関西化学機械製作 List of Products and Services

The process of recovering clean solvent from the cleaning solvent is essential for distillation operations. However, it has been a common understanding in the industry that with conventional stirring blades, as the liquid level decreases, the heat transfer area also reduces, leading to a drop in evaporation efficiency and longer evaporation times. The heat transfer enhancement device "Wall Wetter," developed in response to customer feedback, lifts the liquid remaining at the bottom of the evaporation can using centrifugal force and disperses it onto the heating surface, allowing for effective utilization of heat transfer areas that would normally be unusable. This enables maximum utilization of the heat transfer area and allows for constant evaporation rates regardless of the liquid volume in the evaporation can. [Example of Technical Data Publication: Time Reduction Example with Wall Wetter (1)] (Device Capacity: 10m3, Charge Capacity: 8m3, Toluene Evaporation Example) ■ Comparison of Required Evaporation Time ■ Time Reduction Rate with Wall Wetter ■ Explanation using physical properties, structural variables, and operational variables *For more details, please download the catalog or contact us.

The process of recovering clean solvent from the cleaning solvent is essential for distillation operations. However, it has been a common understanding in the industry that with conventional stirring blades, as the liquid level decreases, the heat transfer area also reduces, leading to decreased evaporation efficiency and longer evaporation times. The heat transfer enhancement device "Wall Wetter," developed in response to customer feedback, lifts the liquid remaining at the bottom of the evaporation can using centrifugal force and sprays it onto the heating surface, effectively utilizing heat transfer areas that would normally be unusable. 【Features】 - Lifts the liquid remaining at the bottom of the evaporation can using centrifugal force, sprays it onto the heating surface, and promotes evaporation through the wet wall effect! - The heat transfer area remains constant from the beginning to the end of the distillation, allowing for maximum utilization! - Even boiling liquids become a thin film flow, increasing the heat transfer coefficient! - The heat transfer area can be maximally utilized, allowing for a constant evaporation rate regardless of the liquid volume in the evaporation can! *For more details, please download the catalog or contact us.

The development of multi-component solvent recovery systems and their processes, utilizing various separation techniques such as evaporation, distillation, filtration, extraction, and absorption, is our area of expertise. We have a track record of delivering hundreds of solvent purification and recovery plants. As a purification and recovery system, we provide optimal designs through combinations of evaporation, distillation, and membrane separation. From the planning stage of the plant to process design, construction, and after-sales service, we offer meticulous service through excellent teamwork. For more details, please download the catalog or contact us.

The basic function of the change tray is a system that instantly switches between tray state and baffle state. Additionally, it has the capability to control the pressure loss of the tray from the outside and adjust the flow rate. The "Change Tray Distillation Tower System" enables energy savings and reduction of operating time for batch distillation operations using the change tray. After extracting component A, it is possible to extract the intermediate cut liquid in one go by changing from tray state to baffle state. *For more details, please download the catalog or contact us.*

The process of recovering clean solvent from the cleaning solvent is essential for distillation operations. However, it has been a common understanding in the industry that with conventional turbine blades, as the liquid level decreases, the heat transfer area also reduces, leading to a drop in evaporation efficiency and longer evaporation times. In response to customer feedback, the heat transfer enhancement device "Wall Wetter" was developed. It lifts the liquid remaining at the bottom of the evaporation can using centrifugal force and disperses it onto the heating surface, effectively utilizing heat transfer areas that would normally be unusable. This allows for maximum utilization of the heat transfer area, enabling a constant evaporation rate during operation. *For more details, please download the catalog or contact us.*

Kansai Chemical conducts plant engineering for processes such as distillation, evaporation, refining, reaction, fermentation, extraction, and solvent recovery. I will explain the "mechanism of how laundry dries." On rainy days during the rainy season, laundry is difficult to dry. On sunny summer days, it dries easily. This is due to the difference in the amount of moisture in the air (humidity). However, the total number of air molecules (the amount of air) and water molecules (the amount of moisture) in the atmosphere is almost equal. The number of water molecules in the atmosphere increases with higher temperatures, and as the number of water molecules increases, the number of air molecules decreases. There is a limit to the number of water molecules that can exist. On winter mornings, you may see water droplets on the window glass. This happens because the room temperature has risen due to heating at night, allowing it to hold a lot of moisture. When morning comes and the temperature drops, it exceeds that limit, resulting in water droplets. During such times, laundry does not dry. *For more details, please refer to the PDF document or feel free to contact us.*

