KDON High Purity ASP Medium Size cryogenic air separation plant ASU

Oxygen Gas Plant Nm3/h KDON-2600/1500 ASP

Specifications:

The followings are the standard products for the Cryogenic Air Separation Plant KDON series which are manufactured by our company. Regarding other particular product can be calculated and designed according to the actual requirements.

Typical Product: KDON-2600/1500 Cryogenic Air Separation Plant

Output, purity and pressure

Description:

This ASU adopts a process in which air is purified by normal temperature molecular sieve, refrigerated by booster expansion turbine; the fractionating cloumn adopts the external compression process with sieve plates techology. This ASU is able to run economically and properly in the load adjustment range 80% ~105% of production capaicty, without adding any other equipment. Its process procedure is as the followings:

Following the elimination of dust and other mechanical impurities from process air in an air filter, the process air enters air turbo- compressor where it is compressed to a certain pressure, and then it is cooled in a cooling column. The feed water to air cooling column is divided into two section, the circulating water treated with water is used in the lower section of cooling column, while the cryogenic water cooled by water cooling column is used in the upper section of cooling column. And a demister is set on the top of air cooling column to prevent moisture dragout and elimination of water drops in air.

Process air out of air cooling column enters the alternately - operated molecular sieve adsorbers where such impurities contained in air as moisture, CO2 and C2H2 etc. are adsorbed.

The cleaned process air is divided into 3 streams: A small portion of the purified processed air is drawn out as instrument air. One portion enters main heat exchanger E1 to be cooled down to saturation temperature with reversed gas and then enters lower tower C1; Another portion of the air with its quantity equals to the swelling quantity to the booster, supercharged by the booster, then cooled to normal temperature by cooling water before entering the main heat exchanger E1. It is drawn out from the middle of the main heat exchanger and expanded by the expander ET. Most part of the expanded air is fed to the upper column for rectification, the air is initially rectified in the lower column, where liquid air is obtained at its bottom, pure liquid nitrogen is obtained at its top. The liquid air and pure liquid nitrogen drawn out from the lower column are subcooled in the liquid air and liquid nitrogen subcooler E2 before entering the upper column. After further rectification in the upper column, product gaseous oxygen and liquid oxygen with low pressure is obtained at its bottom, oxygen gas is fed out of cold box to GOX pipe network by compression of oxygen compressor after rewarmed through main heat exchanger. Meanwhile, partial liquid oxygen is drawn out of the bottom of upper column to the liquid oxygen storage system.

Pure gaseous nitrogen is drawn out of the top of upper column to be rewarmed in subcooler and main heat exchanger before it is fed out of cold box, and then it is fed to GAN pipe network after compession of nitrogen compessor.

Waste nitrogen gas is drawn out of the upper portion of upper column to and rewarmed in subcooler and main heat exchanger before it’s fed out of cold box for meeting the requirement of regeneration gas for molecular sieve firstly, and then the rest is delivered to water cooling column.

LOX back-up system: liquid oxygen in storage tank is supercharged by LOX pump before it is rewarmed in LOX vaporizer to be gaseous oxygen to GOX pipe network.

LIN back-up system: liquid oxygen in storage tank is supercharged by LIN pump before it is rewarmed in LIN vaporizer to be gaseous oxygen to GAN pipe network.

Applications:

1. Freezing

2. Sealing Gas

3. Water and wastewater treatment

4. Metal production

Competitive Advantage:

1. Low power consumption

2. Economization of energy,

3. Good quality materials

4. All gas and liquid plants are optimized to meet customer-specific site requirements

       Hangyang Cryogenic Liquefaction Equipment Co., Ltd. is one of the holding subsidiaries of Hangyang Co.,Ltd.(stock code:002430), it is organized on the basis of the original Small Scale of ASU Company of Hangzhou Hangyang Co,.Ltd. It is the major engineering, research and manufacturing base for small size of ASU and liquefaction plants in China, It is located in Hangyang Manufacturing Base in Lin'an Economic Development Zone, the address of sales office is No. 592, Zhongshan North Road, Hangzhou. It undertakes engineering consulting, design and manufacture, assembled construction design, installation and commissioning and supply of parts for medium and small size of ASU with its professional quality. It is the main base of design, research and manufacture for the domestic medium and small size of oxygen/nitrogen generating plants, liquid oxygen/liquid nitrogen plants, oxygen/nitrogen liquefiers, high-purity nitrogen generators, vacuum pipes and Pressure Swing Adsorption (PSA) for oxygen/nitrogen generating, etc.; Meanwhile, it is also the professional manufacturer for integrated assembly or skid type of medium size of ASU for leaving workshop by Hangyang, its abilities of design and manufacture for integrated assembly of medium size of ASU reach the leading domestic level. Our company has the independent import and export trade qualification.

      Our company possesses professional technical personnel teams of design and EPC engineering of ASU and also possesses design ability of product such as independent process calculation, project design, unit design, project EPC. The manufacture base of our company was relocated to new site in 2009. Recently, the floor area is 40.34 acres. Combinating with relocation, the imported and set-up professional manufacture production tools, moulds and equipment forms the manufacture ability for manufacture ASU whose capacity is below 30,000Nm3/h. Our company carries out the international administration concept and obtains authentication certificates of management system such as ISO9001, ISO14001 and OHSAS18001 of DET NORSKE VERITAS. Meanwhile, we obtains manufacturing license for pressure vessels manufacture D1 and D2, Zhejiang new high-tech enterprise certificate and small and medium-sized technology-based enterprise certificate, our company possesses impeccably professional manufacturing credentials for medium and small size of ASU.   

     Our company sets product research, manufacture, marketing and service in one to elaborately provide general customers superiorly coordinated service on the basis of decades experience in design and manufacture and administration concept by Hangyang. Products involve aspects such as metallurgy, petrifaction, electron, machinery, building materials and aerospace. Our products are not only sold well throughout China, but also sold to the West, and our company becomes the designated supplier for several well-known gases investment companies abroad. In the cooperation with transnational large gases companies, our company absorbs and imports the advanced design concept, strict administration program, exquisite manufacturing technology so as to lead our company to develop in the direction of diversification, exquisite products and large-scale. Hangzhou Hangyang Cryogenic Liquefaction Engineering Co., Ltd. undertakes EPC works of ASU under our company.