China factory Hot Selling Oil Free LPG Compressor for Gas Loading Unloading Industrial Use arb air compressor

Product Description

HangZhou CHINAMFG Gas Equipment Co.,Ltd, exporting diaphragm compressor, piston compressor, oxygen generator, gas cylinder and nitrogen generators with good quality and low price.

Piston compressor is a kind of piston reciprocating motion to make gas pressurization and gas delivery compressor mainly consists of working chamber, transmission parts, body and auxiliary parts. The working chamber is directly used to compress the gas, the piston is driven by the piston rod in the cylinder for reciprocating motion, the volume of the working chamber on both sides of the piston changes in turn, the volume decreases on 1 side of the gas due to the pressure increase through the valve discharge, the volume increases on 1 side due to the reduction of air pressure through the valve to absorb the gas.

Compressor for unloading and loading
Product description
This ZW series of oil-free compressors is 1 of the first products produced by our factory in China. The compressors have the advantage of low rotating speed, high component strength, stable operation, long service life and convenient maintenance. It is consist of compressor, gas-liquid separator, filter, two-position four-way valve, safety valve, check valve, explosion-proof motor and base etc. It has the characteristics of small size, light weight, low noise, good sealing, easy installation and easy operation.
This compressor is mainly used for unloading, loading, dumping, residual gas recovery and residual
liquid recovery of LPG/C4, propylene and liquid ammonia. It is widely used in gas, chemical,
energy and other industries, and is a key equipment in gas, chemical, energy and other
industries.

Note: In the process of unloading, the compressor pressurizes the gas from the storage tank and
then presses it into the tanker through the gas phase line, and presses the liquid from the tanker
to the storage tank through the pressure difference of the gas phase to complete the unloading
two process. When the gas phase is pressurized, the temperature of the gas phase will rise. At this
time, it is not necessary to force it to cool, because if the gas phase is compressed and then
cooled, it is easy to liquefy, and the pressure difference of the gas phase is difficult to establish,
which is not conducive to the replacement of the gas phase and the liquid phase. In short, it will
prolong the unloading process time. If residual gas recovery is required, during the residual gas
recovery operation, a cooler can be selected for forced cooling of the gas phase, so as to recover
the residual gas as soon as possible.
The loading process is the opposite of the unloading process.

Propane-Butane Mix Compressor

Number Type Power(kW) Dimension (mm) Loading or unloading (t/h)
  1.  
ZW-0.6/16-24 11 1000×680×870 ~15
  1.  
ZW-0.8/16-24 15 1000×680×870 ~20
  1.  
ZW-1.0/16-24 18.5 1000×680×870 ~25
  1.  
ZW-1.5/16-24 30 1400×900×1180 ~36
  1.  
ZW-2.0/16-24 37 1400×900×1180 ~50
  1.  
ZW-2.5/16-24 45 1400×900×1180 ~60
  1.  
ZW-3.0/16-24 55 1600×1100×1250 ~74
  1.  
ZW-4.0/16-24 75 1600×1100×1250 ~98
  1.  
VW-6.0/16-24 132 2400×1700×1550 ~147

Inlet pressure:≤1.6MPa
Outlet pressure: ≤2.4MPa
Max differential pressure: 0.8MPa
Maximum Instantaneous Pressure Ratio:≤4
Cooling method: Air cooling

The unloading volume is calculated according to the inlet pressure of 1.6MPa, the outlet
pressure of 2.4MPa, the inlet temperature of 40 ºC , and the density of propylene liquid of
614kg/m3. When the working conditions change, the unloading volume will change accordingly,
which is for reference only.

 Piping and Instrumentation Diagram of gas unloading  
 Liquid delivery
At the beginning, open the liquid phase pipeline between the tanker and the storage tank. If the liquid level in the tanker is higher than the storage tank, it will automatically flow into the storage tank. When the balance is reached, the flow will stop. If the liquid phase of the tanker is lower than the storage tank, directly start the compressor, the four-way valve is in the positive position, and the gas is extracted from the storage tank by the compressor and then discharged into the tanker. At this time, the pressure in the tank car rises, the pressure in the storage tank drops, and
the liquid in the tank car flows into the storage tank. (as shown below)

 Surplus liquid recovery
The residual liquid recovery process is the opposite of liquid transfer. After the liquid is delivered, the four-way valve should be reversed, and the dotted line in the figure is closed. At this time, the remaining gas in the tanker is inhaled by the compressor, pressurized and then discharged to the storage tank until the pressure of the remaining gas drops to no recovery value. When recycling, pay attention that the compressor pressure ratio and exhaust temperature cannot exceed the allowable values.

