CN101091044A

CN101091044A - Gas calorie variation suppressor, fuel gas supply facility, gas turbine facility and boiler facility

Info

Publication number: CN101091044A
Application number: CNA200480044726XA
Authority: CN
Inventors: 佐香正明; 藤崎悠二郎; 大田秀明; 原田英一; 广川雅俊; 野中嘉治
Original assignee: Kawasaki Jukogyo KK
Current assignee: Kawasaki Motors Ltd
Priority date: 2004-12-27
Filing date: 2004-12-27
Publication date: 2007-12-19
Anticipated expiration: 2024-12-27
Also published as: JP4326566B2; JPWO2006070442A1; KR100875497B1; BRPI0419147A; WO2006070442A1; BRPI0419147B1; KR20070086401A; TW200622092A; CN100593633C; TWI276737B

Abstract

This present invention provides a gas calorie variation suppressor capable of supplying a low calorie gas as stabilized fuel by suppressing variation in its calorie. The calorie variation suppressor comprises a buffer tank (10) for storing a low calorie gas temporarily arranged in a low calorie gas supply pipe (3) for supplying a low calorie gas as a fuel gas to a gas turbine (2), an inlet (10a) formed in the tank (10) and communicating with the upstream side of the low calorie gas supply pipe (3), an outlet (10b) communicating with the downstream side of the low calorie gas supply pipe (3), and an inclining pipe member formed continuously with the low calorie gas supply pipe (3) communicating with the inlet (10a) and inclining upward.

Description

Heat release in gas region variation suppressing, fuel gas supply equipment, gas-turbine plant and boiler equipment

Technical field

The present invention relates to heat release in gas region (calorie) variation suppressing, fuel gas supply equipment, gas-turbine plant and boiler equipment.In more detail, relating at the gas as the fuel of fuel-burning equipment is under the situation of the such heating value change of lower calorific value gas, can suppress the heat release in gas region variation suppressing of this heating value change, gas-turbine plant and the boiler equipment as fuel-burning equipment that possesses the fuel gas supply equipment of this heat release in gas region variation suppressing and possess fuel gas supply equipment.

Background technique

In the ironmaking field, for example blast furnace process is produced under the situation of the pig iron, as bi-product gas, blast furnace gas (Blast Furnace Gas is hereinafter to be referred as BFG) takes place from blast furnace.The gross calorific power of BFG even reach heating value only about half of of employed coke, therefore in order to reduce the manufacture cost of the pig iron, BFG is used widely in Iron And Steel Plant.3000Nm takes place for 1 ton in every input ³, it consists of, CO ₂10～18%, CO22～30%, N ₂52～60%, hydrogen 0.5～4%, CH ₄Be 0.5～3%.

In addition, blast furnace gas also comprises flue dust 2～10g/Nm ³, therefore it is carried out dedusting to 0.01g/Nm with deduster ³About then just as heating value 800kcal/Nm ³About fuel gas be used in hot blast stove, coke furnace, oven, blast furnace etc.In recent years, also by means of the raising of this technology, the lower calorific value gas that can burn uses the example that generates electricity increasing as gas turbine fuel blast furnace gas always in gas turbine.As everyone knows, so-called lower calorific value gas is meant that its heating value is about 12MJ/Nm ³Following gas.The lower calorific value gas blast furnace gas (BFG) that is not limited to as described below also comprises coke oven gas (COG), converter gas multiple gases such as (LDG).

On the other hand, the new ironmaking process beyond the blast furnace process (for example directly reduction system such as FINEX and COREX iron processes) obtains exploitation in recent years, and the combustion manner that effective utilization of the bi-product gas that such new process is taken place also can be suitable for remains exploitation.The characteristic (gas composition and heating value) of the bi-product gas that any ironmaking process takes place is different because of equipment and content of operation all, even at every moment change, be not certain corresponding to each Material Characteristics and course of reaction with same equipment yet.

With regard to the most important characteristic under the situation that bi-product gas is used as the fuel of gas turbine, be with regard to the heating value, under the situation of the upper limit (pact+10% of the value that for example on average generates heat) of the permission amplitude of fluctuation that surpasses the intrinsic heating value of each gas turbine, just under the situation that heating value sharply increases, sometimes the combustion temperature in the burner of gas turbine sharply rises to abnormal high temperature.Therefore cause drawbacks such as the stator vane (stator blade) of firing chamber part, gas turbine and the impaired lost of life of rotor blade (movable vane), gas-turbine plant is difficult to move continuously economically.

For the heating value that suppresses bi-product gas rises the known nitrogen (N that utilizes ₂) dilution technology (reference example such as patent documentation 1 and patent documentation 2).But under the situation of the heating value change of bi-product gas, sometimes only utilize N ₂The dilution bi-product gas will be suppressed at this change in the intrinsic permission heating value amplitude of fluctuation of gas turbine and allow in the heating value change speed is not enough.This is because under the situation of the heating value drastic change of bi-product gas, the response of heating value detector is slow, sometimes can not in time dilute, and under the situation of the inactive gas of a large amount of consume expensive of having to, it is difficult guaranteeing to make it to be inhibited.

Therefore, for the not too violent BFG of the flutter of bi-product gas, only use N ₂Dilution can successfully manage.And in methods such as directly reduction system iron processes, the reaction furnace of small capacity starts repeatedly, stops, so the change of the generating capacity of gas and heating value is very remarkable, therefore just utilizes N ₂Dilute and be difficult to tackle.

Patent documentation 1: the spy opens the 2002-155762 communique

Patent documentation 2: the spy opens flat 9-317499 communique

Summary of the invention

The present invention makes for solving such problem, its purpose is, the fuel such as lower calorific value gas that offer fuel-burning equipment by suppressing the to act as a fuel heating value change of gas is provided, can be effectively and easily utilize inactive gas dilution fuel gas, and can not utilize the heat release in gas region variation suppressing of inactive gas dilution, gas-turbine plant and the boiler equipment that possesses the fuel gas supply equipment of this heat release in gas region variation suppressing and possess this fuel gas supply equipment.

To achieve these goals, heat release in gas region variation suppressing of the present invention possesses: fuel gas is offered fuel-burning equipment acts as a fuel and set on the fuel gas supply path that gas uses, temporarily store fuel gas container,

On this container, form, make fuel gas from above-mentioned fuel gas supply path flow into the gas access used in the container and

Be formed on the described container with being independent of described gas access, make fuel gas flow out to the gas outlet that the fuel gas supply path is used from container.

The gas that the fuel that at every moment provides by the fuel gas supply path is used temporarily is stored in the container, carries out the time difference therein and mixes.Therefore, even this fuel gas as fuel gas, under the situation of its heating value change, also can mix by means of the time difference and reduce its heating value amplitude of fluctuation, and relax heating value change speed.Consequently, the heating value of fuel gas change utilizes diluent gas to adjust to become easily in the permission mobility scale of gas characteristic of fuel-burning equipment and effectively.And according to the average heating value of this fuel gas, may achieve does not need the state that dilutes yet.Also have, it is that the gas that will flow into later on the time continuously in the container is mixed with the gas that flows into and be trapped in wherein that the described so-called time difference mixes.

Also have, the above-mentioned gas inlet is gone up the upstream side that is not limited to the fuel gas supply path that connects, the downstream side that is not limited to the fuel gas supply path that connects on the gas outlet.Also can adopt for example shown in Figure 26, the bypass path is set on the fuel gas supply path, on this bypass path, be provided with under the situation of container, the downstream side of bypass path is connected with the gas access of container, upstream side is connected in gas outlet, and the structure of the means in the container that fuel gas is sent to is set on the bypass path of downstream side.

But the structure to said vesse is unqualified.For example also can be the container of the solid shape of the constancy of volume, can be again the container of the internal capacity change form used as the device (gas storage holder) of the equilibrium of supply and demand that monitors gas in existing gas-turbine plant etc.The container of so-called internal capacity change form be have can be according to the container of the lid member that presses down the airtight installation of moving in the container, utilize drive unit to make to cover member and move up and down on one's own initiative, can make counterbalance effect reach the container that can select vessel volume etc. of maximum with this.Use the device that these containers can form the effect that can bring into play the heating value change that suppresses fuel gas.

Preferably described gas access be formed on from substantially horizontal upward or the direction that tilts of below make fuel gas flow into structure in the container.Because can more effectively carry out the time difference mixes.

Be included in the tipping tube member that forms continuously on the fuel gas supply path that is communicated with described gas access for the gas stream Inbound being tilted, can adopting, this tipping tube member forms from substantially horizontal upward or the structure of below inclination.

Be included in the fuel gas supply path nearby of described gas access and in the container both one of the abatvent plate that sets, this abatvent plate is made of the fixing louver board of a slice at least in angle of inclination, and the gas stream Inbound is tilted.

As in the fuel gas supply path nearby of gas access or the louvered method of said fixing is set in the container, also can set case (housing) as a part that is connected in the fuel gas supply path on the gas access for example, install in that this case is inner.Described abatvent plate can be installed near the gas access at for example internal tank.

Be included in the gas inflow device that is provided with on the described gas access, the heat release in gas region variation suppressing that this gas inflow device forms the structure that can change the inflow angle in the fuel gas inflow container is desirable.

Described gas inflow device have in the fuel gas supply path nearby of described gas access and in the container both one of the variable louver board that sets,

This variable louver board is by can joltily installing, and can change that the louver board of a slice at least at its angle of inclination constitutes from the outside.

As in the fuel gas supply path nearby of described gas access or above-mentioned variable louvered method is set in the container, can use and the identical method of the louvered setting method of for example said fixing.

It is a plurality of that above-mentioned gas is gone into interruption-forming, and formation can select to switch the heat release in gas region variation suppressing that makes fuel gas flow into the structure of the gas access in the container from described gas access be desirable.Because, can promote the time difference of the gas in the container to mix for example by periodically switching the gas access that gas is flowed into.

For such heat release in gas region variation suppressing, gas outlet forms a plurality of, and formation can synchronously select to switch the structure that makes the gas outlet that fuel gas flows out outside container with the switching of described gas access.

