Recently, the Shanxi Provincial Department of Environment plans to approve the energy-saving and environmental protection upgrade and renovation project of Shanxi Lanhua Coal Chemical Co., Ltd.

It is reported that the project is located in Bagong Industrial Park, Jincheng Economic and Technological Development Zone, Jincheng City. It is mainly constructed by Lanhua Coal Chemical Company, integrating the production capacity of Lanhua Clean Energy Company, Lanhua Science and Technology Innovation Company Chemical Branch, and Lanhua Science and Technology Innovation Company Yanghua Branch. The original site of Lanhua Coal Chemical Company and some sites of Lanhua Gas Co., Ltd. will be used for upgrading and transformation projects. Five continuous gasifiers will be used to replace the 37 intermittent gasifiers of the existing three coal chemical enterprises. The existing urea plant will be expanded and the existing urea based compound fertilizer plant will be retained, which will facilitate the implementation of zero emission technology transformation for the entire plant's wastewater treatment system. After the implementation of the project, the production scale of ammonia (alcohol) and urea remains unchanged. The total investment of the project is 355019.99 million yuan, including 237.18 million yuan for environmental protection investment.

The details are as follows:

Shanxi Lanhua Coal Chemical Co., Ltd. Energy saving and Environmental Protection Upgrade and Renovation Project

Project Name: Energy Conservation and Environmental Protection Upgrade and Renovation Project of Shanxi Lanhua Coal Chemical Co., Ltd

Construction location: Bagong Industrial Park, Jincheng Economic and Technological Development Zone, Jincheng City

Construction unit: Shanxi Lanhua Coal Chemical Co., Ltd

Environmental Impact Assessment Agency: Saiding Engineering Co., Ltd

Proposed approval date: November 4, 2024

Project Overview: The project is located in Bagong Industrial Park, Jincheng Economic and Technological Development Zone, Jincheng City. It is mainly constructed by Lanhua Coal Chemical Company, integrating the production capacity of Lanhua Clean Energy Company, Lanhua Science and Technology Innovation Company Chemical Branch, and Lanhua Science and Technology Innovation Company Yanghua Branch. The original site of Lanhua Coal Chemical Company and part of the site of Lanhua Gas Co., Ltd. will be used for upgrading and transformation projects. Five continuous gasifiers will be used to replace the 37 intermittent gasifiers of the existing three coal chemical enterprises. The existing urea plant will be expanded and the existing urea based compound fertilizer plant will be retained, which will facilitate the implementation of zero emission technology transformation for the entire plant's wastewater treatment system. After the implementation of the project, the production scale of ammonia (alcohol) and urea remains unchanged. The total investment of the project is 355019.99 million yuan, including 237.18 million yuan for environmental protection investment.

Main environmental impacts and measures to prevent or mitigate adverse environmental impacts:

（1） Strictly implement measures for preventing and controlling air pollution. The raw coal unloading shed is fully enclosed and equipped with a dry mist dust suppression system; The raw coal transportation and transfer adopt enclosed corridors, and the dust production links such as raw coal silos, screening dust, fine coal buffer bin dust, urea conveying packaging waste gas, boiler slag bin dust, boiler ash bin dust, ammonium sulfate buffer bin waste gas, ammonium sulfate packaging dust, and product salt drying dust are all equipped with bag filters for treatment. The liquid ammonia flash gas is reused as raw material in the ammonia synthesis unit, and the ammonia synthesis purge gas is returned to the transformation process for ammonia washing tower treatment. The medium pressure flash gas is sent to the ammonia stripping and deacidification process for treatment. The transformation condensate flash gas, vacuum flash separation gas, deacidification tower acid gas, hot regeneration tower top acid gas, and azeotropic tower top non condensable gas are sent to the sulfur recovery process, using "acid mist capture+hydrogen peroxide washing" treatment; Ammonium sulfate drying waste gas is treated with "cyclone dust removal+bag filter"; The regenerated gas from the liquid nitrogen washing adsorbent and the non condensable gas from the methane distillation tower are sent to the low-temperature methanol washing process for comprehensive utilization. The exhaust gas from the tail gas washing tower is sent to the RTO regenerative oxidizer for combustion treatment, and the flue gas from the regenerative oxidizer combustion adopts low nitrogen combustion technology. Heating and sulfurization release gas is recycled, and after sulfurization is completed, the exhaust gas is sent to a torch for combustion treatment.

