CN104291280A - High-efficiency molecular sieve nitrogen making machine - Google Patents

High-efficiency molecular sieve nitrogen making machine Download PDF

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Publication number
CN104291280A
CN104291280A CN201410496763.XA CN201410496763A CN104291280A CN 104291280 A CN104291280 A CN 104291280A CN 201410496763 A CN201410496763 A CN 201410496763A CN 104291280 A CN104291280 A CN 104291280A
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CN
China
Prior art keywords
valve
molecular sieve
nitrogen
adsorption tower
surge tank
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Pending
Application number
CN201410496763.XA
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Chinese (zh)
Inventor
王晓华
许维忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU JIAYU FLUID EQUIPMENT Co Ltd
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JIANGSU JIAYU FLUID EQUIPMENT Co Ltd
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Application filed by JIANGSU JIAYU FLUID EQUIPMENT Co Ltd filed Critical JIANGSU JIAYU FLUID EQUIPMENT Co Ltd
Priority to CN201410496763.XA priority Critical patent/CN104291280A/en
Publication of CN104291280A publication Critical patent/CN104291280A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a high-efficiency molecular sieve nitrogen making machine which comprises a compressed gas inlet (1), a purity analyzer (2), a first adsorption column (3) and a second adsorption column (4), wherein a buffer tank comprises a buffer tank gas inlet (5), a buffer tank gas outlet (6), a first cut-off valve (7), a second cut-off valve (8), a first one-way valve (9) and a second one-way valve (10); the gas inlet pipeline is connected with the gas outlet pipeline in parallel; the first one-way valve (9) and the second one-way valve (10) are opposite in direction; the purity analyzer (2) is communicated with an adsorption column set gas outlet pipeline (12) through a first solenoid valve (11); and the purity analyzer (2) is communicated with the buffer tank gas outlet (6) through a second solenoid valve (13). The high-efficiency molecular sieve nitrogen making machine has the advantage of no leakage in the production process, and further enhances the production efficiency on the premise of saving the resources.

