Technobell Technology was granted a patent for »Double zone tubular reactor and method for carrying out maleic anhydride production by n-butane oxidation«

Technobell Technology is proud to announce that we have been granted a patent by the US Patent & Trademark Office for »Double Zone Tubular Reactor and Method for Carrying Out Maleic Anhydride Production by N-Butane Oxidation«. This highlights the innovations that are being carried out in our petrochemical department. We would like to thank our colleague COO Gabor Toth, the inventor, and his team who are focused on constant process and equipment design developments.

On this occasion Gabor Toth said: »Receiving this Patent is not only a validation of our know-how but even more confirmation from a world-renowned independent institution about the value of our R&D activities that result in new and useful innovations. We believe that by the application of Technobell’s exclusive State-of-the Art Maleic Anhydride Technology and Double Zone Reactor, our Clients will be satisfied owner of the market leading production performance.«

 

Abstract from the patent »Double zone tubular reactor and method for carrying out maleic anhydride production by n-butane oxidation«

A tubular reactor that produces maleic anhydride from a gas mixture containing n-butane and oxygen includes a first reaction zone including an inlet for the gas mixture and a second reaction zone including an outlet for a reaction gas mixture, a plurality of tubes extending in an axial direction through the first and second reaction zones, a temperature control system, configured for controlling a reaction temperature in each of the reaction zones independently, includes a heat transfer system for each of the reaction zones configured for controlling the temperature of a liquid coolant flowing through one of the reaction zones, and a circulation pumping system configured for controlling flow conditions of the liquid coolant flowing through the reactor and one of the heat transfer systems, and a preheating arrangement configured for preheating the gas mixture such that the gas mixture enters the first reaction zone at a predefined inlet temperature.

Middle East is investing in a new Maleic Anhydride plant using Technobell’s Technology

 

After completing the engineering of the new 22.000 TPY Maleic Anhydride plant based on Technobell’s License the production plant erection is currently ongoing.

The expected start-up of the newest Middle East Maleic Anhydride plant is foreseen in the beginning of 2020 and will be under the supervision of Technobell’s experts.

Technobell is going to support the plant operations management during the initial plant operating period involving three former Maleic Anhydride plant managers of Technobell.

Technobell would like to thank all visitors, partners and customers who visited our booth at JEC World 2019 in Paris.  Our team of experts from the GRP, Polyester Resins and Petrochemical departments where excited to meet you and  share their knowledge about the composite industry.

Technobell’s Double Zone Maleic Anhydride Reactor Ready for 60.000 TPY Capacity.

The Research and Development Team from Technobell’s Technology Department has successfully finished the design of its new High capacity Double Zone Reactor for n-butane based Maleic Anhydride production with single train capacity up to 60.000 TPY.

The most advanced reactor is a result of constant research and development of Technobell’s engineering team, well-known for its continuous focusing on technology know-how and process equipment improvements based on market demands and known bottlenecks of worldwide operating reactors.

The new reactor combines the advantage of the revolutionary performance of Technobell’s licensed Double Zone Reactor and high production capacity resulting in a market leading production performance, productivity, economisation and efficiency.

Reactor’s key features:

  • Concentric salt circulation results equal salt distribution both in radial and axial directions around the catalyst tubes.
  • Central reaction gas inlet with special gas distributor design ensures identical GHSV in each catalyst tube.
  • Operation with the Double Zone Reactor leads to high production flexibility with exceptional high reaction maleic anhydride yield.
  • Gives flexibility to the end-user to generate any MP, HP or HHP steam as required by its process.
  • Operation with high n-butane concentration in the feed gas parallel with high n-C4 conversion and selectivity.
  • Reduced hot-spot temperature and smooth catalyst temperature profile extends the catalyst lifecycle.
  • Significant investment cost reduction.

Europe’s Maleic Anhydride Production Capacity is Expanding by Technobell’s Technology.

Technobell’s Petrochemical Technologies Department has successfully completed the Front-end Engineering Design of a new Maleic Anhydride unit to be operated by the largest Oil and Gas Company in the CEE region.

