化学
专用于高腐蚀性和有毒化学工艺的特种合金和氟衬里阀门。零排放波纹管密封阀门和用于化工行业的特种合金结构。
Recommended Solutions
Hastelloy阀门
Hastelloy C276 valves for highly corrosive media including sulfuric acid, hydrochloric acid and chlorine.
标准截止阀
Zero-emission bellows seal design for hazardous and toxic media per TA-Luft.
Lubricated Plug Valve
Sealant-injected plug design for reliable sealing in severe service applications.
PFA衬里截止阀
PFA lined globe valve for throttling corrosive fluids. Full lining coverage including body, bonnet and disc. TA-Luft compliant zero-emission option.
PTFE衬里蝶阀
Wafer type PTFE lined butterfly valve for large-diameter corrosive pipelines. Lightweight and cost-effective for chemical plant isolation.
Applications in 化学
酸生产(H2SO4、HCl、HNO3)
硫酸厂使用浓度为98%的浓硫酸,温度高达200℃。稀硫酸使用铸铁或聚四氟乙烯(PTFE)衬里的阀门;浓硫酸则需要特殊合金阀门。盐酸生产需要聚四氟乙烯(PTFE)衬里的阀门或哈氏合金C-276阀门。硝酸生产中,稀硫酸使用304L不锈钢阀门,浓硫酸使用钛合金阀门。
苛性碱和氯碱
氯碱厂通过电解生产氢氧化钠(NaOH)、氯气(Cl₂)和氢气(H₂)。90℃的苛性钠(50% NaOH)需要使用镍或镀镍阀门——不锈钢在50℃以上会发生苛性脆化。干燥氯气需要使用碳钢阀门(含水量<0.1%);湿氯气需要使用哈氏合金或钛合金阀门。氢气应用则使用具有相应材料等级的碳钢阀门。
溶剂和有机化学品
溶剂生产(甲醇、乙醇、丙酮、甲基乙基酮)涉及挥发性有机化合物,其排放限值非常严格。波纹管密封球阀可实现TA-Luft零逸散排放。对于高纯度溶剂,采用电抛光316L不锈钢阀门和卫生级连接件可防止产品污染。聚四氟乙烯填料可防止溶剂吸收和膨胀。
化肥生产
氨合成(哈伯-博世法)在150-300巴和400-500℃的条件下,使用氢气/氮气混合气体。锻钢阀门搭配特殊合金阀芯,能够应对这些极端条件。尿素生产使用高腐蚀性的氨基甲酸铵,因此需要使用316L UG(尿素级)或钛衬里阀门。磷酸生产则使用聚四氟乙烯(PTFE)衬里阀门来输送浆料。
Industry Standards
[ASME B16.34] 阀门 -- 压力-温度额定值
压力边界要求
[API 598] 阀门检验和测试
工厂测试要求
[ISO 15848-1]逃逸排放——型式测试
化学品服务的排放控制
[TA-Luft] 清洁空气法
VOC排放限值
[ASME BPE] 生物加工设备
高纯度化学品服务
[NACE MR0175] 酸性介质材料
含H2S化学品服务
Materials Available
- ●316L
- ●Hastelloy C-276
- ●Hastelloy B-2
- ●Monel 400
- ●Nickel 200
- ●Titanium
- ●Zirconium
- ●PTFE-Lined Steel
- ●PFA-Lined Steel
Frequently Asked Questions
何时应该使用哈氏合金阀门,何时应该使用聚四氟乙烯衬里阀门?+
什么是尿素级(UG)不锈钢?+
如何防止化工厂发生逸散性排放?+
你们能提供表面经过特殊处理的阀门吗?+
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