Both low temperature shift and high temperature shift catalysts are used for CO conversion process, working in series reactors of ammonia plant. ●Chloride content of LTS feed gas: Lower than 0.1 ppm. Normally, the sulfur content at CO conversion stage is quite low. ●Sulfur content of LTS feed gas: Lower than 1 ppm. Normally, the chloride in this stage usually comes from vapor.
Low temperature shift(LTS) catalyst B217 catalyst is used for CO conversion process in the syngas productions of ammonia plant, same as HTS catalyst. ●Self-guard catalyst: Yes it is. Chloride & Sulfur guard is not needed to load of the top of low temperature shift(LTS) catalyst B217. It can remove trace chloride and sulfur during the running. ●Chloride&sulfur guard: It is guard catalyst(5%-10%) of some brands, to protect the main LTS catalyst for reaction. If customers want to keep the same loading mode of previous brands, we can supply chloride and sulfur guard also.
Normally, Cr(III) is one of the active components of high temperature shift(HTS) catalyst which shown as Cr2O3 with content around 7%. ●Cr(VI) content: Much less than 0.05%. ●Test method: By titration with Mohr salt after dissolution in HCl.
High temperature shift(HTS) catalyst Syamcat B117X is used for CO conversion process in the hydrogen and syngas productions of ammonia plant and refinery. ●Sulfur content: Lower than 250 ppm, especially for ammonia plant and methanol plant. ●Graphite content: Lower than 3%. Graphite is mainly used as lubricating agent during HTS catalyst molding process(tablet).
HDS catalyst Syamcat YJ 18G should be sulfided(convert oxidation state of Co and Mo etc active component into sulfurized state) to increase the activity, stability and selectivity. ●Non-sulfided: We usually suggest non-sulfided HDS catalyst to help customers to save cost. Sulfuration procedure can be carried out and finished soon during stable running(after startup), based on the sulfur content of feedstock. ●Pre-sulfided: Can be offered also if necessary(sulfuration procedure should be done before loading of the catalyst). We can finish the sulfuration procedure on our facilities.
Syamcat YJ 18G is a hydro-desulfurization catalyst(HDS) is using Co, Mo and Ni etc as active component for conversion of organic sulfur to inorganic sulfur. HDS catalyst is mainly used for hydrogen and syngas productions in ammonia plant, methanol pant and refinery which using NG and LPG as main feedstock. ●Shelf life: 3 years(cool place, out of sunshine, in barrel). ●Working life: 3 years at least(technical service can be obtained). ●Expected working life: 5 years(technical guidance can be offered according to actual operating conditions).
Syamcat YJ 18G is a hydro-desulfurization catalyst(HDS) for conversion of organic sulfur to inorganic sulfur in the feedstock like NG, LPG. HDS catalyst is mainly used for hydrogen and syngas productions in ammonia plant, methanol pant and refinery. ●LOI content: Normally lower than 2%. ●Test method: Maintain 3 hours under 550℃.
What are the benefits of steam reforming catalysts for syngas industries? Steam reforming catalysts bring several benefits to customers:1. Increased Efficiency: Steam reforming catalysts facilitate the conversion of hydrocarbons into syngas (a mixture of hydrogen and carbon monoxide), which is a crucial step in various industrial processes such as ammonia production, methanol synthesis, and Fischer-Tropsch synthesis. By enhancing the efficiency of this conversion process, steam reforming catalysts contribute to overall process efficiency.2. Cost Reduction: Improved catalyst efficiency and selectivity lead to higher yields of desired products such as hydrogen and syngas, thereby reducing the amount of raw materials needed for production. This can result in cost savings for customers by optimizing resource utilization and minimizing waste.3. Product Quality: High-quality steam reforming catalysts help ensure the production of syngas with consistent composition and purity. This is essential for downstream processes that rely on syngas as a feedstock, such as in the production of chemicals, fuels, and other industrial products.4. Extended Catalyst Service Life: Advanced steam reforming catalyst formulations often exhibit enhanced stability and resistance to deactivation mechanisms such as coking, poisoning, and sintering. This prolongs the catalyst's service life, reducing downtime and maintenance costs for customers.5. Environmental Benefits: Efficient steam reforming processes with optimized catalysts can contribute to reduced emissions and environmental impact. By promoting cleaner production methods and minimizing energy consumption, steam reforming catalysts help customers meet regulatory requirements and sustainability goals.6. Process Flexibility: Tailored steam reforming catalyst formulations can be designed to accommodate a wide range of feedstocks and operating conditions, offering customers greater flexibility in process design and optimization. This adaptability allows for the optimization of production processes to meet changing market demands and regulatory requirements.Overall, steam reforming catalysts provide customers with improved process efficiency, cost savings, product quality, environmental benefits, and process flexibility, making them indispensable components in various industrial applications.
What are the physical and chemical properties of steam reforming catalysts? The physical and chemical properties of steam reforming catalysts include:1. Catalytic Activity: The ability of the catalyst to promote the reaction, typically measured in terms of product generation rate or conversion rate. For steam reforming catalysts, catalytic activity affects the rate and selectivity of syngas production.2. Selectivity: The ability of the catalyst to convert reactants into specific products. In steam reforming, high selectivity means more of the product is syngas rather than other byproducts.3. Stability: The ability of the catalyst to maintain its performance over extended periods of operation. Steam reforming catalysts need to exhibit good stability to sustain their activity and selectivity, reducing the frequency of reaction interruptions and catalyst replacement.4. Surface Area: The activity of the catalyst is often closely related to its surface area, as reactions occur on the catalyst surface. A larger surface area typically means more active sites, thus enhancing reaction rates.5. Crystal Structure: The crystal structure of the catalyst can affect its activity and selectivity. Specific crystal structures may favor certain reaction pathways, thereby influencing the efficiency and product selectivity of the steam reforming reaction.6. Resistance to Poisoning: Many catalysts are susceptible to poisoning by substances from reactants or reaction conditions. Resistance to poisoning refers to the catalyst's ability to withstand these toxic substances.Considering these physical and chemical properties, the design and optimization of steam reforming catalysts can improve the efficiency and product selectivity of syngas production, thereby reducing production costs and environmental impacts.
