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Ammonia production using an integrated intensification approach

A production method and a synthesis gas technology, applied in the field of ammonia production, can solve problems such as inefficiency, and achieve the effect of improving ammonia production efficiency, stabilizing mechanical properties and thermal adsorption machinery

Inactive Publication Date: 2016-09-14
NEWCASTLE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these ammonia production methods involve repeated pressurization-depressurization, heating-cooling, and adsorption-desorption stages, making them energy-intensive and inefficient processes and making natural gas the most economical source of hydrogen for ammonia production

Method used

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  • Ammonia production using an integrated intensification approach
  • Ammonia production using an integrated intensification approach
  • Ammonia production using an integrated intensification approach

Examples

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example

[0133] In the catalytic plasma synthesis of ammonia and its recovery, the following steps are taken: a) preparation of solid acid and water absorbent, which are ultimately used as synthetic rhizosphere in soil to promote plant growth; b) preparation of grading of pores in the reactor and high surface area structured catalysts; c) use of high dielectric constant catalysts in plasma reactors where at least one electrode is in contact with the catalyst; d) configuration of the plasma reactors so that the ammonia yield Maximize and minimize energy consumption. The following examples are provided to illustrate these steps.

example A

[0134] Example A. Preparation of PolyHIPE Polymer for Ammonia and Water Adsorption and Formation of Synthetic Rhizosphere (SRS) Media and Slow Release Fertilizer Substances for Preparation of Synthetic Rhizosphere (SRS) Media Polymers

[0135] All chemicals are reagent grade. Monomer (styrene), crosslinker (divinylbenzene, DVB), polymerization initiator (potassium persulfate), sulfonating agent (0.97 g sulfuric acid / g solution) were all supplied by Aldrich.

[0136] Preparation of synthetic rhizosphere media polymers

[0137] SRS media polymers are nanostructured cross-linked hydrophilic elastic ionic microporous materials, generally referred to as PolyHIPE polymers (PHP), which are passed through high internal phase emulsions as disclosed in U.S. Patent 7 820 729 by Akai et al. (HIPE) polymerization and subsequent functionalization route to prepare. The preparation of functionalized PHP has 3 stages: 1) stable HIPE formation; 2) polymerization; and 3) functionalization.

...

example B

[0147] Example B. Preparation of Nanostructured Microporous Supported Catalysts

[0148] The prior art for the preparation of supported metal catalysts uses particulate porous supports such as oxides of aluminum (Al 2 o 3 ; aluminum oxide) or silicon oxide (SiO 2 ; silica). Aqueous solutions of metal catalyst precursor salts (e.g. nickel, cobalt, iron, ruthenium nitrates) are used to impregnate the support and the resulting system is heat treated at high temperature (typically 600°C) to decompose the catalyst precursor salts to obtain metal oxides , which are then reduced at similar temperatures to reduce metal oxides to active metal catalysts.

[0149] We have found that instead of using porous solid catalyst supports, high surface area supported catalysts can be obtained by using stable nanoscale support particles dispersed in water that also contain catalyst precursor salts (such as Ni(NO 3 ) 2 ), because the nitrates of the catalytic metals are highly soluble in water...

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Abstract

The present invention discloses an ammonia production method. The method utilizes the gasification of biomass waste and the like to produce syngas using an integrated system including the use of nitrogen-enriched air and porous coated catalysts to produce ammonia in a plasma reactor. Ammonia is eventually recovered using sulfonated PolyHIPE polymers that can be used as fertilizers after neutralization.

Description

technical field [0001] The present invention relates to a method of producing ammonia and in particular, but not exclusively, to a method of gasifying biomass to produce ammonia in an integrated system. Background technique [0002] The most common method of large-scale ammonia production utilizes natural gas as a source of hydrogen and energy for conversion. Gasification of biomass and similar fuel sources can also be used to produce hydrogen, and this can similarly be used for ammonia production. However, these ammonia production methods involve repeated pressurization-depressurization, heating-cooling and adsorption-desorption stages, making them energy intensive and inefficient processes and making natural gas the most economical source of hydrogen for ammonia production. [0003] Preferred embodiments of the present invention seek to overcome the above-mentioned disadvantages of the prior art. Contents of the invention [0004] According to one aspect of the present...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/02C01C1/04C10J3/00
CPCC01B3/025C01B2203/04C01B2203/0405C01B2203/047C01B2203/0475C01B2203/048C01B2203/0495C01B2203/068C01C1/0494C10J3/22C10J3/30C10J3/42C10J2300/0916C10J2300/0956C10J2300/0959C10J2300/1612C10J2300/1668C10J2300/1678C10J2300/1815C10J2200/158C10J2300/0969C10J2200/156Y02P20/145Y02P20/52C01C1/0405Y10T428/2991
Inventor 阿卡伊,加利普
Owner NEWCASTLE UNIV
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