| 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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Audited Supplier
Hydrodewaxing catalyst with good hydrogen activation and oxygen regeneration property
Dewaxing is a new technology of petroleum refining growing up in the 1970's. The basic principle of this technology is by the using of the catalyst which adopts ZSM-5 molecular sieve with special pore path as carrier to split the straight chain or the chain similar to straight chain hydrocarbons into gasoline fraction and a small amount of C3,C4,thus the melting point of the fractions in the rest part can be reduced remarkably. This process can be completed without or with very small amount of hydrogen consumption. So that it can be widely used for reducing the freezing point of kerosene and melting point of diesel, it can also be used in the dewaxing process for lube oil.
FRIPP began to research catalyst 3881 in 1982. In 1988,the enlarged industrial production of this catalyst was carried out successfully by the Catalyst Plant FPC CNPC and then put into regular industrial production. It has received the national patent,the medal of superior item of patent,and the second grade medal of scientific and technology progress from SINOPEC.
The feature of this achievement is that the ZSM-5 molecular sieve is synthesized by a non-amine synthesis technique directly. Therefore this catalyst is of low cost,low initial reaction temperature,and the running period of it is longer than the same kind of imported catalyst. This catalyst also possesses good hydrogen activation and oxygen regeneration property. It can be hydrogen activated and oxygen regenerated repeatedly for several times. It can meet the requirements of dewaxing technology for treating waxy heavy diesel.
(I), Characteristics of the catalyst
| chemical composition | Ni-ZSM-5-Al2O3 |
| shape | cylinder |
| dimension mm | Φ1.8~2.0×3~8 (orΦ1.2~1.6×3~6trilobite) |
| bulk density kg/l | 0.65~0.75 |
| crushing strength N/mm | ≥9.8 |
| abrasion w% | <1 |
| specific surface area m2/g | >250 |
(II),Activity index
technology condition |
pressure MPa |
temperature ºC |
volume space velocity h-1 | hydrogen oil volume ratio |
| 4.0 | * | 1.0 | 420 | |
| Feedstock | the blending oil of AGO and light VGO of Shengli crude | |||
| activity evaluation | when reaching the initial equilibrium period, reaction temperature keeping steadily for 72 hours continuously, standard reaction temperature ≤380ºC considered as up to standard | |||
* Reaction temperature takes the pour point to control the product diesel fraction at
-10ºC as standard.
(III),Results of industrial running
The dewaxing device of Shengli Refinery of Qilu Petrochemical Corporation was put into producing in 1982, the first batch of catalyst used is the imported ZSM-5 catalyst, after that, in Oct.1986, it began to use the first generation amine type molecular sieve catalyst-catalyst 3862. From Oct. 1988, it adopted catalyst 3881 regularly. The effect of running was fairly good.
From the results of using the first batch of catalyst HT-3881 in the industrial dewaxing device, we can see that in case of the other technology parameters (such as space velocity etc.) are in the same condition the average reaction temperature of both the reactor inlet and bed layer are about 10ºC lower than using imported catalyst, and 15ºC lower than the standard reaction temperature. This shows that the activity of catalyst 3881 is rather high. From the yield point of view, we can see that in the initial running period, the total liquid yield of using domestic catalyst or the imported catalyst is about the same. But after hydrogen activated the yield of using the domestic catalyst has the tendency to increase gradually and the main product, diesel, yield is higher than the imported catalyst all along. This shows that the selectivity and stability of this catalyst is also rather high.
A comparison of the results of industrial runs between catalyst HT-3881 and the same kind of the imported catalyst are as following.
stage of production |
initial period of operation | before regeneration | initial period scaling of imported catalyst |
| scaling time | 88.10.25 | 89.9.14 | |
| feed | blending oil of AGO and light VGO of Shengli crude |
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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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Audited Supplier 
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