JPS594637B2 - Heat source sensible heat recovery device - Google Patents

Description

[Detailed Description of the Invention] Conventionally, for example, high-temperature slag discharged from a blast furnace,
Because it is cooled by water, the sensible heat of the slag is reduced by approximately 50%.
The KCO1/9 slag was wasted into the atmosphere, tons of water was wasted per hour, and the dust of the cooling slag was released into the atmosphere, causing a pollution problem.

The present invention relates to an invention that overcomes these difficulties,
An input chamber with a pressurized atmosphere, which is connected to the pressurization chamber having an opening/closing partition plate, and into which a container for inputting a heat source and collecting a cooling heat source is carried in and out through the chamber; a heat exchange chamber in which a steam generation medium is enclosed which absorbs the sensible heat of the input heat source body through heat exchange; a heat exchange chamber which is connected to the heat exchange chamber and drains the cooling heat source body in the steam generation medium; It is characterized by comprising a recovery chamber equipped with a recovery mechanism for loading the container into the container, and a flash chamber connected to the heat exchange chamber to separate and take out steam from the steam generation medium. The object of the present invention is to provide a device that can effectively recover sensible heat from a high-temperature heat source without causing pollution.

Since the present invention is configured as described above, the heat source is carried by the container through the pressurization and depressurization chambers into the pressurized atmosphere input chamber, and is then input into the steam generation medium in the lower heat exchange chamber. , the sensible heat of the heat source is absorbed by the steam generating medium and cooled,
The cooling heat source in the steam generation medium can be drained by a discharge mechanism in a recovery chamber connected to the heat exchange chamber, loaded into the container, and discharged, and the steam in the steam generation medium generated by the sensible heat absorption can be removed. The heat source is separated and extracted in a flash chamber connected to the heat exchange chamber and supplied as power, and the heat source is input and recovered from the pressurization chamber, the container, and the input chamber, and the structure is relatively simple. This makes it possible to carry in and put in a large amount of heat sources, collect and discharge cooling heat sources without having any particular effect on sensible heat absorption and steam generation in the heat exchange room, and also prevents leakage of gas and dust, etc. In addition to ensuring a pressure atmosphere in the room, the heat exchange chamber and flash chamber allow the steam generating medium to smoothly and efficiently absorb the sensible heat of the heat source, which is not affected by the pressure atmosphere in the charging chamber, and the High-quality steam can be efficiently separated and taken out, and the sensible heat recovery efficiency is significantly increased.In addition, the recovery mechanism allows the cooling heat source in the steam generation medium to be drained and recovered, and the cooling heat source is recovered after the cooling heat source. Processing becomes extremely easy, the amount of steam generation medium can be significantly reduced and used effectively, and the sensible heat recovery processing capacity and sensible heat recovery efficiency of the heat source body are greatly improved.

This sensible heat can be used extremely efficiently, leading to energy savings.

Further, in the present invention, gas and dust generated when cooling the high-temperature heat source are isolated from the outside air in the sealed charging chamber, so that it is possible to prevent pollution problems from occurring.

The present invention will be described below with reference to illustrated embodiments.

Reference numeral 1 denotes a heat source, that is, a high-temperature slag container filled with high-temperature slag 3. Cooled slag 4 is then filled into a recovered slag container 2 as described later. ing.

Reference numeral 6 denotes a pressure reduction chamber, in which an outer partition plate 7 is provided at the atmosphere side opening of the pressure reduction chamber 6 so as to be openable and closable, and an inner partition plate 8 is provided at the opening leading from the pressure reduction chamber 6 to the slag charging chamber 11. A pressurizing valve 9 and a pressure reducing valve 10 are attached to the pressurizing/depressurizing chamber 6.

Furthermore, a pressure control valve 12 is attached to the slag charging chamber 11, so that the pressure within the slag charging chamber 11 is appropriately controlled to a required pressure.

