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High-efficiency alkaline water electrolyzers, PEM generation units, and gas processing skids engineered for continuous petrochemical integration.
Large-scale, robust alkaline electrolysis platforms offering long service life and high cost-efficiency for industrial refinery gas feedstock.
Explore Specifications
Rapid dynamic response proton exchange membrane electrolyzers tailored for direct intermittent renewable grid coupling and high-purity supply.
Explore Specifications
Comprehensive desulfurization, decarbonization, and dehydration skids delivering ultra-clean gas feedstocks for chemical complexes.
Explore Engineering Skids
Advanced separation engineered to remove siloxanes, H2S, and VOCs, conditioning bio-methane and complex off-gases into valuable fuels.
Explore Treatment SystemsThe global petrochemical sector stands at a critical technological inflection point. For decades, steam methane reforming (SMR) and coal gasification have supplied gray hydrogen to refinery operations, generating substantial carbon dioxide emissions—typically 9 to 12 kg of CO2 per kilogram of hydrogen produced. As international regulatory frameworks like the European Union's Renewable Energy Directive (RED III), the U.S. Inflation Reduction Act (IRA Section 45V), and national carbon peak mandates tighten emissions caps, petrochemical complexes are accelerating the adoption of green hydrogen production for petrochemical gas purification.
In modern downstream processing, hydrogen is not merely a chemical fuel; it is the fundamental reactant required for catalytic purification, heteroatom removal, and molecular synthesis. By substituting carbon-intensive gray hydrogen with high-purity green hydrogen (99.999% purity) generated via water electrolysis powered by renewable energy, petrochemical refineries can simultaneously slash Scope 1 and Scope 2 greenhouse gas footprints while radically boosting catalytic selectivity and equipment service intervals.
Refinery streams and industrial gases encompass complex multi-component mixtures laden with sulfur compounds, nitrogen heterocycles, olefins, carbon oxides, and heavy trace metals. Integrating green hydrogen enables specialized purification methodologies across key processing units:
Petrochemical naphtha, diesel fractions, and cracked gas streams contain recalcitrant sulfur molecules such as dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT). Ultra-pure green hydrogen guarantees maximum active site saturation on cobalt-molybdenum (CoMo) and nickel-molybdenum (NiMo) catalysts, converting organic sulfur into hydrogen sulfide (H2S) with minimal side-reaction coking, meeting strict near-zero sulfur specs (<10 ppm).
In oxo-chemical, methanol, and ammonia synthesis lines, syngas (CO + H2) must maintain stringent stoichiometric ratios while keeping CO2 and trace oxygen contaminants within parts-per-billion limits. Onsite green hydrogen dosing adjusts stoichiometric H2/CO modules, converting residual trace carbon oxides into stable methane via methanation polishing stages, preventing downstream precious-metal catalyst poisoning.
Refinery off-gases from fluid catalytic cracking (FCC) and continuous catalytic reforming (CCR) carry valuable hydrocarbons intertwined with inert and sour gases. Incorporating green hydrogen allows selective hydrogenation of acetylene, diolefins, and alkynes in ethylene/propylene purification towers, stabilizing polymer-grade monomer streams without product loss.
Direct coupling of green hydrogen generation with carbon capture, utilization, and storage (CCUS) facilities allows petrochemical operators to convert captured CO2 from flue gas scrubbers into e-methanol, synthetic aviation fuels (SAF), and green olefins, creating a closed-loop circular carbon economy that transforms waste emission streams into high-value chemical products.
Choosing the optimal electrolysis system for petrochemical gas purification requires balancing CAPEX, operational agility, footprint, and integration with renewable energy assets:
Alkaline Water Electrolysis (AWE): Characterized by mature engineering, long-term durability, and low stack cost using non-precious catalysts. AWE systems excel in massive, steady-state baseline operations where continuous, multi-megawatt hydrogen output is piped directly into refinery hydroprocessing units.
Proton Exchange Membrane (PEM) Electrolysis: Leveraging perfluorosulfonic acid solid polymer electrolytes, PEM equipment delivers high current densities, compact physical footprints, and rapid millisecond-scale ramping capabilities. This responsiveness makes PEM units ideal for pairing directly with fluctuating on-site solar PV and wind generation, delivering pressurized H2 without external pre-compression.
With excellent products and service, to become the world famous brand of exports.
Xuzhou Huayan Energy Technology Co., Ltd. is a leading energy equipment supplier headquartered in Xuzhou, Jiangsu Province, China, operating from a 91,260-square-meter facility. With a heritage of design and manufacturing expertise since 1965, we possess comprehensive in-house capabilities spanning forging, casting, heat treatment, welding, machining, assembly testing, and advanced technical inspection.
We deliver customized product design, manufacturing, installation, and integrated project solutions for critical sectors including national defense, aerospace, nuclear power, and petrochemicals. Our core offerings encompass air separation and purification systems such as PSA/VPSA nitrogen & oxygen generators and cryogenic air separation units, energy application equipment including CNG and diesel generators, and industrial gas purification solutions for natural gas processing, LNG plants, helium extraction, and carbon capture.
Learn More About Our Company
Take an immersive virtual tour of our 91,260㎡ intelligent manufacturing and testing center in Xuzhou.
Our engineering solutions ensure stringent gas purity, safety compliance, and energy resilience across high-consequence industries.
Petrochemical & Refining
National Defense
Aerospace
Nuclear Power
Inert blanketing for reactors, pipeline and vessel purging, nitrogen drilling, and displacement in oil & gas fields. Coupled with green hydrogen injection for hydrodesulfurization, our gas purification skids eliminate explosion hazards while maximizing catalyst cycle life.
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Long-term academic research collaboration with China University of Mining and Technology and Xi'an Jiaotong University drives continuous innovation across our 3 core technological pillars.
Air Separation & Purification Systems
We are masters of gas extraction, offering a full spectrum of solutions from PSA/VPSA nitrogen and oxygen generators for industrial use to large-scale cryogenic air separation units for high-purity, high-volume production.
Industrial Gas Purification Solutions
Our expertise extends to the entire gas value chain. We design and build advanced systems for natural gas processing, LNG plants, helium extraction, and carbon capture (CCUS), helping clients optimize resources and meet environmental goals.
Energy Application Equipment & Quality Assurances
We provide reliable power solutions for any scenario, including robust diesel generators for prime or backup power and efficient CNG generators for clean energy applications. Supported by 100% customer satisfaction, a professional after-sales team, and strict quality control.
Engineered for seamless integration with hydrogen purification, air separation, and distributed energy infrastructures.
Turnkey skids for wellhead gas separation, dehydration, and condensate stabilization in upstream gas gathering.
Engineered biological and chemical scrubbing systems designed to purify raw biogas into bio-methane and clean fuel.
Custom multi-stage filtration, absorption, and cryogenic condensation skids for refinery and chemical plant off-gases.
High-volume cryogenic distillation plants producing tonnage-scale liquid/gaseous oxygen, nitrogen, and high-purity argon.
PSA and membrane nitrogen generation systems providing continuous inert blanketing and purging gas with up to 99.999% purity.
Onsite VPSA and PSA oxygen enrichment systems engineered for chemical oxidation, Claus sulfur recovery, and water aeration.
High-pressure water electrolysis units and gas deoxygenation/drying skids ensuring zero-carbon, dry H2 for gas purification.
Resilient, heavy-duty prime and standby power generation units ensuring uninterrupted operation for remote gas processing facilities.
Collaborating with tier-one international energy corporations and certified component manufacturers worldwide.
