Currently,the standards for controlling volatile organic compounds(VOCs)generated during the storage and handling of liquid raw materials in various industries are becoming increasingly detailed.Various production and storage sites have diverse requirements for the comprehensive adaptability and operational stability of oil and gas recovery equipment.Shandong Keshiman Environmental Technology,as a manufacturer of complete sets of oil and gas recovery equipment,has independently launched a condensation-adsorption combined oil and gas recovery equipment,which adapts to the waste gas treatment needs of different operating conditions based on composite processes.The following section explains the equipment from four aspects:basic equipment introduction,core product features,standard operating procedures,and mainstream applicable fields,with an overall summary at the end.
I.Basic Equipment Introduction
This oil and gas recovery equipment adopts an integrated skid-mounted structure,which is divided into five modules:a waste gas pretreatment unit,a multi-stage gradient condensation unit,a vacuum adsorption-desorption unit,an intelligent automatic control unit,and a liquid medium recovery and storage unit.The equipment is equipped with a cascade refrigeration system,employing a staged cooling mode.First,a pre-cooling module separates water vapor and high-boiling-point organic components from the waste gas.Then,the intermediate and deep cooling structures liquefy most of the oil and gas substances.Low-concentration exhaust gas that is not fully condensed is sent to the adsorption unit for deep treatment.After adsorption saturation,the high-concentration oil and gas produced by desorption is returned to the condenser front end for recycling.The liquefied and recovered organic liquid is collected and stored.The entire unit is equipped with explosion-proof electrical control and pressure and temperature interlock protection components.The refrigeration temperature and equipment processing specifications can be adjusted according to the on-site waste gas volume and medium type,supporting customized size configurations.
II.Core Product Features
1.Composite Process Adapts to Fluctuating Operating Conditions.The equipment combines condensation and adsorption technologies,adapting to organic waste gas scenarios with large concentration fluctuations.This alleviates the limited capacity of a single condensation process for low-concentration exhaust gas and the excessive load of a single adsorption unit for high-concentration waste gas.The two processes operate in tandem,adapting to more complex waste gas conditions.
2.Corrosion-Resistant Structure Adapts to Corrosive Media.3.Stainless steel is used for heat exchange pipes,tanks,and components that come into direct contact with oil and gas.This material helps slow corrosion of components and extends the equipment's lifespan,especially against slightly corrosive volatile organic compounds such as methanol,gasoline,and esters.
4.Automated operation reduces manual monitoring.Equipped with a PLC intelligent control system,it can collect real-time data on equipment temperature,internal pressure,and exhaust gas concentration.It can autonomously adjust cooling power and adsorption-desorption switching cycles.In case of abnormal operating conditions,it can automatically trigger alarms and shutdown interlocks,reducing the frequency of continuous manual monitoring.
5.Modular skid-mounted installation simplifies operation.The entire unit is integrated on a unified skid base with a compact layout of functional units.No large-scale on-site construction is required;only pipe connections and power-on debugging are needed for operation.Relocation and equipment modification are also simplified.
6.Simple and convenient daily maintenance.The wear rate of the condensation heat exchange core components is relatively slow,the adsorption packing has a moderate replacement cycle,and the equipment comes with standardized universal parts,making procurement and replacement relatively easy.Routine maintenance only requires periodic cleaning of the filter and inspection of sealing components.III.Standard Operating Procedures
1.Closed-Loop Waste Gas Collection Arrangement:Connect all waste gas generating points,such as the storage tank vent,filling and unloading points,and reactor vent,to the equipment's inlet via a closed pipeline.Perform pipeline airtightness testing to reduce fugitive oil and gas emissions.
2.Start-up Parameter Debugging and Trial Run:Based on the on-site waste gas medium,processing air volume,and initial concentration,set parameters such as staged cooling temperature and adsorption cycle time in the control system.Run the system under no-load for half an hour to confirm that the refrigeration,adsorption,and automatic control systems are functioning normally before introducing waste gas.
3.Routine Continuous Production Operation:Introduce the organic waste gas generated during production.The equipment automatically completes the entire process of pre-cooling and dehydration,staged condensation and liquefaction,and residual tail gas adsorption and purification.The recovered liquid medium automatically flows into the matching storage tank,and the treated tail gas is continuously and stably discharged.
4.Periodic Transfer of Recovered Medium:Referring to the liquid level indicator in the storage tank,periodically export the collected liquid raw material for reuse in the production process.5.Shutdown and Regular Maintenance:After production,sequentially shut off the inlet valve,refrigeration unit,and adsorption system;regularly clean the pretreatment filter,check for frost on heat exchange pipelines and aging of seals,and replace the adsorption packing according to actual wear and tear.
IV.Main Application Scope of the Equipment
1.Oil Storage and Transportation Related Industries:Treats oil vapors from refined oil depots,tanker loading and unloading platforms,and tertiary oil and gas treatment at gas stations,handling oil vapors generated from the volatilization of gasoline,diesel,jet fuel,etc.
2.Fine Chemical Production Scenarios:Recovers volatile waste gases from methanol,ethanol,ethyl acetate,and other organic solvent storage tanks,filling workshops,and reaction kettles;suitable for VOCs treatment in vitamin C,resin,and coating production lines.
3.Food Processing Production:Recovers alcohols,esters,and fruit flavoring organic waste gases volatilized during the production process in concentrated fruit juice and fruit flavoring production lines.
4.Hazardous Liquid Storage Areas:Treats mixed organic waste gases generated from temperature and level changes in various liquid chemical raw material storage tank areas.
5.Small and medium-sized pharmaceutical intermediate workshops:Recovery and treatment of low-boiling-point solvent volatile waste gas generated in the raw material extraction section.
Summary
Shandong Keshiman Environmental Technology's condensation adsorption combined oil and gas recovery equipment,relying on a dual-process collaborative design,coupled with automated control,corrosion-resistant skid-mounted structure,and standardized operation procedures,covers organic waste gas recovery scenarios in multiple industries such as oil,chemical,food,and pharmaceutical.The equipment combines waste gas treatment and organic media recovery functions,with relatively moderate installation and maintenance thresholds.It can adapt to various production conditions with different air volumes and concentration fluctuations,and can meet the current waste gas treatment and resource recovery needs of most enterprises.