Furthermore, the high temperature slag container 1 in the slag charging chamber 11
A heat exchange chamber 14 is disposed below the slag charging chamber 11, and a slag recovery chamber 15 is disposed below the recovered slag container 2 in the slag charging chamber 11. A flash chamber 16 is provided in communication with the heat exchange chamber 14, the slag recovery chamber 15, and the flash chamber 16.
A container 13 in which a steam generating medium, that is, hot water is sealed, is constructed.

Further, a recovery belt conveyor 17 is disposed between the slag input chamber 11 and the slag recovery chamber 15, and the cooled slag 1 to 4 accumulated in the slag recovery chamber 15 is transferred to the slag input chamber 11 by the recovery belt conveyor 17. The collected slag container 2 inside is filled with the collected slag.

Further, a water supply pipe 18 communicating with the upper part of the slag collection chamber 15
A water supply control valve 19 is installed in the water supply control valve 19.
As a result, the water levels in the heat exchange chamber 14 and the slag recovery chamber 15 are maintained constant.

Furthermore, the heat exchange chamber 14 to the 7 lash chambers 16 are partitioned into upper and lower sections by a rectifying plate 20, and a circulation propeller 21 is disposed at the bottom of the rectifying plate 20.
About twice as much hot water is returned from the flash chamber 16 to the heat exchange chamber 14.

Therefore, in the upper part of the flash chamber 16, a pressure control valve 22 is provided.
One end of the main steam pipe 23 is connected to a safety valve 24 and a gas venting orifice 25, and the other end of the main steam pipe 23 is connected to a steam inlet of a steam turbine 26 as shown in FIG. The steam outlet of the steam turbine 26 is connected to a water supply pipe 18 via a condenser 27, and the water supply pipe 18 has a water supply pump 28 and an air extraction ejector 29 connected in series outside the water supply control valve 19. It has been intervened.

Note that 30 is a generator directly connected to the steam turbine 26, and is rotated by the turbine 26 to generate electricity.

Since the illustrated embodiment is configured as described above, the high-temperature slag 3 at about 1500°C discharged from the blast furnace is opened as shown in FIG. 3 while remaining in the high-temperature slag container 1. After the outside partition plate 7 is closed, the pressurization valve 9 is opened, and the pressurization valve 9 is opened as shown in FIG.
Compressed air is injected into the pressurization chamber 6.

Then, the pressure in the pressurization chamber 6 becomes the pressure P4 in the slag charging chamber 11.
5, the pressurizing valve 9 is closed and the inner partition plate 8 is opened, and then the high temperature slag container 1 and the recovered slag container 2 are carried into the slag input chamber 11, and the As shown in FIG. 6, the high temperature slag 3 is charged from the high temperature slag container 1 into the heat exchange chamber 14 at a fixed position, and the cooled slag cooled to a temperature T of about 100° C. in the slag recovery chamber 15. 4 is loaded into the recovery slag container 2 by the recovery belt conveyor 17.

Furthermore, as shown in FIG. 7, when the discharge of the high temperature slag 3 from the high temperature slag container 1 and the loading of the cooling slag 4 into the recovered slag container 2 are completed, the high temperature slag 3 is removed as shown in FIG. The container 1 and the recovered slag container are placed in a pressurization chamber 6.
After the container is carried into the container, the inner partition plate 8 is closed and the pressure reducing valve 10 is opened, as shown in FIG. 9, thereby lowering the pressure in the pressurizing and depressurizing chamber 6.

When the pressure in this pressurization chamber 6 matches the atmospheric pressure, the 10th
As shown in the figure, after opening the outer partition plate 7 and taking out the high-temperature slag container 1 and the recovered slag container 2 from the pressurization/depressurization chamber 6, the high-temperature slag 3 is filled again as shown in FIG. The high-temperature slag container 1 and the empty recovered slag container 2 are carried into the pressurization and depressurization chamber 6, and the same operations as described above are repeated, and the high-temperature slag 3 is successively introduced into the heat exchange chamber 14 in the container 13. It is possible to exchange heat with the hot water 31 in the container 13 to heat the same hot water 31 to a temperature T3, and collect the slag 4 that has been cooled by the exchange.