The released gas from the coal lock is washed with water and stored in the gas tank, and then pressurized and sent back to the coal lock for pressurization; Ammonia water absorption non condensable gas and liquid ammonia storage tank gas delivery coal lock gas reuse system; The coal lock extracts air through cyclone dust removal and sends it to the boiler air supply system; The breathing gas from organic liquid storage tanks and the exhaust gas from organic liquid loading and unloading trucks are sent to coal-fired boilers. The flue gas from coal-fired boilers is treated with "SNCR+SCR denitration+bag filter+ammonia desulfurization+wet electrostatic precipitator". The exhaust gas from the urea absorption tower is treated with three-stage water washing. The waste gas from urine pre concentration and urine evaporation is reused as raw materials in the urea synthesis system. The waste gas from the urea granulation device is treated with water spray cycle washing; The waste gas from the sewage treatment plant is treated with "alkaline washing+biological filter".

（2） Strictly implement water pollution prevention and control measures. Carry out zero discharge technology transformation on the existing factory sewage treatment station, setting up five systems including sewage treatment system, biochemical sewage reuse system, saline wastewater reuse treatment system, concentrated salt water treatment system, and evaporation crystallization system. During the operation period, coal wastewater, gasification slag flushing water, gasification flash evaporation water, low-temperature methanol washing wastewater, circulating water system wastewater, desalinated water station wastewater, boiler wastewater, floor flushing water, and domestic wastewater are treated by the sewage treatment system and reused without being discharged.

（3） Strictly implement measures to prevent and control solid waste pollution. According to the principles of "reduction, resource utilization, and harmlessness", solid waste should be classified, collected, treated, and disposed of to prevent secondary environmental problems. Gasification ash, boiler ash, dust removal ash, and filter cake from the pressure filter are sent to the cement plant for comprehensive utilization. When the utilization of gasification slag is not smooth, they are sent to the existing backup slag yard of Lanhua Coal Chemical Company for landfill. Waste air separation adsorption materials, refrigeration waste desiccants, waste ammonia synthesis catalysts, CO2 gas dehydrogenation waste catalysts, waste filter bags, and waste membrane materials are recycled by the manufacturer. Waste purification tower packing, converter waste catalyst, waste molecular sieve, waste acid making catalyst, waste CO2 gas desulfurizer, denitrification waste catalyst, waste lubricating oil, biochemical sludge, miscellaneous salt and other hazardous waste storage facilities shall be temporarily stored in accordance with regulations, with a storage period not exceeding 30 days, and shall be regularly transferred and disposed of by qualified units.

（4） Strictly implement measures to prevent and control noise pollution. When setting up the factory area, factors such as terrain, factory buildings, sound source direction, and workshop noise should be considered for a reasonable layout. High noise source workshops or devices should be kept away from office buildings, and individual protection should be strengthened for noise operation personnel. Select low-noise equipment, adopt measures such as vibration reduction foundation, factory sound absorption, muffler, and elastic connection noise reduction for mechanical and aerodynamic noise such as compressors, fans, and various pumps, and strictly control the impact of noise generated during the production process on the surrounding environment.

（5） Strictly implement measures to prevent and control groundwater pollution. The project is located within the Sanguquan area and must adopt zoning anti-seepage measures in accordance with the relevant requirements of the "Reply on the Impact Assessment of Energy Conservation and Environmental Protection Upgrade and Transformation Project of Shanxi Lanhua Coal Chemical Co., Ltd. on Water Resources in Sanguquan Area" (Jin Shi Shen Guan Ban [2024] No. 129) and the "Technical Specification for Waterproofing of Petrochemical Engineering" (GB/T 50934-2013) issued by the Jincheng Administrative Approval Service Management Bureau. The anti-seepage measures of the project must be rectified in accordance with the above anti-seepage requirements, and can only be officially put into operation after the rectification measures are in place. Set up five groundwater monitoring wells, conduct regular monitoring, and immediately activate emergency plans and response plans once abnormalities are found to avoid adverse effects on the groundwater environment.