Device for preparing nitrogen and control method thereof

A control method and nitrogen technology, applied in chemical instruments and methods, nitrogen compounds, nitrogen purification/separation, etc., can solve problems such as unstable pressure of nitrogen production equipment

Inactive Publication Date: 2016-11-09
宁德盈德气体有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to address the deficiencies in the above-mentioned technologies, and propose a device for producing nitrogen, aiming at solving the problem of unstable pressure in existing nitrogen production devices

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  • Device for preparing nitrogen and control method thereof

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] As shown in Fig. 1, the present invention provides a kind of device for producing nitrogen, comprises air compressor 1, filter 2, drier 3, separator and air storage 4 connected in sequence; filter 2 comprises liquid filter and dust filter , mainly to preliminarily filter the liquid and dust particles doped in the preliminary air, so as to avoid affecting the adsorption and purification in the subsequent process; it also includes a voltage stabilizer 13 and a pressure sensor; further, the pressure sensors are respectively arranged on the inner wall of the separator and the voltage stabilizer The inner wall of 13 is used to detect the pressure value of the voltage regulator 13 and the sepa...

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Abstract

The invention provides a device for preparing nitrogen. The device comprises an air compressor, a filter, a dryer, a separator and an air storage, wherein the air compressor, the filter, the dryer, the separator and the air storage are sequentially connected; the filter comprises a liquid filter body and a dust filter body; the device further comprises a voltage stabilizer and a pressure sensor. The voltage stabilizer is communicated with the separator through a first loop; a second loop is further arranged on the first loop; the first loop is provided with a first control valve; the second loop is provided with a second control valve; the pressure sensor is respectively arranged on the separator and the first loop. By means of the technical scheme, the production efficiency of preparing nitrogen can be effectively improved, and the influence of pressure floating on stabilization of the device is prevented; the nitrogen preparing device can be simplified, the flow-path plugging condition is reduced; the safety production efficiency is improved, the volume is also relatively small, and disassembling and repairing are convenient.

Description

technical field [0001] The invention belongs to the technical field of producing nitrogen, and in particular relates to a device for producing nitrogen and a control method thereof. Background technique [0002] Existing nitrogen production devices generally use high-quality carbon molecular sieves as adsorbents, and use the principle of pressure swing adsorption to directly obtain nitrogen from compressed air; under a certain pressure, due to dynamic effects, the diffusion rate of oxygen and nitrogen on carbon molecular sieves The difference is large. In a short period of time, oxygen molecules are adsorbed by carbon molecular sieves, and nitrogen molecules are enriched in the gas phase to achieve the separation of oxygen and nitrogen. However, since the carbon molecular sieve layer’s oxygen adsorption capacity varies significantly with pressure, reducing the pressure can desorb the oxygen molecules adsorbed by the carbon molecular sieve, so that the carbon molecular sieve ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/04
CPCC01B21/0461C01B2210/0017C01B2210/0045
Inventor 钱林月任剑英
Owner 宁德盈德气体有限公司
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