CN102359977A - Filling material performance test system adopting liquid nitrogen throttling refrigeration device as cold source - Google Patents
Filling material performance test system adopting liquid nitrogen throttling refrigeration device as cold source Download PDFInfo
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- CN102359977A CN102359977A CN2011102525585A CN201110252558A CN102359977A CN 102359977 A CN102359977 A CN 102359977A CN 2011102525585 A CN2011102525585 A CN 2011102525585A CN 201110252558 A CN201110252558 A CN 201110252558A CN 102359977 A CN102359977 A CN 102359977A
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Abstract
The invention discloses a filling material performance test system adopting a liquid nitrogen throttling refrigeration device as a cold source. The filling material performance test system adopting a liquid nitrogen throttling refrigeration device as a cold source comprises a filling material performance test device, a liquid nitrogen throttling refrigeration device, a raw material storage tank, a plate-fin type heat exchanger, a reboiler and a flow control valve. The raw material storage tank is connected to a column bottom liquid inlet of the filling material performance test device by a pipe. A column bottom outlet of the filling material performance test device is connected to an inlet of the reboiler. An outlet of the reboiler is connected to a gas inlet of the filling material performance test device. A gas outlet located at the top of the filling material performance test device is connected to an inlet of a first heat exchange flow channel of the plate-fin type heat exchanger. An outlet of the first heat exchange flow channel is connected to a top liquid inlet of the filling material performance test device by a pipe. An inlet and an outlet of a second heat exchange flow channel of the plate-fin type heat exchanger are respectively connected to the liquid nitrogen throttling refrigeration device. The filling material performance test system adopting a liquid nitrogen throttling refrigeration device as a cold source has the advantages of high energy utilization rate, low pollution on the environment, and good operation stability.
Description
Technical field
The present invention relates to a kind of is the carrier performance test macro of low-temperature receiver with liquid nitrogen throttling refrigeration device, belongs to energy class Cryogenic air separation technical field.
Background technology
Since the seventies in 20th century twice " oil crisis ", energy problem has become the problem that the whole world is paid close attention to, is one of essential measure that solves energy problem and save energy and reduce the cost.Simultaneously, along with industry is fast-developing, all trades and professions sharply increase the demand of oxygen argon nitrogen, and are also increasing with gas and fluid volume.Therefore, under the requirement of air separation plant large scale development and low energy consumption, the application of structured packing in rectification column more and more widely.
Structured packing is a kind of filler of in tower, arranging, neatly piling up by even geometric figure; The characteristics of structured packing are to have stipulated gas, flow footpath, have improved gas, the liquid distribution situation of packing layer, and specific surface area is big; Have stronger processing power and heat and mass transfer performance; Have very low working resistance simultaneously, thereby reduce the air compressor machine discharge pressure, play energy-saving and cost-reducing effect.
State parameter has bigger influence to performances such as the efficient of structured packing, pressure drops; At present; The measurement of carrier performance is mainly relied on the filler proving installation of some normal temperature and pressures; Experimental result and the filler performance in actual space division system has very big difference, and is very limited to the effect that the optimal design of structured packing rectification column plays.
Summary of the invention
The objective of the invention is to be to overcome the deficiency of prior art, provide that a kind of what can test the actual performance of filler in space division system is the carrier performance test macro of low-temperature receiver with liquid nitrogen throttling refrigeration device.
The objective of the invention is to accomplish through following technical scheme; It mainly comprises: a carrier performance proving installation, is with liquid nitrogen throttling refrigeration device, a head tank, a plate type finned heat exchanger, a reboiler and a flowrate control valve; Described head tank is connected with the tower bottoms body charging aperture of said carrier performance proving installation through pipeline; The tower still discharging opening of described carrier performance proving installation is connected with said reboiler import, and the outlet of said reboiler is connected with said carrier performance proving installation gas feed mouth; Said carrier performance proving installation top gas material outlet is connected with the first heat exchange runner import of said plate type finned heat exchanger, and the outlet of this first heat exchange runner is connected through the liquid inlet opening of pipeline with carrier performance proving installation top; The second heat exchange runner import of said plate type finned heat exchanger with the outlet respectively at linking to each other with the liquid nitrogen restriction device.