The working principle of the four-way valve
                   

Pull the handle of the four-way valve, when the four-way valve is in the position shown in Figure a, the A side is the intake air, and the gas flows from A to B, through the pipe, the intake filter part, the compressor intake pipe, the compressor, The compressor discharge pipe, the D end flows to the C end, and the C end is the exhaust end.
When the four-way valve is in the position of Figure B, the C end is the intake air, and the gas flows from the C end to the B end, through the pipe, the intake filter part, the compressor intake pipe, the compressor, the compressor exhaust pipe, and the D end It flows to end A, which is the exhaust end.

Reference example for selection and calculation of Propane-Butane Mix unloading compressor
.Selection of compressor inlet and outlet pressure
Saturated vapor pressure of Propane-Butane Mix at 20~36ºC

Temperature(ºC) Atmosphere Temperature(ºC) Atmosphere
20 8.4585 30 11.512
22 9.0125 32 12.212
24 9.5940 34 12.943
26 10.2040 36 13.708
28 10.8430    

In the case of high temperature, the saturated vapor pressure of Propane-Butane Mix is high, so the 16barg (inlet pressure)-24barg (outlet pressure) model is selected to meet the use environment when the temperature is high.
Note: The unit of pressure is kg/cm2

 

  • Compressor Flow Calculation

The specific flow calculation is more complicated and needs to be finally determined according to the calculation formula and experience. Only a simple calculation method is introduced here.

1. Calculate the volume of the tanker
According to the provided operating conditions, first determine the total volume flow required to unload the 15-ton Propane-Butane Mix tanker in 1 hour.
The specific gravity of Propane-Butane Mix is 0.618, so the volume of 15 tons of Propane-Butane Mix is: 15 ÷0.618=24.272m3; and since the tanker is not allowed to be full, it is generally about 80% of the tanker’s volume. The volume is 24.272+15×0.2=27.272, so the volume of the tanker should be 30m3.

2.Calculate flow
When the compressor is unloading, the pressure difference must first be established before the Propane-Butane Mix can be unloaded from the tanker to the storage tank. Generally, the time to establish the pressure difference is 15 minutes, so the actual unloading time is only about 45 minutes, that is, the required displacement is 30 ÷ 45 = 0.66667m3/min; and after the gas is pressurized from 16kg to 24kg by the compressor, the volume will be reduced to about 0.66667 (16 ÷ 24) of the original volume, then the compressor displacement is: 0.66667 ÷ 0.66667 =1m3/min

According to the above calculation, the compressor model is selected as ZW-1.1/16-24


Engineering Specifications

  Compressor Model
ZW-0.8/16-24 ZW-1.0/16-24 ZW-1.5/16-24 ZW-2.0/16-24
Bore(mm) 105 130 136 160
Stroke(mm) 80 80 80 80
Piston Displacement(m3/h)
@min.rpm
@max. rpm
30
48
47
60
58
90
78
120
Compressor Speed
Min. rpm
Max. rpm
460
660
460
660
520
740
510
730
Max. Working Pressure(bar) 24 24 24 24
Max. Brake Horsepower(kw) 15 22 30 37
Max. Discharge Temperature(ºC) 110ºC 110ºC 110ºC 110ºC
max. Compression Ratio
Continuous Duty
Intermittent Duty
4
6
4
6
4
6
4
6

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After-sales Service: Provide After-Sales Service
Warranty: 18months
Lubrication Style: Lubricated
Cooling System: Water Cooling
Cylinder Arrangement: Balanced Opposed Arrangement
Cylinder Position: Angular
Customization:
Available

|

air compressor

What Is the Fuel Efficiency of Gas Air Compressors?

