CN105255503A - Coke oven crude gas sensible heat recycling system - Google Patents
Coke oven crude gas sensible heat recycling system Download PDFInfo
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- CN105255503A CN105255503A CN201510638246.6A CN201510638246A CN105255503A CN 105255503 A CN105255503 A CN 105255503A CN 201510638246 A CN201510638246 A CN 201510638246A CN 105255503 A CN105255503 A CN 105255503A
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Abstract
The invention discloses a coke oven crude gas sensible heat recycling system. The coke oven crude gas sensible heat recycling system comprises an oxygen removing device, a steam dome and one or more sets of ascending tube heat exchanger units, and each ascending tube heat exchanger unit is formed by connecting multiple ascending tube heat exchangers in parallel; supplied water is connected with the steam dome through the oxygen removing device, and the steam dome is connected with the ascending tube heat exchangers to form a steam-water loop; the supplied water is conveyed into the steam dome after oxygen in the supplied water is removed through the oxygen removing device, the supplied water in the steam dome is divided into multiple branches to flow through supplied water channels of all ascending tube heat exchangers, the supplied water in the supplied water channels is heated to form a steam-water mixture to be sent back to the steam dome, steam-water separation is conducted on the steam-water mixture in the steam dome, and separated steam is output for use. By means of coke oven crude gas sensible heat recycling system, the defect that the coke oven crude gas working environment is bad is overcome, the defects of a past coke oven crude gas sensible heat recycling technology are overcome, and the sensible heat recycling device and system which are compact in structure, good in effect, stable in operation and convenient to install are provided.
Description
Technical field
The present invention relates to the technical field of waste-heat recovery device, be specifically related to a kind of coal oven dithio-gas cement sensible heat recovery system.
Background technology
Coke oven is in process of coking, and the raw gas that coking chamber output is a large amount of, after coke oven coke oven uprising tube, bridge tube, effuser cooling set, feedingization product system carries out purifying treatment.In a coking cycles, the nearly 10000m of raw gas of single hole coking chamber output
3, raw gas through coke oven coke oven uprising tube temperatures as high 650 DEG C, containing a large amount of sensible heats.Be convenient to follow-up coking process process for reducing coal oven dithio-gas temperature, traditional technology adopts the technical cooling high temperature raw gas of spray ammoniacal liquor chilling, makes raw gas sharply be cooled to 80-85 DEG C.This technical process not only wastes a large amount of crude-gas sensible heats, and consumes a large amount of ammoniacal liquor, wastes a large amount of water resourcess and electric power again, increases sewage discharge.
Summary of the invention
The invention provides a kind of coal oven dithio-gas cement sensible heat recovery system, comprise deoxygenator, drum, a group or more upcast heat exchanger package, described upcast heat exchanger package is composed in parallel by multiple upcast interchanger; Feedwater is connected with described drum by described deoxygenator, and described drum and described upcast interchanger are connected to form a carbonated drink loop;
Feedwater is transported in described drum after described deoxygenator deoxygenation, feedwater in described drum be split into some branches flow through respectively each described upcast interchanger give aquaporin, feed water being sent back in described drum to adding thermosetting steam water interface in aquaporin, steam water interface carbonated drink in described drum is separated, and the steam separated exports and uses.
Preferably, described carbonated drink loop is provided with forced circulation pump.
Preferably, describedly comprise water-in and steam outlet to aquaporin, the water-in of the multiple upcast interchanger in each upcast heat exchanger package is parallel-connected in a water inlet union, each water inlet union is parallel-connected in the total union of a water inlet, and the total union of described water inlet connects described drum by water inlet manifold again;
The steam outlet of the multiple upcast interchanger in each riser heat exchanger package is parallel-connected in a carbonated drink union, and each carbonated drink union is parallel-connected in the total union of carbonated drink, and the total union of described carbonated drink connects described drum by carbonated drink house steward again.
