CN203238215U - Power generation device utilizing coke oven raw gas afterheat - Google Patents
Power generation device utilizing coke oven raw gas afterheat Download PDFInfo
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- CN203238215U CN203238215U CN2013202489530U CN201320248953U CN203238215U CN 203238215 U CN203238215 U CN 203238215U CN 2013202489530 U CN2013202489530 U CN 2013202489530U CN 201320248953 U CN201320248953 U CN 201320248953U CN 203238215 U CN203238215 U CN 203238215U
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model provides a power generation device utilizing coke oven raw gas afterheat, belonging to power generation devices utilizing coke oven raw gas preliminary cooling afterheat in steel and coking industry. The power generation device is composed of a flue gas system device and a steam and water system device, wherein the flue gas system device is composed of a total coke oven raw gas collecting pipe, a high-temperature cyclone dust collector, a fire tube boiler, a coal gas cooler and a medium pressure economizer, which are sequentially connected through a flue gas pipeline, the steam and water system device is divided into a low pressure loop and a medium pressure loop, a medium pressure boiler drum is connected with a medium pressure superheater through an extraction tube, and the medium pressure superheater is connected with a steam turbine generator unit and a condenser through a main steam pipeline; the condenser is connected with a deaerator through a pipeline, and the deaerator is respectively connected with a low pressure water supply pump and a medium pressure water supply pump. The power generation device provided by the utility model is stable in operation, high in thermal efficiency, good in starting performance and capable of avoiding air pollution caused by direct emission, perfecting the ecological environment, saving the production cost, improving the circular economy efficiency and generating electric energy to create profits.
Description
Technical field
The utility model belongs to iron and steel and the first cold device for generating power by waste heat of coking industry coal oven dithio-gas, is a kind of waste heat of coke oven crude gas power generation assembly specifically.
Background technology
In process of coking, produce a large amount of raw gas, at present, domestic iron and steel and coking industry all adopt traditional ammoniacal liquor type of cooling aspect the raw gas waste heat utilizing, raw gas leaves coke oven with 650～750 ℃ of temperature, the heat of taking out of accounts for about 32% of coking heat dissipation total amount, raw gas through upcast to pipe bridge, under the common process, spray 70～75 ℃ of cyclic ammonia waters at the pipe bridge place raw gas is cooled to 80～85 ℃, then through primary cooler coal gas is cooled to 21～35 ℃, ammoniacal liquor recycles behind cooling and tar removing.In this process, most of energy that raw gas is taken out of is transferred in the cyclic ammonia water, and having become the weary heat of low temperature can't utilize, at present, domestic iron and steel and coking industry all adopt traditional ammoniacal liquor type of cooling aspect the raw gas waste heat utilizing, and have caused the huge waste of energy.
The utility model content
The utility model is intended to overcome the deficiencies in the prior art, waste heat in a kind of efficiently staged recovery coal oven dithio-gas is provided, greatly reduce the ammoniacal liquor usage quantity when taking full advantage of waste heat, thereby reduce production costs, and produce superheated vapour for generating, stable, level of automation is high, except a small amount of operator of need, equipment can be realized unmanned mostly, the waste heat of coke oven crude gas power generation assembly that coking industry recycling economy cycle efficiency improves.
In order to achieve the above object, the utility model adopts following technological improvement:
The waste heat of coke oven crude gas power generation assembly, consisted of by flue gas system device and boiler circuit device, as technological improvement of the present utility model, the flue gas system device is that coal oven dithio-gas gas gathering manifold, high-temperature cyclone dust extractor, tubular boiler, gas cooler and middle pressure economizer are connected and composed by fume pipe successively, middle pressure economizer exit place is provided with induced draft fan, the outlet of induced draft fan is connected with subsequent production technique, forms the loop; The boiler circuit device is divided into low tension loop and middle hydraulic circuit, wherein low tension loop is that low pressure feed water pump, low pressure drum are connected downtake a and are connected successively with low pressure evaporator, low pressure evaporator is connected upcast a and is connected with the low pressure drum, the low pressure drum connects fairlead a, middle hydraulic circuit is that middle pressure service pump, middle pressure economizer and the pressure drum of being connected connect successively, is connected with downtake b by upcast b between middle pressure drum and the tubular boiler to be connected; Middle pressure drum is connected with middle pressure superheater by fairlead, and middle pressure superheater is connected with condenser with turbine driven set by main steam line; Condenser is connected with deoxygenator by pipeline, deoxygenator respectively with the low pressure feed water pump be connected the pressure service pump and be connected.
