CN201637226U - Device for recycling high-purity tail nitrogen gas through air separation - Google Patents
Device for recycling high-purity tail nitrogen gas through air separation Download PDFInfo
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- CN201637226U CN201637226U CN2010200103541U CN201020010354U CN201637226U CN 201637226 U CN201637226 U CN 201637226U CN 2010200103541 U CN2010200103541 U CN 2010200103541U CN 201020010354 U CN201020010354 U CN 201020010354U CN 201637226 U CN201637226 U CN 201637226U
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Abstract
The utility model provides a device for recycling high-purity tail nitrogen gas through air separation. The device is characterized by the inclusion of a compressor unit, a first automatic atmospheric valve, a second automatic atmospheric valve, a first automatic cut-off valve, a second automatic cut-off valve, a pressure transmitter, a purity analyzing device, a DCS controller and a pipeline connected therewith; the device has the advantages of simple structure, practicability, easy operation and control, low cost, simple control, safety and reliability, and solves the problems of grave loss of equipment, low recycle efficiency and bad stability during recycling of high-purity tail nitrogen gas through air separation.
Description
Technical field: the utility model relates to the unnecessary high-purity gas recycling in empty branch field, relates in particular to a kind of sky with automatic control function and divides tail high pure nitrogen recycle device.
Background technology: divide the field at sky at present, mainly utilize oxygen to be the master, have a large amount of unnecessary high pure nitrogen dischargings empty the branch, and this strand high pure nitrogen can reach the requirement of GB8980 fully, and exclusion, free from admixture are a kind of good industrial gasses.As long as air separation unit operation, this strand high pure nitrogen (also can be dirty nitrogen) will be continually, stable discharge.Can cause the great energy (resource) waste if be not used; And if directly utilize compressor to recycle, then because empty gas pressure and the not enough causes for stable of purity of dividing discharging, make that not only the stability that reclaims is not enough, but also compressor often need be stopped, will certainly causing the wearing and tearing of plant equipment, the waste of resource and the reduction of organic efficiency like this; And how efficient stable and recovery that can low energy consumption then become the problem that needs solve.
The content of utility model:
The technical problem that solves:
The utility model provides a kind of empty tail high pure nitrogen recycle device that divides, and its objective is that the equipment loss when the empty in the past branch tail of solution high pure nitrogen reclaims is serious, organic efficiency is low and the problem of poor stability.
Technical scheme: utility model own is achieved through the following technical solutions:
The empty tail high pure nitrogen recycle device that divides, it is characterized in that: this device comprises compressor bank, the first automatic atmospheric valve, the second automatic atmospheric valve, first automatic stop valve, second automatic stop valve, pressure transmitter, purity analysis device, DCS controller and the pipeline that connects in them;
The entrance pipe of described compressor bank is provided with the first automatic atmospheric valve, on the pipeline between the first automatic atmospheric valve and the compressor bank first automatic stop valve is set; The direction that flows out according to gas on the export pipeline of described compressor bank sets gradually purity analysis device, the second automatic atmospheric valve, second automatic stop valve and pressure transmitter;
The described first automatic atmospheric valve, the second automatic atmospheric valve, first automatic stop valve, second automatic stop valve, pressure transmitter and purity analysis device all are connected to the DCS controller by data wire.
Also include surge tank in this device, the entrance pipe that surge tank is arranged on compressor bank foremost.
Advantageous effect:
The utility model provides a kind of empty tail high pure nitrogen recycle device that divides, this device comprises compressor bank, the first automatic atmospheric valve, the second automatic atmospheric valve, first automatic stop valve, second automatic stop valve, pressure transmitter, purity analysis device, DCS controller and the pipeline that connects in them;
The entrance pipe of described compressor bank is provided with the first automatic atmospheric valve, on the pipeline between the first automatic atmospheric valve and the compressor bank first automatic stop valve is set; The direction that flows out according to gas on the export pipeline of described compressor bank sets gradually purity analysis device, the second automatic atmospheric valve, second automatic stop valve and pressure transmitter;
The described first automatic atmospheric valve, the second automatic atmospheric valve, first automatic stop valve, second automatic stop valve, pressure transmitter and purity analysis device all are connected to the DCS controller by data wire.
