Pressure purification of process condensate with process steam

Offer:

• license and the know-how
• basic and complete technological documentation
• supervision over the plant’s erection and start-up
• delivery of equipment, piping, fittings and control and measurement instruments

The process description:

• production of synthesis gases in the reforming processes and from gas obtained in the carbon gasification process
• Economical results:
  • decrease of temperature of primary reformer temperature by about 60 °C,
  • ammonia and methanol recovery,
  • reducing the use of demi water by about 1,25 t/t NH₃.
• Waste from degassing the condensate do not pollute the environment.

The technological concept of pressure stripping is based on the use of heated steam, directed to steam reforming process of natural gas under the pressure of about 4 MPa. The degassing products along with the saturated steam return to the process steam stream with which they go to the primary reformer, where they decompose to create H₂ ,CO i N₂. The steam stream leaving the stripping column along with volatile contaminants, redirected from process condensate, is directed directly to the process gas stream discharged to the reformer. This allows to avoid significant heat losses connected with cooling of the steam stream leaving the stripper in case of low-pressure process and to avoid contamination of the environment with condensate degassing products. The pure condensate, containing trace content of ammonia and methanol, feeds boilers of medium- and low-pressure and its excess returns to demineralization station, where it is used as feedstock for producing demi-water feeding high-pressure boilers.

References

Anwil S.A.	Nitrogenmuvek Zrt.Petfurdo/Hungary
Grupa Azoty Zakłady Azotowe (Nitrogen Plant Grupa Azoty) “Kędzierzyn” S.A.

Synthesis gas drying

Offer:

• license and know-how
• basic and complete technological documentation
• supervision over the plant’s erection and start-up
• delivery of equipment, piping, fittings and control and measurement instruments

The process description:

• Original technology of adsorption synthesis gas drying on molecular sieves with the use of TSA process.
• Economical results:
  • reducing ratio of natural gas consumption by 20 Nm³/t NH₃,
  • improvement of product quality (liquid ammonia).

The synthesis gas after the methanation flows through one of two drying columns filled with molecular sieves operating interchangeably in the TSA (Temperature Swing Adsorption) cycle. In contact with the adsorbent, the final gas drying is carried out leading to the H₂O < 1 ppmv content of steam and to the removal of the remaining CO₂ to the level of < 1 ppmv. The raw synthesis gas without traces of water steam and CO₂ being a poison for ammonia synthesis catalyst, is mixed with circulation gas stream directly before the inlet to ammonia synthesis converter. As a result, NH₃ concentration is reduced in the inlet gas stream and the ratio of synthesis gas conversion during is increased during a single gas pass through the catalyst bed. This causes the reduction in gas circulation in the synthesis loop and allows for the decrease of the synthesis pressure. The final result of the technological modification made is the reduction in compressing energy, synthesis gas circulation and decrease in heat losses in the cooling system.

Patents

PL 191 540

References

Anwil S.A. (line A)
Anwil S.A. (line B)

Prizes and awards

2006 - Silver medal – International Invention Exhibition GENIUS, Budapest

Purity improvement of carbon dioxide prepared in Benfield/Carsol unit

Offer:

• license and know-how
• basic and complete technological documentation
• supervision over the plant’s erection and start-up
• delivery of equipment, piping, fittings and control and measurement instruments

The process description:

• The process ensures the improvement of CO₂purity used for the production of urea, to 99,9% vol.
• Economical effects:
  • increase of pure CO₂ stream for urea production by 20 ÷ 25%,
  • decrease of CO₂ compressing energy consumption in the urea plant by about 5 ÷ 8%,
  • increase in urea plant capacity by about 5%,
• Elimination of the explosion danger in the urea synthesis unit.

Saturated potassium carbonate solution leaving the absorber and containing the average of 0,7 – 0,8 % vol. of hydrogen and other synthesis gas components (nitrogen, methane, carbon oxide), flows through, turbine – separator a placed behind an expansion where the and separation of the combustible gas is carried out before introducing the solution to the regenerator. As a result of an earlier separation of the inert gases, the CO₂ stream obtained from the top of the regenerator contains 99,9 % of CO₂and only traces of contaminants and thus it can be entirely used for urea production without the necessity of thorough cleaning. A separator operating at 4 - 6 bars enables selective emission of combustible gases from the solution without noticeable CO₂losses which, in turn, allows for the increase of CO₂ stream directed to urea production.

