SNG system

AX5 SNG Vaporizer / Propane-Air Mixer

  • Electric
  • Hot water
  • Steam


  • Electric Waterbath type
  • Capacity : 200 – 750 kg/h
  • External Control Panel
  • Float Valve safety feature (200 / 300 / 500 kg/h models)
    *Our Patented Technology
  • Thermo Valve safety feature (EVM-750AX5)
  • Explosion-proof : Flameproof / Intrinsic safety
  • Ex d ia II B T4 Gb / Class-1, Division-1

  • SNG (Synthetic Natural Gas) Mixer supplies Air / LPG mixed gas as back-up for Natural Gas.
  • Standard model / High pressure model available.

Introduction of Kagla’s SNG system
(SNG vaporizer / Propane-Air mixer)

Necessity of back up system for Natural Gas

Securing a backup line is very important for any energy supply.
For example, in the manufacturing industry, if the energy supply is cut off, the production line will be stopped, causing serious damage to corporate activities.
A backup generator is essential to prepare for an unexpected power outage.
In the case of LPG that you store in the tanks or cylinders at your own facility, if you make a bypass line for natural vaporization when installing the vaporizer, the supply will not stop.
Now what if the supply of piped natural gas is cut off?

Solution for Natural Gas supply problem

SNG Vaporiser / mixer / blender is a backup system that protects your business in the event of a natural gas supply problem.
Since the calorific value of natural gas is much lower than that of LPG, ordinary combustion equipment for natural gas cannot be operated with LPG.
The SNG vaporizer solves this problem and makes it possible to operate natural gas equipment using LPG-AIR mixed gas as an alternative fuel.
SNG (Synthetic Natural Gas) is a mixed gas of LPG and air whose calorific value is adjusted very close to that of natural gas, and it substitutes natural gas in case of supply problem.
This product is compactly packaged on a skid that combines an LPG vaporizer with an air mixing device.
By diluting LPG, a mixed gas (SNG) close to the calorific value of natural gas is generated and used as an alternative fuel for natural gas equipment.
KAGLA’s SNG vaporizer uses a Venturi type mixing structure that takes in air only when LPG vapor is injected. As this mechanism does not generate mixed gas in the explosion range, it is excellent in safety.
It is often used as a backup facility in areas where the natural gas supply is unstable. Even if a problem occurs in the supply of natural gas, the operation is automatically switched to SNG vaporizer by sensing the pressure drop. And thus you can continue operation without stopping the equipment by consuming SNG.

There are various capacity choices and standard / high pressure models for each.

Flow Sheet

HOW SNG SYSTEM WORKS : Standard pressure model

Liquid LPG from storage tank is vaporized in a vaporizer’s heat exchanger and sent to Open/Close pressure regulator valve.
When mixed gas pressure inside the surge tank drops lower than the set value (0.03MPa), the LPG pressure regulator controls vaporized LPG pressure down to the set value (0.3MPa), and the vaporized LPG is injected into the mixer unit.
In the mixer unit, LPG is injected through mixer nozzle with high velocity, and energy created there makes air taken into the mixer unit through air inlet, and LPG-air mixed gas is produced.
Mixed gas is sent to the surge tank to stabilize the mixed gas. Once the pressure inside the surge tank reaches the set value (0.4MPa), the Open/Close pressure regulator valve closes in order to suspend LPG injection.
The LPG pressure regulator opens once again when the surge tank pressure drops down to a set value (0.03kPa). The LPG pressure regulator repeatedly opens and closes, and the surge tank pressure will be kept in the range between 0.03-0.04MPa.
Air inlet valve opens by the energy of LPG injection. As it opens only when the LPG is injected, the Kagla SNG system never generate mixed gas with a mixing ratio in the explosive range and it can be operated safe and stable.

