JPH0148368B2 - - Google Patents
Info
- Publication number
- JPH0148368B2 JPH0148368B2 JP15384584A JP15384584A JPH0148368B2 JP H0148368 B2 JPH0148368 B2 JP H0148368B2 JP 15384584 A JP15384584 A JP 15384584A JP 15384584 A JP15384584 A JP 15384584A JP H0148368 B2 JPH0148368 B2 JP H0148368B2
- Authority
- JP
- Japan
- Prior art keywords
- steam
- turbine
- heat
- boiler
- coke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000571 coke Substances 0.000 claims description 21
- 239000003245 coal Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 239000000446 fuel Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- 238000004939 coking Methods 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/06—Returning energy of steam, in exchanged form, to process, e.g. use of exhaust steam for drying solid fuel or plant
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はタービン出側の熱回収方法に係り、特
にタービン出側蒸気が比較的に低温、低圧の場合
の回収方法に関し、ボイラーによる動力発生装置
において広く利用することができる。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for recovering heat at the exit side of a turbine, and particularly relates to a method for recovering heat when the steam at the exit side of the turbine is relatively low temperature and low pressure. It can be widely used in devices.
ボイラー蒸気タービンシステムの基本的な形態
は、第３図に示す如くボイラー２で発生した蒸気
はタービン４に供給され発電機６で電力に変換さ
れ、そのタービン出側蒸気は復水器８において海
水等で冷却液化されて給水ポンプ１０にて再びボ
イラー２に循環供給される。
The basic form of the boiler steam turbine system is as shown in FIG. The water is cooled and liquefied by the water supply pump 10 and then circulated and supplied to the boiler 2 again.
これらのタービン出側蒸気は相当の熱量を保有
しているため、従来からその熱の回収が行われて
きた。すなわち、蒸気タービンの抽気を熱源に利
用したものとして、特開昭52−9745、53−88435、
55−98605、55−128608、56−56911、号公報等が
提案されているが、これらはいずれも被加熱体が
液体燃料、燃料ガス、燃焼用空気などの液体や気
体の気化促進や予熱であるため蒸気の圧力が10〜
20Kg／cm2、温度が180〜220℃にも達する高圧、高
温の蒸気を抽気してその熱量を利用したものであ
る。 Since these turbine outlet steams have a considerable amount of heat, the heat has been recovered from the past. That is, Japanese Patent Application Laid-open No. 52-9745, 53-88435,
No. 55-98605, No. 55-128608, No. 56-56911, etc. have been proposed, but in all of these, the heated object is used to promote vaporization or preheat the liquid or gas such as liquid fuel, fuel gas, or combustion air. Because of this, the pressure of steam is 10~
It extracts high-pressure, high-temperature steam that reaches 20 kg/cm 2 and a temperature of 180 to 220°C and utilizes its heat quantity.
しかしながら、例えばタービン出側蒸気の圧力
が0.5〜1.5Kg／cm2、温度が100〜120℃程度の低
圧、低温の蒸気は有効に利用されることなく、そ
の保有熱量は復水器８で無駄に海水中等に廃棄さ
れていた。 However, for example, low-pressure, low-temperature steam with a pressure of 0.5 to 1.5 Kg/cm 2 and a temperature of 100 to 120 degrees Celsius at the outlet of the turbine is not effectively used, and its retained heat is wasted in the condenser 8. It was disposed of in seawater etc.
本発明の目的は、上記従来技術の問題点を解決
し、低圧、低温のタービン出側熱を有効に利用で
きるタービン出側における熱の回収方法を提供す
るにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a method for recovering heat on the turbine outlet side, which solves the problems of the prior art described above and can effectively utilize low-pressure, low-temperature turbine outlet heat.
本発明の要旨とするところは次の如くである。
すなわち、ボイラーからの蒸気でタービンを駆動
しそのタービン出側蒸気を液化して該ボイラーに
循環供給する動力発生装置のタービン出側の熱回
収方法において、前記タービン出側蒸気を熱源と
して固体の原料、燃料を乾燥もしくは予熱するこ
とを特徴とするタービン出側の熱回収方法であ
る。
The gist of the present invention is as follows.
That is, in a method for recovering heat from a turbine outlet of a power generation device in which a turbine is driven by steam from a boiler, the turbine outlet steam is liquefied and circulated to the boiler, a solid raw material is recovered using the turbine outlet steam as a heat source. This is a method for recovering heat at the exit side of a turbine, which is characterized by drying or preheating the fuel.
本発明者らはボイラー等で、発生する蒸気の圧
力、温度が低く、従つてタービン駆動後の出側蒸
気が低圧、低温であつても、固体の鉱石、コーク
ス、石炭等の原料や燃料の乾燥もしくは予熱に利
用できることを見い出し、本発明を完成すること
ができた。 The present inventors have discovered that the pressure and temperature of the steam generated in boilers and the like are low, and even if the output steam after driving the turbine is low pressure and low temperature, it is possible to use raw materials such as solid ore, coke, coal, etc. or fuel. They discovered that it can be used for drying or preheating, and were able to complete the present invention.
