CN201513900U - Tail gas processing system for jetflow ejector pumping polyester device - Google Patents
Tail gas processing system for jetflow ejector pumping polyester device Download PDFInfo
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- CN201513900U CN201513900U CN 200920173006 CN200920173006U CN201513900U CN 201513900 U CN201513900 U CN 201513900U CN 200920173006 CN200920173006 CN 200920173006 CN 200920173006 U CN200920173006 U CN 200920173006U CN 201513900 U CN201513900 U CN 201513900U
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- tail gas
- jet
- jetflow
- pipeline
- jet ejector
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Abstract
The utility model relates to a process tail gas (containing acetic aldehyde, EA for short) processing system for a jetflow ejector pumping polyester (PET) device, which is used for processing process tail gas exhausted organically by the polyester device. The processing system comprises a jetflow ejector, an incinerator and a flue gas purifying device; a jetflow inlet of the jetflow ejector is connected with a jetflow source pipeline for blowing jetflow medium; a suction inlet of the jetflow ejector is connected with a tail gas source pipeline for blowing tail gas; a jetflow outlet is connected with an incineration object inlet pipeline of the incinerator; and a gas outlet of the incinerator is connected with the flue gas purifying device through a gas pipeline; furthermore, by taking compressed air or pressure steam as the jetflow source, the flow rate of the jetflow medium is controlled to stabilize the pressure of a suction inlet of tail gas, thereby realizing the change of conveying capacity of the jetflow ejector with the variety of tail gas quantity. The utility model has the advantages of simple structure, low investment and running costs, security, reliability, and good processing effect.
Description
Technical field
The utility model relates to a kind of exhaust treatment system, particularly a kind ofly contains the system that the process tail gas of acetaldehyde is handled with jet ejector suction polyester device, belongs to environmental technology field.
Background technology
In production of polyester, acetaldehyde is higher in the tail gas of ethylene glycol knockout tower overhead condenser and the tail gas of polycondensation system, to call high concentration tail gas in the following text.Acetaldehyde is lower in the tail gas of the tail gas of polycondensation system liquid sealing groove, slurry preparation groove etc., to call low concentration tail gas in the following text.Acetaldehyde in the above-mentioned tail gas has all surpassed the discharge standard of national qualification, and with present prior art, still can't the acetaldehyde in the above-mentioned tail gas be reduced in the discharge standard.Burn above-mentioned tail gas and can stop pollution, and can reduce the fuel consumption of incinerator atmosphere.
The processing mode that adopts in producing at present mainly contains two kinds: the one, adopt the blower fan mode of movement, and tail gas is directly sent into the heating agent stove burn; The 2nd, the mode with water at low temperature drip washing captures EA earlier, and the tail gas after the drip washing is entered atmospheric environment, and the washings that contain the EA pollutant are handled by the stripping mode, again the waste gas of stripping formation is sent into incinerator and handles.
Because polyester device waste gas is carried as adopting blower fan, then the restriction of the type selecting of blower fan is more: the one, and EA belongs to B-grade in the first class's class fire risk gas, need select impeller no-spark type explosion-proof fan for use.The 2nd, because waste gas also contains the organic acidity material, certain corrosivity is arranged, cause the material of blower fan need adopt corrosion resistant stainless steel material.The 3rd, the tail gas amount changes with the production load variations of polyester device, therefore need select frequency conversion fan for use, as selects for use the non-frequency blower fan then to need relatively large benefit wind.More than 3 cause the cost of blower fan higher, in addition, need increase table of equipment because of blower fan need overhaul, cause the flow process complexity, and further raise equipment investment.And there is viewpoint to think that steam stripped flow process is carried safer than blower fan behind the water wash, therefore the mode that stripping burns after the employing water washing at present is comparatively general, but because the technical process of this processing mode is unreasonable, need to consume a large amount of cold washing water and stripping steam, operating cost is higher, because the purification efficiency of water washing is relatively low, tail gas after the washing can not satisfy environmental requirement fully, also because low concentration tail gas (tail gas at liquid seal trough and the slurry preparation groove place) operating mode of discharging approaches the operating mode of eluting column cat head, can not handle the low concentration tail gas of discharging effectively in addition.Therefore, need develop a kind of convenient, treatment technology efficiently.
Summary of the invention
In view of there are above-mentioned some shortcomings in existing tail gas of polyester device processing mode, the purpose of this utility model provides a kind of safe, simple, reliable exhaust treatment system.
