CN108916857A - A kind of gas-steam combined cycle set flue gas treating process - Google Patents

A kind of gas-steam combined cycle set flue gas treating process Download PDF

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Publication number
CN108916857A
CN108916857A CN201810534138.8A CN201810534138A CN108916857A CN 108916857 A CN108916857 A CN 108916857A CN 201810534138 A CN201810534138 A CN 201810534138A CN 108916857 A CN108916857 A CN 108916857A
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CN
China
Prior art keywords
gas
heating
shell
bell
combined cycle
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CN201810534138.8A
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Chinese (zh)
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CN108916857B (en
Inventor
陈婧琪
林宏艺
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陈婧琪
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Publication of CN108916857A publication Critical patent/CN108916857A/en
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Publication of CN108916857B publication Critical patent/CN108916857B/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/16Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways
    • F22D1/18Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways and heated indirectly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/006Feed-water heaters, i.e. economisers or like preheaters with heating tubes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D5/00Controlling water feed or water level; Automatic water feeding or water-level regulators
    • F22D5/26Automatic feed-control systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L5/00Blast-producing apparatus before the fire
    • F23L5/04Blast-producing apparatus before the fire by induction of air for combustion, e.g. using steam jet
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00Preventing emissions
    • F23J2215/10Nitrogen; Compounds thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00Preventing emissions
    • F23J2215/20Sulfur; Compounds thereof

Abstract

The present invention relates to technical field of power generation,Specifically a kind of gas-steam combined cycle set flue gas treating process,The surface of the chimney for the combined cycle unit that the technique uses twist winds the second heating tube,Increase the contact area of the second heating tube and chimney,It is fast by thermal velocity,Homogeneous heating,It realizes and the internal water of water inlet pipe is heated,The inside of insulation barrel is installed by automatic draining mechanism,Kickboard is floated when the inside that the internal hot-water of the first hot-water line and the second hot-water line is put into insulation barrel reaches a certain amount of,Realize the inside that the internal hot-water of insulation barrel is put into boiler automatically automatically,The side wall of shell installs combustion-supporting mechanism,The top and bottom connection of the installs case is in the air draught shell of prismatic table shape,The inside of air draught shell is installed by filter plate,Avoid the inside that the dust in air enters gas turbine,Make the more abundant of fuel gas buring.

Description

A kind of gas-steam combined cycle set flue gas treating process

Technical field

The present invention relates to technical field of power generation, specifically a kind of gas-steam combined cycle set fume treatment work Skill.

Background technique

Vapour combined cycle (IGCC) is an important way of " clean combustion of coal " generation technology.Combustion gas in IGCC Turbine must reliably combustion gasification furnace generate in, low-heat value gas, the gas turbine product of standard has to pass through to burning The system reform can meet the requirement of IGCC.

However traditional gas-steam combined cycle set can only utilize the preheating of furnace body, pass through after fuel gas buring It crosses after chimney and causes the surface heat of chimney, existing gas-steam combined cycle set is not to the pre- heat utilization of chimney, waste Thermal energy cannot preheat the water for entering boiler, waste combustion gas, and the water heated is unable to automatic blanking, waste of manpower, mirror In this, the present invention provides a kind of gas-steam combined cycle set flue gas treating process, have the characteristics that:

(1) a kind of gas-steam combined cycle set flue gas treating process of the present invention, the surface of chimney is helically Shape winds the second heating tube, increases the contact area of the second heating tube and chimney, homogeneous heating fast by thermal velocity, after heating Water flow to the inside of insulation barrel, realize and the internal water of water inlet pipe heated.

(2) a kind of gas-steam combined cycle set flue gas treating process of the present invention, the inside installation of insulation barrel Automatic draining mechanism will be floated when the inside that the internal hot-water of the first hot-water line and the second hot-water line is put into insulation barrel reaches a certain amount of Plate floats, and realizes the inside that the internal hot-water of insulation barrel is put into boiler automatically automatically.