本発明の詳細を第１図に図示の例により説明す
る。ボイラー２で発生した蒸気は送風機１２およ
び発電機６にそれぞれ連動している２基のタービ
ン４に導入されそれらを駆動した後低温、低圧蒸
気となり加熱装置１４において固体の原料、燃料
を乾燥予熱を行う。低温、低圧蒸気は加熱装置１
４においてその一部は凝縮して潜熱を発生し原
料、燃料を加熱する。一部が凝縮した低温、低圧
蒸気は復水器８において完全に液化されて約40℃
の水となり給水ポンプ１０により再びボイラー２
に送られる。 The details of the invention will be explained using the example shown in FIG. The steam generated in the boiler 2 is introduced into two turbines 4 which are connected to a blower 12 and a generator 6, respectively, and after driving them, it becomes low temperature, low pressure steam and is used in a heating device 14 to dry and preheat solid raw materials and fuel. conduct. Heating device 1 for low temperature and low pressure steam
In step 4, a part of it condenses and generates latent heat to heat the raw material and fuel. The partially condensed low-temperature, low-pressure steam is completely liquefied in condenser 8 at approximately 40°C.
water becomes boiler 2 again by water supply pump 10.
sent to.
加熱装置１４における熱源は低圧、低温の蒸気
であるが、加熱の目的が固体の原料、燃料の乾燥
や予熱であるから有効にその潜熱を利用すること
ができる。 The heat source in the heating device 14 is low-pressure, low-temperature steam, and since the purpose of heating is drying or preheating solid raw materials or fuel, its latent heat can be effectively utilized.
またボイラー２の蒸気発生用の熱源としては、
通常の燃料ガス、重油等の燃料の他に、スラグ、
焼結鉱、赤熱コークス等の熱回収によつて得られ
た顕熱を利用することができる。 In addition, as a heat source for steam generation in boiler 2,
In addition to fuels such as normal fuel gas and heavy oil, slag,
Sensible heat obtained by recovering heat from sintered ore, red hot coke, etc. can be used.
最も好適な例としてボイラーの加熱源にコーク
ス乾式消火設備（コークス装入量60t／Ｈ）を使
用した例を第２図により説明する。コークス炉１
６から排出されたコークスは、約1000℃の赤熱状
態にあるので閉回路を循環する循環ガスでコーク
スを冷却し、その循環ガスの顕熱を蒸気としてボ
イラーで回収するのである。
As the most preferable example, an example in which a coke dry extinguishing system (coke charge amount: 60 t/h) is used as the heating source of the boiler will be explained with reference to FIG. coke oven 1
Since the coke discharged from 6 is red-hot at about 1000℃, the coke is cooled by circulating gas that circulates in a closed circuit, and the sensible heat of the circulating gas is recovered as steam in the boiler.
コークス炉１６から押出された赤熱コークス１
８はコークス乾式消火設備２０へ装入され、循環
ガス２２（CO：20％、H2：10％、N2：68％）に
より200℃まで冷却され高炉、コークスヤード等
に送られる。一方、循環ガス２２は赤熱コークス
１８により180℃から850℃まで加熱された後、ボ
イラー２に導入され、圧力50Kg／cm2、温度400℃
の蒸気30t／Ｈを生成した後温度が180℃に下り再
びコークス乾式消火設備２０に循環ブロワ２４を
介して送風される。 Red-hot coke 1 extruded from coke oven 16
8 is charged into coke dry extinguishing equipment 20, cooled to 200°C by circulating gas 22 (CO: 20%, H 2 : 10%, N 2 : 68%), and sent to a blast furnace, coke yard, etc. On the other hand, the circulating gas 22 is heated from 180°C to 850°C by the red-hot coke 18, and then introduced into the boiler 2 at a pressure of 50 Kg/cm 2 and a temperature of 400°C.
After generating 30 t/H of steam, the temperature drops to 180° C., and the air is again blown to the coke dry extinguishing equipment 20 via the circulation blower 24.
生成された蒸気はタービン４に至り約
5000KWH／Ｈを発電した後圧力0.5Kg／cm2、温度
110℃の低温、低圧蒸気となり原料炭乾燥装置２
６に送られ、原料炭250t／Ｈを乾燥し水分含有量
を8.5％から5.0％に低減する。水分5.0％に乾燥さ
れた原料炭はコークス炉１６に装入される。一
方、原料炭乾燥装置２６において原料炭を乾燥し
一部凝縮した蒸気は復水器８で完全に凝縮され給
水ポンプ１０を経てボイラー２に送られる。 The generated steam reaches the turbine 4 and is approximately
After generating 5000KWH/H, the pressure is 0.5Kg/cm 2 and the temperature
Coking coal drying equipment 2 becomes low-temperature, low-pressure steam at 110℃
6, the raw coal 250t/h is dried and the moisture content is reduced from 8.5% to 5.0%. The raw coal dried to a moisture content of 5.0% is charged into a coke oven 16. On the other hand, the steam partially condensed after drying the raw coal in the raw coal drying device 26 is completely condensed in the condenser 8 and sent to the boiler 2 via the water supply pump 10.