Can make such heat release in gas region variation suppressing form described a plurality of gas accesses, the inflow direction of the fuel gas that in container, flows into mutually different structure.

Preferably the heat release in gas region variation suppressing forms a plurality of described gas accesses, comprise the flow adjuster that is provided with on the fuel gas supply path that is communicated with each gas access, formation can change the structure of the gas flow that flows through each fuel gas supply path.Because can promote the gas in the container to mix by the gas flow that for example periodically switches by each gas access.Also have, above-mentioned flow adjuster can adopt flow rate regulating valve.

The heat release in gas region variation suppressing preferably comprises and is connected with described container, makes inactive gas flow into the inactive gas supply passage of using in the container.Because carrying out fuel gas in container mixed with the time difference of inactive gas.

Preferably the heat release in gas region variation suppressing comprises the inactive gas supply passage that internally is connected that inserts the fuel gas supply path that is communicated with described gas access, and the outlet end of this inactive gas supply passage is positioned at upstream, described gas access.Because can promote mixing of fuel gas and inactive gas.

Preferably for the heat release in gas region variation suppressing, described inactive gas is the product that the nitrogen of discarding of at least a factory discharge in recovery system oxygen factory and the system nitrogen factory obtains.Because raising of inactive gas is easy and cheap.Also have, system oxygen factory and system nitrogen factory can use the factory that for example is provided with in technologies such as blast furnace process, direct iron reduction method.

Also possess a plurality of the 1st heat release in gas region measuring devices of on described container, keeping at a distance mutually and being provided with, can form the structure of the heat release in gas region distribution that can utilize in the 1st heat release in gas region measuring device measuring vessel.

Such heat release in gas region variation suppressing, preferably comprise measured value according to the 1st heat release in gas region measuring device, detect the distribution of the heat release in gas region value in the container, according to the distribution of this heat release in gas region value, control makes gas flow into the control gear that the gas stream Inbound in the container changes.Because can realize good gas in container mixes.

Preferably the heat release in gas region variation suppressing comprises: with fuel gas supply path that described gas access is communicated with on be provided with, measure inlet gas measurement of calorific value device that the heat release in gas region value of inlet side uses and on the fuel gas supply path that is communicated with gas outlet, be provided with, measure the exit gas measurement of calorific value device that the heat release in gas region value of oral-lateral is used.

Preferably such heat release in gas region variation suppressing, comprise measured value according to inlet gas measurement of calorific value device and exit gas measurement of calorific value device, the heating value change of heating value change and the discharge gas that is discharged from the container that flows into the inflow gas of container is contrasted, according to this comparing result, control makes gas flow into the control gear that the gas stream Inbound in the container changes.

Ceiling at described container forms under the situation of the structure that can move up and down, and preferably possesses direction that moves up and down and distance according to this ceiling, and control makes gas flow into the control gear that the gas stream Inbound in the container changes.Because can select to obtain the gas stream Inbound that best gas mixes according to the height of ceiling.Reduction, the container that so-called ceiling moves up and down, be meant as mentioned above have can be corresponding to the container of the lid member (formation ceiling) that presses down the gas tight seal of moving in the container, can utilize drive unit initiatively to make to cover that member moves up and down so that counterbalance effect reaches the container that can select vessel volume of maximum etc.

Preferably described gas outlet is formed on the position of the central shaft elongation line that departs from the gas access.Also have, the elongation line of so-called gas access central shaft is meant the elongation line etc. of the central shaft of for example described tipping tube member.

The stirring apparatus of blender gas body and function preferably is set at described internal tank.

Fuel gas supply equipment of the present invention,

Possess and fuel gas offered fuel-burning equipment acts as a fuel fuel gas supply path that gas uses and the heat release in gas region restraining device of the inhibition usefulness of the heating value change of the fuel gas that provides by this lower calorific value gas supply passage,

This heat release in gas region restraining device is made of aforesaid each heat release in gas region variation suppressing.

Preferably described fuel gas supply equipment also comprises

In the described heat release in gas region restraining device

Be connected in the gas outlet of container and the exit passageway between the fuel gas supply path,

Be connected in the gas access of container and fuel gas supply path, the tie point upstream side of described exit passageway and the access between the either party in the tie point downstream side and

Be equipped on described access, to the gas force feed device of container force feed fuel gas.

And preferably described fuel gas supply equipment also comprises

In the described heat release in gas region restraining device

Be connected in the gas access of container and fuel gas supply path, the tie point upstream side of described exit passageway and this tie point downstream side between the two access and

Be equipped on each access, to the gas force feed device of container force feed fuel gas.

And preferably described fuel gas supply equipment also comprises

In the described heat release in gas region restraining device

Be connected in the gas access of container and fuel gas supply path, the access between the tie point upstream side of described exit passageway,

Be connected in the fuel gas supply path, return path between the tie point downstream side of described exit passageway and this tie point upstream side and

Be equipped on described access and return path respectively, to the gas force feed device of container and upstream side fuel gas supply path force feed fuel gas.

And preferably described fuel gas supply equipment also comprises

In the described heat release in gas region restraining device,

The fuel gas supply path that connects the downstream side on the gas outlet of container,

The fuel gas supply path that connects upstream side on one gas access of container,

The return path that is connected between another gas access of container and the downstream side fuel gas supply path and

Be arranged on this return path, to the gas force feed device of container force feed fuel gas.

And preferably fuel gas supply equipment also comprises

In the described heat release in gas region restraining device,

The return path that is connected between the fuel gas supply path of container upstream side and the fuel gas supply path in container downstream side and

Be arranged on this return path, send the gas force feed device of fuel gas from the downstream side side pressure upstream of fuel gas supply path.

Gas-turbine plant of the present invention,

Possess above-mentioned fuel-burning equipment and fuel gas offered this fuel-burning equipment fuel gas supply equipment that gas uses that acts as a fuel,

Described fuel-burning equipment is a gas turbine,

Described fuel gas supply equipment is made of aforesaid each fuel gas supply equipment.

Boiler equipment of the present invention possesses described fuel-burning equipment and fuel gas is offered this fuel-burning equipment fuel gas supply equipment that gas uses that acts as a fuel,

Described fuel-burning equipment is the boiler that makes gaseous combustion in burner,

Described fuel gas supply equipment is made of aforesaid each described fuel gas supply equipment.

If employing the present invention, then heating value that the bi-product gas of technology is such can change lower calorific value gas offer fuel-burning equipment such as gas turbine and act as a fuel under the situation of gas, mix the heating value that (mitigations) this lower calorific value gas that provides can be provided by means of the time difference and change.That is to say, certainly reduce the amplitude that changes, can eliminate the change in short period and middle cycle as low-pass filter, only allow macrocyclic change stay, it is good and carry out easily therefore to utilize diluent gas to carry out dilution effect.And sometimes do not need to utilize diluent gas to dilute.

Description of drawings

Fig. 1 is the expression example that comprises fuel gas supply equipment of the present invention, is the piping diagram of general situation of the gas turbine power generating plant of lower calorific value supply arrangement.

Fig. 2 makes its buffer container by Fig. 1, with the plotted curve of an example of the state of the heating value change that relaxes lower calorific value gas.

Fig. 3 makes it pass through buffer container, with the plotted curve of another example of the state of the heating value change that relaxes lower calorific value gas.

Fig. 4 makes it pass through buffer container, with the plotted curve of the another example of the state of the heating value change that relaxes lower calorific value gas.

Fig. 5 is the piping diagram of another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Fig. 6 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Fig. 7 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Fig. 8 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Fig. 9 is the stereogram of an example of the gas flow path device that uses in the buffer container of Fig. 8.

Figure 10 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 11 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 12 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 13 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 14 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 15 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 16 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 17 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 18 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 19 is the cut-away section front view of the another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 20 is the plotted curve of an example of the analog result of mixing the time difference of the gas of expression in the buffer container.

Figure 21 is the plotted curve of another example of the analog result of mixing the time difference of the gas of expression in the buffer container.

Figure 22 is the piping diagram of another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 23 is the piping diagram of another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 24 makes its buffer container that passes through Figure 22 or Figure 23, with the plotted curve of an example of the state of the heating value change that relaxes lower calorific value gas.

Figure 25 is the piping diagram of another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 26 is the piping diagram of another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 27 is the piping diagram of another example of the expression buffer container that can be provided with in the gas turbine power generating plant of Fig. 1.

Figure 28 is expression another example of the present invention, promptly comprises the piping diagram of general situation of the boiler equipment of lower calorific value gas feeding apparatus.

Symbol description

1 lower calorific value gas feeding apparatus

2 gas turbines

3 lower calorific value gas supplying tubing

4 diluent gas supplying tubing

5 control gear

6 mixers

7 dust collect plants

8 inlet heating value meters

9 outlet heating value meters

10 buffer containers

11 flowmeters

12 heating value meters

13 mixed gas supplying tubing

14 flowmeters

15 heating value meters

16 fuel gas compressors

17 fuel distribution tubes

18 flowmeters

19 burners

20 flow rate regulating valves

21 filters

22 generators

23 buffer containers

24 lid members

25 drive units

26 cables

27 pulleys

28 stirring apparatuss

29 flowmeters

31 buffer containers

32 gas flow balance monitoring devices

33a covers member (upper container)

The 33b bottom container

34 counterweights

35 tipping tube members

36 gas inflow devices

37 cases

38 variable louver boards

39 rotatingshafts

40 connector elements

41 stop valves

42 inactive gas supplying tubing

43 connecting tube (outlet pipe arrangement)

44 inlet pipe arrangements

45 fans

46 gas flow balance monitoring devices

47 containers

48 pressure-detecting devices

49 return pipe arrangement

51 lower calorific value gas feeding apparatus

52 boilers

53 lower calorific value gas supplying tubing

54 flowmeters

S directly reduces system iron equipment

Embodiment

Example 1

Enforcement state to heat release in gas region variation suppressing of the present invention, fuel gas supply equipment and gas-turbine plant describes with reference to the accompanying drawings.

