CN104632313A - Device and method for preparing compressed air by means of ORC - Google Patents
Device and method for preparing compressed air by means of ORC Download PDFInfo
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- CN104632313A CN104632313A CN201510040875.9A CN201510040875A CN104632313A CN 104632313 A CN104632313 A CN 104632313A CN 201510040875 A CN201510040875 A CN 201510040875A CN 104632313 A CN104632313 A CN 104632313A
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Abstract
The invention relates to the technique for recovering and utilizing medium-temperature and low-temperature waste heat and provides a device and method for preparing compressed air by means of ORC. The device for preparing compressed air by means of ORC comprises an evaporator, a turbine coaxial integrated machine, a condenser and a working medium pump, wherein the turbine coaxial integrated machine is formed by coaxially and straight connecting a turbine expander with a turbine compressor, the turbine expansion machine is used for expanding so as to act, the turbine compressor is used for preparing compressed air, the turbine expander is provided with a working medium inlet and a working medium outlet, the turbine compressor is provided with an air inlet and a compressed air outlet, all the devices are connected through pipelines, the outlet end of the working medium pump is connected with a working medium inlet of the evaporator, a working medium outlet of the evaporator is connected with the working medium inlet of the turbine expander, the working medium outlet of the turbine expander is connected to the inlet end of the working medium pump through the condenser, and the evaporator is provided with a heat source inlet end and a heat source outlet end. By the adoption of the device and method, medium-temperature and low-temperature waste heat is recovered and utilized by means of ORC, compressed air is prepared directly, and the waste heat energy recovering efficiency is improved. A unit is smaller and more exquisite, manufacturing cost is lower, and operation is safer.
Description
Technical field
The present invention relates to Low and mid temperature heat recovery and utilize technical field, especially relate to a kind of ORC and produce compressed-air actuated device and method.
Background technique
Pressurized air is one of universal energy being only second to electric power, is the most widely used the fourth-largest energy of process industry, account for 10 ~ 15% of the total energy consumption of the Chinese whole society.At present, compressed-air actuated mode of generally producing is that motor run compressor or steam turbine drag compressor.
In all conglomeraties such as iron and steel, non-ferrous metal, petrochemical industry, building materials, light industry, there is a large amount of low grade residual heat in manufacturing enterprise, comprises flue gas, steam and hot water etc., these heat grades are low, quantity is large, point spreading, substantially can not for producing recycling.At present, Low and mid temperature heat recovery technical elements, ORC generating is because of the Security of its good mobility, height and very popular to advantages such as the requirement of maintaining are lower, but electricity is because poor quality (belongs to rubbish electricity, containing harmonic wave, can affect industrial stable), the process industry of high reliability request is unwilling to use these rubbish electricity.If produce pressurized air, by being directly incorporated into compressed air line after pressure maintaining valve/reduction valve, just fairly simple.
At present, do not find both at home and abroad to utilize ORC to produce compressed-air actuated application, the present invention brings brand-new pressurized air ideas of energy-saving, utilizes free industrial middle-low temperature heat to produce pressurized air.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes deficiency of the prior art, provides a kind of ORC to produce compressed-air actuated device and method.The present invention is intended to improve the reality that energy efficiency is low, system is unstable that traditional ORC generates electricity, and for the large present situation of pressurized air demand in current industrial production process, the ingenious ORC of utilization directly produces pressurized air.
For technical solution problem, the technical solution adopted in the present invention is:
There is provided a kind of ORC to produce compressed-air actuated device, comprise vaporizer; This device also comprises: turbine coaxial all-in-one machine, condenser and working medium pump, realizes connecting between each equipment by pipeline; Described turbine coaxial all-in-one machine is by turbo-expander and the coaxial direct connection of turbocompressor, and turbo-expander is used for expansion work, and turbocompressor is used for producing pressurized air; Wherein, turbo-expander is provided with working medium entrance and sender property outlet, and turbocompressor is provided with air inlet and compressed air outlet;
Realize connecting by pipeline between each equipment: the outlet end of working medium pump connects with the working medium entrance of vaporizer, and the sender property outlet of vaporizer connects with the working medium entrance of turbo-expander, and the sender property outlet of turbo-expander is connected to the entry end of working medium pump through condenser; Vaporizer is provided with thermal source inlet end and thermal source outlet end.
In the present invention, described condenser is air-cooled condenser or water-cooled condenser.
Present invention also offers and utilize aforementioned means to realize ORC to produce compressed-air actuated method, comprising:
The liquid organic working medium of 1 ~ 2.5bar sends into vaporizer after being pressurizeed by working medium pump, absorbs the energy from the middle-low temperature heat of 80 ~ 300 DEG C, and organic working medium becomes 5 ~ 10bar, the steam of 60 ~ 80 DEG C mutually, then is imported into turbo-expander; While turbo-expander acting, drive and with the turbocompressor of its direct connection, normal air is compressed, realize output squeezing air; After turbo-expander acting, organic working medium is discharged with the vaporous form of 1.5 ~ 3bar and is sent into condenser, then is condensed into liquid state after low-temperature receiver heat release, returns working medium pump entrance, realizes reciprocation cycle with this.