The technical solution of the utility model is:
A kind of system that handles with jet ejector suction tail gas of polyester device, generally include jet ejector, incinerator and smoke eliminator, the jet import of described jet ejector connects the jet source pipeline of sending into jet media usually, the suction inlet of jet ejector connects the tail gas source capsule road of sending into tail gas usually, jet exit connects the pipeline of the incinerated matter import of described incinerator usually, and the gas vent of described incinerator links to each other with described smoke eliminator by gas pipeline usually.
Described jet source pipeline connects compressed air source or steam source usually.
On the described jet source pipeline automatic regulating valve is set usually.
Described automatic regulating valve is typically provided with the control loop that its aperture and flow are controlled.
Be typically provided with flow detector on the described jet source pipeline and/or on the described tail gas source capsule road, described control loop is inserted on the output line road of described flow detector usually.
Described tail gas source capsule road connects the tail gas outlet of polyester device usually.
Described system is typically provided with the exhaust collection pipeline, can form described tail gas source capsule road or be typically provided with the tail gas jar of exhaust collection, voltage stabilizing, described tail gas jar is typically provided with the tail gas outlet, described tail gas outlet connects the exhaust emission tube road usually, and described exhaust emission tube road can form described tail gas source capsule road.
Described smoke eliminator can connect the gas outlet pipe road.
Described tail gas can generally include high concentration tail gas and/or the not tractable low concentration tail gas of existing vent gas treatment flow process for all discharge tail gas in a organized way of polyester device.
System can adopt compressed air or steam to form jet in the jet induction apparatus, and described compressed-air actuated specification can be 0.3～0.6MPa.
Because the utility model adopts jet ejector to carry out the conveying of tail gas, not only transfer efficiency height, and jet ejector itself is not charged, and does not have tumbler, can not occur therefore having eliminated corresponding potential safety hazard because of spark causes the tail gas blast; And it is simple in structure, does not have moving part, helps increasing the service life; Because the jet source that can adopt steam or compressed air etc. to be easy to obtain in the production of polyester place does not need to carry out water washing, therefore saved a large amount of water that consume under the prior art, can lower production cost significantly; Owing to tail gas is directly burned, so technological process is simple, helps reducing investment and operating cost, and can well be connected with incinerator under the prior art and smoke eliminator, help the difficulty that reduces to apply, be convenient to the user and accept, be convenient to personnel operation; Because whole tail gas are directly burned, because the combustibility of the major pollutants EA in the tail gas is fine, and do not produce secondary pollution in the burning process basically, therefore not only purification efficiency is very high for the utility model, but also be adapted to tail gas under the various operating modes, can with in the production of polyester all in a organized way discharge tail gas together collect and handle, avoided under the prior art low concentration tail gas operating mode because of discharging with the close phenomenon that can't handle of drip washing cat head operating mode, greatly improved disposal ability to tail gas of polyester device, greatly reduced the influence of tail gas of polyester device, thereby realized the cleaner production of polyester device atmospheric environment.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Referring to Fig. 1, the utility model adopts jet ejector to carry out the conveying of tail gas, the exhaust port of polyester device is connected with exhaust collection pipeline or the straight-through tail gas jar that is used to collect with voltage stabilizing tail gas usually, described tail gas jar is provided with the tail gas outlet, described tail gas outlet connects the exhaust emissions pipeline, described exhaust collection pipeline or described exhaust emissions pipeline that dual mode is mentioned can form tail gas source capsule road 5, the above-mentioned equipment that is used to collect tail gas can form tail gas source 6, and described tail gas source can all collect whole tail gas that polyester device produces.Described tail gas can comprise high concentration tail gas and/or the not tractable low concentration tail gas of existing vent gas treatment flow process for all discharge tail gas in a organized way of polyester device.
Described tail gas source capsule road inserts the tail gas suction inlet 4 of jet ejector 11 usually, and jet ejector sucks jet ejector by the negative pressure suction effect of jet with tail gas.
The negative pressure of described jet is as long as form negative pressure with respect to tail gas source pressure.
Because of the pressure of each release of polyester device is normal pressure, therefore, can directly collect the steady production that all tail gas do not influence polyester device with pipeline, the tail gas of collection can directly be sent into the suction inlet of jet ejector.
