ColdGasEngineering

ХолодГазИнжиниринг

Krypton and Xenon
Manufacturing

URKrK-25 Refinery processing unit

Krypton and Xenon production at CJSC ColdGasEngineering is based on the URKrK-25 refinery processing unit designed and manufactured by the company.

The main mode of the processing unit is designed for the simultaneous production of high-purity krypton and xenon from a krypton-xenon mixture (GOST 10218-77) obtained at air separation plants of metallurgical industries.

The mixture enters in steel or aluminum cylinders under pressure.

GOST (Russian National Standart)

GOST 10218-77 establishes the following requirements for the mixture in terms of the content of components:

  • the volume fraction of krypton (with xenon), not less than 99.50%;
  • the volume fraction of xenon, not less than 5.00%;
  • the volume fraction of nitrogen, not more than – 0.40%;
  • the volume fraction of methane, no more than 0.01%;
  • the volume fraction of carbon dioxide, not more than – 0.01%;
  • the volume fraction of water vapor, not more than – 0.01%

KRYPTON and XENON correspond to 6.0 grade

All xenon and krypton produced by us correspond to 6.0 grade (99.9999%) in purity.

By special order, we produce products of 7.0 grade (99.99999%), for individual impurity components reaching ppb units.

Krypton and xenon are pumped by membrane compressors into steel or aluminum cylinders with a capacity of 1 L to 50 L.

Maximum injection pressure up to 200 kgf/cm2.

All xenon and krypton produced by us correspond to 6.0 grade (99.9999%) in purity.
By special order, we produce products of 7.0 grade (99.99999%), for individual impurity components reaching ppb units.
Krypton and xenon are pumped by membrane compressors into steel or aluminum cylinders with a capacity of 1 L to 50 L.
Maximum injection pressure up to 200 kgf/cm2.

The Capacity of the Refinery processing unit

Productivity of the processing unit (in the main mode) is up to 25 m3 processed mixture per hour *
* flow rate is based on “normal” conditions: pressure 101.325 kPa (760 mmHg) and temperature 293.16 K (20 °C).
The technological scheme of the processing unit allows you to have an arbitrarily large resource of work.
Real annual plant capacity: krypton – 100 000 m3/year; xenon – 10 000 m3/year.

Configuration of the Refinery processing unit

  1. Structurally, the processing unit is a set of machinery, compressors, and ancillary equipment connected by pipelines with the necessary fittings.
    Part of the equipment operating at low temperatures is placed in a casing with thermal insulation and forms a rectification unit.
    Other machinery and equipment are located separately according to the project of the manufacturing workshop.
  2. The system of control and management of the processing unit provides the possibility of monitoring the technological process, control of units, and remotely controlled fittings.
  3. The gas testing laboratory provides:
  • incoming analysis of raw materials (krypton-xenon mixture, etc.) supplied for processing;
  • technological analysis from the processing unit points;
  • certification analysis of manufactured products – krypton and xenon (according to the table listed below).

Operation of the refinery processing unit

  1. The production of high-purity krypton and xenon from a krypton-xenon mixture is carried out by the method of low-temperature rectification.
    In the process of rectification, the target components (krypton and xenon) are separated and purified from low-boiling impurities (nitrogen, oxygen, argon, etc.).
    Purification of the mixture from hydrocarbons (methane, ethane, etc.), fluorine-containing compounds (tetrafluoromethane, sulfur hexafluoride, hexafluoroethane), carbon dioxide, and moisture is carried out separately by chemical and adsorption methods in the purification section of the processing unit.
    Structurally, the purification section consists of two identical technological lines, installed parallel to each other.
    This design allows you to have an arbitrarily long service life of the purification section, since during the operation of one line, the other goes through the preparation stage. Then their switching follows. Filters with a filtration depth of 60 microns are installed at the outlet of the purification section.
  2. Liquid nitrogen supplied from an external tank is used as a refrigerant in the purification section and gasifiers.
  3. The feed of the processed mixture is carried out through discharge ramps. Each of the ramps has the ability to connect 10 cylinders. Ramps work alternately or together.
    The mixture pressure is reduced by a pressure reducer.
  4. The products (krypton or xenon) outlet is carried out by membrane compressors into krypton and xenon filling ramps. Each of the ramps has the ability to connect 5 cylinders. Ramps work alternately or together. Before the supply for the suction of the compressor, the liquid products discharged from the rectification unit pass through the evaporator, where they evaporate and are heated to ambient temperature.

