CN201772424U - Coke oven gas primary-cooling waste-heat boiler - Google Patents
Coke oven gas primary-cooling waste-heat boiler Download PDFInfo
- Publication number
- CN201772424U CN201772424U CN2009202443988U CN200920244398U CN201772424U CN 201772424 U CN201772424 U CN 201772424U CN 2009202443988 U CN2009202443988 U CN 2009202443988U CN 200920244398 U CN200920244398 U CN 200920244398U CN 201772424 U CN201772424 U CN 201772424U
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- superheater
- boiler
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Abstract
The utility model relates to a waste-heat boiler designed for coke oven gas waste-heat recycle, in particular to a device capable of converting heat of raw gas discharged from a coke oven into steam capable of being used for heating and power generation. The waste-heat boiler is characterized in that the boiler comprises a medium-pressure drum, a medium-pressure drum circulating pump, a boiler body, a steam outlet collection box, regulating valves, a cleaning device, a superheater, a soot blower, an evaporator I, an evaporator II, an evaporator III, a tar collection chamber and a raw gas outlet, wherein the medium-pressure drum is connected with the medium-pressure drum circulating pump, the medium-pressure drum circulating pump is connected with the evaporator I, the evaporator II and the evaporator III via the regulating valves, the medium-pressure drum is connected with the superheater, and the superheater is connected with the steam outlet collection box. The waste-heat boiler has the advantages of being capable of reducing coking cost, increasing circulation economical rate, reducing circulating cooling ammonia water volume and water pollution, improving ecological environment and having high thermal efficiency, fine starting performance, reliable operation, small volume, high yield and simple maintenance structure.
Description
Technical field
The utility model relates to and aim at the waste heat boiler device that waste heat of coke oven crude gas reclaims design, is exactly the device that this waste heat boiler can be converted into the heat energy of the raw coke oven gas of coke oven discharge the steam that can be used for heat supply and generating specifically.This device also can be used for other heat recovery scope.
Background technology
Raw coke oven gas leaves coke oven with 650～800 ℃ of temperature, to bridge tube, reduces to 80～85 ℃ with the ammoniacal liquor sprinkling through tedge in discharge, through primary cooler coal gas is cooled to 21～35 ℃ then.Ammoniacal liquor recycles through cooling with after removing tar.The available energy that raw coke oven gas is taken out of accounts for coke oven and always exports 18% of available energy, and major part is transferred in the cyclic ammonia water in this process, and having become the weary heat of low temperature can't utilize, and has caused the huge waste of energy.Wasted a large amount of cyclic ammonia waters simultaneously.With the heat of high temperature of waste heat boiler absorption coal oven dithio-gas, make waste heat boiler produce steam, as generating or explained hereafter thermal source, raw coke oven gas is lowered the temperature in waste heat boiler simultaneously, drops to suitable temperature and discharges boiler.Outside boiler, satisfy subsequent technique by the ammonia spray cooling again and produce needs.By waste heat boiler is set, can reduce spraying ammonia vol significantly, reduce the power consumption of ammoniacal liquor circulating pump, reclaim the heat of coal oven dithio-gas simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of and can adapts to the coke oven condition of work and can high efficiency reclaim the waste heat boiler that the raw coke oven gas heat is also saved a large amount of circulation cooling ammoniacal liquor, the steam that waste heat boiler produces can be used for generating or heat supply, and is all significant to improving iron and steel and coking industry recycling economy circulating ratio reduction steel cost.
The utility model is achieved in that it comprises: middle pressure drum (1), medium-pressure boiler circulating pump (2), pot body (3), steam (vapor) outlet collection case (4), control valve (5), cleaning device (6), superheater (7), soot blower (8), evaporimeter I (9), evaporimeter II (10), evaporimeter III (11), tar collecting chamber (12), raw coke oven gas outlet (13); Wherein pot body (3) is to be made of cleaning device (6), superheater (7), soot blower (8), evaporimeter I (9), evaporimeter II (10), evaporimeter III (11), tar collecting chamber (12), raw coke oven gas outlet (13); The middle drum (1) of pressing is connected with medium-pressure boiler circulating pump (2), medium-pressure boiler circulating pump (2) is connected with evaporimeter I (9), evaporimeter II (10), evaporimeter III (11) respectively by control valve (5), the middle drum (1) of pressing is connected with superheater (7), and superheater (7) is connected with steam (vapor) outlet collection case (4).
