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1 Products availableOur Complete range of products are Nitric Acid Manufacturing Plant, Bromine Recovery, emergency safety kit, exotic metal exchangers and nitric acid plant.
Nitric Acid Concentration
Concentrated Nitric Acid CNA ( i.e. high-strength nitric acid at 98 -99% w/w.) is an important chemical for Chemical & Pharmaceutical industries in general (like polymers & plastics, dyestuff, bulk drugs, explosives, Fertilizers and other important organic nitro-compounds). This acid is frequently used as "nitrating acid". Industrially manufactured Nitric acid is obtained as a weak acid solution, at a concentration of about 65% -67% w/w (max.), which is of no use whatsoever for the various processes stated above, Owing to the physical behaviour of the nrtric acid / water system, it is not possible to remove excess water from this weak acid by a fractional distillation process because this solution forms an azeotrope, a constant acid / water boiling composition at about 68% w/w. acid. To concentrate this acid further an extractive distillation process by adding concentrated sulphuric acid needs to be employed. While the water goes this sulphuric acid gets diluted, which can be again re-concentrated and reused for the concentration of dilute nitric acid again. Reconcentration of weak Sulphuric Acid The dilute sulphuric acid stream coming off the bottom of the Extractive Distillation Column is reconcentrated back to the same service by using BVR's sulphuric acid re-concentration plant, which can be coupled directly with the nitric acid concentration system so that no cooling of the weak sulphuric acid is necessary, thus saving a large amount of heating energy for the economical benefit of the user. NOx Absorption The NOx gases escaping from the Nitric acid Concentration System, along with bleaching air, are absored in BVR's special NOx absorption plant and is recycled back into the main system as an aqueous solution of nitric acid, at concentration comparable to those of the nrtric acid feed to the same System : the residual gases vented to the atmosphere have NOx. content below the acceptable values as per environmental norms. Pre-concentration of weak Nitric Acid solution Whenever a solution of Nitric Acid is too weak for direct Extractive Distillation (typically below 45% -50% w/w.), it can be pre-concentrated to its azeotropic grade by our vacuum Fractional Distillation plant.
Technology development, engineering and turnkey solutions for chemical recovery from Industrial liquid and gaseous effluents.
Turnkey projects for standard chemical manufacturing plants like Sulphuric, Nitric, Hydrochloric acid, Nitrates, Sulphates and other allied chemicals.
Corrosion resistant Equipment & Plants made up of SS, Borosilicate 3.3 glass, Fluoropolymers & Exotic Metals (Ta, Ti, etc). Design, Engineering, Fabrication , Installation, Commissioning, Project management, Turnkey project execution.
BASIC ENGINEERING - Mass and energy balances, Process flow diagram (PFD), Preliminary layout of the plant other apparatus and equipment specifications
DETAIL ENGINEERING - P&ID, General arrangement drawing, E&I Specifications
PROJECT MANAGEMENT- Scheduling, Resource management, Interface Management, Control
INSTALLATION & COMMISSIONING – Construction management, Loop Check, Test run, Performance Test & Trouble-shooting
BVR Provides complete turnkey solutions for the manufacturing plant projects of Nitric acid from Ammonia & allied products.
Our services include preparation of preliminary estimation, pre-feasibility reports, DPR, Plant technology, know-how, basic & detail engineering, project execution, procurement, fabrication, erection supervision and plant commissioning.
Bromine can be recovered from two sources
BVR offers turnkey projects for the recovery of Bromine from both the aforesaid sources.
Two processes are generally adopted for the recovery of Bromine from Sea/ Salt Bittern as mentioned below:
Steaming Out Process (Hot Process)
The process is also known as “Hot Process” because chlorination of bittern is done with simultaneous steam blowing by means of live steam to heat the bittern to near its boiling point to set free the finished product Bromine.
Air Blowing Process (Cold Process)
This process is known as “Cold Process” because the finished product Bromine is set free from bittern by chlorination and air blowing under cold conditions.