HOW SNG SYSTEM WORKS : High pressure model

Liquid LPG from storage tank is vaporized in a vaporizer’s heat exchanger and sent to Open/Close pressure regulator valve.
When mixed gas pressure inside the surge tank drops lower than the set value (0.15MPa), the LPG pressure regulator controls vaporized LPG pressure down to the set value (0.3MPa), and the vaporized LPG is injected into the mixer unit.
In the mixer unit, LPG is injected through mixer nozzle with high velocity, and energy created there makes air taken into the mixer unit through air inlet, and LPG-air mixed gas is produced.
Mixed gas is sent to the surge tank to stabilize the mixed gas. Once the pressure inside the surge tank reaches the set value (0.16MPa), the Open/Close pressure regulator valve closes in order to suspend LPG injection.
The LPG pressure regulator opens once again when the surge tank pressure drops down to a set value (0.15MPa). The LPG pressure regulator repeatedly opens and closes, and the surge tank pressure will be kept in the range between 0.15-0.16MPa.
With the high pressure model, it realizes 0.15-0.16MPa mixed gas by taking high pressure air from air compressor.
Air shutoff valve is mounted as a safety device on air supply line. The air shutoff valve opens and closes by directly receiving LPG injection signal so that no air is supplied unless LPG is injected into the mixer unit. Therefore, the Kagla SNG system never generate mixed gas with a mixing ratio in the explosive range and it can be operated safe and stable.

Features

SYNTHETIC NATURAL GAS SUPPLY

  • Tentative measurement until natural gas is supplied
    At the facility such as a factory that natural gas will be supplied in the future, KAGLA backup mixer can be a tentative measurement until natural gas is supplied.
    You can utilize your end furnaces without any changes once natural gas is supplied.
  • Backing up method for your natural gas supply
    When there is the shortage or insufficient pressures of natural gas, KAGLA backup mixer solves these problems
  • Alternative solution of natural gas
    When fuel price fluctuates rapidly and LPG price becomes lower than natural gas, KAGLA backup mixer can be your alternative solution in order to save your fuel cost.
    It can also be a cost saving solution depending on the fuel price.

ADVANCED SAFETY MECHANISM

  • Float valve with built-in magnet (KAGLA’s Patented Technology) prevents LPG liquid carryover (for 200 / 300 / 500 kg/h models).
    **1. See below for its operation principle.
  • Adapting Venturi method, KAGLA backup mixer does not produce mixed gas within explosive range. (Standard Model)
  • WATER LEVEL SWITCH and SAFETY THERMOSTAT prevents over-heating of water bath

USER FRIENDLY INTERFACE

  • Multi function electric control panel with digital indicator equipped.
    **2. See below for more details

SPACE SAVING COMPACT BODY

  • Minimum body size with Maximum Fuction designed upon long term experience of KAGLA since 1958.

EASY MAINTENANCE STRUCTURE

  • Head cover of AX5 is removable for easy maintenance and overhaul.

WIDE RANGE OF SELECTIONS

  • 6 different vaporization capacity models from 50kg/hr to 500kg/hr.
    (larger models available upon request)

DRAINAGE MEASURE

  • Structure designed to minimize drainage to remain inside.

**1. Function of Float Valve (for 200 / 300 / 500 kg/h models)

*This function is controlled by the Float and Magnet only, but not by electricity nor pilot air. Simple and reliable mechanism secures safe operation.

**2. Display on Electric Control Panel

Control Panel
Table of Operation Status
  • Operation status of vaporizer can be monitored on the electric control panel from remote place.
  • Combination of “lighting on” and “flashing on/off” indications report both the operation status and the cause of the problem.
  • When the numbers 3 / 4 / 5 / 6 are displayed, operation of the vaporizer is interrupted.

