“Lucid waters and lush mountains are invaluable assets”. HSCC is always committed to developing as an eco-friendly enterprise and making way for green.
We pursue product sustainability, follow the “3R” (Reduction, Recycling and Reuse) principle in product development and production, and assume an environmental responsibility while creating values for our customers and the society.
While having its gross output of CPL exceed the designed output (40wt) in 2019, HSCC saw a decrease in various pollution indexes, achieving green development by expanding capacities without increasing emissions.
HSCC Nylon 6 regenerated fiber is divided into various specifications of regenerated filaments made by melting spinning from fiber waste generated during production or before consumption after degradation by the chemical/physical method. The regenerated fiber is produced under the Global Recycle Standard (GRS). Carbon footprints are reduced to protect biodiversity and promote ecological restoration of the earth.
Adhering to the idea of sustainable development, HSCC cooperates with the internationally renowned company UNIFI in applying regenerated nylon chips, ensuring product performance at the level of polymerization and providing top-quality renewable raw materials. It enjoys high international recognition.
CPL HPOplus® technology:
One of the most mature, stable, safe and eco-friendly CPL production technologies in the world, boasting a lower quantity of by-product ammonium sulfate as well as lower material and energy consumption.
Shenma cyclohexanone (CYC) and cyclohexanol hydration technology:
Lower unit consumption and pollution and higher effectiveness and security than the traditional oxidation technology. This technology is one creatively developed by China Pingmei Shenma Group based on the technique of 27,000 tons/year introduced from Asahi Japan in the 1990s.
EMS-INVENTA VK tubular reaction technology for polyamide (PA):
Introduced from Uhde-Inventa-Fischer Ag, the technology is one of the world’s high-quality PA production techniques. The application of this technology has effectively improved the scale effect of plant production, greatly reducing the cost of production and the emission of three wastes.
Single-pass nylon drafting and heat-setting technology:
The coarse nylon 6 monofilament and split master filament are processed at high speed by the one-step spinning-spinning method with the single-pass drafting and heat-setting technology, with the fiber energy consumption more than 20% lower than the two-step method.
Turning wastewater into landscape water
HSCC has a reclaimed-water recycling system, which helps to recycle 600 tons of water per hour for the Phase-I and Phase-II project, with the recycling rate of wastewater up to 40% or so.
In the chemical fiber industry, HSCC has invested more than 6.4 million yuan in the construction of an anaerobic wastewater treatment plant, which can treat more than 2,000 tons of wastewater per day as designed, with all wastewater from the factory able to be treated. After staged treatment, most recycled water flows back to the reuse pool and is used to water the green vegetation in the factory, reducing emissions and greatly protecting the surrounding water bodies and soil against pollution.
Turning waste residues into high-quality fertilizer
The mother liquid of ammonium sulfate generated during the production of CPL is processed into a high-quality fertilizer and exported to Southeast Asia for the restoration and improvement of alkaline land. All the sludge generated in the wastewater treatment process is recycled and treated by an environmental protection company with a professional qualification. Ammonium sulfate and coal are transported, used and packaged in a fully-enclosed space, ensuring that the surrounding environment is not polluted by dust.
Turning exhaust gases and waste fluids into thermal energy
The waste heat generated during CPL production is used in the Europe Fibrant Ammonium Sulfate Plant, with energy consumption reduced by more than 80%.
The exhaust gases and waste liquids from the HSCC factory are all piped to the incinerator for incineration, converted into heat, with carbon dioxide and water emitted. The remaining particulate matters are filtered in a bag dust collector.
More than 5.6 million yuan has been invested in the chemical fiber plant in upgrading the boiler exhaust treatment facilities. The bag dust collector and secondary desulfuration method are adopted. The wet electrical dust precipitator (WESP) is highly effective in removing combined pollutants, including PM2.5, NOx and SOx. Moreover, the emissions meet the Emission standard of air pollutants for coal-burning oil-burning gas-fired boiler [GB-T-13271-2014].
More than 7 million yuan has been invested in upgrading the comprehensive treatment of the volatile organic compounds (VOCs) workshops. By January 2020, more than 4.52 million yuan had been invested, completing the treatment and transformation of some VOCs workshops owned by HSCC and Liheng. According to the gas composition and concentration, the workshops were treated by a suitable method, such as “watering+electrostatic adhesion” or “UV photolysis+watering”, with the final removal efficiency exceeding 75%, removing the VOCs and malodorous gases to the greatest extent. Moreover, the VOCs were emitted at low concentration, exerting a significant protective effect on the ambient air quality.
Comprehensive utilization of industrial solid waste
Considering the hazardous waste generated during production (waste liquids from the testing laboratory, nylon polymer residue, spandex polymer waste liquid, and refined residue), the Group has brought in an assessment mechanism to strengthen production management and increase investment in technological upgrading. For example, more than 400 tons of hazardous waste can be reduced annually by recycling the primary waste liquids generated during spandex polymerization and component production, mounting more corollary equipment and improving the technology. The centralized non-noxious treatment of hazardous waste that cannot be recycled is delegated to an agency certified by the environmental protection department. A hazardous waste management account book has been established for the collection and transportation of hazardous waste in strict accordance with the rules to prevent secondary pollution. General solid wastes are strictly classified and stored for comprehensive recycling, while coal cinders are transported to a downstream enterprise for insulating hollow brick production; domestic refuse is stored by category according to the regulations or standards so that it can be transformed into public resources to improve the resource value and economic value of refuse.