1. Equipment composition
Furnace shell: Made of high-quality steel, it has good mechanical
strength and insulation performance, ensuring stable operation of
the equipment at high temperatures.
Heating element: High quality resistance wires or silicon carbide
rods are selected, with reasonable distribution and uniform
heating, which can quickly raise the temperature inside the furnace
to the required temperature for the reaction.
Catalyst bed: filled with efficient ammonia decomposition catalyst
to promote the decomposition reaction of ammonia, improve reaction
efficiency and hydrogen production.
Temperature sensor and control system: Real time monitoring of
furnace temperature, precise adjustment of heating power through
intelligent control system, and maintaining stable reaction
temperature.
Ammonia gas intake system: including ammonia storage tank, pressure
reducing valve, flow meter, etc., precise control of ammonia gas
intake to ensure stable reaction.
Gas purification and separation system: Purify the decomposed gas
to remove impurities and residual ammonia, and separate hydrogen
and nitrogen through a separation device.
Fully automatic control system: using advanced programmable logic
controllers (PLCs) or industrial computers to achieve automated
operation of equipment, including temperature control, flow
control, pressure control, fault alarm and handling functions.
2. Equipment features
Intelligent control: equipped with advanced automatic control
systems, achieving fully automated operation of equipment, reducing
manual intervention, and improving production efficiency and
stability.
Efficient and energy-saving: Optimized furnace structure and
heating element layout, as well as precise temperature control,
enable energy to be fully utilized and reduce energy consumption.
High hydrogen purity: After purification and separation treatment,
the purity of the produced hydrogen can reach over 99.999%, meeting
various high demand industrial applications.
Safe and reliable: equipped with multiple safety protection
devices, such as over temperature alarm, over pressure protection,
gas leak detection, etc., to ensure the safe operation of the
equipment.
Good stability: Using high-quality materials and advanced
manufacturing processes to ensure long-term stable operation of the
equipment and reduce maintenance costs.
3. Technical parameters
Hydrogen production: [specific production range] Nm ³/h
Hydrogen purity: ≥ 99.999%
Nitrogen purity: ≥ 99.99%
Decomposition temperature: [specific temperature range] ℃
Work pressure: [specific pressure range] MPa
4. Application Fields
Metal heat treatment: In processes such as annealing, quenching,
and carburizing of metals, hydrogen gas is used as a protective
atmosphere to improve the performance and quality of metal
materials.
Electronic industry: used for cleaning, etching, epitaxy and other
processes in semiconductor chip manufacturing and integrated
circuit production, providing high-purity hydrogen gas.
Petrochemical industry: used as a hydrogen source in hydrogenation
reactions, oil refining, and other processes to improve product
quality and yield.
Glass manufacturing: providing a protective atmosphere for glass
melting furnaces, improving the quality and production efficiency
of glass.
Research experiment: Provide high-purity hydrogen gas for
laboratory research and experimentation.
In the ammonia decomposition furnace, liquid ammonia is heated to
800-850 ℃, and under the action of nickel based catalyst, ammonia
is decomposed to obtain a hydrogen nitrogen mixture gas containing
75% H2 and 25% N2. The ammonia decomposition furnace equipment
consists of an inner tank box, a furnace liner set in the inner
chamber of the inner tank box, and at least two air pipes passing
through the inner chamber of the inner tank box. The air pipes are
connected to the inner chamber of the furnace liner. The inner
chamber of the inner tank box is provided with multiple central
pipes, which are equipped with electric heating wires. Multiple
pairs of installation holes are opened on the outer wall of the
inner tank box at both ends of the central pipe. Each installation
hole is fixed with a sleeve, and the two ends of the central pipe
are respectively inserted into the sleeve. The outer mouth of the
sleeve has a sleeve cover.
Main components of ammonia decomposition furnace
An ammonia decomposition furnace comprises an inner tank body, a
furnace liner arranged in the inner chamber of the inner tank body,
and at least two air tubes passing through the inner tank body. The
air tubes are connected to the inner chamber of the furnace liner
body. Multiple central tubes are arranged in the inner chamber of
the inner tank body, and electric heating wires are arranged on the
central tubes. Multiple pairs of installation holes are opened on
the outer walls of the inner tank body at both ends of the central
tubes. Each installation hole is fixed with a sleeve, and the two
ends of the central tubes are respectively inserted into the
sleeve. The outer mouth of the sleeve has a sleeve cover. When the
electric heating wire burns out, simply remove the central tube
from the inner container and replace the electric heating wire. The
process of replacing the ammonia decomposition furnace is simple
and fast.