Description

Heavy duty detergent system with molecular sieve for preparing nitrogen machine
Technical field
The present invention relates to nitrogen Preparation equipment, be specifically related to the obvious system with molecular sieve for preparing nitrogen machine of a kind of preparation efficiency.
Background technology
System with molecular sieve for preparing nitrogen machine is raw material with air, using carbonaceous molecular sieve as sorbent material, uses pressure-variable adsorption principle purification nitrogen, specifically utilizes carbonaceous molecular sieve to make the method for nitrogen and oxygen separating extract highly purified nitrogen to the selective adsorption of oxygen and nitrogen.
Traditional method is, when purity check instrument detects that nitrogen is defective, namely closes air outlet valve, opens blow-off valve simultaneously, by underproof for surge tank nitrogen emptying.This method exists following not enough, is that nitrogen emptying causes huge energy dissipation on the one hand; Consume a large amount of man-hours in emptying process on the other hand.Therefore, while wasting raw material, production efficiency is again reduced.
Also Patents document is had in this respect, through index publication number for " a kind of novel PSA Nitrogen plant " described in 203346077U wherein improves to some extent to above-mentioned emptying blind enema, specifically improved procedure returns to adsorption tower group from nitrogen buffer tank outlet extraction gas again to process.Adopt the method to eliminate above-mentioned loaded down with trivial details deflation course, while economizing on resources, production efficiency further increases.
Although the production efficiency of the invention that this patent provides improves, also there is certain weak point.Weak point is, owing to being return to adsorption tower group from nitrogen buffer tank outlet extraction gas again to process, owing to needing the delivery air blocking purity passing nitrogen in the process of process, opens the delivery air of nitrogen after band purity is up to standard again.Therefore the continuity that system is given vent to anger can not be ensured in process of production.
Summary of the invention
The deficiency of integrated background technology of the present invention provides a kind of novel system with molecular sieve for preparing nitrogen machine, and this Nitrogen plant can continuous release nitrogen, efficiently fast.
Invention increases following technical proposals: heavy duty detergent system with molecular sieve for preparing nitrogen machine, comprise compressed air inlet, nitrogen outlet, adsorption tower group, valve system, tubing system, purity check instrument, surge tank, described adsorption tower group comprises the first adsorption tower, the second adsorption tower, and described surge tank comprises surge tank inlet mouth, surge tank air outlet.
Principle of work is, the carbonaceous molecular sieve of high-quality is housed as sorbent material in described adsorption tower, under pressure, from air, produces nitrogen.Specifically be through the pressurized air of purge drying, in adsorber, carry out pressurized adsorbent, decompression desorption.Due to kinetic effect, rate of diffusion is much larger than nitrogen in carbonaceous molecular sieve micropore for oxygen, and when absorption does not reach balance, nitrogen is got up by enrichment in the gas phase, forms finished product nitrogen.Then be decompressed to normal pressure, other impurity such as the oxygen that sorbent material desorption adsorbs, realize regeneration.Arrange two adsorption towers in systems in which, another tower desorption and regeneration while nitrogen is produced in a tower absorption, by PLC procedure auto-control, makes two tower alternate cycles work, to realize the object of continuous seepage high-quality nitrogen.
Its unique distinction is, described saving type system with molecular sieve for preparing nitrogen machine also comprises the first stopping valve, the second stopping valve, the first check valve, the second check valve, and described first stopping valve is connected with described first check valve and formed gas stream inlet pipe road; Described second stopping valve is connected with described second check valve and is formed gas outflow lines.Described gas stream inlet pipe road is in parallel with described gas outflow lines; Described first check valve is contrary with the direction of described second check valve.
On this basis, described purity check instrument is connected with adsorption tower group gas outlet duct by the first magnetic valve.Described purity check instrument is connected with described surge tank air outlet by the second magnetic valve.
Beneficial effect of the present invention: newly purify owing to carrying out back tower weight at surge tank inlet mouth, ensure that the up to standard of nitrogen gas purity in tank, therefore continuous air feed can be carried out in surge tank air outlet.No leakage in production process, further increases production efficiency while having saved resource.
Accompanying drawing explanation
Accompanying drawing is the structural representation of heavy duty detergent system with molecular sieve for preparing nitrogen machine of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
In accompanying drawing: compressed air inlet 1, purity check instrument 2, first adsorption tower 3, second adsorption tower 4, surge tank inlet mouth 5, surge tank air outlet (6), the first stopping valve 7, second stopping valve 8, first check valve 9, second check valve 10, first magnetic valve 11, adsorption tower group gas outlet duct 12, second magnetic valve 13.
Heavy duty detergent system with molecular sieve for preparing nitrogen machine, comprise compressed air inlet 1, nitrogen outlet, adsorption tower group, valve system, tubing system, purity check instrument 2, surge tank, described adsorption tower group comprises the first adsorption tower 3, second adsorption tower 4, described surge tank comprises surge tank inlet mouth 5, surge tank air outlet 6, it is characterized in that, described saving type system with molecular sieve for preparing nitrogen machine also comprises the first stopping valve 7, second stopping valve 8, first check valve 9, second check valve 10, and described first stopping valve 7 is connected with described first check valve 9 and formed gas stream inlet pipe road; Described second stopping valve 8 is connected with described second check valve 10 and is formed gas outflow lines; Described gas stream inlet pipe road is in parallel with described gas outflow lines; Described first check valve 9 is contrary with the direction of described second check valve 10.
Described purity check instrument 2 is connected with adsorption tower group gas outlet duct 12 by the first magnetic valve 11; Described purity check instrument 2 is connected with described surge tank air outlet 6 by the second magnetic valve 13.
Operation instruction: after nitrogen gas purity analyser detects that Nitrogen plant nitrogen outlet purity is defective, namely Controlling System closes adsorption tower nitrogen outlet valve, now Nitrogen plant outside supplying nitrogen, the defective nitrogen in surge tank at the adsorption tower work initial stage in the second check valve 10, second stopping valve 8 rapid return adsorption tower.The oxygen impurities that exceeds standard in defective nitrogen is by the molecular sieve adsorption on adsorption tower upper strata, due to not outside air feed, Nitrogen plant is in low load condition, sheaf space very high purity on adsorption tower, 99.995% is reached through experiment measuring, molecular sieve adsorption is very capable, therefore the defective nitrogen turned back in adsorber is by Fast Purification, comes back in nitrogen buffer tank neutralization buffer tank remain the total purity of defective nitrogen mixing raising nitrogen through the first stopping valve 7, first check valve 9.Generally can recover air feed (1 120 seconds cycle) through 2 ~ 3 cycles, stop waste because nitrogen emptying causes and original system recovers the long shortcoming of service life, save resource and improve efficiency.

