Solvent recovery devices rarely have standard models that can be bought and used: each company has different solvent varieties, concentration ranges, air volume temperature and site conditions, and applying other people's schemes often suffers from both yield and energy consumption. Customized design service is to design the device on demand from the actual working conditions of the enterprise-the process is right, the parameters are matched, and the site is fitted. Every part of the device has a reason to exist, and every penny of investment is spent where the working conditions need.
The input of the customized design is the working condition data: the variety and composition of the solvent, the concentration and air volume of each exhaust gas, the temperature and humidity, the emission requirements, the site conditions and the public works conditions. The data source shall be measured first-several rounds of typical working conditions shall be measured on site with testing instruments, which is more reliable than the figures on the design data. Items that are inconvenient to be measured shall be estimated and marked with uncertainty according to similar experience. Only when the working condition data are complete can the scheme design be based on, the equipment selection is not a slap on the head, and the subsequent performance assessment also has a benchmark for comparison.
The scheme design follows three steps: first determine the route-condensation, adsorption, membrane separation or combined process, and compare and select according to the concentration gear and recovery target; Then determine the parameters-condensation temperature, number of equipment and buffer volume according to the working conditions; Finally, the layout is determined-the equipment is arranged according to the site conditions, and the pipeline direction is considered together with the operation and maintenance space. Scheme delivery includes process flow chart, material and energy accounting, equipment list and investment estimation. With figures, enterprises can calculate and compare their own accounts, and each adjustment of the scheme has an accounting basis to follow. The comparison and selection of the scheme is not only based on investment: the operation energy consumption, spare parts supply and operation complexity are all in the list of comparison and selection. The scheme with low one-time investment may not have the lowest comprehensive cost. Only when the five-year operation account is calculated together can the selection be convincing. During the scheme review, the key assumptions were reviewed one by one-what caliber is the concentration, what working conditions are the air volume, and what standard is the emission. If the assumptions are clearly written, the direction of adjustment will be clear when there are discrepancies in the measured data.
After the scheme is confirmed, detailed design shall be entered: equipment drawings, pipeline layout and instrument control scheme shall be drawn item by item, manufacturing shall be constructed according to the drawings, and inspection records shall be kept for key processes. Pre-assembly and pressure test before leaving the factory to reduce the workload on site; On-site installation and commissioning shall be accepted according to the plan, and the performance assessment shall be checked item by item against the design indicators-recovery rate, emission concentration and energy consumption level, and handed over after reaching the standard. The rigor of the design is finally reflected in the performance assessment. If the indicators are calculated, the assessment will be hard and the delivery will be smooth.
| Service phase | Job responsibilities | Deliverables |
|---|---|---|
| Measured condition | On-site inspection data acquisition | Design input file |
| Scheme design | Route comparison parameter accounting | Scheme and estimation |
| Detailed design | Item-by-item drawing of I & C drawing | Construction Drawings |
| Manufacturing Inspection | Key marks for construction as per the drawing | Inspection record |
| Installation and commissioning | Pre-assembly site docking | Acceptance Record |
| Performance assessment | Check the design index | Handover of appraisal report |
Customization is not expensive. When the standard models do not match the working conditions, the extra energy consumption and yield loss are accumulated all the year round, and customization is often more economical after accounting. The price is determined according to the configuration, and the estimation is given in the scheme stage, which is transparent and compared.
Yes, the actual measurement is complete. Field measurement is the main source of design input. Items with limited conditions are estimated according to similar experience and the margin is indicated. After commissioning, fine adjustment is made according to actual data, and there is room for adjustment in the design documents.
The plan promises to be stated according to the design indicators, and check item by item during performance assessment and acceptance; The achievement of the indicators depends on the matching of working conditions and standardized operation, and the key points of operation shall be submitted together during handover, and both parties shall confirm the assessment caliber in advance.
This article by LuoyangWohong PetrochemicalEquipment Co., Ltd. arranges that the company provides design, manufacturing and operation and maintenance services for condensation recovery, membrane separation recovery and complete solvent recovery devices for chemical and pharmaceutical enterprises. If you need process evaluation or scheme configuration, please contact and exchange.
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