JPS61228093A - Fuel gasification apparatus - Google Patents

Abstract

PURPOSE:An apparatus, equipped with the respective specific combustor part, diffuser part, reductor part and nozzle, and capable of providing adaptability responsive to many kinds of coal and gasifying even coal dust and slurry at the same time. CONSTITUTION:A fuel gasification apparatus equipped with a combustor part 3 for burning a fuel, diffuser part 4, positioned thereon, communicating thereto, and capable of dry distilling and thermally decomposing the fuel and mixing the fuel with a high-temperature gas fed from the combustor part 4, reductor part 5, positioned on the diffuser part 4 communicating thereto and capable of carrying out an endothermic gasification reaction and gasifying carbon particles fed from the diffuser part 4 and further a nozzle feeding coal dust, a slurry fuel and heavy oil solely and respectively to the combustor part 3 and diffuser part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a fuel gasifier, particularly coal, COM (
The present invention relates to a gasification device that can simultaneously use various fuels such as coal-oil mixture), CWM (coal-water mixture), petroleum coke, and heavy oil.

(Prior Art) Conventional gasifiers have not been able to use different fuels such as coal, pulverized coal, petroleum coke, and heavy oil at the same time. Regarding coal, there are two options: a pulverized coal supply system or a water slurry supply system, and there is no system that allows both to be used at the same time.

(Problems to be Solved by the Invention) The present invention can accommodate multiple coal types, provides flexibility in coal supply methods, and can simultaneously gasify both pulverized coal and slurry. The present invention aims to provide a gasification device that can use any fuel such as quality oil.

(Means for Solving the Problems) That is, the present invention includes a combustor section that burns fuel to form a high-temperature atmosphere, and a combustor section that is located above the combustor section and communicates with the combustor section to carbonize and heat the fuel. A diffuser section that decomposes the fuel and mixes the high-temperature gas from the combustor section with the fuel, and a diffuser section that is located above the diffuser section and communicates with the diffuser section to perform an endothermic gasification reaction so that the diffuser section and the fuel are mixed together. A fuel gasification system comprising a gas furnace including a reductor section for gasifying carbon particles, and a nozzle section for individually supplying pulverized coal, slurry fuel, and heavy oil to the combustor section and the diffuser section. It is a device.

Hereinafter, one embodiment of the fuel gasification apparatus of the present invention will be described in detail with reference to FIG.

Inside the pressure vessel 1, the whole is surrounded by a relatively thin water-cooled wall 2,
Surcon buster 3 burns fuel to create a high-temperature atmosphere
, is located on the upper part of the combustor 3 and communicates with the combustor 3 to carbonize and thermally decompose the fuel.
a diffuser 4 for mixing high-temperature gas from the fuel with the fuel; and a diffuser 4 located above the diffuser 4.
A gasifier 6 comprising a reductor 5 is inserted, which communicates with the diffuser 4 to perform an endothermic gasification reaction to gasify the carbon particles from the diffuser 4. A heat exchanger group 7 is installed in the upper part of the gasification furnace 6, and an ash hopper 8 is provided in the lower part of the gasification furnace 6.

The gas generated from the gasifier 6 exchanges heat with the heat exchanger group 7 and is supplied to the gas turbine 11 through the desulfurization treatment process 9 and the desulfurization treatment process 10, and the ash discharged from the combustor 3 is sent to the ash hopper 8. The slag is then water-cooled and discharged from the system as water-cooled slag 12.

As mentioned above, the gasifier 6 is composed of a combustor 3, a diffuser 4, and a reductor 5, and is of a two-stage spouted bed type in which a part of the fuel is input into the combustor 3 and the rest is input into the diffuser 4. .

Although the same system is omitted, it is preferable that purified gas obtained by refining generated gas is injected into the space between the pressure vessel 1 and the gasifier 6, so that the pressure in the space between them can be controlled.

As mentioned above, some of the fuel is supplied to the combustor 5 and some to the diffuser 4, but the fuel supply systems can be roughly divided into the pulverized coal supply system 13, the coal-water slurry! A J (CWM) supply system 14 and a heavy oil supply system 15 are provided singly or in combination.

In addition, the gasification agent for fuel is mainly air 16, but in response to the diversification of fuels, it is designed to enrich air with oxygen 17 for backup.The gasification agent is used for gas turbine compressors, booster compressors It is supplied to the combustor 3 via 18.

The pulverized coal supply system 13 is preferably configured as follows, for example.

Coal 19 or petroleum coke 2.0 is pulverized and dried in Mi A/21, and is supplied to combustor 3 and diffuser 4 through cyclone 22, bag filter 23, coal bin 24, and coal lock hopper group 25. It is preferable to install a plurality of supply nozzles so that the number can be controlled according to the load. Note that 26 in the figure indicates exhaust of the carrier gas.

The coal-water slurry supply system 14 is preferably configured as follows, for example.

Coal 27 and water 28 are simultaneously injected into the wet mixer/I/29, slurried, and sent to the combustor 3 in the souffle bump 30.
and is supplied to the diffuser 4.

It is preferable to provide a plurality of supply nozzles so that they can be controlled according to the load.

The heavy oil supply system 15 heats heavy oil such as tar, pitch, asphalt, etc.
and is supplied to the diffuser 4.

Although one embodiment of the fuel gasification device of the present invention has been described, since the fuel gasification device of the present invention is equipped with various fuel supply equipment, it is not only compatible with multiple coal types, but can also be used in combination with various fuels. Depending on the fuel situation, it is possible to use not only pulverized coal alone but also a slurry supply system, and it is also possible to gasify heavy oil at the same time.

Furthermore, as explained in the above embodiment, if the air, which is a gasifying agent, is enriched with oxygen, it becomes possible to enrich oxygen and perform the necessary gasification depending on the fuel. At the same time, it is possible to obtain high calorie gas.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing one embodiment of the fuel gasification apparatus of the present invention. Sub-agents 1) Meifuku agent Ryo Hagiwara -

Claims (1)

[Claims] A combustor section that burns fuel to form a high-temperature atmosphere; a combustor section located above the combustor section that communicates with the combustor section, carbonizes and thermally decomposes the fuel, and mixes the high-temperature gas from the combustor section with the fuel; A gasifier includes a diffuser section for mixing, and a reductor section located above the diffuser section and communicating with the diffuser section to perform an endothermic gasification reaction to gasify carbon particles from the diffuser section. . A fuel gasification device, characterized in that the combustor section and the diffuser section are provided with nozzles that individually supply pulverized coal, slurry fuel, and heavy oil, respectively.