Patents

PL 177 337, PL 208 158

References

Anwil S.A.	OAO Grodno-Azot / Bialorus
Grupa Azoty Zakłady Chemiczne (Chemical Plant Grupa Azoty) „Police” S.A.	SKW Piesteritz / Germany
	OAO Akron, W. Nowgorod / Russia
	OAO NAK Azot, Nowomoskowsk / Russia
	Dniproazot, Dniprodzierżyńsk / Ukraine
	Stirol, Gorłowka / Ukraine
	Nitrogenmüvek Zrt, Petfürdo / Hungary

Prizes and awards

2011 - Silver medal – International Technological Innovation and Invention Exhibition, ARCHIMEDES, Moscow

2008 - Bronze medal –Belgian and International Trade Fair for Technological Innovation BRUSSELS EUREKA!, Brussels

2007 - Silver medal – Fair of Industrial Technology, Science and Innovation “ Technicom – Innovation”, Gdańsk

Modernization of the unit for carbon dioxide removal from synthesis gas with activated potassium carbonate solution

Offer:

• license and know-how
• basic and complete technological documentation
• supervision over the plant’s erection and start-up
• delivery of equipment, piping, fittings and control and measurement instruments

The process description:

• To be used in modernization of units for CO₂removal from gas, based on Benfield or Carsol technology.
• Economical results:
  • Regeneration of hot solution heat after the process of regeneration allows for:
    • increase of production capacity of ammonia plant by 15 – 20%,
    • decrease of heat use for regeneration, from 1200 to 880 kcal/1000 Nm³ CO₂,
    • ratio decrease of natural gas use by about 25 Nm³/t NH₃.

A regenerated potassium carbonate solution leaving the regenerator, flows through the expansion flash tank where a rapid evaporation of hot solution takes place as a result of lower pressure created by steam injector. Pressure-less steam generated in the expander is pressed with the injector under the bottom layer of the regenerator load, which improves the efficiency of the solution regeneration process. The result of releasing the steam is cooling the solution in the flash tank. This allows the solution air cooler to be turned off. Modernization ensures a decrease of natural gas consumption ratio and the intensification of the ammonia plant.

Patents

Patent application PL 387 590

References

Anwil S.A.	OAO Grodno-Azot / Bialorus
Grupa Azoty Zakłady Azotowe (Nitrogen Plant Grupa Azoty) „Puławy” S.A.	OAO NAK-Azot, Nowomoskowsk / Russia
	OAO Minudobrenija, Perm / Russia
	Nitrogenmüvek Zrt, Petfürdo /Hungary

Prizes and awards

2011 - Silver medal – International Technological Innovation and Invention Exhibition ARCHIMEDES, Moscow

2009 - Gold medal – Belgian and International Trade Fair for Technological Innovation BRUSSELS EUREKA!, Brussels

2009 - Silver medal – International Invention Exhibition IWIS, Warsaw

2009 - Main Prize of European Inventors Association Great Prize Leonardo da Vinci,, Warsaw

Natural gas saturation

Offer:

• license and know-how
• basic and complete technological documentation
• supervision over the plant’s erection and start-up
• delivery of equipment, piping, fittings and control and measurement instruments

The process description:

• To be implemented in ammonia, methanol and related synthesis plants as well as hydrogen plants.
• Economical results:
  • decrease of natural gas consumption by about 12 Nm³/t NH₃ (about 0,42 GJ/t NH₃),
  • reduction in demi-water consumption in high-pressure steam system by about 0,4 t/t NH₃.
• Project to be applied in ammonia, methanol, related syntheses and hydrogen plants.

Natural gas directed to the reforming process flows in counter-flow direction to the hot condensate stream which sprays the saturation column. The process condensate is heated in a heater placed in the convection section of flue gases. The natural gas is saturated with water steam evaporated from the condensate stream. The direct result achieved by the use of saturation is the reduction in the consumption of technological steam which is taken from the stream of overheated steam produced in the existing steam boilers by means of combusting fuel gas. That causes a decrease in the consumption of natural gas directed for reformer heating and reduction in process energy consumption.

References

Nitrogenmüvek Zrt, Petfürdo /Hungary