Preferably, described water-in is arranged on the lower end of described upcast interchanger, and described steam outlet is arranged on the upper end of described upcast interchanger.
Preferably, described water inlet manifold is provided with forced circulation pump.
Preferably, described upcast interchanger comprises interior pipe and is set in outer tube on described interior pipe, forms a cavity between described interior pipe and described outer tube, described cavity be supply current warp to aquaporin; Raw gas flows through the inside of described interior pipe, and carries out heat exchange by the feedwater in the tube wall of described interior pipe and described cooling channel.
Preferably, described interior pipe adopts no-welding-seam metal structure.
Preferably, the inner side-wall of described interior pipe is provided with fire resistant anticorrosive and presses down coking coating.
Preferably, be provided with the coil pipe of spirrillum dish on described interior pipe outer side wall or the special-shaped water jacket be arranged in N-type on described interior pipe outer side wall in described cavity, described feedwater flows through described coil pipe or described special-shaped water jacket.
The present invention, owing to adopting above technical scheme, makes it compared with prior art, has following advantage and positively effect:
1) coal oven dithio-gas cement sensible heat recovery system provided by the invention achieves the recovery of coal oven dithio-gas stability and high efficiency, the setting of upcast heat exchanger package, recovery crude-gas sensible heat that can be sufficient, the sensible heat amount of recovery is large, its compact construction simultaneously, produces without impact on coke oven; Stable, non-interference, upcast interchanger is changed, it is more convenient to safeguard;
2) in coal oven dithio-gas cement sensible heat recovery system provided by the invention, adopt upcast interchanger to carry out the recovery of crude-gas sensible heat, its sensible heat amount reclaimed is large, and Exposure degree is effective, and safety performance is high;
3) in coal oven dithio-gas cement sensible heat recovery system provided by the invention, the water inlet manifold of upcast heat exchanger package is provided with forced circulation pump, realize the pump circulation between drum and upcast heat exchanger package, thus make the fluctuation of the temperature of the raw gas flowing through upcast interchanger, output can not have influence on the safety of whole coal oven dithio-gas cement sensible heat recovery system; Meanwhile, the setting of forced circulation pump, the steam being conducive to flowing through upcast interchanger is uniformly distributed.
Accompanying drawing explanation
By reference to the accompanying drawings, by hereafter state detailed description, more clearly can understand above-mentioned and other feature and advantage of the present invention, wherein:
Fig. 1 is the schematic diagram of coal oven dithio-gas cement sensible heat recovery system provided by the invention;
Fig. 2 is the structural representation of upcast heat exchanger embodiments one of the present invention;
Fig. 3 is the structural representation of upcast heat exchanger embodiments two of the present invention.
Embodiment
See the accompanying drawing that the embodiment of the present invention is shown, hereafter in more detail the present invention will be described.But the present invention can realize in many different forms, and should not be construed as by the restriction in the embodiment of this proposition.On the contrary, it is abundant and complete open in order to reach for proposing these embodiments, and makes those skilled in the art understand scope of the present invention completely.In these accompanying drawings, for clarity sake, may be exaggerated size and the relative dimension in layer and region.
With reference to Fig. 1, the invention provides a kind of coal oven dithio-gas cement sensible heat recovery system, comprise deoxygenator 12, drum 5 and a group or more upcast heat exchanger package, often organize upcast heat exchanger package and composed in parallel by multiple upcast interchanger 1; Deoxygenator 12 is connected with drum 5, and drum 5, upcast interchanger 1 and relevant steam-water pipeline are connected to form a carbonated drink loop; Feedwater is transported in drum 5 after deoxygenator 12 deoxygenation, feedwater in drum 5 be split into after flowing out some branches flow through respectively each upcast interchanger 1 to aquaporin, feed water being sent back in drum 5 in aquaporin by the steam water interface that heating obtains, steam water interface carbonated drink in drum 5 is separated, and the steam separated discharges drum 5.Instant invention overcomes the problem of coal oven dithio-gas work corrosion coking, the deficiency of solving in crude-gas sensible heat recovery technology, and this system architecture is compact, respond well, stable, easy for installation.
