CN1970127A - Device for recovering waste chill of volatile gas - Google Patents
Device for recovering waste chill of volatile gas Download PDFInfo
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- CN1970127A CN1970127A CNA200510124833XA CN200510124833A CN1970127A CN 1970127 A CN1970127 A CN 1970127A CN A200510124833X A CNA200510124833X A CN A200510124833XA CN 200510124833 A CN200510124833 A CN 200510124833A CN 1970127 A CN1970127 A CN 1970127A
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- heat exchanger
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- useless cold
- cold
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
A volatile gas residue cold recovery device comprises a residue cold recover and a heat exchanger combination, with the recover having a volatile gas input and output end, output connecting with the input of the heat exchanger, output of the heat exchanger reconnecting with cold residue input of the recover. Introducing high temperature volatile gas into residue cold recover to exchange heat with the lower temperature cold residue through heat exchanger, and exchanging once again, it reduces the heat load of the heat exchanger, realizing energy saving goals without adding extra output power of the compressor or extra coolant.
Description
Technical field
The present invention is a kind of device for recovering waste chill of escaping gas, refers in particular to the device for recovering waste chill in order to the heat exchanger of handling the escaping gas in the petrochemical field.It is pending escaping gas to be imported a useless cold recover earlier enter heat exchanger again, reducing the thermic load of this heat exchanger, and reaches the purpose of saving the energy.
Background technology
The excessive poisonous volatilization character gas that looses of regular meeting in the petrochemical operations is as various oil gas; Therefore, its effective control must be reclaimed.The mode of conventional process escaping gas liquefies through the multiprogramming cooling nothing more than the gas with high temperature, more environmentally acceptable gas is drained in the atmosphere at last.
Above-mentioned device as volatilization gas liquefaction has comprised a series of heat exchanger such as Fig. 1; By by setting the different treatment temperature of each heat exchanger, make gas pass through the heat exchanger of different work temperature one by one, reduce its gas temperature and simultaneously some the material liquefaction in the gas is collected.Retracting device as above-mentioned escaping gas, first heat exchanger, 11 its processing temperatures that gas initially enters are higher usually, reduce through the gas Yin Wendu after these first heat exchanger, 11 processing, so the processing temperature of second heat exchanger 12 subsequently is just low than first heat exchanger 12, spread to this, the last heat exchanger of the retracting device of this volatilization character gas as the processing temperature of the 4th heat exchanger 14 of Fig. 1, is a lowest in this device.If as the recovery of oil gas, the processing temperature of its each heat exchanger is respectively that first heat exchanger 11 is 3 ℃ as the device of Fig. 1; Second heat exchanger 12 is-30 ℃; The 3rd heat exchanger 13 is-40 ℃; The 4th heat exchanger 14 is-80 ℃; And 40 ℃ oil gas 15 enters first heat exchanger 11 and handles and be about 5 ℃ when discharge the back, and the temperature of discharging by second heat exchanger, 12 backs is-20 ℃ again, and gas 16 temperature of being discharged to the 4th heat exchanger 14 are-60～-70 ℃ according to this.
The gas 16 of last discharge in the said apparatus owing to reached the environmental emission standard, utilizes and directly is disposed in the atmosphere so neither meeting is retained again, so title is cold for giving up.Should be useless cold owing to the dew-point temperature of temperature, so its discharge pipe all need be incubated with anti-condensation far below surrounding air.Though the discharging of useless cold air can not hinder environmental quality,, must in system, establish heat-preserving equipment in addition and the energy such as the electric energy of holding temperature are provided for this useless cold discharging; Only there was not a discharging that utilizes for no reason but be somebody's turn to do useless the cooling, for the obvious only empty power consumption that increases of the running of whole system.
Summary of the invention
Main purpose of the present invention provides a kind of device for recovering waste chill, and the useless cold collection that escaping gas liquefaction recycling back is produced utilizes again, as another heat exchange media of escaping gas; By this, can reduce the thermic load of heat exchanger, and effective energy savings and reach more effective heat exchange effect.
