Ammonia Cracking, Hydrogen Production, For Glass floating Line, Steel Industry

Ammonia Cracking, Hydrogen Production, For Glass Floating Lines, Steel Industry

Hydrogen is indispensable for the bright hardening of metals. But, viewed from the standpoint of safety,
hydrogen gas is by no means a good atmosphere. Dissociated ammonia atmosphere or
forming gas is the only furnace atmosphere that can make up the demerits of hydrogen and function
nearly 100% as if it were hydrogen gas. There are cases where forming gas cannot replace pure
hydrogen, but such cases are very rare. For almost all applications involved, developing a gas atmosphere
will answer the purpose.
An ammonia cracker, NH3-Cracker, or hydrogen generator is used for the production of forming gas. Hydrogen
and Nitrogen is generated in a cost-effective way in a volume ratio of 3: 1 or in a weight ratio of 14 : 3.

The NH3 is coming from bottles or from an ammonia tank. The ammonia gas is preheated in a heat
exchanger and vaporizer and then cracked in the central furnace unit. The furnace is electrically
heated by special LGO heating elements.

The dissociation of ammonia gas NH3 takes place at a temperature of 920°C in the presence of a
special nickel catalyst in an electrically heated furnace.
2NH₃------------N₂ + 3 H₂
The cracked gas then passes the heat exchanger for cooling and for preheating the incoming gas.
This way and in combination with the low power consuming LGO heating
elements, it can be made sure that only a minimum of electricity has to be used for the cracking process.

Technical figures;

The gas made in this method is a good protective gas that can be used widely in the semiconductor
industry, metallurgical industry, and other industries and science research that need protective gas.
1. Ammonia is easy to decompose: With not very high pressure, under catalysts, and
a temperature controlled at 750~800ºC, the ammonia will nearly completely decompose, with the
decomposing rate reaching 99.9%.
2. Easy to refine the gas: As the raw material, the liquid ammonia is of very high purity. The volatile
impurities are only little inert gas and water dissolved in the liquid ammonia and there is nearly no
oxygen. Meanwhile, under such conditions, ammonia decomposition is irreversible. So the water
can be removed by adsorbing with a dew point of -60 ºC while the gas doing through the 5A molecular
sieve. In this way, the nonmetallic elements, for example, chlorine and oxygen which are unpopular in
the semiconductor industry can be removed.
3. In China, the liquid ammonia as raw material is accessible at a low price, and the raw material
consumption is also relatively smaller (In theory, each Kg of ammonia can create 2.64 Nm3 mixed gas).

Properties and Characteristics:

1) Save water and electricity: No water is used in the ammonia decomposing process, thus saving

water effectively; The heat generated from the decomposition reaction is used to preheat the ammonia

so as to save electricity.
2) Resistance wire can be replaced quickly: It can be replaced only within a few minutes, with no need to

stop the gas production process. Therefore, the case of shutting down the furnace to cool down and

then opening the furnace to replacing the resistance wire is avoided.
3) Low investment and convenient use: Matured technology, compact structure, low space requirement

and no need for construction investment, easy operation, low price, or high economy to extract the pure

hydrogen; In order to generate hydrogen on spot, the only thing to do is to connect power and gas

source.
4) Wide application scope: It can satisfy the need of most hydrogen use, especially in the dominating

fields of heat treatment, powder metallurgy, electronics, and so on.
5) Low operation cost: Less investment, liquid ammonia as the source is cheap, low energy consumption,

high efficiency, low operation cost; It is the most economical source of the mixed protective atmosphere

of nitrogen and hydrogen.

Ammonia Cracker Plant Parameters

For more detail, feel free to contact us.

We are dedicated in the research, development, design, production, manufacturing, sale and service of all kinds of industrial gas equipment, and provide professional consultation on industrial gas systems and related products. Our main products include PSA nitrogen generators, PSA oxygen generators, PSA hydrogen generators, ammonia cracking plant, nitrogen purification plant, methanol decomposition plant etc.

We have obtained dozens of National Invention patents through over 10 years and international certificates such as: ISO9001 international certification, TS certification, SGS testing and certification, CE certification, the United States ASME certification, China Classification Society CCS certification, BV certification, American Bureau of Shipping ABS certification, British Classification Society LR certification, German Classification Society GL certification.

We have provide quality equipment and services for customers from over 30 different industries, such as China Petro, China National Petroleum, CNOOC from petrochemical industry; Sony, Panasonic, Asus, Foxconn from electronics industry; Minute Maid, Jinllongyu, Dio Coffee from food industry; Shanghai Hyundai Pharmaceutical, Jilin Aodong pharmaceutical from pharmaceutical industry; Jiangxi Copper Corporation, Gaoxinzhang Copper from copper processing industry. We also maintain long-term cooperation with the esteemed research institutions, such as Tsinghua University, Henan University, Sichuan University, Tianjin University, 718 Research Institute, etc.. The firefighting system for Beijing Olympic Games in 2008 are equipped with our nitrogen system. Both phase 1 and 2. Nanjing Mint and Shanghai Mint have both purchased and used our Nitrogen system units for their coin production, and the result has been excellent.

Furthermore, we have exported our gas plants to over 40 different countries, with proven result on its quality, stability and safety. We hold the core culture concept of "people-oriented, realistic and innovative, customer first, quality first". We will continue the introduction of advanced technology and scientific research achievements from domestic and abroad, in order to provide more valuable products and services. With the advantages of technical know how, marketing and service, we’ve build a competitive, leading, respected enterprise in our society, in which all the staffs take pride of.

Our workshop:

Our Honor:

2016

●Becoming a member of OptimumNano Innovation Union

●Providing nitrogen generators for world largest Ore Carrier Vessels (400,000 DWT)

2015

●Obtained certifications of ISO9001: 2008 quality management system, Lloyd’s Register of Shipping (UK LR), Bureau Veritas( France BV),American Bureau of Shipping(ABS)and CONFORMITE EUROPEENNE (CE)

●Started exporting our industrial gas solution to international users.

2013

●Approved to be qualified Haier Group supplier, providing PSA nitrogen generator and Membrane nitrogen generator.

2012

●Obtained over 10 Invention Patents on Hydrogen Recovery System Plants, positioning ourself as leader in the industry

●Installed several bell furnace hydrogen recovery system production lines for cold rolled strip manufacturers, effectively reduce the energy cost.

●Provided nitrogen generator for LNG vessel, becoming the first LNG nitrogen generator supplier in this area.

2011

●Installed 2800Nm3/h ship nitrogen generator for a domestic shipping company, becoming the largest ship nitrogen generator manufacturer in China.

2010

●Obtain pressure pipeline special equipment manufacturing license

●Provided the largest nitrogen purifier for SINOPEC, set a record of maximum carbon type nitrogen purifier in China.

2008

●Approved to be Qualified Supplier by China Aerospace Science and Technology Group

●Obtained China Classification Society (CCS) certification

●Cooperated with CNOOC(China National Offshore Oil Corporation) first ship nitrogen generator, which was highly appraised.

2007

●Officially began to be IUR Base for Sichuan University and Material Institute of Central South University of Forestry and Technology

●Approved as“High Technology Enterprise of Jiangsu Province”

2006

●Approved as nominated supplier for CBPMC(China Banknote Printing and Minting Corporation)

September 2004

●Suzhou Since Gas System Co.,Ltd was officially founded

●Full set of nitrogen/ hydrogen gas station successfully installed at Nanjing Mint, which were highly appraised;