本実施例においては、隣接するコークス乾式消
火設備に付帯するタービン出側蒸気を熱源とする
ので特別な熱回収設備を設置することなく、従来
の原料炭乾燥装置２６を利用してコークス用原料
炭の乾燥を可能とし石炭の乾留熱量を約53×
103Kcal／Ｔ程低減することができた。なお、副
次的な効果としてコークスの塊歩留と強度を向上
し、復水器８の海水ポンプ電力を削減することが
できた。 In this embodiment, the steam from the turbine outlet attached to the adjacent coke dry extinguishing equipment is used as the heat source, so the conventional coking coal drying device 26 is used to dry the coking coal for coke without installing any special heat recovery equipment. The heat of carbonization of coal can be reduced by approximately 53 times.
A reduction of about 10 3 Kcal/T was achieved. Incidentally, as a secondary effect, the coke lump yield and strength were improved, and the seawater pump power of the condenser 8 could be reduced.
本発明はタービン出側の低温、低圧蒸気を熱源
として固体の原料、燃料を乾燥もしくは予熱する
ことによつて、ボイラー等からの動力発生装置の
比較的に低圧、低温の蒸気の熱を有効に回収する
ことができた。
The present invention effectively utilizes the heat of relatively low-pressure, low-temperature steam from a power generation device such as a boiler by drying or preheating solid raw materials and fuel using the low-temperature, low-pressure steam at the exit side of the turbine as a heat source. I was able to recover it.
第１図は本発明のタービン出側の熱回収を示す
系統図、第２図は本発明の原料炭乾燥実施例を示
す系統図、第３図は従来の蒸気タービンの蒸気の
流れを示す系統図である。
２……ボイラー、４……タービン、８……復水
器、１０……給水ポンプ、１４……加熱装置、２
６……原料炭乾燥装置。
Fig. 1 is a system diagram showing heat recovery on the turbine exit side of the present invention, Fig. 2 is a system diagram showing an embodiment of coking coal drying of the present invention, and Fig. 3 is a system diagram showing the flow of steam in a conventional steam turbine. It is a diagram. 2...Boiler, 4...Turbine, 8...Condenser, 10...Water pump, 14...Heating device, 2
6... Raw coal drying equipment.
Claims (1)
タービン出側蒸気を液化して該ボイラーに循環供
給する動力発生装置のタービン出側の熱回収方法
において、前記タービン出側蒸気を熱源として固
体の原料、燃料を乾燥もしくは予熱することを特
徴とするタービン出側の熱回収方法。 ２ コークス炉のコークス乾式消火設備に付帯す
る前記ボイラーからの蒸気で駆動される前記ター
ビン出側蒸気を熱源として前記コークス炉のコー
クス用原料炭を乾燥する特許請求範囲の第１項に
記載のタービン出側の熱回収方法。[Scope of Claims] 1. A method for recovering heat from a turbine outlet of a power generation device in which a turbine is driven by steam from a boiler, and the turbine outlet steam is liquefied and circulated to the boiler. A method for recovering heat from the turbine exit side, which is characterized by drying or preheating a solid raw material or fuel as a heat source. 2. The turbine according to claim 1, which dries coking coal for coke in the coke oven using steam at the exit side of the turbine as a heat source, which is driven by steam from the boiler attached to the coke dry extinguishing equipment of the coke oven. Outlet heat recovery method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15384584A JPS6131606A (en) | 1984-07-24 | 1984-07-24 | Heat collecting method on the output side of a turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15384584A JPS6131606A (en) | 1984-07-24 | 1984-07-24 | Heat collecting method on the output side of a turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6131606A JPS6131606A (en) | 1986-02-14 |
| JPH0148368B2 true JPH0148368B2 (en) | 1989-10-19 |
Family
ID=15571354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15384584A Granted JPS6131606A (en) | 1984-07-24 | 1984-07-24 | Heat collecting method on the output side of a turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6131606A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI80757C (en) * | 1988-06-30 | 1990-07-10 | Imatran Voima Oy | KOMBINERAT GASTURBINS- OCH AONGTURBINSKRAFTVERK OCH FOERFARANDE FOER ATT UTNYTTJA BRAENSLETS VAERME-ENERGI FOER ATT FOERBAETTRA KRAFTVERKSPROCESSENS TOTALA VERKNINGSGRAD. |
-
1984
- 1984-07-24 JP JP15384584A patent/JPS6131606A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6131606A (en) | 1986-02-14 |
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