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Voc Treatment System Adsorption - Hot Nitrogen Desorption Type Vapor Recovery Unit

Voc Treatment System Adsorption - Hot Nitrogen Desorption Type Vapor Recovery Unit

Voc Treatment System Adsorption - Hot Nitrogen Desorption Type Vapor Recovery Unit

Product Details:

Place of Origin: China
Brand Name: QIYAO
Certification: ISO, ASME

Payment & Shipping Terms:

Minimum Order Quantity: 1 set
Price: Customized Product, Quoted Case By Case
Packaging Details: Seaworthy packing
Delivery Time: 120 days
Payment Terms: T/T, L/C
Supply Ability: 20 sets per year
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Detailed Product Description
Material: Carbon Steel, Stainless Steel Application: For Vapor Recovery Of Highly Volatile Liquid During Loading/unloading Process
Efficiency: Over 97% Valuable Composition In The Vapor Can Be Recovered Service: Design, Engineering & Supply With Site Supervision
Customized: Available

Adsorption-Hot Nitrogen Desorption Type Vapor Recovery Unit

 

* Summary

 

Vapor Recovery Unit is to collect the organic vapor discharged during the manufacturing, storage, loading and unloading processes of various industries and recycle it by means of condensation, adsorption, absorption, membrane separation, etc. so as to finally satisfy the emission standards and create certain economic benefits for the end user.

 

The oil vapor handled by adsorbent will satisfy the emission standard and be discharged directly. The organics separated will be adsorbed and enriched in the adsorbent. When the adsorbent is nearly saturated, a stream of hot nitrogen or steam will be introduced for desorption. The desorbed gas mixture will be condensed so that the organics can be separated for the purpose of recovery.

 

Adsorption process is ideal for the oil vapor of low concentration. The emission after treatment can satisfy stringent national or local standards. Adsorption-Hot Nitrogen/Steam Desorption Process will omit the investment on vacuum pump and is especially suitable for treatment of oil vapor difficult to be desorbed. It is featured of high recovery efficiency and low energy consumption.

 

 

Principle / Flow Procedure

Taking advantage of different bonding force between the various compositions and the adsorbent, the adsorption process can first separate those difficult to be adsorbed from the others and then the organics apt to be adsorbed get enriched in the adsorbent. Clean emission after treatment then is directly discharged into the atmosphere. When the absorbent is nearly saturated, hot nitrogen or steam is introduced to increase the adsorbent temperature so that the compositions collected in it vaporizes and escapes. The oil vapor released is finally recovered by condensation. The absorbent SMDERI uses is the coal based dedicated activated carbon of oil vapor.

 

 

Structure & Parameter (typical project)

Application Vapor recovery
Equipment name Vapor Recovery Unit
Model QY/VR series
Capacity 50-5000 m3/h
Structure Skid-mounted
Material Carbon steel
Fabrication code GB150.1~4-2011
Design code

GB50759-2012

Q/SH0117-2007

Design pressure Micro positive pressure
Design temperature Ambient
Applicable exhaust gas Low concentration oil vapor
Adsorption tank Vertical atmospheric pressure tank
Adsorbent Coal-base activated carbon
Heat exchanger Tubular heat exchanger
Control method PLC automatic control
Main measuring point Pressure signal, level signal, temperature signal
Main interlocked alarm Pressure signal for interlocked blower start-up/shut down; Level signal for interlocked drain pump start-up/shut down; Temperature alarm for interlocked emergency shut down; Concentration alarm of flammable or toxic gas
Connection Bolted
Sealing Flange
Utility consumption

Instrument air ≤10Nm3/h

nitrogen/steam relevant to the capacity

Emission

Benzene ≤ 4mg/m3,

Toluene ≤ 15mg/m3,

Xylene ≤ 20mg/m3,

Ethylbenzene ≤ 100mg/m3,

Acetonitrile ≤ 50mg/m3;

Non-methane total hydrocarbons:

- Removal rate ≥ 97%,

Concentration of emission ≤ 120mg/m3

Noise level ≤ 85dB (A)
Stack height 15 m
Service life 25 years
Activated carbon life

8 years for hot nitrogen desorption

3-5 years for steam desorption

Spare parts Available for 2 years
Warranty period 12 months after start-up of 18 months after arrival of equipment
Scope of work / service Supply of full equipment package, supervision for site installation & commissioning, training for operation
Service response time Within 12 hrs
Project owner CNPC Golmud Refinery Plant

 

 

Advantage

1) ASPEN for process calculation and SW6 for equipment calculation;

2) CADworx for skid design;

3) Started R&D since 2007, built a test platform, accumulated plenty of analysis and research data;

4) Built projects are compliant with current emission standard. Plenty of project experience;

5) 3 tanks + 2 stage adsorption, the exhaust gas meets the emission standard;

6) Multiple temperature monitoring points at the adsorption tank for safe operation;

7) Highly automated, nitrogen electric heater is provided with over temperature automatic shut-down and adsorption and desorption is switched automatically;

      8) Delivered as a skid to reduce site installation work;

      9) Fully sealed blower and flanged connection in the skid to achieve zero leakage;

     10) ExdIIBT4 or ExdIICT4 explosion proof.

 

 

Applied data for an typical project

---- Concentration of emission: Compliance with GB31570-2015 <Standard of pollutant emission for           oil refinery industry>, GB31571-2015 <Standard of pollutant for petrochemical industry> and the         related local standard.

---- Details:

      Benzene ≤ 4mg/m3,

      Toluene ≤ 15mg/m3,

      Xylene ≤ 20mg/m3,

      Ethylbenzene ≤ 100mg/m3,

      Acetonitrile ≤ 50mg/m3;

      Non-methane total hydrocarbons:

- Removal rate ≥ 97%,

- Concentration of emission ≤ 120mg/m3;

      Noise (1m from VRU) : ≤ 85dB (A)

      Height of exhaust port: ≥ 15m.

 

 

Voc Treatment System Adsorption - Hot Nitrogen Desorption Type Vapor Recovery Unit

Voc Treatment System Adsorption - Hot Nitrogen Desorption Type Vapor Recovery Unit

Contact Details
Shanghai Marine Diesel Engine Research Institute

Contact Person: Mrs. Tan Ling

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