The fuel efficiency of gas air compressors can vary depending on several factors, including the compressor’s design, engine size, load capacity, and usage patterns. Gas air compressors typically use internal combustion engines powered by gasoline or propane to generate the mechanical energy required for compressing air. Here’s a detailed explanation of the factors that can influence the fuel efficiency of gas air compressors:

1. Engine Design and Size:

The design and size of the engine in a gas air compressor can impact its fuel efficiency. Engines with advanced technologies such as fuel injection and electronic controls tend to offer better fuel efficiency compared to older carbureted engines. Additionally, larger engines may consume more fuel to produce the required power, resulting in lower fuel efficiency compared to smaller engines for the same workload.

2. Load Capacity and Usage Patterns:

The load capacity and usage patterns of the gas air compressor play a significant role in fuel efficiency. Compressors operating at or near their maximum load capacity for extended periods may consume more fuel compared to compressors operating at lower loads. Additionally, compressors used intermittently or for lighter tasks may have better fuel efficiency due to reduced demand on the engine.

3. Maintenance and Tuning:

Proper maintenance and tuning of the gas air compressor’s engine can improve fuel efficiency. Regular maintenance tasks such as oil changes, air filter cleaning/replacement, spark plug inspection, and tuning the engine to the manufacturer’s specifications can help ensure optimal engine performance and fuel efficiency.

4. Operating Conditions:

The operating conditions, including ambient temperature, altitude, and humidity, can affect the fuel efficiency of gas air compressors. Extreme temperatures or high altitudes may require the engine to work harder, resulting in increased fuel consumption. Additionally, operating in humid conditions can affect the combustion process and potentially impact fuel efficiency.

5. Fuel Type:

The type of fuel used in the gas air compressor can influence its fuel efficiency. Gasoline and propane are common fuel choices for gas air compressors. The energy content and combustion characteristics of each fuel can affect the amount of fuel consumed per unit of work done. It is important to consider the specific fuel requirements and recommendations of the compressor manufacturer for optimal fuel efficiency.

6. Operator Skills and Practices:

The skills and practices of the operator can also impact fuel efficiency. Proper operation techniques, such as avoiding excessive idling, maintaining consistent engine speeds, and minimizing unnecessary load cycles, can contribute to improved fuel efficiency.

It is important to note that specific fuel efficiency ratings for gas air compressors can vary widely depending on the aforementioned factors. Manufacturers may provide estimated fuel consumption rates or fuel efficiency data for their specific compressor models, which can serve as a reference point when comparing different models or making purchasing decisions.

Ultimately, to maximize fuel efficiency, it is recommended to select a gas air compressor that suits the intended application, perform regular maintenance, follow the manufacturer’s guidelines, and operate the compressor efficiently based on the workload and conditions.

air compressor

What Is the Role of Air Receivers in Gas Air Compressor Systems?

Air receivers play a crucial role in gas air compressor systems by serving as storage tanks for compressed air. Here’s a detailed explanation:

1. Storage and Stabilization:

The primary function of an air receiver is to store compressed air generated by the gas air compressor. As the compressor produces compressed air, the air receiver collects and stores it. This storage capacity helps meet fluctuating demand in compressed air usage, providing a buffer between the compressor and the system’s air consumption.

By storing compressed air, the air receiver helps stabilize the supply to the system, reducing pressure fluctuations and ensuring a consistent and reliable flow of compressed air. This is particularly important in applications where the demand for compressed air may vary or experience peaks and valleys.

2. Pressure Regulation:

Another role of the air receiver is to assist in pressure regulation within the gas air compressor system. As compressed air enters the receiver, the pressure inside increases. When the pressure reaches a predetermined upper limit, typically set by a pressure switch or regulator, the compressor stops supplying air, and the excess air is stored in the receiver.

Conversely, when the pressure in the system drops below a certain lower limit, the pressure switch or regulator signals the compressor to start, replenishing the compressed air in the receiver and maintaining the desired pressure level. This cycling of the compressor based on pressure levels helps regulate and control the overall system pressure.

3. Condensate Separation:

During the compression process, moisture or condensate can form in the compressed air due to the cooling effect. The air receiver acts as a reservoir that allows the condensate to settle at the bottom, away from the outlet. The receiver often includes a drain valve at the bottom to facilitate the removal of accumulated condensate, preventing it from reaching downstream equipment and causing potential damage or performance issues.

