The heavy oil fluidized pyrolysis and cracking project in Inner Mongolia by Zhongke has completed handover

The FTO synthesis technology represents an innovative breakthrough in the upgrading and diversification of by-products derived from coal-to-oil processes. When operating normally, this technology allows for the consumption of 1,200 tons of FTO wax and residue wax per year, thereby helping to conserve resources and make use of waste – which has positive implications for urban development and environmental protection.

Is it really too little for such a large device to process 1,200 tons per year?

Progress is smooth on the pilot project for the fluidized pyrolysis and cracking of FTO heavy oil by Zhongke Synthetic Oil Technology Co., Ltd. Publication date: 2018-07-02 Author: Ren Xu Source: **Office Number of views: [Font size: Large Medium Small] The pilot project for the fluidized pyrolysis and cracking of FTO heavy oil by Zhongke Synthetic Oil Technology Co., Ltd. has a total investment of 110 million yuan, of which 55 million yuan has already been invested. To date, 2,610 cubic meters of concrete work has been completed； Total earthwork completed: 13,516 m³ ； A total of 614 tons of steel structures have been completed ； A total of 14,660 inches of process pipeline welding has been completed ； A total of 1,206 meters of cable trays have been installed ； A total of 5,319 meters of cable laying has been completed.

Inner Mongolia accelerates the development of technologies for the deep processing of coal chemical products. On July 5, the WeChat official account of Inner Mongolia Chemical Industry reported that the pilot project for the fluidized pyrolysis and cracking of heavy oil using synthetic oil technology is being advanced at a rapid pace. The site of this project is located within the premises of the Inner Mongolia branch of Zhongke Synthetic Oil in the Dalu Industrial New Area, Jungeer Banner, Ordos City, Inner Mongolia. This project represents the first innovation in deep processing technologies for heavy oil in Inner Mongolia’s chemical industry. Experts told the Inner Mongolia Chemical Industry WeChat official account that the pilot project for FTO heavy oil fluidized pyrolysis and cracking developed by Zhongke Synthetic Oil Technology Co., Ltd. involves a total investment of 110 million yuan, of which approximately 55 million yuan has already been invested to date. In terms of project construction, a total of 2610 m3 of concrete has been poured so far ； Total earthwork completed: 13,516 m3 ； A total of 614 tons of steel structures have been completed ； A total of 14,660 inches of process pipeline welding has been completed ； A total of 1,206 meters of cable trays have been installed ； A total of 5,319 meters of cable laying has been completed. According to the information provided, the scale of this project is as follows: the fluidized cracking unit has a capacity of 200 kilograms per hour (for raw materials), while the fluidized pyrolysis unit has a capacity of 660 kilograms per hour (for raw materials). The construction scope includes a set of fluidized pyrolysis and cracking equipment (comprising both the fluidized pyrolysis and fluidized cracking functions), along with supporting facilities for storage, transportation, utilities, and environmental protection.

