Nitrogen+Syngas
The magazine for the nitrogen and syngas industries

Latest issue:
September/October 2017

• Plant Manager+ Problem No. 44: Rise in HP CO2 stripper outlet temperature
  In the high-pressure CO2 stripper of a urea plant, which is essentially a shell-and-tube heat exchanger, the incoming carbon dioxide feed flows counter-current to the urea solution leaving the reactor. On the shell side, the high-pressure stripper is heated with steam. The off-gas of the high-pressure stripper, containing the feed carbon dioxide along with additional carbon dioxide and ammonia from the dissociated carbamate, is then fed into the carbamate condenser or pool reactor. This round table discussion is about the high-pressure CO2 stripper and how to solve the problem of a high temperature in the bottom of the stripper.

  Full article: 1,559 words | add to basket (£25)

• Trans-Pacific methanol
  Chinese-backed Northwest Innovations Works (NWIW) is trying to build two huge methanol complexes on the Columbia River in the US Pacific northewest to make methanol from cheap US shale gas and ship it to China. Is this scheme practical or over-ambitious in a lower oil price environment?

  Full article: 2,119 words | add to basket (£25)

• Nitric acid technology trends
  L. Nielandt, J. Mathiak and M. Groves of thyssenkrupp Industrial Solutions AG provide a brief history of nitric acid production technology and discuss current challenges to reduce plant emissions. Recent abatement achievements during start-up and partial load are presented.

  Full article: 1,682 words | add to basket (£25)

• Oxyboost Technology increasing efficiency
  A new concept for improving the absorption efficiency of nitric acid plants has been developed by Messer Group. This concept uses pure oxygen for the oxidation of nitrous acid (HNO2) and nitrous gases mainly in the liquid phase. Benefits include: reduced NOx emissions, less down time, up to 10% additional production, low investment costs and less ammonia needed for DeNOx.

  Full article: 1,307 words | add to basket (£25)

• High energy recovery with low emissions
  Stamicarbon is launching its renewed dual pressure nitric acid technology, developed for highest energy recovery with low emissions in order to accommodate an increased customer need for lowest total cost of ownership of nitric acid plants.

  Full article: 1,441 words | add to basket (£25)

• Boosting nitric acid capacity
  Jean-François Granger of Casale discusses novel solutions to boost the capacity of nitric acid plants without modifications to the turbot set machine.

  Full article: 853 words | add to basket (£25)

• Environmental improvements in UAN production
  Elisa Puci and Joey Dobrée of Stamicarbon describe ways of integrating emission treatment technologies in urea and UAN plants.

  Full article: 1,689 words | add to basket (£25)

• The future size of methanol plants
  More and more, the size of a methanol plant is determined by construction considerations (modularisation, shipping limits on size or weight due to tunnels and bridges) or product sales (how often will a 50,000-tonne vessel need to be loaded to export your weekly production rate?) or availability of financing. Even though most projects are limited by such considerations, not all of them are. Clients almost always start with the question: "How big can you go?". In this article Simon Early of Johnson Matthey, considers the answer to that question.

  Full article: 3,387 words | add to basket (£25)

• Methanol plants reach 7, 000 tonnes per day
  The world's largest methanol plant currently stands at 7,000 t/d. In this article we report on the latest methanol technology and design concepts for large scale methanol plants from Casale, thyssenkrupp Industrial Solutions and Topsoe.

  Full article: 2,194 words | add to basket (£25)

• Higher single train ammonia capacity
  The trend to higher ammonia plant capacities continues. In this article, thyssenkrupp presents a concept for a 4,700 t/d single train ammonia plant based on proven technology and Casale presents its concept for a single train ammonia process suitable for capacities of up to 7,000 t/d.

  Full article: 3,669 words | add to basket (£25)