Concrete, deoxygenator 12 is connected on drum 3 by water service pipe 10, and water service pipe 10 is provided with service pump 11, by the feedwater after deoxygenator 12 deoxygenation, by water service pipe 10 is delivered to drum in after being pressurizeed by service pump 11.
In this enforcement, can refer in coal oven dithio-gas cement sensible heat recovery system include one group of upcast heat exchanger package, also can include two groups or more upcast heat exchanger package, the group number of upcast heat exchanger package can be selected as the case may be, be not restricted herein.
Wherein, in upcast heat exchanger package, include two or more upcast interchanger 1, in parallel relationship between two or more upcast interchanger; Upcast interchanger 1 include that raw gas passage that raw gas flows through and supply water flows through to aquaporin, the lower end of aquaporin is provided with water-in, upper end is provided with steam outlet.
Drum 5 connects to aquaporin in a group or more upcast heat exchanger package by a water inlet manifold 8, carbonated drink house steward 4, forms the loop of work steam circulation.
When including the upcast heat exchanger package of more than a group, in relation in parallel between many group upcast heat exchanger package.One end of water inlet manifold 8 connects drum 5, and the other end is connected in the total union 7 of a water inlet, and total union 7 of intaking distributes multiple water inlet union 6, and each water inlet union 6 correspond to a upcast heat exchanger package; Each water inlet union 6 is diverted to again in the water-in of multiple upcast interchanger 1.Carbonated drink house steward 4 one end connects drum 5, and the other end is connected in the total union 3 of a carbonated drink, and the total union of carbonated drink 3 distributes multiple carbonated drink union 2, and each carbonated drink union 2 correspond to a upcast heat exchanger package; Each carbonated drink union 2 is shunted again and is communicated with the steam outlet of multiple upcast interchanger 1.
When only including one group of upcast heat exchanger package, directly can save the setting into the total union of water 7 and the total union 3 of carbonated drink, water inlet manifold 8 is directly connected in water union 6, and carbonated drink house steward 4 is directly connected in carbonated drink union 3.
The present invention adopts the system of above-mentioned upcast interchanger decoration form, recovery crude-gas sensible heat that can be sufficient, and the sensible heat amount of recovery is large, simultaneously its compact construction, produces without impact on coke oven; Stable, non-interference, upcast interchanger is changed, it is more convenient to safeguard.
In the present embodiment, carbonated drink loop is also provided with forced circulation pump 9, concrete forced circulation pump 9 can be arranged on house steward 8; The present invention arranges by forced circulation pump 9 pump circulation realized between drum 5 and upcast heat exchanger package, thus makes the fluctuation of the temperature of the raw gas flowing through upcast interchanger 1, output can not have influence on the safety of whole coal oven dithio-gas cement sensible heat recovery system; Meanwhile, the setting of forced circulation pump 9, the steam being conducive to flowing through upcast interchanger is uniformly distributed.
In the present embodiment, upcast interchanger 1 mainly includes raw gas passage and to aquaporin, its specific form does not this time limit; Illustrate with regard to specific embodiment below:
Embodiment one
As shown in Figure 2, the present invention can adopt the upcast interchanger 1 shown in Fig. 2.
Concrete, the outer tube 105 that upcast interchanger 1 comprises interior pipe 103 and is set on interior pipe 103, interior pipe 103, in hollow form, forms the raw gas path 10 1 for raw gas circulation; Form a cavity 104 between interior pipe 103 and outer tube 105, cavity 104 is to aquaporin.The lower end of cavity 104 is provided with water-in 107, upper end is provided with steam outlet 108, feeds water and enter in cavity 104 by water-in 107, by the tube wall heat exchange of interior pipe 103, the sensible heat absorbing raw gas heats up and becomes steam water interface, discharges from steam outlet 108; Wherein, water-in 107 is also provided with the water that makes to be entered by water-in 107 diversion member to the circumferential surrounding diffusion of cavity 104, so that make water and interior pipe 103 uniform contact as far as possible, improves heat transfer effect.The lower end of cavity 104 also can be provided with sewage draining exit 109, and heat vaporized for a long time in water ability inner chamber, certainly will have the lower end of certain Impurity deposition at cavity 104, the present invention passes through the setting of sewage draining exit 109, to discharge containing the sewage of depositing contaminants.