Fig. 1 be expression to the gas turbine as fuel-burning equipment provide the fuel gas supply equipment of the present invention that lower calorific value gas acts as a fuel gas an example, be the piping diagram of the general situation of lower calorific value gas feeding apparatus 1 and the gas-turbine plant that comprises this gas feeding apparatus 1 low in calories.Gas-turbine plant is represented with gas turbine power generating plant.As mentioned above, lower calorific value gas is meant that its heating value is greatly about 12MJ/Nm ³Following gas, characteristics such as its heating value tend to change.

As the lower calorific value gas feeding apparatus 1 of this fuel gas supply equipment, possess the bi-product gas (hereinafter referred to as lower calorific value gas) that direct reduction system iron equipment S is taken place act as a fuel the fuel gas supply path that offers gas turbine 2, be lower calorific value gas supplying tubing 3 and provide the diluent gas supplying tubing 4 of the gas of dilution usefulness to lower calorific value gas supplying tubing 3 in order to dilute this lower calorific value gas.This diluent gas is offered lower calorific value gas, be for the heating value change that prevents lower calorific value gas and surpass the intrinsic permission heating value scope of gas turbine.Flow rate regulating valve 14 and the flowmeter 18 of adjusting diluting gas flow are set on diluent gas supplying tubing 4, utilize mixer 6 to be connected on the lower calorific value gas feeding apparatus 1.As described dilution gas, adopt the exhaust of discharges such as inactive gas, air, steam, fuel-burning equipment etc.Inactive gas can adopt nitrogen (N ₂), but inactive gas also is not limited to N certainly ₂, also can adopt CO ₂Or He etc.The downstream part of mixer below 6 of lower calorific value gas supplying tubing 3, owing to be by this place lower calorific value gas to be delivered to gas turbine 2 with diluent gas with the state that mixes, therefore the pipe arrangement with this scope is called mixed gas supplying tubing 13.On this lower calorific value gas feeding apparatus 1, set the control gear 5 of its action being controlled usefulness.

In the upstream portion of mixer more than 6 of above-mentioned lower calorific value gas supplying tubing 3, the lower calorific value gas that direct reduction system iron equipment S is sent here is set carries out the dust collect plant 7 that dedusting uses and once store the buffer container (being designated hereinafter simply as container) 10 that lower calorific value gas is used.On buffer container 10, form to connect the inlet 10a of lower calorific value gas supplying tubing 3 of upstream side and the outlet 10b that is independent of the lower calorific value gas supplying tubing 3 in the connection downstream side that inlet 10a forms.This buffer container 10 and following buffer container 31 (with reference to Fig. 6 etc.), comprise following tipping tube member 35 (with reference to Fig. 6 etc.), gas flow path device 36 selectively, as the inactive gas supplying tubing 42 of inactive gas supply passage, work as the heat release in gas region variation suppressing.

Buffer container 10 has bigger capacity, carries out the time difference mixing in these buffer container 10 inside while at every moment heating value is changed the lower calorific value gas that flows into.That is to say that the lower calorific value gas that flows into buffer container 10 simultaneously forms relatively early the part that flows out from outlet 10b to the distribution of being detained than the part of later time buffer container 10.On the other hand, 10a flows into new gas continuously from inlet, and therefore the gas that flows in the past constantly mixes with the new gas that flows into.Such mixing is called the time difference mixing here.

The heating

value detection device

8,9 that the heating value that detection lower calorific value gas is set in the upstream side and the downstream side of buffer container 10 is used is provided with the flowmeter 11 that the measurement flow is used in the downstream side of buffer container 10.In Fig. 1, this flowmeter 11 is arranged at the buffer container 10 of lower calorific value gas supplying tubing 3 and the part between the mixer 6, but is not limited to this position.For example also can be arranged on the mixed gas supplying tubing 13 in mixer 6 downstreams, can also be arranged on the fuel distribution tube 17 that is connected with the burner 19 of following gas turbine 2.The heating

value detection device

8,9 on lower calorific value gas supplying tubing 3, a plurality of heating value detection devices 12 are installed directly more in addition on buffer container 10 also.The effect of these detection devices will be narrated below.

Here, heating

value detection device

8,9,12 adopt the heating value of direct measurement gas so-called heating value meter (being calorimeter), measure the device etc. of (concentration) of the containing ratio of combustible component.Under the situation of paying attention to detection speed, at the current combustible gas detector that preferably adopts.And the kind of the combustible component that can mainly comprise according to the lower calorific value gas that uses or the combustible component (for example carbon monoxide in the bi-product gas of directly reduction system iron processes) of main concentration change takes place, adopt the concentration detector of the concentration that detects this composition.In this manual, adopt whole these heating value detection devices of address representative of " heating value meter ".

Heating value meter 15 is set on mixed gas supplying tubing 13.Whether this is for the heating value meter 9 of the outlet side that monitors container 10 and flowmeter 11, monitors the heating value meter 15 of mixed gas supplying tubing 13 simultaneously, suitable with the final heating value of judging above-mentioned mixed gas.And adopt air or contain from the exhaust of fuel-burning equipment etc. under the situation of gas of oxygen at diluent gas, in order to control the oxygen concentration of mixed gas, oxymeter (not shown) is set on mixed gas supplying tubing 13.

The fuel gas compressors 16 of gas turbine 2 is set in the downstream side of heating value meter 15.Be connected to from fuel gas compressors 16 on the fuel distribution tube 17 on the burner 19 of gas turbine 2, be provided for adjusting the flow rate regulating valve 20 of gas turbine output.Symbol 21 expressions provide the filter that is provided with on the pipe arrangement of air to burner 19.On gas turbine 2, connect generator 22.Again (not shown) such as heat extraction recovery boiler power generating equipments that utilizes its exhaust to generate electricity can be set on gas turbine 2.

Action effect to the buffer container among Fig. 1 10 describes below.As previously mentioned, this buffer container 10 has inlet 10a and the 10b that connects lower calorific value gas supplying tubing 3 respectively.Therefore, the lower calorific value gas of sending here all flows into this buffer container 10.The volume of this buffer container is big, for example for the lower calorific value supplying tubing 3 about diameter 2～3m, volume is set usually is approximately 20000～200000m ³Container.The heating value change at every moment takes place the lower calorific value gas of sending here carries out the time difference mixing in buffer container.Consequently, reduce from the heating value amplitude of fluctuation of the outlet 10b lower calorific value gas of going out of buffering container 10, change speed descends quickly quickly.That is to say that the heating value change is suppressed (relaxing greatly).Like this, in case heating value change obtains relaxing in advance, then utilize the dilution of air etc. to be very easy to heating value risen and suppress in the downstream side.Below with reference to Fig. 2～Fig. 6 above-mentioned phenomenon is described.

Fig. 2 is that the volume of the buffer container 10 among Fig. 1 adopts 200000m ³The time, the lower calorific value gas of heating value change is with flow 500000Nm ³The analog result figure of inhibition (mitigation) state of the heating value change under the situation that/hr supplies with.Transverse axis express time (branch), the longitudinal axis represent lower calorific value gas heating value, be heat release in gas region value (kcal/Nm ³).Again, the heating value of the lower calorific value gas that the curve representation shown in the dotted line is sent here to buffer container 10 among figure change (initial change).This is the sample of actual measurement.Curve representation shown in the solid line carries out the heating value change (suppressing the back change) that the time difference mixes the lower calorific value gas of going out from buffering container 10 back fully.As shown in the figure, enter the heating value of buffer container 10 lower calorific value gas before at about 1530kcal/Nm ³To about 2360kcal/Nm ³Between the change.That is to say to have mean value (1495kcal/Nm ³) the amplitude of fluctuation of pact ± 21%.According to theoretical calculation result, be 1780kcal/Nm from the heating value change of the buffering container 10 lower calorific value gas of going out ³To 1960kcal/Nm ³, amplitude of fluctuation is suppressed at mean value (1870kcal/Nm ³) pact ± 5% in.As shown in the figure,, removed the change in short period and middle cycle, stayed macrocyclic change for variable cycle.Volume with respect to the supply flow buffer container of lower calorific value gas is done greatly more, and then this effect is tended to remarkable all the more.Initial variable cycle is short, under the little situation of amplitude of fluctuation, from the viewpoint of Economy, also is effective even do the volume of buffer container little.

Fig. 3 represents that the lower calorific value gas flow adopts 500000Nm ³/ hr is constant, and the volume that makes buffer container 10 is half 100000m of above-mentioned volume ³The time heating value change attenuation state.Heating value change in this case also utilizes adequate time difference mixing in the buffer container 10, is suppressed at 1700kcal/Nm ³To 2040kcal/Nm ³Scope in, amplitude of fluctuation is mean value (1970kcal/Nm ³) pact ± 9%.

Fig. 4 represents that lower calorific value gas is with flow 200000Nm ³In the equipment of/hr supply, the volume of buffer container 10 adopts 50000m ³The time the attenuation state of heating value change.Heating value change in this case also mixes by means of the adequate time difference in the buffer container 10, is suppressed in 1740kcal/Nm ³To 2010kcal/Nm ³Scope in, amplitude of fluctuation is mean value (1875kcal/Nm ³) pact ± 7.2%.

Not shown, lower calorific value gas with top described identical flow 200000Nm ³In the equipment that/hr supplies with, the volume of buffer container 10 adopt above-mentioned volume half be 25000m ³The time, amplitude of fluctuation is mean value (1875kcal/Nm ³) pact ± 12%.

As shown in Figure 5, also can be at lower calorific value gas with flow 200000Nm ³In the equipment that/hr provides, being set up in parallel two volumes is 25000m ³ Buffer container 10, when common operation, two are all used, only just only use a container when making regular check on maintenance and under the situation of unforseen event generation such as work is bad.

Like this, owing to possess the buffer container of the time difference mixing that can realize lower calorific value gas, can suppress the heating value change of lower calorific value gas to a great extent.Consequently, the control of carrying out mixing air or inactive gas in the downstream side becomes very easy.If for example the fuel gas heating value amplitude of fluctuation of gas turbine 2 is set under the situation of benchmark heating value (mean value) ± 10%, downstream at buffer container, for the mean value of the heating value that makes change consistent with the benchmark heating value of setting at gas turbine 2, as long as possess the buffer container of the volume that can be fit to its specification, provide a certain proportion of diluent gas to get final product.About the supply action of air, do not need to consider the heating value change of lower calorific value gas.

