CN102976291A - Variable pressure adsorption nitrogen production equipment and method thereof - Google Patents
Variable pressure adsorption nitrogen production equipment and method thereof Download PDFInfo
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- CN102976291A CN102976291A CN2012104624310A CN201210462431A CN102976291A CN 102976291 A CN102976291 A CN 102976291A CN 2012104624310 A CN2012104624310 A CN 2012104624310A CN 201210462431 A CN201210462431 A CN 201210462431A CN 102976291 A CN102976291 A CN 102976291A
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Abstract
The invention discloses pressure swing adsorption nitrogen production equipment and a method of the pressure swing adsorption nitrogen production equipment. The pressure swing adsorption nitrogen production equipment comprises a base seat, a left absorbing tower, a right absorbing tower, an air tank, a buffering tank, an air filter, a pressure gauge, a left controlling valve, a right controlling valve, a lower pressure equaling valve, an upper pressure equaling valve, a back-flushing valve, a left air-intake valve, a right air-intake valve, a left air-scavenging valve, a right air-scavenging valve, a air suction valve and a right air suction valve. The pressure swing adsorption nitrogen production equipment and the method of the pressure swing adsorption nitrogen production equipment are suitable for the industrial field, and occasions in need of separating nitrogen with high efficiency. Air after being compressed is transported into the left absorbing tower and the right absorbing tower through the controlling valve, air separation is achieved by the pressure swing adsorption of the absorbing towers, and therefore high-purified nitrogen is acquired at an air outlet. The nitrogen is transported into the buffering tank for a short time through a transporting pipeline. The pressure swing adsorption nitrogen production equipment and the method of the pressure swing adsorption nitrogen production equipment is simple in structure, low in equipment amount, small in occupied area, and convenient to install, and small-sized pressure swing adsorption nitrogen production equipment can be manufactured into an integrated mobile type.
Description
Technical field
The present invention relates to THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, relate in particular to a kind of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE and method thereof.
Background technology
Asked in 10 years in the past, pressure swing adsorption has been obtained develop rapidly in the gas delivery field, is widely used as separation and produces the multiple gases mixture that is comprised of hydrogen, helium, argon gas, carbon monoxide, carbonic acid gas, methane, oxynitride, oxygen and nitrogen etc.; Unstripped gas as fractionation by adsorption comprises air, refinery's discharging gas, underground fermentation heap, stack gas and Sweet natural gas.At present abroad to the increase in demand of making nitrogen by pressure swing adsorption gas consumption, nitrogen market expanding day, Application Areas is progressively widened.Since variable-pressure adsorption equipment exist supporting simple, operational safety is reliable, start-stop easily quick, floor space is little, energy consumption is lower, be convenient to the characteristics such as portable skid, thereby has very strong competitive power.
At present domesticly be engaged in that producer that THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE produces reaches three, Si Shijia, but device capability and performance, state of the art is uneven, compare with external variable-pressure adsorption equipment, all there is obvious deficiency from many-sides such as unit scale, product purity, control device and visual appearancies, compare with external equipment, also have very large gap.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE and method thereof are provided.
THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE comprises base, left adsorption tower, left inspiration air valve, back-flushing valve, right inspiration air valve, left scavenging air valve, right scavenging air valve, surge tank, left sucking-off air valve, upper equalizing valve, right sucking-off air valve, air filter, air vessel, pressure valve, right adsorption tower, right control valve, lower equalizing valve, left control valve; Base is provided with left adsorption tower, surge tank, air vessel, right adsorption tower, air vessel is provided with air filter, pressure valve, pressure valve links to each other with an end of lower equalizing valve, one end of the other end of lower equalizing valve and left control valve, one end of right control valve links to each other, left inspiration air valve one end links to each other with the other end of left control valve, right inspiration air valve one end links to each other with the other end of right control valve, one end of back-flushing valve and the left inspiration air valve the other end, the other end of right inspiration air valve links to each other, the other end of back-flushing valve and left scavenging air valve one end, right scavenging air valve one end links to each other, the inlet mouth of left adsorption tower links to each other with the other end of left scavenging air valve, the inlet mouth of right adsorption tower links to each other with the other end of right scavenging air valve, the air outlet of left adsorption tower links to each other with left sucking-off air valve one end, the air outlet of right adsorption tower links to each other with right sucking-off air valve one end, upper equalizing valve one end and the left sucking-off air valve the other end, the other end of right sucking-off air valve links to each other, and the other end of upper equalizing valve links to each other with the inlet mouth of surge tank.
