Safe Equip, 971 Park Street, unit 409, Clearwater, FL (2026)

11/21/2022

Professional service of Nitrogen PSA in Florida

Not many people bother to read the manual for the equipment, especially if it is a small commercial enterprise without its own service department and chief engineer.

So what should be done to ensure trouble-free operation of the station for a long period of time, for example 10-15 years?

The main thing to do, of course, is to service the screw air compressor. The basic operation procedure after 2000-3000 hours of operation is as follows:
Compressor oil change
Air filter replacement at air inlet
Change of oil filter
Change of oil separator (not on all models of compressors)

Also it is necessary to change filter elements of trunk filters every two thousand hours. There are usually three of them in a set or four.

The nitrogen generator itself requires less manipulation and is less complicated:
Replacing the gas sensor (sensor). This should be done every 4,000 hours or a year of operation (depends which type is it). If this is not done and the sensor is not calibrated, the gas parameters that appear on the display may not be accurate.

Check and lubricate the pneumatic valves. This action is often done as needed when the station begins to work differently and unstable. Or it is done after 12,000 hours of operation.
And the most costly, but most infrequent, is changing the carbon molecular sieve (CMS). We recommend changing the CMW every 12,000 to 16,000 hours. The adsorbent has its natural mechanical wear and tear and must be replaced.

All work can be carried out by your in-house staff. Parts are always available in our warehouse and we can promptly send all necessary spare parts and consumables.

We have prepared a small memo on station maintenance, which can be conveniently hung next to the equipment at the place of operation. Just reply to this email and we will send you a WORD document which you can print and hang near the equipment.

If you still have questions, send a message to the service team here.

Christmas promotion: first equipment check up for free for new customers in Florida! We provide service for all brands of nitrogen equipment.

11/21/2022

How can budget equipment be reliable?

Budget equipment can be qualitative and reliable only in consequence of cost reduction unrelated to the quality of components. Our company has set a goal to develop and produce reliable PSA generators, namely:

How we achieve low cost of the equipment we produce:
1. We unify components - in our case it is the use of modular design of adsorption generators and dryers. Using the same modules we can get equipment of different models. Due to the volume we reduce the cost of components.
2. We produce it in China - we constantly produce universal modules and standard stations, which we keep in the warehouse until there is request. Constant availability of modules in stock allows us to cover surges in demand and ship equipment in the shortest possible time without increasing price.
We increase the level of automation - automation of stations allows us to carry out supervised installation and commissioning work in the shortest possible time, and we do not require an expanded staff of service engineers.
We buy in large quantities - due to the unification of components of all manufactured stations, we are able to buy in large quantities and thus have the best offers from suppliers.
We automate production - after assembling the equipment is connected to a special test bench, where its separate assemblies are tested in automatic mode.
We automate sales - we prepare technical materials and calculators for fast and competent equipment selection. We write training articles for customers.

Our target is the working equipment which constantly produce the nitrogen or oxygen. Send us a mail to know more about it and check out the price!

11/16/2022

PLACEMENT RULES

BASIC DATA FOR THE PLACEMENT OF EQUIPMENT IN THE PRODUCTION

Room size: when calculating the room, take into account the dimensions of all the elements of the plant and leave about 1 ft. around each piece of equipment. The height of the room should be at least 8 ft. from the height of the generator, this is usually the highest element of the system.

Temperature range: +41... +104 degrees Fahrenheit

It is necessary to have ventilation in the room and the possibility of condensate drainage.

A DETAILED DESCRIPTION OF THE ROOM REQUIREMENTS.
The size of the room can be easily calculated by knowing the dimensions of each element of the station. All elements of the station can be arranged in any order, following the sequence of connections. Often the equipment is placed along the wall, then it is easy to maintain and there is easy access to each element. A distance of 1.6 ft. allows for 2 - 3 ft. on one side and 1 - 2 ft. on the other side. Some norms require placing equipment at a distance of 3 ft. from the walls of the building - if there is such a possibility, you can take it into account, if the room does not allow it, you can place the equipment a little closer. Examples of equipment placement can be seen on the page of completed works

Also, when selecting a room, you need to consider the dimensions of the entrance gate/door in order to be able to carry out the installation. We provide all the dimensions of the equipment and you can easily check the dimensions of your entrance gate/doors.

