Soda Ash Industry To Implement Cleaner Production Technology Program Issued - Soda Ash, Production -

Serial number Technical name Scope Technology main content The main problem to solve

Source of Technology Stage of Application Analysis 1 Ammonia Soda Pak Nai wet flue gas desulphurization technology for boilers Ammonia and ammonia alkali alkali enterprises and enterprises from other enterprises closer to coal-fired boiler flue gas desulfurization Pak Nai slurry made of a flue gas desulfurization agent, desulfurization efficiency is 95%; Pak Nai desulfurization product gypsum as cement after the preparation of materials, to GB/T21371-2008 national standard (for the cement industry by-product gypsum). Or the use of sea water on the solubility of calcium sulfate, after the Pak Nai desulfurization products discharged into the sea. On sodium carbonate process in the production of large amount of waste generated in the process utilization Pak Nai, while coal-fired boiler flue gas generated in the SO 2 Desulphurization processing, and Pak Nai - SO 2 Two-way control. Independent R & D Promotion stage 1. As a desulfurization agent with Pak Nai, and other flue gas desulfurization method can save a lot compared to calcium oxide, magnesium oxide, soda ash and other resources. 2. This technical desulfurization efficiency stabilized at 90%, can be widely used in boiler flue gas containing sulfur dioxide and other gas desulfurization project. 3. To a 220t / h boiler, annual running 7,000 hours, for example, may be about 6,000 tons of utilization Pak Nai, about 3,000 tons of sulfur dioxide emissions. 4. Comprehensive utilization of desulfurization products with good market potential, with good social and Economy Benefits. 600 thousand tons can produce 30-35 million tons of soda ash production wet Alkali (50% water), all for the desulfurization of sulfur dioxide emission reduction of about 64,000 tons can be. Creating economic value 60 million yuan / year. 5. Ammonia have been 2-3 at home base for the business enterprises Pak Nai Flue Gas Desulfurization. 2 Hou's not cold carbonization United Alkali Alkali Project of Carbon Chemical industry Sequence Through the carbonization process is not patented cold, canceled the production process of traditional carbonation tower cooling water tank must be used to achieve not cold carbonation. Increase the carbonation out of the grain size, lower grain slurry separation more difficult, reduce the heavy alkali water, save burning steam consumption. Extension of carbonation tower operating cycle, a significant reduction in the number of wash tower, a significant reduction in effluent emissions. Independent R & D Promotion stage 1. Cooling tower is not a simple process, and operations of the abnormal operation of a simple liquid adjustment for the true providing the conditions for self-control. 2. Less investment, low running cost, energy saving effect is obvious. Joint base for the 30 tons of businesses, and external cooling carbonization process compared to Hou, the investment can be reduced 18 million, saving 6,860 tons of standard coal each year. 3. Tower without any form Coolers Eradication of the worst parts of scarring, cooling the surface. Small and simple tower components, a large distance between each other, allowing a large margin scarring, scarring rate in a certain operating period under the tower can be extended. Tower likely to cause crystal deposition in the dead less, also help to extend the operating cycle can be truly zero emissions. 4. Currently only one application. 3 Recovery boiler flue gas CO 2 Production of soda ash technology Soda ash production and other by CO 2 Gas as raw material for production of enterprises Does not change the soda production process, using pressure swing adsorption, recovery boiler flue gas CO 2 For the production of soda ash. Natural gas as raw material Soda lime kiln cancel; ammonia soda plant to reduce the amount of limestone. Save Energy And resources, to reduce CO 2 Emissions. Joint R & D Promotion stage 1. On soda ash and other by CO 2 Gas as raw material for production of business role model, can achieve energy reduction. 2. With annual output of 150,000 tons of synthetic ammonia, 350,000 tons soda ash, 30,000 tons total ammonium bicarbonate, calcined soda ash, produced annually by 100% CO boiler 2 Gas about 12 million tons, with the technology, the company to reduce annual CO 2 Gas emissions of about 53,000 tons. 3,3. Reduce the consumption of about 79,000 tons of limestone / year. 4. Reduce the consumption of about 11,500 tons anthracite / year. Five. Comprehensive cost of about 0.65 yuan per square CO 2 , And lime kiln quite. 6. Only one enterprise applications. 4 Dry distillation Manufacturing process of sodium carbonate in distilled ammonia recovery process In the manufacturing process of sodium carbonate of ammonia distillation recovery process operation, direct integration with lime powder to break down ammonia, and the rest with positive pressure distillation. Preparation of lime not only recovered when the lime and water reaction heat for distillation, while reducing waste equivalent distillation. Independent R & D Promotion stage 1. Saving resources and energy: steam consumption savings of about 0.4t / t base; 2. Recyclable about 70 000 kJ / t base of the reaction heat, reduce by about 130 000 kJ / t alkali waste heat loss. 3. Grey water savings of about 2m 3 / T base. 4. Reduce pollution emissions: a distillation of this technology to reduce waste produced when about 2m 3 / T base, the base than other companies to reduce ammonia emissions of wastewater 2m 3 / T base. Five. Ammonia Alkali only one enterprise application. 5 Cold outside air alkali cleaning process transformation Hou Enterprise 1. Angle Valve External Air-cooled carbon transform the production process of continuous operation in about a month after the carbonation tower towers need to be stopped for boiling, and then resume production. 2. Carbonization process without angle valve outside the cold outside cooled by several units composed of a group of carbonation tower; each tower a few days after operation, and part II with ammonia liquor after carbon exhaust gas pressure, by washing tower rotation; cleaning tower ammonia emissions Tower II into the soda alkali liquor. This does not produce cook washing tower; the same time avoiding the stop tower lost production caused by boiling wash. 3. The technology has made patent, patent number: ZL200710050017.8. Radical Hou wastewater, wastewater truly zero emissions. Joint R & D Promotion stage 20 tons / year medium-Soda, for example, compared with the process used for Angle, Angle Valve technology without the cost-effectiveness analysis is as follows: 1. Wash water to reduce cooking Tower 4900m 3 / Year, to save water consumption and sewage treatment charges 56,350 yuan / year; 2. Reduce the cooking tower lost production 7200t / year, equivalent to the amount of 11.16 million yuan / year; 3. Operating power consumption to increase 5kWh / t, equivalent to electricity 500,000 yuan / year; more than three additional, less offset, the operating cost savings of 10,716,350 yuan / year. 4. Equipment cost savings of 160,000 yuan; 5. Only one enterprise application Hou.

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