Unlike the former rotating type with an agitator, ours is a static type, which is featured in more homogeneous aging effect with no back-mixing. By adopting a special inner structure, each material molecular in the static aging vessel will have equal residence time (staying time). On the contrary, the residence time of each molecular in a rotating aging vessel is uneven, which shows a normal distribution. Our aging time is adjustable from 0-60 minutes by controlling the liquid level in the vessel. Normally, the aging time is set to be 30 minutes; when a higher active matter percentage is required, for example, 97.5% - 98% LABSA, the aging time can be set to 45 - 60 minutes. Besides the performance, power consumption and maintenance requirements are reduced due to the nature of static equipment.

Stripping tower 79T1 is static equipment, without motor or rotating parts. Compared to outdated technology, our stripping tower doesn’t need maintenance. WEIXIAN designs the stripping tower based on the characteristic of sulfonated/sulphonated products. In the stripping tower, degassing, water removal, dioxane stripping, and cooling can be achieved in the same equipment, which can save power consumption, and ensure stable running and product quality.

The high-shear neutralization reactor is composed of multiple high-speed dispersing shearing discs, and the mechanical seals and bearings are all customized for high-speed mixing/shearing purpose. Stable operation at 960 rpm.   The neutralization reactor has the advantages of efficient and uniform mixing, flexible operation, stable system pressure, and low failure rate.

The conversion tower adopts vertical SS304 stainless steel packed structure with a temperature resistance of 700°C.   It is featured in stable conversion rate, flexible operation and temperature control, and maintenance-free. Four-layer packed tower, each layer is filled with V₂O₅ catalyst, which is a combination of low-temperature and medium-temperature catalysts, which can not only maintain the advantage of low light-off temperature but also ensure a conversion rate greater than 98%. This feature greatly improves the start-up preheating efficiency and shortens the preheating time.   There are corresponding thermometer interfaces on the top and bottom of each bed to precisely control the temperature and ensure the conversion efficiency. Each bed has a manhole for on-site catalyst loading.

The heat-pipe exchanger has high heat transmission efficiency. The equipment also has a compact structure, and small thermal side flow resistance. Its structure is safe, reliable, and better than the heat exchanger of other structures, and the damage of a single (or few) heat pipe will neither affect the overall performance of the equipment nor affect the plant production. The waterway is outside the flue, so it requires no shut down for replacement and overhaul. Design life is 10 years plus. This equipment is used in combination with the start-up pre-heater, which produces steam before cold start-up, external steam supply is no needed.   The recovery rate is 100kg sulfur burning generates 250kg steam. The first/second stage recovery of exhaust gas generates steam, and the third stage recovery produces hot water with efficiency of 36.5%, 44.2% and 67.3% respectively.

Our Control System adopts Siemens, ABB, Supcon, Hollysys, Honeywell or equivalent brands. We adopt on-site instruments from international brands, such as massflow meter from Emerson; dewing point meter from Michelle; pH meter from Mettler Toledo; transimitter from YOKOGAWA etc.,Major electrical components are all internationally famous brands such as SIEMENS, SCHNEIDER, or ABB.   The whole plant will be fully automatically controlled at a high level. We have in-house engineers for the programming and configuration. Remote operation parameter adjusting can be realized, if get the permission from the owner.  

In addition to focusing on technology, we also attach great importance to technical services and training for customers. No matter where our customers are in the world, we can respond to their needs and problems within 10 hours. Technicians can be dispatched to anywhere in the world within 72 hours. Thanks to the reliability of the plant, WEIXIAN sulphonation plant can achieve an operation rate of 330 days / year. All plants have one-year guarantee period. Meanwhile, we will advise customers to purchase our standard spare parts kit to facilitate the timely replacement of vulnerable parts; the spare parts kit shall be provided at the cost price.     WEIXIAN’s technical services are including:   1. Free technical consultation. 2. Feasibility study in the early stage of the project. 3. Quotation and proposal of turnkey sulphonation plant and equipment. 4. Renovation and revamp of old sulphonation plant. 5. Design and engineering of customized turnkey sulphonation plant and equipment. 6. Installation of the plant. 7. Remote or on-site technical supports and commissioning. 8. Training of the buyer's technical personnel. 9. Other technical services related to sulphonation.