Kansai Chemical conducts plant engineering for distillation, evaporation, refining, reaction, fermentation, extraction, solvent recovery, and more. I will explain about "temperature and vapor pressure." When water boils at 100°C, its vapor pressure is 1,013 hPa. At the summit of Mount Fuji, the atmospheric pressure is said to be approximately 630 hPa. When the water in a pot boils, the water vapor just above the pot displaces all the air, so the vapor pressure of the water is the same as the atmospheric pressure, which is 630 hPa. At this point, the temperature of the boiling water is likely 87°C. At the summit of Mount Everest, the atmospheric pressure is about 300 hPa. The temperature of boiling water here is 69°C. Thus, "the boiling temperature is determined by pressure." In other words, it is a physical property value. In other words, vapor pressure is determined by temperature. *For more details, please refer to the PDF document or feel free to contact us.

Kansai Chemical conducts plant engineering for processes such as distillation, evaporation, refining, reaction, fermentation, extraction, and solvent recovery. I will explain about "atmospheric pressure and boiling point." Most of the atmosphere consists of air and water, and atmospheric pressure is expressed in hectopascals (hPa). In fact, atmospheric pressure is the sum of air pressure and water vapor pressure. In the state before the water in the pot boils, steam initially rises above the pot, and gradually the amount of water vapor increases. The amount of air just above the pot decreases gradually. When boiling occurs, all the air is gone, and it becomes all water vapor. Assuming the atmospheric pressure on that day was 1,013 hPa, the water vapor pressure just above the pot becomes 1,013 hPa since there is no air left, and it consists solely of water vapor. At that time, the temperature of the pot is 100°C. *For more details, please refer to the PDF document or feel free to contact us.*

Kansai Chemical will explain "Humidity and Partial Pressure." The atmosphere is a mixture of air and water, and the ratio of this mixture is humidity. Just above a boiling pot, there is no air, only 100% water vapor. Therefore, the pressure of that water vapor is equal to atmospheric pressure. Most liquids have a vapor pressure determined by temperature, and the vapor pressure of water at 30°C (saturated vapor pressure) is 42 hPa. If the atmospheric pressure on Earth were 42 hPa, water would boil at 30°C. However, the atmospheric pressure at ground level is considered to be an average of 1,013 hPa (neither high pressure nor low pressure). If the water in the pot is at 30°C, then the water vapor just above the surface of the water is 42 hPa, and the air pressure is (1,013 - 42) = 971 hPa. When several components are mixed, the total pressure is called the total pressure, and the pressure exerted by each component (air, water) is called the partial pressure. And this is known as "the total pressure is equal to the sum of the partial pressures (Dalton's Law of Partial Pressures)." *For more details, please refer to the PDF document or feel free to contact us.

Kansai Chemical conducts plant engineering for processes such as distillation, evaporation, refining, reaction, fermentation, extraction, and solvent recovery. This document discusses the "units of concentration used in distillation." In distillation, observing the state at the molecular level allows for a more concrete understanding. The concentration unit expressed as a ratio of the number of molecules is called "mole fraction." This document provides explanations using specific formulas related to mole fraction. [Contents] ■ Units of concentration used in distillation *For more details, please refer to the PDF document or feel free to contact us.

