{"id":4086,"date":"2025-04-17T11:00:13","date_gmt":"2025-04-17T09:00:13","guid":{"rendered":"https:\/\/friem.com\/en\/blog\/"},"modified":"2025-09-18T11:58:36","modified_gmt":"2025-09-18T09:58:36","slug":"rectifiers-role-industrial-chemistry","status":"publish","type":"post","link":"https:\/\/friem.com\/en\/blog\/rectifiers-role-industrial-chemistry\/","title":{"rendered":"Electrolysis processes for chemical production: the role of rectifiers in industrial chemistry"},"content":{"rendered":"<section class=\"l-section wpb_row us_custom_821ea863 height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><p><span style=\"font-weight: 400;\">Many industries rely on electricity to run most of their chemical processes. Apart from providing power for lighting, it produces essential materials. One of the main ways industries manufacture these everyday substances is through <\/span><b>electrochemical decomposition<\/b><span style=\"font-weight: 400;\">, the process of splitting compounds using electric energy. The products of these reactions, include pure metals, hydrogen gas, and chemicals.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Electrochemical decomposition requires a <\/span><span style=\"color: #ba930b;\"><a style=\"color: #ba930b;\" href=\"https:\/\/friem.com\/en\/our-business\/hydrogen\/hydrogen-solutions\/\"><b><u>stable flow of electricity<\/u><\/b><\/a><\/span><span style=\"font-weight: 400;\">. However, most industries get AC (Alternating Current) power from the grid, which is then converted to DC (Direct Current) power. AC power constantly changes direction, making it unsuitable for electrochemical decomposition. This is where the rectifiers come in. They convert AC to DC energy and control the power passing through them.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Without these crucial components in the circuit, electrorefining would not be possible. The best rectifier systems operate with low energy consumption to improve production while reducing maintenance costs.<\/span><\/p>\n<h2><b>The Role of Electrolysis in Industrial Chemical Production<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The chemical industry relies on electrolysis to <\/span><b>separate compounds using electricity<\/b><span style=\"font-weight: 400;\">. It is vital in extracting valuable elements like caustic soda, hydrogen production, and metal refining.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Chlorine and Caustic<\/span><span style=\"font-weight: 400;\"> Soda<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The chlor-alkali process splits salty water or brine into chlorine gas, caustic soda, and hydrogen gas. Special electrolytic confinements like membrane cells are most commonly used in industries today.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">At the Anode (positive electrode), chlorine ions lose electrons to form chlorine gas.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">2Cl<\/span><span style=\"font-weight: 400;\">&#8211; <\/span><i><span style=\"font-weight: 400;\">\u2192 Cl<\/span><\/i><i><span style=\"font-weight: 400;\">2 <\/span><\/i><i><span style=\"font-weight: 400;\">+ 2e<\/span><\/i><i><span style=\"font-weight: 400;\">&#8211;<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">At the negative electrode, molecules of water gain electrons, releasing hydrogen gas and hydroxide ions.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">2H<\/span><\/i><i><span style=\"font-weight: 400;\">2<\/span><\/i><i><span style=\"font-weight: 400;\">O + 2e<\/span><\/i><i><span style=\"font-weight: 400;\">&#8211; <\/span><\/i><i><span style=\"font-weight: 400;\">\u2192 H2 + 2OH<\/span><\/i><i><span style=\"font-weight: 400;\">&#8211;<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">The hydroxide ions produced at the cathode react with sodium ions from the brine to form caustic soda or sodium hydroxide.<\/span><\/p>\n<\/div><\/div><div class=\"w-separator size_medium\"><\/div><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_middle type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h3><span style=\"font-weight: 400;\">Hydrogen Production<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The <\/span><b>electrochemical decomposition of water<\/b><span style=\"font-weight: 400;\"> is the most efficient and clean way to produce hydrogen gas with renewable energy. Traditional forms of production, like stream methane reforming (SMR), release carbon dioxide by burning fossil fuels.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>At the Anode: <\/b><span style=\"font-weight: 400;\">Water loses some electrons to form oxygen.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">2H<\/span><\/i><i><span style=\"font-weight: 400;\">2<\/span><\/i><i><span style=\"font-weight: 400;\">O \u2192 O<\/span><\/i><i><span style=\"font-weight: 400;\">2 <\/span><\/i><i><span style=\"font-weight: 400;\">+ 4H<\/span><\/i><i><span style=\"font-weight: 400;\">+ <\/span><\/i><i><span style=\"font-weight: 400;\">+ 4e<\/span><\/i><i><span style=\"font-weight: 400;\">&#8211;<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>At the Cathode: <\/b><span style=\"font-weight: 400;\">Hydrogen ions gain electrons, releasing hydrogen gas.