced domestic HT-L pulverized coal pressurized gasification technology with independent intellectual property rights, as well as proprietary technologies for the corresponding conversion processes, low-temperature methanol washing, liquid nitrogen washing, ammonia synthesis, and sulfur recovery processes, along with the preparation of process packages. 2. Foundation engineering design for all production units, utility systems, auxiliary systems, and service facilities of the project. 3. The design shall be carried out in accordance with the \"Specifications for Design Content of Foundation Engineering for Petrochemical Plants\" SPMP-STD-EM2003-2016. In reference to the relevant requirements of the \"Standard for Digital Delivery of Petrochemical Projects\" GB/T 51296-2018, digital delivery standards are established, with full consideration given in the preliminary estimates to the costs associated with the digital delivery of detailed engineering designs. The depth of the basic engineering design documents should be sufficient to meet the requirements for design review by the project owner, bidding for EPC general contracting or unit EPC subcontracting projects, procurement of construction materials, preparation for construction, and the development of detailed engineering designs ； It also provides a \"Fire Protection Design Section,\" a \"Environmental Protection Section,\" a \"Safety Facilities Design Section,\" a \"Occupational Health Section,\" an \"Energy Conservation Section,\" a \"Seismic Resistance Design Section,\" as well as various regulatory documents, to meet the review requirements of **regulatory authorities. The designed production scale for this project is: 200 million Nm3 of hydrogen per year ； 300,000 tons per year of synthetic ammonia (of which 174,000 tons are used to produce urea) ； Urea: 300,000 tons per year (intermediate product) ； Urea-based compound fertilizer: 500,000 tons per year ； Sulfur: 22,400 tons per year. The main production units include coal transportation for raw and fuel materials, gasification, air separation, shift reaction, desulfurization and decarburization, ammonia refrigeration machines, carbon dioxide compression, liquid nitrogen washing, syngas compression, synthesis, urea production, and urea-based compound fertilizers ； Utility facilities include substations, circulating water plants, water treatment systems, sewage treatment stations, accident buffer tanks, central control rooms, heating systems, deaeration stations, heating equipment (including heat exchange stations), fire pump stations, fire water tanks, etc ； Auxiliary engineering facilities include analysis and testing as well as gas protection stations, maintenance workshops, warehouses, general warehouses, hazardous waste temporary storage areas, comprehensive office buildings, production office buildings, storage and transportation systems, tank farms, loading platforms, filter press buildings, foam stations, intermediate slag storage areas, etc. The project is located in the Hexibao Chemical Circular Economy Industrial Park in Jinchang City, with a total investment of 2.47 billion yuan. The project uses local high-sulfur coal (high-sulfur coal from Mine No. 1 of Shagang Coal Mine) as raw material. It employs the aerospace pulverized coal pressurized gasification technology to produce crude syngas. Carbon monoxide in the syngas is then converted into hydrogen via shift conversion. Sulfides and carbon dioxide are removed from the gas through low-temperature methanol washing. The acidic gas exiting the methanol washer is sent to a sulfur recovery unit to produce sulfur, while the purified gas from the methanol washer is used in a PSA process to produce hydrogen gas. To balance the hydrogen, part of the purified gas is refined through liquid nitrogen washing and nitrogen enrichment; liquid ammonia is produced via compression and low-pressure ammonia synthesis, and urea is further manufactured, ultimately yielding urea-based compound fertilizers.