CN204063786U - A kind of syndeton that can make air separation unit underrun - Google Patents
A kind of syndeton that can make air separation unit underrun Download PDFInfo
- Publication number
- CN204063786U CN204063786U CN201420517222.6U CN201420517222U CN204063786U CN 204063786 U CN204063786 U CN 204063786U CN 201420517222 U CN201420517222 U CN 201420517222U CN 204063786 U CN204063786 U CN 204063786U
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- China
- Prior art keywords
- air compressor
- separation unit
- air separation
- compressor machine
- small
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
- F25J3/04812—Different modes, i.e. "runs" of operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
- F25J3/04951—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network
- F25J3/04957—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network and inter-connecting equipments upstream of the fractionation unit (s), i.e. at the "front-end"
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/24—Multiple compressors or compressor stages in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/40—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2245/00—Processes or apparatus involving steps for recycling of process streams
- F25J2245/40—Processes or apparatus involving steps for recycling of process streams the recycled stream being air
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
A syndeton for air separation unit underrun can be made, belong to air separation unit equipment technical field, for realizing air separation unit trouble-free operation at low load.Its technical scheme is: increase small air compressor and air compressor machine communicating valve, the large air compressor machine of large air separation unit and small air compressor are in parallel, large air compressor machine and small air compressor can be switched by air compressor machine communicating valve in running, under the prerequisite of the little air separation unit of not thermal starting, large air separation unit operating load is down to 65%-70%, break through the design limit of Air Separator design minimum load 75%, and keep air separation unit stable operation, reach the coherent output of the various demand of oxygen product, effective control energy waste, avoid the heavy economic losses brought because switching air separation unit simultaneously.The utility model structure is simple, easy to use, and small air compressor has more used the small air compressor of little air separation unit, takes full advantage of existing equipment, reduces cost, have significant economic benefit.
Description
Technical field
The utility model relates to the syndeton that a kind of multiple air compressors is in parallel and switch mutually to air separation unit transferring raw material air, belongs to air separation unit equipment technical field.
Background technology
In Production for oxygen, need to use supporting air separation unit and air compressor machine.Under normal conditions, configuration two is needed to overlap the above air separation unit differed in size, to adapt to not be both need of production.But find aborning, when wherein a set of larger air separation unit runs, and less air separation unit Warm status for subsequent use when, if user because of maintenance or other reasons cause oxygen amount of purchase short-term to decline to a great extent, following two kinds of great energy wastes and economic loss will be caused: one is the restriction by the supporting large air compressor machine minimum load of large air separation unit, oxygen output cannot be down to and be balanced each other with amount of purchase by air separation unit, consequently large air compressor machine power consumption remains high on the one hand, also can produce oxygen simultaneously and diffuse in a large number, cause great waste; Two is as started less air separation unit, and thermal starting expense is at every turn up to more than 20 ten thousand yuan, and after user overhauls complete reproducing in a short time, little air separation unit again must be out of service, thermal starting expense cannot be digested in a short time, certainly will cause larger economic loss.Therefore, in oxygen preparation, solution two is needed to affect the problem of productivity effect at present:
1, how when user's oxygen amount of purchase declines to a great extent, oxygen product output is reduced to and balances with amount of purchase, but avoid because short term thermal starts the economic loss that little air separation unit brings.
2, under the prerequisite ensureing air compressor machine safe operation, the lower air that processes raw material how is obtained, to guarantee that air separation unit is produced and the product volume purchased oxygen and balance each other.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of syndeton that can make air separation unit underrun, this syndeton can break through Air Separator design minimum operation load lower limit, oxygen product output is reduced to and balances with amount of purchase, but avoid because short term thermal starts the economic loss that little air separation unit brings.
The technical scheme solved the problems of the technologies described above is:
A kind of syndeton that can make air separation unit underrun, it comprises large air separation unit, large air compressor machine, large air compressor machine outlet valve, large air compressor machine outlet non-return valve, large air compressor machine is by large air compressor machine outlet non-return valve, large air compressor machine outlet valve is connected with large air separation unit, its improvements are, it also increases a small air compressor, small air compressor outlet non-return valve, small air compressor outlet valve and air compressor machine communicating valve, small air compressor is by small air compressor outlet non-return valve, small air compressor outlet valve is connected with one end of air compressor machine communicating valve, the other end of air compressor machine communicating valve is connected on the connecting line between large air compressor machine outlet valve and large air separation unit.
