LDH nitrogen generator

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LDH nitrogen generator   Nitrogen is mainly used for annealing maintenance gas, sintering maintenance gas, nitriding treatment, furnace cleaning and purging gas, etc. It is widely used in the fields of metal heat treatment, powder metallurgy, magnetic data, copper processing, metal wire mesh, galvanized wire, semiconductor, powder recovery, etc. The nitrogen with purity more than 99.9% is produced by PSA nitrogen generator. After combined with nitrogen purification equipment, high quali...


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LDH nitrogen generator

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Nitrogen is mainly used for annealing maintenance gas, sintering maintenance gas, nitriding treatment, furnace cleaning and purging gas, etc. It is widely used in the fields of metal heat treatment, powder metallurgy, magnetic data, copper processing, metal wire mesh, galvanized wire, semiconductor, powder recovery, etc. The nitrogen with purity more than 99.9% is produced by PSA nitrogen generator. After combined with nitrogen purification equipment, high quality nitrogen with purity more than 99.9995% and dew point lower than – 65 ℃ is provided.

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The nitrogen source for heat treatment of nitrogen based atmosphere, such as sealing of steelmaking converter, top of blast furnace, injection of blast furnace iron powder, continuous casting and rolling, steel annealing, stress relief, aging, quenching and heating, carburizing, nitrocarburizing, soft nitriding, vacuum quenching, etc., maintenance Gas for welding and powder metallurgy sintering process, as well as cleaning and dilution gas.

LDH nitrogen generator

Beijing lidaheng Technology Development Co., Ltd. makes the following service commitments for the large-scale equipment supplied to your company: users enjoy the pre-sale, in sale and after-sale services of our company, the equipment purchased by users will be guaranteed free of charge in one year and repaired for life; and timely provide corresponding technical support and services.

 

1、 The products produced by the company have reached strict enterprise specifications and relevant specifications of the Ministry of construction of the people’s Republic of China.

2、 After receiving orders from customers, the company will organize production and delivery in strict accordance with relevant specifications, contract terms and other relevant regulations; ensure the product quality is up to standard and reliable, and arrive at the designated address on time.

3、 The majority of our customers enjoy the pre-sale, in sale and after-sale services of our customer service center; the warranty period of the equipment is one year from the date of delivery. During the warranty period, if the product is damaged or operates abnormally due to quality problems, the company will repair or exchange the product for free and provide corresponding maintenance and warranty knowledge; during the warranty period, if the product operates abnormally due to improper use of the user (force majeure elements are not included), or outside the warranty period, the company will provide lifelong maintenance services.

 

3、 Basic process flow of PSA nitrogen generation: the basic process flow diagram of PSA nitrogen generation machine air enters into the air storage tank after being compressed by air compressor, dedusted, degreased and dried, and then enters into the left adsorption tower through the air inlet valve and the left suction valve. The pressure of the tower increases, and the oxygen molecules in the compressed air are adsorbed by carbon molecular sieve, and the non adsorbed nitrogen passes through the adsorption bed and the left suction valve . the nitrogen production valve enters the nitrogen storage tank. This process is called left suction and lasts for tens of seconds. After the completion of the left absorption process, the left absorption tower and the right absorption tower are connected through the upper and lower pressure equalizing valves to make the pressure of the two towers reach equilibrium. This process is called pressure equalizing and lasts for seconds. After pressure equalizing, the compressed air enters the right adsorption tower through the air inlet valve and the right suction valve. The oxygen molecules in the compressed air are adsorbed by the carbon molecular sieve, and the enriched nitrogen enters the nitrogen storage tank through the right suction valve and the nitrogen production valve. This process is called right suction and lasts for tens of seconds. The oxygen adsorbed by the carbon molecular sieve in the left adsorption tower is released back to the atmosphere through the pressure reduction of the left exhaust valve, which is called desorption. On the contrary, when the left tower is adsorbed, the right tower is desorbed together. In order to make the oxygen released from the molecular sieve depressurization completely discharged into the atmosphere, nitrogen is blown out of the desorption adsorption tower through a normally open back purge valve, and the oxygen in the tower is blown out of the adsorption tower. This process is called blowback, and it works with desorption. After the right suction, it enters into the pressure equalizing process, then switches to the left suction process, and circulates continuously. The operation process of the nitrogen generator is completed by three two position five way pilot solenoid valves operated by the programmable controller, and then the opening and closing of eight pneumatic pipeline valves operated by the solenoid valves respectively. Three two position five way pilot solenoid valves control the left suction, equalizing pressure and right suction conditions respectively. The time flow of left suction, pressure equalizing and right suction is now stored in the programmable controller. In the case of power failure, the pilot gas of the three two position five way pilot solenoid valves is connected with the closing silence of the pneumatic pipeline valve. When the process is in the condition of left suction, the solenoid valve controlling the left suction is energized, and the pilot gas is connected to the opening of the left suction gas valve, the left suction gas production valve and the right exhaust valve, so that the three valves are opened, the left suction process is completed, and the right adsorption tower desorbs together. When the process is in the pressure equalizing state, the solenoid valve controlling the pressure equalizing is energized and other valves are closed; the pilot gas is connected to the opening of the upper and lower pressure equalizing valves, so that the two valves are opened and the pressure equalizing process is completed. When the process is in the right suction condition, the solenoid valve controlling the right suction is energized, and the pilot gas is connected to the opening of the right suction gas valve, the right suction gas production valve, and the left exhaust valve, so that the three valves are opened, the right suction process is completed, and the left adsorption tower desorbs together. In each process, except for the valve that should be opened, other valves should be closed.


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  • Beijing LDH Technology Development Co., Ltd is a company specializing in gas separation equipment. There are mainly integrated enterprises in the design, research and development, production and sales of nitrogen generators, oxygen generators, ozone generators and liquid nitrogen generator. In the years of production and sales, we have met friends from all over the world and established a good partnership. Products are exported to Bangladesh, Indonesia, Pakistan, the Netherlands, Brazil, Australia and other countries.

    The company has more than 10 years of experience in the professional technical team is engaged in gas design, research and development, to provide users with pre-sale, in-sale, after-sales technical support, including technical design, drawings, schedules, key projects, guidance installation, training, etc…Our equipment is subject to international standards. Before the equipment leaves the factory, we will conduct a comprehensive inspection and testing of each equipment so that each equipment can reach the standard before leaving the factory.

    Our working attitude is to make every reliable product, solve the actual problems of customers, make every beautiful product, let customers feel not only easy to use, but also good-looking.

    Our goal is to become the best enterprise in China’s gas separation industry. We have modern factories, modern production tools and young and passionate colleagues. We will strive to surpass ourselves and provide gas solutions for enterprises all over the world. We will use the best service to reflect our professionalism!

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