The new plant with a total maleic anhydride production capacity of 45.000 TPY is planned to be in operation by 2021 and is going to use Technobell’s maleic anhydride technology with the application of Technobell’s proprietary and mandatory equipment like the most advanced Reactor system, Promoter addition system, Thermal oxidizer and State-of-the art hybrid driven compressor packages.

PORTOROŽ, SLOVENIA – After the success of the first Maleic Anhydride conference held in 2016 Technobell decided to organize a second conference also this year. The 2nd Technobell’s conference & Operations Management Training in the Field of Maleic Anhydride Process took place in Portorož from September 18th to September 21st 2018. The event was attended by more than 30 professionals from 11 countries.

The conference was a unique opportunity to receive up-to-date information about the latest developments in the field of Maleic Anhydride production technologies, to learn how to optimize the production process and to establish contacts with the top professionals from the field.

Technobell's Maleic Anhydride conference

Technobell’s Chemical Technologies Department hosted a 3-day Maleic Anhydride Process Conference in Portorož, Slovenia, in September 2016. Over 30 professionals from 15 countries attended the event. Technobell presented its latest developments in the process optimization (Oxidation System, Solvent Recovery and Aqueous Recovery Systems) together with the advantages and mechanical features of its new Double Salt Zone Reactor.

Maleic Anhydride TMP dosing system

TMP dosing system – Extends catalyst life cycle

From Start-of-Run till End-of-Run Maleic Anhydride (MA) catalyst activity is continuously decreasing. To lengthen the life-cycle of catalyst Trimethyl-Phosphate (TMP) must be added to the feed. Important role of TMP is activation procedure of catalyst for achieving of full selectivity of catalyst.

 

General description of the system:

Selectivity/Activity Stabilizer (SAS) dosing system is placed into the reactor section and it is supplied as a package that contains stainless steel tank for TMP storage, dosing pump, control system, safety relief valve, and TMP drum pump with hose for safe and fast unloading of TMP from the drum into the tank. The dosing system is installed into a heated cabinet. A special atomizer/distributor is located at TMP / feed gas line connection point.

TMP is supplied by the TMP dosing pump from TMP tank and is then injected to feed-gas line through special atomizer/distributor. On TMP line a shut-off valve is installed to prevent feed-gas back flowing to TMP system. Dosing pump is equipped with capacity regulation and discharge pressure protection.

 

Main Advantages of TMP dosing system:

  • constant flow and perfect distribution of TMP in reactor;
  • better control of the catalyst operation – stabile catalyst hot-spot;
  • higher yields and plant productivity;
  • longer catalyst lifecycle;
  • system is also capable of dosing Triethyl-Phosphate (TEP).
Double Salt Zone Reactor

Technobell has, based on its improved salt flow circulation, as well as the performance cooling system, designed its own Maleic Anhydride (MA) reactor that is capable of operating up to 2,2 mol% n-butane concentration in the feed gas. Because of its Double Salt Zone Reactor system, a more homogeneous salt pattern, safe Reactor operation and considerable savings of raw material (n-butane) and energy consumption have been achieved.

Now Technobell’s Reactors have reached the ‘State of the Art’ level as far as the internal and external systems for salt circulation is concerned, with the assurance of operating in the safest possible condition, at high feeding loads, with high level manufacturing quality, equipment reliability and extended reactor lifespan.

 

Technobell’s Double Salt Zone Reactor expected performance:

n-C4 concentration in feed gasmol %up to 2,2
Conversionmol %85-90
Selectivitymol %67-72
Reaction Yieldwt. %101-104
Salt temperature°C400-445
Catalyst lifecycleMonths54-66

Note: Both Selectivity and Reaction Yield are based on pure n-butane (100% purity).

 

Technobell’s Double Salt Zone Reactor main characteristics:

  • Perfect gas and salt flow distribution;
  • Bottom salt zone with lower salt temperature;
  • Upper salt zone with higher salt temperature;
  • Lower hot-spot, two catalyst hot-spot peaks;
  • Higher conversion (up to 90 mol%) and high selectivity;
  • Expected Cum. Reaction yield (MA): up to 104 wt%!