TCDTO-1 Reformate Refined Catalyst

An alternative refined catalyst to clay processing in reformate

High-performance and highly stable catalyst.

Alternative of  activated clay

Reduced solid waste

Long operating cycles

Capital saving

 

 TCDTO-1 reformate refined catalyst is the high efficient refined catalyst designed by CNOOC Tianjin Chemical Research and Design Institute for removing olefin which is produced in reformate oil decvice，TCDTO-1 refined catalyst ,called TCDTO-1 reformate refined catalyst. It is the main replacement of activated clay employed in the pre-treatment equipments of PX process to remove the olefins from C8+ mixed aromatics. It is featured as wide operating temperature range, long life cycle and repeated regeneration capability .

Shenzhen Rising Technology Co.,Ltd is designated as the Authorized Manufacturer and Distributor for this product and its product mix as well .

1). Main advantages of TCDTO-1 Reformate Refined Catalyst

 

　　　Due to frequent replacement, clay waste pollution, reduced clay resources and high security risks in frequent replacement, high activity refined catalyst has become an inevitable choice to replace the conventional activated clay adsorbents.

　　　Compared to the conventional activated clay adsorbents, TCDTO-1 refined catalyst has the following major advantages:

1.  Longer cycle life:

Under the same conditions of use, single cycle life is more than 8 times that of clay,

1.  Wider temperature Range :

TCDTO-1 refined catalyst can be actived at the temprature of 130 ℃.

1. Repeated regeneration

   The catalyst can be used repeatedly by regeneration, thus the solid waste emissions will be reduced from 85% to 90%.

1. Decreased Bromine Index (BI)

The BI decrease can protect the subsequent equipments, and the extended operating cycle can reduce the frequency of maintenance.

 

　　　2). TCDTO-1 Refined Catalyst Specifications Descriptions

 

2.1  What is TCDTO-1 Refined Catalyst Appliance Principle ?

The core active component of TCDTO-1 is molecular sieve.

 As with activated clay, molecular sieves refined catalyst also adsorb the olefins with strongger polarity in reforming aromatics through porous material, so as to achieve the purpose of refining. However, molecular sieves have a longer operation cycle life than clay due to higher acid content, better acid distribution, and stronger and more stable acidity , , meanwhile, due to their unique nature, sieves can be repeatedly regenerated.

2.2  The Main Physical Indexes of  TCDTO-1 Refined Catalyst

 

      The Main Physical Indexes of TCDTO-1 Refined Catalysts are listed as follows . They can also be customerized .

 

Table 2.1 Refined Catalyst Physical Indexes

items   Units Indexes Shape     white strip Diameter   mm Φ2～3×5～15 Rate of wear   ％ ≤0.1 Compressive strength crush strength N/cm ≥80 Compressive strength coefficient of variation (C.V.) OF  Crush strength   ≤0.4 2.3 Where are TCDTO-1 Refined Catalyst Applied ? TCDTO-1 is developed for PX front purification device, currently applicable to C8+ above feed refining process in the reforming tower bottom. Olefin and colloid content in feed have a great effect on single cycle life of refined catalyst. Its applicable feed indicators are as follows:                      Table 2.2 indicators for reactor feed Items,Units Indicators Bromine index  mg/100g 400～2000 Gum  mg/100g ≤20  Inlet temperature and bromine index affect single cycle life of refined catalyst. Matching process should be paid attention to when used.   　　　2.4  TCDTO-1 Refined Catalyst operating Conditions      According toTCDTO-1 catalyst refining principle, temperature rising and pressure increasing benefit the operation, but in generalTCDTO-1 catalyst become active at 130℃, in order to extend the life of refined catalyst, operate at low temperature initially. Operating pressure requirements are similar to clay, but ensure the feed is in the liquid state, therefore the reaction pressure should be adjusted according to the catalyst operating temperature. The refining process recommends operating conditions to be at the maximum pressure the device allows, under high pressure, the single cycle life of the refined catalyst can be appropriately extended.            Table2.3 TCDTO-1 Refined Catalyst Operating Process Indicators Items,Units Indicators Reactor pressure MPa（G） 1.0～2.5 WHSV，h-1 0.5～2.0 Normal operating temperature  ℃ 130～210 2.5  Performance Guarantee 　　　  Oil Index after TCDTO-1 Refined Catalyst Process as table below:      Table 2.4 Oil Index after TCDTO-1 Refined Catalyst Process   No. Components Unit Value 1 feed Bromine index 400～600mgBr/100g single cycle life,month ≥8 2 feed Bromine index 600～800mgBr/100g  single cycle life, month ≥6 3 feed Bromine index 700～1200mgBr/100g  single cycle life, month ≥4 4 feed Bromine index ≥1000mgBr/100g  single cycle life, month ≥3 According to preliminary tests, deactivated refined catalyst can be reused after regeneration, with no significant decline in activity after regeneration, at the same time, according to the changes of physical indicators, we s est that the frequency of regeneration can be more than 3 times.  3）. Successful Cases : 　　3.1  TCDTO-1 refined catalyst has achieved industrial applications in the 1 million tons / year PX devices of CNOOC Huizhou Refinery since November 2011, and has so far been running at low temperature. With conditions of feed Bromine index above 600 ~ 1900 mgBr/100g (an average of about 1200 mgBr/100g), refined catalyst outlet Bromine Index is ≤ 20 mgBr/100g, xylene re-distillation tower top Bromine Index shows  ≤ 1.0mgBr / 100g, other outlet indicators are basically the same as activated clay.   3.2 TCDTO-1 is also widely used in China Petroleum & Chemical Corporation Shanghai Branch, China Petroleum & Chemical Corporation Tianjin Branch, China Petroleum & Chemical Corporation Jinling Branch, etc.