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Asahi Glassplant, Inc.

Reaction Unit "Gold Label"

Reaction Unit

Product line-up

Gold label

This product line provides solutions advanced users whose demands are more specific and detailed; such as sizes, positions, orientations,combinations, etc.

Platinum label

This is the prestigious series of our products. This label not only provides the product itself, but also provides total service and care to construct ideal equipment according to customers' requests. The service includes process calculations, consultations, design, etc.

Blue label

This is our answer to the basic needs of glassware users. Designs and specifications of this product line are predetermined by AG! for those who wish to carry out carefree experiments. Equipment configuration can be chosen in pick-and-mix style from a vast list of our standard parts. e.g. Bench-top reaction unit, Laboratory-scale distillation unit, Rotary evaporator, etc.

Effective experimental tool

The various vessel sizes and optional parts

Asahi reactor - Gold label - is suitable for experiments with higher demands for speed, precision, and efficiency. You can set up the equipment to carry out various chemical processes to satisfy your needs flexibly under challenging circumstances.

Reaction Unit

Minimizing the risk of scale-up problem

Similar shape of vessel with mass production scale

AG! reaction vessels are designed to have similar shapes as those used in mass-productions. We believe that the similarity in shape will facilitate the scale-up stage of your research. Our re-sizing technique enables small reaction vessels for experiments to have ratios between vessel diameter and reaction mixture depth similar to that of very large reactors for manufacturing. Also, unlike many glass reaction vessels, which have hemispherical bottoms, AG! reaction vessels have the bottom curvature similar to that of production-scale reactors. Hence, fluid dynamics of liquids in AG! vessels and in huge reactors would also be similar regardless of their sizes,and process conditions can be simulated with precision.

Our re-sizing technique

AG! has developed a re-sizing technique to control diameter and wall-thickness of glass tubes, which gives us more freedom in responding to a wide variety of customers' requests.

D/H ratio for similar fluid dynamics and uniform mixture

D/H ratio for uniform mixture

Because of our re-sizing technique, the ratio between vessel diameter and effective height (D/H ratio) of our reaction vessel is designed to fall in the range of 1:1 to 1:1.5. It is not difficult to imagine that liquids mix more easily and quickly in a broad and short vessel than a thin and long one. If vessel height is very tall with respect to diameter,there may occur a concentration difference at the top and the bottom of the vessel, especially when there are heavy solid materials in the liquid, such as metal catalysts. In such cases, reactions may not proceed quickly, and/or may yield less product.

Effective temperature control

When a temperature control unit is controlling the temperature of reaction mixture in jacketed vessels, it is in fact heating up / cooling down not only the reaction mixture, but also the jacketed vessel itself, the heat transfer fluid (HTF) in the jacket, the pipes/hoses, and the surrounding atmosphere. With our re-sizing technique, we are able to fabricate reaction vessels to minimize the amount of required HTF in the jacket by using a narrower jacket, and to maximize the vessel performance by using various wall thickness at different parts of the vessels. Now, our vessels are more efficient using less energy.

Selection Table

AG! offers the widest variety of reaction vessels for users to choose from according to reaction conditions. The table below illustrates some of the most commonly used reaction vessels.

Triple-walled with Ring Baffle The flagship model of AG! reaction vessels consisting of all state-of-the-art AG! technologies: Ring Baffle, minimum HTF jacket volume, vacuum jacket, ID/H ratio, minimum dead space,detachable flush valve, detachable hose connector. This is the best glass reaction vessel in the world.
Double-Walled with Ring Baffle The AG! reaction vessels with most of unique and advanced features of AG! technologies (except for the vacuum jacket): ring baffle,minimum HTF jacket volume, vacuum jacket, ID/H ratio,minimum,detachable flush valve, dead space, detachable hose connector.
Tripple-walled without Ring Baffle Equivalent to conventional jacketed reaction vessel with AG! quality:minimum HTF jacket volume, vacuum jacket, ID/H ratio, minimum dead space, detachable flush valve, detachable hose connector.
Fully Jacketed with Ring Baffle HTF jacket is extended to the top flange of vessel to eliminate thermally uncontrolled areas.
Double wall with conical bottom (with / without Ring Baffle) For highly viscous reaction mixtures, the bottom of the vessel is designed in a conical shape.
Pressure reaction vessel Able to hold internal positive pressure up to 12 bar (500ml, 1L), or 6 bar (1.5L).
Ag-plated vessels Inner wall of vacuum jacket can be plated with silver.
Inner agitation baffle For better mixing, baffles can be integrated inside our reaction vessels.

Customized Designs

Although we offer the widest selection of reaction vessels, there are needs for new designs to meet the specific requirements of creative chemists. In fact, the variety in our vessel selection is the result of responding to specific requirements of researchers across numerous industries for over 60 years, and we continue this tradition.

1. Vessel design

Our re-sizing technique enables us to design not only volume, diameter, and height of vessels, but also wall thicknesses, jacket capacities, jacketed parts, and more.

Vessel Design Capabilities

a … Dimensions(Volume, Diameter, Height, etc.)
b … Wall thickness(Balance of Thermal/Mechanical Properties)
c … Jacket(Double-walled, Triple-walled, Jacket Extension, Jacket Capacity, etc.)

We also provide flexibility in

a … Position, angle, and type of ports(HTF inlet/outlet, etc.)
b … Bottom shape design(AG! standard, Spherical, Conical, Flat, etc.)
c … Drain design(minimum dead space, shaft materials, etc.)

We understand that certain information about vessel design is sometimes confidential. We are willing to arrange and sign a non-disclosure agreement (NDA) upon customers' request to keep sensitive information secure.

2. Parts design

Vessel covers are most frequently modified upon customer's requests. Modifications of vessel cover commonly involve number of ports, and size/angle/connection type of each port. The Vessel cover is not the only part we modify. In fact, 98% of orders involve some kind of modification, and whether modification is major or minor, we usually deliver. We have a high level of processing technique to respond to the various demands of all customers, which could contribute to make any customers' idea become a reality.

3. System Configuration

Other than reaction vessel, our product line-up also includes broad range of accessories for reaction unit: condensers, dropping funnels, stirrers, stirrer seals, etc. Upon provision of process flow or detailed information, we are happy to make suggestions for configurations of equipment. We are willing to arrange and sign a non-disclosure agreement (NDA), as parts, or all, of your process are confidential.

Process flow for purchasing AG! Products

Application Samples

Polyester Esterification (Process-design by AG!)

Temperature range※ Maximum: + 250°C
                                Minimum: -120°C

Process condition:
Batch process,
24hr automated process
(Automated operations: temperature control,
agitation, material addition)
Viscosity: 2,000 - 10,000cP at 120°C
Sampling period: user-determined
Reflux time: user-determined

※Variable according to customer

Polyester Esterification (Process-design by AG!)

Customized Product

Reaction Unit Plant model

BrookfieldJulaboKonica MinoltaPolyscienceConSpecRay-RanMoisture RegisterAsahi Glassplant, Inc.