This utility model is utilized oilless (oil free) compressor group (piston type, screw or molding machine) and four automatic valves, forms an air supply system.Oilless (oil free) compressor group outlet pressure/flow can be set as required.Two automatic valves that enter the mouth export two automatic valves, play cut-out, emptying effect respectively.Simultaneously purity/moisture detector is set in import, when purity/Moisture high UCL, chain with the compressor outlet stop valve, stop valve cuts out, for guaranteeing air separation plant stable operation, be unlikely to suppress tower simultaneously, after compressor stops, the air separation column outlet pressure raises, and atmospheric valve is opened (opening pressure is relevant with setting value) automatically, thereby guarantees air separation unit stable operation.
Autocontrol valve selects operated pneumatic valve for use, is swift in motion, sensitive reliable.The situation of recovery nitrogen, available nitrogen are made valve and are started source of the gas, and that reclaims oxygen should be equipped with valve startup source of the gas in addition.Compressor divides the user to use the purity/quality requirement of nitrogen and decides: common exhaust end base of oil injection threaded bolt formula compressor outlet can be with the 2-5ppm oil content, the body cleanliness factor height of no beam hanger compressor output.Produce high-purity/during ultra-pure gas, available membrane formula compressor the best.
Whole system can be incorporated in the empty DCS of the branch control system, reaches intelligent Automatic Control.
The utility model is simple in structure, practical, easy to operate, easy to control and cost is low, control is simple, safe and reliable.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
The specific embodiment: the utility model is described further below in conjunction with accompanying drawing
As shown in Figure 1, the utility model provides a kind of empty tail high pure nitrogen recycle device that divides, this device comprises compressor bank 6, first automatic atmospheric valve 2, second automatic atmospheric valve 8, the first automatic stop valves 3, second automatic stop valve 9, pressure transmitter 4, purity analysis device 5, DCS controller and the pipeline that connects in them;
The entrance pipe of described compressor bank 6 is provided with on the pipeline between first automatic atmospheric valve 2, the first automatic atmospheric valves 2 and the compressor bank 6 first automatic stop valve 3 is set; The direction that flows out according to gas on the export pipeline of described compressor bank 6 sets gradually purity analysis device 5, the second automatic atmospheric valve 8, second automatic stop valve 9 and pressure transmitter 4; The export pipeline of compressor bank 6 is connected to user's output pipe network.
Described first automatic atmospheric valve 2, second automatic atmospheric valve 8, the first automatic stop valves 3, second automatic stop valve 9, pressure transmitter 4 and purity analysis device 5 all are connected to the DCS controller by data wire.
Also include surge tank in this device, the entrance pipe that surge tank is arranged on compressor bank 6 foremost, that is to say that on the entrance pipe of compressor bank 6, the direction that flows into according to gas is provided with surge tank, the first automatic atmospheric valve 2 and first automatic stop valve 3 with this; Just nearer apart from the gas vent of air separation unit king-tower 10 when in use position.
The use of this utility model is as follows:
In the process of using, the entrance pipe of compressor bank 6 is connected to the nitrogen outlet of air separation unit king-tower 10; Compressor bank 6 plays gas lift pressure that king-tower 10 is discharged and the effect that keeps certain flow, can select piston type when not too high (require), oil free screw formula or membrane compressor group for use;
When compressor bank stop suddenly (or chain parking), this moment can be to the impact of air separation unit king-tower 10 generation pressure waves, if king-tower 10 pressure rise suddenly, can exert an influence to quality such as purity, therefore, the first automatic atmospheric valve 2 control emptying amounts are when pressure surpasses setting value, automatically open emptying, it is constant that the pressure of compressor bank 6 entrance pipes keeps.