The hot water 31 heated to a high temperature T3 through heat exchange with the high-temperature slag 3 flows above the rectifier plate 20, reaches the flash chamber 16, and is reduced to a pressure P3 lower than the pressure P4 in the slag charging chamber 11 and evaporated. , T, becomes steam.

and the evaporatively cooled temperature T. The hot water returns to the heat exchange chamber 14 by the circulation propeller 21, and the hot water 31 is circulated.

Furthermore, the pressure P2 and temperature T of evaporation in the flash chamber 16
The saturated steam of No. 2 is supplied to the main steam pipe 23 equipped with a pressure control valve 32.
After being sent to the steam turbine 26 via the steam turbine 26 and doing work to the turbine 26, it is brought to a temperature T in the condenser 27.

The water is condensed into hot water, which is then sent to the water supply pipe 1 by the water supply pump 28.
8 and returned to the container 13.

The rotation of the turbine 26 causes the generator 30 to generate electricity.

In this way, the thermal energy possessed by the high-temperature slag 3 can be converted and recovered into electrical energy.

In the embodiment, the slag charging chamber 11 is always maintained at a pressure P4 higher than atmospheric pressure, for example, 3.4 atmospheres,
A slightly lower pressure P3 in the flash chamber 16
For example, the steam is reduced to a pressure of 3.0 atmospheres and evaporated, and the turbine 26 is driven by the steam having a saturated steam pressure higher than atmospheric pressure to operate the generator 30, so the thermal efficiency is extremely high.

Furthermore, since the slag charging chamber 11 is always sealed and shut off from the atmosphere by the outer partition plate 7 or the inner partition plate 8, the dust and possibly harmful gases generated when the slag is charged are removed from the slag charging chamber 11. There is no risk of leakage from the chamber 11, and the environment is protected.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to these 571 embodiments, and that various design changes can be made without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

FIG. 1 is a side view schematically illustrating an embodiment of a heat source sensible heat recovery device according to the present invention, FIG. 2 is a schematic diagram of a power generation plant in which a turbine is connected to the same embodiment, and FIGS. 3 to 10 The figures are operation explanatory diagrams illustrating the operation state of the embodiment over time. 1... High temperature slag container, 2... Recovery slag container, 3
...High temperature slag, 4...Cooling slag, 5...Slag during heat dissipation, 6...Pressure/decompression chamber, 7...Outer partition plate, 8
...Inner partition plate, 9...Pressure valve, 10...Pressure reducing valve, 11...Slag charging chamber, 12...Control valve, 13.
... Container, 14... Heat exchange chamber, 15... Slag recovery chamber, 16... Flash chamber, 17... Recovery belt conveyor, 18... Water supply pipe, 19... Water supply control valve ,
20... Current plate, 21... Circulation propeller, 22.
...Pressure control valve, 23...Main steam pipe, 24...Safety valve, 25...Gas vent orifice, 26...Steam turbine, 27...Condenser, 28...Water pump , 29... Air extraction ejector-130... Generator, 31... Hot water.

Claims (1)

[Claims] 1. A charging chamber with a pressurized atmosphere, which is connected to a pressurizing/depressurizing chamber having an opening/closing partition plate, and into which a container for charging a heat source and collecting a cooling heat source is carried in and out through the pressurizing/depressurizing chamber; a heat exchange chamber connected to the lower side and sealed with a steam generation medium that absorbs the sensible heat of the input heat source through heat exchange; and a heat source for cooling the steam generation medium connected to the heat exchange chamber. a collection chamber equipped with a collection mechanism for draining water and loading it into the container;
and a flash chamber connected to the heat exchange chamber for separating and extracting steam from the steam generation medium.