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换热器腐蚀机理分析

换热器腐蚀机理分析

换热器腐蚀机理分析

  从腐蚀介质分析及实际腐蚀情况判断,吸收稳定系统腐蚀基本上属于H:S一HZO型低温腐蚀,换热器腐蚀形态表现为碳钢均匀减薄、氢鼓泡和硫化物应力腐蚀开裂。在有水存在的条件下,HZS溶于水中形成酸性腐蚀介质,其主要反应为:Fe H25一FeS H:

From the analysis of corrosive medium, corrosion case judgment, absorption and stabilization system corrosion essentially belongs to the low temperature corrosion of H2S HZO, morphological erosion performance as a homogeneous carbon steel cut thin, bubbling hydrogen sulfide and should stress corrosion cracking. In the presence of water, HZS soluble in water to form an acid corrosion medium, the main reaction is: H25 FeS a H Fe:

  (1)采用气压机出口富气水洗或碱洗的方法可以有效地脱除其中的H乃,从而降低腐蚀介质浓度,减轻设备腐蚀程度。另外在设备制造及安装过程中应注意降低应力水平,塔体应进行整体热处理,塔内构件选用18一8等不锈钢材质。

(1) the is effective to remove the H from the air pressure machine, which can effectively remove the concentration of the corrosive medium, and reduce the corrosion degree of the equipment. Also in the equipment manufacturing and installation process should pay attention to reduce the stress level, the tower body should carry on the whole heat treatment, tower internals selection 18 8 stainless steel material.

  (2)为了彻底消除硫化铁自燃带来的安全危害,我们在2000年大修停工期间在吸收稳定系统试用了硫化铁钝化剂,能够有效清除设备上积结的FeS等无机垢,并且在设备内不产生沉积,不产生废气、废渣,排放物符合环保要求。使用后塔器内壁及换热器管束表面基本没有FeS沉积物,设备内异味也明显减轻,效果显著。

(2) in order to eliminate caused by spontaneous combustion of iron sulfide safety hazards, we in 2000 overhaul during the period of suspension in absorption and stabilization system trial of iron sulfide passivation agent can effectively remove the equipment on the product structure of the FESinorganic, and produces no deposition in the equipment, does not produce waste gas, waste residue and emissions meet environmental protection requirements. The inner wall of the tower and the heat exchanger www.hreqi.com   tube bundle have noFeSsediment, and the peculiar smell in the device is obviously reduced, and the effect is obvious.

  环保效益(1)油气回收投用后,油气不再排放到大气中,有利于改善大气的质量。(2)有利于企业推行清洁生产,保护职工的身体健康。(3)实现对主要环境因素进行控制,达到1501400环境保护体系的要求,使装油台逐步实现健康、安全、环境一体化。

Environmental benefits (1) after the oil and gas recovery, oil and gas is no longer discharged into the atmosphere, it is conducive to improving the quality of the atmosphere. (2) is conducive to the implementation of cleaner production, to protect the health of workers. (3) to control the main environmental factors, to achieve the requirements of the 1501400 environmental protection system, so that the oil stage to achieve the gradual implementation of health, safety, environmental integration.


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