(3) the side wall installation of a kind of gas-steam combined cycle set flue gas treating process of the present invention, shell helps Combustion engine structure, the top and bottom connection of the installs case are in the air draught shell of prismatic table shape, and the inside of air draught shell is installed filter plate, avoided Dust in air enters the inside of gas turbine, increases the service life of machine, makes the more abundant of fuel gas buring.

Summary of the invention

For the problems of the prior art, the present invention provides a kind of gas-steam combined cycle set fume treatment works Skill, the surface of chimney twist wind the second heating tube, the contact area of the second heating tube and chimney are increased, by thermal velocity Fastly, homogeneous heating, the water after heating flow to the inside of insulation barrel, realize and heat to the internal water of water inlet pipe, insulation barrel Inside install automatic draining mechanism, when the inside that the internal hot-water of the first hot-water line and the second hot-water line is put into insulation barrel reaches It is a certain amount of to float kickboard, realize the inside that the internal hot-water of insulation barrel is put into boiler automatically automatically, the side wall peace of shell Combustion-supporting mechanism is filled, the top and bottom connection of the installs case is in the air draught shell of prismatic table shape, and the inside of air draught shell is installed filter plate, kept away Exempt from the inside that the dust in air enters gas turbine, to increase the service life of machine, has made more filling for fuel gas buring Point.

The technical solution adopted by the present invention to solve the technical problems is:A kind of gas-steam combined cycle set flue gas Treatment process, the technique include the following steps:

The flue gas that combined cycle unit generates is passed through in cleaner and is dusted by S1;

The S1 flue gas being discharged is passed through in suction device by S2, and suction device carries out desulphurization denitration to flue gas;

The equipment being discharged in S2 is passed through purifying column and purified by S3, and the flue gas of purification is directly discharged into atmosphere by purifying column In;

The combined cycle unit used in this technique includes water inlet pipe, bell, steam pipe, the first heating mechanism, Warming machine Structure, automatic draining mechanism, the second heating mechanism, shell, combustion chamber, boiler and combustion-supporting mechanism;In the institute of hollow health cube structure The one of side wall for stating shell is installed for making the more fully described combustion-supporting mechanism of fuel gas buring, another side wall of the shell Equipped with second heating mechanism for being vented and heating, the side wall positioned at the shell of the combustion-supporting mechanism side is equipped with For providing the water inlet pipe at water source, the inside installation of the shell is used for the combustion chamber of combustion gas, the burning One end of room and the combustion-supporting mechanism connection, the other end of the combustion chamber are connected to second heating mechanism, the shell Inside place the boiler of water supply heating, the water inlet pipe is connected to the boiler, and the top of the boiler engages The bell for sealing the boiler is connected, the top of the bell is set to the steam for conveying steam Pipe, the heat preservation mechanism of the top installation of the bell for heat preservation, the heat preservation mechanism and first heating mechanism connect Logical, the inside that first heating mechanism is embedded in the shell is connected to the water inlet pipe, and the water inlet pipe adds with described second Hot mechanism connection, the inside of the heat preservation mechanism is equipped with the automatic draining mechanism banished for controlling hot water, described automatic Water-drainage mechanism is connected to through the bell with the boiler.

Specifically, the combustion-supporting mechanism includes gas turbine, filter plate, air draught shell, installs case and fuel gas conduit, the shell One of side wall installs the gas turbine, and the side wall of the gas turbine installs two combustion gas for being used for delivery of fuel gas Pipe, the side wall of the gas turbine are fixedly connected with the installs case, and the top and bottom of the installs case is symmetrically installed hollow rib The filter plate of the dust in for filtering air is installed in the air draught shell of platform shape, the inside of the air draught shell.

Specifically, second heating mechanism includes the second heating tube, chimney and connecting box, the side wall of the shell is fixed It is connected with the connecting box with the combustion chamber, the top of the connecting box is connected to the cigarette of the hollow cylindrical Chimney, the surface of the chimney twist wind second heating tube, and second heating tube is connected to the water inlet pipe.

Specifically, the heat preservation mechanism includes escape pipe, venthole and insulation barrel, the top of the bell is installed for giving The insulation barrel of the ellipsoidal cross section of hot water thermal insulating, the top of the insulation barrel are connected to the escape pipe, the outlet The side wall of pipe opens up the venthole for exhaust, and the insulation barrel is connected to second hot-water line.

