システムエンジサービス Product Lineup

We would like to introduce a case study of our "Recovery Device (PSA Method)" implemented at a major oil company. The company manufactures petrochemical base products, and as of 2000, the VOC emissions were 820 tons/year. The majority of the VOC emissions were due to the solvent discharge of dichloromethane used in the resin manufacturing process, and in 2002, they introduced our product. Our product uses silica gel as the adsorbent, and the desorption of the adsorbed solvent is performed by vacuum. With two adsorption towers, it alternates between adsorption and desorption, achieving continuous operation and significant reductions. [Reasons for Adoption] - Wide applicable concentration range for the target gas - High removal and recovery rate (over 99%) - No wastewater containing solvents is generated as no steam is used for heating during desorption and regeneration - Using silica gel as the adsorbent helps suppress temperature rise due to adsorption heat - Gradual deterioration, leading to an expected long lifespan *For more details, please refer to the related links or feel free to contact us.

We would like to introduce a case study of our "Pressure Swing Adsorption (PSA) Equipment" implemented at a comprehensive chemical manufacturer. The company had previously been using temperature swing adsorption (TSA) equipment with activated carbon to recover and treat exhaust gases containing vinyl chloride monomer. However, due to the high adsorption heat of activated carbon, they had to process a large volume of diluted gas, resulting in large equipment size and significant energy consumption due to the large amount of steam used during desorption. Additionally, they faced issues with equipment corrosion caused by chlorine. While addressing equipment corrosion, they explored alternative systems and determined that our product could be applied to their process, leading to full-scale operation starting in the 2011 fiscal year. They successfully reduced steam consumption by 3,700 tons compared to the previous year and achieved over a 90% reduction in VCM emissions from the adsorption equipment. [Customer Feedback] ■ We were able to introduce a much more compact exhaust gas treatment system with lower environmental impact. *For more details, please refer to the related links or feel free to contact us.

We will introduce a case of CO2 reduction through VOC recovery. ■Industry: Chemical Plant ■Challenge: The factory was using combustion equipment for exhaust gas treatment. While reducing VOCs, CO2 was being emitted, so we were considering equipment that would have a lower environmental impact and could reduce CO2 emissions as well as the utility costs for the factory. ■Effects: There were three major effects. First, there was a reduction in environmental impact, as VOC concentrations were reduced to below 100 ppm, and CO2 emissions from the previous equipment were eliminated. Second, the elimination of fuel needed for combustion and the power required for blowers used for dilution significantly reduced running costs. Third, the equipment became more compact, improving the company's operations. ■Response: The feature of this system is that it operates in the opposite range of high concentration from low to medium airflow, which is the specialty of combustion equipment. Since we were diluting VOCs to match the combustion equipment, we changed the method to introduce the exhaust gas directly into the silica gel PSA without dilution. *For more details, please feel free to contact us.

We would like to introduce a case study of a "VOC recovery device" that adsorbs VOCs generated within the factory and reduces emissions into the atmosphere for customers considering CO2 reduction. The customer was previously treating VOCs through combustion in their facilities, and the introduction of this device was aimed at reducing environmental impact within the factory and making effective use of resources. After the introduction, the existing combustion device serves as a backup, and VOC treatment in the factory is carried out with this VOC recovery device. This allows for the reduction of fuel and CO2 required during combustion, while also effectively utilizing resources by recovering VOCs in a liquefied form. 【Case Overview】 ■ Unit Composition: Unit including SUS tanks, piping, and framework ■ Industry: Chemical plant ■ Challenge: Achieving both VOC reduction and CO2 reduction ■ Effect: Reduced CO2 emissions from the combustion device and kept VOC emission concentration below 100 ppm, while also enabling the liquefied recovery of VOCs. ■ Response Details: We inquired about the customer's gas conditions, proposed a device tailored to those conditions, and assessed the environmental impact reduction effects along with the usage of utilities. *For more details, please feel free to contact us.