Described carrier performance proving installation is an oxygen nitrogen low temperature self-equilibrating rectification column system; The described forcing pump that includes a feeding liquid nitrogen with liquid nitrogen throttling refrigeration device; This forcing pump is connected with a zone of heat liberation of a heat interchanger; This zone of heat liberation outlet links to each other with a high pressure fluid reservoir, and the outlet of high pressure fluid reservoir links to each other with a throttling valve, is connected to low-pressure cavity after the throttling valve; The liquid outlet of low-pressure cavity bottom links to each other with the said plate type finned heat exchanger second heat exchange runner, and this second heat exchange runner and the said first heat exchange runner are adjacent heat exchange and arrange.
Described low-pressure cavity top is provided with a gas vent and is connected with the plate type finned heat exchanger second heat exchange runner exit, and one reinstates pipeline and is connected in the cold fluid pass of said heat interchanger as pressurization back high-pressure liquid nitrogen low-temperature receiver.
The outlet of described head tank is provided with cryopump; And above the top vent of carrier performance proving installation, also be connected to a stop valve; On the pipeline of the said low-pressure cavity web joint fin heat exchanger second heat exchange runner, be connected to flowrate control valve in addition.
The present invention is through technology such as refrigeration, heat transfers, and the liquid nitrogen that temperature is higher transforms into the lower liquid nitrogen of temperature, as the low-temperature receiver of carrier performance proving installation; Restriction device is set in refrigeration system, makes, for the carrier performance proving installation cold is provided, realize the operation continuously under low temperature state of carrier performance proving installation through plate type finned heat exchanger through after the liquid nitrogen process restriction device throttling after the forcing pump pressurization; Through the low-temperature receiver of the gas nitrogen after the heat exchange as pressurization back high-pressure liquid nitrogen, carrier performance proving installation material recycles simultaneously, realizes the cascade utilization of energy, has improved rate of energy to greatest extent; Advantages such as therefore the present invention has the energy utilization rate height, environmental pollution is little, and is stable.
Description of drawings
Fig. 1 is a system of the present invention syndeton synoptic diagram.
Embodiment
To combine accompanying drawing that the present invention is done detailed introduction below: shown in Figure 1; The present invention mainly comprises: a carrier performance proving installation 4, is with liquid nitrogen throttling refrigeration device, a head tank 1, a plate type finned heat exchanger 6 and a reboiler 3; Described head tank 1 is connected with the tower bottoms body charging aperture of said carrier performance proving installation 4 through pipeline; The tower still discharging opening of described carrier performance proving installation 4 is connected with said reboiler 3 imports, and 3 outlets of said reboiler are connected with said carrier performance proving installation 4 gas feed mouths; Said carrier performance proving installation 4 top gas material outlets are connected with the first heat exchange runner import of said plate type finned heat exchanger 6, and the outlet of this first heat exchange runner is connected through the liquid inlet opening of pipeline with carrier performance proving installation 4 tops; The second heat exchange runner import of said plate type finned heat exchanger 6 with the outlet respectively at linking to each other with the liquid nitrogen restriction device.
Described carrier performance proving installation 4 is an oxygen nitrogen low temperature self-equilibrating rectification column system; The described forcing pump 12 that includes a feeding liquid nitrogen with liquid nitrogen throttling refrigeration device; This forcing pump 12 is connected with a zone of heat liberation of a heat interchanger 11; This zone of heat liberation outlet links to each other with a high pressure fluid reservoir 10, and the outlet of high pressure fluid reservoir 10 links to each other with a throttling valve 9, is connected to low-pressure cavity 8 after the throttling valve; The liquid outlet of low-pressure cavity bottom links to each other with the said plate type finned heat exchanger second heat exchange runner, and this second heat exchange runner and the said first heat exchange runner are adjacent heat exchange and arrange.
Described low-pressure cavity 8 tops are provided with a gas vent and are connected with the plate type finned heat exchanger second heat exchange runner exit, and one reinstates pipeline and is connected in the cold fluid pass of said heat interchanger as pressurization back high-pressure liquid nitrogen low-temperature receiver.