In described left adsorption tower and the right adsorption tower carbonaceous molecular sieve is installed.
Nitrogen making method by pressure swing adsorption may further comprise the steps:
1) be 0.8MPa pressurized air access air filter with pressure, open air vessel inlet mouth switch, filtered pressurized air enters air vessel thus;
2) force value of adjusting pressure valve is to 0.6MPa, and under the effect of 0.6MPa adsorptive pressure, the pressurized air in the air vessel progressively enters left adsorption tower and right adsorption tower by pressure valve;
When 3) left adsorption tower is worked, left control valve, left inspiration air valve and left sucking-off air valve are opened, pressurized air enters left adsorption tower through left control valve and left inspiration air valve, pressure in the tower is increased to 0.6MPa, contained carbonic acid gas, oxygen are by the high performance carbon molecular sieve adsorption in the left adsorption tower in the air, the nitrogen of absorption does not enter surge tank by left sucking-off air valve, and the time length is 20 seconds;
4) approach when saturated when the absorption of left adsorption tower, left sucking-off air valve is closed, and upper equalizing valve and lower equalizing valve are opened, and the gas in the left adsorption tower enters right adsorption tower makes internal pressure reach equilibrium, and the time length is 3 seconds;
5) after left adsorption tower and right adsorption tower are all pressed end, left control valve, left sucking-off air valve, upper equalizing valve, lower equalizing valve and back-flushing valve are closed, right control valve, right inspiration air valve and right sucking-off air valve are opened, pressurized air enters right adsorption tower through right control valve and right inspiration air valve, carbonic acid gas, oxygen contained in the air are adsorbed by the carbonaceous molecular sieve in the right adsorption tower, its control of purity of nitrogen of absorption is not between 95% to 99%, nitrogen enters surge tank by right sucking-off air valve, and the time length is 20 seconds;
6) simultaneously, left scavenging air valve and back-flushing valve are opened, in the left adsorption tower decompress(ion) releasing oxygen and carbonic acid gas in atmosphere, discharge complete after, again enter pressure equalizing, always the circulation go down.
Use the present invention, easy for installation, technique is simple, facility compact, and floor space is little, and start-stop is convenient, starts rapidly, and aerogenesis is fast, and energy consumption is little, and running cost is low, and level of automation is high, convenient operating maintenance, skid is convenient, specially the basis.This equipment can be realized automatic control when operation, need not execute-in-place; Only need regulate simply product tolerance, can change purity, starting and stopping only needs push-botton operation.Simultaneously, this corrective maintenance workload is few, and reliability is high, and stability is strong, and the occasion that is in great demand at the industrial circle gas generation suits very much.
Description of drawings
Fig. 1 is the main TV structure synoptic diagram of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE;
Fig. 2 is the plan structure synoptic diagram of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE;
Fig. 3 is the synoptic diagram of the left and right sides of the present invention adsorption tower;
Among the figure, base 1, left adsorption tower 2, left inspiration air valve 3, back-flushing valve 4, right inspiration air valve 5, left scavenging air valve 6, right scavenging air valve 7, surge tank 8, left sucking-off air valve 9, upper equalizing valve 10, right sucking-off air valve 11, air filter 12, air vessel 13, pressure valve 14, right adsorption tower 15, right control valve 16, lower equalizing valve 17, left control valve 18.