Device for recovering waste chill according to above-mentioned purpose, its preferable enforcement structure comprises: the assembly of a useless cold recover and a heat exchanger, wherein should have an escaping gas input and an output by useless cold recover, this output is connected with the input of heat exchanger, and the output of heat exchanger is connected to the useless cold input of this useless cold recover again.As above-mentioned device for recovering waste chill, pending higher temperatures escaping gas is introduced in this useless cold recover, carry out heat exchange with after reducing temperature with the useless cold air of lower temperature that aforesaid heat exchangers imports, enter the cooling heat exchange of carrying out in the heat exchanger again again; So, just can not cause the excessive thermic load of this heat exchanger, and the homework burden of the heat exchanger of can releiving and equipment power consumption; Moreover, the low temperature that the heat exchanger output is discharged is useless cold to be collected in useless cold recover, again with do not enter the heat exchange of going ahead of the rest of pending volatilization gas before the heat exchanger, it only is this useless cold utilizing naturally, need not strengthen the power output of compressor or additionally add cold coal, therefore, can reach the purpose of saving the energy.
Structural feature of the present invention and effect thereof are clearer to be presented in order to make, and lifts preferred embodiment now and cooperates graphic being described in detail as follows:
Description of drawings
Fig. 1 is the system schematic of existing escaping gas recycling;
Fig. 2 is the wherein structure chart of an embodiment of the present invention;
Fig. 3～Fig. 6 is the structure chart of other embodiment of the present invention.
[primary clustering symbol description]
This case
2,2 ', 2 " useless cold recover
3,3 ', 3 " heat exchanger
21 escaping gas inputs
23 escaping gas outputs
25,25 ', 25 " useless cold input
27,27 ', 27 " useless cold output
31 inputs
33,33 ', 33 " output
40 escaping gases
42 is useless cold
Prior art
11 first heat exchangers
12 second heat exchangers
13 the 3rd heat exchangers
14 the 4th heat exchangers
15 oil gas
16 gases
The specific embodiment
The device for recovering waste chill of the preferable enforcement structure of the present invention is to use in tool volatility or flammable petrochemical industry gas; Be illustrated in figure 2 as the kenel of the useless cold recover of a kind of single hop heat exchanger and single hop, the device for recovering waste chill of this escaping gas, comprise: the assembly of a useless cold recover 2 and a heat exchanger 3, wherein should useless cold recover 2 have an escaping gas input 21 and import, and a volatility gas output end 23 will enter through the escaping gas of these cold recover 2 processing of the giving up input 31 by heat exchanger 3 for escaping gas that will be pending.The aforementioned escaping gas that enters heat exchanger 3 is connected to the useless cold input 25 of this useless cold recover 2 again by its output 33; And the gas after the cold recover 2 that should give up is handled is discharged by the useless cold output 27 of useless cold recover 2 again; Wherein in preferred embodiment of the present invention, useless cold output 27 is to be connected with atmosphere.
Device for recovering waste chill as above-mentioned escaping gas, the escaping gas 40 of relatively-high temperature, in entering heat exchanger 3, carry out being introduced into useless cold recover 2 before the heat exchange cooling, the useless cold input 25 of cold recover 2 was the outputs 33 that are connected in heat exchanger 3 owing to should give up, therefore, the gas of the relatively lower temp after heat exchanger 3 can being handled promptly useless cold 42 is introduced in the cold recover 2 that should give up, do heat exchange with the escaping gas 40 of relatively-high temperature in advance, and reduce the temperature of escaping gas 40; Escaping gas 40 after like this cooling when entering heat exchanger 3 again and carrying out heat exchange process, just can not cause the excessive thermic load of this heat exchanger 3; That is useless cold 42 recyclings that the present invention will be discharged by heat exchanger 3 outputs 33 to be designed to a useless cold recover 2 with heat exchanger function, are lowered the temperature pending gas earlier again by this useless cold recover 2; Because the cooling of useless cold recover 2 operation, it only is the useless cold utilization naturally that heat exchanger 3 is discharged, so, need not strengthen the power output of compressor or additionally add cold coal, operation by this preposition cooling or two sections coolings not only can reach identical or better gas cooling-down effect, and the homework burden of the heat exchanger 3 of can releiving and equipment power consumption, thereby reach the purpose of saving the energy.