Specifically, the automatic draining mechanism includes gas leakage hole, guard column, kickboard, connecting rod, water inlet, sealing plate, discharges water Mouth, strainer and baffle, the guard column of the inside installation hollow cylindrical structure of the insulation barrel, the top surface of the guard column The gas leakage hole is opened up, it is in the horn-like water inlet that the side wall of the guard column, which opens up two sections, the guard column Bottom opens up the dewatering outlet in " eight " shape, and the guard column is connected to through the bell with the boiler, the protection The bottom that the internal slide of column connects the kickboard is vertically fixedly connected with the connecting rod, and the surface of the connecting rod, which is fixedly connected, to be used for The sealing plate for sealing the dewatering outlet, positioned at the bottom of the strainer the connecting rod and the fixed baffle in surface.

Specifically, the first heating mechanism muff and the first heating tube, the side wall connection of the insulation barrel described the One heating tube, first heating tube is connected to through the bell with the water inlet pipe, and first heating tube is " U "-shaped solid The fixed inside with the bell, the muff of the surface wrap of first heating tube for heat preservation.

Specifically, the angle being located between first heating tube and the bell at the top of the bell is less than 45 Degree, first heating tube are equidistantly connected to the insulation barrel.

Beneficial effects of the present invention:

(1) a kind of gas-steam combined cycle set flue gas treating process of the present invention, the surface of chimney is helically Shape winds the second heating tube, increases the contact area of the second heating tube and chimney, homogeneous heating fast by thermal velocity, after heating Water flow to the inside of insulation barrel, realize and the internal water of water inlet pipe heated.

(2) a kind of gas-steam combined cycle set flue gas treating process of the present invention, the inside installation of insulation barrel Automatic draining mechanism will be floated when the inside that the internal hot-water of the first hot-water line and the second hot-water line is put into insulation barrel reaches a certain amount of Plate floats, and realizes the inside that the internal hot-water of insulation barrel is put into boiler automatically automatically.

(3) the side wall installation of a kind of gas-steam combined cycle set flue gas treating process of the present invention, shell helps Combustion engine structure, the top and bottom connection of the installs case are in the air draught shell of prismatic table shape, and the inside of air draught shell is installed filter plate, avoided Dust in air enters the inside of gas turbine, increases the service life of machine, makes the more abundant of fuel gas buring.

Detailed description of the invention

Present invention will be further explained below with reference to the attached drawings and examples.

Fig. 1 is a kind of structural schematic diagram of preferred embodiment of gas-steam combined cycle set provided by the invention;

Fig. 2 is shell shown in FIG. 1, boiler, bell, combustion chamber connection schematic diagram;

Fig. 3 is the portion A shown in FIG. 1 structure enlargement diagram;

Fig. 4 is automatic draining structural scheme of mechanism shown in FIG. 1.

In figure:1, water inlet pipe, 2, bell, 3, steam pipe, the 4, first heating mechanism, 41, muff, the 42, first heating tube, 5, heat preservation mechanism, 51, escape pipe, 52, venthole, 53, insulation barrel, 6, automatic draining mechanism, 61, gas leakage hole, 62, guard column, 63, kickboard, 64, connecting rod, 65, water inlet, 66, sealing plate, 67, dewatering outlet, 68, strainer, 69, baffle, the 7, second heating mechanism, 71, the second heating tube, 72, chimney, 73, connecting box, 8, shell, 9, combustion chamber, 9a, boiler, 9b, combustion-supporting mechanism, 91b, combustion gas Turbine, 92b, filter plate, 93b, air draught shell, 94b, installs case, 95b, fuel gas conduit.

Specific embodiment

In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Specific embodiment is closed, the present invention is further explained.

