Case of DEAR air separation and DaHua Technology
DaHua Energy Technology Co., Ltd.
DaHua Energy Technology Co., Ltd. is a leading provider of comprehensive disposal solutions for renewable lead in China and a resource recycling enterprise advocated by the country, specializing in lead base series alloy manufacturing and research and development. It has the capacity of annual recycling and disposal of 100000 tons of lead containing waste, and annual production capacity of 100000 tons of refined lead and 60000 tons of alloy lead. Founded in 2005, the company is located in the well-known Taihe Nonferrous Metal Circular Economy Demonstration Park. DaHua Energy has always been focusing on two major fields: comprehensive utilization of recycled lead and professional manufacturing of lead alloy. Dahua insists on qualified producing and taking social responsibility, and constantly creating value for customers. The company has more than 30 years of lead alloy manufacturing experience and talents, and constantly innovates and explores in high-quality lead alloy manufacturing.
Flow:
Purity:
85%
Industry:
Small air separation case
Project address:
AnHui, China
Project Overview
DEAR air separation signed the KDON-8300 / 4000 / 100 (Y) air separation plant contract with DaHua Energy Technology Co., Ltd. In strict accordance with the technical specifications and contract requirements, DEAR air separation carries out design, manufacturing, installation and commissioning, and strives to build the reliable and high-quality air separation plant. At present, the project has successfully completed the commissioning.
Product Advantage
The unit adopts molecular sieve purification, booster turbine expander to supply the cooling capacity of the unit. The oxygen concentration is low, the air compressor discharge pressure is very low, and the energy consumption of the whole equipment is low.
- Good safety: The oxygen evaporator is set to reduce the liquid oxygen concentration ofthe main cooling. At the same time, a large amount of liquid oxygen is discharged from the main cooling to reduce the risk of hydrocarbon accumulation in the main cooling.
- Increase benefit: produce liquid oxygen products for temporary use ofbackup system.
- Reasonable utilization: adopt air-cooled and cold water pre-cooling mode, make full use of waste nitrogengasto achieve the purpose of energy saving.
- Advanced control: DCS control, high degree of automation, convenient operation.
- Energy saving and consumption reduction: new molecular sieve is adopted to reduce air flow resistance, reduce air compressor discharge pressure and save energy. Reduce the heating time of molecular sieve regeneration and save the energy consumption.
Technical Parameter
|
PRODUCT
|
OUTPUT N m³/h
|
PURITY
|
PRESSURE OUT OF COLD BOX Mpa
|
TEMP
|
NOTE
|
|
OXYGEN
|
8300
|
≥85% O2
|
0.35
|
NORMAL
|
EXTERNAL COMPRESS TO 0.4 Mpa
|
|
LOX
|
100
|
≥85% O2
|
Into tank
|
SATURATED
|
|
|
Nitrogen
|
4000
|
≥99.9% N2
|
0.010
|
NORMAL
|
|
|
Crude Nitrogen
|
5600
|
≤1% O2
|
0.015
|
NORMAL
|
EXTERNAL COMPRESS TO 0.7 Mpa
|
Note: the unit of measurement Nm3/h is measured at 0 ℃, 0.1013Mpa (A). It is called standard state quantity.
1.1 Liquid products are calculated by 3 times of gas volume
1.2 Operation cycle (interval between two large heating): ≥ two years
1.3 Heating and uncooling time of the device: ~ 36 hours
1.4 Starting time of the device (from the start of expander to the purity of oxygen product): ~ 40 hours
Matching Units
|
Supporting Units
|
Unit
|
|
1. Centrifugal air compressor
2. Air pre-cooling system
3. Purification system
4. Booster turbine expander
5. Fractionator system
6.Crude nitrogen compression system
7.Oxygen compression system
8.Liquid storage system
9.I & C system
10.Electric control system
|
1 set
1 set
1 set
1 set
1 set
1 set
1 set
1 set
1 set
1 set
|
