ALVIGO Group of Companies offers state-of-the-art technology for acetylene production, unit capacities of plants, designed during period 2006 – 2016, are from 20 to 60 ktpy. Process parameters, equipment/instrumentation implementation and automation system have been developed considering modern requirements for energy efficiency and process safety of acetylene plant.

According to our latest developments, acetylene plant up to 50 thousand tons per year contains only one concentration line. The capacity of one pyrolysis line is increased to 11.5 thousand tons. This significantly reduces the operating costs, equipment number and increases the reliability and safety of the plant. At the same time, the cost of 1 acetylene ton is reduced for 30-50 dollars approximately.

To ensure safe conditions, the process of pyrolysis gases and raw acetylene compression, as well as acetylene concentration process is conducted under pressure, safe for the explosive decomposition of acetylene, so as to avoid critical conditions that can cause an explosion.

Selective solvent N-methylpyrrolidone is used for acetylene recovery from pyrolysis gases. It is used double-loop system of solvent circulation in concentration section, allows reducing of polymers deposit in equipment.

Consumption of main raw materials per 1 ton of acetylene

Raw Material Units Consumption per 1 ton of product
Natural gas, total nm3 6250
Oxygen (in terms of 100%) nm3 3700

Quality of finished product

Acetylene (С2Н2) mol % 98.8 (min)
Higher homologues of acetylene mol % 0.8 (max)
Including diacetylene mol % 0.003 (max)
Carbon dioxide (СО2) mol % 0.2 (max)
Inert gases (N2 + O2) mol % 0.3 (max)

Automated control system and plant process control within the prescribed limits is provided for process control of acetylene plant, safety measures of operating personnel, assurance of safe operation for process equipment and environmental safety during acetylene production.

Technologies

We have the knowledge and experience in production processes and technologies.

Ammonia

We have developed promising technologies for the production of ammonia.

Methanol

Methanol is a traditional subject of the ALVIGO GC.

Nitric acid

We offer 2 variants of the technological scheme for the synthesis of non-concentrated HNO3.

Acetic acid

We offer advanced technology for the production of acetic acid by carbonylation of methanol with carbon monoxide.

Adipic acid

We have significantly changed the schemes for obtaining adipic acid, which allowed us to raise the technical level of production.