Chemistry

/Chemistry
Chemistry 2017-05-29T08:01:45+00:00
pilot1pilot2pilot3

Company: Dow Chemical Ibérica, S.L

Sector: Chemical

Product: Olefins

Production Capacity: 75 kta ethylene ; 305 kta propylene

Description

Typical process layout comprises a reaction section, a multi-step purification section (separation of target product from solvent, feedstock excess and by-products) and a solvent recycling section.

The reaction is carried out in batch mode involving an organic solvent, the separation section as well as the solvent recycling section comprises several thermal separation stages (distillation columns, special evaporator types).

key current parameters monitored and controlled: load, feedstock and product flows, temperatures, pressures, energy flows for large consumers

The process is controlled with a state-of-the-art DCS system that feeds all relevant data incl. historians into a real-time Process-Information-System (OSIsoft PI).

Main energy carrier: steam, natural gas, electricity

Include potential improvement acting over the monitoring and control of the process: 10% relative reduction in energy consumption is expected due to the existing energy management system STRUCTese (incl. extensive monitoring), no further savings foreseeable

Challenges and expected improvements: as part of the C.I.P. Climate Check a systematic screening of energy efficiency improvements has been recently performed and all feasible improvement measures are currently being implemented.

Any suggested improvement measure prior to implementation has to be subjected to the standard investment appraisal workflow of the C.I.P. group
Current product specifications and standards have to be fulfilled. Some of the specs relate to complex properties like viscosity, colour and shelf life. Some specifications, such as colours, cannot be described with a relation between process parameters like pressures, temperatures or concentrations.

Trace components are decisive for the product specifications, thus their formation should be controlled.

All processes involve highly hazardous chemicals (toxic, highly flammable, aggressive). All identified improvement measures will have to undergo a thorough safety review before implementation.
Main energy carrier: steam, natural gas, electricity

Include potential improvement acting over the monitoring and control of the process: 10% relative reduction in energy consumption is expected due to the existing energy management system STRUCTese (incl. extensive monitoring), no further savings foreseeable

Challenges and expected improvements: as part of the C.I.P. Climate Check a systematic screening of energy efficiency improvements has been recently performed and all feasible improvement measures are currently being implemented.

 

schema_Chemical-

Any suggested improvement measure prior to implementation has to be subjected to the standard investment appraisal workflow of the C.I.P. group

 

schema_Chemical-

Current product specifications and standards have to be fulfilled. Some of the specs relate to complex properties like viscosity, colour and shelf life. Some specifications, such as colours, cannot be described with a relation between process parameters like pressures, temperatures or concentrations.

Trace components are decisive for the product specifications, thus their formation should be controlled.

 

schema_Chemical-

All processes involve highly hazardous chemicals (toxic, highly flammable, aggressive). All identified improvement measures will have to undergo a thorough safety review before implementation.
schema_Chemical-

What is Cracking?

A cracker is a chemical complex in which gaseous and/or liquid feedstocks are converted, primarily into ethylene.

To explain its functioning, Dow Chemical Ibérica, project partner of TOP-REF, has elaborated a video that includes a description of its main parts and phases, and how it is integrated into an ethylene production plant.