The outlet of described head tank is provided with cryopump, and is connected to a stop valve 2, with the amount of control raw material; And above the top vent of carrier performance proving installation 4, also be connected to a stop valve 5.On the pipeline of the said low-pressure cavity 8 web joint fin heat exchangers second heat exchange runner, be connected to flowrate control valve 7 in addition.
The concrete course of work is following: when the experiment beginning; Close stop valve 5; Open stop valve 2, material pot 1 outlet material enters into the tower still of carrier performance proving installation 4 through stop valve 2, closes stop valve 2 after reaching certain liquid level; The liquid of carrier performance proving installation 4 tower stills produces rising steam through reboiler 3 heating backs; Rising steam is condensed into the dirty liquid of liquid as carrier performance proving installation 4 through behind the heat and mass in plate type finned heat exchanger 6, the electrical heating power of maintenance tower still reboiler 3 and the refrigeration duty of cat head plate type finned heat exchanger 6 are constant, makes system reach stable (it is stable that rising steam and dirty strength of fluid keep).The cold of plate type finned heat exchanger 6 is provided by liquid nitrogen throttling refrigeration device; After the experiment beginning; Liquid nitrogen carries out heat interchange through forcing pump 12 pressurization backs with low temperature nitrogen in plate type finned heat exchanger 11, the high-pressure liquid nitrogen after the heat exchange enters into high pressure fluid reservoir 10, gets into low-pressure cavity 8 after 9 throttlings of high pressure fluid reservoir 10 outlet liquid nitrogen process throttling valve; The liquid outlet of low-pressure cavity 8 bottoms links to each other with plate type finned heat exchanger 6 imports; As the low-temperature receiver of cooling filler proving installation 4 top gas, the gas vent at low-pressure cavity 8 tops is connected with plate type finned heat exchanger 6 cold fluid side outlets, and the low temperature nitrogen after converging gets into the low-temperature receiver of plate type finned heat exchanger 11 as the high-pressure liquid nitrogen after pressurizeing.The size of uprising gas flow is by the electrical heating power control of reboiler, and the cold size of liquid nitrogen throttling refrigeration device has flowrate control valve 7 to control.
The present invention organically combines technology such as throttling refrigeration technology, heat transfer technology, rectifying self-equilibrating technology, automatic control; Realized filler performance test of (separation of oxygen nitrogen) under low temperature environment; Recycle material simultaneously; Realizing the cascade utilization of energy, is that a kind of energy utilization rate is high, little, the stable carrier performance test macro of environmental pollution.
Claims (4)
1. one kind is the carrier performance test macro of low-temperature receiver with liquid nitrogen throttling refrigeration device; It mainly comprises: a carrier performance proving installation, is with liquid nitrogen throttling refrigeration device, a head tank, a plate type finned heat exchanger and a reboiler; It is characterized in that described head tank (1) is connected with the tower bottoms body charging aperture of said carrier performance proving installation (4) through pipeline; The tower still discharging opening of described carrier performance proving installation (4) is connected with said reboiler (3) import, and said reboiler (3) outlet is connected with said carrier performance proving installation (4) gas feed mouth; Said carrier performance proving installation (4) top gas material outlet is connected with the first heat exchange runner import of said plate type finned heat exchanger (6), and the outlet of this first heat exchange runner is connected through the liquid inlet opening of pipeline with carrier performance proving installation (4) top; The second heat exchange runner import of said plate type finned heat exchanger (6) with the outlet respectively at linking to each other with the liquid nitrogen restriction device.
2. according to claim 1 is the carrier performance test macro of low-temperature receiver with liquid nitrogen throttling refrigeration device, it is characterized in that described carrier performance proving installation (4) is an oxygen nitrogen low temperature self-equilibrating rectification column system; The described forcing pump (12) that includes a feeding liquid nitrogen with liquid nitrogen throttling refrigeration device; This forcing pump (12) is connected with a zone of heat liberation of a heat interchanger (11); This zone of heat liberation outlet links to each other with a high pressure fluid reservoir (10); The outlet of high pressure fluid reservoir (10) links to each other with a throttling valve (9); Be connected to low-pressure cavity (8) after the throttling valve, the liquid outlet of low-pressure cavity bottom links to each other with the said plate type finned heat exchanger second heat exchange runner, and this second heat exchange runner and the said first heat exchange runner are adjacent heat exchange and arrange.