In the present invention, described middle-low temperature heat refers to: flue gas, steam or hot water.
In the present invention, described low-temperature receiver refers to air or water: if adopt air-cooled condenser, low-temperature receiver is air; If employing water-cooled condenser, low-temperature receiver is water.
In the present invention, described organic working medium is freon.Also non-Freon working medium can be applied, such as silicone oil, carbon dioxide etc. in some special industry occasions.
Compared with prior art, the invention has the beneficial effects as follows:
1.ORC realizes Low and mid temperature heat recovery and utilizes, and directly produces pressurized air, improves the reuse efficiency of the waste heat energy.
2. unit is smaller and more exquisite, manufacture cost is lower, it is safer to run.If 10 unit parallel connection access compressed air pipe networks, electricity originally drags compressor (2 ~ 3) and can stop, because multiple stage in parallel, runs more reliable and secure.
Accompanying drawing explanation
Fig. 1 is that ORC of the present invention produces compressed-air actuated device schematic diagram;
Fig. 2 is turbine coaxial all-in-one machine schematic diagram;
Be labeled as in figure: vaporizer 1, thermal source inlet end 2, thermal source outlet end 3, (vaporizer) sender property outlet 4, (vaporizer) working medium entrance 5, turbine coaxial all-in-one machine 6, (turbo-expander) working medium entrance 7, (turbo-expander) sender property outlet 8, pressurized air 9, condenser 10, (condenser) working medium entrance 11, (condenser) sender property outlet 12, working medium pump 13, turbocompressor 14, turbo-expander 15, normal air 16.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
ORC in the present invention produces compressed-air actuated device, comprises vaporizer 1, turbine coaxial all-in-one machine 6, condenser 10 and working medium pump 13; It is the condenser of air cooling or water-cooled that condenser 10 can adopt.
Described turbine coaxial all-in-one machine 6 is by turbo-expander 15 and the coaxial direct connection of turbocompressor 14, and turbo-expander 15 is for expansion work, and turbocompressor 14 is for producing pressurized air; Wherein, turbo-expander 15 is provided with working medium entrance 7 and sender property outlet 8, and turbocompressor 14 is provided with air inlet and compressed air outlet.
When turbine coaxial all-in-one machine 6 works, turbo-expander 15 is connected with turbocompressor 14 coaxial constant-speed, avoids different driven off by shaft mechanical efficiency loss, improves and produce compressed-air actuated whole efficiency.
Realize connecting by pipeline between each equipment: the outlet end of working medium pump 13 connects with the working medium entrance 5 of vaporizer 1, and the sender property outlet 4 of vaporizer 1 connects with the working medium entrance 7 of turbo-expander 15; The sender property outlet 8 of turbo-expander 15 is connected to the entry end of working medium pump 13 through condenser 10; Vaporizer 1 is provided with thermal source inlet end 2 and thermal source outlet end 3.
Device in the present invention establishes control system, not only realize the basic controlling of the electric and instrument relevant to device, and by arranging sensor on pipeline, by the aperture of regulating and controlling valve, reaching and improving the optimum condition effect of turbo-expander 15 and the reliability of system.Turbine coaxial all-in-one machine 6 establishes lubricating oil system.
In the present invention, utilize aforementioned means to realize ORC and produce compressed-air actuated method, comprising:
The liquid organic working medium of 1 ~ 2.5bar sends into vaporizer 1 after being pressurizeed by working medium pump, and absorb the energy from the middle-low temperature heat of 80 ~ 300 DEG C, organic working medium becomes steam mutually, then is imported into turbo-expander 15; Turbo-expander 15 drives and compresses with turbocompressor 14 pairs of normal air of its direct connection, realize output squeezing air while doing work; After turbo-expander 15 does work, organic working medium is discharged with the vaporous form of 1.5 ~ 3bar and is sent into condenser 10, then is condensed into liquid state after low-temperature receiver heat release, returns working medium pump 13 entrance, realizes reciprocation cycle with this.
In the present invention, middle-low temperature heat refers to flue gas, steam or hot water; Low-temperature receiver refers to air or water: if adopt air-cooled condenser, low-temperature receiver is air; If employing water-cooled condenser, low-temperature receiver is water; Organic working medium is freon, also can apply non-Freon working medium, such as silicone oil, carbon dioxide etc. in some special industry occasions.