Claims (2)

1. heavy duty detergent system with molecular sieve for preparing nitrogen machine, comprise compressed air inlet (1), nitrogen outlet, adsorption tower group, valve system, tubing system, purity check instrument (2), surge tank, described adsorption tower group comprises the first adsorption tower (3), second adsorption tower (4), described surge tank comprises surge tank inlet mouth (5), surge tank air outlet (6), it is characterized in that, described saving type system with molecular sieve for preparing nitrogen machine also comprises the first stopping valve (7), second stopping valve (8), first check valve (9), second check valve (10), described first stopping valve (7) is connected with described first check valve (9) and is formed gas stream inlet pipe road, described second stopping valve (8) is connected with described second check valve (10) and is formed gas outflow lines, described gas stream inlet pipe road is in parallel with described gas outflow lines, described first check valve (9) is contrary with the direction of described second check valve (10).
2. heavy duty detergent system with molecular sieve for preparing nitrogen machine as claimed in claim 1, it is characterized in that, described purity check instrument (2) is connected with adsorption tower group gas outlet duct (12) by the first magnetic valve (11); Described purity check instrument (2) is connected with described surge tank air outlet (6) by the second magnetic valve (13).
CN201410496763.XA 2014-09-25 2014-09-25 High-efficiency molecular sieve nitrogen making machine Pending CN104291280A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
CN201410496763.XA CN104291280A (en) 2014-09-25 2014-09-25 High-efficiency molecular sieve nitrogen making machine

Publications (1)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105152145A (en) * 2015-08-12 2015-12-16 杭州天利空分设备制造有限公司 Nitrogen production device provided with oxygen recovery system
CN105858610A (en) * 2016-03-25 2016-08-17 江苏嘉宇特种装备股份有限公司 Highly-efficient molecular sieve oxygen generator
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
CN106145067A (en) * 2016-08-31 2016-11-23 江苏嘉宇特种装备股份有限公司 Plasma cutting special nitrogen making machine
CN106395767A (en) * 2016-08-31 2017-02-15 江苏嘉宇特种装备股份有限公司 Special nitrogen producing machine for plasma cutting
CN109529533A (en) * 2018-11-06 2019-03-29 威海威高海盛医用设备有限公司 A kind of optimization and control method of dual reflux pressure-swing absorption apparatus
CN111377417A (en) * 2020-04-09 2020-07-07 苏州纳特云端净化设备有限公司 Nitrogen production intelligent start-stop instant gas supply process
CN112158813A (en) * 2020-09-18 2021-01-01 杭州富阳万博空分设备有限公司 Household rapid nitrogen making machine and use method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011020906A (en) * 2009-07-17 2011-02-03 Air Water Inc Method for producing high purity nitrogen gas
CN202729800U (en) * 2012-06-29 2013-02-13 杭州博大净化设备有限公司 Nitrogen generator capable of reproducibly utilizing unqualified nitrogen
CN202849067U (en) * 2012-09-07 2013-04-03 浙江拓航机电设备有限公司 Reverse pressing apparatus for pressure swing adsorption nitrogen production equipment
CN203820458U (en) * 2014-04-30 2014-09-10 赣州川汇气体设备制造有限公司 PSA (Pressure Swing Adsorption) nitrogen production output device
CN204079490U (en) * 2014-09-25 2015-01-07 江苏嘉宇流体装备有限公司 Heavy duty detergent system with molecular sieve for preparing nitrogen machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011020906A (en) * 2009-07-17 2011-02-03 Air Water Inc Method for producing high purity nitrogen gas
CN202729800U (en) * 2012-06-29 2013-02-13 杭州博大净化设备有限公司 Nitrogen generator capable of reproducibly utilizing unqualified nitrogen
CN202849067U (en) * 2012-09-07 2013-04-03 浙江拓航机电设备有限公司 Reverse pressing apparatus for pressure swing adsorption nitrogen production equipment
CN203820458U (en) * 2014-04-30 2014-09-10 赣州川汇气体设备制造有限公司 PSA (Pressure Swing Adsorption) nitrogen production output device
CN204079490U (en) * 2014-09-25 2015-01-07 江苏嘉宇流体装备有限公司 Heavy duty detergent system with molecular sieve for preparing nitrogen machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105152145A (en) * 2015-08-12 2015-12-16 杭州天利空分设备制造有限公司 Nitrogen production device provided with oxygen recovery system
CN105858610A (en) * 2016-03-25 2016-08-17 江苏嘉宇特种装备股份有限公司 Highly-efficient molecular sieve oxygen generator
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
CN106145067A (en) * 2016-08-31 2016-11-23 江苏嘉宇特种装备股份有限公司 Plasma cutting special nitrogen making machine
CN106395767A (en) * 2016-08-31 2017-02-15 江苏嘉宇特种装备股份有限公司 Special nitrogen producing machine for plasma cutting
CN109529533A (en) * 2018-11-06 2019-03-29 威海威高海盛医用设备有限公司 A kind of optimization and control method of dual reflux pressure-swing absorption apparatus
CN111377417A (en) * 2020-04-09 2020-07-07 苏州纳特云端净化设备有限公司 Nitrogen production intelligent start-stop instant gas supply process
CN112158813A (en) * 2020-09-18 2021-01-01 杭州富阳万博空分设备有限公司 Household rapid nitrogen making machine and use method thereof

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