Embodiment
As Figure 1-3, THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE comprises base 1, left adsorption tower 2, left inspiration air valve 3, back-flushing valve 4, right inspiration air valve 5, left scavenging air valve 6, right scavenging air valve 7, surge tank 8, left sucking-off air valve 9, upper equalizing valve 10, right sucking-off air valve 11, air filter 12, air vessel 13, pressure valve 14, right adsorption tower 15, right control valve 16, lower equalizing valve 17, left control valve 18; Base 1 is provided with left adsorption tower 2, surge tank 8, air vessel 13, right adsorption tower 15,13 are provided with air filter 12 on the air vessel, pressure valve 14, pressure valve 14 links to each other with an end of lower equalizing valve 17, one end of the other end of lower equalizing valve 17 and left control valve 18, one end of right control valve 16 links to each other, left inspiration air valve 3 one ends link to each other with the other end of left control valve 18, right inspiration air valve 5 one ends link to each other with the other end of right control valve 16, one end of back-flushing valve 4 and left inspiration air valve 3 the other ends, the other end of right inspiration air valve 5 links to each other, the other end of back-flushing valve 4 and left scavenging air valve 6 one ends, right scavenging air valve 7 one ends link to each other, the inlet mouth of left adsorption tower 2 links to each other with the other end of left scavenging air valve 6, the inlet mouth of right adsorption tower 15 links to each other with the other end of right scavenging air valve 7, the air outlet of left adsorption tower 2 links to each other with left sucking-off air valve 9 one ends, the air outlet of right adsorption tower 15 links to each other with right sucking-off air valve 11 1 ends, upper equalizing valve 10 1 ends and left sucking-off air valve 9 the other ends, the other end of right sucking-off air valve 11 links to each other, and the other end of upper equalizing valve 10 links to each other with the inlet mouth of surge tank 8.
In described left adsorption tower 2 and the right adsorption tower 15 carbonaceous molecular sieve is installed.
Nitrogen making method by pressure swing adsorption may further comprise the steps:
1) be 0.8MPa pressurized air access air filter 12 with pressure, open air vessel 13 inlet mouth switches, filtered pressurized air enters air vessel 13 thus;
2) force value of adjusting pressure valve 14 is to 0.6MPa, and under the effect of 0.6MPa adsorptive pressure, the pressurized air in the air vessel 13 progressively enters left adsorption tower 2 and right adsorption tower 15 by pressure valve 14;
When 3) left adsorption tower 2 is worked, left control valve 18, left inspiration air valve 3 and left sucking-off air valve 9 are opened, pressurized air enters left adsorption tower 2 through left control valve 18 and left inspiration air valve 3, pressure in the tower is increased to 0.6MPa, contained carbonic acid gas, oxygen are by the high performance carbon molecular sieve adsorption in the left adsorption tower 2 in the air, the nitrogen of absorption does not enter surge tank 8 by left sucking-off air valve 9, and the time length is 20 seconds;
4) approach when saturated when 2 absorption of left adsorption tower, left sucking-off air valve 9 is closed, and upper equalizing valve 10 and lower equalizing valve 17 are opened, and the gas in the left adsorption tower 2 enters right adsorption tower 15 makes internal pressure reach equilibrium, and the time length is 3 seconds;
5) when left adsorption tower 2 and right adsorption tower 15 all press finish after, left control valve 18, left sucking-off air valve 5, upper equalizing valve 10, lower equalizing valve 17 and back-flushing valve 4 are closed, right control valve 16, right inspiration air valve 5 and right sucking-off air valve 11 are opened, pressurized air enters right adsorption tower 15 through right control valve 16 and right inspiration air valve 5, carbonic acid gas, oxygen contained in the air are adsorbed by the carbonaceous molecular sieve in the right adsorption tower 15, its control of purity of nitrogen of absorption is not between 95% to 99%, nitrogen enters surge tank 8 by right sucking-off air valve 11, and the time length is 20 seconds;
6) simultaneously, left scavenging air valve 6 and back-flushing valve 4 are opened, in the left adsorption tower 2 decompress(ion) releasing oxygen and carbonic acid gas in atmosphere, discharge complete after, again enter pressure equalizing, always the circulation go down.
