柴油车用催化转化器
柴油发动机尾气排放污染物：co、hc、nox、pm 四种污染物
catalytic converters for diesel vehicles
pollutants in the diesel engine tai gas: co, hc, nox and pm
doc（柴油发动机氧化型催化剂）
氧化co、hc 和pm 中的可溶性有机物（sof）， 部分氧化
pm 中的碳颗粒（soot）
doc (diesel oxidized catalyst)
oxidation of soluble organic fractions (sof) in co, hc and pm and partial
oxidation of soot in pm
doc 可单独使用或与poc、dpf 和scr 配合使用
the doc can be used alone or used in conjunction with poc, dpf and scr.
poc
通常poc 由金属纤维或金属孔板等材料制成，可经过处理后涂覆催化剂涂层，其特点是
非壁流式，不会堵塞，免维护，成本较低，缺点是对pm 的过滤效果较低。
usually the poc is made of materials such as metallic fibers or metallic orifice plates and can be coated
with catalyst coating after treatment. it is non-wall-flow, anti-blockage, low-cost, but is not very effective in
filtering pm.
dpf
柴油发动机连续再生式微粒捕集器
带催化剂涂层的dpf 通常称为cdpf
diesel particulate filter with continuous regeneration
the dpf with catalyst coating is usually referred to as the cdpf.
微粒捕集器dpf&cdpf
diesel particulate filter
dpf 可分为sic 和堇青石两种
优缺点对比
sic 耐热震性能好，价格高，制备困难
堇青石价格较低，耐热震性能不如sic
dpf can be pided into sic and cordierite.
comparison in advantages and disadvantages.
the sic provides good heat and shock resistance but is expensive and difficult to prepare.
the cordierite is relative inexpensive but is not as good as the sic in term of heat and shock
resistance.
再生：除去过滤器中微粒的过程称为再生。再生方法包括燃烧再生、加热再生、反吹再生、
清洗再生、催化再生等。
regeneration: regeneration is the process of removing the accumulated particulate from the filter. the
regeneration methods include burning regeneration, heating regeneration, blowback regeneration, washing
regeneration, catalytic regeneration.
天然气（cng/lng/lpg）车用催化剂
catalysts for natural gas (cng/lng/lpg) vehicles
天然气发动机尾气排放特征：除co、nox 外，
hc 的主要成分为ch4，ch4 是最稳定的hc
化合物，ch4 和nox 的偶联反应比其他hc 与
nox 的偶联反应困难，导致nox 转化难度大，
同时ch4 自身氧化难度也比较大，因此，汽油
发动机催化剂不能运用于天然气发动机的尾气净
化。
英泰公司针对天然气发动机特点，研发了满足欧
iv 和欧v 以上的催化剂产品，解决了ch4、稀
燃lpg 发动机的净化难题，该产品具有优异的活
性和耐久性能。

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北京英泰世纪环境科技有限公司

13717887606
中国 北京