The solvent recovery device is completed and put into operation, and the performance acceptance is the key link to complete the contract index into the measured data: recovery rate, emission concentration, energy consumption and noise, which are measured item by item according to the agreed working conditions, and whether they reach the standard or not is spoken with the data. LuoyangWohong PetrochemicalThe performance acceptance and recovery rate calculation service of the equipment not only serves the delivery acceptance of the new device, but also serves the transformation evaluation of the in-service device. The material balance report formed by the calculation can be directly used for the solvent loss management within the enterprise.
The reason why acceptance and calculation are worth making a separate service is that the caliber of the two is easy to dispute: how to determine the working condition, where the measuring point is, and how long the data is taken. If it is not clear in advance, acceptance will become different words. The first step of the service is to write the assessment standard into a document, which will be signed and approved by both parties before the test is started.
The assessment items shall be implemented item by item according to the contract indicators: the recovery rate shall be based on the accounting data of incoming and outgoing materials, the emission concentration shall be sampled according to the specifications of the discharge port, the energy consumption shall be measured by item of electricity and steam, and the noise shall be measured at the near points of the factory boundary and the equipment. The measuring point position, sampling frequency and data period of each item are written in the scheme, and the production conditions during the test are recorded synchronously-it is meaningless to talk about data out of the working conditions, and the periods with large load fluctuations are marked separately.
The arrangement of the test period is exquisite: take the continuous period of normal production week, avoid unconventional working conditions such as parking and cleaning and replacement, and separate arrangement for special working conditions to be examined. After the data is taken, it is compared with the design value and the contract value item by item, and the deviation item is analyzed for the reason, which belongs to the normalization correction of the working condition difference, and belongs to the column rectification item of the device problem.
The recovery rate is calculated by material balance: the amount of solvent input on the feed side, the amount of recovered liquid on the output side, the amount of escape at the discharge port, and the amount of waste water and waste residue brought out. The four accounts are combined, and the recovery rate and loss direction are clear at a glance. The basic data of the balance calculation comes from the batch ledger and measuring instruments. Before the calculation, the key instruments are checked. The difference of uneven accounts is checked according to the link. The balance calculation report is also the bottom account of loss management.
The value of the calculation is not only in the acceptance: most enterprises lack a clear account for the solvent loss management, and the balance report takes the loss apart by link-the loss of the collection link, the residual of the check section, and the breathing loss of the storage and transportation link, with data item by item. Where the loss is, the priority of management is, and this account will be available for a long time after acceptance.
| Assessment item | Measuring points and methods | Deliverables |
|---|---|---|
| Recovery rate | Import and export material balance | Measurement report of recovery rate |
| emission concentration | Vent Specification Sampling | Inspection data record |
| Energy consumption | Electric steam sub-metering | Energy consumption per unit recovery |
| Noise | Boundary and near field points | Noise measuring point data |
| Material Balance | Four accounts are split | loss direction analysis |
| Rectification Recommendations | Deviation Item Attribution Analysis | Rectification and retest list |
The delivery of services consists of three documents: acceptance test report, material balance and recovery rate calculation report, and rectification proposal list. Devices that do not meet the acceptance standards shall be retested after rectification according to the list, and the retest data shall be incorporated into the report for filing. The whole set of documents is not only the basis of delivery and settlement, but also an integral part of the enterprise environmental protection management ledger.
No, the data under normal production conditions are taken for acceptance. The short-term coordination between individual instrument calibration and measuring point installation is measured in hours, which is arranged in advance in the plan, and the production side only needs to cooperate as planned.
The value is in the loss account: there is no data support for the loss and whereabouts of most devices. the balance accounts for the loss, residual, storage and transportation losses by link, and the priority of management and the investment direction of transformation are determined by this account.
According to the rectification list: the deviation items are attributed one by one, the device problems are retested after rectification, and the working condition differences are normalized and corrected before evaluation. The purpose of acceptance is to put the problem on the table to solve, not a one-time qualitative.
This article is organized by Luoyang wohong petrochemical equipment co., ltd. the company provides design, manufacturing and operation and maintenance services for condensation recovery, membrane separation recovery and complete solvent recovery units for chemical and pharmaceutical enterprises. if you need process evaluation or scheme configuration, please contact and exchange.
Mr. Li 13526990215
Hotline