Claims (3)
1. a THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE is characterized in that comprising base (1), left adsorption tower (2), left inspiration air valve (3), back-flushing valve (4), right inspiration air valve (5), left scavenging air valve (6), right scavenging air valve (7), surge tank (8), left sucking-off air valve (9), upper equalizing valve (10), right sucking-off air valve (11), air filter (12), air vessel (13), pressure valve (14), right adsorption tower (15), right control valve (16), lower equalizing valve (17), left control valve (18); Base (1) is provided with left adsorption tower (2), surge tank (8), air vessel (13), right adsorption tower (15), air vessel (13) is provided with air filter (12), pressure valve (14), pressure valve (14) links to each other with an end of lower equalizing valve (17), one end of the other end of lower equalizing valve (17) and left control valve (18), one end of right control valve (16) links to each other, left inspiration air valve (3) one ends link to each other with the other end of left control valve (18), right inspiration air valve (5) one ends link to each other with the other end of right control valve (16), one end of back-flushing valve (4) and left inspiration air valve (3) the other end, the other end of right inspiration air valve (5) links to each other, the other end of back-flushing valve (4) and left scavenging air valve (6) one ends, right scavenging air valve (7) one ends link to each other, the inlet mouth of left adsorption tower (2) links to each other with the other end of left scavenging air valve (6), the inlet mouth of right adsorption tower (15) links to each other with the other end of right scavenging air valve (7), the air outlet of left adsorption tower (2) links to each other with left sucking-off air valve (9) one ends, the air outlet of right adsorption tower (15) links to each other with right sucking-off air valve (11) one ends, upper equalizing valve (10) one ends and left sucking-off air valve (9) the other end, the other end of right sucking-off air valve (11) links to each other, and the other end of upper equalizing valve (10) links to each other with the inlet mouth of surge tank (8).
2. a kind of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE according to claim 1 is characterized in that in described left adsorption tower (2) and the right adsorption tower (15) carbonaceous molecular sieve being installed.
3. one kind is used the as claimed in claim 1 nitrogen making method by pressure swing adsorption of equipment, it is characterized in that may further comprise the steps:
1) be 0.8MPa pressurized air access air filter (12) with pressure, open air vessel (13) inlet mouth switch, filtered pressurized air enters air vessel (13) thus;
2) force value of adjusting pressure valve (14) is to 0.6MPa, and under the effect of 0.6MPa adsorptive pressure, the pressurized air in the air vessel (13) progressively enters left adsorption tower (2) and right adsorption tower (15) by pressure valve (14);
When 3) left adsorption tower (2) is worked, left control valve (18), left inspiration air valve (3) and left sucking-off air valve (9) are opened, pressurized air enters left adsorption tower (2) through left control valve (18) and left inspiration air valve (3), pressure in the tower is increased to 0.6MPa, contained carbonic acid gas, oxygen are by the high performance carbon molecular sieve adsorption in the left adsorption tower (2) in the air, the nitrogen of absorption does not enter surge tank (8) by left sucking-off air valve (9), and the time length is 20 seconds;
4) when left adsorption tower (2) absorption when saturated, left sucking-off air valve (9) is closed, upper equalizing valve (10) and lower equalizing valve (17) are opened, and the gas in the left adsorption tower (2) enters right adsorption tower (15) makes internal pressure reach balanced, and the time length is 3 seconds;
5) when left adsorption tower (2) and right adsorption tower (15) all press finish after, left control valve (18), left sucking-off air valve (5), upper equalizing valve (10), lower equalizing valve (17) and back-flushing valve (4) are closed, right control valve (16), right inspiration air valve (5) and right sucking-off air valve (11) are opened, pressurized air enters right adsorption tower (15) through right control valve (16) and right inspiration air valve (5), contained carbonic acid gas in the air, oxygen is adsorbed by the carbonaceous molecular sieve in the right adsorption tower (15), its control of purity of nitrogen of absorption is not between 95% to 99%, nitrogen enters surge tank (8) by right sucking-off air valve (11), and the time length is 20 seconds;
6) simultaneously, left scavenging air valve (6) and back-flushing valve (4) are opened, in the left adsorption tower (2) decompress(ion) releasing oxygen and carbonic acid gas in atmosphere, discharge complete after, again enter pressure equalizing, circulate always.