Claims (6)
1. ORC produces a compressed-air actuated device, comprises vaporizer; It is characterized in that, this device also comprises: turbine coaxial all-in-one machine, condenser and working medium pump;
Described turbine coaxial all-in-one machine is by turbo-expander and the coaxial direct connection of turbocompressor, and turbo-expander is used for expansion work, and turbocompressor is used for producing pressurized air; Wherein, turbo-expander is provided with working medium entrance and sender property outlet, and turbocompressor is provided with air inlet and compressed air outlet;
Realize connecting by pipeline between each equipment: the outlet end of working medium pump connects with the working medium entrance of vaporizer, and the sender property outlet of vaporizer connects with the working medium entrance of turbo-expander, and the sender property outlet of turbo-expander is connected to the entry end of working medium pump through condenser; Vaporizer is provided with thermal source inlet end and thermal source outlet end.
2. device according to claim 1, is characterized in that, described condenser is air-cooled condenser or water-cooled condenser.
3. utilize device described in claim 1 to realize ORC and produce compressed-air actuated method, it is characterized in that, comprising:
The liquid organic working medium of 1 ~ 2.5bar sends into vaporizer after being pressurizeed by working medium pump, absorbs the energy from the middle-low temperature heat of 80 ~ 300 DEG C, and organic working medium becomes 5 ~ 10bar, the steam of 60 ~ 80 DEG C mutually, then is imported into turbo-expander; While turbo-expander acting, drive and with the turbocompressor of its direct connection, normal air is compressed, realize output squeezing air; After turbo-expander acting, organic working medium is discharged with the vaporous form of 1.5 ~ 3bar and is sent into condenser, then is condensed into liquid state after low-temperature receiver heat release, returns working medium pump entrance, realizes reciprocation cycle with this.
4. method according to claim 3, is characterized in that, described middle-low temperature heat refers to: flue gas, steam or hot water.
5. method according to claim 3, is characterized in that, described organic working medium is freon or silicone oil.
6. method according to claim 3, is characterized in that, described low-temperature receiver is air or water: if adopt air-cooled condenser, low-temperature receiver is air; If employing water-cooled condenser, low-temperature receiver is water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510040875.9A CN104632313B (en) | 2015-01-27 | 2015-01-27 | ORC produces compressed-air actuated method |
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| CN201510040875.9A CN104632313B (en) | 2015-01-27 | 2015-01-27 | ORC produces compressed-air actuated method |
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| CN104632313A true CN104632313A (en) | 2015-05-20 |
| CN104632313B CN104632313B (en) | 2016-09-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201841A (en) * | 2015-09-30 | 2015-12-30 | 杭州哲达科技股份有限公司 | Apparatus and method of preparing compressed air by ORC (organic Rankine cycle) |
| CN106512638A (en) * | 2017-01-04 | 2017-03-22 | 刘民凯 | Method and device for desulfurizing and denitrating flue gas based on cryogenic liquefaction and separation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0250055A (en) * | 1988-08-08 | 1990-02-20 | Yazaki Corp | Rankine cycle engine driving compression freezer |
| JP2000110514A (en) * | 1998-10-05 | 2000-04-18 | Takeshi Hatanaka | Waste heat generating device |
| DE102013019364A1 (en) * | 2013-11-19 | 2014-07-31 | Daimler Ag | Internal combustion engine i.e. lifting cylinder internal combustion engine, for driving passenger car in series automotive industry, has air tank comprising medium, and compressed air supplied by providing energy from air tank |
| CN104632357A (en) * | 2014-12-30 | 2015-05-20 | 清华大学 | Two-stage supercharging system of internal combustion engine |
| CN204511541U (en) * | 2015-01-27 | 2015-07-29 | 沈天昱 | ORC produces compressed-air actuated device |
-
2015
- 2015-01-27 CN CN201510040875.9A patent/CN104632313B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0250055A (en) * | 1988-08-08 | 1990-02-20 | Yazaki Corp | Rankine cycle engine driving compression freezer |
| JP2000110514A (en) * | 1998-10-05 | 2000-04-18 | Takeshi Hatanaka | Waste heat generating device |
| DE102013019364A1 (en) * | 2013-11-19 | 2014-07-31 | Daimler Ag | Internal combustion engine i.e. lifting cylinder internal combustion engine, for driving passenger car in series automotive industry, has air tank comprising medium, and compressed air supplied by providing energy from air tank |
| CN104632357A (en) * | 2014-12-30 | 2015-05-20 | 清华大学 | Two-stage supercharging system of internal combustion engine |
| CN204511541U (en) * | 2015-01-27 | 2015-07-29 | 沈天昱 | ORC produces compressed-air actuated device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201841A (en) * | 2015-09-30 | 2015-12-30 | 杭州哲达科技股份有限公司 | Apparatus and method of preparing compressed air by ORC (organic Rankine cycle) |
| CN106512638A (en) * | 2017-01-04 | 2017-03-22 | 刘民凯 | Method and device for desulfurizing and denitrating flue gas based on cryogenic liquefaction and separation |
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| Publication number | Publication date |
|---|---|
| CN104632313B (en) | 2016-09-28 |
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