JPS6092392A - Synthetic gas producing apparatus and process from carbon-containing material by use of nuclear heat energy - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a helium-cooled nuclear reactor installed in a pressure vessel and a steam capture plant for producing synthesis gas from carbon-containing materials using process heat and process steam. , relates to an apparatus for generating synthesis gas from a carbon-containing material using nuclear thermal energy, comprising a steam superheater for supplying process steam and a steam generator, and a method for generating the same.

[Conventional technology]

In the prior art, a water vapor capreter (Wamssrda
Devices for producing synthesis gas from carbon-containing materials such as coal and coke at high temperatures while supplying water vapor in a mp-fvergaser) are disclosed, for example, in German Patent Publication No. 2553506 and German Patent Application Publication No. 27.
No. 24802.

In both of these known devices, the process heat necessary to maintain the high temperature level (approximately 900° C.) is supplied by a nuclear reactor. In addition, an intermediate circulation circuit in which helium (secondary helium) acts is provided in order to transfer the heat of the core cooling medium (secondary helium) to the steam caplet. This is because, since a steam caprecutter occupies a large volume, it is an unreliable method to place it in a pressure vessel and heat the carbon-containing material directly with primary helium to directly treat it. Similarly, it is less desirable for water vapor capretors installed outside the pressure vessel to operate on primary helium.

A helium/helium heat exchanger is provided in the intermediate circulation circuit, from which secondary helium at a temperature of approximately 900° C. is discharged and led to a steam capturer. In order to maintain this high temperature required for delivery to the steam capturer, the secondary helium must be at least 950 DEG C. as it exits the pressure vessel. Therefore, the structural parts between the pressure vessel and the steam caplet must be able to withstand high temperatures, but with the current state of the art there are no materials reliable enough to operate the device for 30 years. Therefore, in the devices described in the two above-mentioned publications, the development of materials that can be used in the intermediate circulation circuit requires considerable expense.

Furthermore, the intermediate treatment of the secondary circuit between the negative helium and the steam caplet requires considerable expenditure.

In both systems, on the one hand, a helium/5-helium heat exchanger is installed inside the pressure vessel, and on the other hand, all other components of the intermediate circulation system are installed outside the pressure vessel, and the secondary helium flow is This includes the steam superheater and steam generator, which are located behind the steam capturer as seen in the direction. The secondary helium from the steam capturer is first used to superheat the process steam before being conveyed back to the helium/helium heat exchanger through the blow nozzle to provide residual heat to the steam generator.

In the device of German Patent Publication No. 2724802,
In addition, a tube slit furnace (R'6hren) is installed in the intermediate circulation circuit.
spaltofen) and a steam preheater are installed. The steam supplied from the steam generator serves to drive a steam turbine that generates electrical current. The pre-dazzle steam of this steam turbine is then guided as process steam to a steam capturer via a steam preheater and a steam superheater.

[Problem that the invention seeks to solve]

Starting from the prior art as described above, the present invention aims to: 6- build on the above-mentioned problems and avoid the disadvantages due to the use of intermediate circulation circuits in the five types of devices mentioned at the outset;

[Means for solving problems]

In order to solve the above problems, the present invention has the following features.

a) Dedicated conventional methods are provided for heating a steam caprette installed outside the pressure vessel in a manner known per se.

b) A steam superheater and a steam generator are installed one after another in the helium circulation circuit in the reactor in the pressure vessel in the direction of helium flow.

[Action/Effect]

Furthermore, in this device, since the steam caplet is heated in the conventional manner, there is no need to take the intermediate circulation system into consideration in advance. Therefore, members necessary for the intermediate circulation path such as a helium/helium heat exchanger, a secondary helium blower (Geb-1'ase), pipelines, and accessories can be omitted, resulting in significant cost savings. Also, the drive part of this blower is also saved.

Furthermore, since the temperature of some of the high temperature helium is at least 100° C., the cost of research and development of heat transfer members can be saved. The device of the present invention is actually faster to manufacture and requires less risk to the operator or operator.

Furthermore, the feed water temperature and concentration (Gr'a
This has the advantage that it is possible to increase thermal efficiency with a small volume steam generator.

There are also other configurations of the steam capture device according to the invention, and several alternative methods of operating the device.

The first method is to heat the steam caprette with 'w1 air.

The second method is coal, oil, produced gas (Produktga
Smoke gas (R&uchga) obtained by combustion of
s).

In addition to this, it is also possible to heat a steam caprecutter using a part of the carbon-containing material or raw material gas by giving oxygen to it and baking it.

It is also possible to heat the steam caprette by a separate heating circuit operated with steam, helium, etc. and heated in a conventional manner.

In all the aforementioned methods, the process heat for the steam caprecutter obtained by conventional heating can be reduced in another inventive configuration by increasing the final temperature of the superheated process heat. The superheat level of the process heat can also be increased further in a variety of other ways, for example by further supply of nuclear heat, or by subsequent addition of conventional or electrical heat.