In the present embodiment, interior pipe 103 adopts seamless welding metal structure, thus effectively can prevent the direct crevice corrosion of raw gas butt welded seam, to avoid the leakage of heat transferring medium in cavity 104; Wherein, interior pipe 103 can adopt fluting, forging, the method such as expanding, realizes the no-welding-seam structure formation of interior pipe 103, is not restricted herein.
In the present embodiment, the inner side-wall of interior pipe 103 is also provided with fire resistant anticorrosive anti-coking coating 102; Owing to containing H in raw gas
2the Among Corrosive Factors such as S, water vapor and tar, thus cause the corrosion of interior pipe 103, in the life-span of pipe 103 in impact, the easy coking of tar is on the inner side-wall of interior pipe 103 simultaneously, not easily removes, thus causes the inefficacy of heat exchange; The present invention is realized anticorrosion by arranging of fire resistant anticorrosive anti-coking coating 102 and is suppressed coking; this coated material is composited according to one or more in material such as the employing of coke oven practical situation nano paint, alloy etc.; by the making of this special protective coating; further the inner side-wall of pipe in pressure-bearing 103 and raw gas are isolated; prevent the corrosion of internal surface further; and suppress coking clogged with soot, and a small amount of coking is easy to remove, and realizes multiple anti-leak protection.
In the present embodiment, the outside of outer tube 105 is also provided with thermal insulation layer 106, for preventing the loss of heat, makes the sensible heat of raw gas obtain fully enough recovery, reducing ambient temperature simultaneously, improve operating environment.
Upcast function and heat recovery function unite two into one by the present embodiment, effectively reduce on the one hand temperature raw gas enters bridge tube during from the upper end of interior pipe 103, decrease ammoniacal liquor, electric power etc. that subsequent disposal consumes; The heat transferring medium of cavity 104 absorbs heat on the other hand, reclaims the sensible heat of raw gas.
Embodiment two
As shown in Figure 3, the present invention also can adopt the upcast interchanger 1 shown in Fig. 3, and the upcast interchanger 1 in the present embodiment is the distortion of upcast interchanger in embodiment one.
In the present embodiment, the outer tube 112 that upcast interchanger 1 includes interior pipe 110 and is set on interior pipe 110, forms a cavity 114 between interior pipe 110 and outer tube 112; The concrete structure of interior pipe 110 and outer tube can refer to shown in embodiment one, is not restricted herein.
In the present embodiment, the coil pipe 111 on the outer side wall being coiled in interior pipe 110 in the shape of a spiral can be provided with in cavity 114; The lower end of cavity 114 is provided with the water-in 113 be communicated with coil pipe 111, and upper end is provided with the steam outlet 11 be communicated with coil pipe 111 the other end.Coil pipe 111 is tight and on the gapless outer side wall being coiled in interior pipe 110, without any the filling of gas between the outer side wall guaranteeing coil pipe 111 and interior pipe 110, reduces the impact of air thermal resistance on Exposure degree with this with this.
Certainly, coil pipe 111 also can adopt other structure formations to replace, such as, N-shaped can be adopted to be arranged on the special-shaped water jacket of interior pipe outer side wall upper end, and namely a plurality of head and the tail connect vertical tube plates water jacket; Wherein coil pipe, the water jacket form that arranges on inner pipe also can set as the case may be, is not restricted herein.