Brief description of ammonia decomposition furnace process
Using liquid ammonia as raw material, ammonia can be cracked to
produce a 2.64Nm mixed gas per kilogram of liquid ammonia, which
contains 75% hydrogen and 25% nitrogen. The obtained gas contains
less impurities (about 2 grams/cubic meter of water vapor in the
impurities and about 1000 ppm of residual ammonia). After passing
through a molecular sieve (UOP, USA) adsorption purifier, the dew
point of the gas can be reduced to below -60 ° C, and the residual
ammonia can be reduced to below 3 ppm
The ammonia cracking hydrogen production furnace can be used for
bright annealing of non-ferrous metals, silicon steel, chromium
steel, stainless steel and other metal materials and parts,
decarburization treatment of silicon steel sheets, copper based and
iron-based powder metallurgy sintering, hydrogen burning treatment
of metal parts in electric vacuum devices, protective sintering and
sealing of semiconductor devices, and diffusion purification of
hydrogen gas through palladium alloy membranes.
The raw material ammonia for ammonia decomposition furnace is easy
to obtain, inexpensive, and consumes less raw materials. Ammonia
cracking to produce protective gas has the advantages of low
investment, small volume, and high efficiency.
This product is used as a protective atmosphere and has been widely
applied in industries such as metal heat treatment, powder
metallurgy, tungsten and molybdenum, magnetic materials, electronic
ceramics, lighting appliances, and hard alloys.
This product gas can also be used as a hydrogen rich raw material
gas to extract pure hydrogen, which is an economical hydrogen
production method. Equipped with PAS or membrane fiber hydrogen
nitrogen separation equipment and our company's gas purification
device, it can remove residual and moisture from the decomposed
mixed gas to meet users' requirements for high-quality protective
atmosphere: residual ammonia content ≤ 5PPm, dew point ≤ -60 ℃
Application:
Thchnical Parameters:
Specifications:
Description |
Continuous gas shielded aluminum brazing furnace equipment |
Automatic constant temperature control |
Advantage: safe operation. |
Operator: 1 person. |
Rated Power(KW) | 150 |
Rated Voltage(V) | 380x3 |
Working Temperature(℃) | 1150 |
Effective Cooling Length (MM) | 4000 |
Heating up time(h) ≤4 |
Empty furnace loss power (KW) | 30 |
Heating element connection method | YYYYYYYY |
Decomposition power (KW) | 10 |
Decomposition capacity (m ³/h) | 100 |
Heating size (L*W*H) mm | 4000x1550x2100
|
Characteristic:
●Adoptfor heat-resistance stainless steel belt or mesh belt
transmit the heat treatment workpieces to pass through heating zone
and colingzoneAndinjectinsert gas or gas ammonia decomposition as a
protective atmosphere to prevent and avoid the workpiece oxidation
in the processafheatingand cooling, to ensure the brazing surface
brightness, no oxidation, no scratches and welding line satiation
●Fumacehearth(i.e.hearting zone or muffle) adopt for imported
Sweden heat-resisting temperature nickel metal 310S) to ensure
thattheworkprietemperature come down to technical requirement when
outlet.
●Withreasonable structure ofheating, uniform furnace temperature,
workpiece on the conveyo belt running smoothly, lit deformation.
Fumaehearth sze Canbe acroding to customer's dif size of the
product and production design and manufacturing, with a strong
specificity and generality.
●Channelfurnace overall appearance is "bridge" structure, front
back inlet and outlet chamber using high quality materials into
intermediate sandwichpipe body;The front and back working face with
horizontal line to be a certain angle, the angle designis6 ' . lts
advantages to saving protectiveatmosphere consumption, reduce the
production cost.
●Adopts advanced frequency control of motor speed conveyor belt
control system, realize the stepless variable speed drive of
components, preciselycontrolthe workpiece in the running time of
the heating zoen, ensure the aluminum brazing process curve
accurate implementation.
● Equipped with modem energy saving type ammonia decomposition
funace.