When purity analysis instrument 5 detects the underproof gas of purity, the DCS controller can cut out first automatic stop valve 3 and second automatic stop valve 9 automatically, stop compressor bank 6 simultaneously, when pressure transmitter 4 detects that user's output pipe network pressure raises or consumption when reducing,, also can impact king-tower 10 if stop compressor suddenly, therefore, open simultaneously with the second automatic atmospheric valve 8, the unnecessary gas of discharge unit, it is stable to keep ductwork pressure.
Surge tank is a selectable unit (SU), if system pressure stability requirement height, surge tank is only necessary.
The startup of first automatic atmospheric valve 2, second automatic atmospheric valve 8, the first automatic stop valves 3, second automatic stop valve 9, pressure transmitter 4, purity analysis device 5 and compressor bank 6/stop is all chain, and is controlled by space division system DCS controller.
Compressor bank outlet pressure difference is selected suitable compressor bank 6 according to arts demand.
The utility model is simple in structure, practical, easy to operate, easy to control and cost is low, control is simple, safe and reliable.
Claims (2)
1. the empty tail high pure nitrogen recycle device that divides, it is characterized in that: this device comprises compressor bank (6), the first automatic atmospheric valve (2), the second automatic atmospheric valve (8), first automatic stop valve (3), second automatic stop valve (9), pressure transmitter (4), purity analysis device (5), DCS controller and the pipeline that is connected with them;
The entrance pipe of described compressor bank (6) is provided with the first automatic atmospheric valve (2), on the pipeline between the first automatic atmospheric valve (2) and the compressor bank (6) first automatic stop valve (3) is set; The direction that flows out according to gas on the export pipeline of described compressor bank (6) sets gradually purity analysis device (5), the second automatic atmospheric valve (8), second automatic stop valve (9) and pressure transmitter (4);
The described first automatic atmospheric valve (2), the second automatic atmospheric valve (8), first automatic stop valve (3), second automatic stop valve (9), pressure transmitter (4) and purity analysis device (5) all are connected to the DCS controller by data wire.
2. the empty tail high pure nitrogen recycle device that divides according to claim 1 is characterized in that: also include surge tank in this device, the entrance pipe that surge tank is arranged on compressor bank (6) foremost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200103541U CN201637226U (en) | 2010-01-20 | 2010-01-20 | Device for recycling high-purity tail nitrogen gas through air separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200103541U CN201637226U (en) | 2010-01-20 | 2010-01-20 | Device for recycling high-purity tail nitrogen gas through air separation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201637226U true CN201637226U (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200103541U Expired - Fee Related CN201637226U (en) | 2010-01-20 | 2010-01-20 | Device for recycling high-purity tail nitrogen gas through air separation |
Country Status (1)
| Country | Link |
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| CN (1) | CN201637226U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491288A (en) * | 2011-11-29 | 2012-06-13 | 黑龙江省科学院石油化学研究院 | Nitrogen recovery and reutilization system in arylboronic acid synthesis |
| CN107664264A (en) * | 2017-10-31 | 2018-02-06 | 陕西煤化能源有限公司 | A kind of high pressure oxygen network security interlock |
| CN111486663A (en) * | 2020-04-08 | 2020-08-04 | 广州广钢气体能源股份有限公司 | Nitrogen making machine suitable for electronic gas factory |
-
2010
- 2010-01-20 CN CN2010200103541U patent/CN201637226U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491288A (en) * | 2011-11-29 | 2012-06-13 | 黑龙江省科学院石油化学研究院 | Nitrogen recovery and reutilization system in arylboronic acid synthesis |
| CN102491288B (en) * | 2011-11-29 | 2013-05-08 | 黑龙江省科学院石油化学研究院 | Nitrogen recovery and reutilization system in arylboronic acid synthesis |
| CN107664264A (en) * | 2017-10-31 | 2018-02-06 | 陕西煤化能源有限公司 | A kind of high pressure oxygen network security interlock |
| CN111486663A (en) * | 2020-04-08 | 2020-08-04 | 广州广钢气体能源股份有限公司 | Nitrogen making machine suitable for electronic gas factory |
| CN111486663B (en) * | 2020-04-08 | 2021-01-22 | 广州广钢气体能源股份有限公司 | Nitrogen making machine suitable for electronic gas factory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20130120 |