As depicted in figs. 1 and 2, a kind of gas-steam combined cycle set flue gas treating process of the present invention, the work Skill includes the following steps:

The flue gas that combined cycle unit generates is passed through in cleaner and is dusted by S1;

The S1 flue gas being discharged is passed through in suction device by S2, and suction device carries out desulphurization denitration to flue gas;

The equipment being discharged in S2 is passed through purifying column and purified by S3, and the flue gas of purification is directly discharged into atmosphere by purifying column In;

The combined cycle unit used in this technique includes water inlet pipe 1, bell 2, steam pipe 3, the first heating mechanism 4, protects Warm mechanism 5, automatic draining mechanism 6, the second heating mechanism 7, shell 8, combustion chamber 9, boiler 9a and combustion-supporting mechanism 9b;In hollow health One of side wall of the shell 8 of cube structure is installed for making the more fully described combustion-supporting mechanism 9b of fuel gas buring, institute Another side wall of shell 8 is stated equipped with second heating mechanism 7 for being vented and heating, is located at the side combustion-supporting mechanism 9b The side wall of the shell 8 be equipped with for providing the water inlet pipe 1 at water source, the inside installation of the shell 8 is for combustion of burning The combustion chamber 9 of gas, one end of the combustion chamber 9 are connected to the combustion-supporting mechanism 9b, the other end of the combustion chamber 9 and institute State the connection of the second heating mechanism 7, the boiler 9a of water supply heating is placed in the inside of the shell 8, the water inlet pipe 1 with The boiler 9a is connected to, the bell 2 being connected together at the top of the boiler 9a for sealing the boiler 9a, described The top of bell 2 is set to the steam pipe 3 for conveying steam, the guarantor of the top installation of the bell 2 for heat preservation Warm mechanism 5, the heat preservation mechanism 5 are connected to first heating mechanism 4, and first heating mechanism 4 is embedded in the shell 8 Internal to be connected to the water inlet pipe 1, the water inlet pipe 1 is connected to second heating mechanism 7, the inside of the heat preservation mechanism 5 Equipped with the automatic draining mechanism 6 banished for controlling hot water, the automatic draining mechanism 6 through the bell 2 with it is described Boiler 9a connection.

Specifically, as shown in figures 1 and 3, a kind of gas-steam combined cycle set fume treatment work of the present invention Skill, the combustion-supporting mechanism 9b include gas turbine 91b, filter plate 92b, air draught shell 93b, installs case 94b and fuel gas conduit 95b, described One of side wall of shell 8 installs the gas turbine 91b, and the side wall of the gas turbine 91a installs two for conveying The fuel gas conduit 95b of combustion gas, the side wall of the gas turbine 91b are fixedly connected with the installs case 94b, the installs case 94b Top and bottom be symmetrically installed the air draught shell 93b of hollow prismatic table shape, the inside of the air draught shell 93b is installed for filtering The filter plate 92b of dust in air.

Specifically, as depicted in figs. 1 and 2, a kind of gas-steam combined cycle set fume treatment work of the present invention Skill, second heating mechanism 7 include the second heating tube 71, chimney 72 and connecting box 73, and the side wall of the shell 8 is fixedly connected There is the connecting box 73 being connected to the combustion chamber 9, the top of the connecting box 73 is connected to the described of the hollow cylindrical Chimney 72, the surface of the chimney 72 twist wind second heating tube 71, second heating tube 71 with it is described into Water pipe 1 is connected to.

Specifically, as shown in Figure 1, a kind of gas-steam combined cycle set flue gas treating process of the present invention, institute Stating heat preservation mechanism 5 includes escape pipe 51, venthole 52 and insulation barrel 53, and the top of the bell 2 is installed for hot water thermal insulating Ellipsoidal cross section the insulation barrel 53, the top of the insulation barrel 53 is connected to the escape pipe 51, the escape pipe 51 side wall opens up the venthole 52 for exhaust, and the insulation barrel 53 is connected to second hot-water line 71.

