JPS58165526A - Gasified combined generating plant - Google Patents

Abstract

PURPOSE:To improve a response of operation, by further providing a reserved fuel equipment for a combustor of a gas turbine equipment and supplying combustible gas of higher grade calorific value to the combustor from the reserved fuel equipment when a load instruction ''high'' is output. CONSTITUTION:The captioned plant is equipped with a gasifying furnace 1 supplied with inflammable gas 14 obtained from coal, high pressure air 12 from a gas turbine equipment 1a and high temperature steam 13 from a steam turbine equipment 1b. Here produced fuel 11 is fed to a temperature regulating valve 17 and fuel valve 18 through a bypass passage 16 or a heat exchanger 15 to control a fuel flow in such a manner as to meet an output load of the equipment 1a. Here a reserved fuel tank 19 storing inflammable gas having a higher grade calorific value is equipped. Then if a load instruction ''high'' is output to the equipment 1a under a low loaded condition, a regulating valve 21 is opened, and the inflammable gas in the tank 19 is heated by a heat exchanger 20 to increase temperature and then supplied to a combustor 4.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a gasification combined cycle power generation plan (1 gasification combined cycle power generation plan), and particularly relates to a gasification combined cycle power generation plant designed to provide a stable and stable supply even during load fluctuations. Regarding improvements.

[Invention! technical background]

-Ri 2, this moderate power plant is a stone disaster 9 Qi or *
The movable gas obtained by reacting with S is mixed with compressed nitrogen and steam V, and used as a mixed fuel for a gas turbine.
A typical example is that the employee is paid &.

In other words, is the 's1 diagram a water T diagram that shows the schematic system of this Mug plant? The number (11) indicates a small gas furnace, and the number 1 indicates a l
Ib 1g san gas 14, gas turbine & I (1a) or b feed 1j A8 ^ pressure air u1 island air turbine equipment (11
) is sent from ^pressure and ^temperature steam 11s, and the 11I class 1D generated here is passed through the bypass step and the #tTo converter 4 to the temperature-regulating valve αη and the fuel valve ur.
- Now, the output of the gas turbine is set to 6, so that it can be adjusted accordingly.

The gas turbine equipment (, la) is composed of a generator (5), a pressure generator (2), a gas turbine (3), and a rotor (4) connected by one common shaft. The combustor (4) is heated at atmospheric pressure (2).
) (- send, here the above-mentioned Confucian axis and warm house, about 1000
It is sent to the gas turbine (3) as a hot gas of ℃ or higher, where it is heated to 1# and then sent to the gas tank and leakage turbine equipment (11).

Therefore, the 1st air turbine equipment a8 has 1 exhaust heat recovery boil (
6), power generation II (83l) steam turbine with 78 condensers (98 pumps), and these constituent electric appliances C: thus forming an auxiliary loop.

In the above pasting loop, the jibll! gas line XI sent from the gas turbine (3J
I steam is generated and this steam is sent to the steam turbine (7)*
a. Work hard and generate electricity J! I! (The steam that is 81V running and loaded with work is transferred to the condenser (after being recovered in the rice field, it is passed through the pump Ql to the heat converter α9 or P) #Heat recovery boiler (61 to 1I
It's 4 U like LIIL.

[Difficulties with background technology]

By the way, in the above-mentioned equipment, if there is a command to "reduce the output load", the 1fm valve ASV control can send the part corresponding to the load command to the combustor (4), so no inconvenience will occur. There is no, but inverse d2, load command is "
If the load command ri4't: suddenly started from the state of ``Makoto'', this command would result in insufficient fuel to be able to follow the command.・■・.

In other words, only a certain amount of the 1J fly gas produced from the 1 gasifier (1) is pumped, and it is difficult in this world to follow the load command "high"& 2 quickly ε: able to follow +R1kllll.
Purpose of Threatening Duck〕 Book 11 @Hiro In addition to the above points, even when the negative iRh order is “high”, the -maLS- department will be able to follow closely and provide ships *Gasifier Kinobuntsuta Blanc) YIlGll to do vi
i-target.

[Naginari @ Tatami]

The feature of this II @ Mine is that even if there is a load command "for", the fuel reserve equipment Va is opened so that the Il111 class can be immediately supplied to S. One case! The explanation will be made with reference to #& all, but II, iml and --m* portion 6; are given the same reference numerals, and the w&98 line 4f is omitted.

1112g! Okay, the code is in the #l reserve tank, and this ms preliminaries...; Hiro, the l gas with IIk in the ^ position is in line: 'IIc. In addition, the san-ki (4) is connected through the ``Kono-kan'i Riku 6 Nitamijima Exchange House'', and the 4:l II Jl
Valve tail Cal1lj Gt (Nursing) Therefore, now, the gas turbine equipment in the low load layer (ta) I knee negative 1111 order When the ``bird'' character is input, 1- Natsume Benichi enters Sekiguchi, The combustible gas heated from the fuel reserve tank 0 through the heat converter (2) is subjected to a flow rate l11- here, and then f
The load command C is supplied to the Ilk-unit ((transition) in a proportionate manner. Preliminary equipment is generally available from Tomi, and IIA <
= The load V can be output for this lumber plant. In addition, according to the present invention, the No. 6 bonito gas is controlled to match the load command.Since it is equipped with a Qin valve system, it is possible to achieve effects such as continuous rotation with uniformity.

[Brief explanation of the drawing]

Fig. s1 is a schematic system diagram showing a conventional gasification combined power generation plant, and Fig. 112 is a schematic system diagram showing a gasification combined cycle power generation plant according to the present invention. 1'a... Gas turbine equipment ltl... Steam turbine equipment 1... Gasifier 2... Pressure machine 3... Gas turbine 4... Combustor 6... Exhaust Heat recovery boiler 7...Steam turbine 19...Fuel reserve tank 21...Adjusting valve (7317) Yoshihito Patent attorney Nori Chika Keisuke (and 1 other person)

Claims (1)

[Claims] Bird pressure of gas turbine equipment! Air and steam turbine equipment ^
Boki bonito griller C, which sends a mixed fuel of wet steam and movable gas generated from stone iron to a combustor;
A gasification combined cycle power generation plant characterized in that a separate preliminary bonito plant installation 11 is attached.