Under extreme case, the mean value of the heating value of the change by the lower calorific value gas behind the buffer container 10, roughly consistent with the benchmark heating value set on the gas turbine 2, therefore not only do not need mixed diluting gas, do not need to provide the equipment of diluent gas yet.

Fig. 6 represents another buffer container (the following container that also abbreviates as) 31.This buffer container 31 is that the container that will be used in existing gas-turbine plant as gas storage holder transform the container that is also used as the heating value variation suppressing as.Just on container 31, form inlet 31a and outlet 31b respectively, connect upstream side lower calorific value gas supplying tubing 3 and downstream side lower calorific value gas supplying tubing 3 respectively thereon.Gas storage holder is contained in the device 32 that the gas flow balance is monitored.So-called gas flow balance monitoring device 32, be for the amount that makes the lower calorific value gas that upstream side sends here and the needed spent gas of gas turbine measure balance and the device that uses.Under the situation of the load change of change that the supply gas amount takes place and gas turbine, between the delivery volume of gas and consumption figure, be necessary to average out.Delivery volume surpasses to be imagined when degree ground is superfluous in advance, takes it is released to and waits measure outside the system, when undersupply, or the load of gas turbine is reduced, or stops the part operation.

This gas flow balance monitoring device 32 possess the internal capacity changeable said vesse 31, utilize sealing component 33c etc. that the upper end open of container 31 is carried out hermetic seal, and make its lid member 33a that in container, can set up or down and be connected in the adjustment of for example covering on the member 33a with counterweight 34.Lid member 33a has ceiling, can be called the upper container that forms the combination of cover casket with bottom container 33b.Sealing component 33c is equipped on the gap between upper container 33a and the bottom container 33b.The internal tank that is equilibrated at of the living thrust that makes progress of cutting down output in the summation of the down pressure that produces by means of the weight and the barometric pressure of the deadweight of upper container 33a and above-mentioned counterweight 34 and the container 31 moves up and down.Therefore, lid member 33a can move up and down according to the variation of the balance of the delivery volume of lower calorific value gas and consumption.Take when moving up and down of this lid member 33a monitored, gas is discharged outside system or make measure such as gas turbine load reduction.This gas storage holder is also used as the buffer container 31 that lower calorific value gas carries out time difference mixing usefulness.

No matter have or not the lid member 33a that moves up and down,,

buffer container

10,31 just can have the effect that aforesaid lower calorific value gas carries out the time difference mixing as long as having the volume of regulation.

In Fig. 6～Figure 19, express the path direction that flows into the gas in the container is carried out well-designed so that lower calorific value gas can carry out the structure that the time difference mixes more fully in buffer container.That is to say that this is to be detained the time of growing as far as possible so that flow into the part of the lower calorific value gas of container in container, in container, mixing fully, be mixed into the well-designed of purpose with this time difference of realizing ideal.Put it briefly, form the structure that makes the gas flow path direction that flows in the container depart from the substantially horizontal inclination up or down.As prerequisite, must be that the internal capacity of container is abundantly bigger than the volume flowrate that flows into the gas in the container.Just as container 10 below with reference to for example Fig. 2～Fig. 5 explanation.In Fig. 6～Figure 19, identical member is marked with identical symbol, the explanation of each picture is omitted.

The container 31 of Fig. 6 is the buffer container 31 that utilizes gas storage holder as mentioned above, is illustration here, and the container 10 that does not have movable lid member 33a also can use this gas flow path direction is carried out well-designed structure.This situation is also identical for the container of following Fig. 7, Fig. 8, Figure 10, Figure 12～Figure 19, Figure 22, Figure 23.Nearby form inlet 31a and outlet 31b in the lower end of the peripheral wall of container 31, be communicated with the lower calorific value gas supplying tubing 3 in upstream side and downstream side thereon.The configuration of lower calorific value gas supplying tubing 3 approximate horizontal, but connect on the upstream side lower calorific value gas supplying tubing 3 of joint access 31a and its tipping tube member 35 that tilts upward continuously.By forming such structure, lower calorific value gas blows in container obliquely upward, most can be immediately the flowing out of air-flow from outlet 31b, and touring in container.Consequently, lower calorific value gas can be detained in container for a long time, can access abundant mixing.The elongation line of the inflow direction of the gas that the position deviation of outlet 31b flows in container also can improve the effect of time difference mixing.That is to say that it is desirable forming outlet 31b on the position of the central shaft elongation line that departs from tipping tube member 35 or following gas flow path device 36.To sum up, preferably on the position of elongation line of the central shaft that departs from inlet 10a (31a), form outlet 31b.This situation also is fit to for other containers 10 (30) of following explanation.

As shown in the figure,, stirring apparatuss 28 such as electric fan can be set in container also for the gas in the container 31 is stirred again.This is in order to promote the gas in the container to mix, more effectively to realize the time difference mixing with this.As the form that is provided with of stirring apparatus 28, preferably with can make gas from outlet 31b nearby to the posture that the internal direction of container flows be arranged at outlet 31b near.Want to be pushed back in the container, make gas can prolong the time of in container, being detained, can make gas realize more effective time difference mixing with this from outlet 31b effluent air.Again, preferably adopt when for example outlet is formed at the container bottom, gas is flowed upward, when outlet is formed at container top, the configuration that gas is flowed upward.This stirring apparatus 28 is not limited to the container 31 of Fig. 6, for the

container

10,23,31,47 shown on other figure with can bring into play other containers that heating value suppresses effect and also can be provided with.Also have,, preferably be arranged at external container as the rotating driving device motor 28a of stirring apparatus 28 etc.

Again, the mechanism as the gas to internal tank stirs usefulness also can connect the pipe arrangement (not shown) that the gas circulation in the container is used on container.That is to say, on container wall, form the entrance and exit that gas circulation is used, on this gateway, connect the inhibition pipe arrangement of circulation usefulness.And with inside of pipe arrangement the electric fan identical with above-mentioned stirring apparatus 28 is set in this circulation.If take such measure, utilize the action of this electric fan the gas in the container can be used the pipe arrangement sucking-off from circulation, it is flowed in the container, thus can form the circulation of gas, thus be created in the effect of carrying out gas agitation in the container.

Container 23 shown in Figure 7 is the buffer containers 23 of internal capacity changeable that utilize the gas storage holder of other kinds.This gas storage holder utilizes drive unit 25 by chain or hawser 26 the lid member 24 that is set to can airtight feud move up and down in container to be moved up and down, and the equilibrium of supply and demand effect of the gas in the time of can determining to make operation reaches maximum vessel volume.As shown in the figure, cover member 24 miniaturizations, lightweight, also it can be used in the container of big volume, can will the drive system of its usefulness that moves up and down be simplified by making.Such gas storage holder also forms lower calorific value gas access 23a and outlet 23b respectively.Connect upstream side lower calorific value gas supplying tubing 3 on

inlet

23a, 23b connects downstream side lower calorific value gas supplying tubing 3 in outlet, can be used as like this to realize that heating value changes the buffer container that suppresses effect and uses.Also connect on the lower calorific value gas supplying tubing 3 of the upstream side that the 23a that enters the mouth upward connects and its continuous tipping tube member 35 of inclination upward.Symbol 27 is pulleys of supporting hawser 26.

But the lower calorific value gas supplying tubing 3 of upstream side is disposed at the below, bottom of container 23.The inlet 23a of container 23 is opened near the periphery of container bottom, and tipping tube member 35 is connected on the inlet 23a obliquely from container bottom lower direction top.By means of such structure, also can realize mixing with the 31 same effective time differences of container of Fig. 6.Because inlet 23a is opened on container bottom,, can on to greatest extent, utilize the internal capacity of container 23 so the allowed band of the variation in altitude of above-mentioned lid member 24 reaches near the container bottom again.

Set the tipping tube member 35 that tilts upward on the

container

31,23 described above (Fig. 6 and Fig. 7), but be not limited to such structure.For example under the situation of the container 10 that does not have the solid shape that covers member, also can nearby form entrance and exit, connect lower calorific value gas supplying tubing 3 respectively thereon in the upper end of container peripheral wall.In this case, on the front end of upstream side lower calorific value gas supplying tubing 3, connect continuously the tipping tube member of inclination downwards.That is to say that the height that is connected the link position on the container according to upstream side lower calorific value gas supplying tubing 3 selects the true dip direction of tipping tube member to get final product.

On container shown in Figure 8 31, nearby form inlet 31a and outlet 31b in the lower end of its peripheral wall.The lower calorific value gas supplying tubing 3 in upstream side and downstream side is configured on the position of approximate horizontal simultaneously.Set on the above-mentioned inlet 31a and change the gas inflow device 36 that the path direction in the gas inflow container is used, the lower calorific value gas supplying tubing 3 of connection upstream side on this gas inflow device 36.Container 31 had its gas inside of the inflow of making originally and produced mobile so that its mixed uniformly function, but the state by means of can change air-flow to gas flow path device 36 and the control gear 5 controlled of action thereof can further improve mix uniformly effect.

If simultaneously with reference to Fig. 9, obvious this gas inflow device 36 variable louver board 38 of multi-disc of having the case 37 that forms as the part of upstream side lower calorific value gas supplying tubing in the outside of container entrance 31a and keeping up and down in these case 37 inside accommodating at interval.Each variable louver board 38 approximate horizontal configuration, its rotatingshaft 39 is outstanding to the outside of case 37.Utilize known means such as motor, hydraulic motor, cylinder, oil hydraulic cylinder that the outstanding part of this running shaft 39 is rotated, louver board 38 is shaken on above-below direction.In case louver board 38 is shaken, inflow direction that just can change gas corresponding on above-below direction with it.Gas stream and Fig. 6 and the tipping tube member 35 the same air-flows that make shown in Figure 7 are tilted upward.The louvered number that is provided with is unqualified, can be that a slice also can be a multi-disc.The sheet number determines the effect of inflow direction to be improved at most, increases the tendency that flows into impedance but have.