〔Example〕

The figure shows a pressure vessel 1 made of prestressed concrete and comprising a nuclear reactor 2 containing a core 3 made of spherical fuel elements. The reactor 2 is cooled by helium (-order helium) circulating in the primary circuit (-order circulation circuit) 4.
When this helium is removed from the core 3, the temperature is 850°C. Inside the pressure vessel 1, a steam superheater 5, a steam generator 6, and a cooling gas blower 7 are also installed in the primary circulation circuit, and the helium cooled to about 300C is supplied to this The reactor 2 passes through the gas blower 7 and returns to the reactor 2.
transported to.

Steam at about 410°C is fed into the steam generator 5 and heated to about 810°C by helium.

The residual heat of helium is fully utilized in the steam generator 6 to generate new steam. The feed water enters the steam generator 6 at 200°C, and the fresh steam having a temperature of 540°C can drive the steam turbine to generate electricity.

A bleeder stream (Anzapfampf) from a steam turbine (not shown) is led to a steam superheater 5.

The superheated steam sent out from the steam superheater 5 is led as process steam to a steam carburetor (gasifier) 8, where it is converted from a carbon-containing material (or coal-containing material) such as coke into synthesis gas at high temperature. generated. Furthermore, this synthesis gas is taken out from the steam carburetor 8 as raw material gas (Rohgas) and purified in the next process. The high temperatures required for synthesis gas production are obtained by a conventional 10-heater 9, which may for example be electrically driven.

〔effect〕

Since the steam carburetor is heated in the conventional manner, there is no need to consider an intermediate circulation circuit in advance. Therefore, components of the intermediate circulation circuit such as helium/helium heat exchangers, secondary helium blowers, conduits, and their accessories can be directly omitted, resulting in a significant cost reduction. Furthermore, the drive for this blower is also saved. Furthermore, because the temperature of -order helium is as high as at least 100° C., the cost of researching and developing heat transfer members increases. The device of the present invention is actually faster to manufacture and requires less risk to the operator or operator.

[Brief explanation of drawings]

In the figure, the thick line that runs through the reactor is the helium circulation path (1
FIG. 2 is a schematic diagram of an embodiment of the present invention showing a next route. 1...Pressure vessel, 2...Nuclear reactor, 3...Reactor core, 4
... Helium circulation path (-next circuit), 5 ... Steam superheater, 6 ... Steam generator, 7 ... Cooling gas blower,
8... Steam caprette, 9... Heating device. Applicant's representative Patent attorney Takehiko Suzue Continued from page 1 0 Inventor Binfried Bach Deutholzl. 0 Inventor Ulrich Peicht Federal Republic of Germany 6941 Kolksheim-Tresekirsienstrasse 25 Federal Republic of the USSR 6940 Weinheim, am Felton 25

Claims (1)

[Scope of Claims] 1. A steam capturer supplied with process heat and process steam to convert carbon-containing material into synthesis gas therein, a steam superheater supplying process steam for the steam carriage, and steam In an apparatus for generating synthesis gas from a carbon-containing material using nuclear thermal energy obtained in a helium-cooled high-temperature reactor installed in a pressure vessel, the steam cartridge (8) is equipped with a generator. A heating device (9) provided outside the pressure vessel (1) and dedicated to the steam carburetor (8) is provided, and the steam superheater (5) and the steam generator (6) are connected to the pressure vessel ( 1) A synthesis gas generation device from a carbon-containing material using nuclear thermal energy, characterized in that the device is sequentially arranged in the helium circulation circuit of the nuclear reactor (2) in the direction of helium flow. 2. The device according to item 1, wherein the steam carburetor (8) is of an electrically heated type. 3. The device according to claim 1, wherein the steam gas carburetor (8) is of a smoke gas heating type obtained by combustion of coal, oil, generated gas, etc. 4. The steam gas carburetor (8) is heated by partially burning a coal-containing substance or a generated raw material gas while supplying oxygen. The device described in. 5. Apparatus according to claim 1, characterized in that said steam cage (8) is heated by other heating means operating with steam, helium or the like.゛6. supplying process heat and process steam to a steam carburetor to internally convert carbon-containing materials into synthesis gas;
A carbon-containing material using nuclear thermal energy obtained in a helium-cooled high-temperature nuclear reactor provided in a pressure vessel by supplying the process steam with a steam superheater and supplying steam to the steam superheater with a steam generator. In a method for obtaining synthesis gas from a nuclear reactor (
In the helium circulation circuit of 2), helium is sequentially supplied to the steam heater (5) and the steam generator (6) provided in the pressure vessel (1), and the final temperature of the superheated process steam is adjusted. 1. A process for producing synthesis gas from carbon-containing materials using nuclear thermal energy, characterized in that the conventionally available process heat supplied to the steam caplet is reduced by increasing the amount of heat generated.