As further improvement of the utility model, be provided with the tar spray equipment in the gas cooler, the tar spray equipment is connected with oil residue separator through pipeline, and oil residue separator is connected with low pressure evaporator through the tar pump.
As further improvement of the utility model, the end of fairlead a is connected with deoxygenator, and the other end is connected with low pressure evaporator.
As further improvement of the utility model, on the main steam line between turbine driven set and the middle pressure superheater, on the Residue extraction pipeline of oil residue separator, be equipped with valve on the dust discharge pipeline of high-temperature cyclone dust extractor and on the import and export flue gas duct of tubular boiler.
As further improvement of the utility model, the pipeline between condenser and the deoxygenator is provided with condensate pump.
As further improvement of the utility model, the tubular boiler that is connected with middle pressure drum is no less than one.
The utility model has reached following beneficial effect through above-mentioned technological improvement:
One, device adopts flexibly piecemeal layout, can be according to site space situation dispersed placement, and floor space is little, can take full advantage of site space;
Two, press vaporizer to adopt the tubular boiler module in the device, can arrange as required many tubular boilers, many tubular boiler modules share a drum, can realize many boiler operatiopns, and a boiler cleans or maintenance, thereby realizes a multiplex inspection;
Three, the setting of blower fan, the power that flows as raw gas, and the low temperature coal gas after residual heat boiler for exchanging heat delivered to subsequent production technique, avoiding directly, discharging causes atmospheric pollution.
Four, stable, thermo-efficiency is high, startability good.
Five, can greatly reduce circulating cooling ammoniacal liquor usage quantity, when native system moves, substantially not need to use cyclic ammonia water, thereby realize reducing quantity of wastewater effluent, save production cost when improving the ecological environment.
Six, both can reduce the coking industry production cost, improve recycling economy efficient, can produce electric energy again, create profit.
Description of drawings
Figure is the utility model waste heat of coke oven crude gas power generation assembly one-piece construction schematic diagram.
Embodiment
The waste heat of coke oven crude gas power generation assembly, consisted of by flue gas system device and boiler circuit device, described flue gas system device is that coal oven dithio-gas gas gathering manifold 1, high-temperature cyclone dust extractor 3, tubular boiler 4, gas cooler 5 and middle pressure economizer 6 are connected and composed by flue successively, middle pressure economizer 6 exits are provided with induced draft fan 7, the outlet of induced draft fan is connected with subsequent production technique, forms the loop; The boiler circuit device is divided into low tension loop and middle hydraulic circuit, wherein low tension loop is that low pressure feed water pump 8, low pressure drum 9 are connected with low pressure evaporator and are connected successively by downtake a11, low pressure evaporator 10 is connected with the low pressure drum and is connected by upcast a16, low pressure drum 9 connects fairlead a12, middle hydraulic circuit is that middle pressure service pump 13, middle pressure economizer 6 and the pressure drum 15 of being connected connect successively, is connected with downtake b18 by upcast b17 between middle pressure drum 15 and the tubular boiler 4 to be connected; Middle pressure drum 15 is connected with middle pressure superheater 20 by fairlead, and middle pressure superheater 20 is connected with condenser by main steam line and turbine driven set 21 and is connected; Condenser 22 is connected with deoxygenator 19 by pipeline, deoxygenator 19 respectively with low pressure feed water pump 8 be connected pressure service pump 13 and be connected.
Be provided with tar spray equipment 24 in the described gas cooler 5, tar spray equipment 24 is connected with oil residue separator 25 through pipeline, and oil residue separator 25 is connected with low pressure evaporator 10 through tar pump 26.
