EZ-2 wide temperature zinc oxide fine desulfurizer is a new and efficient fine desulfurizer developed by Hubei Chemical Research Institute using a new formula and improved process. It can be used to remove various gases such as natural gas, oilfield gas, refinery gas, synthesis gas, shift gas, as well as liquid raw materials such as liquefied gas, naphtha, gasoline, etc. under a wide temperature range of 30-400 ℃, to ensure the normal use of nickel, copper, iron, and precious metal catalysts such as steam conversion, low-temperature conversion, methanation, methanol, methanol, methanol, ammonia synthesis, polypropylene, and carbonyl synthesis and improve product quality. This product has been tested by a well-known foreign company and its sulfur capacity has reached ICI; 235 Zinc oxide fine desulfurizer index, exported to the United States and the United Kingdom in 2002.
1. Performance Characteristics:
1. Fast reaction speed and high desulfurization accuracy. Use airspeed of 1000-4000h-1; Even when the imported H2S reaches 10000ppm, the exported H2S<0.03ppm.
2. Wide active temperature range. One formula, one process to solve desulfurization at room temperature~400 ℃ (in the past, different models of T302, T305, T306, T307, T308, T310 were used domestically).
3. High sulfur capacity. According to the National Chemical Catalyst Quality Supervision and Inspection Center, the sulfur capacity of EZ-2 is 20-30% higher than the industry standard, making it the highest sulfur capacity in China.
4. It can remove organic sulfur such as COS and RSH, with a sulfur capacity of 4%.
5. According to the determination of a well-known foreign catalyst company, the sulfur capacity is higher than ICI company's 32-5 zinc oxide desulfurizer, which has been exported to the UK.
2. Main physical and chemical properties:
|
Appearance |
Grey white cylindrical particles |
|
Main components |
ZnO with accelerators and special additives |
|
Specification (mm) |
Ф4× （4-12） |
|
Bulk density (kg/L) |
0.9~1.1 |
|
Strength (N/cm) |
≥ 40 |
|
Operating temperature (℃) |
30~400℃ |
|
Pressure (MPa) |
≤ 30 |
|
Airspeed (h-1) |
Airspeed: 1000~3000 |
|
Export H2S (ppm) |
＜0.03 |
|
H2S working sulfur capacity: |
|
|
Working sulfur capacity of organic sulfur (COS, RSH, etc.); 350℃ |
4% |
III. Reaction Principle and Quality Inspection Standards:
1. Reaction principle:
ZnO+H2S==ZnS+H2O △ H== -76.62KJ/mol
ZnO+COS==ZnS+CO2 △ H== -126.40KJ/mol
ZnO+C2H5SH==ZnS+C2H6+H2O △ H== -137.83KJ/mol
ZnO+CS2==2ZnS+CO2 △ H== -283.45KJ/mol
2. Inspection standard: Q/EHY‐ 033（1999）
This standard mainly refers to HG2508‐ 93 "Zinc Oxide Desulfurizer" was formulated based on the characteristics of EZ-2 zinc oxide as a wide temperature type fine desulfurizer in the original HG2508‐ Added a room temperature detection item to the content of 93.