Specifically, as shown in Figure 1 and Figure 4, a kind of gas-steam combined cycle set fume treatment work of the present invention Skill, the automatic draining mechanism 6 include gas leakage hole 61, guard column 62, kickboard 63, connecting rod 64, water inlet 65, sealing plate 66, put The mouth of a river 67, strainer 68 and baffle 69, the guard column 62 of the inside installation hollow cylindrical structure of the insulation barrel 53 are described The top surface of guard column 62 opens up the gas leakage hole 61, the side wall of the guard column 62 open up two sections in it is horn-like it is described into The mouth of a river 65, the bottom of the guard column 62 open up the dewatering outlet 67 in " eight " shape, and the guard column 62 runs through the furnace Lid 2 is connected to the boiler 9a, and the bottom that the internal slide of the guard column 62 connects the kickboard 63 is vertically fixedly connected with institute Connecting rod 64 is stated, the surface of the connecting rod 66 is fixedly connected with the sealing plate 66 for sealing the dewatering outlet 67, is located at described The connecting rod 64 of the bottom of strainer 68 and the fixed baffle 69 in surface.

Specifically, as shown in Figure 1, a kind of gas-steam combined cycle set flue gas treating process of the present invention, institute 4 muff 41 of the first heating mechanism and the first heating tube 42 are stated, the side wall of the insulation barrel 53 is connected to first heating tube 42, First heating tube 42 is connected to through the bell 2 with the water inlet pipe 1, and the " U "-shaped fixation of first heating tube 42 With the inside of the bell 2, the muff 41 of the surface wrap of first heating tube 42 for heat preservation.

Specifically, as shown in Figure 1, a kind of gas-steam combined cycle set flue gas treating process of the present invention, position Angle between first heating tube 42 and the bell 2 at the top of the bell 2 is less than 45 degree, first heating Pipe 42 is equidistantly connected to the insulation barrel 53.

Combustion-supporting mechanism 9b is installed in one of side wall of shell 8 first, make combustion gas combustion chamber 9 it is internally fired more Add sufficiently, combustion chamber 9 is connect with connecting box 73, realizes combustion gas in the exhaust gas inside of chimney 72, in the top card of boiler 9a Bell 2 is closed, the insulation barrel 53 is installed at the top of bell 2, is realized the hot water thermal insulating of heating, in the inside of insulation barrel 53 Automatic draining mechanism 6 is installed, realizes automatic draining;Specifically have:

(1) in order to increase the combustion efficiency of combustion gas, one of side wall of shell 8 is installed into gas turbine 91b, combustion gas wheel The side wall of machine 91a installs two fuel gas conduit 95b for being used for delivery of fuel gas, and the side wall of gas turbine 91b is fixedly connected with installs case 94b, the top and bottom of installs case 94b are symmetrically installed the air draught shell 93b of hollow prismatic table shape, and the inside of air draught shell 93b, which is installed, to be used In the filter plate 92b for the dust crossed in air filtering, the combustion efficiency of combustion gas is increased.

(2) inside of plume to chimney 72 that the combustion gas after burning generates, which realizes, adds the water of the second hot-water line 71 Heat, the water of heating flow to the inside of insulation barrel 53, the guard column 62 of the inside installation hollow cylindrical structure of insulation barrel 53, protection The top surface of column 62 opens up gas leakage hole 61, and the side wall of guard column 62 opens up two sections in horn-like water inlet 65, guard column 62 Bottom open up in the dewatering outlet 67 of " eight " shape is fallen, guard column 62 is connected to through bell 2 with boiler 9a, the inside cunning of guard column 62 The bottom of dynamic connection kickboard 63 is vertically fixedly connected with connecting rod 64, and the surface of connecting rod 66 is fixedly connected for sealing the close of dewatering outlet 67 Sealing plate 66, positioned at the bottom of strainer 68 connecting rod 64 and surface fixed baffle 69, realize when the inside of insulation barrel 53 reaches Kickboard 63 is floated automatically after a certain amount of, water flows to being internally heated for boiler 9a from guard column 62, reduce gas consumption, Steam is sprayed from steam pipe 3, is reduced manpower, is improved pre- heat utilization efficiency.

(3) it is connected to the first heating tube 42 in the side wall of insulation barrel 53, the first heating tube 42 connects through bell 2 and water inlet pipe 1 It is logical, and the inside of the first heating tube 42 " U "-shaped fixation and bell 2, guarantor of the surface wrap of the first heating tube 42 for heat preservation Temperature set 41, increases contact area, and the water of the first heating tube 42 heating flows to insulation barrel 53 and flows to pot by automatic draining mechanism The inside of furnace 9a.

