Key enterprises must save 1% of energy use a year, and Shanghai’s old industrial zones accelerate green and low-carbon development
Shanghai’s old industrial parks are accelerating the process of green and low-carbonization.
According to the "Shanghai Chemical Industry Zone Green and Low-Carbon Development Action Plan", by 2025, Shanghai Chemical Industry Zone will attract 20 billion yuan of investment in green and low-carbon industries, and the scale of green and low-carbon related industries will reach 50 billion yuan. While green and low-carbon industries continue to grow, the level of energy conservation and carbon reduction capabilities must also keep up. The Shanghai Chemical Industry Zone has made it clear that key energy-using enterprises strive to save an average of 1% of energy use every year. "At the end of the year, it dropped 14%.
Chemical companies are both large energy consumers and large carbon emitters. They are one of the six high-energy-consuming industries. They face the challenge of low-carbon development. How can they explore a path to green transformation while ensuring the economic benefits of the company?
"Emissions of air pollutants including nitrogen oxides, sulfur oxides, particulate matter, volatile organic compounds, etc. will be reduced by 30% in 2023 compared with 2018." On May 24, CEO of Shanghai Secco Petrochemical Co., Ltd. Official Zhang Minglong pointed to the data on the screen and said that this was due to the company's unremitting investment in environmental protection. Since 2011, Shanghai SECCO has invested an average of nearly 200 million yuan in environmental protection every year.
Quality is evident in every detail, even a small valve. Shanghai SECCO invested 11 million yuan in 2019 to replace all 67 storage tank breathing valves, which greatly reduced the unorganized emissions of volatile organic compounds.
Witness the determination of enterprise transformation and upgrading at critical moments. In August 2019, the price of acrylonitrile products was at a high level. At this time, a waste gas incinerator in the acrylonitrile unit failed. This meant that although full-load operation could bring considerable economic benefits, it would inevitably lead to a large amount of waste gas being released. Row. Shanghai Secco made a decisive decision to reduce the production capacity of the device to 50% of the normal capacity. Afterwards, statistics showed that due to the initiative to reduce the load, Shanghai Secco’s after-tax profit decreased by 4 million yuan in total. However, the company is united and firmly believes that green and low-carbon development is the key First priority.
"There is no real solid waste, only misplaced resources." Li Rong, environmental protection manager of Shanghai SECCO, said that if solid waste can be used as raw materials for other manufacturers to achieve a circular economy upstream and downstream of the industrial chain, it will help reduce pollution and reduce carbon emissions. . In the Shanghai Chemical Industry Park, the industrial correlation between enterprises exceeds 80%, and a low-carbon production model of resource sharing and raw material product interoperability has been initially realized.
Shanghai Secco's sewage reuse treatment plant with a design capacity of 150 cubic meters per hour is a typical case of circular economy. This device receives the sewage produced by the acrylonitrile plant and low-concentration sewage from the factory area, and reuses it after treatment, ensuring that Shanghai Secco's growth in the new year The acrylonitrile plant with a production capacity of 260,000 tons does not increase pollution emissions, breaking the dilemma of no successful acrylonitrile wastewater treatment technology in the industry.
To take the initiative to take on more environmental responsibilities, we cannot rely solely on companies to “promote style”. In Shanghai, more and more environmental pioneers have been fully recognized by society and encouraged by real money because of their courage to innovate and pay, forming a closed loop of value recognition for green and low-carbon development.
Shanghai SECCO's sludge drying equipment was completed and put into operation in April 2020. It can reduce the emission of 1,000 tons of wastewater sludge a year, saving the company tens of millions of yuan in hazardous waste disposal costs, and achieving environmental benefits, economic benefits and "Killing three birds with one stone" for social benefits.
Shanghai Chemical Industry Park Sino-French Water Development Co., Ltd., also located in Shanghai Chemical Industry Park, operates a domestic water installation, an industrial water plant and a desalted water plant, providing water supply and sewage treatment services to the entire park. In order to save water resources and develop a circular economy, most of the raw water used to produce desalinated water comes from equipment cooling water drainage in the sewage plant process, accounting for more than 70% of the total raw water.
Sino-French Water handles the park's wastewater in a centralized manner, taking into consideration economic, environmental, low-carbon and other aspects. It is estimated that if the "integrated" wastewater treatment model is not adopted and is handled by the park enterprises themselves, more than 70% of the enterprises in the park must build their own large-scale biochemical treatment facilities or pre-treatment facilities. The investment cost of the company's self-built sewage pretreatment facilities is about 500 million to 800 million yuan, and the new area is about 30,000 square meters to 50,000 square meters. Enterprises have to bear the operating costs of pretreatment facilities, and in the decentralized treatment mode of enterprise wastewater, electricity and chemical consumption will also increase. When enterprise wastewater is decentralized, the electricity consumption is about 1.5 to 2 times that of centralized treatment, the chemical consumption is about 30 times more than that of centralized treatment, and the carbon source consumption is more than 40 times that of centralized treatment.
Pollution reduction and carbon reduction are a delicate matter, and more and more companies are beginning to use digital and intelligent means to promote the construction of carbon management platforms. Wang Yuan, general manager of Sino-French Water Affairs, said that Sino-French Water Affairs is building a complete artificial intelligence algorithm model to predict the future water supply and drainage volume of each enterprise on the basis of millions of pieces of data, as a basis for refined production operations and scheduling. The current accuracy rate is about 90% and will increase further.
Shanghai SECCO is continuing to develop a carbon footprint management platform to collect carbon data throughout the entire life cycle of products to provide data support for future products to be more low-carbon or even zero-carbon. "The domestic market is relatively lacking in this aspect. If we can meet customer needs and provide product carbon footprint information, we can gain an advantage in production and operation, which will directly bring impetus to green and low-carbon development." Li Rong said.