The utility model can also comprise some architectural features like this:
1, superheater is made up of horizontal tube coiled pipe or vertical tube panel.
2, evaporimeter is made up of horizontal tube coiled pipe or vertical tube panel.
3, the waste heat boiler heating surface pipe adopts light-pipe structure, arranges that pitch is beneficial to the course of work and blows coming off of the ash and the tar that condenses.
4, the tube wall of pipe adopts thick-walled pipe, and is wear-resisting to adapt under the big dustiness situation pipe, the service life of extension fixture.
5, the form of the utility model employing is two kinds of forms of the horizontal heating surface of horizontal flue, vertical heating surface or vertical flue.
6, during vertical heating surface, heated surface bundle hangs on the boiler steelframe suspension rod, expands downwards when heating surface is heated.During horizontal heating surface, heating surface tube laterally is through in a plurality of tubesheet holes respectively.
7, the flue of waste heat boiler or smoke box all adopt interior insulation, strengthen structure outward, and internal insulation structure is alumina silicate blanket or rock wool heat-preservation material in applying, and are inner casing along the center fixation point to expansion type all around with the combining structure of bar for line.
8, for preventing the flue gas short circuit of heating surface tube interfascicular, reduce the thermal efficiency, the heating surface tube interfascicular is equipped with smoke blocking board, and the shape of smoke blocking board is similar to band steel, in the construction on the inner casing of welding and sidewall.
9, waste heat boiler superheated steam desuperheat adopts outlet spray desuperheating mode.
10, waste heat boiler adopts forced circulation mode or natural circulation mode.
The utlity model has following characteristics:
1, be that a kind of energy recovery that coke oven can be discharged raw coke oven gas is converted into the device that can be used for heat supply or generating.
2, the use of this device can reduce the coking cost, improves the recycling economy rate.
3, use this device can reduce circulation cooling ammonia vol, reduce the water pollution and improve the ecological environment.
4, this device can adapt to the coke oven condition of work and than steady operation.
5, this device thermal efficiency height, starting performance is good, and is reliable.
6, this device volume is little, output is big, maintaining structure is simple.
7, this device has steam soot blowing and ammoniacal liquor cleaning device, guarantees that heating surface can not blocked by tar slag.
Description of drawings
Fig. 1 is the steam generator system structural representation
Wherein: 1, middle pressure drum 2, medium-pressure boiler circulating pump 3, pot body 4, steam (vapor) outlet collection case
5, control valve 6, cleaning device 7, superheater 8, soot blower 9, evaporimeter I
10, evaporimeter II 11, evaporimeter III 12, tar collecting chamber 13, raw coke oven gas outlet
The specific embodiment
The utility model is described in further detail (being example with vertical) below in conjunction with Figure of description:
1, the flow process of flue gas
Flue gas is a mobilization force with the air-introduced machine that is arranged in boiler export, vertically pass each heating surface that is arranged in the boiler bobbin carriage from top to bottom by boiler top boiler gas approach, the medium (vapour, water) that heating is flowed in heating surface tube, because the continuous heat exchange of medium in flue gas and the heating surface tube, make the temperature of flue gas progressively be reduced to outlet at bottom from top to bottom, deliver to the air-introduced machine inlet about 200 ℃.Be furnished with the tar collecting chamber at boiler bottom, be used for being collected in the tar that condenses on the heating surface.
2, boiler circuit flow process (is example with the forced circulation)
As shown in Figure 1, enter drum from the feedwater of feed pump by control valve, other has one the tunnel to enter super-heater exit case as desuperheating water.
The medium-pressure boiler circulating pump will be delivered to the middle inlets such as evaporimeter I, II.. of pressing respectively after the water pressurization from middle pressure drum lower curtate, and water is delivered to the middle drum of pressing heat the generation steam water interface in evaporimeter after.Steam water interface carbonated drink in middle pressure drum is separated, during continuing to be circulated to, water presses the evaporimeter heating evaporation, pressure superheated steam during heating was vaporizated in the pressure superheater during the middle pressure saturated vapor that is separated then entered, this part superheated steam just can be delivered to Turbo-generator Set and drive steam turbine power generation or technology usefulness.
