HCBBS Forum (Español)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

["

2019-11-01View Original

Thread Content

user
Reply #22019-11-02
Translate the following texts from chinese_simplified to spanish. Return ONLY
Reply #32019-11-02
assistant
Reply #42020-03-11
["
Reply #52020-04-02
工艺不一样,数值不一样
Reply #62020-04-02
研究表明,当气相中硫化氢的体积分数在0.3%以上的时候,可以较好的维持催化剂硫化态的结构。对于非贵金属硫化态催化剂的加氢过程,系统中应维持一定的硫化氢浓度,而对于采用还原态活贵金属的催化剂的加氢脱芳烃的过程,应尽量脱出硫化氢,原因是硫化态催化剂在一定的硫化氢浓度下其活性金属组分才不会被氢气还原,而维持搞活性的硫化态。
Reply #72020-04-02
对于非贵金属硫化型催化剂而言,以方面需要保持一定的硫化氢分压,以防止因催化剂硫的流失而引起活性的衰减;另一方面硫化氢的不利影响:1抑制脱硫活性,2与反应过程中的nh3形成(nh4)hs而杜塞系统3,当硫化氢浓度搞时会对设备产生腐蚀作用。因此在使用非贵金属催化剂的临氢催化反应系统中的硫化氢浓度通常要求保持在0.03%~0.05%。
Reply #82020-04-02
从原料角度上讲原料中硫含量大于3000ppm就要上硫化氢脱硫装置,低于500ppm就要连续加注硫化剂以保证循环氢中的硫化氢不低于50ppm,否则催化剂有被还原的危险!从加氢裂化反应机理上讲脱硫是可逆反应,过高的硫化氢浓度会抑制脱硫反应,但硫化氢的存在又会促进脱氮反应。一般循环氢中硫化氢浓度保持在1000-2000ppm为宜

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.