Mixer-Settler Extraction Unit
The Mixer-settler system is fabricated and assembled in a compact modular design. The mixer as well as the settler are both integrated together instead of being separate entities. This allows the system to be compact and ideal for laboratory and R&D usage. A single stage of Mixer-Settler consists of a mixing zone and settler decanting zone connected to each other through a Weir zone.
A brief description of the zones is as follows :
Mixing SystemThe Laboratory mixer consists of a special glass / SS (as per choice) mixing zone, suitable high-speed agitator and a variable speed drive. Besides providing an intimate dispersion the stirrer provides the necessary pumping action. This eliminates the need for external pumps and ensures a large interfacial area for mass transfer. The energy required to produce this dispersion will depend very much on the characteristics of the material and the system used (interfacial tension, viscosity, flow rates, etc). Between the mixing and separation zones, a weir is incorporated to prevent back mixing taking place and maintains the level of liquid in the mixing zone. Besides this, it also acts as a baffle to dampen the flow of liquid into the decanter (settler) for enhancing efficient phase separation. Settling System The settler comprises a horizontal cylindrical pipe which depending upon size may be one or more pipe sections. From the settler, the outlet of the heavy phase, is controlled by an overflow valve. The design of the settler will be influenced by the throughput of both phases and the material physical properties (density difference, viscosity, interfacial tension etc). Multi-Staging Mixer-SettlersDifferent stages can be connected to each other and the interconnecting pipelines can be done as per your required flow logic. The whole assembly would be controlled through a control panel consisting of suitable circuit breaker MCBs, Relays, digital controllers etc.
As a promising name, we bring forth high quality product range that is designed and developed using the best in class raw material and modern work methodologies. Besides, we make sure that the basic material is sourced from the trusted places. With our modern transportation facility, timely and safe deliveries are guaranteed with us.
NOx is the generic name given to Nitrogen Oxides. NOx is generated from many processes including nitration process, for both organic and several inorganic compounds (including a few important metals). This is generated due to the partial degradation of Nitric Acid used in the nitration process, as well as to the final treatment of the "spent" acid. These gases are also formed in the nitration of aromatic compounds (toluene, naphtalenes and many of their derivatives), including the production of practically all types of explosives, in the attack of some relevant metals (like copper, bismuth, etc.), in gold & silver refineries and also in the "Nitric Acid Concentration (NAC)" Plants. BVRs NOx Absorption Plants, uses water or caustic solution as per the need. Proper oxidation of NO is completed for the optimum absorption efficiency with minimal energy consumption. When absorbed with water Nitric acid produced can be re-used for re-use in the main process. Both absorption under atmospheric pressure and higher pressures are possible. At lower pressures the acid concentration is low and so is the absorption efficiency with a higher level of emissions. With Pressurised absorption the acid concentration could reach upto 50%w/w and the emission would be considerable lower too.
We have firmly positioned ourselves as one of the leading Tube Heat Exchanger manufacturers and Exporters based in India. Our Industrial Heat Exchangers are manufactured from glass, SS or exotic metals, SiC (Silicon Carbide), other internals could be of PTFE or other Fluoropolymers. These are suitable for chemical processes with aggressive media. The shell & tube-type heat exchangers with SiC tubes have a number of additional features :
Universal Chemical StabilityBorosilicate glass 3.3, SiC and PTFE, as well as the engineered design makes it efficiently suitable for the chemical and pharmaceutical industry. SiC heat exchangers are suitable for long-term operation as condensers, evaporators or coolers for highly corrosive media and can be used in multi purpose plants or for stand alone applications too.