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">4H<\/span><\/i><i><span style=\"font-weight: 400;\">+ <\/span><\/i><i><span style=\"font-weight: 400;\">+ 4e<\/span><\/i><i><span style=\"font-weight: 400;\">&#8211; <\/span><\/i><i><span style=\"font-weight: 400;\">\u2192 2H<\/span><\/i><i><span style=\"font-weight: 400;\">2<\/span><\/i><\/p>\n<\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-image align_none\"><div class=\"w-image-h\"><img decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/friem.com\/wp-content\/uploads\/2025\/03\/produzione-idrogeno-02.webp\" class=\"attachment-large size-large\" alt=\"Molecole di idrogeno verde\" loading=\"lazy\" srcset=\"https:\/\/friem.com\/wp-content\/uploads\/2025\/03\/produzione-idrogeno-02.webp 1000w, https:\/\/friem.com\/wp-content\/uploads\/2025\/03\/produzione-idrogeno-02-300x200.webp 300w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/div><\/div><\/div><div class=\"w-separator size_medium\"><\/div><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_middle type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-image align_none\"><div class=\"w-image-h\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/friem.com\/wp-content\/uploads\/2025\/03\/produzione-allumini-02-1024x1024.webp\" class=\"attachment-large size-large\" alt=\"Primo piano su dei profili di alluminio\" loading=\"lazy\" srcset=\"https:\/\/friem.com\/wp-content\/uploads\/2025\/03\/produzione-allumini-02-1024x1024.webp 1024w, https:\/\/friem.com\/wp-content\/uploads\/2025\/03\/produzione-allumini-02-300x300.webp 300w, https:\/\/friem.com\/wp-content\/uploads\/2025\/03\/produzione-allumini-02-150x150.webp 150w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h3><span style=\"font-weight: 400;\">Aluminum Prod<\/span><span style=\"font-weight: 400;\">uction<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Industries extract aluminum using the <\/span><b>Hall-Heroult process<\/b><span style=\"font-weight: 400;\">, which involves electro-refining molten aluminum oxide (Al<\/span><span style=\"font-weight: 400;\">2<\/span><span style=\"font-weight: 400;\">O<\/span><span style=\"font-weight: 400;\">3<\/span><span style=\"font-weight: 400;\">) mixed with cryolite (Na<\/span><span style=\"font-weight: 400;\">3<\/span><span style=\"font-weight: 400;\">AIF<\/span><span style=\"font-weight: 400;\">6<\/span><span style=\"font-weight: 400;\">) to lower its melting point. This step requires a lot of electricity and is how most of the world&#8217;s aluminum is made.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Aluminum ions gain electrons at the negative electrode to form liquid aluminum at the bottom.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">Al<\/span><\/i><i><span style=\"font-weight: 400;\">3+<\/span><\/i><i><span style=\"font-weight: 400;\"> +3e<\/span><\/i><i><span style=\"font-weight: 400;\"> \u2212<\/span><\/i><i><span style=\"font-weight: 400;\"> \u2192Al<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Oxygen ions lose electrons at the positive electrode to form oxygen gas. The gas then reacts with the carbon anodes to release carbon dioxide gas.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">2O<\/span><\/i><i><span style=\"font-weight: 400;\">2\u2212<\/span><\/i><i><span style=\"font-weight: 400;\">\u2192 O<\/span><\/i><i><span style=\"font-weight: 400;\"> 2<\/span><\/i><i><span style=\"font-weight: 400;\"> + 4e\u2212<\/span><\/i><\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"w-separator size_medium\"><\/div><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_middle type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h3><span style=\"font-weight: 400;\">Electrochemical <\/span><span style=\"font-weight: 400;\">Metal Refining<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Most metals, like copper, silver, and gold, are purified through electrorefining. The process <\/span><b>removes impurities from metal<\/b><span style=\"font-weight: 400;\"> by adding it to a solution with two electrodes. When high power is supplied, pure metal is deposited on one of the electrodes while the other removes the impurities.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>At the Anode (Impure copper)<\/b><span style=\"font-weight: 400;\">: Copper dissolves into the solution as copper ions.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">Cu \u2192 Cu<\/span><\/i><i><span style=\"font-weight: 400;\">2+ <\/span><\/i><i><span style=\"font-weight: 400;\">+\u00a0 2e<\/span><\/i><i><span style=\"font-weight: 400;\">&#8211;<\/span><\/i><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>At the Cathode (Pure copper sheet):<\/b><span style=\"font-weight: 400;\"> The copper ions gain an electron to form solid copper.