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Low-energy-consumption low-pressure oxygen-air separation device

A technology with low pressure and low energy consumption, which is applied in cold treatment separation, solidification, lighting and heating equipment, etc. It can solve the problems of small device scale, small pressurized flow rate, and small optional surface, so as to achieve high temperature and increase refrigeration amount, the effect of reducing the impact

Pending Publication Date: 2022-04-29
四川空分集团工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The scale of many devices is not very large. If the booster solution is adopted, the booster flow rate is small and the optional surface is small. The user hopes that the configuration of the dynamic equipment is simple, and the booster is not separately configured, and the liquid output is increased to improve the economy of the device. Using a single expander has a large gas volume and relatively high energy consumption. Therefore, a low-energy low-pressure pressure oxygen air separation unit is designed to optimize and improve the above problems

Method used

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  • Low-energy-consumption low-pressure oxygen-air separation device
  • Low-energy-consumption low-pressure oxygen-air separation device
  • Low-energy-consumption low-pressure oxygen-air separation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this example, if figure 1 As shown, it includes main heat exchanger 1, hot end booster turbo expander 2, hot end booster turbo expander booster 3, cold end booster turbo expander 4, cold end booster turbo expander Machine booster end 5, first cooler 6, oxygen supercharger 7, pressure tower 8, subcooler 9, low pressure tower 10 and purified air pipeline 11, purified air pipeline 11 communicates with purified air first branch pipeline 12, The purified air first branch pipeline 12 communicates with the oxygen supercharger 7 through the main heat exchanger 1, and the hot-end booster turbo expander 2 communicates with the expanded low-temperature purified air pipeline 14, and the expanded low-temperature purified air pipeline 14 It communicates with the pressure tower 8 through the main heat exchanger 1, and the cold-end booster turbo expander 4 communicates with the pressure tower 8 through the cold-end expansion air pipeline 21. The low-temperature pressure oxygen pipe...

Embodiment 2

[0022] In this example, if figure 2 As shown, compared with Embodiment 1, the difference is that the first branch pipeline 12 of purified air is communicated with the first pre-expansion low-temperature purified air pipeline 13, and the first pre-expansion low-temperature purified air pipeline 13 is connected with the hot end pressurized permeable The input end of the flat expander 2 is connected, and the output end of the supercharging end 3 of the hot end supercharging turbo expander is removed, and the output end of the supercharging end 3 of the supercharging turbo expander at the cold end is communicated with the input end of the supercharging end 5 of the cold end supercharging turbo expander through the purified air supercharging pipeline 17;

[0023] The second branch pipeline 23 of the purified air is adjusted to communicate with the input ends of the supercharging end 3 of the hot end supercharging turboexpander and the supercharging end 5 of the cold end superchargi...

Embodiment 3

[0027] In this example, if image 3 Shown, compared with embodiment one and embodiment two difference is:

[0028]The output end of the supercharging end 3 of the hot-end supercharging turboexpander is communicated with the second pre-expansion low-temperature purified air pipeline 25, and the second pre-expansion low-temperature purified air pipeline 25 passes through the second cooler 24 and the main heat exchanger 1 communicates with the input end of the hot end booster turbo expander 2, eliminating the output end of the hot end booster turbo expander 3 through the purified air booster pipeline 17 and the cold end booster turbo expander The input terminal of boost terminal 5 is connected;

[0029] The output end of the supercharging end 3 of the hot-end supercharging turboexpander is connected with the hot-end supercharging air pipeline 26, and the outer side of the hot-end supercharging air pipeline 26 is provided with a third cooler 27, and the hot-end supercharging The...

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Abstract

The invention discloses a low-energy-consumption low-pressure oxygen air separation device, and belongs to the technical field of air separation devices. Comprising a main heat exchanger, a hot end supercharging turbo expander, a hot end supercharging turbo expander supercharging end, a cold end supercharging turbo expander, a cold end supercharging turbo expander supercharging end, a first cooler, an oxygen supercharger, a pressure tower, a subcooler, a low-pressure tower and a purified air pipeline. The cooling capacity of cold fluid of the subcooler is recovered, the liquefaction amount of deoxidizing pressure pressurization heat source air is reduced, the influence on rectification and heat exchange is reduced, namely, the refrigerating capacity is increased, and therefore the liquid yield is increased. And the general energy consumption can be reduced by more than 8%.

Description

technical field [0001] The invention relates to an air separation device, in particular to a low-energy, low-pressure pressure oxygen air separation device, and belongs to the technical field of air separation devices. Background technique [0002] Some industrial fields, such as non-ferrous smelting, often use some air separation units with oxygen pressure of 200-400KPaG. [0003] The scale of many devices is not very large. If the booster solution is adopted, the booster flow rate is small and the optional surface is small. The user hopes that the configuration of the dynamic equipment is simple, and the booster is not separately configured, and the liquid output is increased to improve the economy of the device. Using a single expander has a large gas volume and relatively high energy consumption. Therefore, a low-energy, low-pressure pressure oxygen air separation plant is designed to optimize and improve the above problems. Contents of the invention [0004] The main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25J3/04
CPCF25J3/04054F25J3/04109F25J3/04624F25J3/04375F25J3/04296F25J3/0409F25J3/04103F25J3/04206F25J3/04175F25J3/04393F25J3/04412F25J2250/40F25J2250/50F25J3/042
Inventor 吴琦方亮李智赵静黄震宇
Owner 四川空分集团工程有限公司