We would like to introduce a case study of the "Activated Carbon Adsorption Tower (VOC Adsorption Tower)" implemented at a chemical plant to adsorb dilute gases generated within the factory and reduce their emission into the atmosphere. Although the gases are dilute and in trace amounts, they are highly toxic, prompting the consideration of implementation for the safety of the working environment and reduction of environmental impact. Therefore, we selected adsorbents based on the gas conditions and designed the system to fit the customer's layout. Additionally, we calculated the timing for adsorbent replacement, making it easier for the customer to plan. After implementation, emissions into the atmosphere were reduced to below 5 ppb, achieving a reduction in environmental impact and ensuring safety in the working environment. 【Case Overview】 ■ Unit Composition: Unit including SUS tank, piping, and framework ■ Industry Implemented: Chemical Plant ■ Challenges: Safety of the working environment and reduction of environmental impact ■ Effect: Emissions into the atmosphere reduced to below 5 ppb ■ Response Details: - Selection of adsorbents based on gas conditions and design tailored to customer layout - Calculation of adsorbent replacement timing *For more details, please feel free to contact us.

We would like to introduce a case study of a VOC treatment system that achieved a concentration of less than 10 ppm through silica gel adsorption for low flow, high concentration exhaust gas temporarily emitted from chemical plant process equipment. The customer had previously used other adsorption systems for VOCs generated from their production process, but the outlet concentration did not decrease as expected, and with stricter regulatory limits, there were concerns about potential penalties in the future. They were considering a system with a high reduction effect. As a result of the implementation, they were able to maintain the designed outlet concentration below 10 ppm, and it has been operating continuously at levels below a few ppm for over three years without change. 【Case Overview】 ■ Challenges and Background Faced by the Customer - They were using other adsorption systems, but the outlet concentration did not decrease as expected. - With stricter regulatory limits, there were concerns about potential penalties in the future. ■ Solution - The outlet gas concentration guarantee was set to below 10 ppm, and the conditions of the emitted gas were discussed. - The system was designed to be appropriate for the emitted gas volume and the available installation site while maintaining the guaranteed concentration. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where we improved the internal work environment using our "activated carbon adsorption system for VOC treatment." The customer had toxic gases that were emitted temporarily rather than continuously, and they were considering methods to reduce these emissions for the safety of the work environment and to lessen environmental impact. After implementation, they were able to keep the outlet concentration below 5 ppb, ensuring both a reduction in environmental impact and the safety of the work environment. [Case Overview] ■ Challenges and Background Faced by the Customer - They were considering methods to reduce emissions for the safety of the work environment and to lessen environmental impact. - They were looking for a more compact solution with lower running costs. ■ Solution - Consideration of the optimal type and necessary amount of activated carbon. - Designed for planned operations. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where silica gel equipment was implemented as an alternative to combustion equipment. The customer was using combustion equipment for exhaust gas treatment within the factory. They were considering equipment that would reduce environmental impact and CO2 emissions while also reducing the utility costs for the factory, as VOC reduction would result in CO2 emissions. After implementation, there was a reduction in environmental impact, and the VOC concentration was reduced to below 100 ppm without any CO2 emissions from the previous equipment. [Case Overview] ■ Challenges and Background: The customer was considering equipment that would reduce environmental impact and CO2 emissions while also lowering utility costs for the factory. ■ Solution: By introducing the exhaust gas directly into a silica gel PSA without dilution, the treatment method was changed. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where a VOC recovery device was implemented, and reuse was achieved through liquefied recovery. The customer was considering a method to recover VOCs generated from the production process in as high a purity as possible, as the cost and usage of solvents were increasing in a process where VOCs were consistently generated. After implementation, it was possible to keep the design outlet concentration below 100 ppm, and the recovered solvent was automatically transferred when the liquid accumulated, resulting in a reduced operational burden and the creation of a system for reuse. [Case Summary] ■ Challenges and Background: The customer was exploring methods to recover VOCs generated from the production process in as high a purity as possible for reuse. ■ Solution: Reduced the processing gas flow rate to make the device more compact. *For more details, please download the PDF or feel free to contact us.