| CAS No.: | 1314-13-2 |
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| Formula: | ZnO |
| Classification: | Other Oxides |
| Grade Standard: | Industrial Grade |
| Kind: | Acidic Oxide |
| Quality: | First Class |
| Samples: |
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| Customization: |
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Zinc oxide desulfurization adsorbent in production of hydrogen, ammonia, alcohols and organic chemicals
1. Features and Scope of Application
Zinc Oxide Desulfurization Adsorbent T305 is widely applicable to feedstock purification processes in production of hydrogen, ammonia, alcohols and organic chemicals. It can remove hydrogen sulfide from various feed gases (oils) to as low as less than 0.1ppm.
Main reaction of the desulfurization process is as follows:
H2S+ZnS=ZnS+H2O
The adsorbent also is capable of converting and absorbing simple organic sulfur such as COS and CS2.
Adsorbent T305 is highly adaptable. It can work in severe conditions with high sulfur absorption capacity, high activity, high strength , good sustainability for activity and sulfur absorption capacity, and good tolerance to high steam. It can obtain satisfactory operation results both at higher ( about 400ºC) and lower (about 200ºC) temperature.
2. Composition and Physical Properties
| Appearance | white or light-gray extrusions |
| Particle size , mm | Φ4mm×4-15mm |
| Bulk density, kg/l | 1.0-1.3 |
| loss On Ignition, % | max2 |
| Zinc oxide content, % | min95 |
3. Quality Standard
| loss on abrasion, % | max6 |
| Sulfur capacity, % | min20(220ºC) min30(350ºC) |
4. Normal Operation Condition
Feedstock: light oil , residue cracking gas, natural gas, synthesis gas, coal gas and shifted gas, with recommended hydrogen sulfide concentration of less than 250 ppm.
| Pressure, MPa | ambient to 4 |
| Temperature, ºC | 200~400 |
| Steam/feed gas | 1~1.5 or dry gas |
| Space velocity, h-1 | 1000~3000(gas) 1~6(liquid) |
| Sulfur in processed stream, ppm | <0.1 |
5. Poisons
Oxygen: oxygen content in feed gas(oil) should not exceed 0.5%. Excessive oxygen may lower breakthrough sulfur capacity of the adsorbent.
Chlorine: Chlorine presence in any state will affect desulfurization result.
6. Loading
Loading depth: recommended loading depth/ reactor diameter ratio is 3, so as to ensure enough residence time of the gases in the bed. Configuration of two reactors in series can improve utilization efficiency of the adsorbent.
Loading procedure:
(1) Clean the reactor before loading;
(2) Screen the adsorbent to remove dust;
(3) Load a layer of refractory spheres at both top and bottom of the adsorbent bed. The refractory is separated from the adsorbent by stainless nets with mesh size smaller than the adsorbent;
(4) Use special tool to ensure evenly distribution of the adsorbent both in the center and around the inner wall;
(5)Inspect uniformity of the bed during loading. When inner-reactor operation is needed, A wood plate should be put on the adsorbent for the operator to stand upon.
(6)A stainless net and a 50mm layer of refractory spheres should be installed at the top of the adsorbent bed so as to prevent entrainment of the adsorbent and ensure even distribution of the gas stream.
7. Start-up
(1) Replace the system by nitrogen or other inert gases until oxygen concentration in the gas is less than 0.5%;
(2) Preheat the feed stream with nitrogen, purge gas or synthesis gas under ambient or elevated pressure;
(3) Heating speed: 30-50ºC/h from room temperature to 120ºC, 120ºC for 2 h, 50ºC/h over 120ºC until required temperature is attained. Keep at the temperature for 4h.
(4) Elevate the pressure at 0.5MPa/10 min during the thermostatic steps until the operation pressure is attained.
(5) After pre-heating and pressure elevation, the system should be operated at half load to regulate temperature, pressure and flowrate. Then raise the load steadily when operation becomes stable till full-scale operation.
(6) If pressure elevation is done prior to pre-heating, careful control is needed in accordance to the procedure above. Rapid temperature rise may cause stress and result in pulverization of the adsorbent.
1. We have over 10 years producing experience, adopt advanced production and inspection equipment,optimize production process, to guarantee and improve product quality.
2. Provide samples free of charge.
3. Factory price, no middleman increases costs.
4. Packaging can be customized according to customer requirements.
5. We provide commercial invoice, packing list, shipping order, COA, health certificate and certificate of origin, etc. If your market has any special requirements, please let us know.
6. We can accept various payment methods, such as L / C, t / T, D / A, D / P, O / A, PayPal, Western Union,etc.
7. Timely delivery. We have good cooperation with many professional freight forwarders. Once you confirm the order, we can send the products to you.
1) Can we print our logo on the product ?
Of course, we can do it. Just send us your logo design·
2) Do you accept small orders ?
Yes. If you are a small retailer or starting up business,We are definitely willing to grow up with you. And we are looking forward to co-work with you for a long term relationship.
3) How about the price? Can you make it cheaper ?
We always take the customer's benefit as the top priority. Price is negotiable under different conditions, we are assuring you to get the most competitive price.
4) Do you offer free samples ? A 5Stars Review = A Free Sample
It's appreciated that you could write us positive reviews if you like our products and service, we will offer you some free samples on your next order.
5) Are you able to deliver on time?
Of course!we specialised in this line for many years,many customer make a deal with me because we can deliver the goods on time and keep the goods top quality!
6) What are your payment terms ? Any third party payment ?
We usually accept T/T, Alibaba trade assurance, Western Union, L/C.
7) Can I visit your company and factory in China?
Sure. You are very welcomed to visit our company in Zibo, China. (1.5H drive way from Jinan)
8) How Can I place an order?
You could just send us inquiry to any of our sales representatives to get detailed order information, and we will explain the detail process.
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