Kansai Chemical will explain "partial pressure and total pressure." When it comes to pressure in distillation operations, it usually refers to the pressure limited on the gas side. Air is primarily composed of nitrogen and oxygen, with nitrogen making up about 80% and oxygen about 20% by volume. (The molar ratio is the same.) Now, let's consider a balloon inflated with air. Inside the balloon, nitrogen and oxygen molecules are moving vigorously. They are colliding violently and uniformly (according to Pascal's principle) against the inner walls of the balloon multiple times. The pressure inside the balloon can be said to be the result of these collision forces. One mole is a collection of 6.022×10^23 molecules, and for all gases, at 0°C and 1 atm, it occupies 22.4 L. This means that the force exerted by a single molecule on the wall during a collision is equal for both nitrogen and oxygen. While we have imagined a lot about gases, an important law regarding the handling of gases in distillation is Dalton's law of partial pressures: "Total pressure P (kPa) = Sum of partial pressures Σpi (kPa)." *For more details, please refer to the PDF document or feel free to contact us.

Kansai Chemical will explain about "ideal gases." An ideal gas is defined as: - "The size of the molecules is negligible (therefore, the molecules do not collide with each other)" - "When colliding with walls, the direction changes but the speed remains the same (elastic collision)" - "There are no interactions between molecules" Based on these assumptions, the laws mainly related to the field of distillation are "Boyle's Law and Charles's Law" and "Dalton's Law of Partial Pressures." While we have imagined many aspects regarding gases, an important law in the handling of gases during distillation is Dalton's Law of Partial Pressures: "Total Pressure P (kPa) = Sum of Partial Pressures Σpi (kPa)." This law is derived from the properties of ideal gases, but it is a sufficiently reliable law within the range used in distillation. *For more details, please refer to the PDF materials or feel free to contact us.*

Kansai Chemical conducts plant engineering for processes such as distillation, evaporation, refining, reaction, fermentation, extraction, and solvent recovery. This document includes information on "Vapor Pressure of Single Component Liquids." All liquids handled in distillation have a vapor pressure determined by temperature. We provide a detailed explanation of the vapor pressure estimation formula, "Antoine Equation," using diagrams for clarity. [Contents] ■ Vapor Pressure of Single Component Liquids *For more details, please refer to the PDF document or feel free to contact us.

Kansai Chemical will explain about "ideal solutions." A solution in which "Raoult's Law" holds is called an ideal solution. The solutions that can be treated as ideal solutions are very limited combinations, such as methanol-ethanol and benzene-toluene, which have similar molecular structures. However, the existence of solutions that behave like ideal solutions is sufficient for understanding the concept of distillation operations when treated as ideal solutions. "Raoult's Law" states that the partial pressure \( p_i \) of a component in the vapor phase is equal to the product of the vapor pressure \( P_i \) of each pure component in the solution and the concentration \( x_i \) (mol-fraction) of that component in the solution. Here, it also relates to the ratio of the number of molecules in the liquid. *For more details, please refer to the PDF document or feel free to contact us.*

The vapor pressure of a mixed solution is determined by the combination of the vapor pressure equations for single components, the "Antoine equation," "Raoult's law," and "Dalton's law of partial pressures." In an ideal solution, all distillation calculations (distillation simulations) can be performed using these three equations and material balance equations. This document includes information on "vapor pressure of mixed solutions (vapor-liquid equilibrium)," as well as "creation of vapor-liquid equilibrium diagrams (X-Y diagrams)" and "boiling point curves, dew point curves." [Contents] ■ Vapor pressure of mixed solutions (vapor-liquid equilibrium) ■ Creation of vapor-liquid equilibrium diagrams (X-Y diagrams) ■ Boiling point curves, dew point curves *For more details, please refer to the PDF document or feel free to contact us.

Kansai Chemical conducts plant engineering for processes such as distillation, evaporation, refining, reaction, fermentation, extraction, and solvent recovery. This document covers "Single Distillation and Material Balance (Continuous Evaporation)." In separation operations, not limited to distillation and evaporation, it is essential to keep material balance in mind. The most important aspects of distillation and evaporation operations are "vapor-liquid equilibrium" and "material balance." This document explains "vapor-liquid equilibrium" and "material balance" using diagrams and graphs. [Contents] ■ Single Distillation and Material Balance (Continuous Evaporation) *For more details, please refer to the PDF document or feel free to contact us.*

Kansai Chemical will explain "Single Evaporation and Material Balance (Batch Evaporation)." After all the raw liquid is charged into the evaporator, evaporation begins. Once the liquid in the kettle reaches a specified amount, heating is stopped, and the remaining liquid in the evaporator is removed. This type of evaporation operation is called batch evaporation. This operation is used when there are many varieties of products to be evaporated or when the amount to be evaporated in a day is small. This distillation method is also referred to as differential distillation, and as the liquid volume in the evaporator decreases, the liquid concentration, the concentration of the evaporating vapor, and the temperature change continuously. Therefore, the material balance equation does not become a uniquely determined equation like that of continuous distillation. *For more details, please refer to the PDF materials or feel free to contact us.