The end of described fairlead a12 is connected with deoxygenator 19, and the other end is connected with low pressure evaporator 10.
Between described turbine driven set 21 and the middle pressure superheater 20 on the main steam line 23, on the Residue extraction pipeline of oil residue separator 25, be equipped with valve on the dust discharge pipeline of high-temperature cyclone dust extractor 3 and on the import and export flue gas duct of tubular boiler 4.
Pipeline between described condenser 22 and the deoxygenator 19 is provided with condensate pump 2.
The tubular boiler 4 that described and middle pressure drum 15 is connected is no less than one.
The flue gas system flow process
Flue gas is take the blower fan that is arranged in the outlet of middle pressure economizer module as mobilization force, raw gas from the coal oven dithio-gas gas gathering manifold out, then flow through successively high-temperature cyclone dust extractor, middle pressure superheater module, tubular boiler module, gas cooler, middle pressure economizer module send the subsequent production process pipe back to through blower fan.High temperature raw gas each heating surface in the middle pressure superheater module, tubular boiler module, middle pressure economizer module of flowing through, 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, so that flue-gas temperature progressively reduces, deliver to fans entrance about 200 ℃, then send the subsequent production process pipe back to by induced draft fan.In the gas cooler device, adopt the mode of spray tar to cool off the flue gas of tubular boiler outlet, cooled flue gas is sent to middle pressure economizer module, the thermal tar that produces in this process is pumped to the low pressure evaporator module by tar, heating low pressure evaporator module medium produces low-pressure saturated steam.Cooled tar continues to spray in gas cooler, thereby reaches the purpose that recycles.
The boiler circuit flow process
Low tension loop:
The deoxygenation qualified water is pumped to the low pressure drum by low pressure feed water, water enters low pressure evaporator through downtake, in low pressure evaporator, heated by thermal tar, part becomes saturation steam, steam water interface enters the low pressure drum by upcast, after water separator carried out the carbonated drink separation in the low pressure drum, low-pressure saturated steam was drawn by fairlead.Part low-pressure saturated steam can be used as deoxygenator deoxygenation vapour source, and another part can be incorporated pipe network into.
Middle hydraulic circuit:
The deoxygenation qualified water is delivered to middle pressure economizer by middle pressure service pump, after water is heated certain temperature in middle pressure economizer, enters middle pressure drum.Water enters many tubular boiler modules through downtake, many tubular boilers share a drum, water is heated by high-temperature flue gas in tubular boiler, produce steam water interface and enter middle pressure drum, after the carbonated drink separation, saturation steam enters middle pressure superheater module by fairlead, and in middle pressure superheater module, saturation steam is heated to form middle pressure superheated vapour.Middle pressure superheated vapour is sent to turbine driven set and drives steam turbine power generation, and the weary gas after the steam acting enters condenser, is condensed into water at condenser, and condensed water enters the deoxygenator deoxygenation by condensate pump, and then is sent to boiler and recycles.
Claims (6)
1. waste heat of coke oven crude gas power generation assembly, consisted of by flue gas system device and boiler circuit device, it is characterized in that the flue gas system device is coal oven dithio-gas gas gathering manifold (1), high-temperature cyclone dust extractor (3), tubular boiler (4), gas cooler (5) and middle pressure economizer (6), connected and composed by flue successively, middle pressure economizer (6) exit is provided with induced draft fan (7), the outlet of induced draft fan is connected with the subsequent production process pipe, forms the loop; The boiler circuit device is divided into low tension loop and middle hydraulic circuit, wherein low tension loop is that low pressure feed water pump (8), low pressure drum (9) are connected 10 with low pressure evaporator) by downtake a(11) connect successively, low pressure evaporator (10) is connected 9 with the low pressure drum) by upcast a(16) connect, low pressure drum (9) connects fairlead a(12), middle hydraulic circuit is that middle pressure service pump (13), middle pressure economizer (6) and the pressure drum (15) of being connected connect successively, between middle pressure drum (15) and the tubular boiler (4) by upcast b(17) be connected two-way the connection with downtake b(18; Middle pressure drum (15) is connected with middle pressure superheater (20) by fairlead, and middle pressure superheater (20) is connected 22 with turbine driven set (21) with condenser by main steam line) be connected; Condenser (22) is connected with deoxygenator (19) by pipeline, deoxygenator (19) respectively with low pressure feed water pump (8) be connected pressure service pump (13) and be connected.