In the present embodiment, by adding the structure such as coil pipe, special-shaped water jacket in cavity 114, when there is raw leakage in the feedwater in coil pipe or special-shaped water jacket, only can flow in the cavity formed between interior pipe and outer tube, can not carbonizing chamber of coke oven be entered, anything can not be caused to affect on the safety of carbonizing chamber of coke oven.
The specific constructive form of the upcast interchanger 1 provided in the present invention, is not limited to described in above two embodiments, can designs as the case may be, not be restricted herein.
Coal oven dithio-gas cement sensible heat recovery system provided by the invention, its specific works principle is as follows:
Feedwater, by after deoxygenator 12 deoxygenation, is forced through water service pipe 10 by service pump 11 and delivers in drum 5; Water in drum 5 is forced recycle pump 9 along water inlet manifold 8 and pressurizes, the total union 7 of process water inlet, water inlet union 6 enter the water-in of upcast interchanger 1, after upcast interchanger 1 absorbs the partial heat of raw gas, a part of water vapor is formed steam water interface, steam water interface from the steam outlet of upcast interchanger 1 out, enter in drum 5 carry out carbonated drink separation through carbonated drink union 2, the total union 3 of carbonated drink, carbonated drink house steward 4, water reenters water inlet manifold and starts new circulation, and steam is then discharged outside drum 5.
Because those skilled in the art should be understood that the present invention can not depart from the spirit or scope of itself with many other specific forms realizations.Although described case study on implementation of the present invention, the present invention should be understood and should not be restricted to these embodiments, within the spirit and scope of the present invention that those skilled in the art can define as appended claims, make change and amendment.
Claims (8)
1. a coal oven dithio-gas cement sensible heat recovery system, is characterized in that, comprise deoxygenator, drum, a group or more upcast heat exchanger package, described upcast heat exchanger package is composed in parallel by multiple upcast interchanger; Feedwater is connected with described drum by described deoxygenator, and described drum and described upcast interchanger are connected to form a carbonated drink loop;
Feedwater is transported in described drum after described deoxygenator deoxygenation, feedwater in described drum be split into some branches flow through respectively each described upcast interchanger give aquaporin, feed water being sent back in described drum to adding thermosetting steam water interface in aquaporin, steam water interface carbonated drink in described drum is separated, and the steam separated exports and uses.
2. coal oven dithio-gas cement sensible heat recovery system according to claim 1, is characterized in that, described carbonated drink loop is provided with forced circulation pump.
3. coal oven dithio-gas cement sensible heat recovery system according to claim 1, it is characterized in that, describedly comprise water-in and steam outlet to aquaporin, the water-in of the multiple upcast interchanger in each upcast heat exchanger package is parallel-connected in a water inlet union, each water inlet union is parallel-connected in the total union of a water inlet, and the total union of described water inlet connects described drum by water inlet manifold again;
The steam outlet of the multiple upcast interchanger in each riser heat exchanger package is parallel-connected in a carbonated drink union, and each carbonated drink union is parallel-connected in the total union of carbonated drink, and the total union of described carbonated drink connects described drum by carbonated drink house steward again.
4. coal oven dithio-gas cement sensible heat recovery system according to claim 3, is characterized in that, described water-in is arranged on the lower end of described upcast interchanger, and described steam outlet is arranged on the upper end of described upcast interchanger.
5. the coal oven dithio-gas cement sensible heat recovery system according to claim 1 or 3, it is characterized in that, described upcast interchanger comprises interior pipe and is set in outer tube on described interior pipe, forms a cavity between described interior pipe and described outer tube, described cavity be supply current warp to aquaporin; Raw gas flows through the inside of described interior pipe, and carries out heat exchange by the feedwater in the tube wall of described interior pipe and described cooling channel.
6. coal oven dithio-gas cement sensible heat recovery system according to claim 5, is characterized in that, described interior pipe adopts no-welding-seam metal structure.