Kansai Chemical conducts plant engineering for processes such as distillation, evaporation, refining, reaction, fermentation, extraction, and solvent recovery. This document covers "The Principles of Distillation and Distillation Equipment." It explains specifically how to "increase concentration by repeatedly evaporating and condensing," using diagrams. Additionally, it provides detailed explanations on "Distillation Columns and Material Balance," "Theoretical Stages and Reflux Ratio," and "Minimum Theoretical Stages and Minimum Reflux Ratio." [Contents] ■ Principles of Distillation and Distillation Equipment ■ Distillation Columns and Material Balance ■ Theoretical Stages and Reflux Ratio ■ Minimum Theoretical Stages and Minimum Reflux Ratio *For more details, please refer to the PDF document or feel free to contact us.

Kansai Chemical conducts plant engineering for processes such as distillation, evaporation, refining, reaction, fermentation, extraction, and solvent recovery. "Distillation" is one of the unit operations for separating liquids that has been used since ancient times, utilizing the difference in boiling points of liquids for separation. This document summarizes the seven fundamental aspects of this separation operation. [Contents (excerpt)] - Each pure liquid has a vapor pressure determined by temperature. - In distillation operations, many laws are based on molecular units, with the unit being moles. - The vapor pressure (partial pressure) from a mixed liquid can be determined using Raoult's law. - There is an equilibrium relationship between the liquid phase concentration and the gas phase concentration in a mixed liquid. - The concentration of low-boiling components in a mixed liquid increases each time evaporation and condensation occur, among other points. *For more details, please refer to the PDF document or feel free to contact us.

Distillation is "one of the unit operations related to the separation of liquids that have been used since ancient times, utilizing the difference in boiling points for separation." This document provides a clear explanation of the fundamental knowledge necessary to understand distillation, distillation columns, and distillation equipment, including "the differences from evaporation" and "the differences from boiling." 【Contents (excerpt)】 ■ What is distillation (introduction) ■ Units of concentration used in distillation ■ Gases and pressure ■ Vapor pressure of single-component liquids ■ Principles of distillation and distillation equipment, etc. *For more details, please refer to the PDF document or feel free to contact us.

This document is a technical book that unifies fluid mechanics, thermodynamics, heat transfer engineering, and mass transfer engineering from the perspective of process engineers who emphasize modeling. It provides detailed explanations from concepts and definitions to the application of differential transport equations. It also includes numerous examples, making it a useful reference. We encourage you to read it. [Contents (excerpt)] ■ Introduction ■ Fundamental laws regarding the transport of momentum, energy, and mass ■ Viscous flow (laminar and turbulent) ■ Macroscopic balance: Control volume method ■ Microscopic balance: Differential balance ■ Application of differential transport equations *For more details, please refer to the PDF document or feel free to contact us.

Kansai Chemical Machinery Manufacturing Co., Ltd. will be exhibiting at the "Sustainable Plant EXPO 2024" held at Tokyo Big Sight. This exhibition aims to promote the resolution of challenges for sustainable plant operations and the further dissemination and development of technologies and products that contribute to the effective use of energy resources. We will explain the features of our developed products, including the new products "WW Mixer" and "Chakkari-kun," and guide you to products that meet your needs. We sincerely look forward to your visit. 【Event Overview (Partial)】 ■ Dates: July 24 (Wed) - 26 (Fri), 2024, 10:00 - 17:00 ■ Venue: Tokyo Big Sight, East Hall 7 ■ Admission Method: Complete pre-registration required ■ Admission Registration Fee: Free *For more details, please refer to the PDF document or feel free to contact us.