The surface of chimney of the present invention twist winds the second heating tube 71, increases the second heating tube 71 and chimney 72 Contact area, homogeneous heating fast by thermal velocity, the water after heating flow to the inside of insulation barrel 53, realize in water inlet pipe 1 Portion's water is heated, and automatic draining mechanism 6 is installed in the inside of insulation barrel 53, when in the first hot-water line 42 and the second hot-water line 71 The inside that portion's hot water is put into insulation barrel 53 reaches a certain amount of and floats kickboard 63, realizes the internal hot-water of insulation barrel 53 automatically Automatically it is put into the inside of boiler 9a, the side wall of shell 8 installs combustion-supporting mechanism 9b, and the top and bottom connection of the installs case is in rib Filter plate is installed in the inside of the air draught shell of platform shape, air draught shell, avoids the inside that the dust in air enters gas turbine 91b, The service life for increasing machine makes the more abundant of fuel gas buring.

The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the present invention is not limited to the above embodiments, and the description in above embodiment and specification only illustrates the present invention Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and Improvement is both fallen in the scope of protection of present invention.The claimed scope of the invention is by appended claims and its equivalent Object defines.

Claims (7)

1. a kind of gas-steam combined cycle set flue gas treating process, which is characterized in that the technique includes the following steps:
The flue gas that combined cycle unit generates is passed through in cleaner and is dusted by S1;
The S1 flue gas being discharged is passed through in suction device by S2, and suction device carries out desulphurization denitration to flue gas;
The equipment being discharged in S2 is passed through purifying column and purified by S3, and the flue gas of purification is directly discharged into atmosphere by purifying column;
The combined cycle unit used in this technique includes water inlet pipe (1), bell (2), steam pipe (3), the first heating mechanism (4), heat preservation mechanism (5), automatic draining mechanism (6), the second heating mechanism (7), shell (8), combustion chamber (9), boiler (9a) and Combustion-supporting mechanism (9b);It installs in one of side wall of the shell (8) of hollow health cube structure for making fuel gas buring more The sufficient combustion-supporting mechanism (9b), another side wall of the shell (8) are equipped with second heating for being vented and heating Mechanism (7), the side wall for being located at the shell (8) of combustion-supporting mechanism (9b) side are equipped with for providing the water inlet at water source Manage (1), the shell (8) inside installation be used for combustion gas the combustion chamber (9), one end of the combustion chamber (9) with Combustion-supporting mechanism (9b) connection, the other end of the combustion chamber (9) are connected to second heating mechanism (7), the shell (8) boiler (9a) of water supply heating is placed in inside, and the water inlet pipe (1) is connected to the boiler (9a), described The bell (2) being connected together at the top of boiler (9a) for sealing the boiler (9a), the top of the bell (2) Set on the steam pipe (3) for conveying steam, the heat preservation mechanism of the top installation of the bell (2) for heat preservation (5), the heat preservation mechanism (5) is connected to first heating mechanism (4), and first heating mechanism (4) is embedded in the shell (8) inside is connected to the water inlet pipe (1), and the water inlet pipe (1) is connected to second heating mechanism (7), the heat preservation The inside of mechanism (5) is equipped with the automatic draining mechanism (6) banished for controlling hot water, and the automatic draining mechanism (6) is passed through The bell (2) is worn to be connected to the boiler (9a).
2. a kind of gas-steam combined cycle set flue gas treating process according to claim 1, it is characterised in that:Institute Stating combustion-supporting mechanism (9b) includes gas turbine (91b), filter plate (92b), air draught shell (93b), installs case (94b) and fuel gas conduit One of side wall of (95b), the shell (8) install the gas turbine (91b), the side wall of the gas turbine (91a) Installation two are used for the fuel gas conduit (95b) of delivery of fuel gas, and the side wall of the gas turbine (91b) is fixedly connected with the installation Case (94b), the top and bottom of the installs case (94b) are symmetrically installed the air draught shell (93b) of hollow prismatic table shape, the suction The filter plate (92b) of dust in the inside installation for filtering air of the crust of weathering (93b).
