(129a) Rdr - Revolution in Ethylene Yield | AIChE

(129a) Rdr - Revolution in Ethylene Yield

Coolbrook is developing a revolutionary Naphtha cracking technology, Roto Dynamic Reactor (“RDR”). The RDR technology provides the following benefits to the olefin production process:

  • Significantly higher ethylene yield
  • Lower energy consumption per ton of ethylene produced
  • Less greenhouse gas emissions per ton of ethylene produced
  • Smaller plant investment costs per ton of ethylene produced

Coolbrook Oy owns three patent portfolios related to the invention. The innovation has been patented in countries that are noteworthy in respect of ethylene production. The RDR technology originates from the Russian space program and its rocket motor hydrodynamics research and development.

The objective of our development phase is to test and demonstrate the new RDR technology at a major petrochemical plant with Dow Chemical Company. This development work will be undertaken during 2017 - 2018. It is expected that the technology will be ready for full scale commercial pilot in 2019.

We are currently finalizing the mechanical design of our pilot plant. Next we will start making material selections an manufacturing the reactor. By the time of EPC spring conference we are preapring to do air tests and later 2018 we shall make tests with hydrogen. So our focus on presentation is to inform audience the basic technology of RDR and results from our first test that was done earlier:

Product

Designer, type of reactor, cracked gas outlet temperature (ºC)

ABB Lummus

Technip

Coolbrook RDR

SRT-VI

GK-4

GK-5

Model rotary blade reactor

862

848

835

882 ºC

891 ºC

902 ºC

Ethylene

30.30

29.03

30.50

42.06

42.64

43.32

Propylene

13.90

11.59

15.50

13.53

13.10

12.34

Sum

44.20

40.62

46.00

55.59

55.74

55.66

Technology Overview

The RDR cracks feedstocks differently than traditional thermal furnaces. In a traditional furnace cracker, Naphtha or Ethane or other feedstocks, breaks down under intense heat. In contrast, the RDR uses a high-speed spinning rotor to separate the fluids under intense kinetic energy.

The RDR innovation has unique features for optimizing and balancing the chemical reaction and efficient process control for optimizing selectivity and conversion. The controllability of the reactor and the process provides maximum yield of the most valuable products and thus increases the operational flexibility of an ethylene plant.

The RDR technology can be installed in existing as well as green field petrochemical plants. The cost of installing RDR technology in new plants is estimated to be slightly below or similar to the cost of installing existing cracking technology. RDR technology can be installed at plants using Offsite Modular Construction model which results in lower installation costs and quicker installation process.

Feed composition, reactor gas temperature, steam ratio and residence time are the main parameters affecting the product distribution in cracking of hydrocarbons. The biggest benefit of RDR technology is short residence time (time it takes to heat gases to desired temperature) and high temperature when the energy addition process is accompanied simultaneously with an intensive mixing process. This significantly increases the controllability of the chemical reactions at low energy cost. Other benefits of the RDR-technology include a significantly lower setup time and noticeably better process- and output control.

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Individuals

2018 Spring Meeting and 14th Global Congress on Process Safety
AIChE Pro Members $150.00
Employees of CCPS Member Companies $150.00
AIChE Graduate Student Members Free
AIChE Undergraduate Student Members Free
AIChE Explorer Members $225.00
Non-Members $225.00
The 30th Ethylene Producers' Conference only
AIChE Pro Members $100.00
Fuels and Petrochemicals Division Members Free
AIChE Graduate Student Members Free
AIChE Undergraduate Student Members Free
AIChE Explorer Members $150.00
Non-Members $150.00