Another preferred embodiment of the present invention is illustrated in figure 3 as the kenel of a kind of three sections heat exchangers and three sections useless cold recovers, it is expanded by the basic kenel of assembly of the useless cold recover 2 of Fig. 2 and a heat exchanger 3 to form, and its difference is the escaping gas inputs 21 that are connected to inferior one group useless cold recover 2 at last group of heat exchanger 3 outputs 33 of two assemblys; And the most last group heat exchanger 3 ' output 33 ' is connected in the useless cold input 25 ' of same group useless cold recover 2 '.In this preferred embodiment, each useless cold recover 2 is to link to each other with useless cold input 25 of adjacent another useless cold recover 2 with its useless cold output 27, cold 42 transports to each cold recover 2 that gives up giving up.The internal temperature of the useless cold recover 2 of above-mentioned each is the useless cold recover 2 that is initially entered towards escaping gas 40 by the useless cold 42 useless cold recovers 2 ' that initially enter under heat exchange action " increase progressively.The useless cold recover 2 that above-mentioned escaping gas 40 initially enters ", its useless cold output 27 " preferably be connected to atmosphere.
The preferred embodiment of the device for recovering waste chill of escaping gas as shown in Figure 3 is to form a heat exchange unit with useless cold recover 2 collocation one heat exchanger 3, again this heat exchange unit of array and be unified into the system with several sections different heat exchange temperature; But the another kind of preferred embodiment of the present invention has the thermal effectiveness as several sections temperature of Fig. 3 function equally, but wherein useless cold recover need not attached each heat exchanger setting, but can between several heat exchangers one useless cold recover be set; Or the mode of respectively establishing a useless cold recover in the leading portion and the back segment of device forms.Be the latter as shown in Figure 4, the kenel of a kind of three sections heat exchangers and two sections useless cold recovers; Be the heat exchanger 3 that initially enters respectively at escaping gas 40 " and the most last group of heat exchanger 3 ' useless cold recover 2 ', 2 of locating respectively to arrange in pairs or groups "; And the middle heat exchanger 3 of not establishing useless cold recover, its input 31 and last heat exchanger 3 " output 33 " is connected, its output 33 is connected with a back escaping gas input 21 that gives up cold recover 2; And, the useless cold output 27 ' of useless cold recover 2 ' and the cold recover 2 that gives up " useless cold input 25 " be connected.
Pattern according to earlier figures 3 and Fig. 4 is expanded again, can form the different heat exchange temperature system of multistage more.As expanding again, can form as the four sections heat exchangers of Fig. 5 and the kenel of four sections useless cold recovers by Fig. 3; And, expand again by Fig. 4, can form as the four sections heat exchangers of Fig. 6 and the kenel of two sections useless cold recovers.
As described above the kenel of Fig. 4 and Fig. 6 as can be known, device for recovering waste chill of the present invention, its useless cold recover must not attached each heat exchanger setting; For example meeting under a kind of volatilization gas (as oil gas) processing specification, the heat exchanger of the quantity that must set up standard, but the useless cold heat exchanger by latter end of minimum temperature is discharged, therefore, in this heat exchanger place collocation one useless cold recover, with the useless cold very first time of this minimum temperature is the heat exchange utilization, can receive best heat exchange effect.And in the initial place's of the entering purpose of establishing a useless cold recover of escaping gas, the escaping gas that is intended to initially to enter imports in the cold recover that should give up in advance, by low temperature the useless cold temperature that significantly reduces this escaping gas, enable showing the thermic load that alleviates first heat exchanger; Therefore, in Fig. 4 of the present invention and Fig. 6 preferred embodiment, useless cold recover 2 is that collocation is located at initial and the most last two heat-exchanger 3 places; But, the collocation mode of above-mentioned useless cold recover 2 and heat exchanger 3 does not exceed with above-mentioned exposure kenel, in other feasible embodiment, this device for recovering waste chill can only have a useless cold recover, and can with above-mentioned at first or one of them collocation of the most last heat exchanger.