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">Cu<\/span><\/i><i><span style=\"font-weight: 400;\">2+ <\/span><\/i><i><span style=\"font-weight: 400;\">+\u00a0 2e<\/span><\/i><i><span style=\"font-weight: 400;\">&#8211; <\/span><\/i><i><span style=\"font-weight: 400;\">\u2192 Cu<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">The impurities collected at the anode can be particles of gold, silver, or other metals. This can also be collected and processed.<\/span><\/p>\n<\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-image align_none\"><div class=\"w-image-h\"><img decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/friem.com\/wp-content\/uploads\/2025\/03\/raffinazione-metalli.webp\" class=\"attachment-large size-large\" alt=\"Primo piano sul metallo grezzo\" loading=\"lazy\" srcset=\"https:\/\/friem.com\/wp-content\/uploads\/2025\/03\/raffinazione-metalli.webp 1000w, https:\/\/friem.com\/wp-content\/uploads\/2025\/03\/raffinazione-metalli-300x300.webp 300w, https:\/\/friem.com\/wp-content\/uploads\/2025\/03\/raffinazione-metalli-150x150.webp 150w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/div><\/div><\/div><div class=\"w-separator size_medium\"><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h2><b>Why Rectifiers Are Essential in Electrolysis<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Although rectifiers mainly convert AC to DC, their benefits extend beyond this functionality. They help manage power fluctuations to ensure optimal conditions for chemical reactions. This section highlights why <\/span><b>converters and rectifiers<\/b><span style=\"font-weight: 400;\"> are vital in electrochemical decomposition.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Conversion of AC to DC for Electrolysis<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Electrochemical decomposition is only possible with DC. However, most of the power in the supply grid is AC, which is unsuitable for the chemical reaction. A rectifier converts AC into DC by ensuring a <\/span><b>continuous electrical supply<\/b><span style=\"font-weight: 400;\">. With AC power, the fluctuating current would disrupt the movement of ions.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Voltage and Current Regulation<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">As explained above, each electrolysis process requires a specific amount of power to operate optimally. Low voltages may not initiate the reaction, while high power might lead to overheating and damage to the equipment. Rectifiers stabilize the power supply by <\/span><b>controlling the current and voltage<\/b><span style=\"font-weight: 400;\"> running through the system. Proper regulation ensures improved quality and prevents power wastage.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Energy Efficiency and Cost Reduction<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Industries spend much money on electricity, especially in processes like electrorefining. If equipment wastes this valuable resource, it can lead to high operational costs. Converters and Rectifiers <\/span><b>optimize power consumption<\/b><span style=\"font-weight: 400;\"> by allowing only the required electricity to pass through. Efficiency also reduces environmental impact because less energy goes to waste.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Reducing Harmonic Distortion and Electrical Noise<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Irregular fluctuations of power in an electrical system can produce Harmonic distortions. This electrical noise can lead to unstable reactions or inconsistent product quality during electrochemical decomposition. Properly designed Rectifiers smooth out these distortions and also <\/span><b>prevent interference from other nearby equipment<\/b><span style=\"font-weight: 400;\">. Less noise or distortions ensure reliable and efficient electrolysis.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Extending Equipment Lifespan and Reducing Maintenance<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The equipment used for electrorefining processes is expensive and requires frequent repairs or replacements. An unstable electrical supply can damage or affect electrical circuits, electrodes, and cables. Rectifiers prevent fluctuation or sudden voltage spikes to help reduce wear and tear. With proper converters and rectifiers, industries can <\/span><b>avoid unnecessary downtime<\/b><span style=\"font-weight: 400;\"> and focus on the critical bits.<\/span><\/p>\n<\/div><\/div><div class=\"w-separator size_medium\"><\/div><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_middle type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h2><b>Types of Rectifiers Used in Industrial Electrolysis<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Here are the different types of <\/span><span style=\"color: #ba930b;\"><a style=\"color: #ba930b;\" href=\"https:\/\/friem.com\/en\/our-business\/industry\/\"><span style=\"font-weight: 400;\"><u>rectifiers used in industrial electrorefining<\/u><\/span><\/a><\/span><span style=\"font-weight: 400;\">, depending on the electrolyzer&#8217;s specific needs.