Product features and uses
LYTS 971 catalyst is a high activity of Claus and de "leakage protection O2" dual functional catalyst for sulfur recovery. The physicochemical properties of the catalyst and technical indicators have reached the international advanced level, is domestic first and leading position in technology, if matched with LYTS811-300AL2O3 catalyst, in the same apparatus and the same conditions, the total sulfur conversion rate can be increased by 1 - 1.7%, is particularly suitable for use in thesulfur recovery unit for acid gas H2S content or flow changes greatly.
Industrial production has confirmed the superior performance of LYTS 971 catalyst,the product performance of LYTS 971 catalyst and matters needing attention are as follows:
The physical properties of the catalysts
Color and shape Red brown ball Dimensions (mm) Φ4～Φ6 The main chemical composition AL2O3+Catalyst The specific surface area (m2/g) >260 Bulk density (kg/L) 0.70～0.82 The average crushing strength (N/) >130 The wear rate (%) <0.3
The use of the catalyst and the matters needing attention
LYTS 971 catalyst for sulfur recovery unit of any level of reactor with AL2O3 orAL2O3 based catalysts layered filling can be used, the full bed filling effect. In the hierarchical loading when in use, the upper part of LYTS 971 catalyst in the reactor bed, accounting for the total volume of bed layer of at least 1/3, invasion of sulfateto protect or reduce the following AL2O3 or AL2O3 based catalyst due to the existence of the process gas leakage "O2" in the impact damage, thereby prolong the service life of the catalyst.
1, catalyst loading
The catalyst filling should be carried out in dry conditions, to avoid the rainy weather or environment humidity under the loading of catalyst, so as not to affect the strength.
The loading of catalyst, to the first reactor internal clean, will comb board installed in place, with 8 mesh stainless steel net, successively stacked high flattening100mm Φ 20mm ceramic balls and 50mm Φ 10mm ceramic balls, and then loading of catalyst, requires the grate and screen can at least ensure the use of three years tim
The catalyst consists of a barrel is poured out, such as found in fine powder is more, need through 8 mesh to 10 mesh used to sieve. When packing, should be the catalyst first into the bag, then lifted into the reactor, the catalyst drop height of not more than 500mm.
Finally, catalyst loading process should pave the way for the board, fillingpersonnel must stand in the wood on the loading operation, prohibited the use ofmetal utensils mining catalyst. Catalyst loading to a predetermined height,application of wooden tools will be the catalyst surface and then paving, paving a layer of high 100mm Φ 10mm porcelain ball on top, to slow down the impact of airflow on the catalyst surface
The catalyst is loaded, should be immediately closed good hole, avoid water and process gas into the reactor should be enabled before the start, should be preceded by dry air purge, remove the bed powder.
Packaging and shipping
Woven bag with LYTS971 catalyst, lined with plastic bag (or according to userrequirements packaging). The catalyst should pay attention to moisture, avoidrolling in the process of transportation, collision, intense shock, should rainfacilities. The catalyst should be stored in dry and ventilated warehouse, to preventcontamination and moisture.