And for example shown in Figure 9, on the outstanding rotatingshaft 39 in the outside of case 37, true dip direction indicator 39a is set, the true dip direction of louver board 38 can be shown from the outside of gas inflow device 36 and then the inflow direction of gas can be shown.And for the true dip direction of this louver board 38, the signal that also can detect and this testing signal be sent to control gear 5 according to not shown detector shows on not shown remote display unit.Can on case 37, form the perspective window again, so that can confirm the true dip direction of louver board 38 from the outside.

Also have, under the situation of the container 31 that possesses movable up and down lid member 33a as shown in the figure, its ceiling moves up and down, and the position signal of this ceiling is transfused to control gear 5, can select only gas flow path direction according to this position signal.For example, rise as operculum member 33a, gas flow direction is further tilted upward, institute makes its elevation angle of departing from substantially horizontal become big so that louver board 38 shakes upward.Descend as operculum member 33a, the current direction of air flow path direction ratio tilted downwards, its elevation angle of departing from substantially horizontal diminishes so that louver board 38 shakes.

On the container 31 (comprise and cover member 33a) of Fig. 8, keep installing at interval above-mentioned a plurality of heating value meter 12 in suitable place again.Can know the time difference mixability of the gas in the container 31 according to the measured value of this heating value meter 12.Poor (distribution of so-called heating value) of the heating value at each position in the container 31 is more little, then can be judged as the time difference to mix effective more.The angle of inclination that changes louver board 38 according to above-mentioned control gear 5 utilizes this heating value meter 12 continuous measurements heating value on one side on one side.Do like this to mix and understand only louvered angle of inclination according to the time difference.Can know other only angles of inclination of each condition such as height and position again for the lid member 33a of container 31.If in advance these data are stored in control gear 5, then can when operation, utilize this control gear 5 louver board 38 to be controlled in only angle according to the distribution of the heating value in the container.

On the lower calorific value supplying tubing 3 in upstream side that connects on the container 31 of Fig. 8 and downstream side, difference inlet porting heating value meter 8 and outlet heating value meter 9.Therefore each

heating value meter

8,9 METHOD FOR CONTINUOUS DETERMINATION heat release in gas region value can detect the heating value change of the lower calorific value gas supplying tubing 3 in upstream side and downstream side.Therefore the signal of control gear 5 input expression upstream sides and downstream side heat release in gas region change separately can compare these signals, suppresses the size of effect with the heating value change that detects container 31.Therefore by means of this control gear 5, calculate the setting value of heating value change inhibition level and the deviation of checkout value, the angle of inclination of louver board 38 is controlled, to fill up this deviation (so that the time difference mixed effect is a maximum uniformly).

For example, utilize above-mentioned control gear 5 that the angle of inclination of louver board 38 is changed, utilize this

heating value meter

8,9 continuous measurements heating value simultaneously.So, just can mix the angle of inclination of understanding only louver board 38 according to the time difference.Can know that again other each conditions such as height and position to the lid member 33a of said vesse 31 also are only angles of inclination.If store these data in advance, then can be controlled at only angle at the louver board 38 that operation the time utilize this control gear 5 can reduce the deviation of the setting value of heating value change inhibition level and checkout value at control gear 5.

The above-mentioned concrete flow circuit device 36 of the container 31 of Fig. 8 is contained in outer case 37 inside that are provided with of container with variable louver board 38, but is not limited to such structure.For example also case can be set, and variable louver board 38 be set and make it shake driving on the position in container from external container near inlet.

Periphery bottom Figure 10 is illustrated in nearby possesses the container 31 of the gas flow path device 36 of built-in aforesaid variable louver board 38.The lower calorific value gas supplying tubing 3 of upstream side is disposed on the position of bottom below of container 31, and the inlet 31a of container 31 is opened near the periphery on the container bottom.The bottom of this opening 31a is provided with gas flow path device 36.By means of this structure, also can be the same with the container 31 of Fig. 8, utilize the control of detection that

heating value meter

8,9,12 carries out and control gear 5 to realize that the effective time difference mixes.

The gas inflow device that is used to change the gas flow path direction is not limited to possess the said apparatus 36 of variable louver board 38, also can adopt any known suitable means that can change the gas flow path direction from the outside arbitrarily.And gas inflow device 36 is not limited to possess the container 31 of movable cover member 33a, also can go up and be provided with can not changing the machine made container 10 of volume (with reference to Fig. 1, Figure 11).

More than Shuo Ming gas inflow device 36 also can be used in the gas flow direction that flows into container and changes on the transverse direction.That is to say, whole gas inflow device 36 is installed on the

container

10,23,31 as centering on the structure of its central shaft 0～90 ° of scope rotation.So, just can utilize

heating value meter

8,9,11 as mentioned above, confirm that the heating value change in the container suppresses effect continuously, and make airflow direction also change to the best inflow direction of setting on the transverse direction simultaneously.

Container 31 shown in Figure 11 nearby forms inlet 10a and outlet 10b in the lower end of its perisporium, connects the lower calorific value gas supplying tubing 3 in downstream side on outlet 10b, and inserts the lower calorific value gas supplying tubing 3 of upstream side to internal tank from inlet 10a.At internal tank, on the front end of the lower calorific value gas supplying tubing 3 of upstream side, utilize 40 loading and unloading of connector element such as flange to connect the tipping tube member 35 that tilts upward freely.Certainly, also the lower calorific value gas supplying tubing 3 of upstream side can be connected in inlet 10a, connect tipping tube member 35 freely in the inboard loading and unloading of inlet 10a.This container 10 does not have movable lid member, and ceiling height is fixed, and therefore there is no need frequently to change the gas stream Inbound.Therefore can under the situations such as flow that change lower calorific value gas significantly, replace with the different tipping tube member 35 in angle of inclination.Make this tipping tube member 35 rotate (for example make screw hole phase mutual deviation one pitch of flange 40 or more than the pitch) again around the central shaft of lower calorific value gas supplying tubing 3, it is installed on the lower calorific value gas supplying tubing 3, about can being not limited to like this, and about inflow direction is changed.By making the different tipping tube member 35 in angle of inclination as mentioned above, the central shaft that centers on lower calorific value supplying tubing 3 is rotating to be installed, and can make inflow direction not change and only change at left and right directions at above-below direction.

Form 3 inlet 31a on the container 31 shown in Figure 12, on each inlet 31a, connect branched pipe (upstream side branched pipe) 3a of upstream side lower calorific value gas supplying tubing 3 by tipping tube member 35.Inlet 31a and upstream side branched pipe 3a are not limited to 3, so long as a plurality of getting final product.Above-mentioned a plurality of inlet 31a keeps being formed at interval on the peripheral wall (also can be the bottom) of container.Stop valve (also can be flow rate regulating valve) 41 is installed on upstream side branched pipe 3a, can be suitably selected these valves to open and close.By means of above-mentioned control gear 5, open or close above-mentioned three stop valves 41 in regular turn, periodicity or aperiodicity ground switch 3 upstream side branched pipe 3a, can change the gas stream implantation site that flows in the container like this.

Again, adopt flow rate regulating valve to replace this stop valve 41, with this can be periodically or aperiodicity make the gas flow difference of passing through among three upstream side branched pipe 3a.By such control, control gear 5 is with the state optimization of the air-flow in the container.This optimum state is a benchmark with the File of making according to many operating datas, can use for the only File of similar operation situation (heat release in gas region, gas flow, gas componant, interior holdup time of container etc.).Also have, also can above-mentioned tipping tube member 35 be installed on therebetween, but, can realize more effective time difference mixing by tipping tube member 35 is installed.

Also can make the angle of inclination difference of the pointing direction, particularly above-below direction of the central shaft of above-mentioned a plurality of tipping tube members 35 again.If do like this, can change corresponding to the conditions such as variation of the ceiling height of container and select suitable gas stream Inbound.

Also can set many downstream side branched pipes (not shown) together with many upstream side branched pipe 3a.Also stop valve or flow rate regulating valve can be installed on each downstream side branched pipe, formation can suitably be selected structure with its switching to these valves.If take such structure, then can utilize above-mentioned control gear 5, switch to periodicity or aperiodicity 3 upstream side branched pipe 3a with the change flow, or also switch to periodicity or aperiodicity the downstream side branched pipe simultaneously with the change flow.Therefore, compare, can utilize the time difference of gas to mix, realize better stream condition with above-mentioned the situation that upstream side branched pipe 3a is controlled.

On planimetric map Figure 12 of this container 31 a, upstream branch pipe 3a and downstream side lower calorific value gas supplying tubing 3 are connected on the relative position (keep for the central shaft of container 180 ° position), but are not limited to such structure.Also can be connected in and irrelative position on.For example also can be connected in two

pipe arrangement

3a, 3 forms on 90 °, 120 °, the 135 ° equal angular positions.Because gas can be detained the longer time in container.(it is also identical that Fig. 6～Fig. 8, Figure 10, Figure 11, Figure 13～Figure 19) we can say for other containers for this situation.

Container 31 shown in Figure 13 is containers that gas inflow device 36 (with reference to Fig. 9) same as described above is installed respectively on a plurality of inlet 31a of the container 31 of Figure 12.Here, the explanation of gas inflow device 36 is omitted, also can on this container 31, also set above-mentioned many downstream side branched pipes.If adopt such structure, the time difference mixed effect that the control that illustrates except reference Figure 12 obtains, also can utilize variable louver board 38 to carry out airflow direction control, therefore can utilize the time difference of gas to mix the better stream condition of realization.