<\/span><\/p>\n<\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-image align_none\"><div class=\"w-image-h\"><img decoding=\"async\" width=\"1024\" height=\"724\" src=\"https:\/\/friem.com\/wp-content\/uploads\/2025\/02\/HyRec-Scale-1024x724.png\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/friem.com\/wp-content\/uploads\/2025\/02\/HyRec-Scale-1024x724.png 1024w, https:\/\/friem.com\/wp-content\/uploads\/2025\/02\/HyRec-Scale-300x212.png 300w, https:\/\/friem.com\/wp-content\/uploads\/2025\/02\/HyRec-Scale.png 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/div><\/div><\/div><\/div><\/div><div class=\"w-separator size_medium\"><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h3><span style=\"font-weight: 400;\">Thyristor-Based Rectifiers (SCR Rectifiers)<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">These rectifiers use Silicon-Controlled Rectifiers (SCRs) or thyristors to convert AC to DC. The process starts with AC from the power supply and then goes through the SRCs, which act as gates. These thyristors only allow current to pass when a \u2018trigger\u2019 is given. A signal to the trigger can control the DC voltage output.<\/span><\/p>\n<p><b>FRIEM\u2019s HyRec Scale<\/b><span style=\"font-weight: 400;\"> is an industrial rectifier developed using thyristor technology. A unit can power multiple electrolyzers with up to 60 MVA per PSU. Developed from the core functionalities of chlor-alkali systems, it is mainly used to power alkaline electrolyzers.<\/span><\/p>\n<h4><span style=\"font-weight: 400;\">Features<\/span><\/h4>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Good current and voltage control &#8211; <\/b><span style=\"font-weight: 400;\">By controlling<\/span> <span style=\"font-weight: 400;\">when the gates allow current to pass, the amount of power that goes through the electrochemical decomposition process can be controlled.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Supports efficently High Power &#8211; <\/b><span style=\"font-weight: 400;\">Thyristors can withstand thousands of volts and amps during operation, making them ideal for heavy-duty operations like metal extraction and hydrogen production.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Reliable &#8211; <\/b><span style=\"font-weight: 400;\">Besides being able to work under high power, thyristors are rugged, allowing them to operate for long periods in harsh environments.<\/span><\/li>\n<\/ul>\n<\/div><\/div><div class=\"w-separator size_medium\"><\/div><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_middle type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h3><span style=\"font-weight: 400;\">IGBT-Based Rectifiers<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Insulated Gate Bipolar Transistors (IGBT) have fast electronic switches that convert AC to DC power automatically. When AC power comes in, it is converted to high-frequency pulses using the IGBT switches, which rapidly turn on and off. Special circuits with various types of capacitors and inductors smooth out the fluctuations.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The HyCon Station from FRIEM is a multi-level IGBT inverter technology offering solutions for <\/span><b>industrial chemistry<\/b><span style=\"font-weight: 400;\"> environments. It is built with a forced-air cooling system for optimal outdoor performance. The unit also has AFE technology, which enables high-performance power conversion without the need for additional filters.<\/span><\/p>\n<\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-image align_none\"><div class=\"w-image-h\"><img decoding=\"async\" width=\"1024\" height=\"725\" src=\"https:\/\/friem.com\/wp-content\/uploads\/2024\/07\/HYCON75_STATION_3MW-1024x725.png\" class=\"attachment-large size-large\" alt=\"Modulo di conversione energetica FRIEM in struttura metallica, con componenti di ventilazione e dissipazione del calore\" loading=\"lazy\" srcset=\"https:\/\/friem.com\/wp-content\/uploads\/2024\/07\/HYCON75_STATION_3MW-1024x725.png 1024w, https:\/\/friem.com\/wp-content\/uploads\/2024\/07\/HYCON75_STATION_3MW-300x212.png 300w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/div><\/div><\/div><\/div><div class=\"w-separator size_medium\"><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h4><span style=\"font-weight: 400;\">Features<\/span><\/h4>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Power Quality<\/b><span style=\"font-weight: 400;\"> &#8211; IGBT-based rectifiers generate less Harmonic distortion and because of the high-frequency switching and internal filtering systems. This allows to avoid external Harmonic Filters or Power Factor Improvement Systems to improve the power quality.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Lightweight and Compact &#8211; <\/b><span style=\"font-weight: 400;\">The rectifiers do not need a huge transformer or additional equipment for Power Quality improvement during operation. Most IGBT-based rectifiers systems are lightweight and compact.