Cubic ammonia decomposition hydrogen furnace

Product Overview

Description

 

Cubic ammonia decomposition hydrogen furnace

 

 

 

I,  Brief description of ammonia decomposition hydrogen production process

 

Liquid ammonia is used as raw material. After ammonia is cracked, 2.64Nm3 mixed gas can be produced per kilogram of liquid ammonia cracked.

Contains 75% hydrogen and 25% nitrogen. The obtained gas contains less impurities (about 2 g / m3 of water vapor in the impurities, and about 1000 ppm of residual ammonia), and then passed through a molecular sieve (UOP) adsorption purifier, the dew point of the gas can be reduced to -600C and the residual ammonia can be reduced Below 3PPM.

Ammonia cracking hydrogen furnace can be used for bright annealing of non-ferrous metals, silicon steel, chrome steel and stainless steel and other metal materials and parts, decarburization treatment of silicon steel sheet, copper-based and iron-based powder metallurgy sintering, and hydrogen treatment of metal parts for electric vacuum devices , Protective sintering and sealing of semiconductor devices, palladium alloy film diffusion and purification of hydrogen source gas, etc.

The raw material ammonia is easy to obtain, the price is low, and the raw material consumption is small. Ammonia cracking to produce protective gas has the advantages of less investment, small size, and high efficiency.

 

 

II,Working principle of ammonia decomposition to produce hydrogen:

Ammonia (gaseous) is decomposed into 75% hydrogen and 25% nitrogen under the action of a catalyst (Southwest Academy Z204) at a certain temperature, and absorbs 21.9 kcal of heat. Its main reactions are:

2NH3-3H2 + N2-21.9 kcal

The entire process is an endothermic expansion reaction. Increasing the temperature is favorable for ammonia cracking. At the same time, it is a reaction that expands the volume. Lowering the pressure is favorable for the decomposition of ammonia.

 

 

III,Working principle of hydrogen purification:

When the hydrogen produced by the ammonia decomposition hydrogen production equipment is qualified, it enters the hydrogen purification for further purification treatment. The purity of the cracked hydrogen is very high. Among them, the volatile impurities are only traces of residual ammonia and water. High purity gas.

Gas purification uses temperature-change adsorption technology. Temperature-changing adsorption (TSA) technology is a gas separation and purification process based on the adsorption performance of gas molecules at different temperatures on the internal surface of the adsorbent (porous solid matter). ,

The surface of the molecular sieve is full of micropores, which can absorb 20% of its own weight (water and impurities during static adsorption at normal temperature and pressure), and can be completely regenerated at a temperature of about 350 ° C. It is switched every 24 hours to obtain Product gas with acceptable purity and impurity content.

 

 

Products	Parameter
Product gas purity	H2 :75%,N2:25%,
	Dew point≤-60℃
Product gas pressure	0.1Mpa
Residual ammonia content	≤5PPm
Product gas temp	Ambient temperature
Rated gas production	5Nm3/h
Operation Temp	7500C~8500C
Power	7KW 220V
Power per purifier	1KW220V
Working temp per purifier	Normal temperature
Purifier regeneration temp	3000C
weight	700Kg
demension	1100X1300X1700