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Syngas Generator The Use Of Security In The Process Of Existence
Jun 22, 2017

Syngas Generator in the course of the problems encountered are two more common, one is difficult to guarantee the reliability of the two. Its reliability is difficult to ensure that the performance of some of the generators in the purity is not enough, nitrogen and hydrogen in the water content is high and also with a certain degree of corrosion, if the operation will be back to the phenomenon of improper.

The above situation will cause the chromatograph is not easy to stabilize and reduce column efficiency and other phenomena, serious gas and column can be scrapped, and even lead to all scrapped scraper.

Second, the use of the process of security problems, some of the Syngas Generator compressor in the course of the use of overheating, gas into the oil, leakage and so on. Not only damage to the chromatograph, serious will endanger the safety of the operator.

Because the chromatograph uses high purity nitrogen or high purity hydrogen as the carrier gas, in order to deal with the above problems, we from the hydrogen generator, Syngas Generator and compressor safety and reliability of the three points to sum up the experience for your reference. Air as auxiliary gas, its purity is not high, after dehydration degreasing can basically meet the chromatographic analysis requirements, so today no longer detailed analysis.

First, the hydrogen generator is mainly composed of electrolysis system, pressure control system, purification system and display system

Electrolysis using the current membrane separation technology, by the infrared photoelectric feedback device and switching power supply pressure control system composed of the amount of hydrogen generated according to the needs of the output automatically adjust to maintain the output flow and pressure stability. The main problems with the use of hydrogen produced by this principle are:

1. Hydrogen generator with KOH aqueous solution produces high moisture content and is corrosive in hydrogen. It is easy to cause instability of chromatograph debugging. Once the hydrogen gas is used for a long time, the carrier gas will inevitably decrease.

2. The use of the principle of hydrogen generated if used for a long time, will cause serious back to the liquid phenomenon. In order to prevent back to the liquid, manufacturers have designed a variety of devices to try to solve this problem, but can not solve the fundamental problem. After all, it is necessary to add liquid, once the anti-back to the liquid device failure will cause the gas and column scrapped, serious and may even lead to all the gas scrapped.

3. Most of the purity of the gas has not been tested, although it can be through the baseline and column life to determine its purity, the result is to the column caused unnecessary losses. Therefore, hydrogen as auxiliary gas is also OK, so that the carrier gas purity is not enough. In the choice of hydrogen generator priority given to the quality of the manufacturer, you can also install the online purity detection device to ensure gas purity.

Secondly, the Syngas Generator can be well applied to gas chromatography analysis experiments, and the principle of the generator has a great relationship

The working principle of the Syngas Generator is roughly divided into three types:

1. The combination of electrochemical separation and physical adsorption

2. Use hollow fiber membrane separation

3. Separation by a new synthetic molecular sieve using gas chromatography

Electrochemical separation and physical adsorption:

The use of this principle produces a lot of nitrogen problems. The main questions are:

1. The Syngas Generator of the KOH aqueous solution produces high moisture content and is corrosive in the nitrogen gas.

2. There is a return phenomenon.

3. Nitrogen purity is low, the thermistor of the thermal conductivity detector of the chromatograph can cause oxidation, and the sensitivity of the thermal conductivity detector is reduced for a long time.

In view of the above three points of the problem, many chromatograph manufacturers, equipment dealers and maintenance personnel are not recommended to use the principle of generating Syngas Generator to do gas chromatograph carrier gas.

Using hollow fiber membrane method

Nitrogen film system can be low in the air from 78% to 95%, up to 99.9% of pure nitrogen. The Syngas Generator can be used for gas chromatograph gas carrier, only applicable to the analysis of components of the composition of the industry is not demanding.

Separation of new synthetic molecular sieves by gas chromatography

This is a new type of air separation method, which uses compressed air as raw material, synthetic molecular sieve as adsorbent, gas chromatographic separation adsorption process, at room temperature and low pressure, the use of air oxygen and nitrogen in the molecular sieve diffusion rate is different Oxygen and nitrogen to be separated, the purity of nitrogen and gas production can be adjusted according to customer needs. The gas flow rate is stable, nitrogen purification thoroughly, the output of high nitrogen purity, the highest can be 99.9995% pure nitrogen, suitable for a variety of gas chromatography detector. The generator can produce high quality and high purity nitrogen, stable and reliable, and does not require any chemical consumables. Easy to operate, can be 24 hours unattended. And it can operate without trouble and without any maintenance and minimum maintenance.

In summary, the use of gas chromatography separation technology with synthetic molecular sieve separation method of Syngas Generator is superior to the use of electrochemical separation and physical adsorption method and the hollow fiber membrane method of Syngas Generator. It can be used in a variety of different types of gas chromatography at home and abroad as a carrier gas, is a good performance and easy maintenance of a new generation of Syngas Generator.

Finally, in order to ensure the safe and reliable operation of the generator compressor, but also need to pay attention to two points

1. Because the compressor is an inductive load, the instantaneous current when the power is higher than the normal working several times higher, easier to fuse insurance. The start and stop of the compressor will cause interference to the grid voltage, so the power supply of the chromatograph and generator must be separated or powered by the regulated power supply. There are two situations in the course of work. The compression machine will stop working:

1) compressor temperature is too high thermal protection relay start;

2) Voltage instability causes circuit failure. So the use of generators not only need to ensure good ventilation environment, and the use of regulated power supply is particularly important.

2. Some manufacturers use the refrigerator compressor instead of air compressors, this practice in violation of the relevant national safety regulations, the use of the process will produce overheating, gas into the oil, leakage and other phenomena, damage to the chromatograph, serious Will endanger the safety of the operator. In the purchase of the generator must pay attention to whether the generator compressor meets the requirements.

Now excellent generator manufacturers, the production of the generator performance has been greatly improved, has emerged for 24 hours 365 days continuous operation of the generator. The generator uses multiple generators to supply the gas in parallel, monitor the status of each generator through the workstation, and measure the oxygen content. The generator can be used to monitor the working status of a single generator and automatically balance the load of a single generator. The supply of each generator. Once the monitoring system has found that the failure of a single generator is insufficient, the water level is low, the system will automatically stop the generator and adjust the generator load to all other generators. Maintenance and repair, the system monitoring generator state is intact, will automatically grid and gas supply. In addition to special chromatography needs high purity gas can not meet, but can replace the cylinder gas supply, and safe and stable, the quality is relatively more reliable.