The lack of water resources in Shaanxi is well-known throughout the country. The long slopes of loess with long winds and sands lack rain and water and are not evenly distributed. The precious and precious water resources seriously restrict the development of energy and chemical companies in the Guanzhong and Northern Shaanxi regions where coal, gas, oil, and salt are enriched. They also force petrochemical companies to do a good job in water conservation. It is gratifying that the reporter recently discovered in an investigation and interview in this area that the petrochemical enterprises in Shaanxi Province have already taken action and adopted various water saving measures to maximize the use of precious water resources. Some of the former “big water consumers†Become a "water-saving champion."
One of the largest gas methanol enterprises in the country, Yulin Natural Gas Chemicals Co., Ltd. is currently stepping up construction of the first phase of the 2# sewage treatment expansion project. After the end of the month, the company's new sewage treatment capacity will reach 100 tons/hour. In addition to the existing 1#50 ton/h sewage treatment plant, the wastewater treatment capacity will reach 150 tons/hour, so that the 130 tons/hour high suspended solids wastewater generated in the production process can be completely treated and reused, and the ton of methanol water consumption will be From the current 6.86 tons to 4.11 tons. Subsequently, the company will start the second phase of the 2# sewage treatment expansion project. After the completion of the second phase, the sewage treatment capacity will be increased to 250 tons/hour, including all the production wastewater, domestic sewage, process condensate and steam condensate. Effluent water is recycled and used to achieve a “zero†discharge of waste water. At the same time, the water consumption per ton of methanol is drastically reduced to 1.89 tons, reaching the world's leading level.
In response to defects in the original steam and condensate systems for summer emptying of low pressure steam and high quality and low concentration of condensate, Shaanxi Yanchang Petroleum Group Yulin Refinery Co., Ltd. spent 6.68 million yuan, and Beijing Tuofeng Armstrong Steam Pipe Network Energy Conservation Technology Co., Ltd. Cooperate to implement the condensate recovery and recycling project, recover the condensate from the production units of the first and second workshops, reforming hydrogenation, power, storage and transport, oil products, and sewage workshops, and send them to the condensate tank. After membrane filtration, activated carbon filtration and other highly efficient decontamination and purification, the water quality meets the desalinated water quality requirements, and the input boiler is used again to recover condensate water of 260,000 tons/year. The 300 ton/h sewage treatment plant, which was built by the plant in 2008 with a cost of 100 million yuan, not only meets the wastewater treatment requirements of the existing 3 million-ton/year refinery, but also 1.8 million tons/year of catalysis for the ongoing construction of the plant. 300,000 tons/year reforming, 400,000 tons/year hydrogenation, 100,000 tons/year benzene extraction, and other energy expansion retrofitting devices, built a sewage treatment system in advance, and treated waste water and brine 35 tons/hour to save fresh Water 280,000 tons/year.
Located on the edge of the Maowusu Desert, Shaanxi Beiyuan Chemical Co., Ltd. cherishes water resources. The 1 million-ton/year PVC plant they are building uses the world’s most advanced air-cooling technology and dry-acetylene technology to increase the cost of investment by 20% and replace the benefits of saving 12 million tons of water per year. “In designing this project, we designed a cascade water use plan for the severe water shortage in northern Shaanxi, and turned treated wastewater into cement production, sprayed pulverized coal, and pavement water, so as not to waste a single drop of water. “Beiyuan Chairman Li Houzhi told reporters.
Yan'an Petrochemical Plant, known as a pearl in the Loess Plateau, not only recycles all its own process condensate and steam condensate, but also builds several cellars to collect and store rainwater. When the reporter went to the factory in an interview recently, it was a continuous rainy day. Wang Xiaobin, deputy director of the plant, pointed to the water cellar where half of the water had been stored. He said: “The rainwater is sent to the factory’s advanced water treatment system and can become clean. Desalinated water.†Since July, Yan’an Petrochemical Plant has collected and used 500,000 tons of rainwater, saving 1.65 million yuan of funds.
Shaanxi Xinghua Group has already established 9 sets of circulating water devices, and the circulating water supply capacity has been significantly increased to 30,000 tons/year, and the water cycle utilization rate has exceeded 97%. In 2009, the group spent 60 million yuan, advanced biological treatment and MBR technology, upgraded the original wastewater treatment facilities, and implemented reverse osmosis technological transformation of the boiler water system. At the same time, a 60 t/h electrodialysis ammonia-nitrogen treatment unit was newly built to treat and recover the surface condensate from ammonium nitrate and nitric acid plants, and reused wastewater was treated at more than 1,000 tons per day. "The 300,000 tons/year of synthetic ammonia, 300,000 tons/year of methanol, and 300,000 tons/year of soda ash that are under construction will all be reused in Zhongshui after the urban sewage treatment in Xingping City to realize the zero demand for fresh water from the nation's first chemical company. Every year, more than 14 million tons of municipal sewage can be digested, making the former water-using large household water-saving champion.†Wang Zhihai, chairman of Xinghua Group, told reporters.