We render end-to-end Process Design & Engineering Services for Distillation, Extraction, Absorption, Reaction, Separation and other unit operations from Lab to Production scale. Backed by an experienced team of professionals, we have been rendering optimal solutions of Process Design Services. Today, we have carved a niche as one of the reliable providers of Process Design Solutions. Our services include :
Experience in dealing with equipment requirements, automation at lab or plant level, Onsite installation, commissioning and training Specifications Investigation and analysis calculations: pumps, valves, flow meters and temperature/pressure measuring devices. Preparation of documents / manuals / qualification for clients as per protocols and 3Q/4QWe use variety of software to simulate processes, setup and configuration of modeling and control software. Detailed process design PFD, BFD, Mass Balance, preparation of Equipment datasheets, Basis of Safety study â for new product launch- scaling up from Lab to Pilot scale before final production. Heat, Mass balance, HYSYS Simulation, Vessel/Separator, Columns, Pumps, Heat Exchanger sizing & design. Project Management, Process Design, Commissioning, Equipment Maintenance, Process Monitoring, Testing, Validation (as per the standard procedures), Plant Data Monitoring, Process Software Troubleshooting, Maintenance Life Plans, HAZOP, Basis of Safety study , SIL etc. , Awareness of H&S regulations, CDM Regulations, API, BS-EN, European Directive Standards, Awareness - HAZOP Equipment Condition Survey, Capex Plan Estimates
These can be done by three different routes :
General Features
We are accredited for providing faultless array of products. This has become possible owing to the efforts of our quality auditors who strictly check the inputs before procurement. We are backed by a well-structured and capacious storage unit wherein we store the entire lot in a secured manner. Moreover, we ensure complete security of the stored items.
Keeping in-line with the globally accepted standards, the raw material used for production is of high-grade. Thus, we always keep a check on the final product to make sure that the same is defect free. Supported by an advanced transit system, we have become capable of delivering the orders within promised time.
We are widely well reckoned as one of the dominant advance Engineered Systems Suppliers in India. Our Industrial Engineered Systems are manufactured from the genuine quality raw materials under high precision. The complete Custom Engineered Systems offered by us can be assembled as per the customized design of the customers. This complete engineered system is immensely used in various industries for varied applications. Our complete engineered system can be installed very easily and provides excellent performance even under harsh conditions. They are the perfect fusion of impeccable quality and high reliability. Corrosion resistant equipment & assemblies are made up of a combination of Borosilicate 3.3 Glass as per ISO 3585, PTFE, PTFE-lined & Exotic Metals ; designed , fabricated & engineered as per ENBS 1595, AD2000 Merkblatt, GMP, ASME Section VIII Div.1 & TEMA. And are available with - CE Mark ; designed & made in compliance with the relevant directives namely ; PED-97/23/EC, Machine Directive-98/37/EC, LVD-73/23/EEC, EMC Directive-89/336/EEC.
We provide an ample assortment of superlative Corrosion Resistant Heat Exchangers, Glass Heat exchangers, which are highly efficient and durable. We have firmly positioned ourselves as one of the salient Corrosion Resistant Heat Exchangers Suppliers from India. We make them available in wide assortments of choice viz. shell & coil type heat exchangers, immersion heat exchangers, shell & tube heat exchangers, bayonet type heat exchangers and u-tube tubular heat exchangers. Our Cost-Effective Corrosion-Resistant Heat Exchangers are designed to provide quality solution to the requirement of our client. These equipments perform all necessary duties like condensation, cooling, heating, boiling & evaporation. They are manufactured in standard modular designs.
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Liquid extraction, sometimes called solvent extraction, it the separation of a liquid of a liquid solution by contact with another insoluble liquid. The Fully Automatic Solvent Extraction Plant described is for semi-batch operation. The liquid to be extracted is poured into extraction vessel. Solvent is boiled in a reboiler vessel and condensed in an overhead condensed, the condensed liquid in a reflux divider and passing through pipe work to the extraction vessel. The pipe work incorporates valve in order that the solvent can enter the extraction vessel at either the base of the top, depending on the relative density of the solvent and liquid to be extracted. The solvent and the extracted liquid pass back to the reboiler and the process is reputed until the extraction is complete. The extraction vessel is than drained and the solvent evaporated from the reboiler vessel and collected in the extraction vessel enabling the two liquids to be drained from their respective vessel. The Solvent Extraction Plant is available in vessel size upto 500 Ltr. and is suitable for operation under atmosphere pressure and vacuume. Today, we have carved a niche as one of the prime Modular Solvent Extraction Plant Exporters based in India.