Figure 14～Figure 19 represents that respectively the inactive gas that possesses lower calorific value gas being diluted usefulness drops into the container 31 of the mechanism in the container.On lower calorific value gas supplying tubing 3 shown in Figure 1, set the diluent gas supplying tubing 4 that the downstream side to this buffer container 10 provides diluent gass such as inactive gas to use.Its objective is, surpass at the average heating value that utilizes the lower calorific value gas after buffer container 10 (31) suppresses its heating value change as mentioned above under the situation of the intrinsic permission heating value scope of gas turbine, utilize diluent gas that the heating value is reduced.If drop into buffer container 10 (31) in advance but will make above-mentioned average heating value reduce needed diluent gas, the heating value control that then utilizes above-mentioned diluent gas supplying tubing 4 to carry out is simplified or does not just need, and is favourable therefore.For example calculate the average heating value of the lower calorific value gas of inlet side from the testing result of inlet heating value meter 8, surpass at this average heating value under the situation of scope of the intrinsic permission heating value of gas turbine, in container, drop into the diluent gas that makes the heating value drop to required quantity in the allowed band.Or when the average heating value of the lower calorific value gas of inlet side sharply rises, make itself and at this moment the outlet side needed about equally diluent gas of value that on average generates heat to the container input.

But, be not the relation of amount that only is conceived to the inactive gas of lower calorific value gas and input, preferably also seek to promote the mixing of two gases.Because such reason, on the container 31 of Figure 14～shown in Figure 19, be connected or replace this pipe arrangement 4 simultaneously with above-mentioned diluent gas supplying tubing 4 and connect suitable inactive gas feed mechanism.Like this, under the situation of the inactive gas beyond lower calorific value gas supplying tubing 3 provides lower calorific value gas from container 10 (23,31,47) or its upstream, outside the flowmeter 11 (with reference to Fig. 1) that is provided with in the downstream side of container 10, the flowmeter of only flow of lower calorific value gas being measured 29 is arranged on the lower calorific value gas supplying tubing 3 of feed point upstream of inactive gas (with reference to Figure 14～Figure 19).

On the inlet 31a of Figure 14 and container 31 shown in Figure 15, by being connected upstream side lower calorific value gas supplying tubing 3 with identical tipping tube member 35 shown in Figure 7 with Fig. 6.Detailed description for this point is omitted.But in these upstream side lower calorific value gas supplying tubing 3 inside, insert inactive gas supplying tubing 42 and connected, it is open to form its front end, makes inactive gas can sneak into structure in the lower calorific value air-flow.Thereby the scope of the insertion inactive gas supplying tubing 42 in the lower calorific value gas supplying tubing 3 forms double-sleeve structure.From the viewpoint of good mixing, the flow velocity of the inactive gas preferably flow velocity than lower calorific value gas is low.Utilize the structure of above explanation, inactive gas is flowed in the container with the flow direction identical with lower calorific value gas, can prevent that inactive gas forms uneven difference in lower calorific value gas.

Figure 16 and container 31 shown in Figure 17 are the tipping tube members 35 that replace Figure 14 and container 31 shown in Figure 15, set the container of gas flow path device 36 as shown in Figure 9.The structure of gas flow path device 36, the explanation of function are omitted.In this container 31, possesses the double-sleeve structure that lower calorific value gas supplying tubing 3 and inactive gas supplying tubing 42 form, even therefore utilize variable louver board 38 to change path direction, lower calorific value gas and inactive gas in the stream container also flow into from equidirectional.Utilize such structure, can prevent that inactive gas forms inhomogeneous difference in the interior lower calorific value gas of container.Above-mentioned dual pipe also can be made multiple pipes such as triple pipe as required.

Form approaching two

inlets

31a, 42a at container shown in Figure 180 31.On an inlet 31a, connect upstream side lower calorific value gas supplying tubing 3 by tipping tube member 35, on another inlet 42a, connect inactive gas supplying tubing 42 by tipping tube member 35.The angle of inclination that two tipping tube members 35 depart from level is roughly the same, makes to flow into the lower calorific value gas in the container and the path direction almost parallel of inactive gas.Lower calorific value gas supplying tubing 3 and the close up and down as shown in the figure configuration of inactive gas supplying tubing 42.But also can be near configuration on transverse direction.

Use the container of tipping tube member in the container for the above-described, be not defined in the tipping tube member especially.Also can use other suitable means that the gas stream Inbound is tilted regularly.The fixing louvered case in built-in angle of inclination for example also can be set on inlet 10a, the 31a of container, or the fixing louver board in angle of inclination nearby be set at the inlet of internal tank.

Container 31 shown in Figure 19 is the inlet 42a that use in the inactive gas supplying tubing, sets the tipping tube member 35 that as shown in Figure 9 gas inflow device 36 replaces container 31 shown in Figure 180.Omit for the structure of gas inflow device 36, the explanation of function.In this container 31, approaching up and down lower calorific value gas supplying tubing 3 and inactive gas supplying tubing 42 all possess gas inflow device 36, and therefore can make the inflow direction of two gases is roughly the same direction.But, under the different particular case of the inflow velocity of two gases inflow container, can change the inflow direction of two gases, therefore can variously control.By utilizing such structure, can prevent that in container inactive gas forms uneven distribution in the lower calorific value gas.

The more than inactive gas that drop in the container 10 (31) of the explanation oxyen manutactory that preferably uses blast furnace process and directly reduction system such as FINEX method or COREX method iron processes the to use discarded nitrogen of emitting and the discarded nitrogen that contains micro amount of oxygen of discharging with oxyen manutactory and the system nitrogen factory that establishes.Because a large amount of the recovery used discarded nitrogen, so running cost is extremely low.

Under FINEX method or COREX method etc. were directly reduced the situation of system iron processes, reducing agent used oxygen, and therefore the oxyen manutactory of a large amount of manufacturing oxygen must be set.In blast furnace process, also use oxygen, even therefore variantly on scale also still will use the oxyen manutactory.The oxyen manutactory is a separation of nitrogen from air, makes the factory of oxygen, but the later exhaust of oxygen separation is discharged in the atmosphere usually as discarded nitrogen.On the other hand, often system nitrogen factory is set and makes high-purity nitrogen with the oxyen manutactory, even but in this case, the nitrogen that also will contain trace oxygen as discarded nitrogen discharge in atmosphere.Discarded nitrogen like this, nitrogen content and have oxygen about 2～5% about 95～98 quality %, considers from the viewpoint of the Flammability limits of lower calorific value gas, and also be very safe diluent gas.Can certainly use the purity nitrogen that injects steel cylinder etc.

For the purpose of the dilution lower calorific value gas identical, the exhaust that air or fuel-burning equipment are produced also can be set offer the equipment of container to replace inactive gas to use with above-mentioned inactive gas supplying tubing 42.This supplying method can equally with inactive gas directly provide container, or the lower calorific value gas supplying tubing of container upstream is provided.But, because air and exhaust contain oxygen, the mixed proportion that therefore has not the flammability limit decision according to lower calorific value gas that lower calorific value gas is mixed.And be necessary to make it fully to mix with lower calorific value gas, the high part of oxygen concentration does not take place.For this reason, preferably mixer is set in the supplying tubing of air or exhaust and the linking department of container or lower calorific value gas supplying tubing.

In the container 31 that reference Figure 12, Figure 13 and Figure 19 describe, the inflow direction of the lower calorific value gas (and inactive gas) that flows into from many pipe arrangements be it seems in the plane and abreast upstream side lower calorific value gas supplying tubing 3, tipping tube member 35 and gas inflow device 36 directionally is connected on the container.But, be not limited to such structure.For example also can form the gas flow path direction it seems in the plane and flows to structure towards the direction of the central shaft of container.

In Figure 20 and 21, the analog result that the time difference of the gas in the buffer container 10 mixes is represented as the holdup time and the relation curve of accumulation gas flow.Among two figure all the holdup time (branch) with gas in the container be transverse axis, be the longitudinal axis with the ratio of the gas that is detained.The state that curve representation gas in Figure 20 group mixes fully.That is to say, be illustrated in gas and enter in the container simultaneously from inlet, with up to now container the state that quickly mixes of gas.These figure represent that the volume of container adopts 40000m ³, the flow of the gas of inflow adopts 5Nm ³Analog result under the condition of/hr.

This plotted curve means, the ratio in stipulated time that transverse axis is represented from the outlet effluent air is just with respect to the ratio of all gas volume of container.The gas volume of 1.0 numeric representation entire container of the longitudinal axis.For example (H1 represents with symbol) is about about 0.068 (about 6.8%) of the about 0.621=of 0.689-from exporting effluent air with respect to the ratio V1 of all gas of container in the 100 second time of the numerical value on the transverse axis 500 seconds～600 seconds in the presentation graphs (this expression flow into container after elapsed time promptly represent the holdup time).In other words, the gas that is detained between flowing in the container after back 500 seconds after 600 seconds is about 6.8% of all gas in the container.Flow into as can be known behind the container through 100 seconds less than (only after from 0 second by 100 seconds, represent with H2) gas be about 0.176-0=about 0.176, about 17.6% (the representing) that has total amount with V2, the gas of (the representing with H3) but of being detained between after 1000 seconds after 900 seconds behind the inflow container is about 0.029 for the about 0.834=of about 0.863-, only has 2.9% (representing with V3) of total amount.

The ideal that time difference mixes, no matter begin when flowing into through how long, the state that gas mixes with identical ratio, the lines of just representing on the plotted curve are that straight line is desirable.But this is a non-existent state in the reality.The state of the state that is mixed fully as shown in Figure 20 being regarded as best time difference mixing is appropriate.

Figure 21 represent for can with above-mentioned complete admixture contrast, the analog result of mixing under the same conditions from the time difference of container entrance inflow gas on the direction that forms three kinds of elevations angle.Represent with solid line for the state that mixes fully, the elevation angle of departing from substantially horizontal is that the situation that 60 ° direction flows into is represented with two-dot chain line, the elevation angle of departing from substantially horizontal is that the situation that 65 ° direction flows into is represented with some locking wires, the elevation angle of departing from substantially horizontal is that the situation that the direction of 90 ° (roughly vertical direction tops) flows into dots, form any situation that the elevation angle flows into, even also draw out close curve so that complete admixture is inconsistent.Just we can say, realized good time difference mixing.Consequently, to reference Fig. 2～Fig. 5 explanation like that, the heat release in gas region change is effectively suppressed.