It is possible to place equipment in basements, floors and utility rooms. In this case it is necessary to consider ventilation requirements, which are described below and also the weight of the equipment. Equipment is often heavy and the movement on the stairs and in remote places is not always possible. Consider the weight and you can always estimate your strength to move the equipment.

All equipment can be moved on an industrial rohle or with the help of a loader, for which there are special holes in the equipment. It is also possible to transport all the elements with a crane or other lifting mechanisms.

Temperature regime should be observed within the range from +41 to +104 degrees Fahrenheit primarily because of the requirements to the air compressor, where the oil and below the temperature +41 degrees Fahrenheit, it becomes more dense and it may have a negative impact on the work of the compressor. The same applies to higher temperatures - air compressors are designed to allow normal operation in such conditions. An air compressor generates a lot of heat and that heat can be used to heat the room. Sometimes a simple mechanical damper is installed on the exhaust vent from the compressor to control the flow of air from the compressor and to vent it to the outside or to the room. Thus, sometimes appropriate to use heat guns or other heating to heat the room to +41 degrees Fahrenheit, and then use heat from the air compressor.

In hot weather for maintenance of the temperature regime it is necessary to air the room well and necessarily to remove the hot air from the compressor.

Generators are designed to work at +70 degrees Fahrenheit and when the room temperature rises to +90 to +100 degrees Fahrenheit may slightly reduce the concentration of produced nitrogen/oxygen within 5-10%.

CONTAINER
Container
The nitrogen/oxygen generation system can be placed in containers, quick buildings made of sandwich panels and other materials, taking into account your climatic conditions. If you make the room yourself, we recommend using 0.3 ft. sandwich panels or in the case of metal sheet walls provide insulation of 0.3 ft. This is enough and as practice shows it can be used even in the far north.

When using a refrigerated dehumidifier, all pneumatic lines and air receivers should be located in a room with the same requirements as the main equipment.

The nitrogen/oxygen receiver as well as the nitrogen/oxygen lines can be located outdoors, routed or installed outside. This is due to the "humidity" of the air/gas, which is measured in dew point temperature. After a refrigerator dehumidifier the air dew-point temperature is +37...+41 degrees Fahrenheit, after an adsorption dehumidifier it is -50..-60 degrees Fahrenheit, after a nitrogen/oxygen generator -60...-70 degrees Fahrenheit. It means that at this temperature condensate may form inside the line. Thus if we want to place air receivers and lines outside we need to use adsorptive dehumidifier (the dehumidifier itself should work indoors). And all the lines and gas receivers can be placed outside without any problems.

VENTILATION
Ventilation

Ventilation can be installed after installation of equipment, if you have a small station (up to 10 000 SCFH)

For the compressor - this is primarily the removal of heat, hot air from the room. Such ventilation can be organized on site, after installation of the compressor.

For a nitrogen/oxygen generator, this is removal of waste gase. This can also be done after installation of the station. At the outlet of the nitrogen generator we have air with oxygen content of about 28-35%. It is not dangerous, but it is not recommended to leave it in a closed room. At the outlet of the oxygen generator we have air with reduced oxygen content, it can be about 5-15% oxygen. The oxygen content of atmospheric air is 20.9%.

If you have a large industrial space with high ceilings and ventilation is organized in the room, you can do without additional measures.

We recommend installing a wall-mounted oxygen sensor and thermometer in the room next to the generator in order to monitor the air in the room and to take measures during the operation of the equipment. The wall-mounted oxygen sensor is a relatively inexpensive and simple device.

