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Preparing method of liquid gas

A liquid gas and equipment technology, applied in the field of liquid gas preparation, can solve the problems of complex preparation process and high equipment cost, and achieve the effects of low equipment cost, guaranteed stability, and convenient preparation of liquid gas

Inactive Publication Date: 2014-08-06
NANTONG TIANYUAN GAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nitrogen, oxygen, and inert gases can be distilled from liquid air, but now when preparing liquid gases, the cost of equipment used is relatively high, and the preparation process is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0022] The embodiment of the preparation method of a kind of liquid gas of the present invention comprises the following steps:

[0023] A. Check the sealing gas pressure, oil supply pressure and oil circuit patency of the two expanders;

[0024] B. Provide cooling water to the supercharged air cooler and circulating compressor cooler in the two expanders;

[0025] C. Start the cycle compressor;

[0026] D. Start the first expander: When gradually opening the main valve of the first expander, slowly open the adjustable nozzle valve at the inlet of the first expander. After adjusting the opening, let the first expander run for 10-15 minutes. Observe the stability of the equipment;

[0027] E. Start the second expander: open the main valve of the second expander, then slowly open the adjustable nozzle valve of the second expander, and pay attention to the operating status of the first expander at this time;

[0028] F. After all the equipment starts to run stably, adjust the ...

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PUM

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Abstract

The invention relates to a preparing method of liquid gas. Sealing gas pressure, oil supply pressure and oil way smoothness of two expansion machines are detected; cooling water is provided for pressurizing gas coolers and recycle compressor coolers in the two expansion machines; a recycle compressor is started; a first expansion machine is started, a second expansion machine is started; when all equipment is started and operates stably, operation adjusting of final designing states is carried out, meanwhile, the opening degree of a head valve of the first expansion machine is adjusted, and the gas regeneration mount of a purifier is guaranteed; and the liquid gas is prepared. The two expansion machines and the recycle compressor are used, accurate control over valves is achieved, the liquid gas can be prepared conveniently, and equipment cost is low.

Description

technical field [0001] The invention relates to a method for preparing liquid gas. Background technique [0002] Air is a mixture of 78.01% nitrogen, 20.9% oxygen, and rare gases such as argon, neon, xenon, and krypton. Liquid air is formed by liquefying air. Nitrogen, oxygen, and inert gases can be distilled from liquid air. However, when preparing liquid gases, the cost of equipment used is relatively high and the preparation process is complicated. Contents of the invention [0003] The purpose of the present invention is to overcome the above disadvantages and provide a method for preparing a liquid gas that is easy to operate and low in cost. [0004] The object of the present invention is achieved through the following technical solutions: a method for preparing liquid gas, comprising the following steps: [0005] Include the following steps: [0006] A. Check the sealing gas pressure, oil supply pressure and oil circuit patency of the two expanders; [0007] B. ...

Claims

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Application Information

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IPC IPC(8): F25J1/02
Inventor 张树银杨峰
Owner NANTONG TIANYUAN GAS