3, blow ash and ammoniacal liquor purging system
Because contain a large amount of dusts and tar in the coal oven dithio-gas, its caking property is very strong, must guarantee that boiler heating surface is not blocked by dust stratification, must blow ash in time, because raw coke oven gas is a flammable explosive gas, so select the steam soot blowing mode.When tar slag was bonded in pipe, the tar slag of selecting ammoniacal liquor to clean heating surface pipe guaranteed the heating surface cleaning.
Claims (2)
1. the first cold waste heat boiler of coke-stove gas is characterized in that it comprises: middle pressure drum, medium-pressure boiler circulating pump, pot body, steam (vapor) outlet collection case, control valve, cleaning device, superheater, sootblower arrangement, evaporimeter I, evaporimeter II, evaporimeter III; Press drum to be connected with the medium-pressure boiler circulating pump in described, the medium-pressure boiler circulating pump is connected with evaporimeter I, evaporimeter II, evaporimeter III respectively by control valve, and middle pressure drum is connected with superheater, and superheater is connected with steam (vapor) outlet collection case.
2. a kind of coke-stove gas according to claim 1 is cold waste heat boiler just, it is characterized in that described pot body is by cleaning device, superheater, soot blower, evaporimeter I, evaporimeter II, evaporimeter III, tar collecting chamber, raw coke oven gas export mixes; Superheater, evaporimeter I, evaporimeter II, evaporimeter III are made up of horizontal tube coiled pipe or vertical tube panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202443988U CN201772424U (en) | 2009-12-21 | 2009-12-21 | Coke oven gas primary-cooling waste-heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202443988U CN201772424U (en) | 2009-12-21 | 2009-12-21 | Coke oven gas primary-cooling waste-heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772424U true CN201772424U (en) | 2011-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202443988U Expired - Fee Related CN201772424U (en) | 2009-12-21 | 2009-12-21 | Coke oven gas primary-cooling waste-heat boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN201772424U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287800A (en) * | 2011-06-10 | 2011-12-21 | 邢同春 | System for producing steam by utilizing coke oven to heat waste gas and waste heat |
| CN103147807A (en) * | 2013-02-27 | 2013-06-12 | 青岛中拓科技有限公司 | Power generation system using waste heat of coke oven crude gas |
| CN103953910A (en) * | 2014-05-16 | 2014-07-30 | 中冶南方工程技术有限公司 | Ammonia water waste heat boiler and technology recycling coke oven flue gas |
| CN107654985A (en) * | 2017-10-17 | 2018-02-02 | 安徽海螺川崎节能设备制造有限公司 | A kind of new cement kiln tail waste heat boiler |
| CN111578247A (en) * | 2020-05-06 | 2020-08-25 | 武汉方特工业设备技术有限公司 | Waste heat recovery system |
-
2009
- 2009-12-21 CN CN2009202443988U patent/CN201772424U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287800A (en) * | 2011-06-10 | 2011-12-21 | 邢同春 | System for producing steam by utilizing coke oven to heat waste gas and waste heat |
| CN103147807A (en) * | 2013-02-27 | 2013-06-12 | 青岛中拓科技有限公司 | Power generation system using waste heat of coke oven crude gas |
| CN103147807B (en) * | 2013-02-27 | 2015-01-14 | 青岛中拓科技有限公司 | Power generation system using waste heat of coke oven crude gas |
| CN103953910A (en) * | 2014-05-16 | 2014-07-30 | 中冶南方工程技术有限公司 | Ammonia water waste heat boiler and technology recycling coke oven flue gas |
| CN103953910B (en) * | 2014-05-16 | 2016-03-02 | 中冶南方工程技术有限公司 | A kind of ammoniacal liquor waste heat boiler and technique reclaiming flue gases of cock oven |
| CN107654985A (en) * | 2017-10-17 | 2018-02-02 | 安徽海螺川崎节能设备制造有限公司 | A kind of new cement kiln tail waste heat boiler |
| CN111578247A (en) * | 2020-05-06 | 2020-08-25 | 武汉方特工业设备技术有限公司 | Waste heat recovery system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20131221 |