3. a kind of gas-steam combined cycle set flue gas treating process according to claim 1, it is characterised in that:Institute Stating the second heating mechanism (7) includes the second heating tube (71), chimney (72) and connecting box (73), and the side wall of the shell (8) is solid Surely it is connected with the connecting box (73) being connected to the combustion chamber (9), the top connection of the connecting box (73) is described hollow The cylindrical chimney (72), the surface of the chimney (72) twist wind second heating tube (71), and described the Two heating tubes (71) are connected to the water inlet pipe (1).
4. a kind of gas-steam combined cycle set flue gas treating process according to claim 3, it is characterised in that:Institute Stating heat preservation mechanism (5) includes escape pipe (51), venthole (52) and insulation barrel (53), and the top installation of the bell (2) is used for To the insulation barrel (53) of the ellipsoidal cross section of hot water thermal insulating, the top and the escape pipe (51) of the insulation barrel (53) Connection, the side wall of the escape pipe (51) open up the venthole (52) for exhaust, the insulation barrel (53) and described the Two hot-water lines (71) connection.
5. a kind of gas-steam combined cycle set flue gas treating process according to claim 3, it is characterised in that:Institute Stating automatic draining mechanism (6) includes gas leakage hole (61), guard column (62), kickboard (63), connecting rod (64), water inlet (65), sealing Plate (66), dewatering outlet (67), strainer (68) and baffle (69), the inside installation hollow cylindrical structure of the insulation barrel (53) The guard column (62), the top surface of the guard column (62) open up the gas leakage hole (61), and the side wall of the guard column (62) is opened If two sections are in the horn-like water inlet (65), the bottom of the guard column (62) is opened up puts in the described of " eight " shape The mouth of a river (67), the guard column (62) are connected to through the bell (2) with the boiler (9a), the inside of the guard column (62) The bottom of the kickboard that is slidably connected (63) is vertically fixedly connected the connecting rod (64), and the surface of the connecting rod (66) is fixedly connected For sealing the sealing plate (66) of the dewatering outlet (67), be located at the connecting rod (64) of the bottom of the strainer (68) with The fixed baffle (69) in surface.
6. a kind of gas-steam combined cycle set flue gas treating process according to claim 4, it is characterised in that:Institute State the first heating mechanism (4) muff (41) and the first heating tube (42), the side wall connection described first of the insulation barrel (23) Heating tube (42), first heating tube (42) are connected to through the bell (2) with the water inlet pipe (1), and described first adds The inside of heat pipe (42) " U "-shaped fixation and the bell (2), the surface wrap of first heating tube (42) is for heat preservation The muff (41).
7. a kind of gas-steam combined cycle set flue gas treating process according to claim 6, it is characterised in that:Position Angle between first heating tube (42) and the bell (2) at the top of the bell (2) is less than 45 degree, and described One heating tube (42) is equidistantly connected to the insulation barrel (23).
CN201810534138.8A 2018-05-29 2018-05-29 Flue gas treatment process of gas-steam combined cycle unit CN108916857B (en)

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CN202973192U (en) * 2012-11-11 2013-06-05 湖南宏大锅炉设备有限公司 Flue gas waste heat utilization device for stove chimney
CN203531951U (en) * 2013-07-19 2014-04-09 河南理工大学 Large-discharge-capacity slagging and water draining device based on electromagnet control
CN105674568A (en) * 2016-04-07 2016-06-15 山东科技大学 Boiler chimney waste heat recovery, dust-removal and cooling device and use method thereof

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Publication number Priority date Publication date Assignee Title
CN1097842A (en) * 1993-01-25 1995-01-25 西屋电气公司 Combined combustion and steam turbine power plant
CN202973192U (en) * 2012-11-11 2013-06-05 湖南宏大锅炉设备有限公司 Flue gas waste heat utilization device for stove chimney
CN203531951U (en) * 2013-07-19 2014-04-09 河南理工大学 Large-discharge-capacity slagging and water draining device based on electromagnet control
CN105674568A (en) * 2016-04-07 2016-06-15 山东科技大学 Boiler chimney waste heat recovery, dust-removal and cooling device and use method thereof

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