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Stable DC output \u2013 <\/b><span style=\"font-weight: 400;\">Thanks to the High frequency and integrated\u00a0 circuits, the IGBT-based rectifier\u00a0 can smooth the current to provide a low ripple on the output voltage. The rectifiers are, therefore, ideal for high-precision electrorefining and battery charging in <\/span><b>industrial chemistry<\/b><span style=\"font-weight: 400;\"> applications.<\/span><\/li>\n<\/ul>\n<\/div><\/div><div class=\"w-separator size_medium\"><\/div><div class=\"g-cols wpb_row via_grid cols_2 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_middle type_default stacking_default\" style=\"--columns-gap:3rem;\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h3><span style=\"font-weight: 400;\">Multi-Pulse Rectifiers<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">As the name suggests, this type of rectifier has multiple sets of rectifiers that convert AC power to a more stable DC. It starts by taking power from a three-phase supply and then passes it through a set of diodes or thyristors arranged in parallel. Each set processes a different part of the AC cycle, and the more pulses (6, 12, 24, &#8230;), the smoother the DC output.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">FRIEM\u2019s HyRec Station is a multi-pulse rectifier built with SCR technology. The power station has 6\/12 pulses per unit, which can be expanded to multiple units. It provides high DC while keeping its environmental footprint compact. Another station with multi-pulse rectifiers is the Hydue Station with 12 pulses.<\/span><\/p>\n<\/div><\/div><\/div><\/div><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-image align_none\"><div class=\"w-image-h\"><img decoding=\"async\" width=\"1024\" height=\"724\" src=\"https:\/\/friem.com\/wp-content\/uploads\/2025\/02\/FRIEM-HyRec-1024x724.webp\" class=\"attachment-large size-large\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/friem.com\/wp-content\/uploads\/2025\/02\/FRIEM-HyRec-1024x724.webp 1024w, https:\/\/friem.com\/wp-content\/uploads\/2025\/02\/FRIEM-HyRec-300x212.webp 300w, https:\/\/friem.com\/wp-content\/uploads\/2025\/02\/FRIEM-HyRec.webp 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/div><\/div><\/div><\/div><\/div><div class=\"w-separator size_medium\"><\/div><div class=\"wpb_text_column\"><div class=\"wpb_wrapper\"><h4><span style=\"font-weight: 400;\">Features<\/span><\/h4>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Less Harmonic Distortions &#8211; <\/b><span style=\"font-weight: 400;\">The multiple bridges in these rectifiers receive AC voltage through phase shifting. This causes the harmonics generated to cancel out, reducing distortions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Steady DC Output &#8211; <\/b><span style=\"font-weight: 400;\">Multi-pulse rectifiers with more pulses reduce the ripple or fluctuation in the DC output. This ensures a constant power output, which is better for most industrial electrochemical decomposition processes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Handles High-Power Loads &#8211; <\/b><span style=\"font-weight: 400;\">Multi-pulse rectifiers handle more power than the other two types of rectifiers in this list.<\/span> <span style=\"font-weight: 400;\">They are suitable for electrochemical decomposition plants that require megawatts of power during operations.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">FRIEM has developed several types of rectifiers for different purposes and industries. These pieces of equipment offer reliable performance in various environments. However, individual requirements are crucial for the perfect electrorefining power rectifiers.<\/span><\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"<p>Electrolysis is a vital process in industrial chemistry. Since it requires a stable DC power supply, rectifiers play a crucial role by converting AC from the grid into DC, ensuring efficiency, stability, and energy savings.<\/p>\n","protected":false},"author":4,"featured_media":4080,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[51],"tags":[],"class_list":["post-4086","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry"],"acf":[],"_links":{"self":[{"href":"https:\/\/friem.com\/en\/wp-json\/wp\/v2\/posts\/4086","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/friem.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/friem.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/friem.com\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/friem.com\/en\/wp-json\/wp\/v2\/comments?post=4086"}],"version-history":[{"count":6,"href":"https:\/\/friem.com\/en\/wp-json\/wp\/v2\/posts\/4086\/revisions"}],"predecessor-version":[{"id":4095,"href":"https:\/\/friem.com\/en\/wp-json\/wp\/v2\/posts\/4086\/revisions\/4095"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/friem.com\/en\/wp-json\/wp\/v2\/media\/4080"}],"wp:attachment":[{"href":"https:\/\/friem.com\/en\/wp-json\/wp\/v2\/media?parent=4086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/friem.com\/en\/wp-json\/wp\/v2\/categories?post=4086"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/friem.com\/en\/wp-json\/wp\/v2\/tags?post=4086"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}