product news/產品新聞
Environmentally Friendly and Highly Efficient Binder Systems for Self-Curing Componenta, Hoensbroek, Netherlands, reduced the
高效环保型的自硫化的粘结剂系统
noxious emissions and lowered the odor level in its foundry and vicinity through binder selection. Componenta foundry has a production capacity of 23,000 metric tons per year and employs approximately 150 workers in two- and three-shift operations. Te foundry has a hot blast cupola furnace with a capacity of 18 metric tons per hour and also two holding furnaces with a capacity of 10 metric tons. Te furan line is semiautomatic, with a sand mixer with
a capacity of 80 metric tons per hour. Nine complete casting molds can be produced in one hour. Te maximum size of the mold boxes is 3000x1750x800 mm. Te foundry was confronted for the first time with an
increase of problems due to odor emissions after a merger of its plants and the associated increase of casting produc- tion. Te significant increase in casting production inevitably led to an increase in emissions and in the level of unpleas- ant odors in the vicinity. Odor measurements at the time revealed the emission level was within the limits of the permit. As odor is not stable in time, it was decided the odor level has to be analyzed within 6 hours and due to the specific surroundings, hedonic value should change from -1 to -2. Because of these new requirements, the odor level had to reduce with a factor of 4 to fulfill the requirements of a modified environmental permit. In 2012, Componenta decided to test a new furan resin
system with reduced sulfur content and aromatic com- pounds. Te aim of testing ASKURAN RS with an RS hardener was to reduce the emissions of sulfur and nitrogen oxides and formaldehyde at the molding line and to mini- mize the odor. Te working conditions were improved significantly by
lowering the concentration of formaldehyde from 0.18 mg/ m³ (the working limit value is 0.15 mg/m³) to approximately 0.07 – 0.08 mg/cm³. Te sulfur dioxide emission (Fig. 1) was reduced by
half. Te decrease of nitrogen oxide emissions (Fig. 2) after the casting process was even more significant than that of sulfur oxide, dropping from a peak value of more than 90 mg/m³ to a maximum concentration of below 20 mg/m³. At the end of 2012,
the rejection of molds on
荷兰洪斯布洛克的Componenta公司，通过选用 粘结剂，减少了铸造厂及其周边有害气体的排放并 减轻了气味的影响。
Componenta铸造厂的年产能达23,000吨，大约 有150名员工进行2班和3班作业。铸造厂安装有18 吨/小时的热风冲天炉，还有2台10吨的保温炉。 呋喃生产线是半自动的，混砂能力为每小时80 吨。每小时可生产9个完整的铸型。铸型的最大尺寸 是3000x1750x800 mm。
因车间的合并，使铸件产量增加，铸造厂首次面 对越来越严重的气味排放引起的问题。铸件产量的 显著增长不可避免会引起排放物的增加以及在周边 区域产生严重的异味。现在的气味测量值表明排放 物的水平处于允许范围内。由于气味的排放是不稳 定的，气味排放的水平可以在6小时内进行分析，而 且由于特定的环境，舒适度将从-1转变到-2。由于 这些新的要求，气味水平必须降低到四分之一，从 而满足修改后的环境许可的要求。
2012年，Componenta公司决定测试一种含硫量 和芳香族化合物含量减少的新型呋喃树脂系统。对 RS固化剂和ASKURAN RS进行测试的目的是减少造 型线的硫、氮氧化合物和甲醛的排放，并将气味排 放降到最低。
通过降低甲醛的浓度，从0.18 mg/m³（工作极限 值是0.15 mg/m³）降低到约0.07 – 0.08 mg/cm³， 工作条件将得到明显改善。
二氧化硫排放（图1）减少了一半。铸造过程之 后，氮氧化物排放的减少（图2）比氧化硫更加明 显，浓度从超过90 mg/m³的峰值降到20 mg/m³以 下。
2012年年底，造型线上的废品率从0.6% 降到 0.2%。2010年和2012年，对同一铸型上的铸造区
Figure 1. The emissions of sulfur dioxides were reduced by 200%.
图1：二氧化硫的排放减 少200%。
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FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION June 2015
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