7. coal oven dithio-gas cement sensible heat recovery system according to claim 5, is characterized in that, the inner side-wall of described interior pipe is provided with fire resistant anticorrosive and presses down coking coating.
8. coal oven dithio-gas cement sensible heat recovery system according to claim 5, is characterized in that, be arranged in the special-shaped water jacket on described interior pipe outer side wall in described cavity in N-type, described feedwater flows through described special-shaped water jacket.
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| CN201510638246.6A CN105255503A (en) | 2015-09-30 | 2015-09-30 | Coke oven crude gas sensible heat recycling system |
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| CN201510638246.6A CN105255503A (en) | 2015-09-30 | 2015-09-30 | Coke oven crude gas sensible heat recycling system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779028A (en) * | 2016-04-07 | 2016-07-20 | 青岛科大隆腾科技发展有限公司 | Raw coke oven gas heat and chemical product simultaneous recovery method based on washing and rectifying |
| CN105779027A (en) * | 2016-04-07 | 2016-07-20 | 青岛科技大学 | Raw coke oven gas heat recovery system and method based on washing and rectifying |
| CN106381155A (en) * | 2016-11-03 | 2017-02-08 | 中冶华天工程技术有限公司 | Coke oven riser waste heat utilization system |
| CN108373925A (en) * | 2018-04-04 | 2018-08-07 | 胡孝晨 | A kind of coal oven dithio-gas sensible heat recycling device |
| CN110499169A (en) * | 2019-09-26 | 2019-11-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Heat recovering device |
| CN111238245A (en) * | 2020-01-14 | 2020-06-05 | 山西东义煤电铝集团煤化工有限公司 | Waste heat recovery device and process for benzene removal of tubeless furnace |
| CN113563912A (en) * | 2021-08-10 | 2021-10-29 | 葛霖 | Coal tar modification and coke oven carbonization chamber top anti-coking method and system |
| CN114836223A (en) * | 2022-05-13 | 2022-08-02 | 安徽工业大学 | Coke oven riser waste heat recovery system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105779028A (en) * | 2016-04-07 | 2016-07-20 | 青岛科大隆腾科技发展有限公司 | Raw coke oven gas heat and chemical product simultaneous recovery method based on washing and rectifying |
| CN105779027A (en) * | 2016-04-07 | 2016-07-20 | 青岛科技大学 | Raw coke oven gas heat recovery system and method based on washing and rectifying |
| CN105779027B (en) * | 2016-04-07 | 2018-10-19 | 青岛科技大学 | Raw coke oven gas heat recovery system and method based on washing rectifying |
| CN105779028B (en) * | 2016-04-07 | 2019-04-19 | 青岛科大隆腾科技发展有限公司 | Raw coke oven gas heat and change based on washing rectifying produce the method recycled simultaneously |
| CN106381155A (en) * | 2016-11-03 | 2017-02-08 | 中冶华天工程技术有限公司 | Coke oven riser waste heat utilization system |
| CN108373925A (en) * | 2018-04-04 | 2018-08-07 | 胡孝晨 | A kind of coal oven dithio-gas sensible heat recycling device |
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| CN110499169A (en) * | 2019-09-26 | 2019-11-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Heat recovering device |
| CN111238245A (en) * | 2020-01-14 | 2020-06-05 | 山西东义煤电铝集团煤化工有限公司 | Waste heat recovery device and process for benzene removal of tubeless furnace |
| CN111238245B (en) * | 2020-01-14 | 2022-06-03 | 孝义市鑫东亨清洁能源有限公司 | Waste heat recovery device and process for benzene removal of tubeless furnace |
| CN113563912A (en) * | 2021-08-10 | 2021-10-29 | 葛霖 | Coal tar modification and coke oven carbonization chamber top anti-coking method and system |
| CN114836223A (en) * | 2022-05-13 | 2022-08-02 | 安徽工业大学 | Coke oven riser waste heat recovery system |
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Application publication date: 20160120 |
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