2. waste heat of coke oven crude gas power generation assembly as claimed in claim 1, it is characterized in that being provided with in the gas cooler (5) tar spray equipment (24), tar spray equipment (24) is connected with oil residue separator (25) through pipeline, and oil residue separator (25) is connected with low pressure evaporator (10) through tar pump (26).
3. waste heat of coke oven crude gas power generation assembly as claimed in claim 1 is characterized in that fairlead a(12) an end be connected with deoxygenator (19), the other end is connected with low pressure drum (9).
4. waste heat of coke oven crude gas power generation assembly as claimed in claim 1 is characterized in that on the main steam line between turbine driven set (21) and the middle pressure superheater (20), on the Residue extraction pipeline of oil residue separator (25), be equipped with valve on the dust discharge pipeline of high-temperature cyclone dust extractor (3) and on the import and export flue gas duct of tubular boiler (4).
5. such as claim 1 or 4 described waste heat of coke oven crude gas power generation assemblys, it is characterized in that the pipeline between condenser (22) and the deoxygenator (19) is provided with condensate pump (2).
6. waste heat of coke oven crude gas power generation assembly as claimed in claim 1 is characterized in that the tubular boiler (4) that is connected with middle pressure drum (15) is no less than one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202489530U CN203238215U (en) | 2013-05-10 | 2013-05-10 | Power generation device utilizing coke oven raw gas afterheat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202489530U CN203238215U (en) | 2013-05-10 | 2013-05-10 | Power generation device utilizing coke oven raw gas afterheat |
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| Publication Number | Publication Date |
|---|---|
| CN203238215U true CN203238215U (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202489530U Withdrawn - After Issue CN203238215U (en) | 2013-05-10 | 2013-05-10 | Power generation device utilizing coke oven raw gas afterheat |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242865A (en) * | 2013-05-10 | 2013-08-14 | 中国船舶重工集团公司第七�三研究所 | Device and method for generating electricity by utilizing waste heat of raw coke oven gas |
| CN104501198A (en) * | 2014-11-28 | 2015-04-08 | 陈翔 | Heat-conducting oil boiler waste heat power generation system |
| CN104727872A (en) * | 2015-03-25 | 2015-06-24 | 山东钢铁股份有限公司 | Coke oven gas waste heat power generation system |
| CN110056848A (en) * | 2018-04-23 | 2019-07-26 | 新能能源有限公司 | High temperature and high pressure flue gas afterheat utilizing system |
-
2013
- 2013-05-10 CN CN2013202489530U patent/CN203238215U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242865A (en) * | 2013-05-10 | 2013-08-14 | 中国船舶重工集团公司第七�三研究所 | Device and method for generating electricity by utilizing waste heat of raw coke oven gas |
| CN103242865B (en) * | 2013-05-10 | 2014-07-23 | 中国船舶重工集团公司第七�三研究所 | Device for generating electricity by utilizing waste heat of raw coke oven gas |
| CN104501198A (en) * | 2014-11-28 | 2015-04-08 | 陈翔 | Heat-conducting oil boiler waste heat power generation system |
| CN104501198B (en) * | 2014-11-28 | 2018-10-09 | 陈翔 | Heat conducting oil boiler afterheat generating system |
| CN104727872A (en) * | 2015-03-25 | 2015-06-24 | 山东钢铁股份有限公司 | Coke oven gas waste heat power generation system |
| CN110056848A (en) * | 2018-04-23 | 2019-07-26 | 新能能源有限公司 | High temperature and high pressure flue gas afterheat utilizing system |
| CN110056848B (en) * | 2018-04-23 | 2024-05-03 | 新能能源有限公司 | High-temperature high-pressure flue gas waste heat utilization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131016 Effective date of abandoning: 20140723 |
|
| RGAV | Abandon patent right to avoid regrant |