CONDENSATE DRAIN
Condensate drain
Also during installation it is necessary to take into account condensate drainage. Condensate is formed in air receivers, air dryer, filters. Automatic systems are often used to drain the condensate from these elements, which are called "automatic condensate drain". This is a device that opens and closes a pneumatic line to drain the condensate, usually once every few minutes or sometimes they have a "float" trigger system and open as needed. It is recommended to drain the condensate into the sewer. Temporary condensate containers can be used and drained manually. This is often used in small systems with a capacity of up to 1500-3500 SCFH of gas. The condensate drain line is a flexible tube, 1/4" in diameter, which is often sufficient. We do not recommend draining the condensate outdoors, because firstly in winter part of the tube that is outdoors may freeze, and secondly there may be a small amount of oil in the condensate that remains after the compressor. This is called "natural carry-over" of oil from the compressor.

ELECTRICITY
The main consumer of electricity is the air compressor. It is 380V. You will need an electrical cabinet where you can connect the equipment directly. And also you need to provide lighting in the room to work and a few outlets - for a nitrogen generator (110V) and a dehumidifier (110V), their power is always specified in the technical specifications. Generator consumes less power than computer. It is necessary to have grounding.

The requirements are generally very simple and you can always make the necessary small utility room in the form of a container/hut and run the line to your main production on the street. The line can be up to 1/8 mile long and you only need to put an additional gas receiver near the consumer inside the room. You have to take into account the pressure loss on such a line, but often for the consumer this is not critical.

You can find more detailed explanation on our website:
https://s-equip.com/info/equipment-placement-in-production/

11/15/2022

How to choose a nitrogen generator

1st mistake is the wrong choice of concentration.
The most common mistake is the one that you have to pay a lot of money for, because if you are not responsible for the choice of this parameter, the range of prices can be quite large. For example, a nitrogen generator with a capacity of 30m³/hour and a concentration of 99.999 will cost 50% more than a generator of the same capacity with a concentration of 99.9%.

How to avoid? - It is necessary to study carefully the materials of the final equipment (consumer) or to contact competent engineers.

2nd mistake - the capacity is not accurately calculated.
The second important parameter of the station is its capacity, this parameter should be chosen with a small excess of 5 to 10%. If you choose it close to the actual consumption, any short-term excess may lead to a decrease in gas concentration.

How to avoid it? - The most correct way is a physical measurement of the gas consumption, but if this is not possible, then use special calculators or formulas to calculate it.

3rd mistake is not taking into account operating conditions
Another important point to consider is the future operating conditions of the station. For adsorption stations, an important environmental parameter is temperature, if its value will exceed the passport data of 104 degress Fahrenheit, the performance of the station will gradually decrease. If during operation the temperature drops below 5 degress Fahrenheit, there is a risk of condensation of droplets of moisture on the internal surface of the adsorbers, resulting in damage to the molecular sieve.

How to avoid? - Provide and maintain the required operating conditions or choose a special version of the generator.

4th mistake is an individual choice of compressor.
The nature of compressed air consumption in adsorption generators is quite complex and cyclic. Many factors must be taken into account for the correct operation of the system: the nature of consumption, the number of peak loads, additional losses of compressed air, the volume of receivers and much more.
Opinion of incompetent engineers, saying that the use of a frequency converter in the compressor will help save energy, in most cases it is a waste of money.

How to avoid it? - Trust this work to a competent engineer.

5th mistake is to select the equipment based on price.
Many people compare equipment solely on the basis of cost, but if you go deeper into the technical parameters and design, you can see a significant difference. The cost of generators depends on the quality of used components, adsorbent and automation level. The service life of budget stations is often not more than 3 years, and requires expensive repairs with the replacement of the molecular sieve.

How to avoid? - Choose quality equipment by comparing the components: valves used, adsorbent, automation system.

11/11/2022

Safe Equip production Facilities

11/11/2022

Nitrogen generation unit is a set of equipment that is used to concentrate nitrogen from atmospheric air. The maximum nitrogen concentration at the outlet is 99.9995%. This figure can be corrected depending on the purpose of the gas.