Under the situation of handling polyester tail gas, according to the reality of production of polyester, steam or compressed air can be adopted usually in the jet media source of described jet ejector, and described compressed-air actuated specification can be 0.3～0.6Mpa.
The industrial steam that described steam can adopt production of polyester to use is to reduce equipment investment and operating cost;
According to applicant's experiment, jet media with compressed-air actuated be good, not only operating cost is low, and helps burning; The compressed air that described compressed air can adopt production of polyester to use.
Can be provided with flow detector on the described jet source pipeline and/or on the described tail gas source capsule road, described control loop is inserted on the output line road of described flow detector usually;
Described jet ejector can adopt prior art, for example common all gases jet pump;
Described flow detector can adopt flowmeter suitable under the prior art, to detect and to obtain real-time data on flows, can realize the control to the tail gas suction pressure thus, and its control mode can adopt suitable prior art;
The outlet 3 of described jet ejector connects the incinerated matter import of incinerator 2 usually by pipeline 1; Described incinerator is typically provided with the exhanst gas outlet after the burning, and the exhanst gas outlet after the described burning connects smoke eliminator by gas pipeline usually.
After the negative pressure suction effect of described jet ejector by jet sucks jet ejector with tail gas, tail gas together comes out from the outlet 3 of jet ejector after mixing with jet media, the gas that inserts incinerator 2 by pipeline burns material inlet, introduce in the incinerator thus and burn, make pollutants such as EA become carbon dioxide and water etc., the flue gas that incinerator produces enters atmosphere through flue gas purification system, because the major pollutants in the tail gas of polyester device are EA, it has good burning performance, sufficient combustion, basically do not produce secondary pollution, therefore incinerator itself adopts under the situation of clean fuel and/or clean combustion technology, and the flue gas of incinerator is very low to the pollution level of air.Therefore on the whole, the utility model can reduce polyester tail gas or other the similar waste gas adverse effect to atmospheric environment significantly.
Under embodiment shown in Figure 1, with polyester device all in a organized way discharge tail gas collect and to deliver to the jet ejector suction inlet, utilize compressed air to spray the negative pressure that produced with the tail gas suction and send into burning in incinerator (heating agent stove) in the jet ejector high speed.The inlet pressure of jet ejector can be controlled by regulating compressed-air actuated flow, to the preferred 10kpa of peak suction of tail gas formation.Under existing production of polyester condition, it is that (this and the compressed-air actuated common-use size of polyester factory adapt 0.6MPa that compressed-air actuated specification can adopt, help utilizing existence conditions), for the polyester device of producing 200000 tons of scales per year, compressed-air actuated consumption is: 150kg/h.
Concrete advantage of the present utility model is mainly manifested in:
1. safer, more reliable
Compare with the blower fan conveying, jet ejector has been avoided tumbler, has reduced potential safety hazard, and simple in structure, basically need not to safeguard and maintenance compared with prior art more simple and reliable (blower fan need to be safeguarded and overhaul, and eluting column then needs the periodic cleaning filler);
2. more environmental protection
Compare with the water wash mode, jet ejector can be delivered to all tail gas of polyester device hot Media Oven and burn, and does not have exhaust emissions when having realized ordinary production. Meet the domestic environmental requirement of more and more paying attention to, meet the trend that polyester device is realized cleaner production.
3. more economical (take the polyester device of producing 200000 tons of scales per year as example)
At first from the equipment investment expense, ten thousand yuan of the about 3-4 of jet ejector, the cost of equipment of blower fan then are more than six times of exhaust ejector; And the equipment investment of water wash mode is more than five times of jet ejector (expenses that do not comprise the increase-volume of stripping system), sees the following form.
Secondly, the operating cost that compares again these three kinds of exhaust gas treating methods, operating cost comprises the Maintenance and Repair expense of public work consumption, equipment depreciation and equipment, the depreciation of equipment and its cost are linear, the Maintenance and Repair expense of equipment and the type of equipment are closely related, obviously, the utility model obviously is less than expense with blower fan and water wash processing mode in this expense aspect two. Compare emphatically below the expense that public work consumes, comparative result sees the following form and (calculates as an example of the polyester device of producing 200000 tons of scales per year example, operating time in year was by 330 days), can find out from the comparative result of following table, the power consumption appropriate litigation fees of public work consumption costs of the present utility model and blower fan, be adopt the water wash mode the public work consumption costs 12.3%.