Figure 22 represents with the lower calorific value gas supplying tubing 3 relative buffer containers that are set up in parallel, in other words, the buffer container that is provided with on the bypass pipe arrangement of setting up on the lower calorific value gas supplying tubing 3.This buffer container is that the gas storage holder that is provided with on the existing lower calorific value gas feeding apparatus is made small structure modify, and it is also used as the container of heat release in gas region variation suppressing.The gas storage holder that is provided with on the existing lower calorific value gas feeding apparatus utilizes a connecting tube to connect with respect to 3 of lower calorific value gas supplying tubing.This connecting tube the double as gateway.Gas storage holder be so long as can seek the equilibrium of supply and demand of the gas in the lower calorific value gas supplying tubing and get final product, so only is communicated with a connecting tube with lower calorific value gas supplying tubing and gets final product.

As shown in the figure, on container 31, connect above-mentioned connecting tube 43, except this connecting tube 43, connect the inlet pipe arrangement 44 that newly is communicated with lower calorific value gas supplying tubing 3.Inlet pipe arrangement 44 constitutes above-mentioned bypass pipe arrangement with connecting tube 43.This inlet pipe arrangement 44 utilizes and the joint of lower calorific value gas supplying tubing 3 and connecting tube 43 is connected in upstream side.On this inlet pipe arrangement 44, be provided as the electric fan 45 of lower calorific value gas being sent into the gas force feed device of container 31.Therefore the part of the lower calorific value gas that is provided is passed through inlet pipe arrangement 44 inflow containers 31, and in container 31, lower calorific value gas carries out the time difference to be mixed, and returns lower calorific value gas supplying tubing 3 by above-mentioned connecting tube 43 from container 31 with the gas of measuring.Therefore, in this case, also above-mentioned connecting tube 43 can be called the outlet pipe arrangement.

Connect on the inlet 31a of container of above-mentioned inlet pipe arrangement 44, connect aforesaid tipping tube member 35 or gas inflow device 36.Utilize this container 31, a part of utilizing lower calorific value gas supplying tubing 3 to offer the lower calorific value gas of gas turbine is suppressed its heating value change.

Figure 23 represents to utilize another gas flow balance monitoring device 46 as heating value change inhibition means.The more economical structure of these gas flow balance monitoring device 46 employings has inlet 47a and outlet 47b and utilizes connecting tube 43 respectively and the container 47 of the airtight construction that the pipe arrangement 44 that enters the mouth is communicated with lower calorific value gas supplying tubing 3.Pressure-detecting device 48 is set on the container 47, and the interior pressure of container 47 often obtains monitoring.In case control gear 5 detected pressures reach the instruction that the gas consumption increase that makes in the equipment is just sent in upper limit zone, obtain the equilibrium of supply and demand of gas.Other structures are identical with above-mentioned buffer container 10 (with reference to Fig. 1), can make full use of as heating value change inhibition means.

The container entrance 47a that connects above-mentioned inlet pipe arrangement 44 goes up and connects above-mentioned tipping tube member 35 or gas inflow device 36 (not shown).Utilize this container 47, a part of utilizing the lower calorific value gas that lower calorific value gas supplying tubing 3 provides to gas turbine is suppressed its heating value change.

Figure 24 is illustrated in the lower calorific value gas of heating value change with flow 500000Nm ³In the equipment that/hr provides, the volume of the container 31 (47) among Figure 22 or Figure 23 adopts 200000m ³, utilize above-mentioned electric fan 45 with 500000Nm ³200000Nm among the/hr ³The gas of/hr is sent into the plotted curve of the holddown of the heating value change under the situation of container 31 (47).Curve representation among the figure shown in the dotted line directly reduces the heating value change (initial change) of the lower calorific value gas that system iron equipment S sends here.This is above-mentioned actual measurement sample.Curve representation shown in the two-dot chain line leaves the analog result of container by the heating value change (transition change) of the lower calorific value gas of above-mentioned connecting tube 43.Connect the heating value change (suppress or change) of the gas that the part of lower calorific value gas supplying tubing 3 in the downstream side of pipe 43 point flows through on the curve representation lower calorific value gas supplying tubing 3 shown in the solid line.With top described identical, the heating value that enters container 31 (47) lower calorific value gas before has mean value (1945 kcal/Nm ³) the amplitude of fluctuation of pact ± 21%.But the heating value change of passing through the gas after connecting tube 43 collaborates with lower calorific value gas supplying tubing 3 from container 31 (47) is 1690kcal/Nm ³To 2100kcal/Nm ³, the amplitude of change is suppressed at mean value (1895kcal/Nm ³) pact ± below 11%.This numerical value is an example.

Like this, also can utilize existing device to suppress the heat release in gas region change with container 31 (47) that gas storage holder uses.And can utilize air easily lower calorific value gas to be diluted in the downstream side.Also have, in Figure 22 and Figure 23, the inlet pipe arrangement 44 of lower calorific value gas being sent into container 31 (47) is connected in the upstream side of the outlet pipe arrangement (connecting tube) 43 of lower calorific value gas supplying tubing 3, but is not particularly limited, and also can be connected in the downstream side of outlet pipe arrangement 43.Can all be provided with many by two

pipes

43,44 again.

Figure 25 also represents same relative lower calorific value gas supplying tubing 3 buffer containers 31 that dispose arranged side by side of container with Figure 22.As shown in the figure, between container 31 and the lower calorific value gas supplying tubing 3, connection possesses the above-mentioned connecting tube 43 of the inlet pipe arrangement 44 and the conduct outlet pipe arrangement of electric fan 45.That is to say that joint access pipe arrangement 44 on the inlet 31a of container 31 connects outlet pipe arrangement 43 on outlet 31b.But also form inlet 49a on this container 31, this inlet 49a goes up to connect and returns pipe arrangement 49.Return pipe arrangement 49 be connected in lower calorific value gas supplying tubing 3 with the outlet pipe arrangement 43 the joint downstream side.This returns and is provided with on the pipe arrangement 49 electric fan 45 of lower calorific value gas delivery to container 31.As shown in the figure, inlet pipe arrangement 44 is approaching mutually with the link position that returns pipe arrangement 49 and container 31 (

inlet

31a, 49a).

If adopt this structure, by inlet pipe arrangement 44 part of lower calorific value gas is sent to container 31 from the upstream side of lower calorific value gas supplying tubing 3, simultaneously from the downstream side of lower calorific value gas supplying tubing 3 by returning pipe arrangement 49 to its force feed part lower calorific value gas, carrying out the time difference flows out to connecting tube from outlet 31b after mixing.That is to say that therefore the part formation circulation of the lower calorific value gas that the heating value change is suppressed can mix through the long-time realization time difference in container.The length of returning pipe arrangement 49 is done to such an extent that holdup time of the gas that mixes of long more then time difference is long more, can realize that the better time difference mixes.Above-mentionedly return pipe arrangement 49 is connected in container 31 from the downstream side of lower calorific value gas supplying tubing 3 inlet 49a, but also can be connected at the joint upstream side of lower calorific value gas supplying tubing 3 from the downstream side with the pipe arrangement 44 that enters the mouth.

Figure 26 also represents the buffer container 31 that is set up in parallel with respect to lower calorific value gas supplying tubing 3.As shown in the figure, the above-mentioned connecting tube 43 of joint access pipe arrangement 44 and conduct outlet pipe arrangement between container 31 and lower calorific value gas supplying tubing 3.But inlet pipe arrangement 44 is connected in the downstream side of the joint of lower calorific value gas supplying tubing 3 and connecting tube 43.The electric fan 45 of lower calorific value gas being sent into container 31 is set on this inlet pipe arrangement 44.In other words, pipe arrangement between the buffer container 31 of Figure 26 and the lower calorific value gas supplying tubing 3 forms from buffer container shown in Figure 25 31 and removes inlet pipe arrangements 44, with pipe arrangement 49 be considered as the entering the mouth structure of pipe arrangement 44 of returning shown in Figure 25.

If adopt such structure, pipe arrangement 44 will be connected in lower calorific value gas supplying tubing 3 even will enter the mouth and the downstream side of connecting tube pipe arrangement 43 joint, also can utilize electric fan 4 that lower calorific value gas is sent in the container 31 by inlet pipe arrangement 44, carry out flowing out to connecting tube from outlet 31b after the time difference mixing.That is to say that the part of the lower calorific value gas that the heating value change is suppressed forms circulation, therefore realized effective time difference mixing.And the length of above-mentioned inlet pipe arrangement 44 is long more, can realize in container that then the time difference of longer time mixes.

Container 31 shown in Figure 27 has two kinds of inlets 31a, 49a.On an inlet 31a, connect upstream side lower calorific value gas supplying tubing 3, on outlet 31b, connect downstream side lower calorific value gas supplying tubing 3, and on another inlet 49a, with downstream side lower calorific value gas supplying tubing 3 between be connected and return pipe arrangement 49.Two

inlets

31a, 49a are formed on the approaching mutually position.Return to be provided with on the pipe arrangement 49 lower calorific value gas is sent into the electric fan 45 that container is used.

If adopt such structure, the part of the lower calorific value gas that then heating value is suppressed in container 31 is returned container 31 once again and is carried out the time difference mixing once again, therefore can realize more desirable time difference mixing.The length of returning pipe arrangement 49 is long more, then the holdup time of the gas of time difference mixing is long more, above-mentionedly return pipe arrangement 49 is connected to container 31 from the downstream side of lower calorific value gas supplying tubing 3 inlet 49a, but also can be connected to the upstream side of the container of lower calorific value gas supplying tubing 3 from the downstream side.

(Figure 25～Figure 27) goes up the upstream side lower calorific value gas supplying tubing 3 that connects and returns pipe arrangement 49, also can use tipping tube member 35 and gas inflow device 36 for above-mentioned buffer container 31.

Figure 28 represents boiler equipment.The lower calorific value gas feeding apparatus 51 that on this boiler equipment, sets boiler 52 and the lower calorific value gas that acts as a fuel is offered these boiler 52 usefulness.Above-mentioned boiler 52 is used it for generating at burner combustion generation steam, maybe the steam that takes place is used in other purposes, is the boiler equipment that is used to provide steam.