PSA GENERATOR
Production takes place through pressurized compressed air supplied by a screw-type air compressor. The generator is equipped with a filtration system and a dryer. The air dryer can be of the refrigerator type or adsorption type, depending on the purpose and the required nitrogen concentration. Compressed air undergoes coarse and fine purification as well as a dryer in the production process, whereby it reaches the dew point of +37.4 degrees Fahrenheit and the air class complies with ISO 8573-1:2010-1.4.1. The air is then supplied after a multi-stage filtration process to the generator. At the outlet of the nitrogen equipment we get ready gas at a pressure of up to 10 bar. The station consists of two columns, which contain an adsorbent to absorb the appropriate type of gas. Once every 8-15 years the adsorbent needs to be replaced, depending on operating conditions.
Advantages of nitrogen generators of adsorption type:

long operating life;
quick startup / shutdown;
ease of operation;
compactness;
high reliability;
no need for operator's control during operation;
full automation;
possibility of remote control;
MEMBRANE GENERATOR
The gasses are separated by a gas separation membrane. The filtered air passes through the membrane module. The flow passes through thousands of selective fibers. Nitrogen exits from the back side of the membrane, and oxygen exits through the membrane walls.

Nitrogen production involves the skilled installation of a complete set of equipment that requires compliance with safety regulations.

The nitrogen production equipment that we supply has components from certified manufacturers and is tested to meet high quality and safety standards for industrial units.

This equipment allows you to achieve high energy efficiency in the production of nitrogen, which is used in various industries:

electronic;
food;
metalworking;
pharmaceutical;
metallurgy;
oil and gas;
petrochemical and chemical industries.
By purchasing nitrogen production equipment in our company, you get favorable prices, warranty, fast delivery and installation.

HOW TO CHOOSE EQUIPMENT FOR NITROGEN PRODUCTION?
In order to choose the type of air separation equipment it is necessary to understand what they are:

There are currently three types of air separation systems for obtaining technical gases from atmospheric air:

Cryogenic-type air separation systems.
Air separation systems of the adsorption type.
Membrane type air separation systems.
Air separation systems of cryogenic type - a complex of equipment carrying out sequential processing and cooling of atmospheric air to cryogenic temperatures and subsequent separation by rectification into components: oxygen, nitrogen, argon, krypton and xenon.

Cryogenic air separation systems are subdivided into:

Small = up to 1000 SCFH;
Medium = 1000 ÷ 10 000 SCFH;
High > 10 000 SCFH;
Adsorption type air handling unit is a set of equipment that separates atmospheric air by passing it through a molecular sieve, which by its structure can hold gas molecules. Adsorption air separation systems are designed to produce the main separation products in gaseous state:

Oxygen;
Nitrogen.
The capacity of adsorption systems is not limited and depends on the number of modules used, but there are restrictions on the concentration (purity) of separation products:

Oxygen gas concentration at the outlet up to 98%
Nitrogen gas concentration at the outlet up to 99,9995%
Membrane switchgear is a complex of equipment that separates compressed air by passing it through the membrane modules in which the separation into the basic components: nitrogen and oxygen takes place. Membrane air separation units are designed to produce separation products in gaseous state. The capacity of the membrane units depends on the number of membrane modules used.

Concentration of gaseous oxygen at the outlet is up to 90%.
The output concentration of gaseous nitrogen is up to 99.5%.
Cryogenic gasifiers are also used to produce gaseous gasses at the place of consumption, which in turn convert liquid cryo-products (nitrogen, oxygen or argon) into gaseous state.

WHAT KIND OF AIR SEPARATION SYSTEM IS TO BE USED FOR NITROGEN PRODUCTION?

In order to choose air separation system, it is necessary to know the following parameters:

Consumption of gaseous nitrogen SCFH;
Nitrogen pressure, psig;
Nitrogen concentration, % or oxygen residual fraction;
Peak consumption, number of "peaks", duration and periodicity;
Installation options (outdoor, indoor...);
Existing communications;
Remoteness from the property;
The schedule of work (consumption);
Existence of staff.

Selection of a nitrogen source is a complex and demanding task, the efficiency of production processes and the cost of the final product depends on the right choice.

Currently the market of adsorption nitrogen generators is rapidly developing and in the areas where gaseous nitrogen is required this type of generators shows the lowest production nitrogen cost, which is ~0.3 kW per 35 cubic feet of nitrogen.

Safe Equip

11/21/2022

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