Process design

PRODUCTS: Krypton and Xenon

Krypton and Xenon
Manufacturing

URKrK-25 Refinery processing unit

Krypton and Xenon production at CJSC ColdGasEngineering is based on the URKrK-25 refinery processing unit designed and manufactured by the company.
The main mode of the processing unit is designed for the simultaneous production of high-purity krypton and xenon from a krypton-xenon mixture (GOST 10218-77) obtained at air separation plants of metallurgical industries.
The mixture enters in steel or aluminum cylinders under pressure.

GOST (Russian National Standart)

GOST 10218-77 establishes the following requirements for the mixture in terms of the content of components:

  • the volume fraction of krypton (with xenon), not less than 99.50%;
  • the volume fraction of xenon, not less than 5.00%;
  • the volume fraction of nitrogen, not more than – 0.40%;
  • the volume fraction of methane, no more than 0.01%;
  • the volume fraction of carbon dioxide, not more than – 0.01%;
  • the volume fraction of water vapor, not more than – 0.01%

KRYPTON and XENON correspond to 6.0 grade

All xenon and krypton produced by us correspond to 6.0 grade (99.9999%) in purity.
By special order, we produce products of 7.0 grade (99.99999%), for individual impurity components reaching ppb units.
Krypton and xenon are pumped by membrane compressors into steel or aluminum cylinders with a capacity of 1 L to 50 L.
Maximum injection pressure up to 200 kgf/cm2.

The Capacity of the Refinery processing unit

Productivity of the processing unit (in the main mode) is up to 25 m3 processed mixture per hour *
* flow rate is based on “normal” conditions: pressure 101.325 kPa (760 mmHg) and temperature 293.16 K (20 °C).
The technological scheme of the processing unit allows you to have an arbitrarily large resource of work.
Real annual plant capacity: krypton – 100 000 m3/year; xenon – 10 000 m3/year.

Configuration of the Refinery processing unit

  1. Structurally, the processing unit is a set of machinery, compressors, and ancillary equipment connected by pipelines with the necessary fittings.
    Part of the equipment operating at low temperatures is placed in a casing with thermal insulation and forms a rectification unit.
    Other machinery and equipment are located separately according to the project of the manufacturing workshop.
  2. The system of control and management of the processing unit provides the possibility of monitoring the technological process, control of units, and remotely controlled fittings.
  3. The gas testing laboratory provides:
  • incoming analysis of raw materials (krypton-xenon mixture, etc.) supplied for processing;
  • technological analysis from the processing unit points;
  • certification analysis of manufactured products – krypton and xenon (according to the table listed below).

Operation of the refinery processing unit

  1. The production of high-purity krypton and xenon from a krypton-xenon mixture is carried out by the method of low-temperature rectification.
    In the process of rectification, the target components (krypton and xenon) are separated and purified from low-boiling impurities (nitrogen, oxygen, argon, etc.).
    Purification of the mixture from hydrocarbons (methane, ethane, etc.), fluorine-containing compounds (tetrafluoromethane, sulfur hexafluoride, hexafluoroethane), carbon dioxide, and moisture is carried out separately by chemical and adsorption methods in the purification section of the processing unit.
    Structurally, the purification section consists of two identical technological lines, installed parallel to each other.
    This design allows you to have an arbitrarily long service life of the purification section, since during the operation of one line, the other goes through the preparation stage. Then their switching follows. Filters with a filtration depth of 60 microns are installed at the outlet of the purification section.
  2. Liquid nitrogen supplied from an external tank is used as a refrigerant in the purification section and gasifiers.
  3. The feed of the processed mixture is carried out through discharge ramps. Each of the ramps has the ability to connect 10 cylinders. Ramps work alternately or together.
    The mixture pressure is reduced by a pressure reducer.
  4. The products (krypton or xenon) outlet is carried out by membrane compressors into krypton and xenon filling ramps. Each of the ramps has the ability to connect 5 cylinders. Ramps work alternately or together. Before the supply for the suction of the compressor, the liquid products discharged from the rectification unit pass through the evaporator, where they evaporate and are heated to ambient temperature.

Process design

PRODUCTS:
Krypton and Xenon

CJSC “ColdGasEngineering”

127410, Russia, Moscow,
Altufevskoe highway, 79A, building 3

E-mail: Info@CGE-gas.ru

Krypton and Xenon Production

Helium Production

Neon Production

Products

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