The material system hydrogen chloride/water displays a maximum azeotrope at a boiling temperature of 108.6°C, for a system pressure of 1 bar and a HCl concentration of 20.2wt%. If the acid concentration is lower than the azeotrope mixture, the acid can be concentrated only upto the azeotropic point. Further concentration needs special procedures. We have considered the most economical contemporary technology-“Extractive Rectification & Absorption Technology”.
Extractive Rectification & Absorption Technology
As mentioned this is an economical technology and is presented in illustration below the azeotrope point is suppressed as best as possible and increases the relative volatility of HCl. The relative volatility may be impacted by change of the activity coefficients. This is achieved by addition of a third ingredient, the extractive agent, which displays strong hygroscopic properties. Conc. HCL & HCl gas is produced at the head of the extractive rectification column upon choice of an appropriate extraction agent. In the column the extraction agent is diluted with water, which is extracted in a selective fashion from the inflowing mixture. Subsequently, the extractive agent is recycled and newly fed into the extractive rectification process.
Sulphuric acid, and aqueous solutions of CaCl2 are appropriate extraction agents for the concentration of hydrochloric acid.
The removal of VOC from gaseous streams, before they can be vented, and from the liquid / water streams before they can be released are Pollution Control measures. Environmental pollution control has now become more stringent as industries, world wide need to comply with these issues responsibly. The removal of VOC requires competent technology and engineering capabilities, in order to obtain these compounds either for re-use or to release them off to the environment within the acceptable limits. We at BVR work out tailor-made solutions for our clients by studying their discharges (gaseous / liquid). Various unit operations are employed by the use of right technology & engineered systems. In the process many a times besides controlling the discharge composition within the environmental limits, recover a lot of re-usable components that adds to the bottom line of their commercial realisation.
We offer turnkey solutions for absorption of exhaust gases after carrying out detail onsite studies. Our focus is to satisfy the environmental pollution requirement and also try to recover the exhaust gases in such forms so that they can be reused for various processes thus adding to the bottom line. Both Adiabatic absorption and Isothermal Absorption processes are employed in order to get the most efficient output. Please contact us for further discussions if you need us to study your plant.
We are one of the well-reputed manufacturers and exporters of Industrial Pilot Plant, Piloting assemblies, Multipurpose Units / Assemblies & Bioreactors that are multi-purpose modular units having operational flexibility. Our Pilot Plant has been standardized by incorporating all basic & essential functional features such as heating, stirring, condensation, fractionation, cooling etc. for multipurpose use. These units find use in educational institutions, R&D centers and industries. Recovery Pilot Plant can be conveniently and quickly modified according to specific process needs due to modular construction. Borosilicate glass offers additional benefits of universal corrosion resistance, visibility and cleanliness. Besides, these units are also made with SS & other metals. These equipments may be used in simple laboratory scale pilot plant to large commercial scale production for various applications like Distillation, Absorption, Reaction, Evaporation, Mixing, Extraction etc. The corrosion resistant equipments & assemblies are made up of Borosilicate 3.3 Glass as per ISO 3585, designed , fabricated & engineered as per ENBS 1595 , AD2000 Merkblatt, ASME Section VIII Div.1, & TEMA and are available with CE Marking ; designed & made in compliance with the relevant directives namely ; The PED - 97/23/EC, The Machine Directive - 98/37/EC, The European Low Voltage Directive - 73/23/EEC , The EMC Directive - 89/336/EEC. We have a multi-disciplinary engineering team with mechanical, electrical, chemical & instrumentation engineering expertise that enables us to develop your concept to its greatest potential. We design systems so as to customize equipments providing the greatest value and fastest deliveries. We are aware of the latest innovations in hardware, instrumentation, controls & automation software and select components and materials from industry standard suppliers recognized for high quality performance & durability of their products.
Nizampura, Vadodara, Gujarat 
