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Natural rubber additives, green is imperative
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Green is the development of the world chemical industry in the direction of the rubber additives, and other fine chemical industry's eternal theme. Although after many years of efforts, rubber chemicals industry in cleaner production has made great progress, but there are still a few products can produce carcinogenic N-nitrosamines, clean production technology of large tonnage products production is not yet universal, some device due to environmental pollution problems were forced to stop production, limited production still occasionally occur.
With the improvement of people's awareness of environmental protection, and the gas ten "," water ten, the new "environmental protection law" formally implemented, coupled with the EU REACH regulations to bring the huge pressure, "45" period, the green process of rubber chemicals industry must be accelerated.
In my opinion, the green rubber additives can from promoting products green, clean production process of development, the promotion of effective "three wastes" governance model and accelerate the consolidation within the industry from four aspects to promote.
1 continue to promote product green
At present, accelerator nobs, antioxidant d a large variety of toxic and harmful rubber additives has been achieved green alternative, but a variety of small thiuram, sodium dithiocarbamate, 5 chloro thiophenol has not been eliminated. Future emphasis should be placed on the accelerated to ultra accelerator product structure adjustment, accelerate TBzTD (four benzyl thiuram disulfide) industrialization process, instead of TMTD (disulfide tetramethyl thiuram) will produce nitrosamines thiuram type products. Among them, thiuram type ultra accelerator TMTD, factor TMTM (sulfide tetramethyl thiuram) and carbamates ZDC, will produce carcinogenic N-nitrosamines, the main alternative to product TBzTD and TiBTM (sulfide tetraisobutyl thiuram) has been gradually realize industrialization. Pentachlorothiophenol chemical plastic solution agent in Europe and the United States and other countries have stopped using. The main alternative is DBD (2,2 '- diphenyl benzoyl amino diphenyl disulfide). The production technology of these alternatives has been developed successfully in China, and it must be increased in the future.
2 key technology of developing clean technology
The development and implementation of cleaner production technology is an important measure to ensure the production process of rubber additives. In recent years, oxygen oxidation production ns of cleaner production technologies, million ton high thermal stability insoluble sulfur production technology, million ton pre cleaning dispersant rubber chemicals products, with solvent method instead of traditional acid method of production of accelerator M, cleaner production processes to achieve no waste emissions have been a breakthrough. But is the accelerator and as raw materials for many accelerator M wastewater problem has not been fully resolved, no wastewater discharge technology but also to be popularized in large area; in addition, sulfenamide accelerator and DM products oxidation process, NS oxygen oxidation process, DM hydrogen peroxide oxidation process of cleaner production process, although has been developed successfully, but also to be promoted.
3 to promote the "three wastes" governance model
The rubber additives, which are represented by the promoter, are high salt, high COD and high resin wastewater. At present, there are many methods of water treatment, such as multi - effect evaporation, evaporation of MVR, biochemical treatment, catalytic oxidation, adsorption, etc.. But the fact proves that many wastewater treatment methods are not effective in practical application. Salt containing wastewater is generally first evaporated in addition to salt, and then the water biochemical treatment; biochemical treatment can be used in catalytic oxidation and other methods, and then into the biochemical treatment. Deep treatment can be activated carbon adsorption or sand filter, etc. so that the effluent standard. At present, in the process of treatment, the most effective way is to "multi effect evaporation or MVR evaporation + biochemical treatment". However, the industry also has the processing device of the enterprise is still relatively small, it is required to accelerate the use of the industry.
4 accelerate the integration of the industry
Due to the prospect of rubber additives, the rapid expansion of domestic production capacity in recent years, the market competition will become more intense. Many smaller, single variety and no supporting raw materials for rubber chemical enterprises will gradually in the wave of green chemical submerged, scale, intensive management mode will become the future trend of rubber chemicals industry adjustment and layout.
This paper is from Shenzhen,, id=445?
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