The above-mentioned syndeton that can make air separation unit underrun, described small air compressor is small air compressor supporting in little air separation unit, small air compressor is connected with little air separation unit by small air compressor outlet non-return valve, small air compressor outlet valve, and the two ends of air compressor machine communicating valve are connected with the export pipeline of large air compressor machine outlet valve with the export pipeline of small air compressor outlet valve respectively by pipeline.
The beneficial effects of the utility model are:
Large air compressor machine and the small air compressor of large air separation unit of the present utility model are in parallel, large air compressor machine and small air compressor can be switched by air compressor machine communicating valve in running, make when user causes oxygen amount of purchase short-term to decline to a great extent because of maintenance or other reasons, under the prerequisite of the little air separation unit of not thermal starting, large air separation unit operating load is down to 65%-70%, break through the design limit of Air Separator design minimum load 75%, and keep air separation unit stable operation, reach the coherent output of the various demand of oxygen product, effective control energy waste, avoid the heavy economic losses brought because switching air separation unit simultaneously, improve the economic benefit of enterprise.The utility model structure is simple, easy to use, and small air compressor has more used the small air compressor of little air separation unit, takes full advantage of existing equipment, has saved resource, reduced cost, have significant economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, mark is as follows: small air compressor 1, little air separation unit 2, large air compressor machine 3, large air separation unit 4, small air compressor outlet valve 5, large air compressor machine outlet valve 6, small air compressor outlet non-return valve 7, large air compressor machine outlet non-return valve 8, air compressor machine coupling cock 9.
Detailed description of the invention
Technical problem to be solved in the utility model is:
A, how when user's oxygen amount of purchase declines to a great extent, oxygen product output is reduced to and balances with amount of purchase, but avoid because short term thermal starts the economic loss that little air separation unit brings.
B, under the prerequisite ensureing air compressor machine safe operation, how to obtain the lower air that processes raw material, to guarantee that air separation unit is produced and the product volume purchased oxygen and balance each other.
C, obtain coupling the air that processes raw material after, how to carry out the technique adjustment of appropriate air separation unit, to break through Air Separator design minimum operation load lower limit, reach oxygen amount of purchase balance requirement.This work has high technological challenge and operation continuity, requires that cammander works in concert with each post operation personnel, tacit agreement coordinates, action emergency is appropriate, precisely errorless.
In order to solve the problems of the technologies described above, the present invention has carried out following improvement to prior art:
Show in figure, the utility model comprises large air separation unit 4, large air compressor machine 3, large air compressor machine outlet valve 6, large air compressor machine outlet non-return valve 8, and large air compressor machine 3 is connected 4 by large air compressor machine outlet non-return valve 8, large air compressor machine outlet valve 6 with large air separation unit.
Show in figure, the utility model adds a small air compressor 1, small air compressor outlet non-return valve 7, small air compressor outlet valve 5 and air compressor machine communicating valve 9, small air compressor 1 is connected with one end of air compressor machine communicating valve 9 by small air compressor outlet non-return valve 7, small air compressor outlet valve 5, and the other end of air compressor machine communicating valve 9 is connected on the connecting line between large air compressor machine outlet valve 6 and large air separation unit 4.
Show in figure, in order to economize on resources, make full use of existing equipment, the small air compressor 1 in parallel with large air compressor machine 3 is small air compressor 1 supporting in little air separation unit 2, small air compressor 1 is connected with little air separation unit 2 by small air compressor outlet non-return valve 7, small air compressor outlet valve 5, and the two ends of air compressor machine communicating valve 9 are connected with the export pipeline of large air compressor machine outlet valve 6 with the export pipeline of small air compressor outlet valve 5 respectively by pipeline.