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| CN2012104624310A CN102976291A (en) | 2012-11-16 | 2012-11-16 | Variable pressure adsorption nitrogen production equipment and method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894038A (en) * | 2014-03-27 | 2014-07-02 | 安徽华晶机械股份有限公司 | Product gas output device of high-purity and high-pressure gas preparation equipment |
| CN105947996A (en) * | 2016-06-15 | 2016-09-21 | 湖州南浔展辉分子筛厂 | System for preparing nitrogen and control method thereof |
| CN106040527A (en) * | 2016-05-30 | 2016-10-26 | 株洲南车机电科技有限公司 | Nitrogen filling vacuum pressure impregnation equipment and method |
| CN107311123A (en) * | 2017-08-14 | 2017-11-03 | 浙江华峰氨纶股份有限公司 | A kind of rich nitrogen of low latitude consumption reclaims nitrogen-making device and preparation method |
| CN109292739A (en) * | 2018-11-28 | 2019-02-01 | 凯迈（洛阳）气源有限公司 | A kind of miniature nitrogen-making device |
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| CN2361367Y (en) * | 1999-02-08 | 2000-02-02 | 温州瑞气空分设备有限公司 | Pressure swing adsorption gas separator |
| CN101318634A (en) * | 2007-06-06 | 2008-12-10 | 大阳日酸株式会社 | Low-purity nitrogen gas producing method |
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2012
- 2012-11-16 CN CN2012104624310A patent/CN102976291A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2361367Y (en) * | 1999-02-08 | 2000-02-02 | 温州瑞气空分设备有限公司 | Pressure swing adsorption gas separator |
| CN101318634A (en) * | 2007-06-06 | 2008-12-10 | 大阳日酸株式会社 | Low-purity nitrogen gas producing method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894038A (en) * | 2014-03-27 | 2014-07-02 | 安徽华晶机械股份有限公司 | Product gas output device of high-purity and high-pressure gas preparation equipment |
| CN103894038B (en) * | 2014-03-27 | 2016-02-03 | 安徽华晶机械股份有限公司 | The gas product output device of high-purity, high compacting gas equipment |
| CN106040527A (en) * | 2016-05-30 | 2016-10-26 | 株洲南车机电科技有限公司 | Nitrogen filling vacuum pressure impregnation equipment and method |
| CN106040527B (en) * | 2016-05-30 | 2019-11-12 | 株洲南车机电科技有限公司 | A kind of nitrogen charging Vacuum Pressure Impregnation Equipment and method |
| CN105947996A (en) * | 2016-06-15 | 2016-09-21 | 湖州南浔展辉分子筛厂 | System for preparing nitrogen and control method thereof |
| CN105947996B (en) * | 2016-06-15 | 2019-05-03 | 湖州南浔展辉分子筛厂 | A kind of system and its control method for producing nitrogen |
| CN107311123A (en) * | 2017-08-14 | 2017-11-03 | 浙江华峰氨纶股份有限公司 | A kind of rich nitrogen of low latitude consumption reclaims nitrogen-making device and preparation method |
| CN109292739A (en) * | 2018-11-28 | 2019-02-01 | 凯迈（洛阳）气源有限公司 | A kind of miniature nitrogen-making device |
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Application publication date: 20130320 |