NATURAL GAS REDUCTION, LIQUEFACTION AND COMPRESSION COMPLEX KRSK

Natural Gas Reduction, Liquefaction and Compression Complex (KRSK) is intended for the production of liquefied and/or compressed natural gas from the natural gas of the main pipeline branches. It is placed on the bypass of existing gas distribution stations or as a gas distribution station during new construction.

 

Construction of a natural gas reduction, liquefaction and compression complex (KRSK) with a capacity of up to 20 tons/hour is required in order to:

• expand the use of gas motor fuel in transport by means of autonomous gas supply to filling infrastructure,
• intensify gasification of the regions of the Russian Federation due to autonomous gas supply to consumers, the construction of gas pipelines to which is economically inefficient,
• compensate uneven gas consumption due to gasification of consumers with a seasonal peak in the opposite phase to traditional consumers (motor-and-tractor equipment, water transport, agriculture),
• obtain additional profit from the sale of products on the domestic energy market,
• increase the load of existing gas pipeline-branches and gas pipeline-branches under construction.

 

PROCESS TECHNOLOGY

 

 

 

 

KRSK block diagram

1 - dehydration unit, 2 - CO2 removal unit, 3,4 - expanders, 5 - compressor, 6,7 - heat exchangers, 8 - air cooling unit, 9 - LNG separator

 

 

 

 

 

 

 

FEED

Combustible natural gas according to Gazprom company standard STO 089-2010

P=2.5 ÷ 5.5 MPa, T=0-20 °C, LHV=35.4 MJ/nm3

 

 

PRODUCTS

Combustible natural gas according to GOST 5542-2014

Р=0.6 (1.2) MPa, Т=10-40 °С, LHV=34.5-35.1 MJ/nm3

 

Combustible liquefied natural gas according to GOST R 56021-2014

Р=0.2 ÷ 0.8 MPa, Т=-124.1-151.3 °С, %mole СН4=78.9-94.5

 

 

OUTPUT

Pinlet, MPa Liquefaction ratio, %	2,5	3,0	3,5	4,0	4,5	5,0
	14,4	18,5	21,4	23,5	25,3	26,5

 

ANALOGUE

Gas Distribution Station-4, Gazprom Transgaz Yekaterinburg LLC, 2014

Pinlet, MPa Liquefaction ratio, %	2,5	-	3,5	-	4,5	-
	7,0	-	9,4	-	10,2	-

 

The proposed Natural gas reduction, liquefaction and compression complex KRSK installed on the bypass of the existing gas distribution station, in contrast to the well-known technical solutions implemented, for example, at the Gas Distribution Station-4 of Gazprom Transgaz Yekaterinburg LLC as part of a joint project with Scientific Production Association HELIYMASH OJSC, makes it possible:
• to increase the LNG output by 2.2-2.5 times with the same gas productivity and an equal amount of capital investment,
• to exclude electricity consumption,
• to exclude fuel gas consumption at the existing gas distribution station,
• to receive compressed natural gas (CNG) if necessary.