How do steam reforming catalysts facilitate hydrogen production? Steam reforming catalysts promote hydrogen production by catalyzing the endothermic steam reforming reaction, which involves the decomposition of hydrocarbons into hydrogen and carbon dioxide in the presence of steam. This reaction occurs over a catalyst surface, typically composed of nickel or other transition metals supported on a stable carrier material. The catalyst facilitates the dissociation of steam molecules and the subsequent adsorption of hydrogen and carbon-containing species, promoting their interaction and conversion into hydrogen and carbon dioxide. Through its catalytic activity, the steam reforming catalyst enhances the reaction kinetics and selectivity, thereby improving the efficiency and yield of hydrogen production. Additionally, steam reforming catalysts help to minimize undesirable side reactions, such as carbon deposition or coke formation, which can lead to catalyst deactivation and reduced performance over time. Overall, steam reforming catalysts play a crucial role in driving the sustainable production of hydrogen, contributing to the advancement of clean energy technologies and the transition to a low-carbon economy.
What are the main advantages of using steam reforming catalysts? The main advantages of using steam reforming catalysts lie in their ability to efficiently facilitate the conversion of hydrocarbons, such as natural gas or methane, into hydrogen and carbon dioxide. These catalysts play a crucial role in the steam reforming process, which is the most common method for large-scale hydrogen production worldwide. By catalyzing the reaction between hydrocarbons and steam at high temperatures, steam reforming catalysts enable the generation of hydrogen gas, which is vital for a wide range of industrial applications, including hydrogen production, ammonia production, and methanol synthesis production.
What factors influence the performance of steam reforming catalysts? Several factors can significantly impact the performance of steam reforming catalysts:Catalyst Composition: The composition of the catalyst, including the type and amount of active metals (such as nickel, cobalt, or platinum) and promoters (such as alumina or zirconia), can influence its catalytic activity and selectivity.Catalyst Structure: The physical structure of the catalyst, including its surface area, pore size distribution, and particle size, affects the accessibility of reactants to active sites and the diffusion of reaction products, thereby influencing catalytic activity and stability.Reaction Conditions: Operating parameters such as temperature, pressure, steam-to-carbon ratio (S/C), and space velocity can significantly impact the performance of steam reforming catalysts. Higher temperatures typically increase reaction rates but may also promote catalyst deactivation through sintering or coke formation.Feedstock Composition: The composition of the feedstock, particularly the ratio of methane to steam and the presence of impurities such as sulfur compounds, can influence catalyst performance. Higher steam-to-carbon ratios generally favor hydrogen production, while sulfur-containing compounds can poison catalysts and reduce their activity.Catalyst Preparation and Activation: The method of catalyst preparation, including impregnation, precipitation, or co-precipitation, as well as the method of catalyst activation (e.g., reduction in hydrogen or calcination), can affect catalyst structure and performance.Catalyst Deactivation: Catalyst deactivation mechanisms, such as sintering (agglomeration of metal particles), carbon deposition (coking), and poisoning by sulfur or other contaminants, can reduce catalyst activity and longevity over time. Strategies to mitigate catalyst deactivation include optimizing reaction conditions, employing catalyst regeneration techniques, and developing more robust catalyst formulations.
How does a steam reforming catalyst work? A steam reforming catalyst works by facilitating the chemical reaction between steam (H2O) and hydrocarbons, typically methane (CH4), to produce synthesis gas (syngas) consisting of hydrogen (H2) and carbon monoxide (CO). This process, known as steam reforming or steam methane reforming (SMR), occurs at high temperatures and in the presence of a catalyst, often nickel-based catalyst.The catalyst promotes the breaking of carbon-hydrogen bonds in the methane molecule, allowing hydrogen atoms to combine with steam to form hydrogen gas (H2) and carbon atoms to react with oxygen to form carbon monoxide (CO). This reaction is highly endothermic, requiring a significant input of heat to drive it forward.The steam reforming catalyst enhances the efficiency of the reaction by providing active sites where the methane molecules can adsorb, dissociate, and react with steam. Additionally, the catalyst helps prevent unwanted side reactions and the formation of carbon deposits (coking) on the catalyst surface, which can deactivate the catalyst over time.Overall, the steam reforming catalyst plays a crucial role in the production of hydrogen and syngas, which are essential feedstocks for various industrial processes, including ammonia synthesis, methanol production, and hydrocarbon processing.
Can steam reforming catalysts operate under low and high pressure conditions? Yes, steam reforming catalysts can operate under both low-pressure and high-pressure conditions. The choice between low-pressure and high-pressure operation depends on various factors, including the specific requirements of the steam reforming process, the desired production output, and the equipment design. While low-pressure operation may be suitable for certain applications where efficiency is prioritized over production volume, high-pressure operation is often favored for large-scale industrial processes requiring higher production rates. Ultimately, the selection of pressure conditions is tailored to meet the specific needs and objectives of the steam reforming operation.