The course of work of the present utility model is as follows:
After small air compressor 1 is started, outlet pressure is carried and being balanced to large air compressor machine 3 outlet pressure, open small air compressor outlet valve 5 and air compressor machine communicating valve 9, gradually small air compressor 1 operating load is improved, synchronous by large air compressor machine 3 load reduction, until carry small air compressor 1 load to maximum, close large air compressor machine outlet valve 6, stop large air compressor machine 3 to run, namely large air separation unit 4 obtains match machined raw air.
Obtain the air that processes raw material of coupling at large air separation unit 4 after, significantly technique adjustment need be carried out to large air separation unit 4, to adapt to process raw material, air significantly reduces to the impact of large air separation unit 4 operating mode, keep large air separation unit 4 load to have large to little stable transition, concrete settling mode is as follows:
One, reduce booster expansion machine load, open supercharger return valve, improve lower tower admission pressure;
Two, crude argon column load is reduced, for king-tower provides sufficient source of the gas;
Three, lower tower liquid nitrogen reflux valve is suitably turned down, to ensure the normal operating pressure of king-tower.
After adopting above technical pattern, the utility model can reach following technique effect:
A, according to material balance principle, the air that processes raw material can be down to enough low by small air compressor 1, can ensure to obtain the product oxygen balanced each other with amount of purchase, can continue the operation keeping large air separation unit 4, and avoid the little air separation unit 2 of thermal starting.
B, when large air compressor machine 3 operating load supporting with large air separation unit 4 drops to surge area; surge (vibration under a kind of damage occurred when flow reduces to a certain degree) interlock protection will be there is and shut down in compressor; for anti-generation of planting here situation; small air compressor 1 and large air compressor machine 3 can be switched; adopt the pattern of small air compressor 1 supporting large air separation unit 4, reach the object of not only saving electricity and exporting but also obtaining the enough low air that processes raw material.
Claims (2)
1. one kind can make the syndeton of air separation unit underrun, it comprises large air separation unit (4), large air compressor machine (3), large air compressor machine outlet valve (6), large air compressor machine outlet non-return valve (8), large air compressor machine (3) is by large air compressor machine outlet non-return valve (8), large air compressor machine outlet valve (6) is connected with large air separation unit (4), it is characterized in that: it also increases a small air compressor (1), small air compressor outlet non-return valve (7), small air compressor outlet valve (5) and air compressor machine communicating valve (9), small air compressor (1) is by small air compressor outlet non-return valve (7), small air compressor outlet valve (5) is connected with one end of air compressor machine communicating valve (9), the other end of air compressor machine communicating valve (9) is connected on the connecting line between large air compressor machine outlet valve (6) and large air separation unit (4).
2. the syndeton that can make air separation unit underrun according to claim 1, it is characterized in that: described small air compressor (1) is small air compressor (1) supporting in little air separation unit (2), small air compressor (1) is connected with little air separation unit (2) by small air compressor outlet non-return valve (7), small air compressor outlet valve (5), and the two ends of air compressor machine communicating valve (9) are connected with the export pipeline of large air compressor machine outlet valve (6) with the export pipeline of small air compressor outlet valve (5) respectively by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517222.6U CN204063786U (en) | 2014-09-10 | 2014-09-10 | A kind of syndeton that can make air separation unit underrun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517222.6U CN204063786U (en) | 2014-09-10 | 2014-09-10 | A kind of syndeton that can make air separation unit underrun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204063786U true CN204063786U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420517222.6U Active CN204063786U (en) | 2014-09-10 | 2014-09-10 | A kind of syndeton that can make air separation unit underrun |
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| CN (1) | CN204063786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090611A (en) * | 2016-06-20 | 2016-11-09 | 浙江智海化工设备工程有限公司 | The energy conservation of compressor feeder of a kind of air separation unit and air supply method |
-
2014
- 2014-09-10 CN CN201420517222.6U patent/CN204063786U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090611A (en) * | 2016-06-20 | 2016-11-09 | 浙江智海化工设备工程有限公司 | The energy conservation of compressor feeder of a kind of air separation unit and air supply method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |