Compression + Condensation/absorption + Membrane separation + Advanced treatment + Safe and high-strength regeneration

— Technical Overview —

For volatile oil and gas and organic solvents, compression + condensation/absorption + membrane separation process is adopted, combined with advanced treatment + safe and high-strength regeneration process (ie high-efficiency adsorbent absorption and desorption process) to recover and treat oil and gas, and the recovered condensate The oil separation can maintain the same quality as the raw material. The advanced treatment unit ensures the recovery efficiency of oil and gas and the exhaust gas up to the standard, and the safe and high-strength regeneration unit ensures the service life and performance of the adsorbent.

The recovery efficiency of the system is as high as 99% or more, the emission concentration of non-methane total hydrocarbons is less than 50mg/m3, and the emission concentration of benzene is as low as 2mg/m3. When the full opening rate of the oil and gas recovery device is ≥50%, it can be recovered in about 3~4 years. invest.

★ Compression process section

The volatile oil and gas first enter the special oil and gas compression system, and automatically adjust the working frequency of the compressor according to the change of the pipeline pressure, so as to balance the system load and the corresponding intake air volume. The compressor is a special compressor for oil and gas safety.

★ Condensation/absorption section

Condensation Separation: By reducing the oil and gas to a suitable condensation temperature, the substances in the gaseous state are condensed and separated from the oil and gas. In order to further improve the efficiency of the pretreatment section, an absorption process can be added, and the absorbent is usually diesel.

★ Membrane separation treatment section

According to the dissolution and diffusion rate of different organic gases in the membrane, that is, the difference in permeation rate (for example, organic gases are easier to dissolve and penetrate than nitrogen and oxygen), when the mixed gas passes through the membrane group, a high-concentration organic gas permeation flow is formed on the permeate side, while On the high-pressure retentate side, a retentate gas stream enriched with conventional gas (air, methane, etc.) is formed to complete the gas separation. The separated permeate gas is recovered by vacuum condensation, and the separated low-concentration gas on the residual side enters the advanced treatment section for adsorption and recovery.

★ Advanced processing section

— Technical Value —

(1) Taking membrane separation + adsorption + safe and high-strength regeneration process as the core technology, with compression, pretreatment, absorption, condensation and other processes as supporting auxiliary technologies;

(2) Membrane separation improves the recovery efficiency and reduces the load on the adsorption section of the adsorbent.

(2) The recovery management system is equipped with corresponding automatic instruments and control systems to realize the efficient and safe operation of unattended and oil and gas recovery systems;

(3) Combining various regeneration methods to ensure the regeneration efficiency of adsorbent materials;

(4) While ensuring efficient recovery of condensate, ensure that the concentration of non-methane total hydrocarbons in tail gas emissions is less than or equal to 50mg/m3, and the emission indicators of characteristic pollutants are far lower than the national emission indicators (for example, the emission concentration of benzene can be less than or equal to 2mg/m3) )

(5) Condensate of the same quality as the raw material can be recovered. When the full opening rate is ≥50%, the investment can be recovered in about 3 to 4 years.

— Process Flow Chart —

— Typical Case —

On-site photo of oil and gas recovery device

— Application Field —

VRU-II oil and gas recovery technology is not only suitable for high-concentration oil and gas recovery and treatment such as crude oil tanks, refined oil tanks, and volatile chemical storage and transportation tanks, but also for oil and volatile chemicals in the process of transportation, loading and unloading. The high-concentration oil and gas recovery and treatment produced by the Institute is mainly used in the following industries:

Petrochemical & Coal Chemical Industry;

Crude Oil & Coal Mining;

Storage, Transportation & Marine Industry(Liquid chemical material);

Shipping, Offshore Engineering & Dock;

Fine Chemical & Pharmaceutical Chemical Industry;

Steel Industry.