Specification

Standard model specification
MODEL EVM-200AX5 EVM-300AX5 EVM-500AX5 EVM-750AX5
Vaporization Capacity LPG (Liquefied Petroleum Gas)
Vaporization Capacity (kg/h) 200 300 500 750
Mixed Gas Spec Supply Volume (Nm3/h) 160 240 400 600
Supply Pressure 3000~4000 (mmAq)
{30~40 (kPa)}
Calorie 58.0 ~ 63.0 (MJ/Nm3) *1
{13850 ~ 15000 (kcal/Nm3)}
Wobbe Index (WI) 48.6 ~ 52.2 (MJ/Nm3) *1
{11620 ~ 12470 (kcal/Nm3)}
Reference NG Calorie 39.2 ~ 42.1 (MJ/Nm3) *2
{9400 ~ 10000 (kcal/Nm3)}
Electric Heater (kW) 28 42 63 96
(14kW x 2) (21kW x 2) (21kW x 3) (24kW x 4)
Standard 3Phase 380V *3
Electric Control Panel Size (mm) 450 x 500 x 250 550 x 600 x 250
Width x Height x Depth
Weight 15 25
Power Single Phase AC220V (±10%) 50/60Hz
Connection Bore LPG Liquid Inlet JIS 20K 20A JIS 20K 25A
Mixed Gas Outlet JIS 10K 80A JIS 10K 100A JIS 10K 125A JIS 10K 150A
External Dimensions Width (mm) 1150 1300 1850
Height (mm) 1700 1800 2200 2500
Depth (mm) 1150 1300 1600
Weight (kg) 400 510 800 1600
Required Surge Tank Capacity (m3) More than 5.0 More than 5.0 More than 12.5 More than 19
Mixer Panel Control Air Pressure 0.5 ~ 0.9
(Mpa)
Required Air (Nl/min) 50
Power Single Phase AC220V (±10%) 50/60Hz
Accessories Electric Control Panel, Anti-Corrosive Solution, Anchors, and Installation, Operation and Maintenance Manual
You can scroll

*1 Reference value in case of NG specific gravity 0.65

*2 Other Power Voltage available 200 ~ 460V

*3 Figures show on the table are approximate. Specificatons are subject to change without notice.

High pressure model specification
MODEL EVM- EVM- EVM- EVM-
200AX5-HP 300AX5-HP 500AX5-HP 750AX5-HP
Gas LPG (Liquefied Petroleum Gas)
Vaporization Capacity (kg/h) 200 300 500 750
Mixed Gas Spec Supply Volume (Nm3/h) 160 240 400 600
Supply Pressure 15000~16000 (mmAq)
{150~160 (kPa)}
Calorie 58.0 ~ 63.0 (MJ/Nm3) *1
{13850 ~ 15000 (kcal/Nm3)}
Wobbe Index (WI) 48.6 ~ 52.2 (MJ/Nm3) *1
{11620 ~ 12470 (kcal/Nm3)}
Reference NG Calorie 39.2 ~ 42.1 (MJ/Nm3) *2
{9400 ~ 10000 (kcal/Nm3)}
Electric Heater (kW) 28 42 63 96
(14kW x 2) (21kW x 2) (21kW x 3) (24kW x 4)
Standard 3Phase 380V *3
Electric Control Panel Size (mm) 450 x 500 x 250 550 x 600 x 250
Width x Height x Depth
Weight 15 25
Power Single Phase AC220V (±10%) 50/60Hz
Connection Bore LPG Liquid Inlet JIS 20K 20A JIS 20K 25A
Mixed Gas Outlet JIS 10K 80A JIS 10K 100A JIS 10K 125A JIS 10K 150A
External Dimensions Width (mm) 1400 1550 2100
Height (mm) 1700 1800 2200 2500
Depth (mm) 1150 1300 1600
Weight (kg) 400 510 1000 1850
Required Surge Tank Capacity (m3) More than 5.0 More than 7.5 More than 12.5 More than 19
Mixer Panel Control Air Pressure 0.5 ~ 0.9
(Mpa)
Required Air (Nl/min) 50
Power Single Phase AC220V (±10%) 50/60Hz
For Mixed Air Large-size Air Compressor Discharge Pressure (Mpa) 0.5 ~ 0.9
Dicchage Air Volume (m3/min) More than 2.4 More than 3.6 More than 6.0 More than 9.0
Accessories Electric Control Panel, Anti-Corrosive Solution, Anchors, and Installation, Operation and Maintenance Manual
You can scroll

*1 Reference value in case of NG specific gravity 0.65

*2 Other Power Voltage available 200 ~ 460V

*3 Figures show on the table are approximate. Specificatons are subject to change without notice.

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