project profile
To ensure that the A958 deoxidation protection sulfur recovery catalyst, A988 TiO2 sulfur recovery catalyst produced by Shandong Xunda chemical group CO., Ltd. are successfully used at the certain CO., Ltd., clear right and responsibility of both parties. The certain CO., Ltd. (hereinafter referred to as buyer) and Shandong Xunda chemical group CO., Ltd. (hereinafter referred to as seller) achieve this contract through friendly negotiation.
technical requirements
One. Requirements of outlet gas of one-stage Claus reactor
At the conditions mentioned and the range of operating elasticity, sulfur recovery conversion ≥70%.
After reaction, H2S content <2% (mol%), SO2 content <0.2% (mol%).
The hydrolysis rate of organic sulfur (COS and CS2) ≥99%.
Two. Requirements of inlet gas of catalytic oxidation reactor
At the conditions mentioned and the range of operating elasticity, sulfur recovery conversion ≥85%.
After reaction, SO2 content <0.05% (mol%).
Three. The operating temperature and temperature rise of catalyst
Operating temperature of Claus reactor: 200~400℃, temperature rise: 50~200℃.
Operating temperature of catalytic oxidation reactor: 200~400℃, temperature rise: 50~200℃.
Four. The most heat-resistant temperature and time
The most heat-resistant temperature is 500℃, continually heat-resistant time should not exceed 24 hours.
Five. Catalyst lifetime: >4 years
Six. Sulfur generated in reactor reach the premium product of China sulfur standard (GB/T2449.1-2014). See in the table:
|
NO. |
Project |
Unit |
Index |
|
1 |
Sulfur |
%Wt |
≥99.95 |
|
2 |
Water content |
%Wt (ppm) |
≤2.0 |
|
3 |
Ash |
%Wt (ppm) |
≤0.03 |
|
4 |
Acidity (count as sulfuric acid) |
%Wt |
≤0.003 |
|
5 |
Fe |
%Wt |
≤0.003 |
|
6 |
As |
%Wt |
≤0.0001 |
|
7 |
Organic compound |
%Wt |
≤0.03 |
|
8 |
Compound after sieving (particle size >150μm) |
%Wt |
≤0 |
|
Compound after sieving (particle size75μm~150μm) |
%Wt |
≤0.5 |
property indexes and performance guarantee
The picture is A958.
The guarantee value of catalyst performance
The performance of catalyst is excellent, it exhibits excellent strength and the capability of anti-powdering at normal operating lifetime range. Compressive strength ≥100N/cm, the sieving rate of finished product ≤1%, ensuring at the same time that won't cause bed resistance rise because of the self-problem of catalyst at normal operating conditions.
The performance indexes are as follows:
A958 A988
|
Color and shape |
Red-brown sphere |
Color and shape |
White strip |
|
Size, mm |
Ф4~6 |
Size, mm |
Ф (4~5) × (5~20) |
|
Specific surface area, m2/g |
>260 |
TiO2 content, % |
≥85 |
|
Specific surface area, m2/g |
>100 |
||
|
Pore volume, ml/g |
>0.3 |
Compressive strength, N/cm |
≥120 |
|
Bulk density, kg/l |
0.70~0.90 |
Pore volume, ml/g |
≥0.20 |
|
Average compressive strength, N/granule |
>130 |
Bulk density, kg/l |
0.95~1.05 |
|
Wear rate, %(m/m) |
<1.0 |
Satisfying each technical requirement mentioned, the product provided by seller to buyer satisfy the operating requirements of buyer, overall sulfur recovery rate of sulfur generation part of unit >98%.
At the normal processing conditions provided, seller promises that the lifetime of catalyst >4 years.
acceptance and performance assessment
The picture is A988.
Catalyst satisfies the enterprise standards of seller:
A958: Q/0305SXH008-2023
A988: Q/0305SXH014-2023
Seller is responsible for transporting the catalyst to the place designated by buyer (negotiated by contract), buyer checks the catalyst according to the product quality standards, technical requirements, performance promise of sulfur recovery catalyst mentioned and the contract signed by both sides.
Performance assessment
Performance assessment should be performed in 3 months after the production situation is normal operating. At the processing conditions that satisfy this contract mentioned (at normal operating situation and range), if buyer operate according to the load and start-off measure provided by seller, the catalyst can't reach the lifetime and effect promised by seller because of the quality problem of catalyst or the measure problem provided by seller, seller will pay for it. The standards according to the commercial contract negotiated or the requirements of user's unit.
service
Provide enterprise standards, quality inspection report and product qualified certificate of catalyst.
Provide early-stage service, dispatching experienced technical individuals to check out the sulfur recovery process and processing indexes, provide reasonable advice and optimization of processing measure, ensure that the start is successful.
Provide load, start-off measure and operation introduction of catalyst, at the same time, make measures that during load production and normal production in early-stage start according to the process features of buyer. Writing the operating points and cautions according to the live date of start.
Provide technical service of catalyst start, dispatching experienced technical individuals to the live and cooperate with buyer to make load and start-off measures of catalyst, performing technical service and staff training at the same time.