This lower calorific value gas feeding apparatus 51 is the equipment from the thing of the equipment class of the lower calorific value gas supplying tubing 3 in the downstream side of lower calorific value gas feeding apparatus shown in Figure 11

removal buffer container

10 and 13 settings of mixed gas supplying tubing.That is to say, illustrated lower calorific value gas feeding apparatus 51 possesses the lower calorific value gas supplying tubing 53 that lower calorific value gas that direct reduction system iron equipment S is taken place acts as a fuel and offers boiler 52, on this lower calorific value gas supplying tubing 53, the dust collect plant 7 that lower calorific value gas that direct reduction system iron equipment S is sent here carries out dedusting is set, the buffer container 10 that temporary transient storage lower calorific value gas is used, the heating value detection device 8 that the heating value that detects lower calorific value gas in the upstream side and the downstream side of buffer container 10 is used, 9, and the flowmeter 54 of measuring the delivery volume of lower calorific value gas.To being marked with identical symbol and omitting its detailed description with the machine of lower calorific value gas feeding apparatus 1 shown in Figure 1, the parts that the pipe arrangement class is identical.

The buffer container that is provided with on the lower calorific value gas feeding apparatus 51 that this boiler is used is not limited to the container 10 of the solid shape of the constancy of volume shown in Figure 28, also can use

other containers

23,31,47 of having narrated.On this lower calorific value gas feeding apparatus 1, the diluent gas supply arrangement is not set.Though this is that the heating value of the height of the rising degree that the heating value change of above-mentioned lower calorific value gas causes not is the factor that produces big problem because it is desirable that boiler utilizes

buffer container

10,23,31,47 inhibition heating value changes itself to obtain stable output.

In Figure 28, supplying with object as the lower calorific value gas of lower calorific value gas feeding apparatus 51 is fuel-burning equipment, boiler 52 only is set, but is not limited to such structure.Also can gas turbine 2 (Fig. 1) be set, can also and establish other fuel-burning equipment with boiler 52.For example, under gas turbine shown in Figure 12 and boiler 52 and the situation of establishing, in the heating value meter 9 of the lower calorific value gas supplying tubing 3 of Fig. 1 and the part between the flowmeter 11, form the downstream side that makes the heating value meter 9 among Figure 28 and get final product to the connection of lower calorific value supply gas pipe arrangement 53 bifurcateds of boiler 52.

In the example of above explanation, illustration gas turbine and boiler example as fuel-burning equipment, but fuel-burning equipment of the present invention is not limited to gas turbine and boiler.Here Shuo Ming heat release in gas region variation suppressing and lower calorific value gas feeding apparatus also can be used in other fuel-burning equipment, for example oven, incinerator etc.

More than in Shuo Ming the example, as the lower calorific value gas illustration of using the bi-product gas of direct reduction system iron processes generation, but be not limited to this, lower calorific value gas comprises installation for blast furnace gas (BFG), coke oven gas (COG), converter gas (LDG), the coal seam gas that comprises in the coal seam (Coal mine gas is called for short CMG), the bi-product gas that melting and reducing system iron processes takes place, the tail gas that takes place in GTL (gas liquefaction) technology, the gas of from the technology of oil-sand refined oil, following the bi-product gas of generation to use the waste incineration of plasma to take place, the general waste that comprises living rubbish in fermentation with burying, the methane gas that takes place in the decomposition process (Landfill gas), and other similar raw material generation chemical reactions are followed the lower calorific value gases such as bi-product gas of generation etc.Certainly picture is as the mixed gas use of BFG and COG, and above-mentioned gas is use separately certainly, and two or more gas suitably mixes under the situation of use also can use the present invention.

Industrial applicability

If employing the present invention, will be as process byproducts gas caloric value can change lower calorific value gas Offer the combustion apparatus such as gas turbine and act as a fuel in the situation that gas uses, can suppress sending out of lower calorific value gas Therefore the heat change utilizes diluent gas to dilute effectively and easily and realizes. And sometimes do not need to utilize rare The outgas body dilutes. Can utilize again existing gas storage holder to construct the device that suppresses the heat release in gas region change.

Claims

1. a heat release in gas region variation suppressing is characterized in that possessing

Gas acted as a fuel to offer to be set on the fuel gas supply path that fuel-burning equipment uses, temporarily store fuel gas container,

Be formed on the container with being independent of described gas access, make fuel gas flow out to the gas outlet that the fuel gas supply path is used from container.

2. heat release in gas region variation suppressing according to claim 1 is characterized in that, described gas access be formed on from substantially horizontal upward or the direction that tilts of below make fuel gas flow into structure in the container.

3. heat release in gas region variation suppressing according to claim 2 is characterized in that,

Be included in the tipping tube member that forms continuously on the fuel gas supply path that is communicated with described gas access,

This tipping tube member form from substantially horizontal upward or the below tilt.

4. heat release in gas region variation suppressing according to claim 2 is characterized in that, be included in the fuel gas supply path nearby of described gas access and in the container both one of the abatvent plate that sets,

This abatvent plate is the fixing louver board of a slice at least in angle of inclination.

5. heat release in gas region variation suppressing according to claim 2 is characterized in that,

Be included in the gas inflow device that is provided with on the described gas access,

This gas inflow device forms and can change the structure that fuel gas flows into the inflow angle in the container.

6. heat release in gas region variation suppressing according to claim 5 is characterized in that,

This variable louver board is joltily to install, and can change the louver board of a slice at least at its angle of inclination from the outside.

7. heat release in gas region variation suppressing according to claim 1 and 2 is characterized in that described gas access forms a plurality of, and formation can select to switch the structure that makes fuel gas flow into the gas access in the container from described gas access.

8. heat release in gas region variation suppressing according to claim 7 is characterized in that,

Described gas outlet forms a plurality of, and formation can be synchronous with the switching of described gas access, select to switch the structure that makes the gas outlet that fuel gas flows out outside container.

9. according to claim 7 or 8 described heat release in gas region variation suppressings, it is characterized in that, form described a plurality of gas accesses, the mutually different structure of the inflow direction of the fuel gas that in container, flows into.

10. heat release in gas region variation suppressing according to claim 1 and 2 is characterized in that,

Described gas access forms a plurality of,

Comprise the flow adjuster that is provided with on the fuel gas supply path that is communicated with each gas access,

Formation can change the structure of the gas flow that flows through each fuel gas supply path.

11. each the described heat release in gas region variation suppressing according in the claim 1～10 is characterized in that, comprises to be connected with described container, makes inactive gas flow into the inactive gas supply passage of using in the container.

12. each the described heat release in gas region variation suppressing according in the claim 1～10 is characterized in that,

Comprise the inactive gas supply passage that internally is connected that inserts the fuel gas supply path that is communicated with described gas access,

The outlet end of this inactive gas supply passage is positioned at upstream, described gas access.

13., it is characterized in that described inactive gas is the product that the nitrogen of discarding of at least a factory discharge in recovery system oxygen factory and the system nitrogen factory obtains according to claim 11 or 12 described heat release in gas region variation suppressings.

14. each the described heat release in gas region variation suppressing according in the claim 2～13 is characterized in that,

Be included in a plurality of the 1st heat release in gas region measuring devices of keeping at a distance mutually on the described container and being provided with,

The structure that formation can utilize the heating value of the gas in the 1st heat release in gas region measuring device measuring vessel to distribute.

15. heat release in gas region variation suppressing according to claim 14, it is characterized in that, comprise measured value according to described the 1st heat release in gas region measuring device, detect the distribution of the heat release in gas region value in the container, according to the distribution of this heat release in gas region value, control makes gas flow into the control gear that the gas stream Inbound in the container changes.

16. each the described heat release in gas region variation suppressing according in the claim 2～15 is characterized in that, comprises

With fuel gas supply path that described gas access is communicated with on be provided with, measure inlet gas measurement of calorific value device that the heat release in gas region value of inlet side uses and

On the fuel gas supply path that is communicated with gas outlet, be provided with, measure the exit gas measurement of calorific value device that the heat release in gas region value of oral-lateral is used.

17. heat release in gas region variation suppressing according to claim 16, it is characterized in that, comprise measured value according to described inlet gas measurement of calorific value device and exit gas measurement of calorific value device, the heating value change of heating value change and the discharge gas that is discharged from the container that flows into the inflow gas of container is contrasted, according to this comparing result, control makes gas flow into the control gear that the gas stream Inbound in the container changes.

18. each the described heat release in gas region variation suppressing according in the claim 2～17 is characterized in that,

Form the structure that the ceiling of described container can move up and down,

Comprise direction that moves up and down and distance according to this ceiling, control makes gas flow into the control gear that the gas stream Inbound in the container changes.

19. heat release in gas region variation suppressing according to claim 1 and 2 is characterized in that, described gas outlet is formed on the position of elongation line of the central shaft that departs from the gas access.

20. each the described heat release in gas region variation suppressing according in the claim 1～19 is characterized in that, the stirring apparatus of blender gas body and function is set at described internal tank.

21. a fuel gas supply equipment is characterized in that,

This heat release in gas region restraining device is each the described heat release in gas region variation suppressing in the claim 1～20.

22. fuel gas supply equipment according to claim 21 is characterized in that, also comprises

In the described heat release in gas region restraining device

23. fuel gas supply equipment according to claim 21 is characterized in that, also comprises

In the described heat release in gas region restraining device

24. fuel gas supply equipment according to claim 21 is characterized in that, also comprises

In the described heat release in gas region restraining device

25. fuel gas supply equipment according to claim 21 is characterized in that, also comprises

In the described heat release in gas region restraining device,

26. fuel gas supply equipment according to claim 21 is characterized in that, also comprises

In the described heat release in gas region restraining device,

27. a gas-turbine plant is characterized in that,

Possess described fuel-burning equipment and fuel gas offered this fuel-burning equipment fuel gas supply equipment that gas uses that acts as a fuel,

Described fuel-burning equipment is a gas turbine,

Described fuel gas supply equipment is each the described fuel gas supply equipment in the claim 21～26.

28. a boiler equipment is characterized in that,

Described fuel gas supply equipment is exactly each the described fuel gas supply equipment in the claim 21～26.