Annotate: above-mentioned relatively in, tail gas amount benchmark is: 730m3/h
Claims (10)
1. system that handles with jet ejector suction tail gas of polyester device, comprise jet ejector, incinerator and smoke eliminator, the jet import that it is characterized in that described jet ejector connects the jet source pipeline of sending into jet media, the suction inlet of jet ejector connects the tail gas source capsule road of sending into tail gas, jet exit connects the pipeline of the incinerated matter import of described incinerator, and the gas vent of described incinerator links to each other with described smoke eliminator by gas pipeline.
2. according to the described system that handles with jet ejector suction tail gas of polyester device of claim 1, it is characterized in that described jet source pipeline connects compressed air source.
3. according to the described system that handles with jet ejector suction tail gas of polyester device of claim 1, it is characterized in that the jet source pipeline connects the steam source.
4. according to claim 1, the 2 or 3 described systems that handle with jet ejector suction tail gas of polyester device, it is characterized in that on the described jet source pipeline automatic regulating valve being set.
5. according to the described system that handles with jet ejector suction tail gas of polyester device of claim 4, it is characterized in that described automatic regulating valve is provided with the control loop that its aperture and flow are controlled.
6. according to the described system that handles with jet ejector suction tail gas of polyester device of claim 5, it is characterized in that on the described jet source pipeline and/or described tail gas source capsule road is provided with flow detector, described control loop is inserted on the output line road of described flow detector.
7. according to the described system that handles with jet ejector suction tail gas of polyester device of claim 6, it is characterized in that described tail gas source capsule road connects the tail gas outlet of polyester device.
8. according to the described system that handles with jet ejector suction tail gas of polyester device of claim 7, it is characterized in that described system is provided with the exhaust collection pipeline, form described tail gas source capsule road.
9. according to the described system that handles with jet ejector suction tail gas of polyester device of claim 7, it is characterized in that described system is provided with the tail gas jar of exhaust collection, voltage stabilizing, described tail gas jar is provided with the tail gas outlet, described tail gas outlet connects the exhaust emission tube road, and described exhaust emission tube road forms described tail gas source capsule road.
10. according to claim 5,6,7, the 8 or 9 described systems that handle with jet ejector suction tail gas of polyester device, it is characterized in that described smoke eliminator connects the gas outlet pipe road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920173006 CN201513900U (en) | 2009-08-13 | 2009-08-13 | Tail gas processing system for jetflow ejector pumping polyester device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920173006 CN201513900U (en) | 2009-08-13 | 2009-08-13 | Tail gas processing system for jetflow ejector pumping polyester device |
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| Publication Number | Publication Date |
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| CN201513900U true CN201513900U (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920173006 Expired - Lifetime CN201513900U (en) | 2009-08-13 | 2009-08-13 | Tail gas processing system for jetflow ejector pumping polyester device |
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| CN (1) | CN201513900U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425724A (en) * | 2011-08-25 | 2012-04-25 | 厦门卓越生物质能源有限公司 | Tail gas delivery device in bio-diesel production |
| CN104891061A (en) * | 2015-05-04 | 2015-09-09 | 徐进 | Oil and gas recycling system of oil storage tanks |
| CN109084313A (en) * | 2018-08-22 | 2018-12-25 | 天津辰创环境工程科技有限责任公司 | A kind of waste liquid tank field waste gas treatment equipment |
| CN112403208A (en) * | 2020-11-28 | 2021-02-26 | 河南源宏高分子新材料有限公司 | Polyester device tail gas treatment system |
-
2009
- 2009-08-13 CN CN 200920173006 patent/CN201513900U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425724A (en) * | 2011-08-25 | 2012-04-25 | 厦门卓越生物质能源有限公司 | Tail gas delivery device in bio-diesel production |
| CN104891061A (en) * | 2015-05-04 | 2015-09-09 | 徐进 | Oil and gas recycling system of oil storage tanks |
| CN109084313A (en) * | 2018-08-22 | 2018-12-25 | 天津辰创环境工程科技有限责任公司 | A kind of waste liquid tank field waste gas treatment equipment |
| CN112403208A (en) * | 2020-11-28 | 2021-02-26 | 河南源宏高分子新材料有限公司 | Polyester device tail gas treatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170210 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: China National Petroleum Corporation Patentee after: China Kunlun Engineering Co., Ltd. Address before: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee before: China National Petroleum Corporation Patentee before: China Textile Industrial Engineering Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100623 |
|
| CX01 | Expiry of patent term |