Now the market of nitrogen machine is changing, and enterprises have encountered a lot of problems when choosing, so how can we buy a suitable nitrogen machine when choosing? The market of nitrogen machine is dazzling, how to choose has become our current resistance, we must overcome these difficulties. Finding a good quality nitrogen machine is now an urgent matter.

In so many products, how can we choose a satisfactory nitrogen machine? When we choose to buy a business, we choose a company with excellent quality. It has a good reputation, and the service is very thoughtful, when it is used, it will give you some valuable advice. When you encounter a problem, it will teach you how to solve it. In this way, the products we buy will have favorable protection. Otherwise, if there is a quality problem, we will encounter the phenomenon that there is no way to complain.

The key points that should be paid attention to when choosing a nitrogen maker:

First of all, before determining the specific model specifications (that is, the amount of nitrogen produced per hour, nitrogen purity, outlet pressure, dew point), we should focus on the performance and characteristics of the nitrogen machine for a comprehensive comparative analysis, and at the same time to make the right choice for their existing environmental conditions.

Comparison between various nitrogen machines

Cryogenic air separation nitrogen machine

Nitrogen production by cryogenic air separation is a traditional method of nitrogen production, which has a history of recent decades. It takes air as raw material, after compression, purification, and then heat exchange to liquefy the air into liquid air. Liquid-air is mainly a mixture of liquid oxygen and liquid nitrogen, using the boiling point of liquid oxygen and liquid nitrogen is different (at 1 atmospheric pressure, the boiling point of the former is -183 ° C, the latter is -196 ° C), through the distillation of liquid-air, so that they are separated to obtain nitrogen. The cryogenic air separation nitrogen equipment is complex, occupies a large area, has high infrastructure costs, more one-time investment in equipment, higher operating costs, slow gas production (12 ~ 24h), high installation requirements and long cycle. Comprehensive equipment, installation and infrastructure factors, equipment below 3500Nm3 / h, PSA equipment of the same specification is 20% to 50% lower than cryogenic air separation equipment. The cryogenic air separation nitrogen device is suitable for large-scale industrial nitrogen production, while the medium and small-scale nitrogen production is uneconomical.

Pressure swing adsorption nitrogen making machine

With air as raw material, carbon molecular sieve as adsorbent, the use of pressure swing adsorption principle, the use of carbon molecular sieve on oxygen and nitrogen selective adsorption and nitrogen separation method, commonly known as PSA nitrogen production. This method is a new nitrogen production technology developed rapidly in the 1970s. Compared with the traditional nitrogen production method, it has the characteristics of simple process, high degree of automation, fast gas production (15 ~ 30 minutes), low energy consumption, product purity can be adjusted in a large range according to the needs of users, easy operation and maintenance, low operating cost, and strong adaptability of the device, so it is very competitive in the nitrogen production equipment below 1000Nm3 / h. More and more popular with small and medium nitrogen users, PSA nitrogen has become the preferred method for small and medium nitrogen users.

Membrane air separation nitrogen machine

Using air as raw material, under certain pressure conditions, oxygen and nitrogen gas with different properties in the membrane have different penetration rates to separate oxygen and nitrogen. Compared with other nitrogen production equipment, it has the advantages of simpler structure, smaller volume, no switching valve, less maintenance, faster gas production (≤3 minutes), convenient capacity increase, etc. It is especially suitable for medium and small nitrogen users with nitrogen purity ≤ 98%, and has the best functional price ratio. When the nitrogen purity is more than 98%, its price is more than 15% higher than that of the PSA nitrogen maker of the same specification

First, the nitrogen machine is compared and analyzed from the following aspects:

1. The rationality of the whole system design;

2. Carbon molecular sieve filling technology and pressing method;

3. Control valve service life;

Second, the factors affecting the cost of nitrogen machine:

1. A one-time investment in the entire system;

2. Service life of molecular sieve;

3. The life and cost of the parts required during use;

4. Operation and maintenance costs and electricity, water and compressed air consumption;

Third, the factors affecting the stability of the nitrogen machine: the nitrogen machine is a high-tech product involving machinery, electricity and instrumentation, and the stability of the equipment is particularly important in long-term use.

So how to choose a nitrogen machine, the following are a few points to note:

1, first of all, to determine which products you will buy the nitrogen machine to be used for packaging. Different products have different requirements for nitrogen purity, some nitrogen manufacturers have many product specifications, and the price of different specifications of equipment is not the same. Many companies in the purchase of nitrogen machine, hope that a equipment can be applied to all their own varieties of applicable requirements, which is also the psychological needs of each entrepreneur.

2, high cost performance is the first principle. At present, the quality of domestic production of food nitrogen machines has been greatly improved than before, especially modular nitrogen machines, the proportion of exports has been much higher than imports, so the price of domestic machines can completely buy the quality of imported machines.

3, if there are field visits, we should pay attention to the big aspects, but also pay attention to the small details, often the details determine the quality of the machine. Welcome customers to visit our company.

4, in terms of after-sales service, "circle" to have a good reputation. After-sales service is timely and on call, especially for food processing enterprises. If the mooncake enterprise only has a short production period of two months each year, if the nitrogen machine has a problem in the production can not be solved immediately, the loss can be imagined.

5, as far as possible to buy simple operation, easy maintenance, complete accessories, highly modular nitrogen machine, suitable for the long-term development of enterprises. When choosing a nitrogen machine, if these points can be fully taken into account, it is bound to bring relatively large benefits.