For ammonia nitrate plants АС-72, АС-72М, АС-67 ALVIGO Group offers the development and supply of full set of upgraded process equipment complying with current normative documents for manufacturing and operating with higher capacity.
At present the development of improved vessel for using the neutralization heat with higher capacity for ammonia nitrate plant АС-72М is in progress. Upgraded vessel is characterized by:
- higher capacity;
- increased reaction part of device;
- more compact separation part, completed with modern separating elements.
Design of the vessel consists of materials, resistant to influence of nitric acid and chemical reactions: stainless steel 03Х18Н11, titanium ВТ1-0 and steel 12Х18Н10Т. In addition to engineering design, JSC GIAP offers the development of detailed construction documentation, fabrication, supply and designer supervision of vessel fabrication.
To ensure the optimal performance of entire unit with increased capacity, it is planned to develop new nitric acid and ammonia heaters, combined with increases performance, preliminary neutralizers and cleaning srubber-washer to achieve emission reduction. The necessary improving of heaters, tanks, drums and other equipment construction is performed by our specialists.
The experience of ALVIGO Group specialists makes it possible to provide the entire complex of process and engineering, organizational and managerial services for manufacturing of high-tech equipment, including the one, made from titanium or with titanium elements.
For ammonia plants АM-70, АМ-76 и АМ -80 ALVIGO Group suggests development and supply of full set of advanced process equipment in accordance with current normative documents for manufacturing and operating with higher capacity. Also for process units we offer the separate vessels and apparatus, made by ТЕС (Japan), Kellogg (USA) and CHEMICO (USA).
Structural and material design of equipment of all units is accepted according to the corresponding design parameters of the processes carried out in it in accordance with pressures, temperatures, and aggressiveness of the circulating media. In accordance with the requirements of the standards, depending on the parameters and operating conditions of the equipment, heat-resistant alloys, high alloy corrosion-resistant steels, chromium-molybdenum, alloy or low-alloy materials meeting these requirements are used for its production. In necessary cases, additional lining of the metal with heat-resistant concrete is provided.
One of the latest developments is the methane converter with new construction of burner-mixer for ammonia plant, which is offered to supply. The installed mixer is characterized by:
- lower hydraulic resistance;
- providing shortened flame and more uniform temperature field distribution, as a result of improved mixing;
- reducing the thermal and aerodynamic influence of stream for facing beds of catalyst and covering materials;
- increasing the conversion rate and catalyst life; it provides the stable condition of flame burning;
- providing the required gas mixing before catalyst bed entering, due to absence of counterflow of hot gas towards the parts of burner, flame centre of which is located along the central axis, which leads to the active circulation in the combustion chamber area.
The current development in the field of heat exchanging equipment is the improved HP heat exchanges of synthesis section: feed water heaters, liquid ammonia evaporators, built-in heat exchangers of synthesis columns and waste heat boilers of steam reforming process, manufactured by current norms and standards. This equipment is proposed for supply. It is possible to manufacture any other improved equipment or change the existing equipment of ammonia plants for similar one on individual project.
The experience of ALVIGO Group specialists makes it possible to provide the entire complex of process and engineering, organizational and managerial services for manufacturing of high-tech equipment, including, as required for high-quality manufacturing of the above-mentioned vessels, ensuring the interaction of the most experienced specialists in welding and heat treatment of iron-nickel alloys, chromium-molybdenum steels, performing welding operations, expanding of pipes to the full thickness of tube sheet and performing heat resistant lining.