4. Energy Efficiency:

Air receivers contribute to energy efficiency in gas air compressor systems. They help optimize the operation of the compressor by reducing the occurrence of short-cycling, which refers to frequent on-off cycling of the compressor due to rapid pressure changes. Short-cycling can cause excessive wear on the compressor and reduce its overall efficiency.

The presence of an air receiver allows the compressor to operate in longer and more efficient cycles. The compressor runs until the receiver reaches the upper pressure limit, ensuring a more stable and energy-efficient operation.

5. Air Quality Improvement:

Depending on the design, air receivers can also aid in improving air quality in the compressed air system. They provide a space for the compressed air to cool down, allowing moisture and some contaminants to condense and separate from the air. This can be further enhanced with the use of additional filtration and drying equipment installed downstream of the receiver.

In summary, air receivers play a vital role in gas air compressor systems by providing storage capacity, stabilizing compressed air supply, regulating system pressure, separating condensate, improving energy efficiency, and contributing to air quality control. They are an integral component in ensuring the reliable and efficient operation of compressed air systems across various industries and applications.

air compressor

What Safety Precautions Should Be Taken When Operating Gas Air Compressors?

Operating gas air compressors safely is essential to prevent accidents, injuries, and equipment damage. It’s important to follow proper safety precautions to ensure a safe working environment. Here’s a detailed explanation of the safety precautions that should be taken when operating gas air compressors:

1. Read and Follow the Manufacturer’s Instructions:

Before operating a gas air compressor, carefully read and understand the manufacturer’s instructions, user manual, and safety guidelines. Follow the recommended procedures, maintenance schedules, and any specific instructions provided by the manufacturer.

2. Provide Adequate Ventilation:

Gas air compressors generate exhaust fumes and heat during operation. Ensure that the operating area is well-ventilated to prevent the accumulation of exhaust gases, which can be harmful or even fatal in high concentrations. If operating indoors, use ventilation systems or open windows and doors to allow fresh air circulation.

3. Wear Personal Protective Equipment (PPE):

Wear appropriate personal protective equipment (PPE) when operating a gas air compressor. This may include safety glasses, hearing protection, gloves, and sturdy footwear. PPE helps protect against potential hazards such as flying debris, noise exposure, and hand injuries.

4. Perform Regular Maintenance:

Maintain the gas air compressor according to the manufacturer’s recommendations. Regularly inspect the compressor for any signs of wear, damage, or leaks. Keep the compressor clean and free from debris. Replace worn-out parts and components as needed to ensure safe and efficient operation.

5. Preventive Measures for Fuel Handling:

If the gas air compressor is powered by fuels such as gasoline, diesel, or propane, take appropriate precautions for fuel handling:

  • Store fuel in approved containers and in well-ventilated areas away from ignition sources.
  • Refuel the compressor in a well-ventilated outdoor area, following proper refueling procedures and avoiding spills.
  • Handle fuel with caution, ensuring that there are no fuel leaks or spills near the compressor.
  • Never smoke or use open flames near the compressor or fuel storage areas.

6. Use Proper Electrical Connections:

If the gas air compressor requires electrical power, follow these electrical safety precautions:

  • Ensure that the electrical connections and wiring are properly grounded and in compliance with local electrical codes.
  • Avoid using extension cords unless recommended by the manufacturer.
  • Inspect electrical cords and plugs for damage before use.
  • Do not overload electrical circuits or use improper voltage sources.

7. Secure the Compressor:

Ensure that the gas air compressor is securely positioned and stable during operation. Use appropriate mounting or anchoring methods, especially for portable compressors. This helps prevent tipping, vibrations, and movement that could lead to accidents or injuries.

8. Familiarize Yourself with Emergency Procedures:

Be familiar with emergency procedures and know how to shut off the compressor quickly in case of an emergency or malfunction. Have fire extinguishers readily available and know how to use them effectively. Develop an emergency action plan and communicate it to all personnel working with or around the compressor.

It’s crucial to prioritize safety when operating gas air compressors. By following these safety precautions and using common sense, you can minimize the risks associated with compressor operation and create a safer work environment for yourself and others.

China factory Hot Selling Oil Free LPG Compressor for Gas Loading Unloading Industrial Use   arb air compressorChina factory Hot Selling Oil Free LPG Compressor for Gas Loading Unloading Industrial Use   arb air compressor
editor by CX 2024-04-30

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