In sum, the device for recovering waste chill of escaping gas provided by the present invention, the useless cold abundant collection of low temperature that can effectively desire be discharged, and be used in the preceding heat exchange process in advance of heat exchanger; Than prior art, not only more effective energy savings, the power consumption of minimizing equipment, and reach more effective heat exchange effect.
Though preferred embodiment of the present invention has cooperated graphic explanation as above, but structural feature of the present invention is not limited thereto, anyly be familiar with this skill person on the technical foundation that the present invention discloses as described above, can think easily and the derived structure that variation or modification became, the claim that all should be this case contains.
Claims (6)
1. the device for recovering waste chill of an escaping gas is characterized in that, comprising:
One useless cold recover has the input and the output of an escaping gas; And, have a useless cold input and an output;
One heat exchanger has an input and is connected with the escaping gas output of the cold recover that should give up; And an output is connected to the useless cold input of this useless cold recover.
2. device for recovering waste chill as claimed in claim 1 is characterized in that, the described useless cold output that should give up cold recover is to be connected with atmosphere.
3. the device for recovering waste chill of an escaping gas is characterized in that, comprising:
One useless cold recover has the input and the output of an escaping gas; And each useless cold recover has a useless cold input and an output;
One heat exchanger has an input and is connected with the escaping gas output of the cold recover that should give up; And an output is connected to the useless cold input of this useless cold recover;
The assembly of above-mentioned useless cold recover and heat exchanger is more than two groups, and the output of wherein last group heat exchanger is connected in the escaping gas input of time one group useless cold recover; The useless cold output of inferior one group useless cold recover is connected in the useless cold input of last group useless cold recover; And the output of the heat exchanger of last group is connected with the useless cold output of the useless cold recover of this group.
4. device for recovering waste chill as claimed in claim 3 is characterized in that, in the assembly of described should give up cold recover and heat exchanger, and initial useless cold recover and the heat exchanger assembly that imports of escaping gas, useless cold output of its useless cold recover is connected with atmosphere.
5. the device for recovering waste chill of an escaping gas is characterized in that, comprising:
A plurality of heat exchangers, each has an input and an output;
Two useless cold recovers, each has the input and the output of an escaping gas; And, have a useless cold input and an output;
The above-mentioned wherein escaping gas output of a useless cold recover is that the output of the heat exchanger that initially enters with escaping gas is connected; The escaping gas output of another useless cold recover, with escaping gas the input of the heat exchanger of last discharge is connected, this another give up cold recover useless cold input and escaping gas the output of the heat exchanger of last discharge be connected; The useless cold output of this another useless cold recover with this wherein an input that gives up cold recover be connected; The output of the last heat exchanger of these a plurality of adjacent heat exchangers is connected to the input of a back heat exchanger; And the escaping gas output of the previous heat exchanger of the heat exchanger of last discharge is connected to the escaping gas input of aforementioned this another useless cold recover.
6. device for recovering waste chill as claimed in claim 5 is characterized in that, the useless cold recover that heat exchanger described and that escaping gas initially enters is connected, and its useless cold output is connected with atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510124833XA CN1970127A (en) | 2005-11-22 | 2005-11-22 | Device for recovering waste chill of volatile gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510124833XA CN1970127A (en) | 2005-11-22 | 2005-11-22 | Device for recovering waste chill of volatile gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1970127A true CN1970127A (en) | 2007-05-30 |
Family
ID=38111261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200510124833XA Pending CN1970127A (en) | 2005-11-22 | 2005-11-22 | Device for recovering waste chill of volatile gas |
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| Country | Link |
|---|---|
| CN (1) | CN1970127A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332763A (en) * | 2019-08-06 | 2019-10-15 | 巴斯夫新材料有限公司 | Using useless cold auxiliary liquefaction cycle come the system and method for compressed gas |
-
2005
- 2005-11-22 CN CNA200510124833XA patent/CN1970127A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332763A (en) * | 2019-08-06 | 2019-10-15 | 巴斯夫新材料有限公司 | Using useless cold auxiliary liquefaction cycle come the system and method for compressed gas |
| CN110332763B (en) * | 2019-08-06 | 2024-03-29 | 巴斯夫新材料有限公司 | System and method for compressing gas using waste refrigeration assisted liquefaction cycle |
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