High Efficient PSA Hydrogen Plant , Hydrogen Recovery Unit From Coke Oven Gas

High Efficient PSA Hydrogen Plant, Hydrogen Recovery Unit From Coke Oven Gas

General

In the production process of coking, iron making and steelmaking, iron and steel enterprises produce a large number of gas by-products, among which H2 is high in content, which is a commonly used gas fuel and also an important secondary energy source. Making full use of the by-product gas of iron and steel enterprises can not only save a lot of fuel, but also extract clean fuel from it, eliminate a large amount of gas discharge, and greatly improve and protect the environment. The product hydrogen with a purity of 99.9-99.999% can be obtained by the mature pressure swing adsorption technology.

Features

• Large scale and high purification.

• The product has a high hydrogen purity.

• Leading technology.

Process Description

The coke oven gas is obtained by removing tar, denaphthalene, atmospheric pressure desulfurization, and fine desulfurization to obtain fine gas. The purified gas can be obtained by compression, pretreatment, pressure swing adsorption, and deoxidation drying to obtain high purity hydrogen.

The technology comprises three main units and combinations, namely TSA, PSA, deoxidation drying, wherein the process principle of PSA is the same as the prior art.

TSA is a temperature-temperature adsorption technology. According to the TSA performance curve, the multi-component mixture gas is separated under certain working pressure, normal temperature adsorption and high-temperature analysis to make the target product gas and impurities.

In the deoxidation drying technology, under the action of a catalyst, oxygen, and hydrogen in the crude hydrogen react to form water to remove oxygen in the crude hydrogen; the generated water is then cooled by a cooler and removed by a TSA drying system to achieve the purpose of purifying hydrogen.

Performance

• COG Capacity: 1,000~100,000 Nm³/h
• Naphthalene content in Product: ≤ 20 mg/Nm³
• Tar content in Product: ≤ 8 mg/Nm³
• Sulfur content in Product: ≤ 10 mg/Nm³
• Hydrogen Purity: 98%~99.999% (v/v)
• Pressure: 0.5 ~3 .0 MPa(G)
• Hydrogen Capacity: 500~50,000 Nm³/h

Founded in 2000, Ally Hi-Tech is an engineering company dedicated to providing engineering service of industrial gas, especially hydrogen.

From design, construction to on-site guidance, after-sale maintenance, Ally has professional teams and provide our clients with customized service. Ally Hi-Tech has been focusing on the innovation of related technology and obtained 38 Chinese patents, 1 European patent, 1 American patent.

Owing to the advanced core tech, Ally participated in 6 national projects including Hydrogen projects of 2008 Olympics and 2020 Expo, while we also provide hydrogen for all the satellite launch centers in China.

Hydrogen production and hydrogen purification is the main business of Ally Hi-Tech.

We participated in the draft of the standards of hydrogen generation by methanol-reforming. As a member of the Chinese hydrogen standard committee, Ally Hi-Tech also took part in the editing of 6 Chinese standards and 1 international standard related to hydrogen.

By now, Ally Hi-Tech has delivered more than 500 units all over the world and built up cooperative relationships with a lot of clients, such as Air Liquide, Linde, Praxair, BP, Iwantani Group, etc.