Zibo Xiangrun and Shandong Bairui professionally manufacture chloride purification-Activated alumina adsorbent.
Where does chloride come from?
Chlorides are introduced into the refinery flowsheet in several ways. Some crude sources can bring both inorganic and organic chloride content. Desalter processes and chemical additives are used to remove chlorides and prevent corrosion and fouling caused by these chlorides. The other major source is from the Catalytic Reforming Unit (CRU). This unit upgrades straight run naphtha value for use in the gasoline pool or as petrochemical feedstock. Chlorides are injected onto CRU catalyst to attenuate acid function required to provide the best naphtha property enhancement. These chlorides are not permanently held on the catalyst and progress into the product streams, which are primarily hydrogen-rich offgases, stabilized naphtha, and LP
Why is chloride important?
Chlorides have significant effect on the integrity of refinery equipment, particularly around and downstream of the CRU. This is critical on the hydrogen-rich product as it is typically used as a key hydrogen feedstock for a number of high value units around the refinery. Two major issues come from not addressing chloride content in CRU product streams: corrosion and fouling.
Corrosion
Stress corrosion cracking of stainless steel (particularly 300-series) can be an issue for downstream hydrogen users. For example, many refiners report corrosion issues within feed-effluent exchangers in hydrotreating & hydrocracking units that utilize CRU-produced hydrogen. Within the CRU, the product stabilizer tower falls victim to tray and vessel corrosion. Equipment corrosion results in the need for more frequent inspection and equipment replacement, increasing risks and costs for the refiner.
4 Fouling
Inorganic chloride can, in the presence of adequate ammonia, form ammonium chloride salts. These salts can cause plugging in the CRU stabilizer tower as well as in downstream hydrotreater exchangers. Fouling will limit unit rates and cause the need for additional maintenance operations, affecting operability and profitability for a refiner.
What makes an effective chloride guard?
Chloride guards are specially designed to provide the maximum value to the refiner. Key characteristics for a chloride removal solution are:
- High chloride adsorption
- Low/no side reaction tendency
- Optimum mass transfer characteristics
- Robust to wetting, fouling and chloride spikes
Zibo Xiangrun and Shandong Bairui ‘ alumina chloride guards, such as promoted aluminas that are pervasive in the market, have long been known as offenders for side reactions such as organic chloride formation and green oil formation. J
XR104 activated alumina adsorbent for removal of chloride is the star product in the world. XR104 is the special product in chloride purification. It is the sames as BASF CL750.
Zibo Xiangrun and Shandong Bairui offers a range of adsorbents for the removal of HCl, ammonium chlorides and organic chlorine compounds, depending on the hydrocarbon feedstock and operating conditions. XR104 activated alumina adsorbent is used for liquid phase applications, while xr104 adsorbents are recommended in the gas phase.
XR105 chloride adsorbent promoter on Alumina catalyst is used for liquid and gas phase applications for removal of HCL in the hydrocarbon feed stocks.
Zibo Xiangrun and Shandong Bairui operate its manufacturing assets to meet the most stringent quality criteria. We ensure that all of our facilities meet stringent ISO global manufacturing standards. We ensure that only high quality raw materials are used in safe manufacturing environments to produce the best available products in the market.. We also pride ourselves in customer focus, and can be flexible in delivery options around packaging, etc.