One of the largest gas methanol enterprises in the country, Yulin Natural Gas Chemicals Co., Ltd. is currently stepping up construction of the first phase of the 2# sewage treatment expansion project. After the end of the month, the company's new sewage treatment capacity will reach 100 tons/hour. In addition to the existing 1#50 ton/h sewage treatment plant, the wastewater treatment capacity will reach 150 tons/hour, so that the 130 tons/hour high suspended solids wastewater generated in the production process can be completely treated and reused, and the ton of methanol water consumption will be From the current 6.86 tons to 4.11 tons. Subsequently, the company will start the second phase of the 2# sewage treatment expansion project. After the completion of the second phase, the sewage treatment capacity will be increased to 250 tons/hour, including all the production wastewater, domestic sewage, process condensate and steam condensate. Effluent water is recycled and used to achieve a “zero†discharge of waste water. At the same time, the water consumption per ton of methanol is drastically reduced to 1.89 tons, reaching the world's leading level.
In response to defects in the original steam and condensate systems for summer emptying of low pressure steam and high quality and low concentration of condensate, Shaanxi Yanchang Petroleum Group Yulin Refinery Co., Ltd. spent 6.68 million yuan, and Beijing Tuofeng Armstrong Steam Pipe Network Energy Conservation Technology Co., Ltd. Cooperate to implement the condensate recovery and recycling project, recover the condensate from the production units of the first and second workshops, reforming hydrogenation, power, storage and transport, oil products, and sewage workshops, and send them to the condensate tank. After membrane filtration, activated carbon filtration and other highly efficient decontamination and purification, the water quality meets the desalinated water quality requirements, and the input boiler is used again to recover condensate water of 260,000 tons/year. The 300 ton/h sewage treatment plant, which was built by the plant in 2008 with a cost of 100 million yuan, not only meets the wastewater treatment requirements of the existing 3 million-ton/year refinery, but also 1.8 million tons/year of catalysis for the ongoing construction of the plant. 300,000 tons/year reforming, 400,000 tons/year hydrogenation, 100,000 tons/year benzene extraction, and other energy expansion retrofitting devices, built a sewage treatment system in advance, and treated waste water and brine 35 tons/hour to save fresh Water 280,000 tons/year.
Located on the edge of the Maowusu Desert, Shaanxi Beiyuan Chemical Co., Ltd. cherishes water resources. The 1 million-ton/year PVC plant they are building uses the world’s most advanced air-cooling technology and dry-acetylene technology to increase the cost of investment by 20% and replace the benefits of saving 12 million tons of water per year. “In designing this project, we designed a cascade water use plan for the severe water shortage in northern Shaanxi, and turned treated wastewater into cement production, sprayed pulverized coal, and pavement water, so as not to waste a single drop of water. “Beiyuan Chairman Li Houzhi told reporters.
Yan'an Petrochemical Plant, known as a pearl in the Loess Plateau, not only recycles all its own process condensate and steam condensate, but also builds several cellars to collect and store rainwater. When the reporter went to the factory in an interview recently, it was a continuous rainy day. Wang Xiaobin, deputy director of the plant, pointed to the water cellar where half of the water had been stored. He said: “The rainwater is sent to the factory’s advanced water treatment system and can become clean. Desalinated water.†Since July, Yan’an Petrochemical Plant has collected and used 500,000 tons of rainwater, saving 1.65 million yuan of funds.
Shaanxi Xinghua Group has already established 9 sets of circulating water devices, and the circulating water supply capacity has been significantly increased to 30,000 tons/year, and the water cycle utilization rate has exceeded 97%. In 2009, the group spent 60 million yuan, advanced biological treatment and MBR technology, upgraded the original wastewater treatment facilities, and implemented reverse osmosis technological transformation of the boiler water system. At the same time, a 60 t/h electrodialysis ammonia-nitrogen treatment unit was newly built to treat and recover the surface condensate from ammonium nitrate and nitric acid plants, and reused wastewater was treated at more than 1,000 tons per day. "The 300,000 tons/year of synthetic ammonia, 300,000 tons/year of methanol, and 300,000 tons/year of soda ash that are under construction will all be reused in Zhongshui after the urban sewage treatment in Xingping City to realize the zero demand for fresh water from the nation's first chemical company. Every year, more than 14 million tons of municipal sewage can be digested, making the former water-using large household water-saving champion.†Wang Zhihai, chairman of Xinghua Group, told reporters.
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