Waste gas treatment (1) Regenerated flue gas from the fluidized cracking process The regenerated flue gas from the fluidized cracking process includes coking flue gas and flue gas from the auxiliary combustion chamber. The flue gas generated in the auxiliary combustion chamber enters the regenerative charring tower to provide hot air for the reaction ； Particulates in flue gas are primarily generated by catalyst degradation. The high-temperature flue gas from the regenerator enters the flue gas scrubber, where the flue gas is subjected to two-stage water washing using demineralized water. The pollutant levels in the treated flue gas meet the limit requirements specified in Table 3 of the \"Emission Standards for Pollutants in the Petroleum Refining Industry\" (GB31570-2015), and the gas is finally discharged through an exhaust stack 38 meters high. (2) Coal crushing dust: Collection hoods are installed in the crushing and screening sections to capture this dust, which is then treated by bag filters; the dust emissions meet the standard limits specified in Table 4 of the \"Emission Standards for Pollutants in the Coal Industry\" (GB20426-2006). (3) Treatment of dust-containing exhaust gas from the coal powder silo: A coal powder silo is installed as a sealed pressure vessel; the coal powder generated through crushing is conveyed to this silo via pipelines. A bag filter is used for treatment, ensuring that the particulate emissions meet the standard limits specified in Table 4 of the \"Emission Standards for Pollutants in the Coal Industry\" (GB20426-2006). The treated exhaust gas is then discharged through an exhaust stack 15 meters high. (4) Treatment of regenerated flue gas in the fluidized pyrolysis process: After the regenerated flue gas enters the flue gas scrubber tower, alkali solutions and oxidants (sodium hydroxide solution and hydrogen peroxide) are injected into the sedimentation tank of the flue gas scrubber tower to absorb sulfides and nitrogen oxides present in the flue gas. The emissions of exhaust gas after treatment meet the limit requirements specified in Table 3 of the \"Emission Standards for Pollutants in the Petroleum Refining Industry\" (GB31570-2015), and the most polluted flue gases are discharged through an exhaust stack 38 meters high. (5) Unorganized waste gases: The storage tanks for this project are based on those from the “08 Project”; all the tanks used for storing oil in this area are of the fixed-roof type (arched roof), with their roofs sealed using nitrogen to reduce the evaporation of oil and gas. Given the short storage period of this pilot project, the breathing exhaust gases are routed through pipes to the flare system of Inner Mongolia Yitai Coal-to-Oil Co., Ltd. for combustion. During the processing of oil products, even small amounts of leaks can cause hydrocarbon substances to enter the atmosphere. When loading finished oil products, bottom-loading is used, and leak-proof quick connectors that allow for bottom-mounted connection are required; in this way, there is no contact between the oil and air, which helps to reduce loading losses. The unorganized boundary emission concentration of non-methane total hydrocarbons meets the requirements for atmospheric pollutant concentration limits at the enterprise boundary specified in Table 7 of the \"Emission Standards for Pollutants in the Petrochemical Industry\" (GB31571‑2015). Sealed unloading is used during the loading and unloading of oil products to reduce the leakage of oil and gas into the environment. Due to poor sealing or aging, valves, flanges, etc., may experience minor leaks of oil; by regularly checking the sealing performance of these components and replacing them as needed, uncontrolled oil leakage can be reduced.

Wastewater treatment: The oily wastewater generated in the fluidized cracking process mainly consists of condensate water from the stripping section, wastewater from the overhead gas separator, and washing wastewater from the reaction gas washing tower. The oily wastewater generated in the fluidized pyrolysis process mainly consists of wastewater from the overhead gas separator and wastewater from the reaction gas washing tower. Ground washing wastewater from various production units, wastewater generated during the project’s commissioning process, and wastewater from tank cleaning are produced intermittently. The aforementioned wastewater is uniformly discharged to the sewage treatment plant of the Pilot Project for Hierarchical Conversion of Carbonaceous Resources at Zhongke Synthetic Oil Inner Mongolia Co., Ltd. (Project 08) for treatment.

Solid waste treatment: The solid waste generated in this project mainly consists of waste catalysts resulting from the fluidized pyrolysis and cracking processes. These catalysts fall under category HW50 in the **List of Hazardous Wastes**. They are temporarily stored in the hazardous waste storage area of Project 08, where they are used to balance catalyst consumption during subsequent testing cycles. After the final testing cycle, the waste catalysts are entrusted to qualified entities for disposal； During coal preparation in the fluidized pyrolysis process (coal powder silos, bituminous coal crushing), the coal dust collected by the dust collectors is considered general solid waste and is reused in the production system ； The coke powder and coke-like materials generated during the fluidized pyrolysis process are mixed into coal and reused within the production system. After the completion of the experimental period, such coke powder and coke-like materials are assessed for their status as solid waste, and then disposed of in accordance with relevant regulations ； The waste engine oil generated by pumps falls under HW08 in the **List of Hazardous Wastes**, and must be disposed of by qualified entities. A hazardous waste temporary storage facility covering an area of 200 m2 has been established in the project area to temporarily store the hazardous wastes generated by the project, in a manner that takes into account their different types and categories. The construction of this storage facility complies with the relevant requirements specified in the \"Standards for Pollution Control of Hazardous Waste Storage\" (GB 18597-2001) and its amendments.