3. according to claim 2 is the carrier performance test macro of low-temperature receiver with liquid nitrogen throttling refrigeration device; It is characterized in that described low-pressure cavity (8) top is provided with a gas vent and is connected with plate type finned heat exchanger (6) second heat exchange runner exits, and one reinstates pipeline and is connected in the cold fluid pass of said heat interchanger (11) as pressurization back high-pressure liquid nitrogen low-temperature receiver.
4. according to claim 1 is the carrier performance test macro of low-temperature receiver with liquid nitrogen throttling refrigeration device, it is characterized in that the outlet of described head tank (1) is provided with cryopump; And also be connected to a stop valve (5) in the top vent of carrier performance proving installation (4) top; On the pipeline of said low-pressure cavity (8) the web joint fin heat exchanger second heat exchange runner, be connected to flowrate control valve (7) in addition.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255142A (en) * | 2020-10-19 | 2021-01-22 | 中国科学院理化技术研究所 | Liquid phase cold accumulation working medium test system and method |
| CN114295517A (en) * | 2021-11-22 | 2022-04-08 | 浙江大学 | Visual experimental apparatus for low-temperature working medium falling film flowing mass transfer |
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| US4869597A (en) * | 1988-06-13 | 1989-09-26 | Christopher Daniel E | Calorimeter |
| CN1786709A (en) * | 2005-11-02 | 2006-06-14 | 浙江大学 | System for testing performance of refrigerating agent containing oil |
| CN201464446U (en) * | 2009-04-03 | 2010-05-12 | 上海理工大学 | Packing performance testing device for full-automatic cooling tower |
| CN101738059A (en) * | 2009-12-22 | 2010-06-16 | 四川空分设备(集团)有限责任公司 | Method for reducing comprehensive energy consumption of air separation |
| CN101886871A (en) * | 2010-08-04 | 2010-11-17 | 四川空分设备(集团)有限责任公司 | Method and device for producing pressure oxygen by air separation |
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2011
- 2011-08-30 CN CN 201110252558 patent/CN102359977B/en active Active
Patent Citations (5)
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| US4869597A (en) * | 1988-06-13 | 1989-09-26 | Christopher Daniel E | Calorimeter |
| CN1786709A (en) * | 2005-11-02 | 2006-06-14 | 浙江大学 | System for testing performance of refrigerating agent containing oil |
| CN201464446U (en) * | 2009-04-03 | 2010-05-12 | 上海理工大学 | Packing performance testing device for full-automatic cooling tower |
| CN101738059A (en) * | 2009-12-22 | 2010-06-16 | 四川空分设备(集团)有限责任公司 | Method for reducing comprehensive energy consumption of air separation |
| CN101886871A (en) * | 2010-08-04 | 2010-11-17 | 四川空分设备(集团)有限责任公司 | Method and device for producing pressure oxygen by air separation |
Non-Patent Citations (1)
| Title |
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| 毛绍融: "采用规整填料塔及全精馏制氩技术的新一代大中型空分设备", 《中国工业气体工业协会第十次会员代表大会暨2000年年会文件及论文汇编》, 31 December 2000 (2000-12-31), pages 37 - 42 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255142A (en) * | 2020-10-19 | 2021-01-22 | 中国科学院理化技术研究所 | Liquid phase cold accumulation working medium test system and method |
| CN114295517A (en) * | 2021-11-22 | 2022-04-08 | 浙江大学 | Visual experimental apparatus for low-temperature working medium falling film flowing mass transfer |
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| CN102359977B (en) | 2013-06-12 |
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Address after: No.799, Xiangfu Road, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou oxygen generator group Co.,Ltd. Address before: 310004 No. 388 Dong Xin Road, Xiacheng District, Zhejiang, Hangzhou Patentee before: HANGZHOU HANGYANG Co.,Ltd. |
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Address after: 799 Xiangfu Road, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Patentee after: Hang Yang Group Co.,Ltd. Address before: 799 Xiangfu Road, Qingshanhu street, Lin'an District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou oxygen generator group Co.,Ltd. |